CN211516938U - High-precision grinding machine for machining gear - Google Patents

Abstract

The utility model relates to a high-precision grinding machine for processing gears, which relates to a grinding machine and aims to solve the problems that in the prior art, the local temperature of a workpiece is increased due to heat generated by friction in the grinding process of the workpiece, so that the local deformation of the workpiece is caused, and the processing precision of the workpiece is reduced; the main technical scheme includes that the cooling device comprises a workbench, a clamp arranged on the workbench and a cooling assembly arranged below the workbench, wherein an air cylinder is arranged below the workbench and arranged along the height direction of the workbench; a driving motor is arranged on the top wall of the workbench, a transmission shaft is arranged on the end wall of a motor shaft of the driving motor, a grinding wheel is arranged at one end of the transmission shaft, which is far away from the driving motor, and the peripheral wall of the grinding wheel is contacted with the peripheral wall of the workpiece; therefore, when the workpiece is machined, the cooling assembly absorbs heat generated by friction between the grinding wheel and the workpiece, the possibility of deformation of the workpiece due to temperature rise is reduced, and the possibility of reducing the machining precision of the workpiece is reduced.

Description

High-precision grinding machine for machining gear

Technical Field

The utility model relates to a grinding machine especially relates to a processing high accuracy grinding machine for gear.

Background

The grinding machine is a machine tool for grinding the surface of a workpiece by using a grinding tool; in machining a rotary workpiece, particularly a gear, in a grinding machine, it is necessary to limit the rotation direction of the gear by using a key groove previously machined in the gear on a gear clamping frame table, and then to start grinding the outer peripheral wall of the gear by using a grinding wheel rotating at a high speed.

The Chinese patent with the publication number of CN203380753U discloses a multifunctional universal vertical grinding machine; in the process of mechanical processing, the grinding of the inner hole has the problems of low processing precision, insufficient grinding and the like; the utility model discloses a constitution includes: the grinding machine comprises a base, wherein a machine shell and a static pressure vertical rotary table are mounted on the base, a vertical grinding machine pitch circle clamp is mounted on the static pressure vertical rotary table, a motor A is mounted in the machine shell and connected with a gear box, and the gear box is connected with a universal grinding head; the utility model is used for grind the hole.

The above prior art solutions have the following drawbacks: this grinding machine is when using, on the vertical revolving stage of work piece clamping static pressure, vertical grinding machine pitch circle anchor clamps fixed work piece, again rise the work piece and want the contact with universal bistrique, the motor passes through the universal bistrique of gear box drive and rotates, universal bistrique and the continuous friction of workpiece surface, accomplish the processing on the surface of work piece, this in-process, universal bistrique and workpiece surface can produce a large amount of heats because of the friction and lead to local temperature to rise, lead to universal bistrique and work piece to take place local deformation very easily, and then lead to the machining precision of grinding machine to reduce.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a processing high accuracy grinding machine for gear, its advantage lies in the heat that absorbs emery wheel and workpiece surface fast and produce, reduces workpiece surface temperature and risees and cause local deformation, reduces the possibility that reduces work piece machining precision.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a high-precision grinding machine for machining gears comprises a workbench, a clamp arranged on the workbench and used for clamping workpieces, and a cooling assembly arranged below the workbench and used for absorbing heat generated by machining of the workpieces, wherein an air cylinder used for driving the clamp to move is arranged below the workbench and arranged in the height direction of the workbench;

the top wall of the workbench is provided with a driving motor, the end wall of a motor shaft of the driving motor is provided with a transmission shaft, one end of the transmission shaft, which is far away from the driving motor, is provided with a grinding wheel, and the peripheral wall of the grinding wheel is in contact with the peripheral wall of the workpiece.

