Device for preventing heat treatment deformation of spring
By designing a device including an anti-deformation baffle, an L-shaped clamp and a hook, the problem of difficulty in clamping and large deformation during the heat treatment of large-sized springs is solved, and more efficient heat treatment and dimensional stability are achieved.
Patent Information
- Application Number
- CN202421088394.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-17
AI Technical Summary
Large-sized springs have problems such as clamping difficulties and large deformation during heat treatment, resulting in over-size size.
A device including an anti-deformation baffle, an L-shaped clamp and a hook is designed. Through the combination of the hook and the L-shaped clamp, stable fixation and limiting of large-sized springs are achieved to avoid deformation during heat treatment.
It effectively solves the problem of clamping difficulties and deformation during heat treatment of large-sized springs, improves the dimensional stability after heat treatment, and reduces manufacturing cost and operation complexity.
Smart Images
Figure CN222434566U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heat treatment of large-size springs in the field of aviation manufacturing, and particularly relates to a device for preventing springs from being deformed during heat treatment. Background Art
[0002] The weapon bay emergency spring assembly is usually used as an emergency handling system for the aircraft in a full-load mission state. Once the hydraulic system fails, the system plays a key role in the overall safety of the aircraft, and the emergency spring is an important part of the system. Since the emergency spring is in a critical position, its performance requirements are strict, and its strength and manufacturing precision requirements are high. Its steel wire diameter is φ12mm, the total length of the spring is 880mm, and the diameter of the spring after winding can reach φ70mm.
[0003] Due to the large size of the spring and the weight of about 9.851kg, it is difficult to clamp it during the heat treatment of the spring. If the placement method is not selected properly during the quenching treatment, its large dead weight and stress release during the heat treatment may cause problems with the straightness of the spring. In order to facilitate the clamping of the spring during the heat treatment process and to prevent the problem of excessive deformation during the heat treatment of the spring resulting in excessive spring size tolerance, a special study was conducted to propose a clamping device for preventing deformation of large-size springs during heat treatment. Utility Model Content
[0004] Purpose of the utility model: The purpose of the utility model is to solve the problems of difficult clamping and large deformation after heat treatment of large-size springs, based on a new process equipment and an easy-to-operate clamping method, to effectively reduce the deformation of the spring after heat treatment.
[0005] The technical solution of the utility model
[0006] A device for preventing spring deformation during heat treatment comprises an anti-deformation baffle 1, two L-shaped clamps 3, and two hooks 4. The top ends of the two hooks 4 are connected by the deformation baffle 1, and the bottom ends of the two hooks 4 are connected. The two L-shaped clamps 3 are slidably arranged on two corresponding hooks 4.
[0007] Furthermore, an external thread is arranged on the outer cylindrical surface of the hook 4.
[0008] Furthermore, the L-shaped fixture 3 is provided with an internal thread, which cooperates with the external thread on the outer cylindrical surface of the hook 4 to compress the top end of the spring coil.
[0009] Furthermore, it also includes four nuts 2 arranged on two hooks 4, of which two nuts 2 are arranged at the bottom end of the anti-deformation baffle 1 to limit the anti-deformation baffle 1; the other two nuts 2 are respectively arranged at the upper ends of the two L-shaped clamps 3 to limit the two L-shaped clamps 3.
[0010] Furthermore, the anti-deformation baffle 1 is slidably arranged on the top ends of the two hooks 4 .
[0011] Furthermore, the bottom ends of the two hooks 4 are welded together through a connecting strip, which serves to limit the bottom of the spring.
[0012] Furthermore, the L-shaped clamp 3 includes a compression sleeve that can slide on the hook 4, and a clamping column arranged on the outer cylindrical surface of the compression sleeve. When in use, the compression sleeve compresses the outermost spring coil end face of the spring 5 from the upper end, and the clamping column is inserted into the spring coil and tightly adheres to the inner surface of the spring coil to limit the left and right swing of the spring.
