CN211761055U - An indexable quick clamping device - Google Patents

Abstract

The utility model discloses an indexable quick clamping device: comprising a support, a positioning pin, a mounting plate, a rotary positioning mechanism, a quick clamping mechanism and a linkage mechanism; the mounting plate is fixed on a transmission shaft of the rotary positioning mechanism, and the transmission The shaft is rotated and installed on the support; the positioning pin is fixed on the installation plate; the quick clamping mechanism includes an operating rod, a connecting rod, a short shaft and a long shaft. The shaft is rotatably connected with the connecting rod; a pressure plate connecting rod is vertically arranged on the connecting rod, and a pressure plate is arranged on the pressure plate connecting rod; the linkage mechanism includes a linkage frame, and the linkage frame is slidably matched with the mounting plate; the linkage frame is provided with a guide chute , the long shaft slides in the guide chute, and when the long shaft slides to the extension line of the connecting rod, the pressure plate presses the air compressor casing parts. The utility model utilizes the positioning pin to quickly locate the workpiece, and utilizes the quick clamping mechanism to clamp the workpiece, which can quickly and accurately compress the workpiece, thereby improving the assembly efficiency.

Description

An indexable quick clamping device

technical field

The utility model relates to the technical field of assembly equipment, in particular to an indexable quick clamping device.

Background technique

In the field of mechanical production and processing, "tooling" is the production process equipment, which is a general term for various tools used in the manufacturing process. Tooling is divided into special tooling, general tooling, and standard tooling (similar to standard parts). The purpose of using process equipment is that some are necessary to manufacture products, some are to ensure the quality of processing, some are to improve labor productivity, and some are to improve labor conditions. An air compressor is a device used to compress gas. In order to ensure the product quality of the air compressor, improve the accuracy of the installation process, save manpower and material resources, and improve production efficiency, the installation process and the structure of the installation device should be simplified as much as possible. The assembly of the air compressor includes two mutually perpendicular cylinder parts, and the casing part needs to be fixed during assembly. In the prior art, the steps of fixing the air compressor are cumbersome, which not only affects the assembly efficiency, but also the clamping effect is not ideal. .

Utility model content

Aiming at the technical problems existing in the prior art, the purpose of the present invention is to provide an indexable quick clamping device, which can quickly and accurately compress the workpiece, thereby improving the assembly efficiency.

The purpose of the present utility model is achieved through the following technical solutions: to provide an indexable quick clamping device, which can quickly and accurately compress the workpiece, thereby improving the efficiency of assembly.

The purpose of the present invention is achieved through the following technical solutions: including a support, a positioning pin, a mounting plate, a rotary positioning mechanism, a quick clamping mechanism and a linkage mechanism;

The mounting plate is fixed on the transmission shaft of the rotation positioning mechanism, and the transmission shaft is rotatably mounted on the support;

The locating pin is fixed on the mounting plate, and the locating pin is used for locating the assembly station of the air compressor casing part;

The quick clamping mechanism includes an operating rod, a connecting rod, a short shaft and a long shaft, the operating rod is rotatably mounted on the mounting plate through the short shaft, and the operating rod is connected with the long shaft through the long shaft. The connecting rod is connected in rotation; a pressure plate connecting rod is vertically arranged on the connecting rod, and a pressure plate used for clamping the casing parts of the air compressor is arranged on the pressure plate connecting rod;

The linkage mechanism includes a linkage frame, the linkage frame is slidably matched with the installation plate, and the linkage frame slides along the axial direction of the installation plate; the linkage frame is provided with a frame extending in the radial direction of the installation plate The guide chute, the long shaft slides in the guide chute, and when the long shaft slides on the extension line of the connecting rod, the pressure plate compresses the air compressor casing components.

In the above-mentioned indexable quick clamping device, the connecting rod is provided with a guide rod vertically, and the linkage frame is provided with a guide hole which is slidably matched with the guide rod.

