Workpiece grinding device and method

Abstract

The present invention relates to the technical field of workpiece grinding, specifically to a workpiece grinding device and method, the device comprising a grinding mechanism, a cooling mechanism and a recovery mechanism, the grinding device comprising a housing, a clamping assembly, a center column, a screw, a telescopic component, a sanding belt a, a sanding belt b and an annular airbag; the center column is rotatably arranged inside the housing; the screw is arranged on the center column; the clamping assembly is sleeved on the center column; an air cavity is opened inside the side wall of the housing; the annular airbag is arranged on the inner wall of the housing and communicates with the air cavity; the sanding belt a is detachably connected to the annular airbag; the telescopic component is arranged inside the housing and connected to the clamping assembly; the cooling mechanism is arranged on the housing; and the recovery mechanism is arranged at the bottom of the housing. The present invention can simultaneously grind all tooth grooves on multiple gears to be ground, significantly improving the grinding efficiency of the gears and automatically recovering debris, while also having a cooling effect on the grinding area.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece grinding, and in particular to a workpiece grinding device and method. Background Art

[0002] Gears are a type of workpiece and need to be processed through processes such as cutting, forging, casting and grinding.

[0003] A Chinese patent with announcement number CN113275667B discloses a gear grinding device. After the gear to be processed is installed, the corresponding telescopic device is adjusted so that the sanding belt contacts a tooth groove of the gear to be processed; then the first driving device is started to drive the pulley to rotate, so that the sanding belt rubs the corresponding tooth groove of the gear to be processed; thereafter, the corresponding telescopic device is adjusted to shrink at the same time, and the second driving device is started at the same time so that the tooth groove adjacent to the ground tooth groove corresponds to the sanding belt, the second driving device is stopped, and the corresponding telescopic device is adjusted again and stretched at the same time so that the sanding belt contacts the tooth groove adjacent to the ground tooth groove, and the above steps are repeated to achieve the function of grinding all the tooth grooves of the gear.

[0004] However, the above-mentioned prior art has the following defects: the above-mentioned prior art only changes the point contact between the traditional grinding wheel and the tooth groove into the surface contact between the grinding belt and the tooth groove. This method only improves the grinding efficiency of a single tooth groove, but still requires the tooth grooves on the gear to be ground one by one. For the entire gear, the overall grinding efficiency is not improved enough. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the background technology and to provide a workpiece grinding device and method.

[0006] The technical solution of the present invention is a workpiece grinding device, comprising:

[0007] The grinding mechanism includes a box, a clamping assembly, a center column, a screw, a telescopic component, a sanding belt a, a sanding belt b and an annular airbag; the center column is rotatably arranged inside the box for placing the gear to be ground; the screw is arranged on the center column; the clamping assembly is sleeved on the center column and cooperates with the screw to clamp the gear to be ground; an air cavity is opened inside the side wall of the box, and an air pressure sensor is provided in the air cavity; the annular airbag is arranged on the inner wall of the box and communicates with the air cavity; the sanding belt a is detachably connected to the annular airbag; the center column is adapted to the inner hole of the gear to be ground, and the surface of the center column is provided with an elastic layer; the sanding belt b is detachably connected to the surface of the elastic layer; the telescopic component is arranged inside the box and connected to the clamping assembly;

[0008] The cooling mechanism is provided on the box body and is used to deliver cold air to the inside of the annular airbag to reduce the temperature of the gear during grinding;

[0009] The recovery mechanism is arranged at the bottom of the box body and is connected to the box body, and is used for recovering the debris generated during the grinding process.

[0010] Preferably, a pressure relief valve communicating with the air cavity is provided on the inner wall of the box body, and a box cover is detachably connected to the box body.

[0011] Preferably, the clamping assembly includes an upper ring plate, a lower ring plate, a drive cover, a pressure ring and a spring; the upper ring plate and the lower ring plate are sleeved on the center column; the drive cover is threadedly connected to the screw, and the side wall of the drive cover is provided with a telescopic groove, and the pressure ring is slidably arranged on the inner side of the telescopic groove and is connected to the inner wall of the telescopic groove through a spring.

[0012] Preferably, an upper baffle is provided on the upper ring plate; a lower baffle is provided on the lower ring plate; and a plurality of handle rods are distributed on the circumference of the drive cover.

[0013] Preferably, the top of the telescopic component is connected with an adapter ring a, and the adapter ring a is rotatably connected to the lower ring plate; and a load-bearing column is provided at the bottom of the box body.

[0014] Preferably, the inner wall of the lower baffle is provided with a gear ring, the bottom end of the adapter ring a is connected to the adapter ring b, a driving gear that engages with the gear ring is rotatably provided on the adapter ring b, and a sliding hole is provided at the center of the driving gear; a motor is provided at the bottom of the box, and the output end of the motor is connected to a guide shaft that is slidably connected to the sliding hole.

