Technical characteristics of the grinding and grinding machine 3B634

Equipment for detailed processing of products

All this is special equipment for manual sharpening and finishing of various types of tools:

• The floor-standing grinding and grinding machine model 3K634 is equipped with two grinding wheels, type PP 400×50×203, PV 400×50×203.
• With a diameter from 110 to 450 mm or more, depending on the type of equipment and manufacturer.
• The height of the incisors to be sharpened should be in the range of 6–100.
• The permissible sharpening angle of the drill is from 70 to 140 degrees.
• Parts are processed with a universal wheel for detailed polishing of products H – 55 mm, D – 400 mm, Dpos – 50 mm.
• The spindle operates at a maximum speed of 30 m/min and a permissible rotation speed of 1.44 thousand revolutions per minute.
• Machine dimensions – 1000×665×1230 mm.
• The weight of the machine reaches 425 kg depending on the type of unit.

The equipment is mainly used for processing certain batches of parts; manipulations are carried out for finishing and repairing products for subsequent full-fledged work.

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Purpose of the grinding unit

Grinding and grinding machine 3b634

The grinding machine brand 3B 634 is capable of:

• carry out manual finishing and grinding of metal-cutting equipment;
• remove chamfers and burrs;
• perform additional functions for cleaning the edges of small parts.

It is worth noting that the technical characteristics of the model allow you to install a polishing washer on the machine. Then it will be possible to carry out belt grinding and straightening of metal wheels.

Information about the manufacturer of the grinding machine model 3B634

The grinding and grinding machine model 3B634 was produced by the Mukachevo Machine Tool Plant named after. Kirov is currently Mukachevo Machine Tool Plant, OJSC .

The model 3B634 sharpening and grinding machine is no longer produced and has been replaced by the more advanced machine model 3K634.

Machine tools produced by the Mukachevo Machine Tool Plant named after. Kirov

• 3B632, 3B632v
  - sharpening and grinding machine for sharpening cutters 50 x 50
• 3B634
  – floor-mounted grinding and grinding machine Ø 400
• 3D641e
  - universal sharpening machine Ø 250 x 650
• 3K631
  — tabletop grinding and grinding machine Ø 150
• 3K634
  – floor-mounted grinding and grinding machine Ø 400
• 3L631
  – tabletop grinding and grinding machine Ø 200

General description of the model

Grinding and sharpening machine - passport 3b 634. It is based on an electric motor with 2 speeds and located in the inside of the working head. The protruding shaft is a spindle designed to perform rotational movements.

The main components of the structure include:

• frame with cast iron;
• an electrical cabinet located inside the frame, accessible through an opening in the front part;
• hermetically sealed door in the opening;
• grinding wheels, size 40x60x203, attached to the conical part of the adapter flanges and rotating due to crackers (3 pcs.);
• spindles that help balance grinding wheels;
• pipe connected to the hood;
• a bushing in the upper part of the casing as a mount for a protective screen;
• a dust collector located in the lower part of the casing with the ability to collect dust up to 48% and absorb debris from the working area of ​​the equipment;
• turntable;
• a tool rest with the ability to move vertically along the grinding wheel and around its axis.

Grinding and grinding machine Intertool WT-0815

The model also has a special visor located at the top of the equipment on the left, the function of which is to maintain a gap of 6 mm between the built-in lamps and light bulbs (41.6 W) to provide better lighting.

A turntable in the form of a steel plate, attached to cast iron brackets, rotating along curved guides. Thus, when moving horizontally, the table performs a compensation function and does not lead to wear of parts during grinding.

The main thing, when working at the machine, is to ensure that there is no gap between the tool rest and the grinding wheels, the diameter of which must be at least 2.8 mm.

Electrical equipment of the machine

To operate the machine, a three-phase AC electrical network is used, and the lighting system requires direct current with a voltage of 12 V, which is supplied by a step-down transformer. The rotation of the working circles is ensured by a two-speed electric motor 1M.

Electrical diagram of the machine

To control the operation of the sharpening and grinding machine, a push-button station is used, conveniently located on the front of the bed. Using a push-button station allows you to effectively manage all the main and auxiliary processes of the equipment, such as:

• turning on (“START”) and turning off the machine (“STOP”);
• selection of wheel rotation speed (rotary switch “PS”);
• lighting of the processing area (automatically turns on when you press the “START” button).

