Complex profile curve grinding error in-situ detection device and method

Abstract

The invention discloses a complex profile curve grinding error in-situ detection device and method. The detection device includes a motion controller, a computer, a position measurement member, a slide table assembly, a tool nose arc grinding wheel, and an image acquisition member. The detection method includes: calculating a machining error and determining reasons for the error according to different relative positions among a tool nose arc center theoretical position of the front end of the tool nose arc grinding wheel, a work piece theoretical machining point position and a work piece actual profile; and adopting different method to further determine the direction and the size of the error according to different reasons for the errors if the machining error exceeds an error limit. The detection device can detect the size and the directions of multiple errors such as grinding wheel abrasion, machine tool geometric errors, machine tool thermal errors during a curve grinding machining process, is comprehensive in detection, is high in precision, and can provide a basis for later error compensation so as to improve the machining precision of curve grinding.

Description

technical field [0001] The invention relates to a technology in the field of error detection, in particular to an in-situ detection device and method for complex contour curve grinding errors. Background technique [0002] The rapid development of modern manufacturing technology puts forward higher requirements for the complexity and machining accuracy of parts. As a precision machining method for complex parts, curve grinding has become an important research topic on how to improve its machining accuracy. As an economical and effective method to improve machining accuracy, error compensation has been widely used in research. In order to compensate for errors, it is first necessary to detect errors in the machining process. [0003] The traditional optical curve grinder uses the projection method to enlarge the actual contour projection of the workpiece, and compares it with the theoretical contour to manually judge whether the processing is qualified. Because this method...

AI Technical Summary

Problems solved by technology

[0006] The above error detection method can only detect the wear of the grinding wheel during the curve grinding process, and cannot effectively detect the machining errors caused by the geometric errors of the machine tool and some thermal errors, and cannot compensate these errors in the subsequent error compensation, so that it cannot Achieve high machining accuracy

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