[0015] Preferably, the cooling mechanism includes an annular water tank, an air pump and a spiral tube; the annular water tank is arranged on the box body; the spiral tube is arranged on the inner side of the annular water tank and one end of the spiral tube is connected to the air cavity; the air pump is arranged on the annular water tank and connected to the spiral tube.

[0016] Preferably, a mesh plate is provided at the bottom of the box; the recycling mechanism includes a shell, a drawer and a magnetic part; the shell is provided at the bottom of the box, and a drawer is provided slidingly inside the shell; the magnetic part is provided at the bottom of the shell; an exhaust pipe is provided on the shell; and an exhaust hole aligned with the exhaust pipe is opened on the drawer.

[0017] The present invention also provides a workpiece grinding method, which uses the above-mentioned grinding device and includes the following steps:

[0018] S1. Preparation: Pass the center column through the inner hole of the gear to be ground so that the gear to be ground is stacked on the lower ring plate. Then, put the upper ring plate on the center column and press it on the gear to be ground. Finally, connect the drive cover with the screw thread to apply pressure to the upper ring plate to clamp and fix the gear to be ground.

[0019] S2. Grinding operation: The air pump in the cooling mechanism delivers a cold air flow into the annular airbag to expand the annular airbag. The annular airbag expands and squeezes the abrasive belt a to the inner side of the gear tooth groove to be ground. Then, the telescopic component drives the upper ring plate, the lower ring plate and the gear to be ground up and down, causing the tooth groove and the abrasive belt a to rub against each other, thereby achieving the grinding function of the tooth groove;

[0020] S3. Chip recovery: After the grinding of the gear to be ground is completed, the pressure relief valve is opened to allow the gas in the air cavity and the inner side of the annular airbag to be ejected to blow away the chips generated by the grinding. Under the action of the air flow, the chips are allowed to flow into the drawer with the air flow and are magnetically attracted to the inside of the drawer by the action of the magnetic part. The air flow is discharged through the exhaust pipe.

[0021] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0022] By providing a grinding mechanism, all tooth grooves on multiple gears to be ground can be ground synchronously at the same time, without the need to grind the tooth grooves one by one, which significantly improves the grinding efficiency of the gears. In addition, the gear grinding operation is carried out inside the box, which not only avoids the flying of debris but also reduces the noise generated during the grinding process.

[0023] By providing a cooling mechanism, air can be pumped into the air cavity, so that the annular air bag can expand and squeeze the sanding belt a to the inside of the tooth groove. At the same time, during the grinding process, the cold air can cool the tooth groove grinding area.

[0024] By setting up a recovery mechanism, the gas ejected from the air cavity can be used to blow away the debris generated during the grinding process and blow it through the mesh plate into the inside of the drawer. Under the magnetic attraction of the magnetic part, the debris is adsorbed inside the drawer, realizing the automatic cleaning and recovery function of the debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of an embodiment of the present invention;

[0026] Figure 2 This is a structural diagram of a box body in a cross-section state in an embodiment of the present invention;

[0027] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0028] Figure 4 This is a structural diagram of one embodiment of the present invention, in which the clamping components are separated from each other in a cross-section state of the box;

[0029] Figure 5 This is a schematic cross-sectional view of a driving cover and a pressure ring in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the connection structure of the drive cover and the adapter ring a with the telescopic component in a cross-sectional state in one embodiment of the present invention;

[0031] Figure 7 for Figure 6The enlarged structural diagram at B in the middle;

[0032] Figure 8 This is a schematic structural diagram of an embodiment of the present invention when the driving gear is separated from the guide shaft;

[0033] Figure 9 This is a structural diagram of the recovery mechanisms when they are separated from each other in a cross-section state of the box body in one embodiment of the present invention;

[0034] Figure 10 This is a schematic structural diagram of a cooling mechanism in a cross-section of an annular water tank in an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the planar structure of an embodiment of the present invention when the annular airbag expands and squeezes the sanding belt a.

