Tool clamp

Abstract

The utility model relates to the technical field of part machining, and discloses a work fixture which comprises a base, a chuck assembly, a plurality of limiting assemblies, a supporting piece and an air tightness detection assembly, the chuck assembly is fixedly installed on the base, the limiting assemblies are fixedly installed on the base, and the limiting assemblies are arranged at the circumferential positions of the chuck assembly and suitable for limiting vertical displacement of parts to be machined. The plurality of supporting pieces are detachably installed on the base, the supporting pieces are suitable for supporting a to-be-processed part, and the airtightness detection assembly is arranged at the top of the supporting pieces, the airtightness detection assembly is arranged, and the airtightness detection assembly judges the fitting degree between the to-be-processed part and the supporting pieces by detecting the airtightness between the supporting pieces and the to-be-processed part. The limiting assembly is combined to limit the vertical displacement of the to-be-machined part, so that the stability of supporting the end face of the to-be-machined part by the supporting piece is guaranteed, the to-be-machined part is prevented from shaking during machining, the precision of the machined part is improved, and the operation reliability of engineering machinery is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing, in particular to a tooling fixture. Background Art

[0002] As the power transmitter of crawler engineering machinery, the driving wheel is generally directly connected to the driving motor, directly transmitting power to the track, thereby driving the entire chassis to move forward or reverse.

[0003] Most drive wheels are produced by casting or forging. In order to ensure that the driving gear set of the construction machinery can withstand a larger driving force, no matter what manufacturing method is used, the product must go through rough casting (forging), machining, tooth surface quenching and other processes before finally being delivered to customers for use.

[0004] In the prior art, the tooling fixture used during the machining of the driving wheel cannot ensure stable support for the end surface of the driving wheel, and the workpiece is very likely to fall off during the clamping process, thereby affecting the machining accuracy of the finished driving wheel. Utility Model Content

[0005] In view of this, the utility model provides a tooling fixture to solve the problem that the tooling fixture cannot ensure stable support for the end surface of the driving wheel during processing of the driving wheel.

[0006] The utility model provides a tooling fixture, comprising a base, a chuck assembly, a limit assembly, a support member and an airtight detection assembly, wherein the chuck assembly is fixedly mounted on the base and is suitable for clamping a part to be processed, a plurality of limit assemblies are fixedly mounted on the base, the limit assemblies are arranged at the circumferential position of the chuck assembly and are suitable for limiting the vertical displacement of the part to be processed, a plurality of support members are detachably mounted on the base, the support members are suitable for supporting the part to be processed, and the airtight detection assembly is arranged on the top of the support member.

[0007] Beneficial effect: The utility model provides an airtight detection component. When the part to be processed is placed on the support, the airtight detection component determines the degree of fit between the part to be processed and the support by detecting the airtightness between the support and the part to be processed. Combined with the vertical displacement limit of the part to be processed by the limit component, the stability of the support supporting the end face of the part to be processed is ensured, and the shaking of the part to be processed during processing is avoided, thereby improving the accuracy of the processed parts and further ensuring the reliability of the operation of the construction machinery.

[0008] In an optional embodiment, the airtight detection assembly includes a pipeline and a detection member, the pipeline is arranged on the base and the support member, the pipeline connects the base and the support member, one end of the pipeline is suitable for abutting against the processed part, and the other end is suitable for connecting to the air source, and the detection member is arranged on the top of the support member.

[0009] In an optional embodiment, the chuck assembly includes a chuck body, a claw and a drive assembly. The chuck body is fixedly mounted on the base. A plurality of mounting grooves arranged along the radial direction are provided on the top of the chuck body. A plurality of claws are correspondingly and movably mounted in the mounting grooves. The drive assembly is arranged inside the chuck body. The drive assembly is movably connected to the claws and is suitable for driving the plurality of claws to move along the mounting grooves.

