Multi-axis machine tool fixture

Abstract

The utility model provides a multi-shaft machine tool fixture. The multi-shaft machine tool fixture comprises a fixture body and four puller screws, the clamp body comprises a circular ring part at the rear part and a C-shaped part at the front part; a first locking hole is formed in one side, corresponding to the notch of the C-shaped part, of the circular part, and a second locking hole is formed in one side, opposite to the first locking hole, of the circular part; a third locking hole and a fourth locking hole are respectively formed in opposite positions of two wing parts forming the C-shaped part; each locking hole is internally provided with the corresponding jacking screw; the side exposed space of the C-shaped part is a side processing space; and the end part of the circular part is arranged as a machine tool connecting end and is provided with a corresponding connecting structure. The multi-axis machine tool fixture has the advantages of being good in clamping universality and relatively sufficient in machining space.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and more specifically, to a multi-axis machine tool fixture. Background Technology

[0002] Multi-axis machine tools are a type of high-end machine tool developed based on complex machining. They generally refer to the addition of more rotary axes in addition to the traditional three axes, thereby realizing multi-axis motion. Their feature is that they can process workpieces from multiple angles, and have relatively higher flexibility.

[0003] This type of machine tool is particularly suitable for machining small shaft-type parts.

[0004] Due to the high flexibility of such machine tools, requirements are also placed on the clamping fixtures for workpieces. The fixtures of multi-axis machine tools usually only clamp one end of the workpiece to ensure that the machine head can perform multi-angle processing on the workpiece. However, the clamping stability of shaft components requires clamping from all sides of the shaft. If the shaft is slightly longer, it is easy to be unstable in clamping, especially when drilling holes on the side, it is difficult to ensure the stability of the workpiece.

[0005] If most of the workpiece is clamped and stabilized around its perimeter, the drilling area will be blocked, affecting the operation of the machine head.

[0006] Therefore, the task of drilling holes on the side of shaft components is usually still carried out using old-fashioned machine tools. The two ends of the shaft components are clamped and fixed, and then holes are drilled on the side, which leads to poor compatibility with multi-axis machine tools.

[0007] To solve this problem, a new type of fixture needs to be developed that combines the advantages of traditional clamping with the ability to provide more machining space. Utility Model Content

[0008] The purpose of this utility model is to address the shortcomings of existing technologies by providing a multi-axis machine tool fixture with better clamping versatility and more ample processing space.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a multi-axis machine tool fixture, including a fixture body and four clamping screws;

[0010] The clamping body includes a rear annular portion and a front C-shaped portion;

[0011] A first locking hole is provided on one side of the annular portion corresponding to the notch of the C-shaped portion, and a second locking hole is provided on the side of the annular portion opposite to the first locking hole;

[0012] A third locking hole and a fourth locking hole are respectively provided at the relative positions of the two wings that constitute the C-shaped part;

[0013] Each locking hole is equipped with the aforementioned tightening screw;

[0014] The exposed space on the side of the C-shaped part is the side processing space;

[0015] The end of the annular portion is configured as a machine tool connection end and is provided with a corresponding connection structure.

[0016] Preferably, the first locking hole and the second locking hole are on the same straight line.

[0017] Preferably, the third locking hole and the fourth locking hole are on the same straight line.

[0018] Preferably, the straight line where the first and second locking holes are located is perpendicular to the straight line where the third and fourth locking holes are located.

[0019] Preferably, the clamp is a one-piece molded structure.

[0020] Preferably, the clamp is a steel pipe structure with a notched corner.

[0021] Preferably, the ratio of the length of the annular portion to the length of the C-shaped portion along the axial direction is between 1:3 and 1:5.

[0022] Preferably, a thickened nut coaxial with each locking hole is welded and fixed to the outside of each locking hole of the clamp body.

[0023] Preferably, the front end face of the C-shaped portion is an arc surface.

[0024] Preferably, the front end of the tightening screw is configured as an arc surface.

[0025] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model has the following advantages:

[0026] This utility model innovatively designs a new type of clamp. When clamping shaft-like components, the first and second locking holes, together with the tightening screw, can clamp the tail end of the shaft-like component in the front-to-back direction. The third and fourth locking holes, together with the tightening screw, can clamp the middle part of the shaft-like component in the left-to-right direction, achieving four-way locking. Since the rear and middle parts have a certain span, this four-way positioning method can ensure the overall stability of the shaft-like component, thereby preventing the shaft-like component from shifting. At this time, the notch side of the C-shaped part is exposed, and a multi-axis machine tool can be used directly to drill the side hole, solving the problem that single-end clamping fixtures cannot meet the requirements for side hole drilling. Attached Figure Description

[0027] Figure 1 This is one of the overall structural schematic diagrams of a multi-axis machine tool fixture in this utility model.

[0028] Figure 2 This is the second schematic diagram of the overall structure of a multi-axis machine tool fixture in this utility model.

[0029] Figure 3 This is a top view of a multi-axis machine tool fixture according to this utility model.