[0036] Figure numerals: 1. Box body; 101. Air cavity; 2. Box cover; 3. Shell; 4. Annular water tank; 5. Air pump; 6. Drawer; 7. Drive cover; 8. Spring; 9. Upper ring plate; 10. Upper baffle; 11. Lower ring plate; 12. Lower baffle; 13. Exhaust pipe; 14. Screw; 15. Pressure relief valve; 16. Annular airbag; 17. Sanding belt a; 18. Adapter ring b; 19. Motor; 20. Sanding belt b; 21. Pressure ring; 22. Guide shaft; 23. Drive gear; 24. Mesh plate; 25. Telescopic component; 26. Gear ring; 27. Spiral tube; 28. Adapter ring a; 29. Magnetic part; 30. Center column; 31. Load-bearing column. DETAILED DESCRIPTION

[0037] Example 1, as Figure 1-4 As shown, a workpiece grinding device proposed by the present invention includes a grinding mechanism, a cooling mechanism and a recovery mechanism;

[0038] The grinding mechanism includes a box body 1, a clamping assembly, a center column 30, a screw 14, a telescopic component 25, a sanding belt a17, a sanding belt b20 and an annular airbag 16; the center column 30 is rotatably arranged inside the box body 1 for placing the gear to be ground; the screw 14 is arranged on the center column 30; the clamping assembly is sleeved on the center column 30 and cooperates with the screw 14 to clamp the gear to be ground; an air cavity 101 is opened inside the side wall of the box body 1, and an air pressure sensor is arranged in the air cavity 101, which is used to sense the pressure inside the air cavity 101 The air pressure is large and small, which is convenient for controlling the expansion degree of the annular airbag 16, and further for controlling the squeezing force between the abrasive belt a17 and the tooth groove; the annular airbag 16 is arranged on the inner wall of the box body 1 and is connected to the air cavity 101; the abrasive belt a17 is detachably connected to the annular airbag 16, and the detachable connection includes but is not limited to adhesive bonding and other methods; (the abrasive belt is a grinding tool commonly used for surface treatment, polishing or deburring, especially in gear chamfering, deburring and edge finishing. The abrasive belt is adaptable to complex shapes and can fit the gear tooth profile, curved surface, etc. Complex shape, achieving uniform grinding is a known technology); the center column 30 is adapted to the inner hole of the gear to be ground (when the center column 30 passes through the inner hole of the gear to be ground, due to the specific shape of the inner hole, all the gears to be ground can only be placed in the same state, so that the tooth grooves of each gear to be ground are aligned, so that the sanding belt a17 can fully contact the tooth grooves of each gear to be ground), and an elastic layer is provided on the surface of the center column 30; the sanding belt b20 is detachably connected to the surface of the elastic layer. When the center column 30 passes through the inner hole on the gear to be ground (the hole at the center of the gear for installing the gear), the inner hole will squeeze the sanding belt b20 and the elastic layer. Under the action of the elastic force of the elastic layer, there is an extrusion force between the sanding belt b20 and the inner hole. When the gear to be ground moves up and down, the sanding belt b20 can grind the inner hole. The elastic layer includes but is not limited to an elastic cotton layer and other elastic structures; the telescopic component 25 is arranged inside the box body 1 and is connected to the clamping assembly. The telescopic component 25 includes but is not limited to a cylinder and other devices that can drive the gear to be ground up and down.

[0039] The inner wall of the box body 1 is provided with a pressure relief valve 15 connected to the air cavity 101, and the box body 1 is detachably connected with a box cover 2, which can seal the top of the box body 1, so that the gear grinding operation is in a relatively closed environment, avoiding the splashing of debris generated by grinding, and at the same time reducing the noise generated during the grinding process; the pressure relief valve 15 can discharge the gas inside the air cavity 101 and the annular airbag 16, realizing the deflation function of the annular airbag 16; the top of the telescopic component 25 is connected with an adapter ring a28, which is connected to the adapter ring a28. The adapter ring a28 is rotatably connected to the lower ring plate 11, and a load-bearing column 31 is provided at the bottom of the box body 1 (the load-bearing column 31 is only in contact with the adapter ring a28 but not connected). The load-bearing column 31 is used to support the grinding gear and the clamping assembly to prevent the telescopic component 25 from directly bearing the weight; an annular groove is provided at the bottom end of the lower ring plate 11, and the adapter ring a28 is rotatably connected to the annular groove. A plurality of rolling grooves are provided on the top circumference of the adapter ring, and balls are provided in the rolling grooves to reduce the friction between the adapter ring and the annular groove (refer to Figure 6 ).

[0040] An upper baffle 10 is provided on the upper ring plate 9; a lower baffle 12 is provided on the lower ring plate 11; a plurality of handle bars are distributed on the circumference of the drive cover 7; the upper baffle 10 and the lower baffle 12 are aligned with the root of the teeth of the gear to be ground, and the upper baffle 10 and the lower baffle 12 can prevent the part of the annular airbag 16 that is not aligned with the gear to be ground from excessively expanding and affecting the up and down movement of the gear to be ground (refer to Figure 11 ).

