Improved latch structure and chuck assembly

Abstract

The utility model belongs to the technical field of chucks, and particularly relates to an improved latch structure and a chuck assembly, the improved latch structure comprises a main plate, two ends of the top of the main plate are provided with a fixing block and an adjusting block which are parallel to each other, and one side of the fixing block facing the adjusting block is provided with a clamping layer used for clamping a workpiece. And the adjusting block is movably clamped on the clamping layer, so that through the arrangement of the fixed block, the clamping layer and the adjusting block, when a hollow workpiece in the shape of a circular ring or a triangular frame needs to be clamped, a user can place the side wall of the workpiece on the clamping layer, and due to the fact that the clamping layer is located between the fixed block and the adjusting block, the side wall of the workpiece can be placed on the clamping layer. Therefore, the outer side and the inner side of the side wall of the workpiece can be clamped in the clamping layer by the adjusting block and the fixing block respectively, stable clamping of the hollow workpiece is achieved, and the clamping force can be adjusted according to the actual situation of the workpiece through the reciprocating motion function of the adjusting block in the horizontal direction so as to adapt to the hollow workpieces of different sizes and shapes.

Description

Technical Field

[0001] The utility model belongs to the technical field of chucks, and particularly relates to an improved chuck tooth structure and a chuck assembly. Background Art

[0002] When machining a workpiece, it is necessary to clamp the workpiece. There are many kinds of clamping tools, including the three-jaw chuck. The three-jaw chuck is a machine tool accessory that clamps and positions the workpiece by the radial movement of three movable jaws evenly distributed on the chuck body, and it is convenient to use.

[0003] In the prior art, the three-jaw chuck usually clamps the workpiece by directly contacting the chuck jaw with the side wall of the workpiece. This method can achieve a good clamping effect in the case of machining some solid workpieces, such as circular plates or hexagonal plates. However, in the case of machining some hollow workpieces, such as circular ring workpieces, there is a risk of pressing the ring wall into a depression, resulting in damage to the workpiece.

[0004] The above information disclosed in the background art section is only used to enhance the understanding of the background art of the technology described in this article. Therefore, the background art may contain certain information that is not prior art known to those skilled in the art in this country. Summary of the Utility Model

[0005] In view of this, the utility model provides an improved chuck tooth structure and a chuck assembly. The purpose is that through the settings of the fixing block, the clamping layer and the adjusting block, when it is necessary to clamp a hollow workpiece such as a circular ring or a triangular frame, the user can place the side wall of the workpiece on the clamping layer. Since the clamping layer is located between the fixing block and the adjusting block, the outer and inner sides of the workpiece side wall will be clamped in the clamping layer by the adjusting block and the fixing block respectively, so as to realize the stable clamping of the hollow workpiece. Secondly, the horizontal reciprocating movement function of the adjusting block enables the clamping force to be adjusted according to the actual situation of the workpiece to adapt to hollow workpieces of different sizes and shapes.

[0006] The technical solution adopted by the utility model is as follows:

[0007] An improved chuck tooth structure includes a main board. At both ends of the top of the main board, there are a fixing block and an adjusting block that are parallel to each other. Among them, on the side of the fixing block facing the adjusting block, there is a clamping layer for clamping the workpiece. The adjusting block is movably clamped on the clamping layer, and the adjusting block can make a horizontal reciprocating movement on the clamping layer.

[0008] As a preferred technical solution, the side of the fixing block facing the adjusting block is arranged in an arc surface structure, and the arc surface protrudes towards the adjusting block side.

[0009] Further, positioning holes and positioning posts for fixing the adjusting block are provided at the clamping position of the adjusting block and the clamping layer.

[0010] Further, a stepped abutting layer is provided on the side of the fixing block away from the adjusting block.

[0011] Further, an extrusion block for extruding the top of the workpiece and a connecting top layer for connecting with the extrusion block are provided on the top of the adjusting block. Among them, the extrusion blocks are distributed in parallel above the clamping layer.

