Clamp capable of automatically rotating and turning around

Abstract

The utility model belongs to the technical field of clamps, and provides an automatic rotating and turning clamp which comprises a rotating power piece and a clamping mechanism, the clamping mechanism comprises a clamping block, a clamping power piece and a pressing piece, the clamping block is connected with the output end of the rotating power piece, a limiting groove corresponding to a workpiece is formed in the clamping block, and the clamping power piece is connected with the pressing piece. The limiting groove penetrates through the clamping block in the radial direction of the rotating track of the clamping block, the clamping power piece is installed on the clamping block, the output end of the clamping power piece is connected with the pressing piece, and the clamping power piece drives the pressing piece to stretch into the limiting groove or be pulled out of the limiting groove so as to clamp or loosen the workpiece. According to the automatic rotating and turning clamp, after one end of the workpiece is machined, the workpiece can be directly turned by 180 degrees, the other end of the workpiece continues to be machined, operation procedures are reduced, the workpiece does not need to be manually unloaded to be clamped and calibrated again, and work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to an automatic rotating U-turn clamp. Background Art

[0002] Shaft workpieces are usually processed by lathes. Some shaft workpieces need to be processed at both ends. Due to the clamping of the lathe, one end needs to be processed first and then the other end. Such shaft workpieces can be processed by double-head lathes, but the cost of double-head lathes is high, resulting in high investment in equipment. Therefore, for workpieces with low value, ordinary single-head lathes are still used for processing. During processing, only one end of the workpiece can be processed first. After the processing of this end is completed, the workpiece is removed, the processed end of the workpiece is clamped again, and the unprocessed end is processed again. This operation method leads to low production efficiency and cumbersome operation, which seriously affects the output.

[0003] The technical problem to be solved by the present application is: how to solve the problem that the existing workpieces that need to be processed at both ends need to be manually disassembled and switched between the processing ends of the workpieces. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an automatic rotating turning fixture, which can automatically turn a workpiece 180 degrees to process both ends of the workpiece, thereby improving processing efficiency.

[0005] The technical solution adopted by the utility model is: an automatic rotating U-turn clamp, including a rotating power member and a clamping mechanism, the clamping mechanism includes a clamping block, a clamping power member and a clamping member, the clamping block is connected to the output end of the rotating power member, a limiting groove corresponding to the workpiece is opened on the clamping block, the limiting groove penetrates the clamping block along the radial direction of the rotation trajectory of the clamping block, the clamping power member is installed on the clamping block, the output end of the clamping power member is connected to the clamping member, the clamping power member drives the clamping member to extend into the limiting groove or be withdrawn from the limiting groove to clamp or release the workpiece.

[0006] The automatic rotating turning clamp of the utility model is installed on the slide of the lathe when in use. After one end of the workpiece is processed, the slide drives the clamp to slide toward the main shaft. After the processed end of the workpiece is inserted into the limit groove, the slide stops and the clamping power part drives the clamping part to clamp the workpiece at the same time. Then the rotating power part drives the clamping block to carry the workpiece and rotate 180°. Then, the processed end of the workpiece is inserted into the main shaft (in order to avoid interference between the workpiece and the main shaft, when the workpiece rotates, the slide drives the clamp to retreat a certain distance first, and after it is rotated into place, the slide drives the clamp to slide a certain distance toward the main shaft), so that the end to be processed is exposed from the main shaft, and the other end to be processed of the workpiece is continuously processed, thereby improving the efficiency of switching the processing end of the workpiece, thereby improving the processing efficiency of the workpiece and reducing the labor intensity of the operator.

[0007] In some embodiments, an ejection mechanism is also included, which includes a push rod and a push power member. The push rod is arranged on both sides of the clamping block relative to the external machine tool spindle. The output end of the push power member is connected to the push rod. The push power member drives the push rod to push the workpiece out of the limiting groove onto the external machine tool spindle.

[0008] By adopting the above technical solution, when the length of the limiting groove exceeds the length of the workpiece, the push rod is driven by the push power member to push the workpiece onto the spindle, which can ensure smooth switching of the workpiece processing end.

[0009] In some embodiments, the push rod and the workpiece are clearance-matched with the limiting groove.

[0010] By adopting the above technical solution, it can be ensured that the push rod and the workpiece can smoothly enter the limiting groove.

[0011] In some embodiments, the side wall of the limiting groove is a closed or open structure.

[0012] By adopting the above technical solution, the limit groove can be set to a closed or open structure according to actual processing requirements and workpiece shape, which is flexible and changeable.

[0013] In some embodiments, a slide groove connected to the limiting groove is provided on the clamping block, and the slide groove serves as a passage for the pressing member to extend into or be withdrawn from the limiting groove.

[0014] By adopting the above technical solution, the sliding of the clamping block can be facilitated.

[0015] In some embodiments, the clamping power member is mounted on top of the clamping block.

[0016] By adopting the above technical solution, it is possible to avoid interference between the clamping power part and other components when the clamping block rotates.