[0041] The cooling mechanism is provided on the box body 1 and is used to deliver cold air to the inside of the annular airbag 16 to reduce the temperature of the gear during grinding;

[0042] The recovery mechanism is arranged at the bottom of the box body 1 and is in communication with the box body 1 , and is used to recover the debris generated during the grinding process.

[0043] In this embodiment, a cooling mechanism is used to deliver cold air into the air cavity 101, thereby expanding the annular airbag 16. The expansion of the annular airbag 16 will squeeze the sanding belt a17 from all directions on all sides, so that the sanding belt a17 is squeezed to the inner side of each tooth groove of the gear to be ground. Then, the telescopic component 25 is used to drive the lower ring plate 11, the gear to be ground and the upper ring plate 9 to move up and down, so that the sanding belt a17 can simultaneously realize the grinding function of all the tooth grooves of the gear to be ground, and the inner hole of the gear to be ground is in contact with the sanding belt b20, and the grinding function of the inner hole of the gear to be ground is realized at the same time, thereby significantly improving the gear grinding efficiency.

[0044] It should be noted that a plurality of gears to be ground can be stacked and placed on the central column 30 , thereby achieving the function of grinding multiple gears simultaneously and further improving the gear grinding efficiency.

[0045] Example 2, as Figure 4-Figure 5As shown, a workpiece grinding device proposed by the present invention, compared with embodiment 1, this embodiment also introduces in detail the structure of the clamping assembly; the clamping assembly includes an upper ring plate 9, a lower ring plate 11, a drive cover 7, a pressure ring 21 and a spring 8; the upper ring plate 9 and the lower ring plate 11 are sleeved on the center column 30; the drive cover 7 is threadedly connected to the screw 14, and the side wall of the drive cover 7 is provided with a telescopic groove, and the pressure ring 21 is slidably arranged on the inner side of the telescopic groove and is connected to the inner wall of the telescopic groove through the spring 8.

[0046] In this embodiment, by rotating the drive cover 7, the drive cover 7 is threadedly connected to the screw 14, so that the drive cover 7 moves downward, thereby driving the pressure ring 21 to move downward until the pressure ring 21 contacts the upper ring plate 9 and the spring 8 is in a compressed state. The elastic force of the spring 8 acts on the pressure ring 21, so that the pressure ring 21 presses down the upper ring plate 9, and the upper ring plate 9 presses down the gear to be ground and cooperates with the lower ring plate 11 to realize the clamping function of the gear to be ground.

[0047] It is worth noting that in the above process, the spring 8 is not compressed to the maximum compression amount, and the remaining compression amount of the spring 8 is greater than the maximum stroke amount of the telescopic device; the telescopic device drives the upper ring plate 9, the lower ring plate 11 and the gear to be ground to move slowly up and down, and the compression frequency of the spring 8 can adapt to the frequency of the up and down movement of the upper ring plate 9, the lower ring plate 11 and the gear to be ground, ensuring that the pressure ring 21 is always in contact with the upper ring plate 9, thereby ensuring the stability of the upper ring plate 9 and the lower ring plate 11 clamping the gear to be ground.

[0048] It is worth noting that a scale is provided on the surface of the screw rod 14 to facilitate the control of the downward movement distance of the drive cover 7 and thus the compression amount of the spring 8.

[0049] Example 3, as Figure 6-Figure 8 As shown, a workpiece grinding device proposed by the present invention, compared with the second embodiment, this embodiment also includes a lower baffle 12 having an inner wall provided with a gear ring 26, the bottom end of the adapter ring a28 is connected to the adapter ring b18, the adapter ring b18 is rotatably provided with a drive gear 23 that meshes with the gear ring 26, and a sliding hole is opened at the center of the drive gear 23; a motor 19 is provided at the bottom of the box body 1, and the output end of the motor 19 is connected to a guide shaft 22 that is slidably connected to the sliding hole.

[0050] In this embodiment, the adapter ring b18 can install the driving gear 23 on the adapter ring a28 while ensuring that the driving gear 23 can rotate normally, ensuring that the driving gear 23 and the gear ring 26 move up and down synchronously, and realizing the function that the driving gear 23 and the gear ring 26 are always engaged; the sliding hole on the driving gear 23 cooperates with the guide shaft 22, so that after the driving gear 23 moves up and down, the motor 19 can still drive the driving gear 23 to rotate through the guide shaft 22.