[0010] Beneficial effects: The utility model can drive multiple claws to move synchronously through the driving assembly, ensuring that the parts to be processed are kept in the center position while being clamped, avoiding shaking and deflection caused by the rotation of the parts to be processed, thereby ensuring the accuracy of the parts after processing.

[0011] In an optional embodiment, a guide groove perpendicular to the moving direction of the claw is provided at the bottom of the claw, a first mounting hole is provided on the side wall of the chuck body, the driving assembly includes a butterfly gear and a bevel gear, a spiral groove is provided on the top of the butterfly gear, the spiral groove is engaged with the guide groove, a first tooth portion arranged along the radial direction is provided at the bottom of the butterfly gear, a second tooth portion is provided on the bevel gear, the second tooth portion is meshed with the first tooth portion, the bevel gear is located in the chuck body, and one end of the bevel gear is installed in the first mounting hole.

[0012] In an optional embodiment, the fixture further includes a position detection component fixedly mounted on the base, and the position detection component is electrically connected to the claw.

[0013] Beneficial effects: The utility model can detect whether the movement of the clamping claw is in place and whether the workpiece to be processed is clamped or loosened by setting a detection component.

[0014] In an optional embodiment, the position detection component includes a first sensor and a second sensor, the first sensor is fixedly mounted on the base and is located on the path where the clamping claw moves toward the part to be processed, and the second sensor is fixedly mounted on the base and is located on the path where the clamping claw moves away from the part to be processed.

[0015] Beneficial effect: The utility model is convenient for detecting whether the clamping claws clamp the parts to be processed by setting the first sensor, and is convenient for detecting whether the clamping claws loosen the parts to be processed by setting the second sensor, so that the operator can perform the processing procedure on the installed parts to be processed, or remove the processed parts.

[0016] In an optional embodiment, the limiting assembly includes a rotary driver and a pressure plate. The rotary driver is fixedly mounted on the base. A driving end is provided on the top of the rotary driver. The pressure plate is connected to the driving end of the rotary driver. The bottom end of the pressure plate is suitable for abutting against the part to be processed.

[0017] Beneficial effect: The utility model can press the parts to be processed by rotating the pressing plate through the rotating driver, avoiding vertical displacement of the parts to be processed during processing, thereby ensuring the accuracy of the parts after processing.

[0018] In an optional embodiment, the rotary driver includes a cylinder, a piston rod and an end cover. The cylinder is fixedly mounted on the base. One end of the cylinder is an opening. The cylinder is provided with an oil inlet hole and an oil outlet hole. The piston rod is provided with a threaded groove. The threaded groove is arranged inside the cylinder. The threaded groove connects the oil inlet hole and the oil outlet hole. The pressure plate is fixedly mounted on the end of the piston rod away from the threaded groove. The end cover is arranged on the opening. The end cover is provided with a second mounting hole. One end of the piston rod mounting the pressure plate extends out of the second mounting hole.

[0019] In an optional embodiment, the fixture further includes a protective member, which is covered on the chuck body and detachably connected to the base.

[0020] Beneficial effect: The utility model can prevent iron cuttings generated during processing from entering the chuck assembly by providing a protective piece.

[0021] In an optional embodiment, the fixture further includes a chip cleaning assembly fixedly mounted on the base, and the chip cleaning assembly is provided with a plurality of water outlets, which face the parts to be processed.

[0022] Beneficial effect: The utility model provides a chip cleaning component, which can flush the iron cuttings generated during processing away from the chuck component, thereby achieving a chip cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a fixture according to an embodiment of the utility model;

[0025] Figure 2 It is a schematic structural diagram of another viewing angle of a tooling fixture according to an embodiment of the utility model;

[0026] Figure 3 This is a structural schematic diagram of a tooling fixture without a protective piece according to an embodiment of the utility model;

[0027] Figure 4 This is a schematic structural diagram of a fixture without protective parts and claws according to an embodiment of the utility model;

[0028] Figure 5 The present invention is a schematic structural diagram of a fixture and a part to be processed according to an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Base;