[0012] Further, the extrusion block is a rectangular plate body, and corresponding threaded holes are provided between the extrusion block and the connecting top layer.

[0013] Further, clamping blocks are provided on both sides of the main board, and clamping grooves corresponding to the clamping blocks are provided on the inner walls on both sides of the clamping groove.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0015] Through the settings of the fixing block, the clamping layer and the adjusting block, when it is necessary to clamp a hollow workpiece in the shape of a circular ring or a triangular frame, the user can place the side wall of the workpiece on the clamping layer. Since the clamping layer is located between the fixing block and the adjusting block, the outer and inner sides of the side wall of the workpiece will be respectively clamped by the adjusting block and the fixing block in the clamping layer, thereby realizing the stable clamping of the hollow workpiece. Secondly, the horizontal reciprocating movement function of the adjusting block enables the clamping force to be adjusted according to the actual situation of the workpiece to adapt to hollow workpieces of different sizes and shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be described by way of examples with reference to the accompanying drawings, where:

[0017] Figure 1 is a schematic structural diagram of an improved tooth structure provided by the present utility model;

[0018] Figure 2 is a schematic structural diagram of a chuck assembly provided by the present utility model.

[0019] Disk body - 1; Main board - 2; Fixing block - 3; Adjusting block - 4; Clamping layer - 5; Abutting layer - 6; Connecting top layer - 7; Positioning hole - 8; Positioning post - 9; Clamping block - 10; Clamping groove - 11; Clamping slot - 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following clearly and completely describes the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model.

[0021] In the first embodiment, in the prior art, the three-jaw chuck mainly realizes the clamping function through the direct contact between the jaws and the side wall of the workpiece. This clamping method can provide effective fixation for solid workpieces, such as circular plates or hexagonal plates, during the processing. However, when used for hollow workpieces, such as annular workpieces, there is a risk of denting the ring wall, which may cause damage to the workpiece.

[0022] Therefore, in order to solve the problem of potential damage when the existing three-jaw chuck clamps hollow workpieces and achieve the functions of improving clamping stability and reducing workpiece damage, the present utility model discloses an improved tooth structure. Refer to Figure 1 , which includes a main board 2. At both ends of the top of the main board 2, there are provided a fixed block 3 and an adjustment block 4 that are parallel to each other. Among them, on the side of the fixed block 3 facing the adjustment block 4, there is provided a clamping layer 5 for clamping the workpiece. The adjustment block 4 is movably clamped on the clamping layer 5, and the adjustment block 4 can perform reciprocating movement in the horizontal direction on the clamping layer 5;

[0023] In this embodiment, when it is necessary to clamp a hollow workpiece, the user can place the side wall of the workpiece on the clamping layer 5. Since the clamping layer 5 is located between the fixed block 3 and the adjustment block 4, the outer and inner sides of the side wall of the workpiece will be clamped between the adjustment block 4 and the fixed block 3 in the clamping layer 5 respectively, thereby realizing the stable clamping of the hollow workpiece;

[0024] Secondly, since the adjustment block 4 can perform reciprocating movement in the horizontal direction on the clamping layer 5 to change the distance between the adjustment block 4 and the fixed block 3. When the distance between the two shortens, the clamping layer 5 will shorten; when the distance between the two expands, the clamping layer 5 will expand. Thus, the clamping force can be adjusted according to the actual situation of the workpiece to adapt to hollow workpieces of different sizes and shapes.

[0025] In order to further enhance the clamping stability, the side of the fixed block 3 facing the adjustment block 4 is arranged in an arc surface structure. As Figure 1 shown, the arc surface protrudes towards the side of the adjustment block 4. This setting can better fit the shape of the annular workpiece and reduce the risk of damage to the workpiece during clamping.