In the above-mentioned indexable quick clamping device, the pressure plate is fixed to the pressure plate connecting rod by a fine adjustment screw, the pressure plate is spherically connected with the fine adjustment screw, and the fine adjustment screw is connected with the pressure plate connecting rod Threaded connection.

In the above-mentioned indexable quick clamping device, a plurality of guide rails are arranged on the side wall of the mounting plate, the guide rails are fixed to the mounting plate by screws, and ball sliders are slidably arranged on the guide rails, and the linkage The two ends of the frame are respectively fixed to the corresponding ball sliders;

The ends of the linkage frame are all provided with dovetail heads, and the ball sliding block is provided with a dovetail groove fixed with the dovetail head mortise and tenon.

In the above-mentioned indexable quick clamping device, both sides of the ball slider are provided with the dovetail grooves, which are used to link the two adjacent linkage frames.

In the above-mentioned indexable quick clamping device, the rotation positioning mechanism further comprises a locking member for locking the rotation of the transmission shaft.

In the above-mentioned indexable quick clamping device, the end of the transmission shaft is fixed with a transmission disc, the transmission disc is provided with a transmission disc perforation, and the support is provided with a number of positioning positions opposite to the transmission disc perforation hole;

The locking member is a positioning bolt, and the positioning bolt penetrates through the through hole of the transmission disc and the positioning hole in sequence to lock the transmission shaft to the support.

In the above-mentioned indexable quick clamping device, the support comprises a bearing seat, an installation chassis and a reinforcing rib plate, and the bearing seat is fixed above the installation chassis;

The rotation positioning mechanism is rotatably mounted on the bearing seat, and the reinforcing rib plates are respectively fixedly connected with the bearing seat and the mounting chassis.

In the above-mentioned indexable quick clamping device, the bearing seat is provided with a transmission shaft installation hole, and the transmission shaft is rotatably installed in the transmission shaft installation hole through a bearing;

The outer ring of the bearing is in interference fit with the transmission shaft mounting hole, and the inner ring of the bearing is in interference fit with the transmission shaft;

The transmission shaft mounting hole is also provided with a limit boss and an elastic retaining ring that abut against the outer ring of the bearing. side to limit the axial shoveling of the bearing;

A sleeve is also sleeved on the outer side of the transmission shaft, and the sleeve is abutted against the inner ring of the bearing to limit the axial movement of the bearing.

In the above-mentioned indexable quick clamping device, the mounting plate is provided with a fixing hole, and the transmission shaft is in an interference fit with the fixing hole;

The drive shaft is provided with a boss for abutting against the first end of the mounting plate, the mounting plate is fixedly connected to the drive shaft through a washer, a quick-change washer and a tightening screw, and the quick-change washer is connected to the drive shaft. The second ends of the mounting discs abut against each other.

Compared with the prior art, the utility model has the following advantages and effects:

The utility model utilizes the positioning pin to quickly locate, utilizes the quick clamping mechanism to clamp the workpiece, and utilizes the rotary positioning mechanism to convert the assembly station. Thus, the assembly efficiency is improved.

Description of drawings

Fig. 1 is the axonometric view of the indexable quick clamping device of the present utility model;

Fig. 2 is the front view of the indexable quick clamping device of the present invention;

Fig. 3 is the internal sectional view of Fig. 2;

Fig. 4 is a partial enlarged view of position I in Fig. 3;

Fig. 5 is the structural schematic diagram of the support in the indexable quick clamping device of the present invention;

Fig. 6 is the structural schematic diagram of the connecting rod in the indexable quick clamping device of the present invention;

FIG. 7 is a schematic diagram of the structure of the linkage frame in the indexable quick clamping device of the present invention.

