Clamping jig based on gear transmission tightness

Abstract

This utility model discloses a clamping and machining fixture based on gear transmission, including a base plate, a fixture plate, a pneumatic assembly, and a clamping assembly. The fixture plate is mounted on the base plate via support columns. The pneumatic assembly is positioned between the base plate and the fixture plate, and the clamping assembly is fixed to the fixture plate. The workpiece is placed on the fixture plate, and the pneumatic assembly controls the rotation of the clamping assembly. The clamping assembly rotates forward to open and tighten the inner circle of the workpiece, and rotates in the reverse direction to contract and release the workpiece. The clamping assembly uses gear transmission for rotation, and the forward and reverse rotations expand and contract the inner circle of the workpiece, thus enabling rapid clamping and releasing without the need for expansion pins in the screw holes, preventing damage to the screw holes on the workpiece. It can meet the clamping requirements of inner circles of different diameters, improving workpiece compatibility. This solves the problem that existing clamping methods are not suitable for workpieces with large inner diameters or requiring the machining of multiple holes.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a clamping and machining fixture based on gear transmission tension. Background Technology

[0002] When machining parts with internal circular structures, expansion pins or three-jaw chucks are typically used to position and clamp the inner circle. However, this clamping method is only suitable for workpieces with small-diameter internal circular structures. For Figure 1 The workpiece shown has a large inner diameter and requires machining multiple holes. There are no suitable screw holes of the correct size to insert expansion pins, and clamping and unloading are cumbersome. Furthermore, the radial movement distance of the three movable jaws on the three-jaw chuck is limited, making it unable to clamp the two larger inner diameters of the workpiece. Moreover, as the three-jaw chuck wears, the jaws develop a flared shape and gradually deviate from the lathe spindle center, increasing the dimensional and positional tolerances of the machined workpiece and resulting in many defective products with dimensional and appearance errors. Therefore, the existing clamping method is not suitable for workpieces with large inner diameters and requiring machining of multiple holes.

[0003] Therefore, existing technologies still need to be improved and enhanced. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a clamping and machining fixture based on gear transmission tension to solve the problem that the existing clamping method is not suitable for workpieces with large inner diameters and multiple holes that need to be machined.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A clamping and machining fixture based on gear transmission tension is used to clamp workpieces with inner circles. It includes a base plate, a fixture plate, a pneumatic assembly, and a clamping assembly. The fixture plate is mounted on the base plate by a support column. The pneumatic assembly is disposed between the base plate and the fixture plate. The clamping assembly is fixed on the fixture plate.

[0007] The workpiece is placed on the fixture plate, and the pneumatic component controls the rotation of the clamping component. When the clamping component rotates forward, it opens to tighten and clamp the inner circle of the workpiece, and when it rotates in the reverse direction, it closes to release the workpiece.

[0008] In the aforementioned clamping and machining fixture based on gear transmission, the fixture plate is mounted on the base plate by four support columns, and the fixture plate is provided with a first mounting groove and a second mounting groove.

[0009] In the aforementioned clamping and machining fixture based on gear transmission tensioning, the pneumatic assembly includes a first cylinder, a second cylinder, a hand valve, an air inlet pipe, a first air pipe, and a second air pipe;

[0010] The first cylinder and the second cylinder are respectively located below a mounting slot and fixed to the base plate. The air inlet of the hand lever valve is connected to an air inlet pipe. The first air outlet of the hand lever valve is pneumatically connected to the first cylinder through a first air pipe, and the second air outlet of the hand lever valve is pneumatically connected to the second cylinder through a second air pipe. The telescopic rod of the first cylinder extends out from the assembly hole in the middle of the first mounting slot and is connected to the first gear component. The telescopic rod of the second cylinder extends out from the assembly hole in the middle of the second mounting slot and is connected to the second gear component.

[0011] In the aforementioned clamping and machining fixture based on gear transmission tensioning, the air inlet of the hand valve is connected to the air inlet pipe through the first air pipe connector, the first air outlet of the hand valve is connected to one end of the first air pipe through the second air pipe connector, the other end of the first air pipe is connected to the input end of the first three-way connector, one output end of the first three-way connector is connected to one end of the third air pipe, the other end of the third air pipe is connected to one air port of the first cylinder through the fourth air pipe connector, the other output end of the first three-way connector is connected to one end of the fourth air pipe, and the other end of the fourth air pipe is connected to one air port of the second cylinder through the fifth air pipe connector.

