Self-centering jaw
By designing a bidirectional motion mechanism of the self-centering jaw, the problem of unstable position of the existing vise when the workpiece blank size changes, and the workpiece positioning accuracy is maintained and the processing efficiency is improved.
Patent Information
- Application Number
- CN202421237300.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
During the workpiece processing, the position of the workpiece relative to the blank changes due to the change in the size of the workpiece blank, which affects the processing accuracy and stability.
A self-centering jaw is designed, including a base, a first movable jaw and a second movable jaw. Through the cooperation of the screw and the mounting block, the two movable jaws are realized to ensure that the workpiece is relative to the blank. The axial position remains unchanged.
Through the movable jaws that move bidirectionally, maintain the positioning accuracy of the workpiece, avoid position deviation or deformation, improve the consistency and repetition of processing, improve work efficiency and reduce downtime in production.
Smart Images
Figure CN222430456U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vises, in particular to a self-centering jaw. Background Art
[0002] A vise is an industrial fixture, also known as a machine tool vise. It is a device used to clamp workpieces. It is mainly used for positioning and fixing workpieces during mechanical processing. A vise usually consists of a clamp body, movable jaws and fixed jaws. A vise is needed when performing workpiece processing.
[0003] The existing vise is unilaterally movable, with the fixed jaw not moving and the movable jaw moving. When processing the workpiece, the change in the size of the workpiece blank will affect the position of the workpiece relative to the blank, and affect the processing accuracy and stability, which is inconvenient to use. Utility Model Content
[0004] The utility model aims to solve the shortcomings of the prior art that the existing vise has unilateral movement, the fixed jaw does not move, and the movable jaw moves. When the workpiece is processed, the change of the size of the workpiece blank will affect the position of the workpiece relative to the blank, and affect the processing accuracy and stability, which is inconvenient to use. A self-centering jaw is proposed to solve the shortcomings that the prior art vise has unilateral movement, the fixed jaw does not move, and the movable jaw moves. When the workpiece is processed, the change of the size of the workpiece blank will affect the position of the workpiece relative to the blank, and affect the processing accuracy and stability, and is inconvenient to use.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A self-centering jaw comprises a base, a first movable jaw and a second movable jaw, wherein a guide rail is provided on the top of the inner wall of the base, and the first movable jaw and the second movable jaw are slidably fitted on the guide rail. The self-centering jaw also comprises a lead screw and a mounting block, wherein a smooth rod section is provided in the middle of the lead screw, and the mounting block is located at the center of the surface of the base, and a mounting groove is provided on the mounting block, and the smooth rod section is fitted in the mounting groove.
[0007] Preferably, holes are opened on the first movable jaw and the second movable jaw, and two nuts on the screw rod are respectively matched with the first movable jaw and the second movable jaw.
[0008] Preferably, the base is in a "concave" shape, and the guide rails are located on the left and right sides above the inner wall of the base recess.
[0009] Preferably, the guide rail is composed of a plane and a triangular groove, and the mounting block is vertically arranged at the bottom of the inner wall of the base.
[0010] Preferably, two rows of threaded holes are provided on the bottom of the base.
[0011] The utility model has the following beneficial effects:
[0012] The utility model cooperates with the lead screw, the first movable jaw and the second movable jaw. When processing a workpiece, the first movable jaw and the second movable jaw can perform bidirectional movement. The two movable jaws move simultaneously. When the size of the workpiece blank changes, the axial position of the workpiece relative to the blank can be guaranteed to remain unchanged, thereby maintaining the positioning accuracy of the workpiece, avoiding position offset or deformation during the processing, improving the consistency and repeatability of the processing, improving work efficiency, and reducing downtime in production. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is one of the overall structural schematic diagrams of a self-centering jaw proposed by the utility model;
[0014] Figure 2 This is a schematic cross-sectional view of a self-centering jaw proposed by the utility model;
[0015] Figure 3 A schematic diagram of the base structure of a self-centering jaw proposed by the utility model;
[0016] Figure 4 This is the second schematic diagram of the overall structure of a self-centering jaw proposed by the utility model;
[0017] Figure 5 This is the third overall structural schematic diagram of a self-centering jaw proposed by the utility model.
