Internal expansion type clamp adjusting tool
By designing an internal expansion clamp adjustment tool, the compatibility problem of fixed clamp operating distance is solved, and the clamping range is adjustable and expanded to adapt to workpieces of different sizes and shapes, thus improving the adaptability of the clamp.
Patent Information
- Application Number
- CN202422891086.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The existing internal expansion clamp has a fixed operating distance, which cannot adapt to situations beyond the adjustment range, resulting in compatibility issues.
An internal expansion clamp adjustment tool was designed. By adjusting the combination structure of the rotating shaft, top block, clamping block and fine adjustment disk, the clamping block spacing can be adjusted and expanded. The design of inclined surface and magnetic block enhances the clamping ability and adapts to workpieces of different sizes and shapes.
It achieves adjustable and expandable clamping range, adapting to workpieces of different sizes and shapes, thus improving the adaptability and compatibility of the clamp.
Smart Images
Figure CN223493040U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology, specifically to an internal expansion clamp adjustment tool. Background Technology
[0002] The internal expansion clamp mainly consists of three parts: the clamp body, the tensioning screw (or piston and other tensioning mechanisms), and the central shaft. When using the internal expansion clamp, the clamp body is first inserted into the workpiece to be clamped, or the workpiece is placed into the clamp in some way. Then, the clamping force inside the clamp is increased by mechanical means (such as rotating the tensioning screw) or hydraulic means (such as piston movement). This clamping force acts on the outer surface of the workpiece from the inside out, generating resistance, thereby achieving the effect of fixing and clamping.
[0003] Internal expansion clamps play a key role in various application scenarios, but existing internal expansion clamps also have some shortcomings. The operating distance of existing internal expansion clamps is mostly fixed, which cannot adapt to situations where the adjustment distance exceeds the range, resulting in incompatibility issues.
[0004] To address the aforementioned technical problems, an internal expansion clamp adjustment tool is proposed. Utility Model Content
[0005] In view of the shortcomings of the prior art, this utility model provides an internal expansion clamp adjustment tool, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an internal expansion clamp adjustment tool, comprising a handheld part, an adjustment shaft, a top block, and a pair of clamping blocks disposed between the handheld part and the top block. The handheld part has a circular through hole adapted to the adjustment shaft through its middle portion. The top of the adjustment shaft has an external thread, and the bottom surface of the adjustment shaft has an internal hexagonal groove. The top block has an internal thread hole adapted to the external thread in its middle portion. A rotating cap is fixedly installed at the bottom end of the adjustment shaft. By turning the rotating cap by hand, the adjustment shaft can be rotated inside the handheld part. The rotating adjustment shaft can cooperate with the thread to drive the top block to move along the direction of the adjustment shaft.
[0007] Two clamping blocks are fixedly installed with connecting posts at diagonal positions on one side of each other, and each clamping block has a connecting hole that aligns with the connecting post. The connecting post and its corresponding connecting hole are movably connected. Both clamping blocks are connected to the connecting holes on the adjacent clamping blocks by means of the connecting post. The distance between the two clamping blocks can be adjusted along the direction of the connecting post and the connecting hole. At the same time, the connecting post and the connecting hole can limit the maximum distance between the two clamping blocks to prevent the two clamping blocks from separating.
[0008] As a preferred embodiment of this utility model, the hand-held part and the top block are both formed with a first inclined surface at one end close to each other, and the upper and lower ends of the two clamping blocks are both formed with a second inclined surface that matches the first inclined surface.
[0009] When the rotating adjustment shaft drives the top block to move towards the hand-held part, the two clamping blocks located between the hand-held part and the top block can cooperate with the inclined surface 1 at the end of the hand-held part and the top block through the second inclined surface on them. Under the continuous pressure of the hand-held part and the top block, the distance between the two clamping blocks gradually increases, which is used to clamp from the inside to the outside.
[0010] As a preferred technical solution of this utility model, an assembly groove is formed in the middle of the clamping block. The assembly groove is adapted to the shape and size of the adjusting shaft. Magnetic blocks are fixedly installed on the two clamping blocks on opposite sides. A top plate is magnetically connected to the magnetic blocks.
[0011] The top plate acts between the clamping block and the object being clamped, preventing the clamping block from directly contacting the object.
[0012] As a preferred technical solution of this utility model, a fine adjustment disk is magnetically installed on the side of the top plate away from the clamping block. A cross-shaped bracket is formed on the inner wall of the fine adjustment disk. The fine adjustment disk and the top plate are concentrically arranged. A number of concentrically arranged annular snap-fit grooves are formed on the side of the cross-shaped bracket away from the top plate. Adjustment washers are detachably connected between the annular snap-fit grooves on the same radius.
