Fatigue test tool for wire forming spring

Abstract

The utility model belongs to the technical field of testing tools, and particularly relates to a fatigue testing tool for a wire forming spring. Comprising a tool plate, pressing plates are locked at the two ends of the tool plate in a threaded mode, and the two ends of a to-be-tested wire forming spring are pressed and fixed through the pressing plates; one end of the push-pull rod is connected with an external driving mechanism and is used for driving the push-pull rod to move back and forth, and the other end of the push-pull rod is assembled and locked with a pull hook and is used for hooking and pulling the middle part of the wire forming spring to be detected. According to the utility model, the pull hook is driven to carry out repeated pulling test on the middle point of the to-be-tested wire forming spring, so that the fatigue test on the wire forming spring is realized, and the advantages of time and labor saving and high test efficiency are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of testing tooling technology, and specifically relates to a fatigue testing tooling for wire-formed springs. Background Technology

[0002] Currently, fatigue testing of wire-formed springs mostly involves manual repeated pulling, which is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] The purpose of this utility model is to provide a fatigue testing fixture for wire-formed springs. First, the wire-formed spring is clamped and locked. Then, an external drive mechanism drives a push-pull rod to reciprocate and pull the wire-formed spring to achieve fatigue testing of the wire-formed spring, which has the advantages of saving time and effort and high testing efficiency.

[0004] To solve the above-mentioned technical problems, this utility model provides a fatigue testing fixture for wire-formed springs, comprising:

[0005] The tooling plate has pressure plates threaded onto both ends, which press and fix the two ends of the wire forming spring to be tested.

[0006] A push-pull rod, one end of which is connected to an external drive mechanism to drive the push-pull rod to move back and forth, and the other end of which is fitted with a hook for hooking and pulling the middle part of the forming spring to be tested.

[0007] Preferably, the tooling plate further includes pressure grooves at both ends for pressing into the pressure plate; a locking screw hole is provided at the bottom of the pressure groove, and the pressure plate further includes insertion holes, through which a locking bolt is inserted into the insertion holes and the locking screw hole to lock the pressure plate.

[0008] Preferably, the pressure groove further includes a notch for inserting both ends of the wire forming spring to be tested into the pressure groove.

[0009] Preferably, the tooling plate also includes a clearance groove to provide clearance space for the test wire forming spring and the hook when they move.

[0010] Preferably, the end of the push-pull rod near the hook side further includes a slot, and the insertion part of the hook further includes a locking screw hole 2. The hook is locked by inserting the locking bolt 2 into the locking screw hole 2.

[0011] Preferably, it also includes a connecting plate, which is detachably locked to one end of the push-pull rod for detachably locking connection with an external drive mechanism.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] This invention first clamps and locks the wire-formed spring, then simulates the spring's movement trajectory in the assembly. An external drive mechanism drives a push-pull rod to reciprocate and pull the wire-formed spring, thereby achieving fatigue testing of the wire-formed spring and achieving the advantages of saving time and effort and high testing efficiency. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of a wire-formed spring fatigue testing fixture according to this utility model.

[0015] Figure 2 This is a rear view of the structure of a wire-formed spring fatigue testing fixture according to this utility model.

[0016] Figure 3 This is a structural diagram of the tooling plate of this utility model.

[0017] Figure 4 This is a structural diagram of the pull hook of this utility model.

[0018] Figure 5 This is a structural diagram of the push-pull rod of this utility model.

[0019] In the diagram: 1-Tooling plate, 11-Allowing groove, 2-Pressure plate, 21-Pressure groove, 22-Locking screw hole one, 23-Locking bolt one, 24-Notch groove, 3-Push-pull rod, 4-Hook, 41-Slot, 42-Locking screw hole two, 43-Locking bolt two, 5-Connecting plate, 6-Test line forming spring. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0021] like Figures 1-5 As shown, this utility model embodiment provides a fatigue testing fixture for wire-formed springs, comprising:

[0022] Tooling plate 1, with pressure plates 2 threadedly locked at both ends of tooling plate 1, and the pressure plates 2 press and fix the two ends of the test line forming spring 6.

