Clamping device for machining inner radian of automobile yoke

Abstract

The utility model relates to a clamping device for machining the inner radian of an automobile yoke, and belongs to the technical field of automobile yoke machining equipment. The clamping device for machining the inner radian of the automobile yoke comprises a limiting outer cylinder, a clamping inner cylinder, a rack, a transmission shaft, a rotating pipe shaft, a driving motor and a transmission belt. The rack is provided with a rotating pipe shaft through a bearing; one end of the rotating pipe shaft is provided with a transmission wheel; a driving motor is arranged on the rack below the transmission wheel; the driving motor is connected with the transmission wheel through a transmission belt; the other end of the rotating pipe shaft extends to the outer end of the rack and then is fixedly provided with a limiting outer cylinder; and a clamping inner cylinder is arranged in the limiting outer cylinder. According to the clamping device for machining the inner radian of the automobile yoke, clamping of a workpiece can be completed in a holding mode, so that the problem that clamping is not stable when an existing lathe completes assembly of the yoke through a three-jaw chuck is solved, and the clamping device is particularly suitable for machining the inner radian of the automobile yoke.

Description

Technical Field

[0001] The utility model relates to a clamping device for processing the inner curvature of an automobile yoke, and belongs to the technical field of automobile yoke processing equipment. Background Art

[0002] The automobile yoke is an integrated structure; the front end of the base 1 of the automobile yoke is a flat structure; the rear end of the base 1 is a curved structure; the inner arc structure 2 is symmetrically arranged inside the fork of the automobile yoke. At present, the inner arc structure 2 is cut using an ordinary lathe. Although the existing production method meets the use needs of the inner arc processing of the automobile yoke to a certain extent, due to the special-shaped structure of the automobile yoke, it is very easy to cause processing failure or workpiece flying accidents caused by unstable clamping when the ordinary lathe uses a three-jaw chuck to clamp the automobile yoke. Therefore, it is necessary to develop a special equipment to solve the above problems existing in the existing automobile yoke inner arc processing. Summary of the invention

[0003] The utility model aims to provide a clamping device for processing the inner curvature of an automobile yoke, which has a compact structure and an ingenious design and can solve the problem of unstable clamping in the existing processing of the inner curvature of an automobile yoke.

[0004] The technical solution of the utility model is:

[0005] A clamping device for processing the inner curvature of an automobile yoke, comprising a limiting outer cylinder, a clamping inner cylinder, a frame, a transmission shaft, a rotating tube shaft, a driving motor and a transmission belt; characterized in that: the rotating tube shaft is mounted on the frame through a bearing; a transmission wheel is mounted at one end of the rotating tube shaft; a driving motor is mounted on the frame below the transmission wheel; the driving motor is connected to the transmission wheel through a transmission belt; the other end of the rotating tube shaft extends to the outer end of the frame and is fixedly mounted with a limiting outer cylinder; a clamping inner cylinder is arranged inside the limiting outer cylinder; one end of the clamping inner cylinder is connected to the transmission shaft; one end of the transmission shaft passes through the rotating tube shaft and is connected to a tensioning device mounted on the frame.

[0006] The tensioning device includes a push cylinder, a control fork and a thrust bearing; one end of the transmission shaft is provided with a thrust bearing after passing through the rotating tube shaft; the thrust bearing is hingedly connected with a control fork; the lower end of the control fork is hingedly connected to the frame; the upper end of the control fork is connected to the push cylinder installed on the frame.

[0007] The inner hole of the position-limiting outer cylinder is in a conical structure; and the position-limiting outer cylinder is symmetrically provided with external placement windows.

[0008] A plurality of expansion joints are evenly arranged at one end of the clamping inner tube; the outer surface of the clamping inner tube is a conical structure; the outer surface of the clamping inner tube is fittedly connected with the limiting outer tube; the clamping inner tube is symmetrically provided with inner placement windows; the inner placement windows correspond to the outer placement windows.

[0009] The inner hole of the clamping inner cylinder is provided with a positioning plane and a positioning arc surface.

[0010] A limit plate is arranged at the end of one end of the clamping inner cylinder.