[0013] The fine-tuning disc can further increase the outward extension range of the clamping block, improving its adaptability. The adjusting washer and the annular snap-fit groove can be installed in pairs, and the adjusting washer with the appropriate radius can be selected and installed on the annular snap-fit groove within the appropriate radius according to the actual workpiece installation size and shape, so as to adapt to the use of workpieces of different sizes or shapes.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] When the top block is driven to move towards the hand-held part by rotating the adjusting shaft, the two clamping blocks located between the hand-held part and the top block can cooperate with the inclined surface 1 at the end of the hand-held part and the top block through the second inclined surface on them. Under the continuous pressure of the hand-held part and the top block, the distance between the two clamping blocks is gradually increased, thereby clamping from the inside to the outside. As the adjusting shaft continues to rotate, the resistance gradually increases. Subsequently, the adjusting shaft can be rotated by inserting a hexagonal wrench into the internal hexagonal slot. When the distance of clamping the workpiece is greater than the maximum distance range of the clamping blocks, the outward extension range of the clamping blocks can be further increased by using the fine adjustment disc to improve its adaptability. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the assembly of the fine-tuning disc of this utility model;
[0017] Figure 2 This is a three-dimensional schematic diagram of the present invention;
[0018] Figure 3 This is a side view of the present invention;
[0019] Figure 4 For the present utility model Figure 3 Schematic diagram of the cross section at point AA;
[0020] Figure 5 This is a schematic diagram of the clamping block assembly of this utility model;
[0021] Figure 6 For the present utility model Figure 1 A magnified view of a portion of point B in the middle.
[0022] In the diagram: 1. Handheld part; 2. Adjusting shaft; 201. External thread; 202. Internal hexagonal slot; 3. Rotating cap; 4. Top block; 5. Inclined surface one; 6. Clamping block; 601. Assembly slot; 602. Inclined surface two; 603. Connecting column; 604. Connecting hole; 7. Magnetic block; 8. Top plate; 9. Fine adjustment disc; 10. Circular snap-fit groove; 11. Adjustment washer. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-6An internal expansion clamp adjustment tool includes a handheld part 1, an adjustment shaft 2, a top block 4, and a pair of clamping blocks 6 disposed between the handheld part 1 and the top block 4. A circular through hole adapted to the adjustment shaft 2 is formed through the middle of the handheld part 1. An external thread 201 is formed on the top of the adjustment shaft 2, and an internal hexagonal groove 202 is formed on the bottom surface of the adjustment shaft 2. An internal threaded hole adapted to the external thread 201 is formed in the middle of the top block 4. A rotating cap 3 is fixedly installed at the bottom end of the adjustment shaft 2. By manually turning the rotating cap 3, the adjustment shaft 2 can be rotated inside the handheld part 1. The rotating adjustment shaft 2 can cooperate with the threaded drive of the top block 4 along the adjustment... The shaft 2 moves in the direction of rotation. Two clamping blocks 6 are fixedly installed with connecting posts 603 at diagonal positions on one side of each other. Each clamping block 6 has a connecting hole 604 that aligns with the connecting post 603. The connecting post 603 and its corresponding connecting hole 604 are movably connected. Both clamping blocks 6 are connected to the connecting hole 604 on the adjacent clamping block 6 by means of the connecting post 603. The distance between the two clamping blocks 6 can be adjusted along the direction of the connecting post 603 and the connecting hole 604. At the same time, the connecting post 603 and the connecting hole 604 can limit the maximum distance between the two clamping blocks 6 to prevent the two clamping blocks 6 from separating.
[0025] Specifically, the handle 1 and the top block 4 are both formed with inclined surfaces 5 at their close ends. The upper and lower ends of the two clamping blocks 6 are both formed with inclined surfaces 602 that are adapted to the inclined surfaces 5. When the rotating adjustment shaft 2 drives the top block 4 to move towards the handle 1, the two clamping blocks 6 located between the handle 1 and the top block 4 can cooperate with the inclined surfaces 5 at the ends of the handle 1 and the top block 4 through the inclined surfaces 602 on them. Under the continuous pressure of the handle 1 and the top block 4, the distance between the two clamping blocks 6 is gradually increased, which is used to clamp from the inside to the outside.
[0026] Specifically, a mounting groove 601 is formed in the middle of the clamping block 6. The mounting groove 601 is adapted to the shape and size of the adjusting shaft 2. Magnetic blocks 7 are fixedly installed on the two clamping blocks 6 on opposite sides. A top plate 8 is magnetically connected to the magnetic blocks 7. The top plate 8 can act between the clamping block 6 and the clamped object, avoiding direct contact between the clamping block 6 and the object, thus protecting the main body of the clamping block 6.
