Clamping device for gear machining

Abstract

The invention relates to the technical field of gear clamps, in particular to a gear machining clamping device which comprises a base plate, a bracket is fixed to the top face of the base plate, the top of the bracket is sleeved with a gear, a screw joint groove is formed in the top end of the bracket, a supporting block is inserted into the inner wall of the screw joint groove, and a screw joint seat is in screw joint with the interior of the screw joint groove. The screw joint seat extrudes and pushes the supporting block to clamp the inner ring surface of the gear, and a limiting plate is mounted at the top end of the screw joint seat; the device has the beneficial effects that the limiting plate serves as a handle for rotating the screw joint base to ascend and descend, and operators can conveniently conduct clamping and loosening operation; a rubber clamping ring and a leading-in ring can be matched to achieve the effect of reinforcing the connection between the screw joint groove and the screw joint seat, and the clamping reliability is enhanced; the clamping device can also be matched with a pressing plate to clamp the gear from the upper part, so that the clamping firmness is improved; and meanwhile, an air cavity and an air spraying opening in the limiting plate can achieve the effect of blowing air to the periphery to blow scraps, integration of multiple functions is achieved, and the practicability and the cost performance of the device are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gear fixtures, and specifically relates to a clamping device for gear processing. Background Art

[0002] In the field of gear processing, gears, as key components in mechanical transmission systems, their processing accuracy and quality directly affect the performance and stability of the entire mechanical equipment. During the gear processing process, the clamping device plays a crucial role. It not only needs to ensure that the gear maintains a stable position during processing to prevent the influence of vibration or displacement on processing accuracy, but also needs to adapt to the processing requirements of different types and sizes of gears.

[0003] Traditional gear processing clamping devices have many limitations. On the one hand, some clamping devices have a single clamping method, only clamping from a certain direction of the gear. During processing, the gear may swing or shift due to the action of processing forces, resulting in a decrease in processing accuracy and a reduction in product qualification rate. On the other hand, some clamping devices are complex to operate, requiring a large amount of time and effort to clamp and loosen the gear, reducing production efficiency. In addition, the debris generated during processing by traditional clamping devices is inconvenient to clean. The accumulation of debris may affect processing quality, and there is a lack of effective cooling measures. Prolonged processing will cause the temperature of the gear and the clamping device to rise, affecting processing accuracy and equipment life. Summary of the Invention

[0004] The purpose of the present invention is to provide a clamping device for gear processing to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A clamping device for gear processing, including a base plate. A bracket is fixed on the top surface of the base plate. A gear is sleeved on the top of the bracket. A threaded groove is opened at the top end of the bracket. A support block is inserted into the inner wall of the threaded groove. A threaded seat is screwed inside the threaded groove. The threaded seat squeezes the support block to clamp the inner ring surface of the gear. A limit plate is installed at the top end of the threaded seat. A turntable is rotatably connected to the bottom surface of the limit plate. A connecting rod is fixed to the bottom surface of the turntable. The bottom end of the connecting rod is fixed to the top surface of a pressure plate. The pressure plate presses above the gear. A pump body is embedded in the top surface of the threaded seat. The pump body sucks air and injects it into an air cavity. The air cavity is opened inside the limit plate. Air holes are opened on the surface of the air cavity. The gas inside the air cavity is sprayed towards the gear through the air holes.

[0006] Preferably, reserved grooves are opened at the four corners on the top surface of the base plate. Through holes are opened at the bottom surfaces of the reserved grooves. The bracket is in the shape of a "convex" cylinder and is centered on the top surface of the base plate. A second rubber pad is fixed on the stepped surface of the bracket. The gear presses on the second rubber pad. The thickness of the gear is less than the distance from the stepped surface of the bracket to the top surface of the bracket.

[0007] Preferably, the screw connection seat is an inverted "convex"-shaped cylinder. A long-shank screw is screwed on the stepped surface of the screw connection seat. After passing through the top surface of the screw connection seat, the long-shank screw is screwed on the bottom surface of the limit plate. There are multiple long-shank screws, and the multiple long-shank screws are distributed in a circular pattern centered on the screw connection seat.

[0008] Preferably, an edge groove is formed on the outer wall of the bracket. The edge groove is an annular groove, and multiple through holes are formed on the surface of the edge groove. The through holes correspond to the support blocks one by one, and the support blocks are inserted into the through holes.