[0011] The advantages of the utility model are:

[0012] The automobile yoke inner curvature processing clamping device has a compact structure and ingenious design. It can complete the clamping of the workpiece by clamping it, thereby solving the problem of unstable clamping when the existing lathe completes the yoke assembly through a three-jaw chuck. It is particularly suitable for the needs of automobile yoke inner curvature processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the automobile yoke;

[0014] Figure 2 It is a schematic diagram of the top view structure of the automobile yoke;

[0015] Figure 3 It is a structural schematic diagram of the utility model;

[0016] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 5 This is a schematic diagram of the structure of the limiting outer cylinder and the clamping inner cylinder of the utility model;

[0018] Figure 6 for Figure 4 Schematic diagram of the deformation structure;

[0019] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0020] In the figure: 1. base; 2. inner arc structure; 3. frame; 4. rotating tube shaft; 5. transmission wheel; 6. driving motor; 7. transmission belt; 8. limiting outer cylinder; 9. clamping inner cylinder; 10. tensioning device; 11. thrust bearing; 12. control fork; 13. pushing cylinder; 14. outer placement window; 15. expansion joint; 16. inner placement window; 17. positioning plane; 18. positioning arc surface; 19. limiting plate; 20. transmission shaft. DETAILED DESCRIPTION

[0021] The automobile yoke inner curvature processing clamping device comprises a limiting outer cylinder 8, a clamping inner cylinder 9, a frame 3, a transmission shaft 20, a rotating tube shaft 4, a driving motor 6 and a transmission belt 7 (see the attached manual). Figure 3 ).

[0022] The frame 3 is provided with a rotating tube shaft 4 through a bearing; a transmission wheel 5 is provided at one end of the rotating tube shaft 4; a driving motor 6 is provided on the frame 3 below the transmission wheel 5; the driving motor 6 is connected to the transmission wheel 5 through a transmission belt 7; the other end of the rotating tube shaft 4 extends to the outer end of the frame 3 and is fixedly provided with a limiting outer cylinder 8. When the driving motor 6 is working, it can drive the rotating tube shaft 4 to rotate synchronously through the transmission belt 7 and the transmission wheel 5.

[0023] The inner part of the limiting outer cylinder 8 is provided with a clamping inner cylinder 9; one end of the clamping inner cylinder 9 is connected to a transmission shaft 20; one end of the transmission shaft 20 passes through the rotating pipe shaft 4 and is connected to a tensioning device 10 installed on the frame 3 (see the attached manual). Figure 3 ).

[0024] The tensioning device 10 includes a push cylinder 13, a control fork 12 and a thrust bearing 11; one end of the transmission shaft 20 passes through the rotating tube shaft 4 and is equipped with the thrust bearing 11; the control fork 12 is hingedly connected to the thrust bearing 11; the lower end of the control fork 12 is hingedly connected to the frame 3; the upper end of the control fork 12 is connected to the push cylinder 13 installed on the frame 3. The purpose of setting the tensioning device 10 in this way is to enable the push cylinder 13 to push the transmission shaft 20 to move back and forth in the horizontal direction through the control fork 12 and the thrust bearing 11. In addition, when the transmission shaft 20 is rotated by force, the transmission shaft 20 can rotate freely under the action of the thrust bearing 11.

[0025] The inner hole of the limiting outer cylinder 8 is a conical structure; the limiting outer cylinder 8 is symmetrically provided with an outer placement window 14 (see the attached manual Figure 4 and 5 ).

[0026] A plurality of expansion joints 15 are evenly arranged at one end of the clamping inner cylinder 9 (see the attached manual). Figure 5 ); the outer surface of the clamping inner cylinder 9 is a conical structure; the outer surface of the clamping inner cylinder 9 is in close contact with the limiting outer cylinder 8; the clamping inner cylinder 9 is symmetrically provided with an inner placement window 16 (see the attached manual Figure 4 and 5 ); The inner placement window 16 corresponds to the outer placement window 14.

[0027] The inner hole of the clamping inner cylinder 9 is provided with a positioning plane 17 and a positioning arc surface 18 (see the appendix of the specification). Figure 5 A limit plate 19 is provided at the end of the clamping inner tube 9 (see the attached manual). Figure 7 The purpose of setting the clamping inner cylinder 9 in this way is to enable the workpiece to be placed inside the clamping inner cylinder 9 under the limiting effect of the positioning plane 17 and the positioning arc surface 18 during operation, and the transmission shaft 20 drives the clamping inner cylinder 9 to move backward, and the limiting outer cylinder 8 can press and squeeze the clamping inner cylinder 9 through the inner conical surface, thereby achieving the purpose of clamping the workpiece through the clamping inner cylinder 9.