Description of drawings: 1. Support; 10. Positioning hole; 11. Bearing seat; 110. Transmission shaft mounting hole; 112. Limiting boss; 12. Mounting chassis; 13. Reinforcing rib plate;

2. Positioning pin;

3. Mounting plate; 31. Fixing hole;

4. Rotating positioning mechanism; 41. Transmission shaft; 42. Bearing; 43. Retaining ring; 44. Sleeve; 45. Quick-change washer; 46. Fastening screw; 47. Washer; Disk perforation; 49. Positioning pin;

5. Quick clamping mechanism; 51, operating rod; 52, connecting rod; 521, guide rod; 53, short shaft; 54, long shaft; 55, fine adjustment screw; 56, pressure plate; 57, pressure plate connecting rod;

6, linkage mechanism; 61, guide rail; 62, ball slider; 63, linkage frame; 632, guide chute; 631, dovetail head; 633, guide hole; 64, screw;

7. Air compressor casing parts.

Detailed ways

The present utility model will be described in further detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present utility model are not limited thereto.

As shown in Figures 1-3, an indexable quick clamping device of the present invention includes a support 1, a positioning pin 2, a mounting plate 3, a rotary positioning mechanism 4, a quick clamping mechanism 5 and a linkage mechanism 6,

The mounting plate 3 is fixed on the transmission shaft 41 of the rotary positioning mechanism 4 , and the transmission shaft 41 is rotatably mounted on the support 1 . The drive shaft 41 drives the mounting plate 3 to rotate on the support 1 .

The positioning pin 2 is fixed on the mounting plate 3 , and the positioning pin 2 is used for positioning the assembly station of the air compressor casing part 7 . There are multiple positioning pins 2, the number of positioning pins 2 is consistent with the number of assembly stations of the air compressor casing part 7, and the positioning pins 2 are opposite to the assembly stations, and the positioning pins 2 are used to quickly locate the air compressor. Assembly station of casing part 7. After the positioning is completed, it is clamped by the quick clamping mechanism 5 . In this embodiment, there are three positioning pins 2 in total, and the three positioning pins 2 are evenly distributed along the circumferential direction of the mounting plate 3 . The installation position of the air compressor casing part 7 is quickly positioned by three positioning pins, the structure is simple, the operation is convenient, the installation process is simplified, the position of the air compressor can be accurately positioned, and the assembly accuracy is improved. At the same time, it provides a positioning function and also provides a longitudinal support force to the air compressor casing part 7 .

The quick clamping mechanism 5 includes an operating rod 51 , a connecting rod 52 , a short shaft 53 and a long shaft 54 , the operating rod 51 is rotated and installed on the mounting plate 3 through the short shaft 53 , and the operating rod 51 is rotated with the connecting rod 52 through the long shaft 54 Connection; a pressure plate connecting rod 57 is vertically arranged on the connecting rod 52 , and a pressure plate 56 for clamping the air compressor casing part 7 is arranged on the pressure plate connecting rod 57 .

The linkage mechanism 6 includes a linkage frame 63, the linkage frame 63 is slidably matched with the installation plate 3, and the linkage frame 63 slides along the axial direction of the installation plate 3; The long shaft 54 slides in the guide chute 632 , and when the long shaft 54 slides on the extension line of the connecting rod 52 , the pressing plate 56 presses the air compressor casing part 7 . In order to conveniently control the sliding of the long shaft 54 along the guide chute 632 , a handle is provided on the operating rod 51 , and the operating rod 51 is controlled to rotate around the short shaft 53 through the handle. The long shaft 54 slides along the guide chute 632, and the long shaft 54 drives the linkage frame 63 to slide along the side wall of the mounting plate 3 during the sliding process of the long shaft 54 along the guide chute 632, while the long shaft 54 and the connecting rod 52 are fixed, and the linkage The movement of 63 drives the connecting rod 52 to move, and then drives the pressure plate 56 on the connecting rod 52 to move, so as to realize the pressing of the air compressor casing part 7 . Specifically, when the long shaft 54 moves along the guide chute 632 in a direction close to the mounting plate 3, since one end of the operating rod 51 is hingedly connected to the mounting plate 3 through the short shaft 53, the long shaft 54 can only drive The linkage frame 63 moves toward the support 1 . At this time, the long shaft 54 drives the connecting rod 52 to move toward the support 1 on the one hand, and drives the connecting rod 52 to move toward the mounting plate 3 on the other hand. Since the pressure plate connecting rod 57 is vertically defined on the connecting rod 52 , and the pressure plate connecting rod 57 extends to the position where the mounting plate 3 is located, the pressure plate 56 on the pressure plate connecting rod 57 will move toward the connecting rod 52 . Move in the direction close to the mounting plate 3 . When the long shaft 54 rotates to the extension line of the connecting rod 52, the short shaft 53 is also located on the extension line of the connecting rod 52, and the pressure plate 56 is attached to the air compressor casing part 7 to compress the air compressor. Press casing part 7. The quick clamping mechanism 5 actually used in the embodiment of the present invention uses the principle of the double rocker mechanism in the plane four-bar mechanism to clamp the workpiece, which is simple and convenient to operate and has a large clamping force.