All other electrical equipment of the machine, as mentioned above, is located in a special cabinet in the inner part of the frame. To prevent accidental access to the inside of the machine's electrical cabinet and protect it from negative external factors, a sealed cover is mounted on the front of the frame.

At the time when the machine of this model was still in production, it could be ordered in an improved configuration, which included equipping it with a 2M electric motor and a separate ventilation device.

Device

The sharpening and grinding equipment is installed on a steel vertical stand in a prepared room of a small repair shop or in utility rooms, and is powered by a single-phase AC mains voltage of 220 V.

The working tools for the machine are abrasive wheels made of CBN, technical corundum, and electrocorundum. Diamond bonded discs can be used for sharpening various cutting tools - knives, cutters, drills, chisels.

The kinematic diagram of the machine provides for the transmission of torque to both ends of the output shaft, to which two abrasive wheels are connected. They can have different grain sizes, so on a 3K634 type sharpening and grinding machine you can perform both rough and fine grinding. Range of technological capabilities of 3K634 equipment:

• Sharpening;
• Polishing;
• Ripping;
• Descaling (for small-sized castings);
• chamfering;
• Edge preparation;
• Finishing of carbide plates.

Mounting holes are used to install the machine. 3K634 includes units:

• Cast iron body with mounting bosses for fastening studs.
• Horizontally located electric motor with two stages of rotor rotation speed.
• Support shaft rotating in double ball bearings designed for significant axial loads.
• The top cover, inside of which a ventilation device with an impeller is mounted for continuous cooling of the drive.
• Built-in cabinet with elements of the electric drive system.
• Housing with control buttons.

The working tools on the 3K634 are abrasive wheels, which are installed on the output parts of the shaft and covered with protective covers. A protective screen made of durable acrylic glass is installed in the slot of each casing, behind which the worker can carry out the necessary grinding or turning operations without the risk of injury or damage. For sharpening, the sharpening and grinding equipment is equipped with a movable shutter, which can move left and right. The side walls of the casing are quick-removable, which is used when it is necessary to visually inspect the periphery of the abrasive disc and to replace it.

3K634 design features and capabilities

At the bottom of the casing there is the possibility of connecting a dust bag, which collects small metal waste, as well as turning chips. For intensive processing of workpieces, this equipment can be connected to the hood of the exhaust system of a workshop or workshop.

Proper sanitary and hygienic operating conditions of the grinding machine are ensured by the presence of a built-in lamp, the characteristics of which are designed for the use of lamps with a power of 40 W and a voltage of up to 36 V inclusive (it is not safe to buy used equipment without a lamp!). The lamp leg can be rotated at an angle of up to 15°, which provides good lighting conditions when grinding various parts.

Before purchasing a 3K634 machine for grinding work, it is worth remembering that the equipment must be equipped with a rotary-type tool table. The table is attached to the equipment body and allows movement along a curved path, which is convenient when sharpening twist drills. Thus, with a fixed axis of the grinding disk, the sharpening surface can vary within the required limits. Moving the table on 3K634 allows you to take into account the wear of the working edge of the circle.

Technical characteristics of model 3K634

The basic model has the following technical parameters:

• The largest outer diameter of the grinding wheels used is up to 400 mm.
• The maximum thickness of the circle is up to 50 mm.
• The height of the shaft at the centers is 900 mm.
• The range of sizes of sharpened turning tools is 6-100 mm.
• The range of sizes of sharpened drills is 6-60 mm.
• The shape of the working part of the drill is conical, with a cone angle of 70-140 mm.
• The highest technological grinding force is 1000 N.
• The spindle shaft speed is 1440 min-1.
• The radial rotation speed of the spindles is 30 m/s.
• The length of the free part of the spindle for tool installation is 40 mm.
• Electric motor power 4 kW.
• Overall dimensions in plan: 1000×630×1230 mm.
• The mass of the assembled machine, but without tooling, is 358 kg.

3B632 sharpening and grinding machine for sharpening cutters. Purpose, scope

A sharpening and grinding machine with two wheels, model 3B632V, for manual sharpening and finishing of cutters with diamond wheels with a holder height of up to 50 mm when working both with cooling and dry.
The 3B632V machine can be used for sharpening cutters with abrasive wheels.