[0012] In the aforementioned clamping and machining fixture based on gear transmission tensioning, the second air outlet of the hand valve is connected to one end of the second air pipe through the third air pipe connector, the other end of the second air pipe is connected to the input end of the second three-way connector, one output end of the second three-way connector is connected to one end of the sixth air pipe, the other end of the sixth air pipe is connected to the other air port of the first cylinder through the sixth air pipe connector, the other output end of the second three-way connector is connected to one end of the seventh air pipe, and the other end of the seventh air pipe is connected to the other air port of the second cylinder through the seventh air pipe connector.

[0013] In the aforementioned clamping and machining fixture based on gear transmission tension, the first gear component includes a first flange, a second flange, a first driving gear, three driven gears, three screws, and three fixing pins;

[0014] The second flange is placed in the first mounting groove. The first driving gear is placed on the raised hole in the center of the second flange and is fastened to the telescopic rod of the first cylinder. The three driven gears are respectively placed on the three circular bosses around the raised hole. The outer side of the arc-shaped part of the three driven gears meshes with the first driving gear. The first flange covers each gear. The first flange and the second flange are fixed to the jig plate by three screws. The three driven gears are respectively installed between the two flanges by a fixing pin. The driven gears rotate around the corresponding fixing pin.

[0015] In the aforementioned clamping and machining fixture based on gear transmission tensioning, the first cylinder and the second cylinder are rotary cylinders. The manual lever of the hand valve controls the gas to enter the cylinder from different air paths, controlling the telescopic rod to rotate forward or backward. When the telescopic rod of the first cylinder rotates, it drives the first drive gear to rotate synchronously.

[0016] In the aforementioned clamping and machining fixture based on gear transmission, the three screws are M6 screws. The tails of the three screws pass through the three threaded holes on the first flange and the three threaded holes on the second flange in sequence, and are then screwed into the three mounting holes on the first mounting groove for fixation.

[0017] In the aforementioned clamping and machining fixture based on gear transmission tension, one end of each of the three fixing pins passes through the three pin holes on the first flange, the corresponding pin holes on the arc-shaped part of the driven gear, and then is inserted into the pin mounting hole in the middle of the three round bosses on the second flange for positioning.

[0018] In the aforementioned clamping and machining fixture based on gear transmission tension, three circular bosses are distributed at equal angular intervals on the second flange, and three driven gears are distributed at corresponding equal angular intervals.

[0019] Compared to existing technologies, this utility model provides a gear-driven clamping and loosening fixture for clamping workpieces with inner diameters. It includes a base plate, a fixture plate, a pneumatic assembly, and a clamping assembly. The fixture plate is mounted on the base plate via support columns. The pneumatic assembly is positioned between the base plate and the fixture plate, and the clamping assembly is fixed to the fixture plate. The workpiece is placed on the fixture plate, and the pneumatic assembly controls the rotation of the clamping assembly. The clamping assembly rotates forward to open and tighten the inner diameter of the workpiece, and rotates in the reverse direction to contract and release the workpiece. The clamping assembly uses gear transmission for rotation, and the forward and reverse rotations expand and contract the inner diameter of the workpiece, enabling rapid clamping and loosening. Manual operation is simple and reliable. Compared to existing clamping methods, it eliminates the need for expansion pins in screw holes, preventing damage to the screw holes on the workpiece. It can meet the clamping requirements of inner diameters of different sizes, improving workpiece compatibility. It solves the problem that existing clamping methods are unsuitable for workpieces with large inner diameters or requiring the machining of multiple holes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an existing workpiece to be processed.

[0021] Figure 2 A schematic diagram of the clamping and machining fixture based on gear transmission tension provided by this utility model.

[0022] Figure 3 An exploded view of the clamping and machining fixture based on gear transmission tension provided by this utility model.

[0023] Figure 4 A top view of the clamping and machining fixture provided by this utility model.

