• Characteristics
• Choice of modification
• Specification and equipment
• Technical documentation
• public guarantee
• Acceptance, delivery, commissioning

Benefits and Brief Description

Wide universal milling machine SF676 is a universal machine, with broad scope applications.

According to statistical data, the main consumers of the machine are enterprises of the domestic military-industrial complex, which use the machine both in mass production of parts and in instrumental, experimental, auxiliary, repair units; as well as enterprises of the processing industry, mainly for repair and maintenance purposes.

The SF676 machine allows you to perform various operations: milling flat and shaped planes, drilling, threading, centering, countersinking, boring, slotting, marking and other types of work. The machine can process parts of the most complex configurations from various materials and with high accuracy. On the machine it is possible to use a huge variety of tools and fixtures.

By using the CF676 machine, you minimize non-productive time as much as possible, process parts economically and efficiently.

Advantages of the SF676 machine

• The machine uses an original VFG design solution, based on the “DOUBLE CYLINDER” principle, which can be rotated at an angle of ±90 degrees. The "DOUBLE CYLINDER" design ensures the stability of processing and the safety of the body from destruction, and allows for power milling.
• The machine uses industrial LED lighting, it is possible to install additional, more powerful, sealed lighting.
• The machine is equipped with DRO units manufactured by SKB IS and manufactured by GIVI-Electronics. The DRO block is equipped with a direct reference system that displays the actual position or movement of the work unit in space, and not the rotation of the axle drive screw.
• The consumer has the right to choose the type of linear displacement transducers, based on their own operating conditions.
• Cast massive cast iron bed absorbs vibrations and allows you to maintain the quality of parts machined on the machine. The guide beds are protected by a special corrugated casing that protects the bed from premature destruction.
• Milling of both small details, and details up to 800 mm long, 300 mm wide and more is possible.
• Implemented the ability to perform slotting operations (PHOTO or drawing of a slotting head)
• Convenient (intuitive), classical control machine tool
• The small dimensions of the machine allow you to place it in almost any room.
• A wide range of rotation of the horizontal and vertical spindles allows you to choose the most suitable cutting conditions. The supply of coolant to the cutting zone is carried out through a modular-hinged tube.
• The presence of two spindles, horizontal and rotary vertical, as well as a large number accessories to the machine, makes it widely versatile and convenient for work in the tool shops of machine-building plants in the manufacture of fixtures, tools, embossed stamps and other products.
• A wide range of spindle speeds and feeds, the presence of mechanical feeds and fast movements provide economical processing of various parts in optimal modes.

Sketches of working surfaces and serial spindles

The location of the controls for the console-milling machine SF676

1. Electric pump switch
2. Network switch
3. Stops for shutting off the mechanical vertical feed
4. Flywheel for manual movement of the table in the vertical direction
5. Handwheel for manual movement of the table in horizontal direction
6. Quick travel handle for caliper and headstock
7. The handle of inclusion of horizontal and vertical mechanical giving of a table
8. Speed ​​dial
9. Vertical spindle manual feed handle
10. Clamping screws of the headstock trunk and vertical spindle trunk
11. Tool holder square in horizontal spindle
12. Coolant tube clamp handle
13. Light switch
14. Mechanical cross feed cut-off stops
15. Spindle handwheel
16. Control buttons "start" and "stop"
17. Handles of inclusion of speeds
18. The handle of inclusion of giving
19. Feed set disc
20. Engine reversal
21. Mechanical longitudinal feed deflection stops
22. Table clamp handle in horizontal direction
23. Clamping handle for vertical spindle sleeve
24. Vertical caliper clamp handle
25. Handwheel manual feed headstock
26. Headstock Clamp Handle
27. Setting the vertical head to zero position
28. The handle for turning on the mechanical feed of the headstock
29. Vertical spindle displacement stop
30. Tool taper clamping square in vertical spindle

Characteristics

Brief characteristics

FULL SPECIFICATIONS

Technological and operational

electrical equipment

Permissible parameters of geometric accuracy (basic of 28 controlled parameters)

Choice of modification

Symbol

SF676-A-B-C-D-E

SF676 - designation of a conditional base model. Milling machine 676 (wide-purpose milling machine SF676). Invariably when ordering.

To determine the required modification, it is necessary to sequentially determine the value of the variables. A, B, C, D, E - variable designations when ordering.

A - Dimensions and number of grooves of the angular horizontal table (hereinafter referred to as the notice of the UGS).

250/4 - serial normal UGS size 250x800mm, 4 T-slot according to GOST 1574-91. 2 middle grooves 14H8, the rest 14H12.

300/5 - serial enlarged UGS with a size of 300x800mm, 5 T-slots according to GOST 1574-91. The middle groove is 14H8, the rest are 14H12.

250/3 - serial normal UGS with a size of 250x800mm, 3 T-slots according to GOST 1574-91. The middle groove is 14H8, the rest are 14H12.

C - out of series. UGS manufactures according to the requirements of the Customer.

B - Applicable tapers of the horizontal and vertical spindles.

40AT5 - Serial. Taper of vertical and horizontal spindles 7:24-40 according to GOST15945-82.

KM4 - Serial. Cones of vertical and horizontal spindles MORSE CONE 4 according to GOST 25557-2006.

C - Out of series. Machine tools with cones of vertical and horizontal spindles are manufactured according to the requirements of the Customer.

C - The principle of the measuring system for digital indication devices (hereinafter referred to as DRO notices).