[0030] In the figure: 1. Clamp body; 2. Tightening screw; 11. Circular part; 12. C-shaped part; 13. Machine tool connection end; 21. First locking hole; 22. Second locking hole; 23. Third locking hole; 24. Fourth locking hole; 25. Thickened nut. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0032] like Figures 1-3 As shown, a multi-axis machine tool fixture includes a fixture body 1 and four clamping screws 2.

[0033] The clamping body includes a rear annular portion 11 and a front C-shaped portion 12.

[0034] A first locking hole 21 is provided on one side of the annular portion 11 corresponding to the C-shaped notch, and a second locking hole 22 is provided on the side of the annular portion 11 opposite to the first locking hole 21. In this embodiment, the first locking hole 21 and the second locking hole 22 are on the same straight line, and a tightening screw 2 is installed on each of them to clamp the tail end from the front and rear direction of the rear end of the shaft component.

[0035] A third locking hole 23 and a fourth locking hole 24 are respectively provided at the relative positions of the two wings constituting the C-shaped part 12. In this embodiment, the third locking hole 23 and the fourth locking hole 24 are on the same straight line and perpendicular to the straight line where the first locking hole 21 and the second locking hole 22 are located, thereby realizing four-way locking.

[0036] The front end of the tightening screw 2 is set as an arc surface, which is used to lock the workpiece in place with the workpiece surface.

[0037] The exposed space on the side of the C-shaped part 12 is a side machining space, from which the head of the multi-axis machine tool can drill holes on the side of the workpiece.

[0038] The end of the annular portion 11 is configured as a machine tool connection end 13 and is provided with a corresponding connection structure, which is a flange structure in this embodiment.

[0039] To ensure the consistency of the fixture, the fixture body 1 is a one-piece molded structure. The fixture body is a steel pipe structure with a missing corner, which is formed by cutting off one corner of the steel pipe with a tool. The ratio of the length of the ring part 11 to the length of the C-shaped part 12 along the axial direction is between 1:3 and 1:5.

[0040] To ensure clamping stability, thickened nuts 25, coaxial with each locking hole, are welded and fixed to the outside of each locking hole of the clamping body.

[0041] To avoid interference with the movement of the machine head and to reduce the structure of sharp angles, in a preferred embodiment, the front end face of the C-shaped part is an arc surface.

[0042] Working principle explanation:

[0043] This fixture is mainly used for mass production and assembly line operations when machining single-point structures of holes on the side of shaft parts in batches.

[0044] In use, one end of the shaft component is clamped into the fixture. The first and second locking holes, together with the tightening screw 2, clamp the tail end of the workpiece in the front-to-back direction. The third and fourth locking holes, together with the tightening screw 2, clamp the middle part of the workpiece in the left-to-right direction. Then, the side end single-point structure can be processed, such as hole processing.

[0045] After machining is completed, remove the workpiece and rotate it to machine other holes. If there is only a single hole, continue machining the next workpiece.

[0046] This fixture solves the problem of multi-axis machine tools having difficulty performing side single-hole machining when clamping workpieces at one end.

[0047] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A multi-axis machine tool fixture, characterized in that: Includes the clamping body and four locking screws; The clamping body includes a rear annular portion and a front C-shaped portion; A first locking hole is provided on one side of the annular portion corresponding to the notch of the C-shaped portion, and a second locking hole is provided on the side of the annular portion opposite to the first locking hole; A third locking hole and a fourth locking hole are respectively provided at the relative positions of the two wings that constitute the C-shaped part; Each locking hole is equipped with the aforementioned tightening screw; The exposed space on the side of the C-shaped part is the side processing space; The end of the annular portion is configured as a machine tool connection end and is provided with a corresponding connection structure.

2. The multi-axis machine tool fixture according to claim 1, characterized in that: The first locking hole and the second locking hole are on the same straight line.

3. The multi-axis machine tool fixture according to claim 2, characterized in that: The third and fourth locking holes are aligned on the same straight line.

4. The multi-axis machine tool fixture according to claim 3, characterized in that: The straight line containing the first and second locking holes is perpendicular to the straight line containing the third and fourth locking holes.

5. The multi-axis machine tool fixture according to claim 4, characterized in that: The clamp is a one-piece molded structure.

6. The multi-axis machine tool fixture according to claim 5, characterized in that: The clamp is a steel pipe structure with a notched corner.

7. The multi-axis machine tool fixture according to claim 6, characterized in that: The ratio of the length of the annular portion to the length of the C-shaped portion along the axial direction is between 1:3 and 1:

5.

8. The multi-axis machine tool fixture according to claim 7, characterized in that: Thickened nuts, coaxial with each locking hole, are welded and fixed to the outside of each locking hole of the clamp body.

9. The multi-axis machine tool fixture according to claim 8, characterized in that: The front end face of the C-shaped part is an arc surface.

10. The multi-axis machine tool fixture according to claim 9, characterized in that: The front end of the tightening screw is set as an arc surface.

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