Positioning clamp easy to adjust

Abstract

The utility model provides a positioning fixture easy to adjust, and relates to the technical field of positioning fixtures, the positioning fixture easy to adjust comprises a machining table, the inner side of the machining table is rotatably connected with a threaded rod, one end of the threaded rod is fixedly provided with a handle, the surface of the threaded rod is in threaded connection with a movable chuck, and the top end of the machining table is fixedly provided with a fixed chuck. According to the positioning and clamping device, the sliding groove, the toothed plate, the ejector blocks, the sliding rod, the back plate, the tension spring, the fixing plate, the lead screw, the clamping plate and the guide rod are arranged, in the positioning and clamping work process, the arrangement of the ejector blocks can be automatically adjusted according to the shape of a workpiece, and fixing after adjustment is conducted by rotating the lead screw; according to the positioning clamp, the effective clamping area of a workpiece can be effectively increased, the flexibility and adaptability of the positioning clamp are improved, compared with the mode that the workpiece clamping stability is improved by replacing a chuck, the adjusting mode saves more time and labor, and the working efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture which is easy to adjust. Background Art

[0002] A fixture is a device used to fix the processing object in the mechanical manufacturing process so that it occupies the correct position to accept construction or inspection, also known as a fixture. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process in the process can be called a fixture. Publication No. CN213319681U discloses a positioning fixture, including a spiral clamping mechanism connected to an inclined block by bolts, the spiral clamping mechanism includes a main body, a fixed clamping block, fixedly mounted on one end of the top of the main body, a spiral shaft, mounted inside the main body through a bearing, a movable clamping block, mounted on the other side of the top of the main body opposite to the fixed clamping block and maintaining a threaded connection with the spiral shaft, a handle, vertically mounted on the spiral shaft outside the main body, two clamping parts, respectively mounted on the corresponding surfaces of the fixed clamping block and the movable clamping block, a positioning block, sleeved on the fixed clamping block and maintaining a movable connection, and two connecting parts, respectively mounted on the two side surfaces of the main body. The positioning fixture adopts positioning and fixed-point clamping, which is simple and easy to operate, can be positioned repeatedly, and can ensure the accuracy of repeated positioning. However, when using this positioning fixture to clamp some irregular workpieces, the irregular shape of the workpiece may result in a smaller effective clamping area, thereby reducing the stability after clamping. At this time, it is necessary to replace different fixtures for adjustment, but this adjustment method is too complicated and will greatly reduce work efficiency, and needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: an easily adjustable positioning fixture, comprising a processing table, the inner side of the processing table is rotatably connected with a threaded rod, one end of the threaded rod is fixedly installed with a handle, the surface of the threaded rod is threadedly connected with a movable chuck, the top of the processing table is fixedly installed with a fixed chuck, the inner side of the fixed chuck is provided with a sliding groove, the inner side of the sliding groove is slidably connected with a toothed plate, the side surface of the toothed plate is fixedly installed with a top block, the side surface of the top block is fixedly installed with a sliding rod, the side surface of the sliding rod is fixedly installed with a back plate, the surface of the sliding rod is sleeved with a tension spring, the surface of the fixed chuck is fixedly installed with a fixing plate, the inner side of the fixing plate is threadedly connected with a screw rod, the bottom end of the screw rod is rotatably connected with a clamping plate, and the top end of the clamping plate is fixedly installed with a guide rod.

[0005] Preferably, the inner side of the movable chuck is provided with a thread, and the thread provided on the inner side of the movable chuck meshes with the thread on the surface of the threaded rod. Here, by providing the thread on the inner side of the movable chuck, the movable chuck can be driven to move during the rotation of the threaded rod, so that the workpiece can be clamped and positioned.

[0006] Preferably, the inner side of the fixing plate is provided with threads, and the threads provided on the inner side of the fixing plate mesh with the threads on the surface of the screw rod. Here, by providing the threads on the inner side of the fixing plate, the clamping plate can be driven to slide along the direction of the guide rod during the rotation of the screw rod.

[0007] Preferably, the movable chuck is slidably connected to the processing table, and the guide rod is slidably connected to the fixed plate. Here, by providing the movable chuck, the workpiece can be quickly positioned and clamped in cooperation with the fixed chuck, and by providing the guide rod, a guiding effect can be played, and the clamping plate can be driven to move along the direction of the guide rod during the rotation of the screw rod.

