Long and thin square-head torsion bar pre-twisting tool
By designing a slender square-head torsion bar pre-torsion tooling comprising a base, a movable bracket, a rotating shaft, a fixed support, a pointer and a dial, the problems of complex structure and inconvenient operation of the existing torsion bar pre-torsion test tooling are solved, and efficient and simple operation of the torsion bar pre-torsion test is achieved.
Patent Information
- Application Number
- CN202422167641.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing torsion bar pre-torsion test fixture has a complex structure and is not easy to operate, and is prone to insufficient pre-torsion or over-torsion.
A pre-torsion fixture for a slender square-head torsion bar was designed, which included a base, a movable bracket, a rotating shaft, a fixed support, a pointer and a dial. The pre-torsion test of the torsion bar was realized through a simple structure and operation.
The working efficiency of the torsion bar pre-torsion test is improved, the structure is simple, the operation is easy, and the problem of insufficient pre-torsion or over-torsion is avoided.
Smart Images
Figure CN223346421U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a pre-twisting tool for a slender square-head torsion bar. Background Art
[0002] A torsion bar is a simple spring that uses the torsional deformation of a rod or strip to produce elastic action. It is characterized by large energy storage per unit volume, simple structure, and lightweight. It is widely used in vehicle suspension systems or the opening and closing of hatches and has a good cushioning effect. During assembly, one end is usually fixed and the other end is twisted to produce elastic action. Therefore, due to installation needs, the two ends of the torsion bar are generally processed into square, hexagonal, serrated teeth or splines. After heat treatment, such parts usually need to be pre-torsed to test the beneficial plastic deformation or torsional residual stress, so as to improve the elastic limit and torsional fatigue strength. The existing torsion test tooling is relatively complex and not easy to operate, and is prone to insufficient pre-torsion or over-torsion. Summary of the Invention
[0003] In order to solve the above technical problems, the utility model provides a pre-twisting tool for a slender square-head torsion bar.
[0004] The technical solution of the utility model is: a slender square head torsion bar pre-twisting tool, including a base, a movable bracket, a rotating shaft, a fixed support, a pointer, and a dial. The fixed support is fixed to the upper end surface of the base, the movable bracket is installed in a slide groove on the upper end surface of the base, the right-angled rotating shaft is installed on the fixed support, one end of the torsion bar is fixed in the movable support groove, and the other end is inserted into the rotating shaft, the socket wrench is inserted into the rotating shaft, and the pointer is fixed to the rotating shaft with a screw; a dial is provided on the upper part of the pointer, and the dial is fixed to the fixed support.
[0005] Furthermore, the base is an I-shaped structure, welded from steel plates, with four U-shaped grooves on the bottom for fixing to other workbenches, and a dovetail groove on the upper end for fixing the T-bolt connection between the support and the base.
[0006] Furthermore, the rotating shaft is assembled in the inner hole of the fixing bracket through an elastic snap ring and its square structure.
[0007] Furthermore, the safety shield is a steel plate with an Ω semicircular arc structure, and one leg is processed with two through holes.
[0008] The beneficial effects of the utility model are as follows: the torsion test tool provided by the utility model has a simple structure, is easy and convenient to operate, and improves the working efficiency of the torsion bar pre-twisting. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION
[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0011] like Figure 1 As shown, the utility model includes a movable bracket 1, a slide 2, a safety shield 3, a torsion bar 4, a dial 5, a pointer 6, a rotating shaft 7, a fixed support 8, a socket wrench 9, and a base 10; the base 10 is an I-shaped structure and is welded from steel plates. The upper surface of the base 10 is provided with a slide 2, the movable bracket 1 is installed in the slide 2 on the upper end face of the base, the fixed support 8 is fixed to the upper end face of the base 1, the rotating shaft 7 is installed on the fixed support, one end of the torsion bar 4 is fixed in the groove of the movable support 1, and the other end is inserted into the rotating shaft 7, the socket wrench 9 is inserted into the rotating shaft 7, and the pointer 6 is fixed to the rotating shaft 7 with screws; the upper part of the pointer 6 is provided with a dial 5, and the dial 5 is fixed to the fixed support 8.
[0012] The rotating shaft 7 is assembled in the inner hole of the fixed support 8 through the elastic clamping ring and its square structure. For torsion bars of different sizes, it is only necessary to replace the matching rotating shaft 7 and the movable support 1.
[0013] The movable bracket 1 moves longitudinally on the upper end surface of the base 10 , and the moving distance is adjusted according to the different lengths of the test torsion bar. After the position is adjusted, it is fixed by trapezoidal bolts.
[0014] The rotating shaft 7 is L-shaped in shape and is cylindrical. The outer diameter of the short cylinder matches the middle through hole of the fixed support 8. An annular groove is processed on the surface of the short cylinder. The annular groove is used to place a retaining ring. After the short cylinder is inserted into the inner hole of the fixed support, the rotating shaft is axially positioned by the retaining ring. A square hole is processed inside the short cylinder. The size of the square hole matches the end of the torsion bar. A threaded hole is processed on one side of the connection between the long cylinder and the short cylinder for fixing the pointer. When the rotating shaft rotates, the pointer rotates accordingly. The long cylinder is a rod-shaped structure, which is convenient for inserting a socket wrench to apply torsional force.
[0015] The guard is a steel plate with an Ω semi-circular arc structure, and each leg is machined with a through hole to facilitate the installation and fixation of the guard bolts when the torsion bar is installed.
[0016] The usage process of the utility model is as follows: fix the base on the workbench → fix the fixed support, L-shaped steel plate and shield to the front end of the base → adjust the installation position of the movable support according to the length of the torsion bar and fix it with bolts → install the shield → fix the pointer on the rotating shaft → insert the rotating shaft into the fixed support and fix it axially with a snap ring → preliminarily fix the dial → insert the torsion bar → adjust the dial installation position and the upper and lower adjustment screw limit positions in turn according to the torsion direction (clockwise, counterclockwise) and torsion angle of the torsion bar → insert the socket wrench into the rotating shaft for pre-torsion test.
Claims
1. A slender square torsion bar pre-twisting tool, comprising a base, a movable bracket, a rotating shaft, a fixed bracket, a pointer, and a dial. The fixed bracket is fixed to the upper end surface of the base, the movable bracket is mounted in a slide groove on the upper end surface of the base, the right-angled rotating shaft is mounted on the fixed bracket, one end of the torsion bar is fixed in the groove of the movable bracket, and the other end is inserted into the rotating shaft. A socket wrench is inserted into the rotating shaft, and the pointer is fixed to the rotating shaft with a screw; a dial is provided on the upper part of the pointer, and the dial is fixed to the fixed bracket.
2. The pre-twisting tool for a slender square torsion bar according to claim 1, characterized in that: The base is an I-shaped structure, welded from steel plates, with four U-shaped grooves on the bottom for fixing to the workbench, and a dovetail groove on the upper end for fixing the T-shaped bolt connection between the support and the base.
3. The pre-twisting tool for a slender square torsion bar according to claim 1, characterized in that: The rotating shaft is assembled in the inner hole of the fixed bracket through an elastic clamping ring and a square structure thereof.
4. The pre-twisting tool for a slender square torsion bar according to claim 1, characterized in that: The safety shield is a steel plate with an Ω semi-circular arc structure, and each leg is machined with a through hole.