M - Serial. Magnetic principle of the measuring system. Accessories GIVI-ELECTRONICS (ITALY).

Oh - in series. Optical principle measuring system. Components JSC "SKB IS" ST. PETERSBURG, RF.

D - the number of displayed coordinates on the DRO block

0 - Serial. DRO is not installed.

F2 - Serial. Displaying the coordinates of the X,Y, axes.

F3 - Serial. Displaying the coordinates of the X,Y,Z axes.

FS - Out of series. The type and number of displayed coordinates according to the requirements of the Customer.

E - thread profile for the drive screws of the X, Y, Z axes

TR - Serial. Trapezoidal gears (dimensions, profile, tolerances in accordance with GOST 24737-81, 24738-81, 9484-81, 9562-81).

Ball screw - Serial. Ball screw gears rolling (dimensions, profile, tolerances according to GOST25329-82, OST 2 RZ1-5-89, OST 2 RZ1-4-88)

Symbol examples

• SF676-300/5-KM4-M-F3-ShVP universal milling machine SF676. Enlarged UGS size 300x800mm, 5 grooves according to GOST1574-91, Morse spindle tapers 4 according to GOST25557-2006, magnetic measuring system, 3 coordinates are displayed, ball screws are installed.
• Milling machine model SF 676 TU 3816-001-67559892-2016. Modification according to AI No. 2 dated 07/01/2017. - SF676-250/4-40AT5-0-0-TR universal milling machine SF676. UGS size 250x800mm, 4 grooves according to GOST1574-91, spindle tapers 7:24-40 according to GOST 15945-82, DRO is not installed, trapezoidal gears are installed.

Specification and equipment

The specification of the wide-universal milling machine SF676 is a list of its main elements, as well as a list of tools, accessories and equipment, including additional ones.

Main specification of SF676 universal milling machine

• Gear box - 751001
• Feed box - 752001
• Caliper - 763001
• Headstock - 766K001
• Bed - 767001
• Electrical equipment - 67690000
• Tool kit and accessories - 7680000
• Vertical head according to the "DOUBLE CYLINDER" principle (removable unit) - 764К001.01-ДЦ
• Horizontal corner table (removable unit) - 7681К001.01 (250/4)
• Protecting the Z-axis guides;
• Oil station type Y-6(8) with a manifold for 8 dispensers.
• Lighting LED 24V – 3 LEDs CL.
• DRO with linear converters of OAO SKB IS or GIVI-Electronics (for models with index F2, F3).
• SPPU components JSC "SKB IS"
• CNC at the customer's choice

Equipment set

SF 676.00.000.

Spare parts

Tool

Accessories

Technical documentation

Technical documentation:

• Certificate SF676
• Transport and unpacking of the machine
• Foundation. Machine installation.
• Specifications

Acceptance, delivery, commissioning

The policy of the Vyatka Machine Tool Plant approved the following works included in the cost of equipment:

1. Preliminary acceptance of the SF676 machine at the location of LLC "VSZ". On the this stage The buyer takes part in the procedure for the final control of the equipment for all parameters assigned to the control. By agreement it is possible to carry out preliminary acceptance by means of data transmission.
2. Transportation of equipment to the Buyer at the approved rates (see below). Transportation is carried out by transport company or through dedicated rolling stock.
3. Equipment insurance for the full cost, but not more than 1,800,000.00 rubles per piece, including VAT-20%. insurance company LLC "VSZ" chooses independently. Cargo insurance protects the Buyer from the risk of loss and / or damage to equipment in transit.
4. Start-up and adjustment works (CW) at the equipment installation site. Commissioning works are carried out in accordance with the document SF676.00.00.000AP dated 01.10.2017. Document SF676.00.00.000AP regulates the process of commissioning and acceptance and transfer of a wide-purpose milling machine model SF676 in all modifications.

The process of commissioning and acceptance and transfer from the supplier to the consumer is carried out strictly according to the methodology.

The process is divided into 3 components:

1. General equipment checks;
2. Checking the geometric accuracy of the machine;
3. Checking the machine in operation.

The act is filled in by the representatives of the manufacturer at the place of operation of the machine based on the results of measurements in the presence of representatives of the consumer. Filling out the act is carried out by a person who has a certificate of a service engineer of Vyatka Machine Tool Plant LLC, or another person who has a corresponding certificate issued by Vyatka Machine Tool Plant LLC.

Successful performance of work and inspections under this act means that the supplier has fulfilled its obligations for commissioning and acceptance and transfer to the extent stipulated by the manufacturer's regulations, as well as to the extent necessary to obtain warranty obligations, according to the "public guarantee" coupon. Other checks during commissioning and transfer of the machine from the supplier to the consumer are not provided by the documentation of Vyatka Machine Tool Plant LLC. By agreement with the consumer, partial (not complete) of the following checks is allowed.

At the request of the consumer and for a fee, Vyatka Machine Tool Plant LLC issues a duplicate certificate of construction of the machine.

Information about scammers, fakes and other "manufacturers"

Offers of low-quality (restored and repair) machines SF-676 are possible. Presumably, such machines can be offered by enterprises of the Kirov region and the Russian Federation that do not have the resources to build equipment.

Be careful!

More detailed information about organizations can be provided upon request.

We invite all potential consumers to Kirov to get acquainted with the production process of SF676 machines.