[0024] Figure 5 A schematic diagram of the gear component provided by this utility model. Detailed Implementation

[0025] This utility model provides a clamping and machining fixture based on gear transmission tension. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following detailed description, with reference to the accompanying drawings and embodiments, further illustrates the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0026] Please also refer to Figures 2 to 5 This utility model provides a clamping and machining fixture based on gear transmission tension for machining operations. Figure 1 The workpiece 3, which has a large inner diameter and requires the machining of multiple holes, is clamped. This clamping and machining fixture can be installed on a machine tool, and machining can begin immediately after the workpiece is clamped. The clamping and machining fixture includes a base plate 1, a fixture plate 2, a pneumatic assembly, and a clamping assembly. The fixture plate 2 is mounted on the base plate 1 via support columns. The pneumatic assembly is disposed in the gap between the base plate 1 and the fixture plate 2. The clamping assembly is fixed to the fixture plate 2. The workpiece 3 is placed on the fixture plate 2. The pneumatic assembly controls the rotation of the clamping assembly. When the clamping assembly rotates forward, it opens to tighten and clamp the inner diameter of the workpiece. When it rotates in the reverse direction, it contracts and releases the workpiece.

[0027] The clamping assembly uses gear transmission for rotation. Rotation in both directions expands and contracts the inner circle of the workpiece, enabling rapid clamping and release. Manual operation is simple and reliable. Compared to existing clamping methods, it eliminates the need for expansion pins in threaded holes, preventing damage to the threaded holes on the workpiece. It can meet the clamping requirements of inner circles of different diameters, improving workpiece compatibility. It solves the problem that existing clamping methods are unsuitable for workpieces with large inner diameters or requiring the machining of multiple holes.

[0028] In this embodiment, the base plate 1 is a support base plate of the integral structure, which facilitates the installation of the clamping and processing fixture on the worktable and ensures the stability of the clamping and processing process. The workpiece 3 has two inner circles. After it is placed on the fixture plate 2 and clamped, it is necessary to process the front step and multiple holes in the middle of one side (shown in the figure). Here, the main purpose is to clamp the workpiece 3, and the processing content is not limited.

[0029] The fixture plate 2 is mounted on the base plate 1 by four support columns 4. A central through hole 5 is provided in the middle of the four support columns 4. A mounting hole 6 is provided at each of the four corners of the base plate 1. A through hole 7 aligned with the mounting hole is provided at each of the four corners of the fixture plate 2. A long screw is inserted from the through hole 7, passes through the central through hole 5 of the support column 4, and is screwed into the mounting hole 6 for screw connection and fixation.

[0030] based on Figure 1The workpiece shown has two inner circles, and the fixture plate 2 is provided with a first mounting groove 81 and a second mounting groove 82. The clamping assembly includes a first gear and a second gear, and the pneumatic assembly is provided with a first cylinder 9 and a second cylinder 10, which respectively drive a set of gears to move.

[0031] like Figure 3 As shown, the pneumatic assembly includes a first cylinder 9, a second cylinder 10, a lever valve 11, an air inlet pipe 12, a first air pipe 13, and a second air pipe 14. The first cylinder 9 and the second cylinder 10 are respectively disposed below a mounting groove 8 and fixed on the base plate 1. The air inlet of the lever valve 11 is externally connected to the air inlet pipe 12. The first air outlet of the lever valve 11 is pneumatically connected to the first cylinder 9 through the first air pipe 13, and the second air outlet of the lever valve 11 is pneumatically connected to the second cylinder 10 through the second air pipe 14. The telescopic rod of the first cylinder 9 extends from the mounting hole in the middle of the first mounting groove 81 and is connected to the first gear component. The telescopic rod of the second cylinder 10 extends from the mounting hole in the middle of the second mounting groove 82 and is connected to the second gear component.

[0032] In practical implementation, two cylinders are pneumatically connected in parallel by setting up two T-joints, seven air pipe joints, and six air pipes. The air inlet of the hand lever valve 11 is connected to the air inlet pipe 12 through the first air pipe joint 15. The first air outlet of the hand lever valve 11 is connected to one end of the first air pipe 13 through the second air pipe joint 16. The second air outlet of the hand lever valve 11 is connected to one end of the second air pipe 14 through the third air pipe joint 17. The other end of the first air pipe 13 is connected to the input end of the first T-joint 18. The other end of the second air pipe 14 is connected to the input end of the second T-joint. One output end of the first T-joint 18 is connected to one end of the third air pipe 19. The other end of the third air pipe 19... The first cylinder 9 is connected to one air port via the fourth air pipe connector 20. The other output end of the first three-way connector 18 is connected to one end of the fourth air pipe. The other end of the fourth air pipe is connected to one air port of the second cylinder 10 via the fifth air pipe connector. The first output end of the second three-way connector is connected to one end of the sixth air pipe. The other end of the sixth air pipe is connected to another air port of the first cylinder 9 via the sixth air pipe connector. The other output end of the second three-way connector is connected to one end of the seventh air pipe. The other end of the seventh air pipe is connected to another air port of the second cylinder 10 via the seventh air pipe connector.