[0031] 2. Chuck assembly; 201. Chuck body; 202. Mounting slot; 203. Clamping claw;

[0032] 3. Support parts;

[0033] 4. Position detection component;

[0034] 5. Limiting assembly; 501. Rotation driver; 502. Pressing plate;

[0035] 6. Protective parts;

[0036] 7. Chip cleaning component;

[0037] 8. Parts to be processed. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0039] In the related technology, there are two common methods for drilling holes in the drive wheels of excavators for construction machinery:

[0040] The first method is to use a drilling and milling machine and a drilling guide sleeve for processing. This processing method has no tooling positioning, and the processing part 8 is processed by using a contoured drilling guide sleeve. The disadvantages of this processing form are that the position of the mounting hole and the positioning hole of the processing part 8 is guaranteed by the drilling guide sleeve, and the repeated positioning accuracy is low; and a separate drilling guide sleeve needs to be designed for each processing part 8, which has poor versatility; and it is impossible to achieve automated processing.

[0041] The second is to use a hydraulic clamp. The commonly used tooling is to use a centering plate for positioning, a rotating cylinder to press the web, and a clamping device to clamp the teeth to prevent the workpiece from rotating during processing. The disadvantage of this processing form is that the center of the part 8 to be processed needs to be re-aligned each time the model is changed, and the entire clamp needs to be replaced. The debugging is difficult, the interchangeability of the clamp is poor, and it is impossible to judge whether the part 8 to be processed is clamped in place.

[0042] Combine the following Figures 1 to 5 , describing an embodiment of the utility model.

[0043] According to the embodiments of the present utility model, Figures 1 to 5 As shown, a tooling fixture is provided, including a base 1, a chuck assembly 2, a limit assembly 5, a support member 3 and an airtight detection assembly. The chuck assembly 2 is fixedly mounted on the base 1, and is suitable for clamping a part to be processed 8. A plurality of limit assemblies 5 are fixedly mounted on the base 1, and the limit assemblies 5 are arranged at the circumferential position of the chuck assembly 2, and are suitable for limiting the vertical displacement of the part to be processed 8. A plurality of support members 3 are detachably mounted on the base 1, and the support members 3 are suitable for supporting the part to be processed 8. The airtight detection assembly is arranged on the top of the support member 3.

[0044] Specifically, Figure 5 As shown, in this embodiment, there is no specific limitation on the part 8 to be processed. In order to conform to the actual situation, in this embodiment, the part 8 to be processed is the driving wheel of an excavator. The driving wheel of the excavator is in a circular ring shape. After the turning process of the driving wheel of the excavator is completed, a hole turning tool is used to process the bolt holes on the driving wheel of the excavator, and the inner wall of the driving wheel of the excavator needs to be clamped during processing.

[0045] In this embodiment, the base 1 is rectangular, and its top is a horizontal plane. The chuck assembly 2, the limit assembly 5 and the support member 3 are installed on the top of the base 1. In some other embodiments, the base 1 can also be set to a desired shape according to actual conditions.

[0046] In this embodiment, the chuck assembly 2 is fixedly installed in the middle position of the base 1, and the chuck assembly 2 is used to clamp and position the inner wall of the part to be processed 8. The support member 3 is detachably arranged on the base 1, and multiple support members 3 are located on the periphery of the chuck assembly 2. The support member 3 is used to support the bottom surface of the part to be processed 8. The limit assembly 5 is fixedly installed on the base 1, and is located at the periphery of the chuck assembly 2 away from the support member 3. The limit assembly 5 is used to limit the top surface of the part to be processed 8 to prevent the part to be processed 8 from being displaced in the vertical direction.

[0047] In this embodiment, there is no specific limitation on the number of the limiting components 5 . To meet the actual situation, in this embodiment, the number of the limiting components 5 is three, and the angle between the three limiting components 5 is 120°.