[0008] Preferably, one end of the tension spring is fixedly installed on the side of the fixed chuck, and the other end of the tension spring is fixedly installed on the side of the back plate. Here, by arranging the tension spring, the top plate can be more closely attached to the surface of the workpiece during contact with the workpiece.

[0009] Preferably, a T-block is fixedly mounted on the side of the top block, a pad is inserted on the surface of the T-block, a T-slot is provided on the inner side of the pad, and a limit plate is rotatably connected to the top of the top block. Here, by providing the T-block, pad, T-slot, and limit plate, not only can the surface of the workpiece be buffered during the clamping process to prevent the workpiece from being damaged, but also the pad can be quickly disassembled and replaced after it is damaged.

[0010] Preferably, the T-block is slidably connected to the T-slot. Here, by providing the T-slot, the T-block can cooperate with the T-block to achieve a limiting effect, so that the pad can only be separated from the top block by sliding upward.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, by arranging the slide groove, tooth plate, top block, slide rod, back plate, tension spring, fixed plate, screw rod, clamping plate and guide rod, the arrangement between the top blocks can be automatically adjusted according to the shape of the workpiece during the positioning and clamping work, and the adjusted fixation can be performed by rotating the screw rod, which can effectively increase the effective clamping area of ​​the workpiece, improve the flexibility and adaptability of the positioning fixture, and compared with replacing the chuck to improve the clamping stability of the workpiece, this adjustment method saves time and effort and can effectively improve work efficiency.

[0013] 2. In the utility model, by arranging T-blocks, pads, T-slots and limit plates, the workpiece can be buffered and protected during the clamping process to prevent damage to the workpiece caused by excessive clamping force. When the pad is damaged, the pad can be quickly disassembled, assembled and replaced by rotating the limit plate, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of an easily adjustable positioning fixture is provided for the utility model;

[0015] Figure 2 The utility model provides an exploded diagram of a screw rod and a clamping plate in an easily adjustable positioning fixture;

[0016] Figure 3 The utility model proposes an easily adjustable positioning fixture Figure 2 A in the enlarged view;

[0017] Figure 4 The utility model provides an exploded schematic diagram of a part of the structure of an easily adjustable positioning fixture;

[0018] Figure 5 The utility model proposes an easily adjustable positioning fixture Figure 4 The enlarged view of point B in the figure;

[0019] Figure 6 The utility model provides a partial structural schematic diagram of an easily adjustable positioning fixture.

[0020] Legend:

[0021] 1. Processing table; 2. Threaded rod; 3. Handle; 4. Moving chuck; 5. Fixed chuck; 6. Slide groove; 7. Tooth plate; 8. Top block; 9. Slide rod; 10. Backing plate; 11. Tension spring; 12. Fixed plate; 13. Screw rod; 14. Clamping plate; 15. Guide rod; 16. T-block; 17. Pad; 18. T-slot; 19. Limiting plate. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1

[0025] See also Figure 1-6 The utility model provides a technical solution: an easily adjustable positioning fixture, including a processing table 1, a threaded rod 2 is rotatably connected to the inner side of the processing table 1, a handle 3 is fixedly installed at one end of the threaded rod 2, a mobile chuck 4 is threadedly connected to the surface of the threaded rod 2, the mobile chuck 4 is slidably connected to the processing table 1, a thread is provided on the inner side of the mobile chuck 4, the thread provided on the inner side of the mobile chuck 4 is meshed with the thread on the surface of the threaded rod 2, a fixed chuck 5 is fixedly installed on the top of the processing table 1, a slide groove 6 is provided on the inner side of the fixed chuck 5, a tooth plate 7 is slidably connected to the inner side of the slide groove 6, a top block 8 is fixedly installed on the side of the tooth plate 7, a slide rod 9 is fixedly installed on the side of the top block 8, a back plate 10 is fixedly installed on the side of the slide rod 9, and the surface sleeve of the slide rod 9 A tension spring 11 is provided, one end of the tension spring 11 is fixedly installed on the side of the fixed clamp 5, and the other end of the tension spring 11 is fixedly installed on the side of the back plate 10. A fixing plate 12 is fixedly installed on the surface of the fixed clamp 5. A thread is provided on the inner side of the fixing plate 12. The thread provided on the inner side of the fixing plate 12 is meshed with the thread on the surface of the screw rod 13. The inner side thread of the fixing plate 12 is connected with the screw rod 13. The screw rod 13 is rotated and the clamping plate 14 is driven to slide downward along the guide rod 15 under the action of the thread until the clamping plate 14 is meshed with the tooth plate 7, so that the position of the adjusted top block 8 can be limited. The bottom end of the screw rod 13 is rotatably connected with the clamping plate 14, and the top end of the clamping plate 14 is fixedly installed with a guide rod 15, and the guide rod 15 is slidably connected to the fixing plate 12.