[0051] It should be noted that after each gear grinding operation is completed, the annular airbag 16 will be deflated through the pressure relief valve 15, and then the guide shaft 22 will be driven to rotate by the motor 19, the guide shaft 22 will drive the driving gear 23 to rotate, the driving gear 23 will drive the gear ring 26 to rotate, the gear ring 26 will drive the lower baffle 12 to rotate, and the lower baffle 12 will drive the lower ring plate 11 to rotate. Under the action of the friction between the lower ring plate 11 and the upper ring plate 9 and the gear to be ground, the lower ring plate 11 and the upper ring plate 9 drive the gear to be ground to rotate a certain angle, so that the sanding belt a17 originally corresponding to the tooth teeth becomes corresponding to the tooth grooves, ensuring that the sanding belt a17 is used evenly. Uniformity and sufficiency. In addition, the annular airbag 16 is used to squeeze the sand belt a17 to the inner side of the tooth groove for multiple times to realize the multiple grinding function of the tooth groove, thereby ensuring the comprehensiveness of the sand belt a17 grinding the tooth groove. The above grinding operation can be repeated 2-3 times (because each time the annular airbag 16 expands to squeeze the sand belt a17 to the inner side of the tooth groove, the deformation of the sand belt a17 is not completely uniform, that is, there may be a small part of the sand belt a17 that cannot contact the tooth groove. Therefore, it is necessary to use the annular airbag 16 to squeeze the sand belt a17 to the inner side of the tooth groove for multiple grinding functions of the tooth groove, ensure the comprehensiveness of the tooth groove grinding, and avoid the existence of grinding dead angles).

[0052] It is worth noting that the surfaces of the upper ring plate 9 and the lower ring plate 11 are provided with a rubber layer, which can significantly increase the friction between the upper ring plate 9 and the lower ring plate 11 and the gear to be ground.

[0053] Example 4, as Figure 10 As shown, a workpiece grinding device proposed by the present invention, compared with the third embodiment, this embodiment also introduces in detail the structure of the cooling mechanism, the cooling mechanism includes an annular water tank 4, an air pump 5 and a spiral tube 27; the annular water tank 4 is arranged on the box body 1; the spiral tube 27 is arranged on the inner side of the annular water tank 4 and one end thereof is connected to the air cavity 101; the air pump 5 is arranged on the annular water tank 4 and is connected to the spiral tube 27.

[0054] In this embodiment, the side wall of the annular water tank 4 near the spiral tube 27 is made of metal materials such as copper; cold water is stored inside the annular water tank 4. When the air pump 5 transports external air to the inside of the spiral tube 27, the air inside the spiral tube 27 exchanges heat with the cold water. Since the spiral tube 27 can extend the flow time of air inside it, it ensures that the air and cold water have enough time to exchange heat, thereby realizing the air cooling function.

[0055] The cooled air enters the air cavity 101, causing the annular airbag 16 to expand, so that the sanding belt a17 is squeezed to the inside of the tooth groove, realizing the grinding function of the tooth groove. During the grinding process, the cold air can exchange heat with the grinding area through the annular airbag 16 and the sanding belt a17, realizing the cooling function of the grinding area.

[0056] It is worth noting that an alarm light is provided on the annular water tank 4, and a temperature sensor is provided inside the annular water tank 4 for monitoring the water temperature. When the water temperature exceeds the threshold, the temperature sensor feeds back a signal to the external controller, and the external controller controls the alarm light to sound an alarm to remind the staff to replace the cold water.

[0057] The replacement method is to drain the water inside the annular water tank 4 through the drain pipe on the annular water tank 4, and then inject cold water through the water inlet pipe on the annular water tank 4.

[0058] Example 4, as Figure 9 As shown, a workpiece grinding device proposed by the present invention, compared with the third embodiment, this embodiment also introduces in detail the structure of the recovery mechanism, a mesh plate 24 is provided at the bottom of the box body 1; the recovery mechanism includes an outer shell 3, a drawer 6 and a magnetic part 29; the outer shell 3 is provided at the bottom of the box body 1, and a drawer 6 is provided slidingly inside the outer shell 3; the magnetic part 29 is provided at the bottom of the outer shell 3, and the magnetic part 29 includes but is not limited to an electromagnet and other structures that can magnetically absorb debris; an exhaust pipe 13 is provided on the outer shell 3; an exhaust hole aligned with the exhaust pipe 13 is opened on the drawer 6.

[0059] It should be noted that the gear to be ground in this patent can be magnetically attracted by the magnetic part 29.

[0060] In this embodiment, when the grinding operation is completed, the pressure relief valve 15 is opened (the pressure relief valve 15 is controlled to open and close by an external controller) to discharge the gas in the air cavity 101 and the annular air bag 16. The discharged gas will enter the drawer 6 through the mesh plate 24 at the bottom of the box body 1 (the top of the box body 1 is closed by the box cover 2 and can only be discharged through the mesh plate 24 at the bottom), and then be discharged from the exhaust hole on the drawer 6, and finally be discharged through the exhaust pipe 13. In the above process, the gas will blow the debris generated during the grinding process into the drawer 6. Under the magnetic action of the magnetic part 29, the debris will be adsorbed on the inner wall of the drawer 6. Finally, the debris can be recovered by pulling out the drawer 6.