[0009] Preferably, one end of the support block is fixed to the inner ring surface of the rubber belt. The rubber belt is fixed between the top surface and the bottom surface of the edge groove. The other end of the support block is provided with a slope facing upward. The screw connection seat pushes the support block to stretch and deform the rubber belt. The rubber belt is clamped between the support block and the gear, and the gear clamps and limits multiple support blocks from the inner ring.

[0010] Preferably, two chucks with different sizes are formed on the top surface of the bracket. Both chucks are annular grooves with a round opening at the break. An introduction ring is inserted into each of the two chucks in a matching manner. A rubber snap ring is sleeved and fixed at the bottom end of the introduction ring. The rubber snap ring is a ring structure with a round cross-section. The cross-sectional diameter of the rubber snap ring is greater than the width of the slot opening of the chuck. That is, after the limit plate presses on the top surface of the bracket, both the introduction ring and the rubber snap ring are inserted into the chuck, and the rubber snap ring is elastically deformed under pressure.

[0011] Preferably, a first installation groove is formed on the bottom surface of the limit plate. The first installation groove is an annular groove. Expansion grooves are formed on both the inner ring surface and the outer ring surface of the first installation groove. The two expansion grooves have different sizes. The turntable is a ring plate with an inverted "convex"-shaped cross-section. Retaining rings are inserted into both groups of expansion grooves. Multiple screws are screwed on the bottom surface of the retaining ring. After passing through the retaining ring, the screws are screwed on the top surface of the expansion groove. The retaining ring prevents the turntable from coming off and limits its position. There are multiple connecting rods. The pressing plate is a ring plate with an inverted "concave"-shaped cross-section. A first rubber pad is fixed in the groove body of the pressing plate. The thickness of the first rubber pad is greater than the depth of the groove body of the pressing plate.

[0012] Preferably, the air cavity is a spherical cavity. An air jet port is formed at the end of the air injection hole away from the air cavity. The air jet port is a flared port. A storage groove is formed on the top surface of the screw connection seat. The pump body is fixed in the storage groove. The injection pipe of the pump body is inserted into the air cavity. The extraction pipe of the pump body passes through the air cavity and extends to the top surface of the limit plate. A metal mesh cover is fixed on the top surface of the limit plate and covers the extraction pipe. Two symmetrically distributed second installation grooves are formed on the top surface of the limit plate. A limit shaft is fixed between the two parallel side walls of the second installation groove. The limit shaft passes through the handle. A notch is formed at one end of the handle. A rubber clamping strip is fixed at one end of the second installation groove. After the handle is stored in the second installation groove, the rubber clamping strip clamps between the handle and the second installation groove and generates elastic deformation.

[0013] Preferably, a sinking groove is formed on the top surface of the substrate. The sinking groove is a circular ring groove, and a collecting rack is inserted into the interior of the sinking groove. A rubber ring is sleeved and fixed on the inner ring surface of the sinking groove, and the rubber ring is clamped between the sinking groove and the collecting rack to generate elastic deformation.

[0014] A numerical control lathe, characterized in that: it includes the clamping device for gear processing described above.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The clamping device for gear processing proposed by the present invention adopts a double clamping structure. The support block is pushed by the screw connection seat to clamp from the inner ring of the gear, and at the same time, the pressing plate presses the gear from above. This double clamping method can limit the gear in multiple directions, effectively avoiding the problem of gear swing during the grinding process, greatly improving the stability and processing accuracy during gear processing, and ensuring the product quality.

[0016] The limiting plate plays multiple roles in the device. It can be used as a handle for rotating the screw connection seat to lift and lower, facilitating the clamping and loosening operations of the operator; it can also cooperate with the rubber clamping ring and the guiding ring to strengthen the connection between the screw connection groove and the screw connection seat, enhancing the reliability of clamping; it can cooperate with the pressing plate to clamp the gear from above, improving the firmness of clamping; at the same time, the air cavity and the air jet ports inside the limiting plate can also blow air around for chip blowing, realizing the integration of multiple functions, greatly improving the practicality and cost performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a top view of the structure of the present invention; Figure 3 is Figure 2 an enlarged schematic view of the structure at A-A in Figure 4 is Figure 3 an enlarged schematic view of the structure at A in Figure 5 is Figure 3 an enlarged schematic view of the structure at B in Figure 6 is Figure 3 an enlarged schematic view of the structure at C in Figure 7 is a schematic structural diagram of the connection between the bracket and the limiting plate of the present invention; Figure 8 is a schematic structural diagram of the connection between the limiting plate and the screw connection seat of the present invention; Figure 9 is a schematic structural diagram of the connection between the turntable and the pressing plate of the present invention; Figure 10 is a schematic structural diagram of the bracket of the present invention.