[0033] The first trachea 13 and the second trachea 14 are relatively long, extending from one side of the base plate 1, such as... Figure 4As shown, the hand valve 11 is located on the outside of the base plate 1 and can be placed on the workbench for easy access to gas via the air inlet pipe 12. The third to sixth air pipes are short air pipes, the length of which can be adjusted according to the distance between the two cylinders and the length of the air pipe connectors. Combined with the corresponding air pipe connectors, the first air pipe 13, the first tee connector 18, and the air pipes at both ends form the first air path; the second air pipe 14, the second tee connector, and the air pipes at both ends form the second air path, serving to connect the two cylinders in parallel and synchronize their movements.

[0034] The first cylinder 9 and the second cylinder 10 are rotary cylinders. By moving the manual lever of the hand valve 11, gas enters the cylinders through different gas paths, controlling the forward or reverse rotation of the telescopic rods. For example, when gas enters the two cylinders through the first gas path, the telescopic rods of both cylinders rotate synchronously in the forward direction (e.g., clockwise); when gas enters the two cylinders through the second gas path, the telescopic rods of both cylinders rotate synchronously in the reverse direction (e.g., counterclockwise). The gas paths and rotation directions can be adjusted as needed and are not limited here. When the two telescopic rods rotate, they drive two gear components to mesh and rotate, achieving the tensioning and contraction operations.

[0035] Please continue reading. Figure 2 and Figure 5 (The first flange is removed for clarity in the diagram of the gear assembly.) The first gear assembly includes a first flange 21, a second flange 22, a first driving gear 23, three driven gears 24, three screws 25, and three fixing pins 26. The second flange 22 is placed in the first mounting groove 81. The first driving gear 23 is placed on the protruding hole 27 in the center of the second flange 22 and is securely mounted on the telescopic rod of the first cylinder 9. The three driven gears 24 are respectively placed on three circular bosses 28 around the protruding hole 27. The outer surfaces of the arc-shaped portions of the three driven gears 24 mesh with the first driving gear 23. The first flange 21 covers each gear. The first flange 21 and the second flange 22 are screwed and fixed to the fixture plate 2 by three screws 25. The three driven gears 24 are respectively mounted between the two flanges by a fixing pin, and the driven gears 24 rotate around the corresponding fixing pin. When the telescopic rod of the first cylinder 9 rotates, it drives the first driving gear 23 to rotate synchronously.

[0036] The first driving gear 23 has teeth all around its outer ring, while the three driven gears 24 are shaped like commas. Each driven gear 24 has multiple teeth around its arc-shaped outer edge. The number of teeth determines the opening and closing angles of the driven gear 24, and the length of the driven gear 24 determines the inner diameter of the workpiece that can be tightened. The teeth of the first driving gear 23 mesh with the arc-shaped parts of the three driven gears 24, driving the driven gears 24 to open outwards or retract inwards. When opening outwards, the tails of the three driven gears 24 approach and eventually abut against the inner circle of the workpiece, tightly pressing against the inner surface of the inner circle to achieve tightening and firmly clamp the workpiece. When retracting inwards, the tails of the three driven gears 24 separate from the inner surface of the inner circle, allowing the workpiece to be removed at any time.

[0037] Two flanges clamp the first driving gear 23 and three driven gears 24 in the middle to prevent the gears from shifting or falling out during rotation. The gears are raised by the raised holes 27 and round bosses 28, preventing them from being affected by being clamped by the flanges. The three round bosses 28 are evenly spaced on the second flange 22, so the three driven gears 24 are also evenly distributed. This ensures that the contact force against the inner circle is evenly distributed during tightening, guaranteeing balanced force and improving clamping strength.

