Cold working method of special-shaped aviation thin-walled parts

Abstract

The invention discloses a cold working method for special-shaped aviation thin-walled parts, which comprises the following steps: processing a blank into a part blank consisting of a thin-walled part with a thickness of 6mm and a process table on at least one side of the thin-walled part; The inner side of the web is detachably fixed with a support plate used to prevent the vibration of the thin-walled part during milling; the thin-walled part on the side without the support plate is milled until the thickness of the thin-walled part is at most equal to 3mm. A circular through hole or a circular groove is formed at the center of the web; the process table connected with the thin-walled parts is removed; the support plate fixedly installed on the web is removed to form a finished product.

Description

technical field [0001] The invention relates to a thin-walled part processing technology, in particular to a cold working method for special-shaped aviation thin-walled parts. Background technique [0002] It is well known that the drag coefficient of an aircraft must be small, its own weight must be controlled, and its strength must be high enough. Various characteristics determine the special-shaped and thin-walled structure of aircraft parts. During the milling process of these thin-walled structural parts, the shear force generated by the rotation of the tool will cause the thin wall to vibrate due to insufficient strength, and the parts that vibrate repeatedly will damage and overcut the parts where the tool passes, such as parts overcut Means the part is scrapped. [0003] At present, the vacuum milling and clamping method and plaster filling method are generally used for processing. The vacuum milling and clamping method must rely on auxiliary equipment (vacuum pumpi...

AI Technical Summary

Problems solved by technology

During the milling process of these thin-walled structural parts, the shear force generated by the rotation of the tool will cause the thin wall to vibrate due to insufficient strength, and the parts that vibrate repeatedly will damage and overcut the parts where the tool passes, such as parts overcut means the part is scrapped

[0003] At present, the vacuum milling and clamping method and plaster filling method are generally used for processing. The vacuum milling and clamping method must rely on auxiliary equipment (vacuum pumping machine), and the fixture itself must be milled, and can only be used to process the corresponding parts. It can be seen that the cost of this method High, long production cycle, no versatility

[0004] The gypsum filling method is to stick the tempered soft gypsum on the back of the thin-walled parts and wait for the gypsum to solidify before processing to prevent the parts from vibrating. Waste also pollutes the environment

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