A torsion spring life test device

Abstract

The present invention discloses a torsion spring life test device, comprising a base, a fixed shaft is fixedly arranged on the base, a torsion spring to be tested is sleeved on the fixed shaft, a fixing assembly is arranged on one side of the base to fix a torsion arm of the torsion spring to be tested, and another torsion arm of the torsion spring to be tested is fixedly arranged on a first positioning block; a rotating assembly is arranged on the base, the rotating assembly comprises a driving source and a turntable, the driving source drives the turntable to rotate, the first positioning block is fixedly arranged on the turntable and rotates with the turntable, a through hole is penetrated at the center of the turntable, and the fixed shaft is penetrated in the through hole. The device can realize 360° torsion test of torsion springs and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of torsion spring testing, and in particular to a torsion spring life testing device. Background Art

[0002] Torsion springs, also called special-shaped springs, are widely used in many fields such as automobiles, chemicals, and molds. They are mainly set on rotating shafts or pins to reset the rotating shafts or pins. The performance of torsion springs will directly affect the service life and quality of the products they are used in. Therefore, before the torsion springs are put into use, they must be tested for life. The service life of a torsion spring is generally expressed as the number of cycles used, that is, after a specified number of repeated actions, no surface cracks or breaks will occur.

[0003] The torsion spring life test devices commonly available on the market currently have certain limitations on the rotation angle and the size of the torsion spring, and cannot meet higher testing requirements. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a torsion spring life test device, which can realize 360° torsion test of the torsion spring and has a wide range of applications.

[0005] In order to solve the above technical problems, the present invention provides a torsion spring life testing device, including a base, a fixed shaft is fixedly arranged on the base, a torsion spring to be tested is sleeved on the fixed shaft, a fixing component is arranged on one side of the base to fix a torsion arm of the torsion spring to be tested, and the other torsion arm of the torsion spring to be tested is fixedly arranged on a first positioning block; a rotating component is arranged on the base, the rotating component includes a driving source and a turntable, the driving source drives the turntable to rotate, the first positioning block is fixedly arranged on the turntable and rotates with the turntable, a through hole is opened at the center of the turntable, and the fixed shaft is penetrated in the through hole.

[0006] Preferably, a guide groove is provided on the turntable, and the guide groove is arranged along the radial direction of the turntable. A clamping block is provided on the first positioning block, and the clamping block is clamped in the guide groove. The first positioning block is provided with a first positioning pin for fixing the torsion arm of the torsion spring.

[0007] Preferably, there are two guide grooves which are arranged in parallel, and there are two clamping blocks.

[0008] Preferably, a slot hole for fixing a torsion arm of a torsion spring is provided on the fixed shaft.

[0009] Preferably, the fixing assembly comprises a three-axis bracket and a second positioning block, and the second positioning block is arranged on the three-axis bracket.

[0010] Preferably, the second positioning block is provided with a second positioning pin for fixing the torsion arm of the torsion spring.

[0011] Preferably, a guide groove is provided on the three-axis bracket, a slider is provided on the second positioning block, the slider is located in the guide groove and can move along the guide groove, a trigger is provided on the slider, and the trigger is threadedly connected to the slider to fix the trigger on the three-axis bracket.

[0012] Preferably, the driving source is a hollow shaft motor.

[0013] Beneficial effects of the present invention:

[0014] 1. The present invention sleeves a torsion spring on a fixed shaft, wherein one torsion arm of the torsion spring is fixed on a turntable, and the other torsion arm of the torsion spring is fixed, and the life test of the torsion spring can be achieved by rotating the turntable.

[0015] 2. The torsion angle of the torsion spring of the present invention is adjustable, and the maximum torsion angle is 360°.

[0016] 3. The present invention has high testing accuracy, good effect, high efficiency, and can be used to test torsion springs of different sizes, with a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 A local enlarged view of area A;

[0019] Figure 3 is a structural schematic diagram of a first positioning block;

[0020] Figure 4 is a structural schematic diagram of a second positioning block;

[0021] Figure 5 It is a schematic diagram of the structure of a torsion spring with one torsion arm being a straight torsion arm.

[0022] Explanation of the numbers in the figure: 10, base; 20, driving source; 21, turntable; 211, guide groove; 22, first positioning block; 221, clamping block; 222, first positioning pin; 30, fixed shaft; 40, fixed assembly; 41, guide groove; 42, second positioning block; 421, second positioning pin; 422, slider; 423, trigger; 50, straight torque arm. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0024] Reference Figure 1-Figure 4 As shown, the present invention discloses a torsion spring life test device, including a base 10, a fixed shaft 30 is fixedly arranged on the base 10, a torsion spring to be tested is sleeved on the fixed shaft 30, a fixing assembly is arranged on one side of the base 10 to fix one torsion arm of the torsion spring to be tested, and the other torsion arm of the torsion spring to be tested is fixedly arranged on a first positioning block 22. A rotating assembly is arranged on the base 10, and the rotating assembly includes a driving source 20 and a turntable 21, the driving source 20 drives the turntable 21 to rotate, the first positioning block 22 is fixedly arranged on the turntable 21 and rotates with the turntable 21, a through hole is opened at the center of the turntable 21, and the fixed shaft 30 is arranged in the through hole.