[0061] Example 5, please refer to Figure 1-11 The present invention further provides a workpiece grinding method, which uses the grinding device described in any one of the above embodiments 1 to 4, comprising the following steps:

[0062] S1. Preparation: Pass the center column 30 through the inner hole of the gear to be ground, so that the gear to be ground is stacked on the lower ring plate 11. Then, put the upper ring plate 9 on the center column 30 and press it on the gear to be ground. Finally, thread the drive cover 7 and the screw 14 together to apply pressure to the upper ring plate 9 to clamp and fix the gear to be ground.

[0063] S2. Grinding operation: The air pump 5 in the cooling mechanism delivers a cold air flow into the annular airbag 16 to expand the annular airbag 16. The annular airbag 16 expands and squeezes the abrasive belt a17 to the inner side of the gear tooth groove to be ground. Then, the telescopic component 25 drives the upper ring plate 9, the lower ring plate 11 and the gear to be ground to move up and down, so that the tooth groove and the abrasive belt a17 rub against each other, thereby achieving the grinding function of the tooth groove;

[0064] S3. Debris recovery: After the grinding of the gear to be ground is completed, the pressure relief valve 15 is opened, so that the gas inside the air cavity 101 and the annular airbag 16 is ejected to blow away the debris generated by the grinding. Under the action of the air flow, the debris enters the drawer 6 with the air flow, is magnetically attracted to the inside of the drawer 6 under the action of the magnetic member 29, and is discharged through the exhaust pipe 13.

[0065] In summary, when the present invention is used, the gear to be ground is first placed on the center column 30 in the following manner: the center column 30 is placed so that it passes through the inner hole of the gear to be ground (the elastic layer at the top of the center column 30 is first squeezed manually to facilitate the center column 30 to pass through the inner hole of the gear. Since the shape of the inner hole is specific, all the gears to be ground can only be placed in the same state so that the tooth grooves of each gear to be ground are aligned). Then, the upper ring plate 9 is placed on the center column 30 and pressed on the gear to be ground. Finally, the drive cover 7 is aligned with the center column 30. The screw 14 is threadedly connected, and by rotating the drive cover 7, the drive cover 7 is moved downward, thereby driving the pressure ring 21 to move downward until the pressure ring 21 contacts the upper ring plate 9 and the spring 8 is in a compressed state. The elastic force of the spring 8 acts on the pressure ring 21, thereby causing the pressure ring 21 to squeeze the upper ring plate 9. The upper ring plate 9 presses down the gear to be ground and cooperates with the lower ring plate 11 to realize the clamping function of the gear to be ground (a scale is provided on the surface of the screw 14 to facilitate the control of the downward movement distance of the drive cover 7, and thus to facilitate the control of the compression amount of the spring 8).

[0066] After the gear to be ground is clamped and fixed, the box cover 2 is placed on the top of the box body 1 to seal the top of the box body 1. Then the air pump 5 is turned on to transport outside air into the spiral tube 27. The air inside the spiral tube 27 exchanges heat with the cold water. Since the spiral tube 27 can extend the flow time of the air inside it, it ensures that the air and the cold water have enough time to exchange heat, thereby realizing the cooling function of the air. The cooled air enters the air cavity 101 and then enters the annular airbag 16, causing the annular airbag 16 to expand. The expansion of the annular airbag 16 will squeeze the sanding belt a17 from all directions, so that the sanding belt a17 is squeezed to the inside of each tooth groove of the gear to be ground and contacts the tooth groove.

[0067] Then, the telescopic component 25 is controlled by an external controller to work. The telescopic component 25 will first drive the lower ring plate 11 to move upward, the lower ring plate 11 drives the gear to be ground to move upward, the gear to be ground drives the upper ring plate 9 to move upward, the upper ring plate 9 drives the pressure ring 21 to move upward, the pressure ring 21 moves upward and further compresses the spring 8, and then the telescopic component 25 drives the lower ring plate 11 to move downward, so that the gear to be ground, the upper ring plate 9 and the pressure plate move downward, and the compressed spring 8 returns to the previous compression amount, realizing the up and down movement function of the gear to be ground, and repeating the above process multiple times. The grinding belt a17 can realize the synchronous grinding function of all the tooth grooves on the gear to be ground, and the grinding belt b20 can realize the grinding function of the inner hole of the gear to be ground. There is no need to grind the tooth grooves one by one, which significantly improves the grinding efficiency of the gear. At the same time, during the grinding process, cold air can exchange heat with the grinding area through the annular airbag 16 and the grinding belt a17, realizing the cooling function of the grinding area; and since the grinding operation of the tooth groove is inside the box body 1, not only can the debris generated by the surface grinding be prevented from flying everywhere, but the noise generated by the grinding can also be reduced.