During use, first move the long shaft 54 along the guide chute 632 in a direction away from the mounting plate 3 , and at this time, the pressure plate 56 is opened with the movement of the connecting rod 52 . The assembly station of the air compressor casing part 7 is positioned on the corresponding positioning pin 2 so as to realize the rapid positioning of the air compressor casing part 7 . Then turn the handle on the operating rod 51 to make the operating rod 51 rotate around the short axis 53 in the direction close to the mounting plate 3 , while the long axis 54 slides along the guide chute 632 along the operating rod 51 to the direction close to the mounting plate 3 , the connecting rod 52 moves with the movement of the long shaft 54, and the pressure plate 56 fixed on the pressure plate connecting rod 57 moves with the connecting rod 52 in the direction of approaching the mounting plate 3, thereby pressing the air compressor casing part 7 onto installation disk 3.

In order to prevent the connecting rod 52 from turning over around the long axis 54 when the operating rod 51 rotates around the short axis 53 in the direction close to the mounting plate 3 , a guide rod 521 is vertically arranged on the connecting rod 52 , and correspondingly the linkage frame 63 A guide hole 633 slidably matched with the guide rod 521 is provided thereon. The guide rod 521 slides in the guide hole 633, so that the connecting rod 52 can only move closer to or away from the support 1 in the horizontal direction along with the long axis 54, or the connecting rod 52 can be moved closer to or away from the installation in the up and down direction The movement of the disk 3 limits the turning of the connecting rod 52 around the long axis 54 .

In order to further improve the clamping strength of the air compressor casing part 7 , in this embodiment, a fine adjustment mechanism is also provided on the pressure plate connecting rod 57 , the fine adjustment mechanism is a fine adjustment screw 55 , and the pressure plate 56 is fixed by the fine adjustment screw 55 On the pressure plate connecting rod 57 , the fine adjustment screw 55 is threadedly connected with the pressure plate connecting rod 57 . By adjusting the position of the fine adjustment screw on the pressure plate connecting rod 57, the pressing force of the pressure plate on the air compressor casing part 7 can be adjusted. Further, the pressure plate 56 and the fine-tuning screw 55 are spherically connected, and the clamping force generated by the pressure plate 56 can be fine-tuned through the spherical connection of the fine-tuning screw 55. The air compressor casing part 7 has an arbitrarily inclined curved surface, which facilitates the pressing and fixing of the air compressor casing part 7 by the pressure plate 56 .