DEAR POTENTIAL CUSTOMERS!
In order to avoid buying fakes of SF676 machines, restored SF676 machines, Chinese machines under SF676, in all procedures, please indicate the following name and product quality requirement, namely:

"MILLING MACHINE
MODELS SF676 TU-3816-001-67559892-2012"

THE REGULATION TU-3816-001-67559892-2012 ESTABLISHES THE REQUIREMENTS THAT HAVE ONLY THE STRUCTURES OF MACHINES SF676 PRODUCED BY VSZ LLC.

ALSO YOU CAN ALWAYS ORDER A NON-STANDARD INCREASED HORIZONTAL TABLE 7681К001-02(300/5) WITH A SIZE OF 300X800MM, WHICH WILL IMMEDIATELY REMOVE UNFAIR MANUFACTURERS, SINCE ONLY VZZ LLC HAS ITS OWN CASTING BASE.

Special machines and further development of the project

For organizers of trade procedures

This section is intended to help legal entities who decided to purchase equipment manufactured by the Vyatka Machine Tool Plant according to the SF676 nomenclature in any chosen modification.

The information provided is for reference only and describes a potential item. trading procedure selected modification of the SF676 machine as standard with .

If it is necessary to supply the machine with additional equipment and / or additional work (for example: power supply, special guarantee, additional construction works when installing equipment, etc.) additional sections are being developed terms of reference, examples of which are given below.

Option 1

"Procurement Regulations" - allowed

Option 2

At the customer/buyer internal document – "Regulations on the purchase" - NOT allowed refer to documents that standardize finished products.

Attention! In connection with the increasing cases of fraud in the supply of machine tools, we ask you to work together between the customer's purchasing department and the production and commercial department of VZZ LLC in preparing trade procedures.

The 676th series of milling machines, extremely in demand during the Soviet era, has not lost its popularity today. In operation, both equipment manufactured in the 70-80s and modern modifications of these models are widespread.

In this article, we will consider the universal milling machine SF-676, study its layout and principle of operation, and also pay attention to the analogue of this model - the milling cutter 676P, and find out how they differ from each other.

1 Purpose and scope of use of SF-676

The wide-purpose milling cutter SF-676 can be equipped with two types of spindles - rotary-vertical, for working with face, key cutters, and horizontal, when using which cutters of shaped, disk and cylindrical types can be installed on the machine.

It is the presence of a second spindle head, adjustable in perpendicular planes, that distinguishes universal milling cutters from conventional machines. SF-676 can operate using two spindles at the same time, while the unit, in addition to milling, performs such operations as drilling, countersinking and boring.

IN industrial practice SF-676 is widely used for the following operations:

• processing of external, internal surfaces and bodies of revolution by turning;
• cutting grooves and ledges;
• turning splines on shafts;
• formation of gears.

Units of the 676th series belong to the class of high-precision milling machines (H). The highest processing accuracy is achieved in the absence of sources of vibration near the equipment, at a temperature environment 20 degrees and humidity around 65%.

SF-676 and 676P are in demand both in single and small-scale production, most often they can be found in the workshops of machine-building enterprises and tool factories. The popularity of these machines is due to the fact that they have the following operational benefits:

1. The machine bed is made of cast iron, its large weight does not allow vibrations during processing, which makes it possible to maintain a high milling point in any conditions.
2. Milling cutters of the 676 series are universal, they can process both small-sized parts and workpieces up to 80 cm long and 25 cm wide.
3. The equipment can be equipped with a slotting head, which will allow it to perform the appropriate operations.
4. The machines are relatively small among the equipment of their class, if necessary, they can even be placed in a garage.

Also among the advantages, we note a wide range of rotation of the spindle heads, which allows you to select the optimal mode for processing metals of any hardness.

1.1 Milling cutter SF-676 in operation (video)

1.2 Equipment specifications

Consider specifications machine SF-676:

• desktop dimensions: horizontal - 250*800, vertical - 250*630 mm;
• workpiece weight - up to 100 kg;
• distance along the spindle-table axis - from 80 to 450 mm;
• spindle overhang - from 125 to 375 mm;
• maximum stroke of the spindle head: along the X axis - 300 mm, along the Y axis - 380 mm;
• the highest spindle speed: horizontal - 1630, vertical - 2040 rpm;
• number of rotation speeds - 16;
• cone standard - 40AT5;
• feed speed of the headstock — 13-395 m/mm;
• number of innings - 16.

SF-676 is equipped with an electric drive with a power of 3 kW, there is also an auxiliary motor for the coolant supply system, from which an electric pump with a capacity of 23 l / min operates. Machine dimensions are 120*124*105 cm, weight is 1 ton. The cost of this model in the modern version varies within 700 thousand rubles.

Model 676P, similar in terms of layout and functionality, differs from SF-676 in the following parameters:

• 10 mm shorter distance along the spindle-table axis;
• vertical spindle headstock travel 250 mm;
• power of the main electric drive 2.2 kW;
• weight 910 kg, dimensions - 126*121*178 cm.

The wide-purpose milling machine 676P day has been completely replaced by an analogue of the SF-676, to date, new batches of equipment are not being produced. It is powerful to find equipment on the secondary market at a price of 250-300 thousand rubles.

2 Schemes and constructive device

The frame of the universal milling cutter SF-676 is made of cast iron, it acts as a supporting base on which the main structural components of the machine are fixed. A feed box and a speed block are mounted on the left side of the bed. A headstock moves along its upper part, on which a horizontal spindle is installed. On the same headstock, as necessary, you can mount a vertical spindle (to the front end).