[0068] After completing a grinding operation, the pressure relief valve 15 is opened to discharge the gas inside the air cavity 101 and the annular airbag 16. The discharged gas will enter the drawer 6 through the mesh plate 24 at the bottom of the box body 1 (the top of the box body 1 is closed by the box cover 2 and can only be discharged through the mesh plate 24 at the bottom), and then be discharged from the exhaust hole on the drawer 6, and finally be discharged through the exhaust pipe 13. In the above process, the gas will blow the debris generated during the grinding process into the drawer 6. Under the magnetic effect of the magnetic part 29, the debris is adsorbed on the inner wall of the drawer 6, realizing the automatic cleaning and recycling function of the debris; then the motor 19 is turned on, the motor 19 drives the gear ring 26 to rotate, the gear ring 26 drives the lower baffle 12 to rotate, and the lower baffle 12 drives the lower ring plate 11 to rotate. Under the friction between the lower ring plate 11 and the upper ring plate 9 and the gear to be ground, the lower ring plate 11 and the upper ring plate 9 drive the gear to be ground to rotate a certain angle, so that the sanding belt originally corresponding to the tooth teeth a17 becomes corresponding to the tooth groove, ensuring the uniformity and sufficiency of the use of the sanding belt a17, and then the air pump 5 is turned on again, so that the annular airbag 16 expands again, and the sanding belt a17 is squeezed to the inside of the tooth groove again, and then the telescopic component 25 is turned on again, so that the sanding belt a17 can realize the grinding function of the tooth groove again; the above grinding operation is repeated 2-3 times, so that the annular airbag 16 squeezes the sanding belt a17 multiple times, so that the sanding belt a17 at the same place contacts the tooth groove at a different position each time, ensuring the comprehensiveness of the sanding belt a17 grinding the tooth groove (because each time the annular airbag 16 expands and squeezes the sanding belt a17 to the inside of the tooth groove, the deformation of the sanding belt a17 each time is not completely uniform, that is, there may be a small part of the sanding belt a17 that cannot fit with the tooth groove, so it is necessary to use the annular airbag 16 multiple times to squeeze the sanding belt a17 to the inside of the tooth groove, to realize the multiple grinding function of the tooth groove, to ensure the comprehensiveness of the tooth groove grinding, and to avoid the existence of grinding dead angles).

[0069] After all the above grinding operations are completed, the drawer 6 can be pulled out to recycle the debris inside it, and then the box cover 2 can be opened, the drive cover 7 can be removed, and the ground gear can be removed from the center column 30.