[0027] Specifically, a fine-tuning disc 9 is magnetically mounted on the side of the top plate 8 away from the clamping block 6. A cross-shaped bracket is formed on the inner wall of the fine-tuning disc 9. The fine-tuning disc 9 and the top plate 8 are concentrically arranged. Several concentrically arranged annular locking grooves 10 are formed on the side of the cross-shaped bracket away from the top plate 8. Adjustment washers 11 are detachably connected between the annular locking grooves 10 on the same radius. The fine-tuning disc 9 can further increase the outward extension range of the clamping block 6 and improve its adaptability. The adjustment washers 11 and the annular locking grooves 10 can be installed in pairs. The adjustment washers 11 with the appropriate radius can be selected and installed on the annular locking grooves 10 within the appropriate radius according to the actual workpiece installation size and shape, so as to adapt to the use of workpieces of different sizes or shapes.
[0028] Working principle: By turning the cap 3 by hand, the adjusting shaft 2 rotates inside the handheld part 1. The rotating adjusting shaft 2, in conjunction with the threaded drive block 4, moves along the direction of the adjusting shaft 2. When the adjusting shaft 2 drives the block 4 towards the handheld part 1, the two clamping blocks 6 located between the handheld part 1 and the block 4 can engage with the inclined surfaces 602 on them through the inclined surfaces 5 at the ends of the handheld part 1 and the block 4. Under the continuous pressure of the handheld part 1 and the block 4, the distance between the two clamping blocks 6 gradually increases, thus clamping from the inside out. As the adjustment... As the rotating shaft 2 continues to rotate, the resistance gradually increases. Subsequently, the rotating shaft 2 can be adjusted by inserting a hex wrench into the internal hexagonal slot 202. When the distance between the clamped workpiece and the workpiece exceeds the maximum distance range of the clamping block 6, the outward extension range of the clamping block 6 can be further increased by the fine-tuning disc 9, thereby improving its adaptability. The adjusting washer 11 and the annular snap-fit groove 10 can be installed in pairs. The adjusting washer 11 with the appropriate radius can be selected and installed on the annular snap-fit groove 10 within the appropriate radius according to the actual workpiece installation size and shape, so as to adapt to workpieces of different sizes or shapes.
[0029] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An internal expansion clamp adjustment tool, comprising a handheld part (1), an adjustment shaft (2), a top block (4), and a pair of clamping blocks (6) disposed between the handheld part (1) and the top block (4), characterized in that: The handheld part (1) has a circular through hole that is adapted to the adjusting shaft (2) through the middle part. The top of the adjusting shaft (2) has an external thread (201). The bottom surface of the adjusting shaft (2) has an internal hexagonal groove (202). The top block (4) has an internal thread hole that is adapted to the external thread (201) in the middle part. Two clamping blocks (6) are fixedly installed with connecting posts (603) at diagonal positions on one side of each other, and each clamping block (6) has a connecting hole (604) that is aligned with the connecting post (603). The connecting post (603) is movably connected to its corresponding connecting hole (604).
2. The internal expansion clamp adjustment tool according to claim 1, characterized in that: A rotating cap (3) is fixedly installed at the bottom end of the adjusting shaft (2).
3. The internal expansion clamp adjustment tool according to claim 1, characterized in that: The hand-held part (1) and the top block (4) are both formed with inclined surface 1 (5) at one end close to each other, and the upper and lower ends of the two clamping blocks (6) are both formed with inclined surface 2 (602) adapted to inclined surface 1 (5).
4. The internal expansion clamp adjustment tool according to claim 1, characterized in that: The clamping block (6) has an assembly groove (601) in the middle. The assembly groove (601) is adapted to the shape and size of the adjusting shaft (2). Magnetic blocks (7) are fixedly installed on the two clamping blocks (6) on opposite sides. A top plate (8) is magnetically connected to the magnetic blocks (7).
5. The internal expansion clamp adjustment tool according to claim 4, characterized in that: A fine-tuning disk (9) is magnetically installed on the side of the top plate (8) away from the clamping block (6). A cross-shaped bracket is formed on the inner wall of the fine-tuning disk (9), and the fine-tuning disk (9) and the top plate (8) are concentrically arranged.
6. The internal expansion clamp adjustment tool according to claim 5, characterized in that: The cross-shaped bracket has several concentrically arranged annular snap-fit grooves (10) on the side away from the top plate (8).
7. The internal expansion clamp adjustment tool according to claim 6, characterized in that: Adjustable gap washers (11) are detachably connected between the annular snap-fit grooves (10) on the same radius.