Specifically, a plurality of guide rails 61 are provided on the side wall of the mounting plate 3. In this embodiment, each guide rail 61 is fixed to the mounting plate 3 by two screws 64, and a ball slider 62 is slidably arranged on the corresponding guide rail 61. The ball sliding block 62 is slidably fitted with the guide rail 61 . Both ends of the linkage frame 63 are respectively fixed to the corresponding ball sliders 62 , and the linkage frame 63 is slidably engaged with the mounting plate 3 through the sliding cooperation of the ball sliders 62 and the guide rails 61 . In order to facilitate the installation and fixation of the linkage frame 63 and the ball sliding block 62, both ends of the linkage frame 63 are provided with dovetail heads 631, and the ball sliding block 62 is provided with dovetail grooves that are mortally fixed with the dovetail heads 631. . The linkage frame 63 is installed and fixed to the ball sliding block 62 through the cooperation of the dovetail groove and the dovetail head 631 . In this embodiment, both ends of each linkage frame 63 slide on the guide rail 61 through the ball sliding block 62 . In this embodiment, a plurality of linkage mechanisms 6 are provided, that is, a plurality of linkage frames 63 are provided. Each linkage frame 63 is provided with a corresponding quick pressing mechanism 5. Specifically, in this embodiment, three linkage frames are provided. The linkage frame 63 , the three linkage frames 63 are all slid on the mounting plate 3 , and the three linkage frames 63 are arranged along the circumferential direction of the mounting plate 3 . In order to realize the linkage of the three linkage frames 63, dovetail grooves are provided on both sides of the ball slider 62 to link the adjacent two linkage frames 63. That is, the two linkage frames 63 share one ball slider 62 to realize the linkage of the two linkage frames 63. In this embodiment, the three ball sliders 62 are used to connect the three linkage frames 63, thereby realizing the The linkage of three linkage frames 63 , wherein every two adjacent linkage frames 63 are connected by a linkage ball slider 62 . The utility model adopts the cooperation of the ball sliding block 62 and the guide rail 61 to realize the linear movement of the linkage mechanism 6, and through the linkage movement of the three linkage mechanisms 6, so that the three clamping mechanisms 5 act together, making the operation more simple and labor-saving, Greatly improve production efficiency and save manpower.

The rotation positioning mechanism 4 also includes a locking member for locking the rotation of the transmission shaft 41 . In this embodiment, the locking member is a positioning pin 49. Specifically, a transmission disc 48 is fixed on the end of the transmission shaft 41, and the transmission disc 48 is provided with a transmission disc through hole 480. The positioning hole 10 is opposite to the through hole 480 ; the positioning pin 49 penetrates through the through hole 480 of the transmission disc and the positioning hole 10 in sequence to lock the transmission shaft 41 to the support 1 . Specifically, the transmission disc 48 is provided with a transmission disc through hole, and the transmission shaft 41 is perfectly fitted in the transmission disc through hole. The end of the transmission shaft 41 is provided with a fastening screw 46, the fastening screw 46 is fixed on the transmission shaft 41, and a quick-change washer 45 and a washer 47 are also provided between the nut of the fastening screw 46 and the transmission disc 48. One end of the washer 45 is abutted against the drive disc 48 , the second end of the quick-change washer 45 is abutted against the first end of the washer 47 , and the second end of the washer 47 is abutted against the nut of the fastening screw 46 . The drive disc 48 is fixed on the drive shaft 41 through the cooperation of the tightening screw 46, the quick-change washer 45 and the washer 47, which can effectively limit the axial movement of the drive disc 48. The use of the quick-change washer 45 enables the mounting plate 3 to be removed by simply loosening the fastening screws 46 during disassembly and assembly.

The support 1 is used to support the entire air compressor assembly device. The support 1 includes a bearing seat 11, an installation chassis 12 and a reinforcing rib plate 13. The bearing seat 11 is fixed above the installation chassis 12; the rotary positioning mechanism 4 is rotated and installed on the On the bearing seat 11 , the reinforcing rib plate 13 is welded and fixed to the bearing seat 11 and the mounting chassis 12 respectively. The reinforcing ribs 13 can be arranged in the shape of a triangular plate to increase the supporting strength, which can further enhance the stability between the bearing seat 11 and the mounting chassis 12 . The two right-angled sides of the triangular plate are respectively connected and fixed with the bearing seat 11 and the mounting chassis 12 . The installation chassis 12 is provided with notches, and the notches are used to limit and fix the installation chassis 12 and the workbench; The notch and the bump on the worktable can cooperate with each other, thereby realizing the stable limit fixation between the entire air compressor assembly device and the worktable.