[0023] The push-pull rod 3 has one end connected to an external drive mechanism to drive it to move back and forth. The other end of the push-pull rod 3 is fitted with a hook 4, which is used to hook and pull the middle part of the wire forming spring 6 to be tested, thereby pulling the wire forming spring 6 to be tested to perform fatigue testing work in multiple reciprocating cycles.

[0024] The tooling plate 1 also includes pressure grooves 21 at both ends for pressing into the pressure plate 2; the bottom of the pressure groove 21 is provided with a locking screw hole 22, and the pressure plate 2 also includes an insertion hole. The pressure plate 2 is locked by inserting a locking bolt 23 into the insertion hole and the locking screw hole 22, thereby enhancing the clamping and positioning effect of the wire forming spring 6 to be tested during fatigue testing.

[0025] The pressure groove 21 also includes a notch 24 for inserting both ends of the wire forming spring 6 to be tested into the pressure groove 21.

[0026] The tooling plate 1 also includes a clearance groove 11, which provides clearance space for the wire forming spring 6 and the hook 4 to be tested when they move.

[0027] The end of the push-pull rod 3 near the hook 4 also includes a slot 41, and the insertion part of the hook 4 also includes a locking screw hole 42. The hook 4 is locked by inserting the locking bolt 43 into the locking screw hole 42, which provides convenience for subsequent maintenance and replacement after the hook 4 has been worn for a long time.

[0028] It also includes a connecting plate 5, which is detachably locked to one end of the push-pull rod 3 for detachable locking connection with an external drive mechanism.

[0029] This utility model also includes the following usage process: When conducting fatigue testing, firstly, the tooling plate 1 is assembled and locked onto the worktable of the external testing machine. Then, the two ends of the wire forming spring 6 to be tested are quickly clamped and positioned by the pressure plate 2 and the pressure groove 21. Subsequently, the linear reciprocating drive mechanism on the external testing machine is controlled to drive the push-pull rod 3 to move back and forth, so as to drive the pull hook 4 to repeatedly pull the middle point of the wire forming spring 6 to be tested, thereby realizing the fatigue test of the wire forming spring and achieving the advantages of saving time and effort and high testing efficiency.

[0030] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A fatigue testing fixture for wire-formed springs, characterized in that, include: Tooling plate (1), with pressure plates (2) threadedly locked at both ends of the tooling plate (1), and the two ends of the wire forming spring (6) to be tested are pressed and fixed by the pressure plates (2); Push-pull rod (3), one end of which is connected to an external drive mechanism to drive the push-pull rod (3) to move back and forth, and the other end of which is fitted with a hook (4) for hooking and pulling the middle part of the forming spring (6) to be tested.

2. The fatigue testing fixture for a wire-formed spring as described in claim 1, characterized in that, The tooling plate (1) also includes pressure grooves (21) at both ends for pressing into the pressure plate (2); the bottom of the pressure groove (21) is provided with a locking screw hole (22), and the pressure plate (2) also includes an insertion hole. The locking bolt (23) is inserted into the insertion hole and the locking screw hole (22) to lock the pressure plate (2).

3. The fatigue testing fixture for a wire-formed spring as described in claim 2, characterized in that, The pressure groove (21) also includes a notch (24) for inserting both ends of the test wire forming spring (6) into the pressure groove (21).

4. The fatigue testing fixture for a wire-formed spring as described in claim 1, characterized in that, The tooling plate (1) also includes a clearance groove (11) for providing clearance space for the test wire forming spring (6) and the hook (4) when they move.

5. The fatigue testing fixture for a wire-formed spring as described in claim 1, characterized in that, The end of the push-pull rod (3) near the hook (4) also includes a slot (41), and the insertion part of the hook (4) also includes a locking screw hole (42). The hook (4) is locked by inserting the locking screw hole (42) into the locking bolt (43).

6. A fatigue testing fixture for wire-formed springs as described in any one of claims 1 to 5, characterized in that, It also includes a connecting plate (5), which is detachably locked to one end of the push-pull rod (3) for detachably locking to an external drive mechanism.

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