Machining method and tool for elastic check rings

A technology for retaining rings and processing methods, which is applied in the fields of tool manufacturing, wire processing, metal processing, etc., can solve the problems of difficult processing of retaining rings, etc., and achieve the effects of improving processing efficiency and processing quality, and controlling deformation

Active Publication Date: 2021-05-28
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a processing method for the circlip for the large aspect ratio 75Mn wire circlip which is difficult to process in the prior art and tools to meet the high precision and mass production requirements of the retaining ring

Method used

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  • Machining method and tool for elastic check rings
  • Machining method and tool for elastic check rings
  • Machining method and tool for elastic check rings

Examples

Experimental program
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Effect test

Embodiment 1

[0049] see figure 1 In (a) and (b), the processing method of the retaining ring of the present invention is used to process the outer retaining ring, the raw material of the outer retaining ring is 75Mn flat steel wire, the standard is WS9-S203 flat wire-96, and the state is annealed.

[0050] The illustrated outlines refer to two circlip parts of different sizes, the specific dimensions are shown in Table 1 respectively.

[0051] Table 1 Outer retaining ring retaining ring number and corresponding size

[0052]

[0053] For the above-mentioned circlip, the processing method of the present invention comprises the following steps:

[0054] 1. Winding

[0055] The CNC-620 automatic spring winding machine is used to wind the spring according to the dimensions shown in Table 1. When programming, first set the starting points of all X, Y, and Z axes as 0, and program while manually winding. After the test piece meets the requirements, start the program to start automatic wind...

Embodiment 2

[0076] see figure 2 In (a) and (b), adopt the processing method of the circlip of the present invention to process the inner retaining ring, the inner retaining ring raw material is 75Mn flat steel wire, the standard is WS9-S203 flat wire-96, and the state is annealing.

[0077] The ring numbers and specific size requirements corresponding to the inner ring shown in the figure are shown in Table 2.

[0078] Table 2 Numbers and corresponding dimensions of inner retaining rings

[0079]

[0080] For the above-mentioned circlip, the processing method of the present invention comprises the following steps:

[0081] 1. Winding

[0082] Adopt CNC-620 automatic spring winding machine, and carry out spring winding according to the dimensions shown in Table 2. Note that when programming, first set the starting points of all X, Y, and Z axes as 0, and program while manually winding, and start the program after the test piece meets the requirements. During winding, spot check the...

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Abstract

The invention discloses a machining method and a tool for elastic check rings. The machining method comprises the following steps that spring winding is conducted; the two end faces of springs are machined, the sizes of the check rings are checked, and the unsatisfied sizes are finely calibrated; the check rings are loaded into a heat treatment clamp to be quenched and tempered, and the hardness value of the material of the check rings is 82 HR15N-86 HR15N; the flatness and the end face sizes of the check rings are finely trimmed, and heat treatment deformation is corrected; burrs are polished, so that the edges of the check rings are smooth; and all the sizes of the check rings are inspected, anti-corrosion and anti-rust treatment is conducted on the surfaces of the check rings which are inspected to be qualified, and finally packaging and delivery are conducted. The invention further provides the heat treatment clamp for the elastic check rings and the size inspection tools for the elastic check rings. Aiming at precision machining of 75Mn wire elastic check rings with the large width-to-thickness ratio, the machining method meets the requirements for the size and tolerance of the check rings, deformation is controlled, and the requirement for rapid detection during mass production is met.

Description

technical field [0001] The invention belongs to the field of precision machining, and in particular relates to a processing method and tool for an elastic retaining ring. Background technique [0002] The elastic retaining ring made of 75Mn wire with a large aspect ratio is often used for the axial stop of the retaining ring. These springs have holes or notches at both ends to facilitate assembly and removal. The processing of this type of spring is difficult, which is manifested in the following aspects: [0003] 1. High precision requirements, the outer diameter tolerance is as low as +0.33, and the deformation caused by winding and heat treatment is difficult to control within the tolerance range; 2. The aspect ratio of raw materials is large, up to 4.1, and the wire feeding and winding process It is prone to torsion, and the pitch and inner diameter of the retaining ring are small, which makes forming difficult and easily deformed into a dish shape during winding; 3. B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F35/00B21F35/02B21C51/00
CPCB21F35/00B21F35/02B21C51/00
Inventor 曾凌霄刘朋飞郝文强孟涛赵洁王飞李朝辉赵瑶
Owner AECC AVIATION POWER CO LTD
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