The bearing seat 11 is provided with a transmission shaft installation hole 110, and the transmission shaft 41 is rotated and installed in the transmission shaft installation hole 110 through the bearing 42; the outer ring of the bearing 42 is in an interference fit with the transmission shaft installation hole 110, and the inner ring of the bearing 42 Shaft 41 has an interference fit. The number of the bearings 42 may be set in plural, and the plural bearings 42 are arranged side by side.

The transmission shaft mounting hole 110 is also provided with a limit boss 112 and an elastic retaining ring 43 that abut against the outer ring of the bearing 42. The limit boss 112 and the elastic retaining ring 43 are respectively arranged on both sides of the outer ring of the bearing 42 to limit The bearing 42 moves axially; the outer side of the transmission shaft 41 is also sleeved with a sleeve 44 , the first end of the sleeve 44 abuts against the inner ring of the bearing 42 and the second end of the sleeve 44 abuts against the rotating disk 48 , the sleeve 44 It is used to limit the axial slack of the bearing 42 , and at the same time, the sleeve 44 also acts to limit the axial slack of the rotating disk 48 .

The mounting plate 3 is provided with a fixing hole 31, the transmission shaft 41 is in an interference fit with the fixing hole 31, and the transmission shaft 41 is provided with a boss for abutting against the first end of the mounting plate 3. The mounting plate 3 passes through a washer 47, a quick changer The washer 45 and the tightening screw 46 are fixedly connected with the transmission shaft 41 , and the quick-change washer 45 abuts against the second end of the mounting plate 3 .

The working process of the above indexable quick clamping device is as follows:

The first step is to position the air compressor casing part 7 to the mounting plate 3 and clamp it; the second step is to adjust the rotating plate 48 and the positioning pin 49 to the next assembly after the cylinder on one side of the air compressor casing part 7 is assembled. Station.

details as follows:

Step 1: Position the air compressor casing part 7 to the mounting plate 3 and clamp it.

1) Toggle the operating lever 51 to open the three pressure plates 56;

2) Align the three holes on the rear casing in the air compressor casing part 7 with the three positioning pins 2 on the mounting plate 12 to complete the assembly and positioning;

3) Press down the operating rod 51 to make the three pressure plates 56 press the air compressor casing part 7 at the same time to complete the assembly and clamping;

4) Carry out the assembly work of the cylinder piston on the side of the air compressor casing part 7.

Step 2: When the cylinder on one side of the air compressor casing part 7 is assembled, adjust the rotating plate 48 and the positioning pin 49 to the next assembly station.

1) When the air cylinder on one side of the air compressor is assembled, pull out the positioning pin 49 from the positioning hole 112 of the bearing seat 11 to the position where the rotating plate 48 can rotate;

2) Rotate the rotary disk 48 to move the air compressor casing part 7 to the next assembly station;

3) Reinsert the positioning pins 49 into the positioning holes 112 of the bearing housing 11 to complete the switching of the assembly stations.

The above-mentioned embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned embodiments, and any other changes, modifications, and substitutions made without departing from the spirit and principle of the present utility model , combination and simplification, all should be equivalent replacement methods, which are all included in the protection scope of the present invention.