By adopting the technical scheme, when a workpiece is to be polished, the piston rod of the air cylinder contracts to drive the clamp to move downwards, the workpiece is clamped on the clamp, the piston rod of the air cylinder extends out to drive the clamp to move upwards, the surface of the workpiece is contacted with the surface of the grinding wheel, the driving motor is started to drive the grinding wheel to rotate, the grinding wheel polishes the surface of the workpiece, and when the workpiece is processed, the cooling assembly absorbs heat generated by friction between the grinding wheel and the workpiece, so that the possibility that the workpiece is deformed due to temperature rise is reduced, and the possibility of reducing the processing precision of the workpiece is favorably reduced.

The present invention may be further configured in a preferred embodiment as: a piston rod of the air cylinder penetrates through the workbench;

the fixture comprises a bearing plate, a fixing plate and a sliding plate, wherein a piston rod of an air cylinder penetrates through one end of the bearing plate, the fixing plate and the sliding plate are respectively arranged on the top wall of the bearing plate, the fixing plate and the sliding plate are oppositely arranged, at least one dovetail groove is formed in the top wall of the bearing plate, the dovetail grooves are arranged along the axial direction of a workpiece, a dovetail block sliding in the dovetail groove is arranged on one side, away from the fixing plate, of the sliding plate, a fastening bolt penetrates through the top wall of the dovetail block, and one end, penetrating through the dovetail block, of the fastening bolt is abutted to the bottom wall of the dovetail;

the fixed plate with it bears the post to rotate between the slide to be connected with, the axis that bears the post with the axis of the piston rod of cylinder is mutually perpendicular, bear the post with the connection can be dismantled to the fixed plate, be equipped with the fixed key that inserts the work piece keyway on the lateral wall that bears the post, the fixed key is followed the axis direction setting of bearing the post, just be equipped with the fixed slot along its axis direction on bearing the lateral wall of post, be equipped with the fixed block of two relative settings in the fixed slot, the fixed block with the side of work piece is inconsistent, wear to be equipped with fixing bolt on the roof of fixed block, fixing bolt passes the one end of fixed block with the tank bottom wall of fixed slot is contradicted.

By adopting the technical scheme, before a workpiece is prepared to be polished, the piston rod of the air cylinder contracts to drive the bearing plate to move downwards, the sliding plate is pushed to drive the bearing column to move towards one side far away from the fixed plate, the fixed block close to one side of the fixed plate is taken down, the workpiece is sleeved on the side wall of the bearing column, the fixed key is inserted into the key groove of the workpiece, the fixed block is inserted into the fixed groove, then the sliding plate is pushed, the dovetail block slides in the dovetail groove, when one end of the bearing column close to the fixed plate is inserted into the fixed plate, the fastening bolt is rotated to drive the dovetail block to move upwards, the side wall of the dovetail block is abutted against the groove wall of the dovetail groove, so that the sliding plate is fixed, the workpiece is moved, when the workpiece is in contact with the surface of the grinding wheel, the two fixed blocks are respectively abutted against two sides of the, therefore, the workpiece is fixed, the possibility of rotation of the workpiece during grinding is reduced, and the possibility of reducing the machining precision of the workpiece is reduced.

The present invention may be further configured in a preferred embodiment as: a guide hole for collecting cooling liquid is formed in the bearing plate;

the cooling assembly comprises a water tank arranged below the workbench, a water pump is arranged outside the water tank, a water pumping pipe communicated with the water tank is arranged on the end wall of a water pumping port of the water pump, a water outlet pipe is arranged on the end wall of a water outlet of the water pump, a spray nozzle is arranged at one end, away from the water pump, of the water outlet pipe, and the spray nozzle faces to the contact surface of the grinding wheel and the workpiece;

the water tank is provided with a cooling tank communicated with the water tank, the top wall of the cooling tank is provided with an exhaust fan, the top wall of the cooling tank is provided with a return pipe communicated with the guide hole, the top wall of the cooling tank is provided with a plurality of ventilation holes, and the ventilation holes and the exhaust fan are respectively positioned on two sides of the return pipe.