[0013] Beneficial Effects
[0014] The device for preventing spring deformation during heat treatment proposed by the utility model solves the problems of difficult clamping during heat treatment of large-size springs and large deformation after heat treatment. It has low manufacturing cost, convenient clamping, good anti-deformation effect, high installation efficiency, and simple and easy operation method for clamping the spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of a device for preventing spring deformation during heat treatment;
[0016] Figure 2 It is a working schematic diagram of a large-size spring clamped on a device to prevent the spring from being deformed during heat treatment;
[0017] Among them: 1-anti-deformation baffle, 2-nut, 3-L-type clamp, 4-hook, 5-spring. DETAILED DESCRIPTION
[0018] The utility model is further introduced below in conjunction with the accompanying drawings;
[0019] like Figure 1-2 As shown, the utility model proposes a device for preventing springs from being deformed during heat treatment, comprising an anti-deformation baffle 1, two L-shaped fixtures 3, and two hooks 4. The top ends of the two hooks 4 are connected through the deformation baffle 1, and the bottom ends of the two hooks 4 are connected. The two L-shaped fixtures 3 are slidably arranged on two corresponding hooks 4. Among them, the outer cylindrical surface of the hook 4 is provided with an external thread; the L-shaped fixture 3 is provided with an internal thread, which cooperates with the external thread on the outer cylindrical surface of the hook 4 to press the top of the spring coil; and also includes 4 nuts 2 arranged on the two hooks 4, wherein 2 nuts 2 are arranged at the bottom end of the anti-deformation baffle 1, and are used to limit the anti-deformation baffle 1; the other 2 nuts 2 are respectively arranged at the upper ends of the two L-shaped fixtures 3, and are used to limit the two L-shaped fixtures 3.
[0020] The anti-deformation baffle 1 is slidably arranged on the top of the two hooks 4; the bottom ends of the two hooks 4 are welded together by a connecting strip, which plays a limiting role on the bottom of the spring; the L-shaped clamp 3 includes a clamping sleeve that can slide on the hook 4, and a clamping column arranged on the outer cylindrical surface of the clamping sleeve. When in use, the clamping sleeve presses the outermost spring coil end face of the spring 5 from the upper end, and the clamping column is inserted into the spring coil and tightly adheres to the inner surface of the spring coil to limit the left and right swing of the spring.
[0021] The utility model uses a pair of hooks 4 in conjunction with two L-shaped fixtures to fix a large-size spring. The spring is clamped and fixed from the upper and lower ends by the elbows of the two L-shaped fixtures 3 and the two hooks 4, respectively, to limit the deformation of the spring along the axial direction due to thermal expansion during the heat treatment process, and the long rod parts of the two hooks 4 play a limiting and restraining role on the radial deformation of the spring body.
[0022] The method of use includes the following steps:
[0023] Step 1: Place the wound spring body between the two hooks 4, and insert the elbows of the two hooks 4 symmetrically from both sides of the spring end;
[0024] Step 2: Rotate and adjust the spring body to ensure that the elbow of the hook 4 avoids the straight rod part of the spring end;
[0025] Step 3: While keeping the long rods of the two hooks 4 parallel to the spring body, insert the two L-shaped fixtures 3 at the other end of the hook 4 symmetrically from both sides of the other end of the spring. At the same time, pay attention to adjusting the direction of the L-shaped fixture 3 to avoid the straight rod part of the spring end;
[0026] Step 4: After both ends of the straight rod have avoided the end of the spring, tighten the two nuts 2 on the outside of the L-shaped fixture 3 respectively. During the tightening process, care should be taken to ensure that the force on both sides of the spring is even and the spring is in a good state.
[0027] Step 5: After the spring body is clamped, tighten the nut 2 on the upper end of the hook 4 and the anti-deformation baffle 1.
Claims
1. A device for preventing spring deformation during heat treatment, characterized in that: It includes an anti-deformation baffle, two L-shaped fixtures, and two hooks. The top ends of the two hooks are connected through the deformation baffle, and the bottom ends of the two hooks are connected. The two L-shaped fixtures are slidably arranged on two corresponding hooks.
2. The device for preventing spring deformation during heat treatment according to claim 1, characterized in that: An external thread is arranged on the outer cylindrical surface of the hook.
3. The device for preventing spring deformation during heat treatment according to claim 2, characterized in that: The L-shaped fixture is provided with an internal thread, which cooperates with the external thread on the outer cylindrical surface of the hook to compress the top end of the spring coil.
4. The device for preventing spring deformation during heat treatment according to claim 1, characterized in that: It also includes 4 nuts set on two hooks, 2 of which are set at the bottom end of the anti-deformation baffle to limit the anti-deformation baffle; the other 2 nuts are respectively set at the upper ends of the two L-shaped clamps to limit the two L-shaped clamps.
5. The device for preventing spring deformation during heat treatment according to claim 1, characterized in that: The anti-deformation baffle is slidably arranged on the top ends of the two hooks.
6. The device for preventing spring deformation during heat treatment according to claim 1, characterized in that: The bottom ends of the two hooks are welded together through a connecting strip, which serves to limit the bottom of the spring.
7. The device for preventing spring deformation during heat treatment according to claim 3, characterized in that: The L-shaped clamp includes a compression sleeve that can slide on the hook, and a clamping column arranged on the outer cylindrical surface of the compression sleeve. When in use, the compression sleeve compresses the outermost spring coil end face of the spring from the upper end, and the clamping column is inserted into the spring coil and tightly adheres to the inner surface of the spring coil to limit the left and right swing of the spring.