[0017] In some embodiments, the rotating power member is a rotating cylinder, and the clamping block is fixedly connected to a rotating disk of the rotating cylinder.

[0018] By adopting the above technical solution, the integration of the rotary cylinder is high, which is beneficial to the volume of the required clamp and reduces the cost.

[0019] In some embodiments, the pushing power member is installed on the cylinder body of the rotary cylinder.

[0020] By adopting the above technical solution, the integration level is high and the structure of the fixture is made more compact.

[0021] In some embodiments, the ejection mechanism further includes a mounting frame, and the pusher power member is connected to the cylinder body of the rotary cylinder via the mounting frame.

[0022] In some embodiments, the clamping power member and the pushing power member are both telescopic cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an automatic rotating U-turn fixture of a preferred embodiment of the utility model;

[0024] Figure 2 for Figure 1 The cross-sectional structure diagram of the automatic rotating U-turn fixture along line AA is shown.

[0025] In the figure: 100, automatic rotating U-turn fixture; 10, rotating power member; 20, clamping mechanism; 21, clamping block; 211, limiting groove; 212, slide groove; 22, clamping power member; 23, pressing member; 30, ejection mechanism; 31, push rod; 32, pushing power member; 33, mounting frame. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] See also Figure 1 to Figure 2, which is an automatic rotating U-turn clamp 100 of a preferred embodiment of the utility model, comprises a rotating power member 10 and a clamping mechanism 20, wherein the clamping mechanism 20 comprises a clamping block 21, a clamping power member 22 and a clamping member 23, wherein the clamping block 21 is connected to the output end of the rotating power member 10, and a limiting groove 211 corresponding to the workpiece is provided on the clamping block 21, and the limiting groove 211 penetrates the clamping block 21 along the radial direction of the rotation trajectory of the clamping block 21, and the clamping power member 22 is installed on the clamping block 21, and the output end of the clamping power member 22 is connected to the clamping member 23, and the clamping power member 22 drives the clamping member 23 to extend into the limiting groove 211 or to be withdrawn from the limiting groove 211 to clamp or release the workpiece. The automatic rotating U-turn clamp 100 of the utility model can directly turn the workpiece 180 degrees after processing one end of the workpiece, and continue processing the other end, thereby reducing the operation process, and there is no need to manually remove the workpiece for clamping and calibration again, thereby improving the work efficiency.

[0030] Preferably, in order to facilitate ejecting the workpiece from the clamping member to the machine tool spindle, the automatic rotary turning fixture 100 further includes an ejection mechanism 30, which includes a push rod 31 and a material pushing power member 32. The push rod 31 is arranged on both sides of the clamping block 21 relative to the external machine tool spindle, and the output end of the material pushing power member 32 is connected to the push rod 31. The material pushing power member 32 drives the push rod 31 to push the workpiece from the limiting groove 211 to the external machine tool spindle. When the length of the limiting groove 211 exceeds the length of the workpiece, the push rod 31 is driven by the material pushing power member 32 to push the workpiece onto the spindle, which can ensure smooth switching of the workpiece processing end.

[0031] Preferably, in order to ensure that the workpiece can be turned around smoothly, the push rod 31, the limiting groove 211 and the central axis of the machine tool spindle are on the same horizontal line.

[0032] Preferably, the push rod 31 and the workpiece are clearance-matched with the limiting groove 211. Such an arrangement can ensure that the push rod 31 and the workpiece can smoothly enter the limiting groove 211.

[0033] Furthermore, the clamping block 21 is provided with a slide groove 212 communicating with the limiting groove 211, and the slide groove 212 is used as a passage for the pressing member 23 to extend into or withdraw from the limiting groove 211. By providing the slide groove 212 on the clamping block 21, the clamping block 21 can be easily slidable.

[0034] Optionally, the side wall of the limit groove 211 is a closed or open structure. The limit groove 211 can be set to a closed or open structure according to actual processing requirements and the shape of the workpiece, which is flexible and changeable. Similarly, the shape of the limit groove 211 can also be adaptively set according to the shape of the workpiece, and is not limited to the shape shown in the accompanying drawings.

[0035] Preferably, the clamping power member 22 is installed on the top of the clamping block 21. This can avoid interference between the clamping power member 22 and other components when the clamping block 21 rotates.

[0036] In this embodiment, the rotating power part 10 is a rotating cylinder, and the clamping block 21 is fixedly connected to the turntable of the rotating cylinder. The high integration of the rotating cylinder is beneficial to the volume of the required clamp and the reduction of cost. In other embodiments, the rotating power part 10 can also be set as a motor, a rotating oil cylinder or other power components that can achieve the same function.

[0037] Optionally, the pusher power member 32 is mounted on the cylinder body of the rotary cylinder. This can improve the integration of the fixture and make the structure of the fixture more compact. Preferably, the ejection mechanism 30 also includes a mounting frame 33, and the pusher power member 32 is connected to the cylinder body of the rotary cylinder through the mounting frame 33.