[0018] In the figure: 1. base; 2. guide rail; 3. mounting block; 4. screw rod; 5. first movable jaw; 6. second movable jaw; 7. threaded hole. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] Reference Figure 1-5 A self-centering jaw comprises a base 1, a first movable jaw 5 and a second movable jaw 6. A guide rail 2 is provided on the top of the inner wall of the base 1. The first movable jaw 5 and the second movable jaw 6 are slidably matched on the guide rail 2. The base 1 is in a "concave" shape. The guide rail 2 is located on the left and right sides above the inner wall of the concave of the base 1, which has better balance and symmetry. The guide rail 2 can evenly withstand external forces and pressures, provide more stable guidance and movement, and make the first movable jaw 5 and the second movable jaw 6 less likely to deform and vibrate during movement, thereby improving stability. The guide rail 2 is composed of a plane and a triangular groove, and has good durability.
[0021] The middle part of the screw rod 4 has a smooth rod section, the length of the screw rod 4 matches the length of the inner wall of the base 1, the mounting block 3 is located at the center of the surface of the base 1, the mounting block 3 is provided with a mounting groove, the smooth rod section fits in the mounting groove, the bottom of the inner wall of the base 1 is fixedly connected to the mounting block 3, the mounting block 3 is vertically arranged at the bottom of the inner wall of the base 1, the interior of the base 1 is simple and flat, and it is not easy to be blocked by dust and debris produced by workpiece processing;
[0022] The first movable jaw 5 and the second movable jaw 6 are provided with holes, and the two nuts on the screw rod 4 are respectively matched with the first movable jaw 5 and the second movable jaw 6. The positions and tightness of the two movable jaws are adjusted on the screw rod 4 to achieve fine adjustment and positioning of the movable jaws, improve the accuracy and control of the work, and meet different work requirements and needs;
[0023] The bottom of the base 1 is provided with threaded holes 7, and the six threaded holes 7 are evenly distributed in groups of three on the left and right sides of the bottom of the base 1, providing better stability and balance, evenly distributing the load and force, providing better support and stability, and being suitable for use in five-axis machine tools;
[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when using the device, first place the device at the designated working position, and cooperate with the screw rod 4, the first movable jaw 5 and the second movable jaw 6. When processing the workpiece, the first movable jaw 5 and the second movable jaw 6 can perform bidirectional movement on the screw rod 4, and the two movable jaws move simultaneously. When the size of the workpiece blank changes, the axial position of the workpiece relative to the blank can be ensured to remain unchanged, thereby maintaining the positioning accuracy of the workpiece, avoiding positional offset or deformation during the processing, improving the consistency and repeatability of the processing, improving work efficiency, and reducing downtime in production.
[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A self-centering jaw, comprising a base (1), a first movable jaw (5) and a second movable jaw (6), characterized in that: The base (1) is provided with a guide rail (2) at the top of the inner wall, and the first movable jaw (5) and the second movable jaw (6) are slidably fitted on the guide rail (2). The base also includes: a screw rod (4) and a mounting block (3), wherein the middle part of the screw rod (4) has a smooth rod section, and the mounting block (3) is located at the center of the surface of the base (1), and a mounting groove is provided on the mounting block (3), and the smooth rod section is fitted in the mounting groove.
2. A self-centering jaw according to claim 1, characterized in that: The first movable jaw (5) and the second movable jaw (6) are provided with holes, and the two nuts on the screw rod (4) are respectively matched with the first movable jaw (5) and the second movable jaw (6).
3. A self-centering jaw according to claim 1, characterized in that: The base (1) is in the shape of a Chinese character "concave", and the guide rails (2) are located on the left and right sides above the inner wall of the concave opening of the base (1).
4. A self-centering jaw according to claim 1, characterized in that: The guide rail (2) is composed of a plane and a triangular groove, and the mounting block (3) is vertically arranged at the bottom of the inner wall of the base (1).
5. A self-centering jaw according to claim 1, characterized in that: Two rows of threaded holes (7) are provided at the bottom of the base (1).