[0028] When the automobile yoke inner curvature processing clamping device is working, the workpiece is first passed through the outer placement window 14 and the inner placement window 16, and then placed inside the clamping inner cylinder 9; at this time, the plane of the base 1 of the workpiece is in contact with the positioning plane 17; the arc surface of the base 1 is in contact with the positioning arc surface 18; the end face of the workpiece base 1 is in contact with the limit plate 19; in this way, the purpose of positioning the workpiece can be achieved.

[0029] After the above work is completed, the push cylinder 13 can push the transmission shaft 20 and the clamping inner cylinder 9 to move backward a certain distance in the horizontal direction through the control fork 12 and the thrust bearing 11. At this time, the clamping inner cylinder 9 will shrink under the extrusion of the limiting outer cylinder 8 to clamp the workpiece. Then the driving motor 6 drives the rotating pipe shaft 4, the limiting outer cylinder 8, the clamping inner cylinder 9 and the workpiece to rotate synchronously through the transmission belt 7 and the transmission wheel 5. During the rotation of the workpiece, the inner curvature of the workpiece is processed by the external cutting tool; then the clamping device can enter the next working cycle.

[0030] The automobile yoke inner curvature processing clamping device has a compact structure and ingenious design. It can complete the clamping of the workpiece by clamping it, thereby solving the problem of unstable clamping when the existing lathe completes the yoke assembly through a three-jaw chuck. It is particularly suitable for the needs of automobile yoke inner curvature processing.

Claims

1. A clamping device for processing the inner curvature of an automobile yoke, comprising a limiting outer cylinder (8), a clamping inner cylinder (9), a frame (3), a transmission shaft (20), a rotating tube shaft (4), a driving motor (6) and a transmission belt (7); characterized in that The frame (3) is provided with a rotating tube shaft (4) via a bearing; a transmission wheel (5) is provided at one end of the rotating tube shaft (4); a driving motor (6) is provided on the frame (3) below the transmission wheel (5); the driving motor (6) is connected to the transmission wheel (5) via a transmission belt (7); the other end of the rotating tube shaft (4) extends to the outer end of the frame (3) and is fixedly provided with a limiting outer cylinder (8); a clamping inner cylinder (9) is provided inside the limiting outer cylinder (8); one end of the clamping inner cylinder (9) is connected to a transmission shaft (20); one end of the transmission shaft (20) passes through the rotating tube shaft (4) and is connected to a tensioning device (10) installed on the frame (3).

2. The vehicle yoke inner curvature processing clamping device according to claim 1, characterized in that: The tensioning device (10) comprises a push cylinder (13), a control fork (12) and a thrust bearing (11); one end of the transmission shaft (20) passes through the rotating tube shaft (4) and is equipped with the thrust bearing (11); the control fork (12) is hingedly connected to the thrust bearing (11); the lower end of the control fork (12) is hingedly connected to the frame (3); and the upper end of the control fork (12) is connected to the push cylinder (13) installed on the frame (3).

3. The device for processing and clamping the inner curvature of an automobile yoke according to claim 1, characterized in that: The inner hole of the position-limiting outer cylinder (8) is of a conical structure; and the position-limiting outer cylinder (8) is symmetrically provided with external placement windows (14).

4. The vehicle yoke inner curvature processing clamping device according to claim 3 is characterized in that: A plurality of expansion joints (15) are evenly arranged at one end of the clamping inner cylinder (9); the outer surface of the clamping inner cylinder (9) is in a conical structure; the outer surface of the clamping inner cylinder (9) is fittedly connected to the limiting outer cylinder (8); inner placement windows (16) are symmetrically arranged on the clamping inner cylinder (9); and the inner placement windows (16) correspond to the outer placement windows (14).

5. The vehicle yoke inner curvature processing clamping device according to claim 4, characterized in that: The inner hole of the clamping inner cylinder (9) is provided with a positioning plane (17) and a positioning arc surface (18).

6. The vehicle yoke inner curvature processing clamping device according to claim 4, characterized in that: A limiting plate (19) is provided at the end of one end of the clamping inner cylinder (9).

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