[0038] The three screws 25 are preferably M6 screws. When the first flange 21 and the second flange 22 are screwed and fixed to the fixture plate 2 by the three screws 25, the tails of the three screws 25 pass through the three screw holes on the first flange 21 and the three screw holes on the second flange 22 in sequence, and are screwed into the three mounting holes on the first mounting groove 81 for fixing.

[0039] When the three driven gears 24 are respectively installed between the two flanges by a fixing pin, one end of the three fixing pins passes through the three pin holes on the first flange 21, the corresponding pin holes on the arc-shaped part of the driven gear 24, and then is inserted into the pin mounting hole in the middle of the three round bosses 28 on the second flange 22 for positioning.

[0040] The second gear assembly includes a third flange, a fourth flange, a second driving gear, three driven gears, three screws, and three fixing pins. The fourth flange is placed in a second mounting groove. The second driving gear is placed on the raised hole in the center of the fourth flange and securely mounted on the telescopic rod of the second cylinder. The three driven gears are respectively placed on three circular bosses around the raised hole, and the outer surfaces of the arc-shaped portions of the three driven gears mesh with the second driving gear. The third flange covers each gear. The third and fourth flanges are fixed to the fixture plate by three screws. The three driven gears are each mounted between two flanges by a fixing pin, and the driven gears rotate around their corresponding fixing pins. When the telescopic rod of the second cylinder 10 rotates, it drives the second driving gear to rotate synchronously. The structure and working principle of the second gear assembly are the same as those of the first gear assembly, and will not be described in detail here.

[0041] Please continue reading. Figures 2 to 5 The working principle of the clamping and machining fixture is as follows:

[0042] After aligning the inner circle of the unprocessed workpiece with the first flange 21, place it on the fixture plate 2, with the first flange 21 and the inner circle having a clearance fit.

[0043] Gas enters the hand valve 11 through the air inlet pipe 12. By opening the hand valve 11, the gas is diverted and simultaneously enters one port of each of the two cylinders through the first air pipe 13 and the first three-way connector 18. The telescopic rods of the two cylinders rotate synchronously in the forward direction, driving the two drive gears on the telescopic rods to rotate synchronously in the forward direction. The two drive gears mesh, driving the corresponding three driven gears to rotate around the fixed pin. The tails of the three driven gears gradually open outward, gradually approaching the inner circle of the workpiece until they come into contact. By tightly pressing against the inner side of the inner circle, the tensioning operation is achieved, clamping the workpiece tightly, and the processing of the unprocessed workpiece can begin.

[0044] After processing, the hand valve 11 is reversed, changing the gas transmission path. At this time, the gas enters the other port of the two cylinders simultaneously from the second air pipe 14 and the second three-way connector. The telescopic rods of the two cylinders rotate synchronously in opposite directions, driving the two drive gears on the telescopic rods to rotate synchronously in opposite directions. The two drive gears mesh, driving the corresponding three driven gears to rotate around the fixed pin. The tails of the three driven gears gradually retract inward, separating from the inner side of the inner circle, thus loosening the workpiece. The driven gears do not contact the workpiece, and the workpiece can be easily removed without tension force.

[0045] In summary, this utility model provides a clamping and machining fixture based on gear transmission for tightening and loosening. Using compressed gas as a power source, two sets of gears are driven by two rotary cylinders to rotate forward and in reverse, correspondingly controlling three driven gears to open and tighten or loosen the workpiece. The driving and driven gears are connected in a meshing manner, resulting in stronger tightening force. No expansion pins are needed in the screw holes, preventing damage to the screw holes on the workpiece. It can meet the clamping requirements of inner circles of different diameters, improving workpiece compatibility, enabling rapid clamping and loosening, and is simple and reliable for manual operation.

[0046] The above division of functional modules is only for illustrative purposes. In practical applications, the above functions can be assigned to different functional modules as needed, that is, divided into different functional modules to complete all or part of the functions described above.

[0047] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A clamping jig based on the gear transmission tightness for clamping a workpiece with an inner circle, characterized in that, It includes a base plate, a fixture plate, a pneumatic assembly, and a clamping assembly; the fixture plate is mounted on the base plate via support columns, the pneumatic assembly is disposed between the base plate and the fixture plate, and the clamping assembly is fixed on the fixture plate. The workpiece is placed on the fixture plate, and the pneumatic component controls the rotation of the clamping component. When the clamping component rotates forward, it opens to tighten and clamp the inner circle of the workpiece, and when it rotates in the reverse direction, it closes to release the workpiece.