[0048] The utility model sets an airtight detection component. When the part to be processed 8 is placed on the support 3, the airtight detection component determines the degree of fit between the part to be processed 8 and the support 3 by detecting the airtightness between the support 3 and the part to be processed 8. Combined with the vertical displacement limit of the part to be processed 8 by the limit component 5, the stability of the support 3 supporting the end face of the part to be processed 8 is ensured, and the part to be processed 8 is prevented from shaking during processing, thereby improving the accuracy of the processed parts and further ensuring the reliability of the operation of the engineering machinery.

[0049] In one embodiment, the airtight detection assembly includes a pipeline and a detection component. The pipeline is arranged on the base 1 and the support 3. The pipeline connects the base 1 and the support 3. One end of the pipeline is suitable for abutting against the processed part, and the other end is suitable for connecting with the air source. The detection component is arranged on the top of the support 3.

[0050] Specifically, in this embodiment, a ventilation pipeline is provided on the base 1, and a corresponding ventilation pipeline is provided on the support 3. The ventilation pipeline in the support 3 connects the top and bottom of the support 3, and the bottom of the support 3 is connected to the ventilation pipeline on the base 1. The ventilation pipeline on the top of the support 3 is used to abut against the part 8 to be processed. Compressed gas is input from the base 1 to the contact position of the support 3 and the part 8 to be processed through the air source. Whether there is gas overflow at the contact position of the support 3 and the part 8 to be processed is detected by the detection part, so it can be judged that there is a gap between the support 3 and the part 8 to be processed. Then, by adjusting the support 3 and the part 8 to be processed, the detection part detects that there is no gas overflow between the support 3 and the part 8 to be processed, so as to ensure that the part 8 to be processed is firmly installed.

[0051] In one embodiment, Figure 3 and Figure 4 As shown, the chuck assembly 2 includes a chuck body 201, claws 203 and a driving assembly. The chuck body 201 is fixedly mounted on the base 1. A plurality of mounting grooves 202 arranged along the radial direction are provided on the top of the chuck body 201. A plurality of claws 203 are correspondingly and movably mounted in the mounting grooves 202. The driving assembly is arranged inside the chuck body 201. The driving assembly is movably connected to the claws 203 and is suitable for driving the plurality of claws 203 to move along the mounting grooves 202.

[0052] Specifically, in this embodiment, the chuck body 201 is cylindrical, the interior of the chuck body 201 is a cavity, and three mounting grooves 202 are arranged on the top of the chuck body 201. The mounting grooves 202 are arranged along the radial direction of the chuck body 201, and the angle between the three mounting grooves 202 is 120°. The three clamping claws 203 are movably installed in the mounting grooves 202, respectively, and the driving assembly is installed inside the chuck body 201. The driving assembly is connected to the three clamping claws 203 and is used to drive the three clamping claws 203 to move synchronously in the mounting grooves 202. When the clamping claws 203 move to abut against the part 8 to be processed, the part 8 to be processed can be clamped.

[0053] The utility model can drive multiple claws 203 to move synchronously through the driving assembly, ensuring that the part 8 to be processed is kept in the center position while being clamped, avoiding shaking and deflection of the part 8 to be processed, thereby ensuring the accuracy of the processed part.

[0054] In one embodiment, a guide groove perpendicular to the moving direction of the clamping claw 203 is provided at the bottom of the clamping claw 203, a first mounting hole is provided on the side wall of the chuck body 201, the driving assembly includes a butterfly gear and a bevel gear, a spiral groove is provided on the top of the butterfly gear, the spiral groove is engaged with the guide groove, a first tooth portion arranged along the radial direction is provided at the bottom of the butterfly gear, a second tooth portion is provided on the bevel gear, the second tooth portion is meshed with the first tooth portion, the bevel gear is located in the chuck body 201, and one end of the bevel gear is installed in the first mounting hole.