The support of the milling cutter is mounted on vertical guides, the table - on horizontal ones. SF-676 is equipped with two working tables, the main of which is horizontal; workpieces up to 80 cm in length and 25 cm in width are mounted on it.

The electric drive of the machine is located at the bottom of the bed, on the base plate, inside of which there is a reservoir for the coolant. All electrical equipment of the unit is located under the top cover of the frame, which provides free access to the equipment as needed.

The main functional elements of the design of the milling cutter SF-676 are the caliper and the headstock:

• the caliper holds and moves the work table of the machine in the longitudinal-transverse plane, it is driven by a running shaft, which transmits the torque coming from the engine to the feed box;
• the headstock is connected to the feed box by means of a drum gear, the spindle itself is mounted on ball and radial bearings, the ability to accurately move the spindle is provided by an indicator holder.

5 built-in LED-light-emitting diodes are responsible for illumination of a workplace. Also, SF-676 in its modern version has a digital display unit, which displays the parameters of the current mode of operation of the machine.

The wide-purpose machine SF-676 is a reliable and durable equipment capable of working in difficult operating conditions, subject to maintenance standards. Maintenance must be carried out regularly, in a strictly specified time interval:

• every 10 hours of operation, guide and lead screws are lubricated with liquid machine oil;
• every 40 hours, linear bearings are covered with machine lubrication, Litol and its analogues are suitable;
• every 400 hours, the belts in the feed box are inspected and adjusted; if wear or damage is found, the belts must be replaced;
• every 400 hours, the screw assemblies are inspected and tightened.

Also, all moving parts of the router should be regularly inspected. Before putting the machine into operation for the first time after maintenance, the following points must be carried out:

1. Check the presence and reliability of fastening of protective covers and covers.
2. Remove repair tools from the working area, clean the table from lubricants and liquids.
3. Start the machine and make sure it is working at idle.

The performance check begins with the machine running at the minimum spindle speed, after which the speed increases up to the maximum. In the main operating speed mode, the unit must operate for 2 hours, after which the spindle supports must not heat up to a temperature of more than 50 degrees.

After the idle run, the machine is checked under load. The unit must operate at maximum cutting force and in 25% overload mode (short-term). SF-767, which is in good technical condition, even when overloaded within the specified limits, it does not produce vibrations that affect the accuracy of milling. Checking the machine should be carried out at an ambient temperature of +20 degrees, the recommended air humidity is 65%.

For the first time, the SF-676 milling machine was released in the 70s, after which it began to be used large enterprises operating in various industries. Universal equipment allows you to perform high-precision work, both in open areas and in closed industrial premises. The main condition for the operation of the equipment is a humidity not higher than 70% and a temperature ranging from +18 to +20 degrees.

SF-676 is used to perform the following operations:

• creation of gears;
• turning splines on shafts;
• formation of holes, processing of their outer boundaries of the workpiece;
• cutting ledges and grooves.

The milling cutter belongs to the class of high precision machines. To achieve the best results in work, the machine should be installed in places where there are no sources of vibration.

Technical features

Today, the equipment is considered to be in demand, both in single and small-scale production. Let us consider in more detail the structure of SF-676:

1. The milling mechanism is equipped with a sufficiently powerful electric drive of 3 kW. Auxiliary drives are also integrated into the design for supplying cutting fluid to various units.
2. The jet-mounted cast-iron bed is the bearing base on which the basic mechanisms and units are mounted. Only the gearbox and speed block are located on the left side of the machine.
3. A distinctive feature of the SF-676 is the presence of two desktops, the main of which is a horizontal table. This part allows you to process parts up to 80 cm long.
4. It is worth paying attention to the fact that literally all the electrical wiring is located under the frame, due to which the operator is provided with free access at any time.
5. This model is equipped with an additional spindle head, which is located on a retractable trunk, which has the ability to rotate at an angle of 90 degrees in both directions in two mutually perpendicular planes.
6. The base-mounted electric pump is also a coolant reservoir.
7. Vertical guides are built into the SF-676 support, and the desktop is installed on horizontal ones.
8. The machine has a simple structure and is quite easy to operate.

Advantages

SF-676 compares favorably with its small overall dimensions, due to which the equipment can be installed literally in any industrial premises or even in a small workshop or garage. The performance of the electric pump when supplying coolant is 22 liters per minute. It is worth paying attention that the SF-676 milling cutter can process both small parts and overall blanks.

Due to the fact that the bed is made of cast iron, the occurrence of vibrations during the working process is excluded, which significantly increases the accuracy of processing in literally any conditions. It is also worth noting such an advantage as a wide range of rotation of the spindle head, whereby the operator selects the optimal mode of operation with metals of any hardness.

When completing the SF-676 with additional equipment and devices, it becomes possible to expand functionality machine. Shirokouniversalny and indispensable in the procurement workshops SF-676 is actively used in single and small-scale production.