2. The chucking jig based on the gear transmission tightness according to claim 1, wherein The fixture plate is mounted on the base plate by four support columns, and the fixture plate is provided with a first mounting groove and a second mounting groove.

3. The chucking jig based on the gear transmission tightness according to claim 2, wherein The pneumatic assembly includes a first cylinder, a second cylinder, a lever valve, an air intake pipe, a first air pipe, and a second air pipe; The first cylinder and the second cylinder are respectively located below a mounting slot and fixed to the base plate. The air inlet of the hand lever valve is connected to an air inlet pipe. The first air outlet of the hand lever valve is pneumatically connected to the first cylinder through a first air pipe, and the second air outlet of the hand lever valve is pneumatically connected to the second cylinder through a second air pipe. The telescopic rod of the first cylinder extends out from the assembly hole in the middle of the first mounting slot and is connected to the first gear component. The telescopic rod of the second cylinder extends out from the assembly hole in the middle of the second mounting slot and is connected to the second gear component.

4. The chucking jig based on the gear transmission tightness according to claim 3, wherein The air inlet of the hand lever valve is connected to the air inlet pipe through the first air pipe connector. The first air outlet of the hand lever valve is connected to one end of the first air pipe through the second air pipe connector. The other end of the first air pipe is connected to the input end of the first three-way connector. One output end of the first three-way connector is connected to one end of the third air pipe. The other end of the third air pipe is connected to one air port of the first cylinder through the fourth air pipe connector. The other output end of the first three-way connector is connected to one end of the fourth air pipe. The other end of the fourth air pipe is connected to one air port of the second cylinder through the fifth air pipe connector.

5. The clamping and machining fixture based on gear transmission tension according to claim 4, characterized in that, The second air outlet of the hand valve is connected to one end of the second air pipe through the third air pipe connector. The other end of the second air pipe is connected to the input end of the second three-way connector. One output end of the second three-way connector is connected to one end of the sixth air pipe. The other end of the sixth air pipe is connected to the other air port of the first cylinder through the sixth air pipe connector. The other output end of the second three-way connector is connected to one end of the seventh air pipe. The other end of the seventh air pipe is connected to the other air port of the second cylinder through the seventh air pipe connector.

6. The chucking jig based on the gear transmission tightness according to claim 5, wherein The first gear component includes a first flange, a second flange, a first driving gear, three driven gears, three screws, and three fixing pins; The second flange is placed in the first mounting groove. The first driving gear is placed on the raised hole in the center of the second flange and is fastened to the telescopic rod of the first cylinder. The three driven gears are respectively placed on the three circular bosses around the raised hole. The outer side of the arc-shaped part of the three driven gears meshes with the first driving gear. The first flange covers each gear. The first flange and the second flange are fixed to the jig plate by three screws. The three driven gears are respectively installed between the two flanges by a fixing pin. The driven gears rotate around the corresponding fixing pin.

7. The chucking jig based on the gear transmission tightness according to claim 6, wherein The first cylinder and the second cylinder are rotary cylinders. The manual lever of the hand valve controls the gas to enter the cylinder from different gas paths, controlling the telescopic rod to rotate forward or backward. When the telescopic rod of the first cylinder rotates, it drives the first drive gear to rotate synchronously.

8. The chucking jig based on the gear transmission tightness according to claim 7, wherein, The three screws are M6 screws. The tails of the three screws pass through the three threaded holes on the first flange and the three threaded holes on the second flange in sequence, and are then screwed into the three mounting holes on the first mounting groove for fixation.

9. The chucking jig based on the gear transmission tightness according to claim 7, wherein One end of each of the three fixing pins passes through the three pin holes on the first flange, the corresponding pin holes on the arc-shaped part of the driven gear, and then is inserted into the pin mounting hole in the middle of the three round bosses on the second flange for positioning.

10. The chucking jig based on the gear transmission tightness according to claim 6, wherein, Three circular bosses are distributed at equal angular intervals on the second flange, and three driven gears are distributed at corresponding equal angular intervals.

Images