Machining method of aviation parts spinning blanks

A technology for machining and parts, applied in the field of machining of blanks of spinning parts for aerospace parts, can solve the problems of uneven blank allowance and low processing efficiency of spinning parts, so as to reduce the degree of human intervention and improve processing efficiency. , The effect of shortening the processing cycle

Active Publication Date: 2021-01-01
CHINA HANGFA SOUTH IND CO LTD
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AI Technical Summary

Problems solved by technology

[0008] The invention provides a machining method for spinning blanks of aviation parts to solve the technical problems of uneven allowance and low processing efficiency in the process of spinning blanks

Method used

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  • Machining method of aviation parts spinning blanks
  • Machining method of aviation parts spinning blanks

Examples

Experimental program
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Effect test

Embodiment 1

[0058]Take the processing of a certain type of engine combustion chamber casing as an example. The engine combustion chamber casing is a typical spinning part, such asfigure 2 As shown, the known surface taper α=16°.

[0059]According to the theoretical dimensions of the parts of the combustion chamber casing and the theoretical dimensions of the parts, the theoretical unilateral allowance A of the inner and outer surface of the part is calculated to be 3mm, and the remaining finishing allowance is 0.15mm. The processing steps are as follows:

[0060]S1. After aligning and clamping the parts, perform the first rough machining on the outer surface to remove the rough machining allowance LCrude =2mm;

[0061]And judge whether the part continues to perform the second step of rough machining of the outer surface:

[0062](1) If all the outer surface is processed in place, then according to the theoretical unilateral allowance, skip to the third step to process down, and there is no need to advance ...

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Abstract

The invention discloses a method for machining a workblank of a spinning part of an aviation part. When the workblank of the spinning part of the aviation part is machined, a first machining allowanceis determined through calculation when it is determined that an outer profile is not completely machined in place, in the subsequent processes of rough machining, semi-finish machining and finish machining, a cutter is normally aligned in the X direction, the cutter compensation is kept unchanged, and the first machining allowance of the cutter compensation in the Z direction or the cutter withdrawal is adjusted and carries out machining. The method is named as a fixed-X adjusting-Z method, under the condition that the profile allowance is preliminarily determined, and according to the profile taper of the part, the obtained X-direction allowance is uniformly converted into an allowance needed to be adjusted and machined in the Z direction by utilizing the trigonometric function relation,a radial point position is kept unchanged during machining, and the allowance is adjusted to carry outmachining in the Z direction, so that the size control in the machining process is convenient, the allowance is accurately calculated without the aid of a measuring tool, and the deviation between a machined size and a theoretical required size is avoided.

Description

Technical field[0001]The invention relates to the technical field of aeroengines, in particular to a machining method for aerospace parts spinning parts blanks.Background technique[0002]After the machining blanks are changed from forgings to spinning parts, the machining allowance is greatly reduced, which shortens the processing time for subsequent processing and improves the processing efficiency. However, the spinning part blank is limited by its forming process, and its axial and radial blank reference fluctuates, the size fluctuates greatly, and the margin is uneven. How to efficiently determine the machining allowance has become the key to processing such parts.[0003]The traditional processing method is to repeatedly turn the inner and outer surface of the part by multi-pass general turning process, assist the fixture to calculate the machining allowance, and cut the inner and outer surface of the fine turning and the installation edge.[0004]This method has the following probl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 赵丹丹赵宇平柏慧蒋绍堂
Owner CHINA HANGFA SOUTH IND CO LTD
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