[0018] In the figure: substrate 1, reserved slot 2, bracket 3, screwing slot 4, screwing base 5, limiting plate 6, first installation slot 7, expansion slot 8, retaining ring 9, screw 10, turntable 11, connecting rod 12, pressing plate 13, first rubber pad 14, card slot 15, guiding ring 16, rubber snap ring 17, long handle screw 18, side slot 19, through hole 20, supporting block 21, rubber belt 22, second rubber pad 23, second installation slot 24, limiting shaft 25, handle 26, notch 27, rubber clamping strip 28, storage slot 29, air cavity 30, air injection hole 31, air jet port 32, metal mesh cover 33, pump body 34, sunk slot 35, collection rack 36, rubber ring 37, gear 38. Detailed implementation manners

[0019] In order to clearly and completely describe the objectives, technical solutions of the present invention and make the advantages more clearly understood, the following further elaborates on the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some but not all of the embodiments of the present invention, and are only used to explain the embodiments of the present invention, rather than limiting the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0020] Please refer to Figures 1 to 10The present invention provides a technical solution: a clamping device for gear processing, comprising a substrate 1, a bracket 3 is fixed on the top surface of the substrate 1, a gear 38 is sleeved on the top of the bracket 3, a reserved groove 2 is opened at the four corners of the top surface of the substrate 1, a through hole is opened on the bottom surface of the reserved groove 2, the bracket 3 is in the shape of a "convex" cylinder, the bracket 3 is centered on the top surface of the substrate 1, a rubber pad 23 is fixed on the stepped surface of the bracket 3, the gear 38 is pressed on the rubber pad 23, the thickness of the gear 38 is less than the distance from the stepped surface of the bracket 3 to the top surface of the bracket 3, a screw groove 4 is opened on the top of the bracket 3, a support block 21 is inserted into the inner wall of the screw groove 4, a screw seat 5 is screwed inside the screw groove 4, the screw seat 5 pushes the support block 21 to clamp the inner ring surface of the gear 38, a limiting plate 6 is installed on the top of the screw seat 5, and the screw seat 5 is in the shape of an inverted "convex" cylinder A long-handled screw 18 is screwed on the stepped surface of the screw-connecting seat 5, and the long-handled screw 18 penetrates the top surface of the screw-connecting seat 5 and is screwed on the bottom surface of the limiting plate 6. There are multiple long-handled screws 18, and the multiple long-handled screws 18 are distributed in a circle with the screw-connecting seat 5 as the central axis. The outer wall of the bracket 3 is provided with a side groove 19, and the side groove 19 is an annular groove. The surface of the side groove 19 is provided with multiple through-holes 20, and the through-holes 20 and the support blocks 21 correspond one by one, and the support blocks 21 are inserted into the through-holes 20; one end of the support block 21 is fixed to the inner ring surface of the rubber belt 22, and the rubber belt 22 is fixed between the top surface of the side groove 19 and the bottom surface of the side groove 19, and the other end of the support block 21 is provided with a slope, and the slope faces upward, and the screw-connecting seat 5 pushes the support block 21 to stretch the rubber belt 22 to deform, and the rubber belt 22 is clamped between the support block 21 and the gear 38, and the gear 38 clamps and limits the multiple support blocks 21 from the inner ring.