[0038] In this embodiment, the clamping power member 22 and the pushing power member 32 are both telescopic cylinders. Correspondingly, the pressing member 23 is connected to the telescopic rod of the clamping power member 22 (cylinder), or the telescopic rod of the cylinder can be directly used as the clamping member 23; similarly, the push rod 31 is connected to the telescopic rod of the pushing power member 32 (cylinder), or the telescopic rod of the cylinder can be directly used as the push rod 31. In other embodiments, the clamping power member 22 and the pushing power member 32 can also be set as other power components that can achieve the same function, such as oil cylinders and electric push rods.

[0039] Optionally, in order to prevent the clamping member 23 and the push rod 31 from crushing the workpiece, a buffer head (not shown) can be set at the end where the clamping member 23 and the push rod 31 contact the workpiece. The buffer head can be made of a softer material such as aluminum, copper, rubber or silicone.

[0040] In this embodiment, the clamping block 21 is a cylinder. In other embodiments, the clamping block 21 may also be configured as a multi-faceted cube, and is not limited to the shape shown in the drawings.

[0041] When in use, the automatic rotating turning fixture 100 is installed on the slide of the lathe. After one end of the workpiece is processed, the slide drives the fixture to slide toward the spindle. After the processed end of the workpiece is inserted into the limit groove 211, the slide stops, and at the same time the clamping power member 22 drives the clamping member 23 to clamp the workpiece. Then the rotating power member 10 drives the clamping block 21 to carry the workpiece to rotate 180°, and then the pushing power member 32 drives the push rod 31 to push the processed end of the workpiece into the spindle of the machine tool (in order to avoid interference between the workpiece and the spindle, when the workpiece rotates, the slide can drive the fixture to retreat a certain distance first, and after it rotates into place, the slide drives the fixture to slide a certain distance toward the spindle), so that the end to be processed is exposed from the spindle, and then the slide drives the fixture to reset, and then continues to process the other end of the workpiece, thereby improving the efficiency of switching the processing end of the workpiece, thereby improving the processing efficiency of the workpiece and reducing the labor intensity of the operator.

[0042] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic rotating U-turn fixture (100), characterized in that: The invention comprises a rotating power piece (10) and a clamping mechanism (20), wherein the clamping mechanism (20) comprises a clamping block (21), a clamping power piece (22) and a pressing piece (23), wherein the clamping block (21) is connected to the output end of the rotating power piece (10), a limiting groove (211) corresponding to the workpiece is provided on the clamping block (21), and the limiting groove (211) penetrates the clamping block (21) along the radial direction of the rotation trajectory of the clamping block (21), the clamping power piece (22) is mounted on the clamping block (21), the output end of the clamping power piece (22) is connected to the pressing piece (23), and the clamping power piece (22) drives the pressing piece (23) to extend into the limiting groove (211) or to be withdrawn from the limiting groove (211) so as to clamp or release the workpiece.

2. The automatic rotating U-turn fixture (100) according to claim 1, characterized in that: The invention also comprises an ejection mechanism (30), wherein the ejection mechanism (30) comprises a push rod (31) and a material pushing power piece (32), wherein the push rod (31) and an external machine tool spindle are arranged on both sides of the clamping block (21) relative to each other, and the output end of the material pushing power piece (32) is connected to the push rod (31), and the material pushing power piece (32) drives the push rod (31) to push the workpiece out of the limiting groove (211) onto the external machine tool spindle.

3. The automatic rotating U-turn fixture (100) according to claim 2, characterized in that: The push rod (31) and the workpiece are clearance-matched with the limiting groove (211).

4. The automatic rotating U-turn fixture (100) according to claim 1, characterized in that: The side wall of the limiting groove (211) is a closed or open structure.

5. The automatic rotating U-turn fixture (100) according to claim 1, characterized in that: The clamping block (21) is provided with a sliding groove (212) which is in communication with the limiting groove (211), and the sliding groove (212) is used as a passage for the pressing member (23) to extend into or be withdrawn from the limiting groove (211).

6. The automatic rotating U-turn fixture (100) according to claim 1, characterized in that: The clamping power member (22) is installed on the top of the clamping block (21).

7. The automatic rotating U-turn fixture (100) according to claim 2, characterized in that: The rotating power part (10) is a rotating cylinder, and the clamping block (21) is fixedly connected to the rotating disk of the rotating cylinder.

8. The automatic rotating U-turn fixture (100) according to claim 7, characterized in that: The material pushing power member (32) is installed on the cylinder body of the rotary cylinder.

9. The automatic rotating U-turn fixture (100) according to claim 8, characterized in that: The ejection mechanism (30) further comprises a mounting frame (33), and the material pushing power member (32) is connected to the cylinder body of the rotary cylinder via the mounting frame (33).

10. The automatic rotating U-turn fixture (100) according to claim 2, characterized in that: The clamping power member (22) and the material pushing power member (32) are both telescopic cylinders.

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