1. Electric pump switch. 2. Network switch. 3. Stops for turning off the mechanical vertical feed. 4. Flywheel for manual movement of the table in the vertical direction. 5. Flywheel for manual movement of the table in the horizontal direction. 6. The handle of the accelerated course of a support and a headstock. 7. The handle of inclusion horizontal and vertical. 8. Speed ​​dial. 9. Vertical spindle manual feed handle. 10. Screws for clamping the headstock trunk and vertical spindle trunk. 11. Tool clamp square in horizontal spindle. 12. Cooling tube clamp handle. 13. Light switch. 14. Stops for turning off the mechanical cross feed. 15. Flywheel for manual rotation of the spindle. 16. Machine control panel. 17. Handles of inclusion of speeds. 18. Handles of inclusion of giving. 19. Disk of a set of giving. 20. Reversing the engine. 21. Stops for deviation of the mechanical longitudinal feed. 22. Table clamp handle in horizontal direction. 23. Vertical spindle clamping handle. 24. The handle of a clip of a support in a vertical direction. 25. Flywheel for manual feed of the headstock. 26. Headstock clamp handle. 27. Setting the vertical head to the zero position. 28. The handle for turning on the mechanical feed of the headstock. 29. An emphasis on the amount of movement of the vertical spindle. 30. Square tool taper clamp in vertical spindle.

Digital indication device.

The digital indication device (DRO) is installed on the machines of modification SF-676F2-40AT5, SF-676F2-KM4, SF-676F3-40AT5, SF-676F3-KM4. It is intended for joint work with optoelectronic raster converters of linear and angular displacements. The DRO processes and visualizes information about the movement of the controlled object.

Functionality:

1. Receives information about linear displacements from displacement transducers.

2. Supports the ability to control movement in three counting systems: absolute, relative, operational.

3. Simultaneously controls up to 3 movements in different planes of the part.

When operating the DRO, it is necessary to study the features and precautions reflected in technical documentation for accessories.

The wide-purpose milling machine SF-676 was produced by the plant Selmash Kirov since the 60s of the last century.

Since 2012, serial production of the SF-676 milling machine has been mastered by the company Vyatka Machine-Tool Plant, LLC, website: http://vsp-kirov.ru/.

SF-676 Wide-purpose milling machine. Purpose and scope

The SF-676 universal milling machine is designed for milling parts with cylindrical, disk and shaped cutters using a horizontal spindle, and face, end and key cutters using a rotary vertical spindle.

The universal milling machine is most preferably used in the tool shops of factories or workshops for the manufacture of small fixtures, tools, embossed dies and other products.

The machine is used in single and small-scale production in tool and machine shops of machine-building enterprises.

Design features of the universal milling machine SF-676

The SF-676 milling machine has two spindles - a horizontal and a rotary vertical one, which allow processing a complex workpiece without reinstalling it on the desktop, which significantly increases productivity.

On the SF-676 machine, you can perform a number of milling and boring operations with high accuracy, which can be achieved if the machine is installed in a room with constant temperature 20±2°С and humidity 65±5% if there are no sources of heat and vibration near the machine. On the machine, you can also perform drilling and reaming, slotting, centering, countersinking, reaming, reaming, boring.

A wide range of spindle speeds and feeds, the presence of mechanical feeds and fast movements provide economical processing of various parts in optimal modes.

Machine accuracy class H.

The horizontal and vertical spindles are located in the headstock and are connected to each other by a gear train. The headstock is mounted on horizontal guides and carries out cross feed on the machine. The cross feed of the headstock can be done from the engine through the feed box (16 feeds from 13 to 395 mm / min) or manually from the flywheel.

The gearbox informs the horizontal and vertical spindles of 16 different rotation speeds (50-1630 and 63..2040 rpm, respectively).

Advantages of using a wide-purpose milling machine SF-676:

• Cast massive cast iron bed absorbs vibrations and allows you to maintain the quality of parts machined on the machine
• It is possible to mill both small parts and parts up to 800 mm long, 250 mm wide and more
• The use of the machine in tool and machine shops with small-scale and individual production
• Implemented the ability to perform slotting operations (when purchasing a slotting head for an additional fee)
• Convenient (intuitive), classic machine control
• The small dimensions of the machine allow you to place it in almost any room, including the garage
• A wide range of rotation of the horizontal and vertical spindles allows you to choose the most suitable cutting conditions
• The supply of coolant is carried out by an electric pump. Electric pump capacity 22 l/min
• The machine has an additional spindle (vertical) head, located on a retractable trunk, which can be rotated at an angle of ± 90 degrees in two mutually perpendicular planes.

Modifications of the universal milling machine SF-676 (TU-3816-001-67559892)

• SF-676-40AT5- modification of the machine with a cone 7:24-40
• SF-676-KM4- modification of the machine with a cone KM4
• SF-676-KM4-F2- modification of the machine with DRO for 2 coordinates, cone KM4
• SF-676-40AT5-F2- modification of the machine with DRO for 2 coordinates, taper 7:24-40
• SF-676-40AT5-F3- modification of the machine with DRO for 3 coordinates, taper 7:24-40
• SF-676-KM4-F3- modification of the machine with DRO for 3 coordinates, cone KM4
• SF-676-L- lightweight modification of the machine for installation in mobile workshops

Analogues of the universal milling machine SF-676

• FSM-250/676M- Vladimir machine-tool plant "Tekhnika" VSZ, Vladimir
• OMM64S, OMM67S- "Mikron", Odessa
• BM130- Votkinsk Machine-Building Plant, Votkinsk
• DF-6725- Dmitrov plant of milling machines, Dmitrov
• VZ-371- VIZAS, Vitebsk, Belarus
• 676, 67K25PM, 67K25PF1, 67K25PF2-0- Irkutsk Machine Tool Plant, Irkutsk
• 6T80- Chita Machine Tool Plant, Chita
• 675P, 6725PF1, 67E25PF1- Yerevan Plant of Milling Machines, Yerevan, Armenia
• 676P, 67K25PR, 67K25PF1, 67K25PF2-0- Vilnius Machine Tool Plant "Komunaras", Vilnius (today Vingriai, JSC Vingriai, Lithuania
• X8132- Shandong Rooy Manufacture Co., Ltd., China