[0021] When in use, the base plate 1 is laid on the table top of the CNC lathe, and then the bolts are passed through the reserved grooves 2 and the holes on the table top and locked to complete the fixing of the base plate 1 on the table top of the CNC lathe. Subsequently, the gear 38 to be polished is sleeved on the bracket 3, and then the limit plate 6 is moved to screw the screw seat 5 into the screw groove 4. During this process, the screw seat 5 squeezes the support block 21 into the through-opening 20 along the slope, and the support block 21 pulls the rubber belt 22 against the inner ring surface of the gear 38. At this time, the gear 38 is clamped by multiple support blocks 21 from the inner ring, thereby limiting the gear 38 and avoiding the problem of swinging of the gear 38 during the polishing work. Since the screw seat 5 is pulled and twisted, the situation where the gear 38 cannot be clamped when the power is off is avoided, and the polishing work at this time is to manually remove the debris adhered to the surface of the gear 38.

[0022] The top surface of the bracket 3 is provided with two card slots 15 of different sizes. Both card slots 15 are circular ring slots with a round opening at the break. An introduction ring 16 is inserted into each of the two card slots 15 in a matching manner. A rubber clamping ring 17 is sleeved and fixed at the bottom end of the introduction ring 16. The rubber clamping ring 17 is a circular ring structure with a circular cross-section. The cross-sectional diameter of the rubber clamping ring 17 is greater than the width of the slot opening of the card slot 15. That is, after the limiting plate 6 presses on the top surface of the bracket 3, both the introduction ring 16 and the rubber clamping ring 17 are inserted into the card slot 15, and the rubber clamping ring 17 is elastically deformed under pressure. At this time, the rubber clamping ring 17 cooperates with the introduction ring 16 to not only realize the traction and limiting effect on the limiting plate 6, but also the rubber clamping ring 17 acts as an elastic gasket after the screw connection groove 4 and the screw connection seat 5 are screwed together, avoiding loosening of the screw connection groove 4 and the screw connection seat 5. That is, the rubber clamping ring 17 cooperates with the introduction ring 16 to serve two purposes with one object.

[0023] A turntable 11 is rotatably connected to the bottom surface of the limiting plate 6. A connecting rod 12 is fixed to the bottom surface of the turntable 11. The bottom end of the connecting rod 12 is fixed to the top surface of a pressing plate 13. The pressing plate 13 presses above the gear 38. An installation groove one 7 is provided on the bottom surface of the limiting plate 6. The installation groove one 7 is a circular ring groove. Expansion grooves 8 are provided on both the inner ring surface and the outer ring surface of the installation groove one 7. The two expansion grooves 8 are of different sizes. The turntable 11 is a circular ring plate with an inverted "convex" cross-section. Retaining rings 9 are inserted into both groups of expansion grooves 8. A plurality of screws 10 are screwed to the bottom surface of the retaining ring 9. The screws 10 penetrate through the retaining ring 9 and are screwed to the top surface of the expansion groove 8. The retaining ring 9 prevents the turntable 11 from coming off and limits its position. There are a plurality of connecting rods 12. The pressing plate 13 is a circular ring plate with an inverted "concave" cross-section. A rubber pad one 14 is fixed in the groove body of the pressing plate 13. The thickness of the rubber pad one 14 is greater than the depth of the groove body of the pressing plate 13. When the screw connection seat 5 falls to the bottom of the screw connection groove 4, the pressing plate 13 presses above the gear 38. That is, the downward movement of the limiting plate 6 not only drives the screw connection seat 5 to push and squeeze multiple groups of supporting blocks 21 to clamp the gear 38 from the inside, but also pushes the pressing plate 13 to clamp the gear 38 from above. That is, the downward movement of the limiting plate 6 simultaneously realizes the clamping and limiting of the gear 38 by two sets of structures, improving the firmness of the gear 38 when it is clamped.