By adopting the technical scheme, when the grinding wheel polishes the workpiece, the water pump is started, the cooling liquid is pumped into the water pumping pipe from the water tank, and enters the water outlet pipe through the water pump and is sprayed to the grinding wheel and the surface of the workpiece through the spray nozzle, so that the heat generated by the friction between the workpiece and the surface of the grinding wheel is absorbed and flows on the top wall of the bearing plate, the cooling liquid flows into the return pipe through the guide hole of the bearing plate and then flows into the cooling tank through the return pipe, the hot gas generated by the cooling liquid rises to the top of the cooling tank, the exhaust fan exhausts the hot gas in the cooling tank, so that negative pressure is formed in the cooling tank, the cold air is pressed into the cooling tank through the ventilation hole under atmospheric pressure, the heat of the cooling liquid is transferred to the cold air, the cold air is converted into hot air and then is pumped out by the exhaust fan to circulate, so that the temperature, the temperature of the cooling liquid flowing into the water tank is reduced, and the possibility that the cooling liquid continuously absorbs heat generated by workpiece processing is improved.

The present invention may be further configured in a preferred embodiment as: the top wall of the bearing plate is provided with a flow guide inclined plane, and the distance between the flow guide inclined plane and the bottom wall of the bearing plate is gradually increased from one side close to the guide hole to one side far away from the guide hole.

Through adopting above-mentioned technical scheme, the coolant liquid falls on the roof of loading board, gathers in the lower one side on water conservancy diversion inclined plane to make things convenient for the coolant liquid to flow in the guiding hole smoothly.

The present invention may be further configured in a preferred embodiment as: the cooling box is internally provided with at least one first guide plate and at least one second guide plate, the first guide plate and the second guide plate are arranged in a staggered mode, an S-shaped channel for cooling liquid to pass through is formed between the first guide plate and the second guide plate, and the first guide plate and the second guide plate are located below one end, communicated with the cooling box, of the return pipe.

Through adopting above-mentioned technical scheme, the coolant liquid absorbs on the heat back flows to the loading board roof, through guiding hole inflow back flow, flows into the cooling box again in, falls on the roof of first guide plate, flows to the diapire of cooling box through the S-shaped passageway to this increases the time that the coolant liquid is detained in the cooling box, thereby the coolant liquid is to the more heat of cold air transmission, is favorable to improving the radiating effect of coolant liquid in the cooling box.

The present invention may be further configured in a preferred embodiment as: the top wall of the water tank is provided with a flow guide hole communicated with the cooling tank;

the water tank is internally provided with a filter layer which is arranged along the height direction of the water tank, and one end of the water pumping pipe, which is connected with the water tank, and the diversion holes are respectively positioned at two sides of the filter layer.

Through adopting above-mentioned technical scheme, the work piece waste material that the filter layer carried in with the coolant liquid is detained, reduces the possibility that work piece waste material blockked up the water pump.

The present invention may be further configured in a preferred embodiment as: and a protective cover for covering a grinding wheel is arranged on the side wall of the transmission shaft, and one end of the water outlet pipe, which is far away from the water pump, is inserted into the protective cover.

Through adopting above-mentioned technical scheme, the shower nozzle is with the coolant liquid blowout, because the emery wheel is in the rotating condition, the coolant liquid splashes very easily and leaves the workstation, and the movable space of protection casing restriction coolant liquid to reduce the coolant liquid and leave the possibility of workstation.

The present invention may be further configured in a preferred embodiment as: and a limiting plate is annularly arranged on the top wall of the bearing plate.

Through adopting above-mentioned technical scheme, the limiting plate restricts the home range of coolant liquid on the loading board, reduces the coolant liquid and leaves the possibility of workstation.