[0026] At the clamping area between the adjusting block 4 and the clamping layer 5, there are positioning holes 8 and positioning posts 9 for fixing the adjusting block 4. Through the cooperation of the positioning holes 8 and the positioning posts 9, the adjusting block 4 can be fixed at the desired position, ensuring uniform distribution of the clamping force and preventing the workpiece from shifting or being damaged during clamping;

[0027] In one embodiment, the inner wall of the positioning hole 8 and the surface of the positioning post 9 are provided with corresponding threads.

[0028] Furthermore, in order to further improve the fixing effect on the hollow workpiece, the present utility model further includes a pressing block. Specifically, a pressing block for pressing the top of the workpiece and a connecting top layer 7 for connecting with the pressing block are provided at the top of the adjusting block 4. The pressing blocks 7 are distributed in parallel above the clamping layer 5. After the adjusting block 4 and the fixing block 3 clamp the side wall of the workpiece on the clamping layer 5, the user can install the pressing block on the connecting top layer 7 so that the pressing block can fit on the top of the workpiece to prevent the workpiece from falling off the tooth-locking structure;

[0029] Exemplarily, the pressing block is a rectangular plate body, and corresponding threaded holes are provided between the pressing block and the connecting top layer 7. Through the cooperation of the threaded holes and screws, the pressing block can be fixed on the connecting top layer 7 to achieve the purpose of fitting the pressing block on the top of the workpiece.

[0030] When clamping a solid workpiece, the outer wall of the workpiece can be clamped through the abutting layer 6. Specifically, a stepped abutting layer 6 is provided on the side of the fixing block 3 away from the adjusting block 4. The user only needs to bring the outer wall of the workpiece into contact with one of the stepped surfaces in the abutting layer 6 to clamp the workpiece;

[0031] Furthermore, as Figure 1 shown, the stepped height of the abutting layer 6 gradually decreases towards the center of the disk body 1, and the thickness of each stepped surface also gradually decreases towards the center of the disk body 1. Therefore, the user can select stepped surfaces with different heights to clamp workpieces with different thicknesses, improving the versatility of the tooth-locking structure;

[0032] Exemplarily, when clamping a thinner workpiece, the user can select the lower stepped surface closer to the center in the abutting layer 6 for clamping. Since the height of this stepped surface is lower, it can meet the clamping requirements of the thin workpiece and ensure that the workpiece will not be deformed due to excessive clamping force during processing. For a thicker workpiece, the user can select the higher stepped surface away from the center for clamping. Since the height of these stepped surfaces is higher, it can provide sufficient clamping space to ensure that the thick workpiece can be firmly fixed in place.

[0033] In addition, in order to further improve the stability and safety of clamping, each stepped surface of the abutting layer 6 is designed with anti-slip textures. These textures can be small grooves, protrusions or other forms of rough surfaces to increase the friction between the workpiece and the stepped surface and prevent the workpiece from slipping during the machining process. At the same time, the design of the anti-slip textures also helps to disperse the clamping force and avoid damaging the surface of the workpiece.

[0034] Through the above technical solution, the present utility model proposes an improved chuck tooth structure, aiming to solve the problem that the existing three-jaw chuck may damage the workpiece when clamping a hollow workpiece. Its working principle is that the structure includes a main board 2, a fixing block 3, an adjusting block 4 and a clamping layer 5. Among them, the adjusting block 4 can perform reciprocating motion in the horizontal direction on the clamping layer 5 to adapt to hollow workpieces of different sizes and shapes. The arc surface structures of the fixing block 3 and the adjusting block 4 are designed to help fit the circular workpiece and reduce the risk of damage. Through the cooperation of the positioning holes 8 and the positioning posts 9, the adjusting block 4 can be fixed at the required position to ensure uniform distribution of the clamping force. In addition, it also includes an extrusion block and a connecting top layer 7 to prevent the workpiece from falling off the chuck tooth structure. For solid workpieces, they are clamped through the stepped abutting layer 6 to improve the versatility of the chuck tooth structure. Overall, this technical solution improves the clamping stability and reduces the possibility of workpiece damage.