SF-676 Overall dimensions of the working space of the milling machine

Overall dimensions of the working space of the milling machine SF-676

SF-676 Landing and connecting bases of the milling machine

Landing and connecting bases of the milling machine SF-676

Photo milling machine SF-676

Photo milling machine SF-676

Photo milling machine SF-676

Photo milling machine SF-676

Photo milling machine SF-676

Photo milling machine SF-676

Photo milling machine SF-676

Photo milling machine SF-676

The location of the controls of the milling machine SF-676

The list of controls for the console milling machine SF-676

1. Electric pump switch
2. Network switch
3. Stops for shutting off the mechanical vertical feed
4. Flywheel for manual movement of the table in the vertical direction
5. Handwheel for manual movement of the table in the horizontal direction
6. Quick travel handle for caliper and headstock
7. The handle of inclusion of horizontal and vertical mechanical giving of a table
8. Speed ​​dial
9. Vertical spindle manual feed handle
10. Clamping screws of the headstock trunk and vertical spindle trunk
11. Tool holder square in horizontal spindle
12. Coolant tube clamp handle
13. Light switch
14. Mechanical cross feed cut-off stops
15. Spindle handwheel
16. Control buttons "start" and "stop"
17. Handles of inclusion of speeds
18. The handle of inclusion of giving
19. Feed set disc
20. Engine reversal
21. Mechanical longitudinal feed deflection stops
22. Table clamp handle in horizontal direction
23. Clamping handle for vertical spindle sleeve
24. Vertical caliper clamp handle
25. Handwheel manual feed headstock
26. Headstock Clamp Handle
27. Setting the vertical head to zero position
28. The handle for turning on the mechanical feed of the headstock
29. Vertical spindle displacement stop
30. Tool taper clamping square in vertical spindle

List of components of the universal milling machine SF-676

• Gear box - 751001
• Feed box - 752001
• Caliper - 763001
• Headstock - 766K001. Cone 7:24 40 (35.45); KM4 (2.3) at the request of the Customer
• Bed - 767001
• Electrical equipment - 67690000
• Tool kit and accessories - 7680000
• Vertical head (removable unit) - 764K001. Cone 7:24 40 (35.45); KM4 (2.3) at the request of the Customer
• Horizontal corner table (removable unit) - 7681К001
• Lighting LED 24V – 3 LEDs CL
• Oil station type Y-6 with a manifold for 8 adjustable dispensers
• Protection of the Z-axis guides (accessories PO Techmash)

Additional specification of the universal milling machine SF-676

• Digital indication unit with direct system on linear transducers in X, Y or X, Y, Z coordinates (components of OAO SKB IS)
• Sealed lighting LED 24V – 5 LEDs CL
• Oil station type Y-8 with a manifold for 8 adjustable dispensers
• Removable horizontal tables with grooves according to the Customer's requirements
• Trunk with earrings for special products
• VFG 764K001 with various cones

Description of the design of the universal milling machine SF-676 and its accessories

The SF676 universal milling machine consists of the main units (list below), which organically determine its design, and a number of removable units and accessories, thanks to which its operational capabilities are significantly expanded

On a cast-iron base, a bed is fixed, on which all the main components of the machine are mounted.

Gear boxes and a feed box are installed on the side of the frame.

In the upper part of the bed, along horizontal guides, the headstock with a horizontal spindle moves. To the front end of the headstock, if necessary, attach the head of the vertical spindle.

The caliper moves along the vertical guides of the bed, and the table moves along the horizontal guides of the caliper.

An angular horizontal table is attached to the vertical (base) plane of the table, which serves to install and fasten the workpieces.

The electric motor for driving the main movement chain and the feed chain is placed in the base. The coolant is supplied by an electric pump mounted on a base, which is also used as a reservoir.

Electrical equipment is located under the covers in the frame.

Machine spindle speed box SF-676

The gear-type gearbox is assembled in a special housing, which is flange-mounted to the side of the frame, informs the horizontal and vertical spindles of 16 different speeds by selective dialing.

The speed change is made by the switching mechanism located on the front wall of the box body, as follows: the speed change handle (4) must be lifted up. In this case, discs (6) having a number of holes are bred. When the speed dial disc (1) and the associated discs are rotated, the position of the disc holes relative to the pins (7) changes. This is the preparation for switching gears.

A downward movement of the shift lever brings the discs back to their original position. At the same time, the fingers, moving, translate the transfer gears of the gearbox with the help of levers.

When switching, cases of coincidence of the ends of the teeth of the meshed gears are possible. In this case, the disks are not reduced. In this case, it is necessary to turn the shaft 1 with the flywheel (see Fig. 6).

To avoid gear breakage, gear shifting under load is prohibited.

SF-676 milling machine feed box

The feed box tells the caliper and headstock 16 different feeds and rapid movements.

The shafts of the feed box receive rotation from 1 shaft of the gearbox (see Fig. 6). The last (driven) shaft of the gearbox is connected to the roller, on which two sprockets (10, 11) are placed (see Fig. 10), which transmit movement to the caliper and headstock mechanisms.

The change in feeds is carried out in the same way as the change in the gearbox (see the description of the gear set mechanism in the “Gearbox” node).

When switching feeds, it is necessary to ensure that the cross handle of the caliper is in the neutral position.

