A four-axis rotary self-centering fixture
The four-axis rotary self-centering fixture solves the problems of low clamping efficiency and cumulative errors in traditional machine tools by clamping multiple workpieces at once and using the machine tool chuck to rotate, thus achieving efficient and precise machining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUFENG TECH (XIAN) CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional machine tool clamping methods are inefficient and prone to introducing cumulative errors, which affect machining accuracy.
A four-axis rotary self-centering fixture is used to clamp multiple workpieces at once through a rotating body and multiple clamping components, and the rotating body is driven to rotate by the machine tool chuck for processing.
It improved processing efficiency, reduced cumulative errors, and enhanced processing accuracy.
Smart Images
Figure CN224273353U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of machine tool furniture technology, and in particular to a four-axis rotary self-centering fixture. Background Technology
[0002] Clamping is an indispensable step in machine tool machining. Traditional clamping methods typically involve directly clamping the workpiece onto the machine tool's chuck and then machining it using cutting tools. However, this single-workpiece clamping and machining method has significant efficiency limitations. Only one workpiece can be clamped at a time, and after machining one workpiece, the next workpiece needs to be clamped. This not only consumes a significant amount of clamping time but also easily introduces cumulative errors from multiple clamping operations, affecting machining accuracy. Utility Model Content
[0003] This application provides a four-axis rotary self-centering fixture, which solves the technical problems of low efficiency and easy introduction of cumulative errors in single-piece clamping and processing. It enables the clamping and processing of multiple workpieces at once, avoids frequent clamping work, improves work efficiency, and reduces cumulative errors.
[0004] The four-axis rotary self-centering fixture provided in this application includes: a rotating body having multiple supporting surfaces; multiple clamping assemblies respectively connected to the multiple supporting surfaces; wherein each clamping assembly includes a first clamping block, a second clamping block, and a fastening assembly; the first clamping block is fixedly connected to the supporting surface; the fastening assembly is connected to the first clamping block and the second clamping block and is configured to fix the position of the second clamping block when the first clamping block and the second clamping block clamp a workpiece.
[0005] In one possible implementation, the second clamping block can slide against the support surface.
[0006] In one possible implementation, the side of the first clamping block facing away from the second clamping block is flush with the adjacent support surface; the second clamping block is slidably abutting against the side of the first clamping block that is flush with the support surface.
[0007] In one possible implementation, the first clamping block is integrally connected to the rotating body.
[0008] In one possible implementation, the second clamping block has a guide hole; each clamping assembly further includes a guide rod, which is slidably disposed in the guide hole, and one end of the guide rod is fixedly connected to the first clamping block.
[0009] In one possible implementation, the four-axis rotary self-centering fixture further includes a flange connected to one end of the rotating body and coaxially arranged with the rotating body.
[0010] The technical solutions provided in this application embodiment have at least the following technical effects:
[0011] This application provides a four-axis rotary self-centering fixture, which includes a rotating body and multiple clamping assemblies. Each clamping assembly includes a first clamping block, a second clamping block, and a fastening assembly. When using this four-axis rotary self-centering fixture to fix workpieces, multiple workpieces are mounted on the multiple clamping assemblies. The first and second clamping blocks fix the workpieces in place, and the fastening assembly fixes the positions of the first and second clamping blocks. This four-axis rotary self-centering fixture can clamp multiple workpieces at once, and the machine tool chuck fixes the four-axis rotary self-centering fixture. The machine tool chuck drives the rotating body to rotate, enabling the machine tool to process multiple workpieces in a single clamping operation, reducing cumulative errors. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of the four-axis rotary self-centering fixture provided in the embodiments of this application;
[0014] Figure 2 A schematic diagram of a four-axis rotary self-centering fixture used in an embodiment of this application to hold multiple workpieces;
[0015] Figure 3 This is a schematic diagram of a four-axis rotary self-centering fixture installed on a machine tool according to an embodiment of this application.
[0016] Reference numerals: 10-Rotating body; 11-Supporting surface; 20-Clamping assembly; 21-First clamping block; 22-Second clamping block; 23-Fastening assembly; 24-Guide rod; 30-Flange; 40-Workpiece; 50-Zero-point positioning kit; 60-Chuck; 70-Center. Detailed Implementation
[0017] Traditional machine tool clamping methods can only clamp one workpiece at a time. After machining one workpiece, the next workpiece needs to be clamped. This not only consumes a lot of clamping time, but also easily introduces cumulative errors due to multiple clamping, affecting machining accuracy. To solve the above technical problems, this application provides a four-axis rotary self-centering fixture.
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of this application 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, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installation" and "connection" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be direct connections or indirect connections through an intermediate medium, and they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0020] like Figure 1 and Figure 2 As shown, the four-axis rotary self-centering fixture includes a rotating body 10 and multiple clamping assemblies 20.