The following work is performed on the machine:

• sharpening and finishing of cutters on the main and auxiliary rear surfaces;
• sharpening of cutters with a leading angle of 0°; 45° and 60° on the front surface.

Grinding head

Grinding head of grinding and grinding machine 3B632

The main part of the machine is the head (Fig. 5), which is a two-speed electric motor, the shaft of which is the spindle of the machine.

The stator, rotor and fan impeller are housed in a housing consisting of a cast-iron stator housing and two covers with ball bearing supports located in them.

The bearing supports are double angular contact ball bearings C36206.

The seal is carried out on the outer sides with axial labyrinth seals, and on the inner sides with fatty grooves.

The drive is a built-in two-speed electric motor.

The electric motor is cooled by air circulation in the head and frame, for which the supporting planes of the head covers have windows connecting the internal cavities of the frame and head.

There are two trunnions on the head covers for attaching protective covers.

The head is secured to the frame using pins.

bed

The frame is a cast iron with an electrical cabinet housed in it.

There are two windows in the upper supporting surface that connect the internal cavity of the frame with windows for cooling the electric motor in the head.

A panel with electrical equipment is mounted on four lugs inside the frame. Access to electrical equipment is provided by a hole in the front wall, hermetically sealed with a door.

A control panel with two speed and reverse switches is mounted on the front wall of the frame.

Complete set of machine TSH-2.10

The machine is delivered assembled, in special packaging (allows for its transportation and long-term storage)

The set and price of the machine includes:

• Grinding wheels 2 pcs: 300x40x76, 25A F46 K-L٭ 1700 (GOST P52588-2006), 300x40x76, 64C F46 K-L٭ 1700 (GOST P52588-2006);
• Work area protection: circle fencing 2 pcs., protective screens 2 pcs.;
• Work area lighting: local lighting lamp 1 pc;
• Electrical control: push-button, with zero protection.

Included with the machine:

• Operating manual 1 copy;
• Technical documentation for equipment;
• Equipment installation drawings;
• A certified copy of the GOST ISO 9001 equipment certificate;
• Certified copy of the security certificate
• Certified copy of the customs declaration

The TSh-2.10 machines are not equipped with a device for shutting off the electric motor when the protective screen is raised, only the TSh-2.20 modification. The warranty period for the equipment is 12 (twelve) months from the date of commissioning, but not more than 18 (eighteen) months from the date of sale.

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What technological operations can be performed on the 3B634 machine

Due to its technical characteristics and design features, the 3B634 machine, which belongs to the equipment of the sharpening and grinding group, allows you to perform the following technological operations:

• sharpening of cutters up to 100 mm high, made of high-speed steels or equipped with carbide cutting inserts;
• sharpening drills with a diameter from 12 to 50 mm;
• sharpening of various tools used to perform plumbing work;
• cleaning operations - removing burrs, forming chamfers on the surface of a part and other types of metalwork;
• grinding of parts, for which an abrasive belt is used;
• polishing operations.

The high functionality of the 3B634 sharpening and grinding machine is also ensured by the fact that its design provides two working wheels at once.

Model features

On the sharpening and grinding machine 3b 634 you can not only sharpen products, but also carry out roughing and polishing work, and belt grinding. To ensure greater functionality, additional devices can be attached at any time by placing them on the trunnions mounted on the covers of the working head.

These are excellent assistants that not only firmly fix the sharpening machine casings, but also serve to secure the working head on the frame in the form of pins attached to the equipment.

It is worth noting that the electric motor of this brand of machine quickly overheats and therefore requires cooling. Although the design provides an air duct through which air circulates through the external cavity and unhindered penetration into the working head through a window in the supporting part.

One of the design features of the machine is the presence of built-in ball bearing supports, which provide stability to the protruding parts of the electric motor shaft and give them rotational accuracy. These are quite high-precision, persistent ball bearings with sealing elements, grease and axial labyrinth grooves placed on both sides.

Each element in the design of the sharpening machine is firmly fixed to a cast-iron frame, the inner part of which is hollow, where it is located in the electrical equipment. For unobstructed access, there is an opening in the front of the frame, as well as a sealed lid for closing.