To sum up, the utility model discloses a following at least one useful technological effect:

1. when a workpiece is to be machined, a piston rod of the air cylinder is contracted to drive the clamp to move downwards, the workpiece is clamped on the clamp, the piston rod of the air cylinder extends out to drive the clamp to move upwards, so that the clamped workpiece is lifted, after the surface of the workpiece is contacted with the surface of the grinding wheel, the driving motor is started to drive the grinding wheel to rotate, the surface of the workpiece is ground, meanwhile, the cooling assembly continuously absorbs heat generated by friction between the grinding wheel and the surface of the workpiece, the temperature of the contact surface of the grinding wheel and the workpiece is reduced, the possibility of deformation of the workpiece and the grinding wheel due to temperature rise is reduced, and the possibility of reducing the machining;

2. the cooling liquid falls on the top wall of the bearing plate, is accumulated on the lower side of the flow guide inclined plane and then flows into the guide hole, so that the cooling liquid can conveniently flow into the guide hole;

3. the filter layer is used for retaining the workpiece scraps carried in the cooling liquid, so that the possibility that the workpiece scraps block the water pump is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is an enlarged view of a portion a in fig. 1.

FIG. 3 is a schematic structural diagram of the grinding wheel, the cylinder, the bearing plate and the driving motor in the embodiment.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a partial structure view of fig. 1, in section from C-C.

Fig. 6 is a sectional view taken along line D-D in fig. 1.

FIG. 7 is a schematic structural diagram of a cooling box, a shield, a rotating motor and a support table in the embodiment.

In the figure, 1, a workbench; 11. a cylinder; 12. a support table; 13. a drive motor; 14. a drive shaft; 141. a protective cover; 15. a grinding wheel; 2. a clamp; 21. a carrier plate; 211. a diversion bevel; 212. a guide hole; 213. a limiting plate; 22. a fixing plate; 221. connecting holes; 222. a limiting groove; 23. a dovetail groove; 24. a slide plate; 241. a dovetail block; 242. fastening a bolt; 25. a fixed seat; 251. a protective cover; 26. rotating the motor; 27. a rotating shaft; 28. a load bearing column; 281. a fixed key; 282. fixing grooves; 283. a fixed block; 284. fixing the bolt; 3. a cooling assembly; 31. a water tank; 311. a filter layer; 32. a water pump; 33. a water pumping pipe; 34. a water outlet pipe; 35. a spray head; 36. a return pipe; 37. a cooling tank; 371. an exhaust fan; 372; a ventilation hole; 373. a first baffle; 374. a flow guide hole; 375. an S-shaped channel; 376. a second baffle; 4. and (5) a workpiece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the high-precision grinding machine for machining gears disclosed by the utility model comprises a workbench 1, wherein a clamp 2 for clamping a workpiece 4 is arranged on the top wall of the workbench 1, and a cylinder 11 for driving the clamp 2 to move is arranged below the workbench 1; the jig 2 includes a bearing plate 21 provided on a piston rod of the cylinder 11, and a fixing plate 22 is provided on a top wall of the bearing plate 21 and along a height direction thereof.

Referring to fig. 2, at least one dovetail groove 23 is formed in the top wall of the bearing plate 21, preferably two dovetail grooves 23 are formed in the top wall of the bearing plate 21, the two dovetail grooves 23 are arranged in parallel, the dovetail grooves 23 are arranged along the axis direction of the workpiece 4, a sliding plate 24 is connected to the top wall of the bearing plate 21 in a sliding manner, the sliding plate 24 is arranged opposite to the fixing plate 22, a dovetail block 241 sliding in the dovetail groove 23 is arranged on the side face, away from the fixing plate 22, of the sliding plate 24, a fastening bolt 242 penetrates through the top wall of the dovetail block 241, and one end, penetrating through the dovetail.