Claims (10)

1. an indexable quick clamping device is characterized in that: Including support, positioning pin, mounting plate, rotary positioning mechanism, quick clamping mechanism and linkage mechanism; The mounting plate is fixed on the transmission shaft of the rotation positioning mechanism, and the transmission shaft is rotatably mounted on the support; The locating pin is fixed on the mounting plate, and the locating pin is used for locating the assembly station of the air compressor casing part; The quick clamping mechanism includes an operating rod, a connecting rod, a short shaft and a long shaft, the operating rod is rotatably mounted on the mounting plate through the short shaft, and the operating rod is connected with the long shaft through the long shaft. The connecting rod is connected in rotation; a pressure plate connecting rod is vertically arranged on the connecting rod, and a pressure plate used for clamping the casing parts of the air compressor is arranged on the pressure plate connecting rod; The linkage mechanism includes a linkage frame, the linkage frame is slidably matched with the installation plate, and the linkage frame slides along the axial direction of the installation plate; the linkage frame is provided with a frame extending in the radial direction of the installation plate The guide chute, the long shaft slides in the guide chute, and when the long shaft slides on the extension line of the connecting rod, the pressure plate compresses the air compressor casing components. 2. A kind of indexable quick clamping device according to claim 1, is characterized in that: A guide rod is vertically arranged on the connecting rod, and a guide hole slidingly matched with the guide rod is arranged on the linkage frame. 3. A kind of indexable quick clamping device according to claim 1, is characterized in that: The pressure plate is fixed to the pressure plate connecting rod by a fine adjustment screw, the pressure plate is spherically connected with the fine adjustment screw, and the fine adjustment screw is threadedly connected with the pressure plate connecting rod. 4. A kind of indexable quick clamping device according to claim 1, is characterized in that: A plurality of guide rails are arranged on the side wall of the installation plate, the guide rails are fixed to the installation plate by screws, ball sliders are slidably arranged on the guide rails, and the two ends of the linkage frame are respectively fixed to their corresponding on the ball slider; The ends of the linkage frame are all provided with dovetail heads, and the ball sliding block is provided with a dovetail groove fixed with the dovetail head mortise and tenon. 5 . The indexable quick clamping device according to claim 4 , wherein the dovetail grooves are provided on both sides of the ball slider to link two adjacent linkages. 6 . shelf. 6 . The indexable quick clamping device according to claim 1 , wherein the rotation positioning mechanism further comprises a locking member for locking the rotation of the transmission shaft. 7 . 7 . The indexable quick clamping device according to claim 6 , wherein the end of the transmission shaft is fixed with a transmission disc, the transmission disc is provided with a transmission disc perforation, and the support There are several positioning holes opposite to the perforations of the drive disc; The locking member is a positioning bolt, and the positioning bolt penetrates through the through hole of the transmission disc and the positioning hole in sequence to lock the transmission shaft to the support. 8. A kind of indexable quick clamping device according to claim 1 is characterized in that: The support includes a bearing seat, an installation chassis and a reinforcing rib plate, and the bearing seat is fixed above the installation chassis; The rotary positioning mechanism is rotatably mounted on the bearing seat, and the reinforcing rib plates are respectively fixedly connected with the bearing seat and the mounting chassis. 9. A kind of indexable quick clamping device according to claim 8, is characterized in that: The bearing seat is provided with a transmission shaft installation hole, and the transmission shaft is rotatably installed in the transmission shaft installation hole through a bearing; The outer ring of the bearing is in interference fit with the transmission shaft mounting hole, and the inner ring of the bearing is in interference fit with the transmission shaft; The transmission shaft mounting hole is also provided with a limit boss and an elastic retaining ring that abut against the outer ring of the bearing. side to limit axial shoveling of the bearing; A sleeve is also sleeved on the outer side of the transmission shaft, and the sleeve is abutted against the inner ring of the bearing to limit the axial movement of the bearing. 10. A kind of indexable quick clamping device according to claim 1, is characterized in that: The mounting plate is provided with a fixing hole, and the transmission shaft is in interference fit with the fixing hole; The drive shaft is provided with a boss for abutting against the first end of the mounting plate, the mounting plate is fixedly connected to the drive shaft through a washer, a quick-change washer and a tightening screw, and the quick-change washer is connected to the drive shaft. The second ends of the mounting discs abut against each other.

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