Special tool for spring compression aging

Abstract

The utility model discloses a special tool for compression aging of a spring, which comprises an outer hexagon bolt, the outer hexagon bolt is matched with a lower backing plate in an inserting manner, a neck bush is sleeved on the outer hexagon bolt, an outer bush is sleeved on the outer side of the neck bush, and an interlayer space for placing the spring is reserved between the neck bush and the outer bush. The utility model relates to the technical field of manufacturing of spring parts, a spring is inserted into an interlayer space between a neck bush and an outer bush, an upper base plate is buckled on an outer hexagon bolt, and a first locking nut is utilized to extrude the upper base plate, so that the spring is compressed into the interlayer space between the neck bush and the outer bush; the spring is fastened through the inner lining and the outer lining, after the spring is placed in the tool, the spring cannot deviate left and right by a large distance during compression aging, and the success rate of compression aging is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of spring component manufacturing, in particular to a special tooling for spring compression aging. Background Art

[0002] When the spring is strengthened by compression aging heat treatment, it is required to compress the spring to the working state height and keep it at a high temperature of 500℃ for 5h-24h, and it is necessary to ensure the inner and outer diameters of the spring and the shape and position tolerance of the spring. In the prior art, the traditional compression aging method is used, and the spring is prone to deformation and "bulging", and the shape and elasticity of the spring change greatly, affecting the success rate of compression aging. In view of this, in-depth research on the above problems led to the creation of this case. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a special tooling for spring compression aging, which solves the problems raised in the background technology.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a special tooling for spring compression aging, including an external hexagonal bolt, the external hexagonal bolt is plugged into and matched with a lower pad, an inner sleeve is mounted on the external hexagonal bolt, an outer sleeve is mounted on the outer side of the inner sleeve, an interlayer space for placing a spring is reserved between the inner sleeve and the outer sleeve, an upper pad is inserted on the top of the external hexagonal bolt, and a first locking nut is screwed on the upper side of the upper pad.

[0005] Grooves are symmetrically provided on both sides of the external hexagonal bolt along the length direction.

[0006] A flat washer is installed on the upper part of the first locking nut, and a second locking nut is screwed on the upper part of the flat washer.

[0007] The utility model provides a special tool for spring compression aging. It has the following beneficial effects: the special tool for spring compression aging adopts an assembled combination design, and is composed of an outer hexagonal bolt, an upper pad, a lower pad, an inner sleeve, an outer sleeve and a first locking nut. When in use, the pad, the inner sleeve and the outer sleeve are installed on the outer hexagonal bolt, the spring is inserted into the interlayer space between the inner sleeve and the outer sleeve, the upper pad is buckled onto the outer hexagonal bolt and the upper pad is squeezed by the first locking nut, so that the spring is compressed into the interlayer space between the inner sleeve and the outer sleeve, the inner and outer sleeves are used to tighten the spring, and after the spring is placed inside the tool, the spring cannot be offset by a large distance left and right during compression aging, thereby ensuring the success rate of compression aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the main structure of the special tooling for spring compression aging according to the utility model.

[0009] Figure 2 It is a schematic diagram of the main structure of the hexagonal bolt described in the utility model.

[0010] Figure 3 It is a side structural schematic diagram of the hexagonal bolt described in the utility model.

[0011] In the figure: 1. Hexagonal bolt; 2. Lower plate; 3. Inner bushing; 4. Outer bushing; 5. Upper plate; 6. First locking nut; 7. Groove; 8. Flat washer; 9. Second locking nut. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] Embodiment: In conjunction with the specification Figure 1-3 It can be seen that the present application specifically designs a special tooling for spring compression aging, including an external hexagonal bolt 1, the external hexagonal bolt 1 is plugged into a lower pad 2, an inner sleeve 3 is sleeved on the external hexagonal bolt 1, an outer sleeve 4 is sleeved on the outer side of the inner sleeve 3, and a sandwich space for placing a spring is reserved between the inner sleeve 3 and the outer sleeve 4, an upper pad 5 is inserted on the top of the external hexagonal bolt 1, and a first locking nut 6 is screwed on the upper pad 5. The special tooling for spring compression aging adopts an assembled combination design, using the external hexagonal bolt 1, the upper pad 5, the lower pad 2, the inner sleeve 3, the external The bushing 4 and the first locking nut 6 are combined. When in use, the pad, the inner bushing 3 and the outer bushing 4 are installed on the outer hexagonal bolt 1, the spring is inserted into the interlayer space between the inner bushing 3 and the outer bushing 4, the upper pad 5 is buckled onto the outer hexagonal bolt 1 and the upper pad 5 is squeezed by the first locking nut 6, so that the spring is compressed into the interlayer space between the inner bushing 3 and the outer bushing 4, and the inner and outer bushings 4 are used to tighten the spring. After the spring is placed inside the tooling, the spring cannot be offset by a large distance to the left and right during compression aging, thereby ensuring the success rate of compression aging.

[0014] In the specific implementation process, as a preferred setting, grooves 7 are symmetrically opened on both sides of the above-mentioned hexagonal bolt 1 along the length direction. Since the compression aging of spring parts requires a long-term heat treatment at 500°C, the setting of the grooves 7 can effectively avoid excessive deformation of the hexagonal bolt 1 under high heat conditions and improve the stability of tooling use.

[0015] In the specific implementation process, as a preferred setting, a flat gasket 8 is installed on the upper part of the above-mentioned first locking nut 6, and a second locking nut 9 is screwed on the top of the flat gasket 8. Different types of springs have different reset pressures. When the reset force of the processed spring is too large, the compression effect is ensured by adding a second locking nut 9.

[0016] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Special tooling for spring compression aging, characterized in that: It includes an external hexagonal bolt, which is plugged into a lower pad. An inner sleeve is mounted on the external hexagonal bolt, an outer sleeve is mounted on the outer side of the inner sleeve, and an interlayer space for placing a spring is reserved between the inner sleeve and the outer sleeve. An upper pad is inserted on the top of the external hexagonal bolt, and a first locking nut is screwed on the upper side of the upper pad.

2. The special tooling for spring compression aging according to claim 1 is characterized in that: Grooves are symmetrically formed on both sides of the external hexagonal bolt along the length direction.

3. The special tooling for spring compression aging according to claim 1 is characterized in that: A flat washer is installed on the upper part of the first locking nut, and a second locking nut is screwed on the upper part of the flat washer.

Images