Referring to fig. 2, a fixing seat 25 is disposed on a side of the sliding plate 24 away from the fixing plate 22, a rotating motor 26 is disposed on the fixing seat 25, a rotating shaft 27 is disposed on an end wall of a motor shaft of the rotating motor 26, an axis of the rotating shaft 27 is perpendicular to an axis of a piston rod of the air cylinder 11, a bearing column 28 is disposed on an end of the rotating shaft 27 away from the rotating motor 26, an end of the bearing column 28 away from the rotating shaft 27 passes through the sliding plate 24, the bearing column 28 passes through the sliding plate 24 and is detachably connected to the fixing plate 22, the bearing column 28 is rotatably connected to the sliding plate 24 and the fixing plate 22, a connecting hole 221 for inserting the bearing column 28 is disposed on a side of the fixing plate 22, a limiting groove 222 is disposed on a side wall of the connecting hole 221, a fixing groove 282 and a fixing key 281 for inserting a key groove of the workpiece 4 are disposed on a side wall of, the fixed block 283 is abutted against the side surface of the workpiece 4, a fixed bolt 284 is arranged on the top wall of the fixed block 283 in a penetrating manner, and one end of the fixed bolt 284 penetrating through the fixed block 283 is abutted against the bottom wall of the fixed groove 282.

Referring to fig. 3 and 4, a supporting table 12 is disposed on the top wall of the working table 1, a driving motor 13 is disposed on the top wall of the supporting table 12, a driving shaft 14 is disposed on the end wall of a motor shaft of the driving motor 13 and along the axial direction of the bearing column 28, a grinding wheel 15 for processing the surface of the workpiece 4 is disposed at one end of the driving shaft 14 away from the driving motor 13, and the grinding wheel 15 is located above the bearing column 28.

Referring to fig. 2 and 3, a cooling unit 3 for continuously absorbing heat generated by friction between the surface of the workpiece 4 and the surface of the grinding wheel 15 is provided under the table 1; when the workpiece 4 is machined, firstly, a piston rod of the air cylinder 11 is contracted to drive the bearing plate 21 to move downwards, the fastening bolt 242 is rotated, the sliding plate 24 is moved, the bearing column 28 is separated from the fixing plate 22, the fixing block 283 close to the fixing plate 22 is taken down, the workpiece 4 is sleeved on the side wall of the bearing column 28, the fixing key 281 is inserted into the key slot 41, the fixing block 283 is inserted into the fixing groove 282, the sliding plate 24 is pushed, the bearing column 28 is inserted into the connecting hole 221, the fixing key 281 is inserted into the limiting groove 222, the dovetail block 241 slides in the dovetail groove 23, the fastening bolt 242 is rotated, the dovetail block 241 is fixed, and the sliding; and then, the two fixing blocks 283 are slid, the two fixing blocks 283 are respectively abutted against the two side surfaces of the workpiece 4, and the fixing bolt 284 is rotated to fix the workpiece 4, so that the workpiece 4 is clamped.

Referring to fig. 2 and 3, the piston rod of the cylinder 11 extends out to jack up the bearing plate 21, the surface of the workpiece 4 abuts against the surface of the grinding wheel 15, the driving motor 13 is started to drive the transmission shaft 14 to rotate, the transmission shaft 14 drives the grinding wheel 15 to rotate, thereby grinding the surface of the workpiece 4, absorbing the heat generated by the friction between the grinding wheel 15 and the surface of the workpiece 4 through the cooling assembly 3, reducing the possibility of local deformation of the workpiece 4 caused by the surface temperature rise in the machining process of the workpiece 4, being beneficial to reducing the possibility of reduction of the machining precision of the workpiece 4, after finishing polishing one surface of the workpiece 4, the rotating motor 26 is started to drive the rotating shaft 27 to rotate, the transmission shaft 27 drives the bearing post 28 to rotate, the fixing member 281 drives the workpiece 4 to rotate, thereby bringing the unpolished surface of the workpiece 4 into contact with the grinding wheel 15, thereby facilitating the grinding wheel 15 to completely grind the surface of the workpiece 4.