[0026] Embodiment 2

[0027] See also Figure 5-6 A T-block 16 is fixedly installed on the side of the top block 8, and the T-block 16 is slidably connected to the T-slot 18. A pad 17 is inserted on the surface of the T-block 16, and a T-slot 18 is opened on the inner side of the pad 17. The top of the top block 8 is rotatably connected to a limit plate 19. The pad 17 can provide buffer protection for the workpiece during the clamping process to prevent the workpiece from being damaged due to excessive clamping force.

[0028] Working principle: When working, first put the workpiece on the processing table 1, then rotate the threaded rod 2, and the movable chuck 4 will move towards the fixed chuck 5 under the action of the thread. After the pad 17 contacts the workpiece, the top block 8 will drive the slide rod 9 to slide and deform the tension spring 11 under the action of the force, and the tooth plate 7 will slide along the slide groove 6 until the arrangement between the top blocks 8 is roughly similar to the contour of the workpiece. At this time, the screw rod 13 is rotated and the clamping plate 14 is driven to slide downward along the guide rod 15 under the action of the thread until the clamping plate 14 is engaged with the tooth plate 7, so that the adjusted The position of the top block 8 is limited, and then the threaded rod 2 is rotated again to drive the movable chuck 4 to clamp the workpiece again. At this time, the top block 8 arranged in a roughly similar shape to the workpiece contour can effectively improve the stability of the workpiece after clamping. When the pad 17 is severely worn, first rotate the limit plate 19 so that it no longer rests against the pad 17, and then drive the pad 17 to slide upward to disengage it from the T-block 16, then take out the new pad 17 and align its T-slot 18 with the T-block 16, and then slide it in from top to bottom, rotate the limit plate 19 to make it rest against the pad 17 again, and now the replacement of the pad 17 is completed.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An easily adjustable positioning fixture, comprising a processing table (1), characterized in that: The inner side of the processing table (1) is rotatably connected to a threaded rod (2), one end of the threaded rod (2) is fixedly mounted with a handle (3), the surface of the threaded rod (2) is threadedly connected to a movable chuck (4), the top of the processing table (1) is fixedly mounted with a fixed chuck (5), the inner side of the fixed chuck (5) is provided with a slide groove (6), the inner side of the slide groove (6) is slidably connected to a tooth plate (7), the side of the tooth plate (7) is fixedly mounted with a top block (8), A sliding rod (9) is fixedly installed on the side of the top block (8), a back plate (10) is fixedly installed on the side of the sliding rod (9), a tension spring (11) is sleeved on the surface of the sliding rod (9), a fixing plate (12) is fixedly installed on the surface of the fixing chuck (5), a screw rod (13) is threadedly connected to the inner side of the fixing plate (12), the bottom end of the screw rod (13) is rotatably connected to a clamping plate (14), and a guide rod (15) is fixedly installed on the top end of the clamping plate (14).

2. The easily adjustable positioning fixture according to claim 1, characterized in that: The inner side of the movable clamp (4) is provided with a thread, and the thread provided on the inner side of the movable clamp (4) is meshed with the thread on the surface of the threaded rod (2).

3. The easily adjustable positioning fixture according to claim 1, characterized in that: The inner side of the fixing plate (12) is provided with a thread, and the thread provided on the inner side of the fixing plate (12) is meshed with the thread on the surface of the screw rod (13).

4. The easily adjustable positioning fixture according to claim 1, characterized in that: The movable chuck (4) is slidably connected to the processing table (1), and the guide rod (15) is slidably connected to the fixed plate (12).

5. The easily adjustable positioning fixture according to claim 1, characterized in that: One end of the tension spring (11) is fixedly mounted on the side of the fixing clamp (5), and the other end of the tension spring (11) is fixedly mounted on the side of the back plate (10).

6. The easily adjustable positioning fixture according to claim 1, characterized in that: A T-shaped block (16) is fixedly mounted on the side of the top block (8), a pad (17) is inserted on the surface of the T-shaped block (16), a T-shaped slot (18) is provided on the inner side of the pad (17), and the top end of the top block (8) is rotatably connected to a limiting plate (19).

7. The easily adjustable positioning fixture according to claim 6, characterized in that: The T-shaped block (16) is slidably connected to the T-shaped slot (18).

Images