Rapid movement is carried out by pressing the handle (7). When the handle is released, the cutting feed continues.

For the implementation of a constant direction of rotation of the gears of the feed box when the gearbox is reversed, the gear (9) is used, which automatically maintains the direction of rotation.

A piston pump (5) is used to lubricate the gears of the gearbox, feed box and headstock. The piston (4) of the pump is driven in reciprocating motion from the eccentric of the gear (9). During the reciprocating movement of the pump piston, oil is sucked from the bed reservoir and sprayed. An oil mist is created, which lubricates all gears. To monitor the operation of the pump, a transparent eye (6) is installed on the flange of the feed box, in which oil pulsation is visible.

Milling machine support SF-676

The support carries the main table (9) of the machine with a vertical working plane and moves it in the vertical and horizontal directions.

The caliper consists of a body (5) having vertical guides in the form of a "dovetail"

Moving along the guides of the bed, the caliper carries out a vertical feed of the table. Longitudinal feed is made by moving the table along the horizontal guides of the caliper.

In the case of a support the mechanism of management of giving of a table is located. The control mechanism is driven by the running shaft (4), which receives rotation from the feed box, and transmits rotation to the vertical (3) and horizontal (12) lead screws.

Spindle head of the milling machine SF-676

The horizontal spindle (1) is mounted in a special housing (12), which moves along the guides of the bed, thereby carrying out the transverse feed of the machine.

The spindle receives rotation from the gearbox through the intermediate drum gear (18) (see Fig. 11) mounted in the bed and the gear (9) sitting on the spindle.

The upper guides of the headstock are designed to mount the vertical head (Fig. 15) and the trunk (11). An earring (17) is attached to the trunk to support the mandrels. The clamping of the vertical head, trunk and earring is carried out with crackers when screwing the screws (10) (see Fig. 5) with an internal hexagon.

The front support of the horizontal spindle is a double row roller bearing (4) with a tapered bore. Axial loads are taken by thrust ball bearings (5). The middle and rear bearings of the horizontal spindle are deep groove ball bearings (8.10), which simultaneously serve as pinion bearings (9).

The clamping of the tool in the horizontal spindle is carried out by a ramrod (13).

The amount of mechanical movement of the headstock is set by intermediate stops (16).

The headstock is moved by a screw (14) rigidly connected to it and a rotating nut (17) (see Fig. 10) fixed in the frame.

The design of the machine provides the possibility of precise movements of the headstock for jig boring work. To do this, an indicator holder (18) is installed on the headstock, and a tile holder is attached to the frame, on which tile-parallel measuring tiles are installed.

Head vertical milling machine SF-676

The vertical spindle is mounted in a special head with a trunk for mounting in the upper guides of the headstock. If necessary, the head can be turned on the faceplate of the trunk (18) by ±90° from the vertical. Zeroing in the vertical position is fixed by two conical pins with a handle. The clamping of the head on the faceplate of the trunk is made with bolts with an internal hexagon.

The vertical spindle (23) is mounted in a sleeve (5), which is manually moved in the housing (6) by means of a pinion roller (24).

The sleeve is clamped with a star handle (25), which has a hexagon for a more reliable clamping.

The weight of the spindle is balanced by a spiral leaf spring, one end of which is connected to the pinion roller, the other - to the body of the vertical head.

The bevel gears of the head are supported by double radial bearings (10,17). The rotation of the spindle shank from the vertical bevel gear (9) is transmitted by splines. The horizontal bevel gear (19) receives rotation through the splines from the horizontal shaft (20).

The lower support of the vertical spindle is a double row roller bearing (3) with a tapered bore.

The upper support of the vertical spindle - two angular contact bearings (7), which also perceive axial loads.

The vertical head is lubricated daily using ball grease fittings (8.11). Labyrinth seals (1.13) protect against grease leakage and contamination.

Table angular horizontal universal machine SF-676

The angular horizontal table is a cast iron and is bolted to the vertical surface of the main table.

The horizontal plane of the table has three T-shaped slots.

Vise

The vise is attached to the machine for fastening parts, they have a 360 ° rotation in the horizontal plane. The vise can be installed both on the vertical surface of the table and on the horizontal, as well as on the round table.

The table is round

The rotary table with a manual drive is intended for installation and fixing of parts during their processing. The table can be installed both on the vertical surface of the main table and on the horizontal surface of the table.

Slotting head for machine SF676

The cutter (3) of the slotting head is mounted in a special housing (5) with a trunk (9) for mounting in the upper guides of the headstock.

The trunk is interchangeable and serves for vertical mounting of both vertical and slotting heads

The electrical circuit of the milling machine SF-676

SF-676 Wide-purpose milling machine. Video.

Technical characteristics of the milling machine SF-676

The 676 milling machine is a versatile piece of equipment used for milling a variety of workpieces. The unit can work with key, end, disk and other types of cutters. The configuration of the machine makes it possible to mill workpieces horizontally and vertically, which significantly expands the capabilities of the unit.

Description

The 676 multifunctional milling machine can be equipped with a rotary vertical spindle or its horizontal equivalent. The first option allows you to process parts using face and key cutters, and in the second case, shaped cutters, as well as disk and cylindrical counterparts, are used.

The main difference between the equipment in question and similar machines is the presence of a second spindle head, which is adjustable in perpendicular planes. The unit in question can use both spindles at the same time. In addition to milling, the equipment is designed for drilling, countersinking and boring.