Referring to fig. 3 and 4, the cooling assembly 3 includes a water tank 31 disposed under the worktable 1, a water pump 32 is disposed outside the water tank 31, a water pumping pipe 33 is disposed on an end wall of a water pumping port of the water pump 32, one end of the water pumping pipe 33 far away from the water pump 32 is communicated with the water tank 31, a water outlet of the water pump 32 is provided with a water outlet pipe 34, one end of the water outlet pipe 34 far away from the water pump 32 is provided with a spray head 35, and the spray head 35 is disposed toward a position where the surface of the grinding wheel.

Referring to fig. 5 and 6, a guide hole 212 for collecting cooling liquid is formed in the top wall of the bearing plate 21, a return pipe 36 is inserted into the guide hole 212, a cooling tank 37 is formed in the top wall of the water tank 31, one end, away from the bearing plate 21, of the return pipe 36 is connected with the top wall of the cooling tank 37, an exhaust fan 371 and an air exchange hole 372 are formed in the top wall of the cooling tank 37, and a flow guide hole 374 communicated with the water tank 31 is formed in the bottom wall of the cooling tank 37; the top wall of the bearing plate 21 is provided with a diversion inclined surface 211, and the distance between the diversion inclined surface 211 and the bottom wall of the bearing plate 21 is gradually increased from one side close to the guide hole 212 to one side far away from the guide hole 212.

Referring to fig. 5 and 6, at least one first flow guide plate 373 and at least one second flow guide plate 376 are arranged in the cooling tank 37, the number of the first flow guide plates 373 and the number of the second flow guide plates 376 are preferably two, the two first flow guide plates 373 and the two second flow guide plates 376 are uniformly distributed along the height direction of the cooling tank 37, the first flow guide plates 373 and the second flow guide plates 376 are both positioned below the end of the return pipe 36 communicated with the cooling tank 37, the first flow guide plates 373 and the second flow guide plates 376 are arranged in a staggered manner, and an S-shaped channel 375 for cooling liquid to flow through is formed between the first flow guide plates 373 and the second flow guide plates 376; when the grinding wheel 15 grinds the workpiece 4, the water pump 32 (see fig. 7) is started, and the coolant in the water tank 31 is pumped into the water pumping pipe 33 (see fig. 7) and flows into the water outlet pipe 34 through the water outlet of the water pump 32.

Referring to fig. 4, the heat generated by the grinding wheel 15 during grinding of the workpiece 4 is absorbed by the nozzle 35 and is sprayed to the surfaces of the grinding wheel 15 and the workpiece 4, so that the possibility of the temperature increase of the surfaces of the grinding wheel 15 and the workpiece 4 is reduced.

Referring to fig. 5 and 6, the cooling liquid falls on the bearing plate 21, the flow guiding inclined surface 211 on the bearing plate 21 facilitates the cooling liquid to accumulate on the lower side of the flow guiding inclined surface 211, the cooling liquid conveniently flows into the guiding hole 212 and then flows into the return pipe 36, the cooling liquid flows into the cooling box 37 through the return pipe 36, the cooling liquid falls on the top wall of the first flow guiding plate 373 and falls on the bottom wall of the cooling box 37 through the S-shaped channel 375, the cold air enters the cooling box 37 through the ventilation hole 372, the heat carried by the cooling liquid is transferred into the cold air, the temperature of the cold air is raised to be changed into hot air, and the hot air in the cooling box 37 is pumped out by the exhaust fan 371, so that the temperature of the cooling liquid; flow into water tank 31 through water conservancy diversion hole 374 again, S-shaped passageway 375 increases the time that the coolant liquid is detained in cooling tank 37, thereby the coolant liquid is to more heat of cold air transmission, improve the cooling effect of coolant liquid, be favorable to reducing the temperature of the coolant liquid that gets into water tank 31 through water conservancy diversion hole 374, thereby improve and continue the possibility to emery wheel 15 and the surperficial cooling of work piece 4, reduce emery wheel 15 and the rise of work piece 4 surface temperature and produce the possibility of deformation, be favorable to reducing the possibility that the machining precision of work piece 4 reduces.