Equipping the machine with special equipment

The 3K634 machine is equipped with additional equipment - a support table, which is used to sharpen drills with an allowable diameter from 6 to 60 mm. It is also possible to carry out operations for chamfering and polishing workpieces with a preliminary selection of the operating mode of the machine.

Basic parameters for processing workpieces:

• Processing of the workpiece using the optional 300 cm sanding belt.
• Sharpening of cutters with parameters from 6 to 100 mm.
• Use of abrasive wheels with indicators: D- 400 mm;

The 3K634 machine is used mainly for processing individual small batches of parts and when carrying out repair work.

3K634 Floor-mounted grinding and grinding machine. Purpose, scope

The 3K634 sharpening and grinding machine replaced the outdated machine model 3B634

The sharpening and grinding machine with two wheels model 3K634 is designed to perform the following operations:

• sharpening of high-speed cutters equipped with carbide plates with a height of up to 100 mm;
• sharpening drills with a diameter of 6..60 mm;
• sharpening of metalwork tools;
• removal of burrs, chamfers and other metalwork works;
• grinding parts with an abrasive belt;
• polishing parts

It is not recommended to use the machine for stripping cast and welded parts.

Design features and operating principle of the machine

Photo of sharpening and grinding machine 3k634

The main part of the machine is the head (Fig. 5). A two-speed electric motor is mounted in the head, the shaft of which is the spindle of the machine. The stator, rotor and fan impeller are located in a housing with two covers, which house the ball-bearing spindle supports (Fig. 6).

Ball bearing supports are double high-precision angular contact ball bearings No. B36209L with selected axial play. Axial labyrinth seals are made on the outer sides, and fatty grooves on the inner sides.

The electric motor is cooled by air circulation, for which the head support covers have windows connecting the internal cavities of the frame and the head. For fastening protective covers and some devices (for polishing, belt grinding, etc.) there are two trunnions on the head covers. The head is fastened to the frame using pins.

The frame is a cast iron with an electrical cabinet housed in it. A panel with electrical equipment is reinforced inside the frame. Access to electrical equipment is possible due to the presence of an opening in the front wall, hermetically sealed with a door.

Grinding wheels of types 1-400 x 50 x 203 (flat straight profile) and 5-400 x 60 x 203 (flat with recess) are installed on the machine. The circles are mounted on adapter flanges mounted on the conical part of the spindle. The adapter flanges on the outside have three crackers, with the help of which the grinding wheels are balanced.

Grinding wheels are protected by protective covers made of sheet steel.

On the front wall of the casing there is a gap for access to the grinding wheel. In the upper part of the throat there is a visor, with the help of which a gap of no more than 6 mm is maintained between the visor and the grinding wheel, in the lower part of the throat there is a retractable flap for dust suction. When installing a device for sharpening drills, the flap is completely pushed into the casing. The side wall of the housing is hinged to the housing and can be quickly removed for replacement and inspection of the grinding wheel.

At the bottom of the casing there is a dust collector, which collects up to 40% of the dust sucked from the operating area of ​​the machine. The dust collector must be cleaned of accumulated dust at least once per shift.

The casing is equipped with a pipe for connection to the exhaust system. A bushing for fastening the protective screen is welded to the top of the casing.

The protective screen (Fig. 9) is made integral with the lamps. For ease of use, the screen can be rotated about the horizontal axis by 15°. The lamps are equipped with two 41.6 W lamps, providing good illumination.

For sharpening cutters and cleaning parts, the machine is equipped with a rotary table (Fig. 10) and a tool rest (Fig. 11). The turntable is a steel plate screwed to a cast iron bracket that can move along a curved guide. Thus, the table can occupy an inclined position relative to the end of the grinding wheel. The table guide is attached to a bracket, which, in turn, is attached to the bed. As a result of two movements of the table in the horizontal plane, wear of the circle along the end and side surface is compensated.

The tool rest is a steel part with two working surfaces: flat and curved. It is recommended to use a flat working surface when grinding parts that have a supporting plane. If you need to grind the curved surface of a part in the absence of a good reference plane or if you need to frequently readjust the angle of the tool rest, you need to use a curved working surface of the tool rest. The attachment of the hand rest to the bracket is made in such a way that it can move in a circle, vertically and rotate around an axis. It is necessary to ensure that the gap between the circle and the tool rest is no more than 3 mm.