[0035] Embodiment 2, on the basis of Embodiment 1, the present utility model further includes a chuck structure with the above chuck tooth structure. Refer to Figure 1 - Figure 2 , including a disk body 1, a clamping groove 11 and a chuck tooth structure. Among them, the clamping groove 11 is opened at the top of the disk body 1. The main board 2 is movably clamped in the clamping groove 11. The side of the fixing block 3 provided with the abutting layer 6 faces the center of the disk body 1. One end of the main board 2 provided with the adjusting block 4 extends to the outside of the disk body 1. Both sides of the main board 2 are provided with clamping blocks 10, and clamping grooves 12 corresponding to the clamping blocks 10 are opened on the inner walls on both sides of the clamping groove 11;

[0036] In this embodiment, the disk body 1 is used to support the workpiece to be clamped. When clamping the workpiece, the user can place the workpiece at the center of the disk body 1. Subsequently, the chuck tooth structure can move towards the center of the disk body 1 in the clamping groove 11 to achieve the purpose of clamping the workpiece;

[0037] Exemplarily, at least three chuck tooth structures are provided on the top of the disk body 1, and the three chuck tooth structures divide the disk body 1 into three equal parts. After selecting the stepped surface matching the workpiece, the three chuck tooth structures can move towards the center of the disk body 1 simultaneously until the workpiece is in close contact with the stepped surface to clamp the workpiece from three directions;

[0038] It can be understood that the chuck structure further includes a hydraulic or pneumatic driving device for moving the tooth structure within the clamping groove 11, so as to achieve the purpose of automatically adjusting the position of the tooth structure to clamp the workpiece. This is a conventional technical means for driving the jaws of the existing three-jaw chuck, so it will not be elaborated here.

[0039] In addition, the matching design of the clamping block 10 and the clamping groove 12 enables the main board 2 to be more stable within the clamping groove 11, preventing unnecessary movement of the tooth structure during movement and clamping.

[0040] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An improved ratchet tooth structure, characterized in that, It includes a main board (2). At both ends of the top of the main board (2), there are parallel fixed blocks (3) and adjusting blocks (4). Among them, on one side of the fixed block (3) facing the adjusting block (4), there is a clamping layer (5) for clamping the workpiece. The adjusting block (4) is movably clamped on the clamping layer (5), and the adjusting block (4) can make a reciprocating motion in the horizontal direction on the clamping layer (5).

2. The improved tooth structure according to claim 1, wherein One side of the fixed block (3) facing the adjusting block (4) is arranged in an arc surface structure, and the arc surface protrudes towards the adjusting block (4).

3. The improved tooth structure according to claim 1, characterized in that, At the clamping position of the adjusting block (4) and the clamping layer (5), there are a positioning hole (8) and a positioning post (9) for fixing the adjusting block (4).

4. The improved tooth structure according to claim 1, characterized in that, On the side of the fixed block (3) away from the adjusting block (4), there is a stepped abutting layer (6).

5. The improved tooth structure according to claim 1, characterized in that, On the top of the adjusting block (4), there is an extrusion block for extruding the top of the workpiece, and a connecting top layer (7) for connecting with the extrusion block. Among them, the extrusion blocks are parallelly distributed above the clamping layer (5).

6. The improved gear tooth structure according to claim 5, characterized in that, The extrusion block is a rectangular plate body, and there are corresponding threaded holes between the extrusion block and the connecting top layer (7).

7. A chuck assembly, characterized in that, It includes a disk body (1), a clamping groove (11), and an improved tooth structure as described in any one of claims 1-6. Among them, the clamping groove (11) is opened at the top of the disk body (1). The main board (2) is movably clamped in the clamping groove (11). The side of the fixed block (3) with the abutting layer (6) faces the center of the disk body (1). One end of the main board (2) with the adjusting block (4) extends to the outside of the disk body (1).

8. The chuck assembly according to claim 7, wherein, On both sides of the main board (2), there are clamping blocks (10), and on the inner walls of both sides of the clamping groove (11), there are clamping grooves (12) corresponding to the clamping blocks (10).

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