[0021] The rotating body 10 has multiple support surfaces 11. Multiple clamping assemblies 20 are respectively connected to the multiple support surfaces 11. Each clamping assembly 20 includes a first clamping block 21, a second clamping block 22, and a fastening assembly 23. The first clamping block 21 is fixedly connected to the support surface 11. The fastening assembly 23 is connected to the first clamping block 21 and the second clamping block 22 and is configured to fix the position of the second clamping block 22 when the workpiece 40 is clamped by the first clamping block 21 and the second clamping block 22.
[0022] When using this four-axis rotary self-centering fixture to fix workpiece 40, multiple workpieces 40 are mounted on multiple clamping assemblies 20. The first clamping block 21 and the second clamping block 22 fix the workpiece 40, and the fastening assembly 23 fixes the positions of the first module and the second module. Figure 3 As shown, the four-axis rotary self-centering fixture can clamp multiple workpieces 40 at once, and the machine tool's chuck 60 fixes the four-axis rotary self-centering fixture. The machine tool's chuck 60 drives the rotating body 10 to rotate, so that the machine tool can process multiple workpieces 40 after one clamping, reducing cumulative errors.
[0023] In this embodiment, the second clamping block 22 slidably abuts against the support surface 11. When it is necessary to clamp the workpiece 40, the operator operates the second clamping block 22 to move it closer to the first clamping block 21 until the second clamping block 22 abuts against the workpiece 40. Then, fasteners are used to fix the positions of the first clamping block 21 and the second clamping block 22. When the workpiece 40 needs to be unloaded after processing, the operator removes the fasteners and moves the second clamping block 22 away from the first clamping block 21 until the distance between the second clamping block 22 and the first clamping block 21 is sufficient for the workpiece 40 to be unloaded.
[0024] Furthermore, the side of the first clamping block 21 facing away from the second clamping block 22 is flush with the adjacent support surface 11, and the second clamping block 22 can slide against the side of the first clamping block 21 that is flush with the support surface 11. The above structure allows the second clamping block 22 to slide a greater distance, thereby enabling the first clamping block 21 and the second clamping block 22 to clamp a larger workpiece 40.
[0025] For example, the first clamping block 21 is integrally connected to the rotating body 10. In other embodiments, the first clamping block 21 and the rotating body 10 may also be welded, bonded, or otherwise connected.
[0026] Continue to refer to Figure 1 In this embodiment of the application, the second clamping block 22 is provided with a guide hole; each clamping component 20 also includes a guide rod 24, which is slidably disposed in the guide hole, and one end of the guide rod 24 is fixedly connected to the first clamping block 21.
[0027] When the second clamping block 22 moves closer to or further away from the first clamping block 21, the guide rod 24 engages with the guide hole on the second clamping block 22 to guide the movement direction of the second clamping block 22.
[0028] Furthermore, such as Figure 2 As shown, the four-axis rotary self-centering fixture also includes a flange 30, which is connected to one end of the rotating body 10 and is coaxially arranged with the rotating body 10.
[0029] The flange 30 is used to facilitate the connection between the rotating body 10 and the chuck 60 of the machine tool. Specifically, the flange 30 is connected to the zero-point positioning kit 50, which is mounted on the chuck 60. For example, the flange 30 is bolted to the end of the rotating body 10.
[0030] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.
[0031] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.
Claims
1. A four-axis rotary self-centering fixture, characterized in that, include: A rotating body having multiple supporting surfaces; as well as A plurality of clamping assemblies are respectively connected to a plurality of support surfaces; wherein each clamping assembly includes a first clamping block, a second clamping block, and a fastening assembly; the first clamping block is fixedly connected to the support surface; the fastening assembly is connected to the first clamping block and the second clamping block and is configured to fix the position of the second clamping block when the first clamping block and the second clamping block clamp the workpiece.
2. The four-axis rotary self-centering fixture according to claim 1, characterized in that, The second clamping block can slide against the supporting surface.
3. The four-axis rotary self-centering fixture according to claim 1, characterized in that, The side of the first clamping block facing away from the second clamping block is flush with the adjacent support surface; The second clamping block can slide against the side of the first clamping block, which is flush with the support surface.
4. The four-axis rotary self-centering fixture according to claim 1, characterized in that, The first clamping block is integrally connected to the rotating body.
5. The four-axis rotary self-centering fixture according to claim 1, characterized in that, The second clamping block has a guide hole; Each of the clamping components further includes a guide rod that is slidably disposed within the guide hole, and one end of the guide rod is fixedly connected to the first clamping block.
6. The four-axis rotary self-centering fixture according to claim 1, characterized in that, Also includes: A flange is connected to one end of the rotating body and is coaxially arranged with the rotating body.