Method for machining grooved thin-walled lock ring part

A part processing and thin-wall technology, which is applied to the processing of grooved and thin-walled lock ring parts, can solve the problems of many surface burrs, difficult processing, and part size errors, and achieves reduction of processing internal stress, high qualification rate, and reduced processing. effect of error

Active Publication Date: 2020-09-25
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a processing method for thin-walled locking rings with grooves, so as to solve the difficulty in processing thin-walled locking rings with grooves in the prior art. larger technical issues

Method used

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  • Method for machining grooved thin-walled lock ring part
  • Method for machining grooved thin-walled lock ring part
  • Method for machining grooved thin-walled lock ring part

Examples

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Embodiment

[0044] In this embodiment, the processing process of the lock ring part at the head end of an aviation fuel nozzle is taken as an example. The lock ring part at the head end of the aviation fuel nozzle includes an annular thin-walled structure, and the end of the annular thin-walled structure is provided with a plurality of groove structures. The groove structures are arranged symmetrically.

[0045] The specific processing process is as follows:

[0046] Step 1. Select the bar as the raw material for parts processing;

[0047] Step 2. Use a precision instrument lathe or a CNC lathe to turn the outer circle of the part on the raw material, and rough boring and milling the inner hole of the part to obtain a semi-finished part;

[0048] Step 3. Assemble the semi-finished part in the part mounting hole of the grinding tank tooling, the outer circle of the semi-finished part fits with the inner wall of the part mounting hole of the grinding tank tooling, and the gap is less than ...

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Abstract

The invention discloses a method for machining a grooved thin-walled lock ring part. The method comprises the steps that cylindrical lathe cutting of a raw material is carried out, rough machining ofan inner hole is carried out, and the inner hole is reserved for machining allowance to obtain a semi-finished part; a groove grinding process is adopted, and a groove structure is machined through grinding at the end of the semi-finished part; and finish machining of the inner hole is carried out on the semi-finished part with the preset groove structure to obtain the grooved thin-walled lock ring part. the method combines the structural characteristics of the thin-walled lock ring part, cylindrical lathe cutting and rough machining of the inner hole are carried out firstly, and then the groove grinding process is adopted to achieve the machining of a thin-walled groove; through machining the inner hole in two steps, the accuracy of the inner hole is improved, and during the groove grinding process, the wall thickness of the part is increased, and the difficulty of the groove grinding process is reduced; according to the method, a precise surface can be obtained on the part, the generation of large-area burrs is avoided, machining errors of the part are effectively reduced, the probability of fracture of a thin-walled tooth is reduced, the quality of the part is improved, the machining process is simple, and the percent of pass is high.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a processing method for parts such as a thin-wall lock ring with grooves. Background technique [0002] as attached figure 1 , 2 As shown, the lock ring part at the head end of a fuel nozzle is a grooved thin-walled lock ring type part, and the end of the annular thin-walled structure is provided with a groove structure, and the part material is stainless steel; The position of parts such as cyclones and caps and the control of their circumferential rotation need to be deformed during use; most of these parts are thin-walled parts with a thickness of only 0.3-0.5mm. [0003] At present, turning and milling are mostly used to complete the forming of parts. The disadvantage is that the burrs after milling are too large to be removed, and the force in the process is too large to make the size of the parts out of tolerance; if turning and EDM are used to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 李飞席丽娜涂娇智勇李磊杨利飞刘冯涛张亚军
Owner AECC AVIATION POWER CO LTD
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