Advantages

The 3K634 sharpening and grinding machine has the following advantages:

• simplicity of design;
• multifunctionality;
• versatility;
• quality of equipment and its components;
• ease of installation and operation;
• accuracy of work;
• safety;
• attractive price;
• reliability and strength;
• long service life.

Design and equipment of the unit

The 3b634 sharpening machine has quite high functionality. The design includes:

• 2 working circles for performing rotational movements;
• electric motor with 2-speed modes, mounted in the inside of the head;
• a motor shaft with a protrusion on both sides of the cover, which acts as a spindle in the equipment.

The main features of this model include:

• the presence of a rotary table with a tool rest and 2 working surfaces (curvilinear, flat), for grinding parts;
• the ability to move the table horizontally to avoid rapid wear of the working circle;
• the right hand rest is equipped with a rotating mechanism and you can change the angle of inclination of the supporting surface if necessary;
• the presence of openings in the protective covers for better access to the workpiece and the surface of the working circle;
• moving the rotary table along curved guides to install the machine at an angle relative to the ends of the working circle.

Rotary table of grinding and grinding machine 3B634

Equipping the machine with transparent protective screens is necessary for safer and freer observation of the entire process and work performed.

The presence of powerful lamps with the ability to rotate 15 degrees horizontally, which is convenient when working with this sharpening and grinding equipment.

3B634 Arrangement of components of a grinding machine

Arrangement of components of the grinding and grinding machine 3B634

3B634 list of components of a grinding machine

1. bed
2. head
3. PP wheel mount (straight profile flat grinding wheel)
4. fastening the PV wheel (flat grinding wheel with a recess on one side)
5. left casing
6. right casing
7. screen
8. rotating table
9. left hand rest

3B634 Specification of components of a grinding machine

1. Bed 3B634.10A.000
2. Head 3B634.22.001
3. Mounting circle PP 3B634.30.002
4. Mounting circle PV 3B634.31.002
5. Left casing 3B634.40.001
6. Right casing 3B634.41.001
7. Screen 3B634.42A.001
8. Right rotary table 3B634.54B.001
9. Left hand rest 3B634.56.001
10. Electrical equipment 3B634.80.000
11. Control panel 3B634.88.000
12. Accessories 3B634.90.000

Operating rules

Before using the machine, you must perform the following steps:

• Install the equipment on a level surface, without additional elevation.
• Provide the room with a 380 V electrical network; it is operational for 3K634.
• Take care of forced ventilation.
• When connecting, check the correct rotation.
• Check the functionality of the circuit breaker, which provides overload protection.

Before operating the machine, the operator must undergo appropriate training. Since the electrical part wears out during long-term operation, personnel must periodically check these elements of the machine.

When starting up new equipment for the first time, wipe it with a rag soaked in acetone or gasoline to remove the anti-corrosion coating. After checking the serviceability of all elements, specialists launch it.

It is imperative to balance the abrasive wheels, which, when rotating, should not create a feeling of beating.

Device control system

The operation of the grinding and grinding machine of this model is controlled using the following technical elements:

• a switch that turns on the electrical power of the machine;
• buttons for turning on (“START”) and switching off (“STOP”) equipment;
• a switch responsible for supplying power to the machine lamp;
• equipment speed switch.

Machine controls

Structural elements of the 3B634 machine

The design of the grinding and grinding machine of this model includes the following elements:

• supporting frame;
• working head;
• device for fixing circles PP type;
• device for fastening circles type PV;
• two protective covers – left and right;
• transparent protective screens;
• turntable;
• handyman

Safety precautions

To safely use the 3K634 roughening, grinding and grinding machine, the following rules must be observed:

• Installation of equipment is carried out only on a level basis.
• The place where the machine works must be equipped with forced ventilation.
• The unit must be grounded.
• The machine must not be left unattended while the engine is running.
• You should leave the room only after the engine has completely stopped.
• Periodically, all equipment mechanisms are cleaned of abrasive dust.

Technical characteristics of the grinding grinding machine 3B634