Referring to fig. 5, a position limiting plate 213 is annularly arranged on the top wall of the bearing plate 21; after the coolant is sprayed toward the grinding wheel 15 and falls on the top wall of the carrier plate 21, the limit plate 213 limits the moving range of the coolant, reducing the possibility that the coolant leaves the table 1.

Referring to fig. 6, a filter layer 311 is disposed in the water tank 31 along the height direction of the water tank 31, and the diversion hole 374 and one end of the water pumping pipe 33 communicated with the water tank 31 are respectively located at two sides of the filter layer 311; after the coolant in the cooling tank 37 enters the water tank, the filter layer 311 retains the scraps of the workpiece 4 carried in the coolant, and reduces the possibility that the scraps of the workpiece 4 block the water pump 32.

Referring to fig. 5 and 6, a protective cover 141 for covering the grinding wheel 15 is arranged on the side wall of the transmission shaft 14, and one end of the water outlet pipe 34 far away from the water pump 32 is inserted into the protective cover 141; when the workpiece 4 is machined, the grinding wheel 15 is in a rotating state, the sprayed cooling liquid splashes under the driving of the grinding wheel 15 after encountering the grinding wheel 15, and the protective cover 141 limits the moving space of the cooling liquid, so that the possibility that the cooling liquid leaves the workbench 1 is favorably reduced.

The implementation principle of the embodiment is as follows: before polishing work piece 4, thereby the piston rod shrink of cylinder 11 drives anchor clamps 2, with work piece 4 clamping on anchor clamps 2, the piston rod of first cylinder 11 stretches out, drive anchor clamps 2 and shift up, after work piece 4 surface and emery wheel 15 surface contacted, thereby start driving motor 13 and drive emery wheel 15 and rotate, begin to polish work piece 4 surface, cooling module 3 absorbs the heat that emery wheel 15 and work piece 4 friction produced simultaneously, reduce the temperature on emery wheel 15 and work piece 4 contact surface, cooling module 3 continuously absorbs the heat that work piece 4 and emery wheel 15 friction produced, reduce the possibility that work piece 4 surface takes place the deformation because of the temperature risees, be favorable to reducing the possibility that the machining precision of work piece 4 reduces.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a processing high accuracy grinding machine for gear which characterized in that: the clamp comprises a workbench (1), a clamp (2) arranged on the workbench (1) and used for clamping a workpiece (4), and a cooling assembly (3) arranged below the workbench (1) and used for absorbing heat generated by processing the workpiece (4), wherein an air cylinder (11) used for driving the clamp (2) to move is arranged below the workbench (1), and the air cylinder (11) is arranged along the height direction of the workbench (1);

the grinding machine is characterized in that a driving motor (13) is arranged on the top wall of the workbench (1), a transmission shaft (14) is arranged on the end wall of a motor shaft of the driving motor (13), a grinding wheel (15) is arranged at one end, far away from the driving motor (13), of the transmission shaft (14), and the peripheral wall of the grinding wheel (15) is in contact with the peripheral wall of the workpiece (4).

2. The high-precision grinding machine for machining gears according to claim 1, characterized in that: a piston rod of the air cylinder (11) penetrates through the workbench (1);

the fixture (2) comprises a bearing plate (21) arranged at one end of a cylinder (11) and a fixing plate (22) and a sliding plate (24) which are arranged on the top wall of the bearing plate (21) respectively, wherein a piston rod of the cylinder (11) penetrates through the bearing plate (21), the fixing plate (22) and the sliding plate (24) are arranged oppositely, at least one dovetail groove (23) is formed in the top wall of the bearing plate (21), the dovetail groove (23) is arranged along the axis direction of the workpiece (4), a dovetail block (241) sliding in the dovetail groove (23) is arranged on one side, far away from the fixing plate (22), of the sliding plate (24), a fastening bolt (242) penetrates through the top wall of the dovetail block (241), and one end, penetrating through the dovetail block (241), of the fastening bolt (242) is abutted to the bottom wall of the dovetail groove (23);

