Combined large-specification spring loading aging clamp
By using a modular fixture design, the problems of difficult operation and low safety of large-size compression springs in the loading and aging process are solved, achieving a simple, safe and efficient clamping effect.
Patent Information
- Application Number
- CN202422595142.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the loading and aging process, existing large-size compression springs often suffer from difficult operation, low safety, ineffective fixation, and insufficient clamping force due to the use of common clamping devices.
The design employs a modular clamping system, comprising an outer pressure sleeve, an inner pressure sleeve, and a fixing rod. The inner pressure sleeve and the outer pressure sleeve are clearance-fitted. The inner diameter of the inner pressure sleeve is the same as the outer diameter of the spring, while the inner diameter of the outer pressure sleeve is slightly larger. The fixing rod is connected via a groove to ensure that the spring is fixed in the center.
It enables simple operation and highly safe clamping of large-size springs, avoids spring bending and deformation, ensures clamping stability and safety, and the overall weight of the clamp is lightweight and the manufacturing cost is low.
Smart Images
Figure CN223544007U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of large-size spring processing and manufacturing technology, specifically to a combined large-size spring loading and aging fixture. Background Technology
[0002] The general production process for compression springs is as follows: turning and winding → heat treatment for strengthening → end face grinding → fitter straightening → tempering for stress relief → load aging → fitter finishing → inspection → surface treatment → inspection. During the load aging process, the spring needs to be compressed to a certain height and held at a certain temperature for a period of time. This operation requires the use of a load aging fixture. A common load aging fixture involves threading the spring onto a mandrel, compressing it to a certain height, and securing it with screws and nuts. Large-diameter springs, with wire diameters mostly above φ10mm and compression forces exceeding 2000N, generally require single-piece compression load aging. This method cannot be used because the aging shaft for large-diameter springs is too large, the clamping force is too high, operation is difficult, the screw and nut fixing strength is insufficient, and safety is low. Utility Model Content
[0003] The purpose of this utility model is to provide a combined, simple to operate, and highly safe large-size compression spring loading and aging fixture.
[0004] Technical solution:
[0005] A combined large-size spring loading aging fixture includes an outer pressure sleeve 1, an inner pressure sleeve 3, and a fixing rod 4. The inner pressure sleeve 3 is disposed inside the outer pressure sleeve 1 and is clearance-fitted with the outer pressure sleeve. The spring to be clamped 2 is installed in the inner pressure sleeve 3. One end of the fixing rod 4 is connected to the outer pressure sleeve 1, and the other end is connected to the inner pressure sleeve 3, thereby fixing the spring to be clamped 2 in the inner pressure sleeve 3.
[0006] Furthermore, the inner diameter of the inner pressure sleeve 3 is the same as the outer diameter of the spring 2 to be clamped, and the inner cylinder lengths of the inner pressure sleeve 3 and the outer pressure sleeve 1 are less than the clamping height of the spring 2 to be clamped during loading and aging.
[0007] Furthermore, the inner pressure sleeve 3 includes an inner cylinder, and a convex ring is provided on the lower outer circle of the inner cylinder, with a plurality of open grooves evenly distributed on the convex ring.
[0008] Furthermore, a weight-reducing circular hole is provided at the bottom of the inner cylinder.
[0009] Furthermore, the outer pressure cylinder 1 includes an outer cylinder body, and an inner cylinder body is disposed inside the outer cylinder body and is clearance-fitted with the outer cylinder body. A convex ring is provided on the upper outer circle of the outer cylinder body, and a plurality of open grooves are evenly distributed on the convex ring. The number of open grooves on the upper outer circle convex platform of the outer cylinder body is the same as the number of open grooves on the lower outer circle convex platform of the inner cylinder body, and their positions correspond one-to-one. The two ends of the fixing rod 4 are respectively disposed in the two corresponding open grooves to connect the outer pressure cylinder 1 and the inner pressure cylinder 3.
[0010] Furthermore, a spring fixing boss is provided on the upper inner circle of the outer cylinder to press the support ring of the spring 2 to be clamped.
[0011] Furthermore, a weight-reducing circular hole is provided at the top of the outer cylinder.
[0012] Furthermore, the fixing rod 4 has a structure with a small diameter in the middle section and a large diameter at both ends. The diameter of the middle section of the fixing rod 4 is smaller than the opening width of the groove on the outer circle of the inner cylinder and the outer cylinder, ensuring that the fixing rod 4 can be inserted into the groove through the opening. The diameter at both ends of the fixing rod 4 is larger than the diameter of the groove on the outer circle of the inner cylinder 3 and the outer cylinder 1, ensuring that after the spring is installed, the upper and lower cylinders will not separate under the action of the spring force.
[0013] Beneficial effects:
[0014] This utility model proposes a combined large-size compression spring loading and aging clamping fixture, which consists of an outer pressure sleeve, an inner pressure sleeve, and a fixing rod, and has the advantages of simple operation and high safety.
[0015] The clamp adopts an internal and external pressure clamping method, and the clamp has a guiding function. The spring will not bend or deform during the compression process.
[0016] The inner and outer pressure sleeves have eight evenly distributed circular opening grooves on their outer sides. When fixing, simply insert the fixing rod into the groove and unload the pressure. The grooves prevent the fixing rod from slipping out, ensuring high safety.
[0017] The inner diameter of the inner pressure sleeve is the maximum outer diameter of the spring, which can effectively prevent the outer diameter of the spring from expanding outward during clamping.
