CN218984657U - Clamping spring device for shaft - Google Patents

Abstract

The utility model relates to the technical field of clamp spring assembly, in particular to a clamp spring mounting device for a shaft, which comprises a guide rod, wherein the guide rod comprises a guide section and a connecting section, the diameter of the guide section gradually reduces along the axial direction, an inner hole is formed in the connecting section along the axial direction, the diameter of the inner hole is matched with the diameter of the shaft, and the end part of the connecting section is 0.1-0.3mm away from a shaft groove when the connecting section is sleeved on the shaft. The utility model can solve the problem of short service life of the existing clamping spring mounting device.

Description

Clamping spring device for shaft

Technical Field

The utility model relates to the technical field of clamp spring assembly, in particular to a clamp spring mounting device for a shaft.

Background

The snap spring for the shaft is a fastener which is arranged on the shaft groove and used for fixing the axial movement of a part, the inner diameter of the snap spring is slightly smaller than the diameter of the assembled shaft, during the installation, a clamp mouth is generally inserted into a clamp hole of the snap spring by adopting a clamp spring clamp, the inner diameter of the snap spring is enlarged, and then the snap spring is placed on the shaft groove which is machined in advance. At present, in a large-scale assembly line, in order to improve the production efficiency, a clamp spring is assembled by using clamp spring pliers, but a rapid assembly tool which can be matched with other equipment on the production line is used, for example, a steel wire outer clamp spring assembly tool is disclosed in a patent document with the publication number of CN203993781U, when the assembly tool is used, a guide cone is sleeved on a shaft, then the clamp spring is sleeved on the guide cone, and finally, the clamp spring is pushed into a shaft groove by using a pressing sleeve or a pressing head of a pressing machine; however, in the practical use process, the inventor finds that, due to the harder material of the clamp spring, the shrinkage force of the clamp spring can damage the guide cone at the moment that the clamp spring is separated from the guide cone, and particularly, when the inner hole of the guide cone is deeper and the wall thickness is thinner, the service life of the guide cone is short.

Disclosure of Invention

The utility model provides a clamping spring device for a shaft, which can solve the problem of short service life of the traditional clamping spring device.

The application provides the following technical scheme: the utility model provides a clamp spring device for axle, includes the guide bar, and the guide bar includes guide section and linkage segment, and the diameter of guide section reduces along axial direction gradually, and the linkage segment is provided with the hole along its axial direction, and hole diameter cooperatees with the diameter of axle, and its tip is 0.1-0.3mm with the axle groove when linkage segment cover is epaxial.

The beneficial effects are that: through setting the depth of the inner hole, the bottom of the connecting section is always 0.1-0.3mm away from the shaft groove when the connecting section is sleeved on the shaft, so that the design can effectively prevent the connecting section from blocking the jump ring from separating, and also prevent the end part of the connecting section from being damaged by the force generated when the inner diameter of the jump ring is reduced at the moment of separating the jump ring, thereby prolonging the service life of the jump ring fixture; in addition, the snap spring can enter the shaft groove more easily and accurately after being separated from the connecting section, and the product shaft is prevented from being scratched by the snap spring.

Further, when the connecting section is sleeved on the shaft, the distance between the end part of the connecting section and the shaft groove is 0.2mm; preferably 0.2mm.

Further, the wall thickness of the connecting section is 0.4-0.6mm; when the wall thickness is smaller than 0.4mm, the wall is easy to deform in the production process, so that the subsequent service life is reduced; when the wall thickness is larger than 0.6mm, the inner diameter of the clamp spring is easily expanded beyond the deformation range of the clamp spring when the clamp spring is sleeved on the outer wall of the connecting section, so that the clamp spring is permanently deformed.

