Clamp capable of preventing clamping deformation
By designing a clamping fixture to prevent deformation during clamping, and using a clamping body and square-headed bolt structure, the part can be aligned and deformation prevented during clamping. This solves the problem of part mouth deformation during the machining of artillery sleeve parts, and improves machining quality and precision.
Patent Information
- Application Number
- CN202423276128.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
When artillery parts are machined on an internal hole broaching machine, the clamping deformation of the part's opening leads to a decrease in machining quality, and existing technologies cannot effectively prevent clamping deformation.
Design a clamping fixture to prevent deformation during clamping. It adopts a clamping body and square head bolt structure. It avoids direct force on the parts by clamping through eight evenly distributed contact points. It achieves the alignment function by indirectly clamping the fixture with the machine tool bracket.
It effectively prevents parts from deforming during clamping, ensures the accuracy of machining dimensions, reduces deformation during clamping, has a simple structure, is easy to operate, and meets production needs.
Smart Images
Figure CN223588853U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of anti-clamping deformation clamps, belong to mechanical technical field. BACKGROUND
[0002] When the inner hole broaching of the barrel part in artillery is carried out, the part needs to be aligned, and the gap between the cutter body and the inner hole of the part to be processed after alignment should be kept between 0.025 and 0.04 (in the radial direction) and the part opening should be prevented from deformation during clamping.
[0003] In the original processing of the part, the part opening is clamped by directly clamping the outer diameter of the part opening through the machine tool bracket, which causes deformation of the part opening during clamping and changes the roundness of the part opening, directly affecting the processing quality of the part. UTILITY MODEL CONTENT
[0004] In order to overcome the shortcomings of the prior art, the utility model provides an anti-clamping deformation clamp, which can realize the functions of pre-clamping alignment and prevention of part clamping deformation.
[0005] The utility model solves the technical problems by adopting the following technical scheme: an anti-clamping deformation clamp includes a clamp body, square head bolts I and square head bolts II, the clamp body is an annular workpiece, two square head bolts I are threadedly connected to the upper and lower sides of the clamp body, and the two square head bolts I on each side are arranged on the same horizontal line and are spaced apart; two square head bolts II are threadedly connected to the left and right sides of the clamp body, and the two square head bolts II on each side are arranged on the same horizontal line and are spaced apart.
[0006] Further, the two square head bolts I and the two square head bolts II on the front side of the clamp body are on the same vertical plane, and the two square head bolts I and the two square head bolts II on the back side of the clamp body are on the same vertical plane.
[0007] The utility model has the advantages that the utility model can realize the functions of pre-clamping alignment and prevention of part clamping deformation, the clamp structure design ensures the dimensional accuracy of part processing, reduces deformation during part clamping, is easy to operate, and has special properties; this clamp not only meets the use requirements, but also has small manufacturing difficulty, reasonable structure and easy operation, and has been effectively applied in production. BRIEF DESCRIPTION OF DRAWINGS
[0008] The utility model will be further described below in combination with the drawings and specific embodiments.
[0009] Figure 1 It is the front view of the utility model.
[0010] Figure 2 is Figure 1 A-A to the schematic view.
[0011] Figure 3 is the schematic view of the clamp body of the utility model.
[0012] Figure 4 is the schematic view of the square head bolt I of the utility model.
[0013] Figure 5 is the schematic view of the square head bolt II of the utility model.
[0014] Figure 6 is Figure 5 the side view.
[0015] Figure 7 is the schematic view of the utility model working.
[0016] Figure 8 is the sketch of the part and clamping positioning position.
[0017] Marked in the figure:
[0018] 1, clamp body, 2, square head bolt I, 3, part 4, bracket 5. Specific embodiments
[0019] As Figure 1 -7 shows, a kind of anti-deformation clamp, including clamp body 1, square head bolt I 2 and square head bolt II 3, the clamp body 1 is a annular workpiece, clamp body 1 upper and lower sides are threadedly connected with two square head bolts I 2, two square head bolts I 2 of each side are in the same horizontal straight line and interval arrangement;Clamp body 1 left and right sides are threadedly connected with two square head bolts II 3, two square head bolts II 3 of each side are in the same horizontal straight line and interval arrangement.
[0020] Two square head bolts I 2 and two square head bolts II 3 of the front side of clamp body 1 are in the same vertical plane, two square head bolts I 2 and two square head bolts II 3 of the back side of clamp body 1 are in the same vertical plane.
[0021] The clamp body 1 is heat treated with 45 steel, with a hardness of 55-57 HRC, an outer diameter of φ280 matching the bracket 5 on the machine tool, an inner diameter of φ220 and a length of 310 matching the clamping and positioning dimensions of the part 4, wherein the inner diameter maintains a certain gap with the part 4; the square head bolts I2 and II 3 are both made of 45 round steel, with a thread diameter of M22, wherein the four square head bolts I2 are assembled in place with the clamp body 1 and are fixed by spot riveting, serving to support the part 4; the square head bolts II 3 can be moved, so that the contact distance between them and the part 4 can be adjusted to complete the clamping of the part 4, and the contact area when clamping the part 4 is reduced to prevent the part 4 from deforming during clamping; the clamp has only eight points of uniform contact with the part 4, and when the machine tool bracket 5 clamps and aligns the part 4, the clamp is directly clamped and the part 4 is not directly stressed, greatly reducing the deformation of the part 4 during clamping; the entire clamp is clamped and cooperates with the aligner and other tools to complete the alignment of the part 4 before machining, and the structure and matching dimensions of the clamp body 1, square head bolts I2 and II 3 are designed according to the characteristics and dimensions of the clamped part.
[0022] In use, the clamp body 1 is first placed on the machine tool clamping part opening bracket 5, with the arc surface end of the square head bolt I2 facing down; the part 4 is hung on the machine tool, at which time the opening slowly passes through the inside of the clamp body 1 and is adjusted to be in position; the square head bolt II 3 is screwed onto the clamp body 1 and is screwed until it comes into contact with the part 4, and is tightened with force; at this time, the part 4 and the clamp body 1 can be considered as a whole, and then the part 4 is clamped and aligned, at which time the clamping force acts on the clamp and has no direct contact with the part 4, and the clamping force is evenly applied to the part 4 through the clamp bolts, thereby greatly reducing the deformation of the opening of the part 4.
Claims
1. A fixture for preventing clamp deformation, characterized by: The utility model relates to a clamp body (1), square head bolt I (2) and square head bolt II (3), the clamp body (1) is a ring work piece, and two square head bolt I (2) are connected on the upper and lower sides of clamp body (1) threadedly, and the two square head bolt I (2) of each side are on the same horizontal straight line and interval arrangement, and two square head bolt II (3) are connected on the left and right sides of clamp body (1) threadedly, and the two square head bolt II (3) of each side are on the same horizontal straight line and interval arrangement.
2. A fixture according to claim 1, wherein: The two square head bolt I (2) and two square head bolt II (3) of the front side on the clamp body (1) are on the same vertical plane, and the two square head bolt I (2) and two square head bolt II (3) of the back side on the clamp body (1) are on the same vertical plane.