[0024] The top surface of the screw joint seat 5 is embedded with a pump body 34. The pump body 34 sucks air and injects it into the air cavity 30. The air cavity 30 is opened inside the limit plate 6. An air outlet hole 31 is opened on the surface of the air cavity 30. The gas inside the air cavity 30 is sprayed towards the gear 38 through the air outlet hole 31. The air cavity 30 is a spherical cavity. One end of the air outlet hole 31 away from the air cavity 30 is provided with a jet port 32. The jet port 32 is in a flared shape. A receiving groove 29 is opened on the top surface of the screw joint seat 5. The pump body 34 is fixed in the receiving groove 29. The injection pipe of the pump body 34 is inserted into the air cavity 30. The suction pipe of the pump body 34 penetrates through the air cavity 30 and extends into the top surface of the limit plate 6. A metal mesh cover 33 is fixed on the top surface of the limit plate 6. The metal mesh cover 33 covers the suction pipe. When the gear 38 is being polished, the switch of the pump body 34 is triggered. After the air sucked by the pump body 34 is injected into the air cavity 30, the air is transported to the jet port 32 through the air outlet hole 31 and sprayed out. It not only blows off the debris ground off the surface of the gear 38, but also realizes blowing air to cool down the gear 38. It should be noted that the screw joint seat 5 is fixed below the limit plate 6 by a long handle screw 18. After the screw joint seat 5 is removed from below the limit plate 6, the pump body 34 is exposed, facilitating the maintenance of the pump body 34. At this time, the limit plate 6 realizes the function of blowing air around.

[0025] Two symmetrically distributed second installation grooves 24 are opened on the top surface of the limit plate 6. A limit shaft 25 is fixed between two parallel side walls of the second installation groove 24. The limit shaft 25 penetrates through the handle 26. A notch 27 is opened at one end of the handle 26. A rubber clamping strip 28 is fixed at one end of the second installation groove 24. After the handle 26 is received in the second installation groove 24, the rubber clamping strip 28 is clamped between the handle 26 and the second installation groove 24 and generates elastic deformation. A sunk groove 35 is opened on the top surface of the base plate 1. The sunk groove 35 is an annular groove. A collection rack 36 is inserted into the inside of the sunk groove 35. A rubber ring 37 is sleeved and fixed on the inner ring surface of the sunk groove 35. The rubber ring 37 is clamped between the sunk groove 35 and the collection rack 36 and generates elastic deformation. The collection rack 36 is used to receive the ground-off debris. After the gear 38 is removed from above the bracket 3, the collection rack 36 can be pulled out of the sunk groove 35, and the debris collected inside the collection rack 36 can be cleaned out. When it is necessary to screw the screw joint seat 5, fingers are inserted into the notch 27, and the handle 26 is rotated 180 degrees around the limit shaft 25 as the central axis. After both handles 26 are pulled out from the corresponding second installation grooves 24, both hands hold the two handles 26 and rotate the limit plate 6. The limit plate 6 drives the screw joint seat 5 to move synchronously, and it is more labor-saving compared to turning the limit plate 6 by hand. The limit plate 6 not only realizes the function of the handle for rotating the screw joint seat 5 to lift and lower, but also the limit plate 6 cooperates with the rubber snap ring 17 and the guiding ring 16 to realize the function of strengthening the connection between the screw joint groove 4 and the screw joint seat 5. And the guiding ring 16 cooperates with the pressing plate 13 to realize the function of clamping the gear 38 from above. Moreover, the limit plate 6 also realizes the function of blowing air around for blowing debris. The above-mentioned multiple functions can be realized simultaneously, that is, the limit plate 6 serves multiple purposes and has rich functions.