In the industrial field, the 676 machine is used to perform a number of operations, namely:

• Carrying out processing of internal and external surfaces, including rotary bodies, by turning.
• Cutting ledges and grooves.
• Turning splines on shafts.
• Formation of the configuration of gears.

Peculiarities

The 676 milling machine is classified as a high-precision milling machine (class H). The maximum accuracy of processing is achieved if there are no sources of vibration near the machine during operation, the ambient temperature is within 20 ° C, and the humidity is about 65%.

The equipment in question is used in single and small-scale production, mainly at machine-building enterprises and tool factories. The popularity of the 676 milling machine is influenced by a number of advantages compared to competitors:

1. The frame of the equipment is made of cast iron, has a large mass, providing reliable stability without vibration, which guarantees high-precision processing.
2. The versatility of the equipment allows you to work with small-sized workpieces and parts up to 0.8 m long and 0.25 m wide.
3. The unit can be equipped with a slotting tip, with the ability to perform the appropriate operations.
4. The relatively small dimensions of the machine make it possible to place it even in an ordinary garage.
5. The multi-level range of rotation of the spindle heads contributes to the optimal selection of metal finishing modes, depending on their hardness.

676: specifications

Below are technical specifications equipment in question:

• The size of a horizontal/vertical working table - 250*800/250*630 mm.
• The maximum weight of the workpiece installed for processing is 100 kg.
• Axial distance from spindle to table - 80-450 mm.
• Spindle extension - 125-375 mm.
• Headstock travel along the X / Y axes (maximum) - 300/380 mm.
• Spindle speed (horizontal / vertical) - 1630/2040 rpm.
• Number of speeds - 16 pieces.
• Overall dimensions - 1200/1240/1005 mm.
• Weight - 1000 kg.
• Electric drive power - 3 kW.

In addition, the 676 universal milling machine is equipped with an auxiliary coolant system with a motor that activates an electric pump with a capacity of 23 liters per minute.

Differences between models 676P and SF-676

Modification 676P differs slightly from SF-676:

• It has a distance along the axis from the table to the spindle by 10 mm less.
• The vertical movement of the spindle head is 250 mm.
• The power index of the main electric drive is 2.2 kW.
• Weight - 910 kg.
• Dimensions - 1260/1210/1780 mm.

The wide-purpose milling machine 676P belongs to obsolete modifications, and is now not produced. You can buy it only in the secondary market.

Device

The machine bed 676 is made of cast iron and serves as a load-bearing base with the main structural elements fixed on it. On the left side of the bed, a speed block and a feed box are installed. On the upper surface of the skeleton moves the headstock with a horizontal spindle installed. On this element, if necessary, a vertical spindle device is installed.

The caliper is mounted on vertical rails, the table - on horizontal elements. The machine is equipped with a main horizontal table and an additional vertical counterpart. Workpieces up to 800 mm in length and 250 mm in width are fixed on the main workbench.

The electric drive of the unit is located in the lower part of the frame, placed on a support in the form of a plate, inside of which there is a container for the coolant. All the electrical filling of the machine is located under the bed cover in the upper part. This design does not impede access to the nodes for repair or maintenance.

The main functional parts of the milling machine are the caliper and the spindle head. The purpose of the caliper is to hold and move the desktop in the transverse-longitudinal plane. The element is driven by a drive shaft that transmits torque from the power unit to the feed box.

The headstock aggregates with the feed box through the drum gears, the spindle itself is mounted on radial and ball bearings. The accuracy of its movement is provided by the indicator holder.

Maintenance

The wide-purpose machine SF-676 requires regular maintenance. Necessary:

• After 10 hours of operation, lubricate the guides and
• Lubricate linear bearings with machine grease every 40 hours.
• After 400 hours of operation, inspect and adjust the belts in the feed box, as well as tighten the screw assemblies.

Before the first working start-up of the machine, it is necessary to check the reliability of fixing the safety covers, clean the working table from liquids and lubricants, turn on the unit and check its operation at idle.

Health check

This process begins with the equipment running at a minimum speed, gradually increasing it to a maximum rate. In the main working gear of rotation, the machine must work for at least two hours, while the spindle supports cannot be heated above 50 degrees.

After checking the unit at idle, it is subjected to a load. The milling cutter should work at the maximum cutting force in the short-term 25% overload mode. At normal operation in this mode, the appearance of vibrations is not observed and high processing accuracy is maintained.

Milling cutters for metal

A variety of cutter configurations allows you to select material in the most inaccessible areas, so that the part takes the required size and shape.

Cutters are classified according to the location of the structure, direction, shape of the teeth, method of attachment and material of the cutting tool.

Modifications:

1. Disc cutters are used for trimming workpieces, grooving, metal, chamfering. The cutting part of such elements can be placed on one or both sides.
2. Face mills work with flat preparations of stepped type. working part tool is the end, the axis of rotation is perpendicular to the surface of the workpiece.
3. A cylindrical cutter for metal for a milling machine can be with helical or straight teeth. The first option allows you to process the workpiece smoothly, and the second configuration allows you to finish narrow planes, so this tool belongs to the universal category.
4. corner options. Such cutters are used for processing inclined surfaces and have a conical configuration. There are one and two-angle modifications, which differ in the placement of the cutting edge.
5. End mills are designed to create grooves, contour recesses, ledges and processing mutually perpendicular parts.

There are also shaped, worm and ring cutters. They are used for processing shaped surfaces and workpieces of extraordinary configurations and further expand the capabilities of the 676.