Further, the guide rod is made of DC53 material; the DC53 material has better strength and rigidity, and the service life of the guide rod can be further prolonged by adopting the DC53 material because the inner hole of the guide rod connecting section is deeper and the wall thickness is thinner; when the material of the guide rod is harder, the guide rod is not easily scratched by the clamp spring, but cracks are easily generated in the manufacturing process, and the yield is lower.

Further, finishing the inner hole; the finish of the inner hole wall is improved through finishing processing, and the product shaft is prevented from being scratched in the using process.

Further, the guide section is provided with a vent hole; the connecting section can be prevented from producing a closed space when being sleeved on the shaft, and the air resistance is reduced.

Drawings

FIG. 1 is a cross-sectional view of a guide bar of the present utility model;

FIG. 2 is a schematic representation of the use of the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

the labels in the drawings of this specification include: the guide section 1, the connecting section 2, the inner hole 3, the vent hole 4, the shaft 5, the shaft groove 6, the clamp spring 7 and the pressure head 8.

Example 1

As shown in FIG. 1, the clamping spring device for the shaft comprises a guide rod, wherein the guide rod comprises a guide section 1 and a connecting section 2; the guide section 1 can be of a solid or hollow structure, the diameter of the guide section 1 is gradually reduced along the axial direction, the specific guide section 1 is conical, the top of the cone is a smooth sphere, and the top of the guide section 1 is also provided with a vent hole 4; the connecting section 2 is provided with an inner bore 3 in its axial direction, the diameter of the inner bore 3 being matched with the diameter of the shaft 5, ensuring that the connecting section 2 can be easily sleeved on the shaft 5 or removed from the shaft 5, the end of the connecting section 2 being spaced from the shaft groove 6 by 0.1-0.3mm, preferably 0.2mm in this embodiment, when the connecting section 2 is sleeved on the shaft 5. Specifically, the guide rod is made of DC53 material, and the inner hole 3 of the guide rod is finished to improve the smoothness of the inner wall; the wall thickness of the connecting section 2 is 0.4-0.6mm, preferably 0.5mm in this embodiment.

As shown in fig. 2, the device of the embodiment is used in combination with the press head 8 of the press when the clamp spring 7 is assembled, firstly, the shaft 5 to be assembled with the clamp spring 7 is fixed on the base of the press, then the guide rod is sleeved on the shaft 5, at the moment, the bottom of the guide rod is 0.2mm away from the shaft groove 6, then the clamp spring 7 is put in from the guide section 1, the press is started to enable the press head 8 to be aligned with the guide rod, the press head 8 is of a hollow structure, the clamp spring 7 is pushed into the shaft groove 6 when the end part of the press head 8 moves downwards, the purpose of rapidly installing the clamp spring 7 can be achieved, meanwhile, the damage of the clamp spring 7 to the guide rod can be effectively reduced through the accurate dimension of the guide rod, and the service life of the guide rod is prolonged.

The above is merely an embodiment of the present utility model, and the present utility model is not limited to the field of the present embodiment, but the specific structure and characteristics of the present utility model are not described in detail. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (6)

1. The utility model provides a clamping spring device for axle, includes the guide bar, its characterized in that, the guide bar includes guide section and linkage segment, the diameter of guide section reduces along axial direction gradually, the linkage segment is provided with the hole along its axial direction, hole diameter and the diameter of axle match, its tip and axle groove distance 0.1-0.3mm when linkage segment cover is epaxial.

2. The clamping spring device for a shaft according to claim 1, wherein: the end of the connecting section is 0.2mm away from the shaft groove when the connecting section is sleeved on the shaft.

3. The clamping spring device for a shaft according to claim 2, wherein: the wall thickness of the connecting section is 0.4-0.6mm.

4. A clamping spring device for a shaft as claimed in claim 3, wherein: the guide rod is made of DC53 material.

5. The clamping spring device for a shaft according to claim 4, wherein: and the inner hole is subjected to finishing processing.

6. The clamping spring device for a shaft according to claim 1, wherein: and the guide section is provided with a vent hole.

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