[0055] Specifically, in this embodiment, a plurality of mutually parallel guide grooves are provided at the bottom of the clamping jaw 203, the direction of the guide groove is perpendicular to the moving direction of the clamping jaw 203, the spiral groove at the top of the butterfly gear is engaged with the guide groove, and when the butterfly gear rotates, the rotating spiral groove drives the guide groove to move with the spiral groove, so that the clamping jaw 203 moves in the mounting groove 202, and the bevel gear in the first mounting hole is driven by the wrench to drive the butterfly gear meshing therewith to rotate forward and reverse, so as to realize the forward and reverse movement of the clamping jaw 203, and the clamping jaw 203 clamps the part 8 to be processed when moving forward, and releases the part 8 to be processed when moving reversely. In this embodiment, the guide groove has a certain curvature to match the shape of the spiral groove.

[0056] In some other embodiments, the chuck assembly 2 may also be a hydraulic chuck.

[0057] In one embodiment, Figure 2 As shown, the fixture further includes a position detection component 4 fixedly mounted on the base 1 , and the position detection component 4 is electrically connected to the claw 203 .

[0058] Specifically, in this embodiment, the position detection assembly 4 is fixedly mounted on the base 1 and is located on the moving path of the claw 203 .

[0059] The utility model can detect whether the movement of the clamping claw 203 is in place and whether the workpiece 8 to be processed is clamped or loosened by arranging the detection component.

[0060] In one embodiment, the position detection component 4 includes a first sensor and a second sensor. The first sensor is fixedly mounted on the base 1 and is located on the path where the claw 203 moves toward the part to be processed 8. The second sensor is fixedly mounted on the base 1 and is located on the path where the claw 203 moves away from the part to be processed 8.

[0061] Specifically, in this embodiment, the first sensor and the second sensor adopt proximity switch sensors. The first sensor is set at the position where the claw 203 clamps the part 8 to be processed, and the second sensor is set at the position where the claw 203 releases the part 8 to be processed. When the part 8 to be processed needs to be clamped, the driving component drives the claw 203 to move toward the inner wall of the part 8 to be processed. When it moves to the first sensor, the first sensor is electrically connected to the claw 203 and sends a "tightened in place" signal to ensure that the part 8 to be processed remains stable during the processing process; when it is necessary to release the part 8 to be processed, the driving component drives the claw 203 to move away from the inner wall of the part 8 to be processed. When it moves to the second sensor, the second sensor is electrically connected to the claw 203 and sends a "released in place" signal to facilitate the operator or the machine gripper to grab the part.

[0062] The utility model is convenient for detecting whether the clamping claw 203 clamps the part 8 to be processed by setting a first sensor, and is convenient for detecting whether the clamping claw 203 loosens the part 8 to be processed by setting a second sensor, so that the operator can perform a processing procedure on the installed part 8 to be processed, or remove the processed part.

[0063] In one embodiment, Figures 1 to 5 As shown, the limiting assembly 5 includes a rotating driver 501 and a pressure plate 502. The rotating driver 501 is fixedly mounted on the base 1. A driving end is provided on the top of the rotating driver 501. The pressure plate 502 is connected to the driving end of the rotating driver 501. The bottom end of the pressure plate 502 is suitable for abutting against the part 8 to be processed.

[0064] Specifically, in this embodiment, the angle between the three rotating drivers 501 is 120°, and they are respectively fixedly installed on the base 1. The three rotating drivers 501 are located on the outside of the part 8 to be processed. The pressure plate 502 is connected to the driving end at the top of the rotating driver 501. The rotating driver 501 can rotate the pressure plate 502 by a certain angle. When the pressure plate 502 rotates to above the part 8 to be processed, the pressure plate 502 presses the upper end surface of the part 8 to be processed to limit the vertical displacement of the part 8 to be processed due to vibration and the like during the processing.

[0065] The utility model can press the part 8 to be processed by rotating the pressing plate 502 through the rotating driver 501, thereby preventing the part 8 to be processed from being vertically displaced during processing, thereby ensuring the accuracy of the processed part.

