Cutter spacing optimizing method for cydariform knife tool multiple coordinates line width processing

Abstract

This invention relates to one bump knife tool multi-coordinate wide row process optimization method, which comprises the following steps: isolating the tool into one set of intense latitude lines according to its process type; through computation on each latitude line distance to process design curve to get error distribution function; accordingly establishing wide computation method and restrains to form tool optimization module. To avoid backward adjust, the part is selected with one control point and to determine one point beyond for one relative initial position from one point in program public error and the selection point.

Description

technical field [0001] The invention relates to a method for optimizing the tool position and motion track applicable to the machining process of a multi-coordinate numerical control machine tool. The method for optimizing the position and attitude of a drum-shaped tool by dividing the latitude line can be used to precisely control the machining error and greatly improve the machining efficiency. And significantly reduce programming difficulty and workpiece manufacturing costs. Background technique [0002] When machining the curved surface of a cylindrical workpiece with a ball-end cutter, if the radius of curvature of the tool is equal to the radius of curvature in a certain direction at any point on the curved surface of the workpiece, and the concave and convex are opposite, a wide processing area can be processed on the curved surface of the workpiece at one time. The effective width of a region is called the line width. Theoretically, the line width of surface process...

AI Technical Summary

Problems solved by technology

The common deficiencies of these methods are: 1) Using the cutting tool and the workpiece to optimize the tool position at one point is not conducive to the later wave height arrangement of the tool track; 2) The tool position optimization and interference checking are not unified into one model, which requires subsequent Iterative adjustment calculation; 3) Using the method of tangential point calculation can easily lead to error amplification and tool path fluctuations, or even non-convergence; 4) It cannot be used to solve the problem of tool position optimization for drum-shaped knives

This method hopes to directly measure the size of the processing error by using the method of dividing the whole into zero, but the specific method used has theoretical errors.

Ni Yanrong et al. (2001) proposed the basic idea of ​​realizing "optimization of tool positions for wide-line machining" by calculating the error distribution between the tool and the workpiece. Lv Xueli et al. (2003) further proposed the tool-workpiece "shortest distance line pair" (Minimum Distance Line-pair) concept, Kingman et al. (2006) proposed a double-end point error control algorithm, which uses the two end points of the effective characteristic line segment to locate the tool, and solves the problem of the arrangement of the tool path. However, the algorithm uses an inverse function and cannot Combined with conventional optimization methods, it is not conducive to the fusion of other constraints required by the cutting process, and it is also not conducive to the extension to non-annular cutters

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