Rapid numerical control programming method suitable for complex slender surface of part
A CNC programming, slender technology, applied in the field of CNC programming, can solve the problems of waste of resources, high intensity, high redundancy of CAM CNC programming tool path, and achieve the effect of improving the level of automation and accuracy
Pending Publication Date: 2022-02-25
JIANGSU UNIV OF SCI & TECH
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[0008] Purpose of the invention: The purpose of the invention is to provide a fast NC programming method suitable for complex and slender surfaces of parts, so as to solve the problems of low manual programming efficiency, high strength and redundant CAM NC programming tool tracks when processing complex and slender surfaces in today's enterprises Resource waste caused by high
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[0058] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, those skilled in the art will modify the various equivalent forms of the present invention and all belong to the appended claims of the present application. limited range.
[0059] Such as figure 1 As shown, a kind of fast numerical control programming method applicable to the complicated slender surface of parts described in the present invention comprises the following steps:
[0060] (1) Import the MBD model of the part to obtain the processing features
[0061] Import the part MBD design model into the 3D CAD software NX, and use the NX secondary development technology to automatically obtain the slender surface features marked by PMI in the model...
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The invention discloses a rapid numerical control programming method suitable for a complex slender surface of a part, which comprises the steps of acquiring processing features of the slender surface, conducting feature view orientation, adjusting the size of the view, exporting an image, carrying out image binaryzation and cavity area filling, calculating a coordinate transformation matrix of three-dimensional features and a two-dimensional image, extracting a central axis contour line of a binary image by using a skeleton extraction algorithm to obtain a scattered contour line point set, carrying out point cloud processing on the point set, sorting by using a point cloud sorting algorithm, fitting the central axis contour line of the slender surface by using a segmented curve fitting algorithm, projecting the fitted contour line to a machining feature surface through a coordinate transformation matrix, combining projection lines to obtain a reference machining track, performing post-processing to generate an NC code, and performing simulation verification and optimization. Redundant tool paths can be effectively reduced and the numerical control programming efficiency can be improved by processing the slender surface features, so that the automation level of slender surface numerical control programming is effectively improved, the enterprise processing cost is reduced, and the product manufacturing period is shortened.
Description
technical field [0001] The invention relates to numerical control programming, in particular to a fast numerical control programming method suitable for complex and slender surfaces of parts. Background technique [0002] There are a large number of slender surface features in existing mechanical parts. The NC programming methods for this feature mainly include manual programming and CAM software automatic programming; although some slender surface NC programs can be completed by manual programming, but for For some slender surfaces with complex arc shapes, manual programming is not only error-prone, but also inefficient; nowadays, manual programming has been gradually adopted by enterprises due to the high technical requirements for programmers, low programming efficiency and high labor intensity. abandon. Although the CAM automatic programming method can perfectly solve the problems existing in manual programming, the existing CAM software planar milling tool path plannin...
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IPC IPC(8): G05B19/4097
CPCG05B19/4097G05B2219/34248Y02P90/02
Inventor 柳大坤方喜峰王楠张胜文
Owner JIANGSU UNIV OF SCI & TECH