A numerical control machining method for super-large complex thin-walled parts of titanium alloy

Abstract

The invention provides a numerical control processing method for titanium alloy ultra-large and complex thin-walled parts, which includes the following steps: using a clamp with adjustable support and a modular flexible vacuum clamp of a numerical control machine tool to realize the positioning and clamping of the front and back sides of the part ;A stress-free clamping method for super-large parts is adopted to ensure that there is no clamping stress during the clamping process of the parts; according to the principle of datum coincidence, the establishment of the processing coordinate system is realized by using the automatic online detection function attached to the equipment; The sequence, milling method, cutting amount, etc., formulate the process flow of rough machining, semi-finishing, and finishing; use the equipment's own online detection function to automatically detect the machining accuracy and process compliance of the parts. The method proposed by the invention can realize high-quality and high-efficiency machining of ultra-large thin-walled parts, and effectively controls the deformation of the parts and the out-of-tolerance of geometric dimensions caused by human factors.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a numerical control processing method for ultra-large and complex thin-walled titanium alloy parts. Background technique [0002] In order to improve the performance of the aircraft, the overall design and thin-wall design tend to be widely used for large parts on the aircraft, and the processing and assembly precision is high. Therefore, the overall structure of the part becomes complicated, and the processing difficulty increases accordingly. At the same time, the part itself is made of titanium alloy, which is a difficult-to-machine metal. Due to factors such as large cutting force, high milling heat, and surface springback during processing, the processing efficiency is low and the product quality is unstable. In this way, there are higher requirements for the overall processing methods such as the selection of process equipment, parts clamping, arr...

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Problems solved by technology

Therefore, the overall structure of the part becomes complex, and the processing difficulty increases accordingly.

At the same time, the part itself is made of titanium alloy, which is a difficult-to-machine metal. Due to factors such as large cutting force, high milling heat, and surface springback during processing, the processing efficiency is low and the product quality is unstable.

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