[0026] The detailed method of using the clamping device for gear processing is as follows: lay the substrate 1 on the table of the CNC lathe, use bolts to pass through the reserved groove 2 and the holes on the table and then lock them to complete the fixation of the substrate 1 on the table of the CNC lathe. Sleeve the gear 38 that needs to be polished on the bracket 3. At this time, the gear 38 is pressed on the rubber pad 23 fixed on the stepped surface of the bracket 3, and the thickness of the gear 38 is less than the distance from the stepped surface of the bracket 3 to the top surface of the bracket 3. Insert your finger into the notch 27 at one end of the handle 26, turn the handle 26 180 degrees with the limit axis 25 as the center axis, so that both handles 26 are pulled out from the corresponding installation groove 24. Hold the two handles 26 with both hands and rotate the limit plate 6. The limit plate 6 drives the screw seat 5 to move synchronously, and the screw seat 5 is screwed into the screw groove 4 at the top of the bracket 3. During this process, the screw-in seat 5 squeezes the support block 21 into the through-hole 20 along the slope of the support block 21, and the support block 21 stretches the rubber belt 22 to deform, and the rubber belt 22 is clamped between the support block 21 and the gear 38, and the support block 21 is clamped and limited from the inner ring of the gear 38. When the screw-in seat 5 falls on the bottom of the screw-in groove 4, the pressure plate 13 presses on the top of the gear 38. The falling of the limiting plate 6 not only drives the screw-in seat 5 to push the multiple groups of support blocks 21 to clamp the gear 38 from the inside, but also pushes the pressure plate 13 to clamp the gear 38 from the top, so as to realize the clamping and limiting of the gear 38 by the two groups of structures, and improve the firmness of the gear 38 when being clamped. After the limiting plate 6 is pressed on the top surface of the bracket 3, the introduction ring 16 and the rubber clamp ring 17 are both inserted into the clamping groove 15 opened on the top surface of the bracket 3, and the rubber clamp ring 17 is compressed to produce elastic deformation. The rubber snap ring 17 cooperates with the introduction ring 16 to achieve the traction and limiting effect on the limit plate 6, and the rubber snap ring 17 also acts as an elastic gasket after the screw groove 4 and the screw seat 5 are screwed together to prevent the screw groove 4 and the screw seat 5 from loosening. When the gear 38 is polished, the switch of the pump body 34 is triggered. The pump body 34 draws air into the air cavity 30, and the gas inside the air cavity 30 is transported to the jet port 32 through the air delivery hole 31 to be ejected, blowing off the debris polished off the surface of the gear 38, and at the same time achieving the blowing and cooling of the gear 38. Debris collection: A collection rack 36 is inserted into the sink 35 opened on the top surface of the substrate 1, and a fixed rubber ring 37 is sleeved on the inner ring surface of the sink 35, which is clamped between the sink 35 and the collection rack 36 to produce elastic deformation. The collection rack 36 is used to receive the debris dropped by grinding. When the gear 38 is removed from the top of the bracket 3, the collecting frame 36 can be pulled out from the sink 35 to clean out the debris collected in the collecting frame 36. The screw seat 5 is fixed to the bottom of the limit plate 6 by the long-handled screw 18. When the screw seat 5 is removed from the bottom of the limit plate 6, the pump body 34 leaks out, which is convenient for the inspection and maintenance of the pump body 34.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping device for gear processing, comprising a substrate (1), characterized in that: A bracket (3) is fixed on the top surface of the substrate (1). A gear (38) is sleeved on the top of the bracket (3). A screw connection groove (4) is opened at the top end of the bracket (3). A support block (21) is inserted into the inner wall of the screw connection groove (4). A screw connection seat (5) is screwed inside the screw connection groove (4). The screw connection seat (5) squeezes the support block (21) to clamp the inner ring surface of the gear (38). A limit plate (6) is installed at the top end of the screw connection seat (5). A turntable (11) is rotatably connected to the bottom surface of the limit plate (6). A connecting rod (12) is fixed to the bottom surface of the turntable (11). The bottom end of the connecting rod (12) is fixed to the top surface of a pressing plate (13). The pressing plate (13) presses above the gear (38). A pump body (34) is embedded in the top surface of the screw connection seat (5). The pump body (34) sucks air and injects it into an air cavity (30). The air cavity (30) is opened inside the limit plate (6). An air injection hole (31) is opened on the surface of the air cavity (30). The gas inside the air cavity (30) is sprayed towards the gear (38) through the air injection hole (31).

2. The clamping device for gear processing according to claim 1, wherein: Reserved grooves (2) are opened at the four corners of the top surface of the substrate (1). A perforation is opened at the bottom surface of the reserved groove (2). The bracket (3) is in the shape of a "convex" cylindrical shape. The bracket (3) is centered on the top surface of the substrate (1). A second rubber pad (23) is fixed on the stepped surface of the bracket (3). The gear (38) presses on the second rubber pad (23). The thickness of the gear (38) is less than the distance from the stepped surface of the bracket (3) to the top surface of the bracket (3).

3. A clamping device for gear processing according to claim 1, characterized in that: The screw connection seat (5) is in the shape of an inverted "convex" cylindrical shape. A long handle screw (18) is screwed on the stepped surface of the screw connection seat (5). The long handle screw (18) passes through the top surface of the screw connection seat (5) and is screwed to the bottom surface of the limit plate (6). There are multiple long handle screws (18), and the multiple long handle screws (18) are distributed in a circular pattern with the screw connection seat (5) as the central axis.