a bearing column (28) is rotatably connected between the fixed plate (22) and the sliding plate (24), the axis of the bearing column (28) is vertical to the axis of the piston rod of the air cylinder (11), the bearing column (28) is detachably connected with the fixing plate (22), a fixing key (281) inserted into a key groove of the workpiece (4) is arranged on the side wall of the bearing column (28), the fixed key (281) is arranged along the axial direction of the bearing column (28), the side wall of the bearing column (28) is provided with a fixing groove (282) along the axial direction, two fixing blocks (283) which are oppositely arranged are arranged in the fixing groove (282), the fixed block (283) is abutted against the side surface of the workpiece (4), a fixed bolt (284) is arranged on the top wall of the fixed block (283) in a penetrating way, one end of the fixing bolt (284) penetrating through the fixing block (283) is abutted against the bottom wall of the fixing groove (282).

3. The high-precision grinding machine for machining gears according to claim 2, characterized in that: a guide hole (212) for collecting cooling liquid is formed in the bearing plate (21);

the cooling assembly (3) comprises a water tank (31) arranged below the workbench (1), a water pump (32) is arranged outside the water tank (31), a water pumping pipe (33) communicated with the water tank (31) is arranged on the end wall of a water pumping opening of the water pump (32), a water outlet pipe (34) is arranged on the end wall of a water outlet of the water pump (32), a spray head (35) is arranged at one end, far away from the water pump (32), of the water outlet pipe (34), and the spray head (35) faces to the contact surface of the grinding wheel (15) and the workpiece (4);

be equipped with on water tank (31) cooling tank (37) that are linked together with water tank (31), be equipped with air exhauster (371) on the roof of cooling tank (37), be equipped with back flow (36) that are linked together with guiding hole (212) on the roof of cooling tank (37), be equipped with a plurality of scavenge hole (372) on the roof of cooling tank (37), scavenge hole (372) with air exhauster (371) are located respectively the both sides of back flow (36).

4. The high-precision grinding machine for machining gears according to claim 3, characterized in that: the top wall of the bearing plate (21) is provided with a flow guide inclined surface (211), and the distance between the flow guide inclined surface (211) and the bottom wall of the bearing plate (21) is gradually increased from one side close to the guide hole (212) to one side far away from the guide hole (212).

5. The high-precision grinding machine for machining gears according to claim 3, characterized in that: at least one first guide plate (373) and at least one second guide plate (376) are arranged in the cooling tank (37), the first guide plates (373) and the second guide plates (376) are arranged in a staggered mode, an S-shaped channel (375) for cooling liquid to pass through is formed between the first guide plates (373) and the second guide plates (376), and the first guide plates (373) and the second guide plates (376) are located below one end, communicated with the cooling tank (37), of the return pipe (36).

6. The high-precision grinding machine for machining gears according to claim 3, characterized in that: a flow guide hole (374) communicated with the cooling box (37) is formed in the top wall of the water tank (31);

be equipped with filter layer (311) in water tank (31), filter layer (311) are followed the direction of height setting of water tank (31), drinking-water pipe (33) with the one end that water tank (31) are connected with water conservancy diversion hole (374) are located the both sides of filter layer (311) respectively.

7. The high-precision grinding machine for machining gears according to claim 3, characterized in that: and a protective cover (141) for covering the grinding wheel (15) is arranged on the side wall of the transmission shaft (14), and one end, far away from the water pump (32), of the water outlet pipe (34) is inserted into the protective cover (141).

8. The high-precision grinding machine for machining gears according to claim 3, characterized in that: and a limiting plate (213) is annularly arranged on the top wall of the bearing plate (21).

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