[0066] In one embodiment, the rotary driver 501 includes a cylinder, a piston rod and an end cover. The cylinder is fixedly mounted on the base 1. One end of the cylinder is an opening. The cylinder is provided with an oil inlet and an oil outlet. The piston rod is provided with a threaded groove, which is arranged inside the cylinder. The threaded groove connects the oil inlet and the oil outlet. The pressure plate 502 is fixedly mounted on the end of the piston rod away from the threaded groove. The end cover is arranged on the opening. The end cover is provided with a second mounting hole. One end of the piston rod mounting pressure plate 502 extends out of the second mounting hole. A rotary seal and a guide ring are used to support the piston rod and the end cover. A rotary encoder for feedback is provided at the tail of the piston rod.

[0067] In one embodiment, the fixture further includes a protective member 6 , which is covered on the chuck body 201 and is detachably connected to the base 1 .

[0068] Specifically, in this embodiment, the protective member 6 is approximately in the shape of a triangular prism, with a cavity inside and an open bottom. The three edges of the protective member 6 are open. When the protective member 6 is covered on the chuck body 201, the chuck body 201 can be covered in the cavity, and the three claws 203 are respectively exposed at the edges of the protective member 6.

[0069] The utility model can prevent iron cuttings generated during processing from entering the chuck assembly 2 by arranging the protection member 6 .

[0070] In one embodiment, Figures 1 to 5 As shown, the fixture further includes a chip cleaning assembly 7, which is fixedly mounted on the base 1. The chip cleaning assembly 7 is provided with a plurality of water outlets, which face the part 8 to be processed.

[0071] Specifically, in this embodiment, the chip cleaning assembly 7 is fixedly installed on the side of the base 1. The chip cleaning assembly 7 includes a tube body and a fixing part. The fixing part fixes the tube body on the side of the base 1. A plurality of water outlets are provided on the tube body. The water outlet direction of the water outlet is toward the part to be processed 8. The tube body is suitable for being connected to a high-pressure water pump. When processing the part to be processed 8, high-pressure water is sprayed toward the part to be processed 8 through the water outlet hole so as to flush the iron chips generated by the part to be processed 8 during the turning process and other processes away from the chuck assembly 2.

[0072] The utility model provides a chip cleaning component 7, which can flush the iron cuttings generated during processing away from the chuck component 2, thereby achieving a chip cleaning effect.

[0073] When the tooling fixture provided by the utility model is used, the turned excavator driving wheel is first placed on the support 3, and an air path is provided on the support 3 and the base 1. The airtight detection component determines whether the excavator driving wheel is in place by detecting the airtightness between the bottom surface of the excavator driving wheel and the support 3. If the positioning surface at the bottom of the excavator driving force fits tightly with the top of the support 3, the airtight detection component determines that it is qualified, and the chuck assembly 2 proceeds to the next step, otherwise an airtight abnormality alarm will be issued.

[0074] After the air tightness test is passed, the driving component drives the three claws 203 to tighten the inner wall of the excavator drive wheel positioning hole, the position detection component 4 contacts the three claws 203, and the first sensor determines that the three claws 203 are clamped properly, and the tooling fixture proceeds to the next step, otherwise the first sensor will issue a clamping abnormality alarm.

[0075] After the inner hole of the excavator driving wheel is clamped in place, the rotary driver 501 rotates to press the pressing plate 502 against the upper end surface of the excavator driving wheel for vertical fixation.

[0076] After the drilling device has finished processing the excavator drive wheel, the rotary driver 501 is reset, the pressure plate 502 is released, and the drive assembly drives the three claws 203 to reset. After the second sensor detects that the three claws 203 are released and qualified, the excavator drive wheel that has been processed is grabbed manually or by a robot.

[0077] During the processing of the driving force of the excavator, the chip cleaning component 7 cleans the iron chips or debris on the upper end surface of the base 1 and the surface of the support member 3 by high-pressure water flushing. The protective member 6 can protect the chuck assembly 2 from iron chips and water stains.