4. A clamping device for gear processing according to claim 1, characterized in that: An edge groove (19) is opened on the outer wall of the bracket (3). The edge groove (19) is in the shape of an annular groove. Multiple through holes (20) are opened on the surface of the edge groove (19). The through holes (20) correspond to the support blocks (21) one by one. The support blocks (21) are inserted into the through holes (20).

5. A clamping device for gear processing according to claim 4, characterized in that: One end of the support block (21) is fixed to the inner ring surface of a rubber belt (22). The rubber belt (22) is fixed between the top surface and the bottom surface of the edge groove (19). The other end of the support block (21) has a slope facing upwards. The screw connection seat (5) pushes the support block (21) to cause the rubber belt (22) to deform under tension. The rubber belt (22) is clamped between the support block (21) and the gear (38). The gear (38) is clamped and limited by multiple support blocks (21) from the inner ring.

6. A clamping device for gear processing according to claim 1, characterized in that: The top surface of the bracket (3) is provided with two clamping grooves (15) of different sizes. Both clamping grooves (15) are circular ring grooves with a circular opening at the break. An introduction ring (16) is inserted into each of the two clamping grooves (15) in a matching manner. A rubber clamping ring (17) is sleeved and fixed at the bottom end of the introduction ring (16). The rubber clamping ring (17) is a circular ring structure with a circular cross-section. The cross-sectional diameter of the rubber clamping ring (17) is greater than the width of the notch of the clamping groove (15). That is, after the limiting plate (6) presses on the top surface of the bracket (3), the introduction ring (16) and the rubber clamping ring (17) are both inserted into the clamping groove (15), and the rubber clamping ring (17) is elastically deformed under pressure.

7. A clamping device for gear processing according to claim 1, characterized in that: An installation groove one (7) is provided on the bottom surface of the limiting plate (6). The installation groove one (7) is a circular ring groove. Expansion grooves (8) are provided on both the inner ring surface and the outer ring surface of the installation groove one (7). The two expansion grooves (8) have different sizes. The turntable (11) is a circular ring plate with an inverted "convex" cross-section. A retaining ring (9) is inserted into each of the two groups of expansion grooves (8). A plurality of screws (10) are screwed on the bottom surface of the retaining ring (9). After passing through the retaining ring (9), the screws (10) are screwed on the top surface of the expansion groove (8). The retaining ring (9) prevents the turntable (11) from coming off and limits its position. There are a plurality of connecting rods (12). The pressing plate (13) is a circular ring plate with an inverted "concave" cross-section. A rubber pad one (14) is fixed in the groove body of the pressing plate (13). The thickness of the rubber pad one (14) is greater than the depth of the groove body of the pressing plate (13).

8. A clamping device for gear processing according to claim 1, characterized in that: The air cavity (30) is a spherical cavity. An air jet port (32) is provided at one end of the air inlet hole (31) away from the air cavity (30). The air jet port (32) is a flared port. A storage groove (29) is provided on the top surface of the screw connection seat (5). The pump body (34) is fixed in the storage groove (29). The injection pipe of the pump body (34) is inserted into the air cavity (30). The extraction pipe of the pump body (34) passes through the air cavity (30) and extends to the top surface of the limiting plate (6). A metal mesh cover (33) is fixed on the top surface of the limiting plate (6). The metal mesh cover (33) covers the extraction pipe. Two symmetrically distributed installation grooves two (24) are provided on the top surface of the limiting plate (6). A limiting shaft (25) is fixed between two parallel side walls of the installation groove two (24). The limiting shaft (25) passes through the handle (26). A notch (27) is provided at one end of the handle (26). A rubber clamping strip (28) is fixed at one end of the installation groove two (24). After the handle (26) is stored in the installation groove two (24), the rubber clamping strip (28) is clamped between the handle (26) and the installation groove two (24) and elastically deformed.

9. A clamping device for gear processing according to claim 1, characterized in that: A sunk groove (35) is provided on the top surface of the substrate (1). The sunk groove (35) is a circular ring groove. A collection rack (36) is inserted into the sunk groove (35). A rubber ring (37) is sleeved and fixed on the inner ring surface of the sunk groove (35). The rubber ring (37) is clamped between the sunk groove (35) and the collection rack (36) and elastically deformed.

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