[0070] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A workpiece grinding device, characterized in that: include: The grinding mechanism comprises a housing (1), a clamping assembly, a central column (30), a screw (14), a telescopic component (25), a sanding belt a (17), a sanding belt b (20) and an annular airbag (16); the central column (30) is rotatably arranged inside the housing (1) for placing the gear to be ground; the screw (14) is arranged on the central column (30); the clamping assembly is sleeved on the central column (30) and cooperates with the screw (14) to clamp the gear to be ground; the inner side wall of the housing (1) is provided with a plurality of screws. An air cavity (101) is provided on the housing (1), and an air pressure sensor is provided in the air cavity (101); an annular air bag (16) is provided on the inner wall of the housing (1) and is in communication with the air cavity (101); a grinding belt a (17) is detachably connected to the annular air bag (16); a central column (30) is adapted to the inner hole of the gear to be ground, and an elastic layer is provided on the surface of the central column (30); a grinding belt b (20) is detachably connected to the surface of the elastic layer; a telescopic component (25) is provided inside the housing (1) and is connected to the clamping assembly; A cooling mechanism is provided on the housing (1) and is used to deliver cold air to the interior of the annular airbag (16) to reduce the temperature of the gear during grinding; A recovery mechanism, which is arranged at the bottom of the box (1) and is in communication with the box (1), and is used to recover debris generated during the grinding process; The clamping assembly includes an upper ring plate (9), a lower ring plate (11), a driving cover (7), a pressure ring (21) and a spring (8); the upper ring plate (9) and the lower ring plate (11) are sleeved on the central column (30); the driving cover (7) is threadedly connected to the screw (14), and a telescopic groove is provided on the side wall of the driving cover (7); the pressure ring (21) is slidably provided on the inner side of the telescopic groove and is connected to the inner wall of the telescopic groove through the spring (8); an upper baffle (10 The lower baffle (12) is provided on the lower ring plate (11); a plurality of handle rods are distributed on the circumference of the drive cover (7); the top of the telescopic component (25) is connected to the adapter ring a (28), the adapter ring a (28) is rotatably connected to the lower ring plate (11), and the bottom of the box body (1) is provided with a load-bearing column (31); the inner wall of the lower baffle (12) is provided with a gear ring (26), the bottom end of the adapter ring a (28) is connected to the adapter ring b (18), and the adapter ring b (18) is provided on the inner wall of the lower baffle (12). A driving gear (23) meshing with the gear ring (26) is provided on the rotation side, and a sliding hole is provided at the center of the driving gear (23); a motor (19) is provided at the bottom of the housing (1), and an output end of the motor (19) is connected to a guide shaft (22) slidably connected to the sliding hole; the lower ring plate (11) and the upper ring plate (9) drive the gear to be ground to rotate by a certain angle, so that the sanding belt a (17) originally corresponding to the tooth becomes corresponding to the tooth groove, ensuring uniformity and sufficiency of the use of the sanding belt a (17), because each time the annular airbag (16) expands to squeeze the sanding belt a (17) to the inner side of the tooth groove, the deformation of the sanding belt a (17) each time is not completely uniform, that is, there may be a small part of the sanding belt a (17) that cannot contact the tooth groove, so it is necessary to use the annular airbag (16) multiple times to squeeze the sanding belt a (17) to the inner side of the tooth groove, so as to realize the multiple grinding function of the tooth groove, ensure the comprehensiveness of the tooth groove grinding, and avoid the existence of grinding dead angles; The bottom of the box body (1) is provided with a mesh plate (24); the recycling mechanism includes a shell (3), a drawer (6) and a magnetic member (29); the shell (3) is provided at the bottom of the box body (1), and the drawer (6) is provided inside the shell (3) in a sliding manner; the magnetic member (29) is provided at the bottom of the shell (3); an exhaust pipe (13) is provided on the shell (3); an exhaust hole aligned with the exhaust pipe (13) is opened on the drawer (6); when the grinding operation is completed, the pressure relief valve (15) is opened to discharge the gas in the air cavity (101) and the annular air bag (16), and the discharged gas enters the drawer (6) through the mesh plate (24) at the bottom of the box body (1), and is then discharged from the exhaust hole on the drawer (6), and finally discharged through the exhaust pipe (13). In the above process, the gas will blow the debris generated during the grinding process into the drawer (6), and under the magnetic effect of the magnetic member (29), the debris is adsorbed on the inner wall of the drawer (6), and finally the debris can be recovered by pulling out the drawer (6).

2. A workpiece grinding device according to claim 1, characterized in that: The inner wall of the box body (1) is provided with a pressure relief valve (15) communicating with the air cavity (101), and a box cover (2) is detachably connected to the box body (1).

3. A workpiece grinding device according to claim 1, characterized in that: The cooling mechanism comprises an annular water tank (4), an air pump (5) and a spiral tube (27); the annular water tank (4) is arranged on the box body (1); the spiral tube (27) is arranged inside the annular water tank (4) and one end of the spiral tube is connected to the air cavity (101); the air pump (5) is arranged on the annular water tank (4) and is connected to the spiral tube (27).

4. A workpiece grinding method, using a workpiece grinding device according to any one of claims 2-3, characterized in that: The steps include: S1. Preparation: Pass the center column (30) through the inner hole of the gear to be ground so that the gear to be ground is stacked on the lower ring plate (11), then put the upper ring plate (9) on the center column (30) and press it on the gear to be ground, and finally thread the drive cover (7) and the screw (14) together to apply pressure to the upper ring plate (9) to achieve clamping and fixing of the gear to be ground; S2, grinding operation: using the air pump (5) in the cooling mechanism to deliver a cold air flow into the annular airbag (16) to expand the annular airbag (16), the annular airbag (16) expands and squeezes the abrasive belt a (17) to the inner side of the tooth groove of the gear to be ground, and then using the telescopic component (25) to drive the upper ring plate (9), the lower ring plate (11) and the gear to be ground to move up and down, so that the tooth groove and the abrasive belt a (17) rub against each other, thereby achieving the grinding function of the tooth groove; S3. Chip recovery: After the grinding of the gear to be ground is completed, the pressure relief valve (15) is opened, so that the gas in the air cavity (101) and the inner side of the annular airbag (16) can be ejected to blow away the chips generated by the grinding. Under the action of the air flow, the chips are allowed to flow into the drawer (6) along with the air flow, and are magnetically attracted to the inside of the drawer (6) under the action of the magnetic member (29), and the air flow is discharged through the exhaust pipe (13).

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