Method for detecting diameter of outer wall of tapered case of aviation engine on line

Abstract

The invention discloses a method for detecting the diameter of an outer wall of a tapered case of an aviation engine on line. According to the method, a five-coordinate numerical control milling center with a Renishaw MP10 trigger-type measuring head is equipped, tapered case parts and a mounting seat on the surface of a tapered case are equipped; a fine adjustment ring gauge of the used measuring head is measured on line; a point contact-type measurement mode is adopted; a machine tool siemens control system Sinumeric 840 D on-line measurement technology is adopted; and an on-line measurement quick tool path amendment and error compensation generation technology is adopted. The method has a broad application prospect; and by the on-line measurement technology, a numerically-controlled machine tool is impelled to form a machining and detecting integrated numerical control machining unit. By the method, the traditional manufacturing mode that a design characteristic is equipped with a set of measurement tool in the current industry is changed, the manufacturing cost of the tool is saved, repair labor-hour is saved, and first-pass yield of product processing is improved, so that the development period and the production cost of new products are reduced.

Description

technical field

[0001] The invention relates to the technical field of automatic detection of surface dimensions of parts with complex profiles after numerical control machining in the machining industry, and in particular relates to an on-line detection method for the diameter of the tapered outer wall of an aero-engine casing. Background technique

[0002] With the rapid development of the aero-engine manufacturing industry, there are more and more types of new product development, not only pursuing the development progress and cost, but also paying more attention to the initiative to win the competition with product quality. This field puts forward higher and higher requirements for machining accuracy and efficiency. Enterprises generally check the positional tolerances of those complex surface features that cannot be detected by general measuring tools and special measuring tools in the finished product inspection and supply and demand end links. After the end, it is unl...

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