[0018] There is a boss in the middle of the outer pressure sleeve that is smaller than the inner diameter of the spring. When clamping, the spring support ring can be fixed at the boss position to ensure that the spring is in the center position and prevent it from moving back and forth.
[0019] This clamp is secured with four or more fixing rods, ensuring high strength and safety.
[0020] The inner and outer pressure sleeves of the fixture are approximately the compression height of the spring under load. The fixture is lightweight, easy to handle, and has low manufacturing costs.
[0021] In summary, the loading aging fixture of this utility model has the advantages of being lightweight, well-manufactured, easy to operate, and highly safe, and can meet the requirements of loading aging for large-size springs. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of a combined large-size compression spring loading and aging clamping fixture according to an embodiment of the present invention.
[0024] Figure 2 Schematic diagram of the outer pressure sleeve structure in the loading aging fixture;
[0025] Figure 3 Top view of the outer pressure sleeve structure in the loading and aging fixture;
[0026] Figure 4 A schematic diagram of the inner pressure sleeve structure in the loading aging fixture;
[0027] Figure 5 Top view of the inner pressure sleeve structure in the loading and aging fixture;
[0028] Figure 6 A schematic diagram of the fixing rod structure in the loading aging fixture;
[0029] Among them, 1. outer pressure sleeve, 2. spring to be clamped, 3. inner pressure sleeve, and 4. fixing rod. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0031] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.
[0032] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] Figure 1 This is a schematic diagram of a combined large-size compression spring loading and aging clamping fixture according to an embodiment of the present invention.
[0034] The components include an outer pressure sleeve 1, a spring to be clamped 2, an inner pressure sleeve 3, and a fixing rod 4.
[0035] In this embodiment of the invention, the inner diameter of the inner pressure sleeve is the upper limit of the outer diameter of the spring. The length of the inner cylinder of the inner and outer pressure sleeves is less than the spring loading aging clamping height. Eight circular opening grooves are evenly distributed on the outer side. The bottom includes a supporting ring with a weight-reducing circular hole in the middle. The inner diameter of the outer pressure sleeve and the outer diameter of the inner pressure sleeve are in clearance fit. The outer pressure sleeve contains a spring fixing boss. The fixed length of the fixing rod in the middle is the sum of the loading aging clamping height and the thickness of the upper and lower base plates of the inner and outer sleeves.
[0036] When in use, install the spring into the inner pressure sleeve, then install the outer pressure sleeve into the upper end of the spring. Use a pressure device to press the spring to a state lower than the clamping height during loading and aging. Place the fixing rod into the groove on the side of the inner and outer pressure sleeves, and unload the pressure to fix the end of the fixing rod in the circular opening groove of the inner and outer pressure sleeves.
[0037] The above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.
Claims
1. A combined large-size spring loading aging fixture, characterized in that, It includes an outer pressure sleeve, an inner pressure sleeve, and a fixing rod. The inner pressure sleeve is located inside the outer pressure sleeve and is clearance-fitted with the outer pressure sleeve. The spring to be clamped is installed in the inner pressure sleeve. One end of the fixing rod is connected to the outer pressure sleeve, and the other end is connected to the inner pressure sleeve, thus fixing the spring to be clamped in the inner pressure sleeve.
2. The combined large-size spring loading aging fixture according to claim 1, characterized in that, The inner diameter of the inner pressure sleeve is the same as the outer diameter of the spring to be clamped, and the length of the inner cylinder of the inner and outer pressure sleeves is less than the clamping height of the spring to be clamped during loading and aging.
3. The combined large-size spring loading aging fixture according to claim 1, characterized in that, The inner pressure sleeve includes an inner cylinder, and a convex ring is provided on the lower outer circle of the inner cylinder, with a plurality of open grooves evenly distributed on the convex ring.
4. The combined large-size spring loading aging fixture according to claim 3, characterized in that, The bottom of the inner cylinder is provided with a weight-reducing circular hole.
5. The combined large-size spring loading aging fixture according to claim 3, characterized in that, The outer pressure sleeve includes an outer cylinder body, and an inner cylinder body is disposed inside the outer cylinder body and is clearance-fitted with the outer cylinder body. A convex ring is provided on the upper outer circle of the outer cylinder body, and several open grooves are evenly distributed on the convex ring. The number of open grooves on the upper outer circle convex platform of the outer cylinder body is the same as the number of open grooves on the lower outer circle convex platform of the inner cylinder body, and their positions correspond one-to-one. The two ends of the fixing rod are respectively disposed in the two corresponding open grooves to connect the outer pressure sleeve and the inner pressure sleeve.
6. The combined large-size spring loading aging fixture according to claim 5, characterized in that, The upper inner circle of the outer cylinder is provided with a spring fixing boss, which is used to press the support ring of the spring to be clamped.
7. The combined large-size spring loading aging fixture according to claim 6, characterized in that, The outer cylinder is provided with a weight-reducing circular hole at the top.
8. The combined large-size spring loading aging fixture according to claim 5, characterized in that, The fixing rod has a small diameter in the middle section and a large diameter at both ends. The diameter of the middle section of the fixing rod is smaller than the opening width of the groove on the outer circle of the inner and outer cylinders, ensuring that the fixing rod can be inserted into the groove through the opening. The diameters at both ends of the fixing rod are larger than the diameters of the groove on the outer circle of the inner and outer cylinders, ensuring that the upper and lower cylinders will not separate under the action of spring force after the spring is installed.