Z-type process connection method for CNC curved surface machining

Abstract

The invention relates to a Z-shaped process connection method for machining the shape of a numerically controlled curved surface, belonging to the technical field of numerically controlled machining. The steps are as follows: 1) Arrange the spatial position of the parts in the wool, requiring: the distance between the highest surface A of the wool and the process connection surface B is ≥ 3mm; When machining the shape, use the square shoulder milling cutter to fully process all the theoretical shape surfaces, and the lowest cutting depth surface C of the tool should be 1-2mm lower than the process connection surface B1-2mm; The window is opened in the direction, and the edge strip at the window is finished to size to form a mesh process connection; 4) After the parts are processed, the square shoulder milling cutter is used to thin the connection, leaving a margin of 0.1-0.2mm on the side. The present invention adopts the above-mentioned method, can be molded at one time, is fully numerically controlled, has high processing efficiency and good precision.

Description

technical field [0001] The invention is aimed at a processing method for processing curved surface shapes in numerical control milling, and belongs to the technical field of numerical control processing. Background technique [0002] The development of modern aircraft continues to develop in the direction of high specific strength and high specific stiffness, and its structure is more complex than traditional ones. It continues to develop in the direction of multi-curved and full-curved theoretical shapes. The new structural form has great advantages over the traditional structure, and it also poses a huge challenge to the manufacturing process and manufacturing method. Compared with multi-curved surfaces and double-sided structural parts with full-curved theoretical shapes, the traditional process methods are generally as follows: [0003] 1. There is a process connection on the surface of the theoretical shape, and then the process connection is milled by a conventional m...

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Problems solved by technology

[0005]3. During CNC machining, the process connection is left on one side, then the connection is thinned, and the parts are cut by the fitter, and the process connection is polished; The above methods are all based on the premise that the fitter has a high level of skill. It cannot achieve full digital processing, and it is also difficult to control the quality of parts. Human intervention in the theoretical shape of the aircraft will affect the stealth effect of the aircraft.

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