[0078] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A fixture, characterized in that: include: Base (1); A chuck assembly (2) is fixedly mounted on the base (1) and is suitable for clamping a part to be processed (8); A plurality of limit assemblies (5) are fixedly mounted on the base (1), wherein the limit assemblies (5) are arranged at circumferential positions of the chuck assembly (2) and are suitable for limiting the vertical displacement of the part to be processed (8); A plurality of support members (3) detachably mounted on the base (1), wherein the support members (3) are suitable for supporting a part (8) to be processed; An airtightness detection component is arranged on the top of the support member (3).

2. The fixture according to claim 1, characterized in that: The airtight detection component comprises: A pipeline is arranged on the base (1) and the support (3), the pipeline connects the base (1) and the support (3), one end of the pipeline is suitable for abutting against the part to be processed (8), and the other end is suitable for connecting with an air source; A detection member is arranged on the top of the support member (3).

3. The fixture according to claim 1 or 2, characterized in that: The chuck assembly (2) comprises: A chuck body (201) is fixedly mounted on the base (1), and a top of the chuck body (201) is provided with a plurality of mounting grooves (202) arranged in a radial direction; A plurality of claws (203) are movably mounted in the mounting grooves (202) correspondingly; A driving assembly is arranged inside the chuck body (201), and the driving assembly is movably connected to the clamping claws (203), and is suitable for driving a plurality of the clamping claws (203) to move along the mounting groove (202).

4. The fixture according to claim 3, characterized in that: The bottom of the clamping claw (203) is provided with a guide groove perpendicular to the moving direction of the clamping claw (203), the side wall of the chuck body (201) is provided with a first mounting hole, and the driving assembly comprises: A butterfly gear, wherein a spiral groove is provided on the top of the butterfly gear, the spiral groove is engaged with the guide groove, and a first tooth portion is provided on the bottom of the butterfly gear arranged in a radial direction; A bevel gear is provided with a second tooth portion, the second tooth portion is meshed with the first tooth portion, the bevel gear is located in the chuck body (201), and one end of the bevel gear is installed in the first installation hole.

5. The fixture according to claim 4, characterized in that: Also includes: A position detection component (4) is fixedly mounted on the base (1), and the position detection component (4) is electrically connected to the claw (203).

6. The fixture according to claim 5, characterized in that: The position detection component (4) comprises: A first sensor, fixedly mounted on the base (1), located on a path where the claw (203) moves toward the part to be processed (8); The second sensor is fixedly mounted on the base (1) and is located on a path where the clamping claw (203) moves away from the part to be processed (8).

7. The fixture according to claim 5 or 6, characterized in that: The limiting component (5) comprises: A rotary driver (501) is fixedly mounted on the base (1), and a driving end is provided on the top of the rotary driver (501); A pressing plate (502) is connected to the driving end of the rotary driver (501), and the bottom end of the pressing plate (502) is suitable for abutting against the part to be processed (8).

8. The fixture according to claim 7, characterized in that: The rotary driver (501) comprises: A cylinder body, fixedly mounted on the base (1), one end of the cylinder body being open, and an oil inlet hole and an oil outlet hole being provided on the cylinder body; A piston rod, wherein a thread groove is provided on the piston rod, wherein the thread groove is arranged inside the cylinder, wherein the thread groove communicates with the oil inlet hole and the oil outlet hole, and wherein the pressure plate (502) is fixedly mounted on an end of the piston rod away from the thread groove; An end cover is arranged on the opening, and a second mounting hole is provided on the end cover, and one end of the piston rod for mounting the pressure plate (502) extends out of the second mounting hole.

9. The fixture according to claim 8, characterized in that: Also includes: A protective member (6) is disposed on the chuck body (201) and is detachably connected to the base (1).

10. The fixture according to claim 9, characterized in that: Also includes: A chip cleaning component (7) is fixedly mounted on the base (1), and a plurality of water outlet holes are provided on the chip cleaning component (7), and the water outlet holes face the part to be processed (8).

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