[0025] In this way, one torsion arm of the torsion spring is fixed, and the other torsion arm is twisted to a set angle under the action of the rotating disk 21, and then reset, and this process is repeated to achieve a torsion test on the torsion spring.

[0026] A guide groove 211 is provided on the turntable 21, and the guide groove 211 is arranged along the radial direction of the turntable 21. A clamping block 221 is provided on the first positioning block 22, and the clamping block 221 is clamped in the guide groove 211. The first positioning block 22 is provided with a first positioning pin 222 for fixing the torsion arm of the torsion spring. In this way, the first positioning block 22 can be moved in the guide groove 211 according to the length of the torsion arm of the torsion spring to be tested. The first positioning block 22 can adapt to torsion arms of different lengths. There are two guide grooves 211 and two clamping blocks 221. In this way, the stability of the first positioning block 22 is better.

[0027] A plurality of guide grooves 211 can be arranged around the axis of the rotating disk 21. In this way, it is convenient to select different positions of the rotating disk 21 to fix the torsion arm of the torsion spring.

[0028] The fixed shaft and the base are detachably connected to facilitate adapting to torsion springs of different sizes.

[0029] During the rotation of the rotating disk 21 , since the first positioning block 22 is only subjected to tangential force, it can be well fixed on the rotating disk 21 .

[0030] The fixing assembly 40 includes a three-axis bracket and a second positioning block 42, and the second positioning block 42 is arranged on the three-axis bracket. The three-axis bracket is an existing technology, which can realize the movement and fixing of the second positioning block 42 in the three-axis space.

[0031] The second positioning block 42 is provided with a second positioning pin 421 for fixing the torsion arm of the torsion spring. The torsion arm of the torsion spring has a hook portion, and the torsion arm can be fixed by simply hooking the hook portion on the second positioning pin 421.

[0032] A guide groove 41 is provided on the three-axis bracket, a slider 422 is provided on the second positioning block 42, the slider 422 is located in the guide groove 41 and can move along the guide groove 41, a trigger 423 is provided on the slider 422, and the trigger 423 is threadedly connected with the slider 422 to fix the trigger 423 on the three-axis bracket. The slider 422 is inserted into the guide groove 41, and a trigger 423 is provided at one end of the slider 422 away from the second positioning block 42, and the trigger 423 rotates around the slider 422 and locks the second positioning block 42 at the target position.

[0033] The driving source 20 is a hollow shaft motor. The hollow shaft motor is a prior art and will not be described in detail here. The hollow shaft motor includes a hollow rotating shaft, which drives the turntable 21 to rotate. The fixed shaft 30 is arranged at the hollow part of the rotating shaft, and a rotating bearing can be arranged between the fixed shaft 30 and the rotating shaft.

[0034] In another embodiment, a slot for fixing the torsion arm of the torsion spring is provided on the fixed shaft 30. Figure 5 The straight torsion arm 50 of the torsion spring shown can be clamped in the slot of the fixed shaft 30, and the other torsion arm of the torsion spring is fixed on the first positioning block 22. In this way, when the rotating disk 21 rotates, the torsion spring life test can be achieved.

[0035] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A torsion spring life test device, characterized in that: It comprises a base, a fixed shaft is fixedly arranged on the base, a torsion spring to be tested is sleeved on the fixed shaft, a fixed assembly is arranged on one side of the base to fix a torsion arm of the torsion spring to be tested, and the other torsion arm of the torsion spring to be tested is fixedly arranged on a first positioning block; a rotating assembly is arranged on the base, the rotating assembly comprises a driving source and a turntable, the driving source drives the turntable to rotate, the first positioning block is fixedly arranged on the turntable and rotates with the turntable, a through hole is penetrated at the center of the turntable, and the fixed shaft is penetrated in the through hole; The fixing assembly comprises a three-axis bracket and a second positioning block, wherein the second positioning block is arranged on the three-axis bracket; The three-axis bracket is provided with a guide groove, the second positioning block is provided with a slider, the slider is located in the guide groove and can move along the guide groove, the slider is provided with a trigger, and the trigger is threadedly connected to the slider to fix the trigger on the three-axis bracket.

2. The torsion spring life test device according to claim 1, characterized in that: The turntable is provided with a guide groove, which is arranged along the radial direction of the turntable. The first positioning block is provided with a clamping block, which is clamped in the guide groove. The first positioning block is provided with a first positioning pin for fixing the torsion arm of the torsion spring.

3. The torsion spring life test device according to claim 2, characterized in that: The number of the guide grooves is two, and the number of the clamping blocks is two.

4. The torsion spring life test device according to claim 1, characterized in that: The fixed shaft is provided with a slot hole for fixing the torsion arm of the torsion spring.

5. The torsion spring life test device according to claim 1, characterized in that: The second positioning block is provided with a second positioning pin for fixing the torsion arm of the torsion spring.

6. The torsion spring life test device according to claim 1, characterized in that: The driving source is a hollow shaft motor.

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