Tool path modification device and tool path modification method

Abstract

A tool path modification device (100) is provided with: a cut point calculation unit (107) for calculating, on the basis of tool path data, tool data, and shape data, cut point information which is information relating to a point to be worked by a tool on a working curve of a working shape when disposed at an instruction point described in the tool path data; a modified instruction point extraction unit (109) for extracting, on the basis of the tool path data and the cut point information, a modified instruction point which is an instruction point to be modified from the instruction point described in the tool path data; an instruction point modification direction determination unit (111) for determining, on the basis of the modified instruction point, an instruction point modification direction which is a direction in which the modified instruction point is to be modified; and a tool path data modification unit (113) for modifying the tool path data.

Description

technical field [0001] The present invention relates to a tool path correction device and a tool path correction method for correcting tool path data for machining an object to be machined by a numerically controlled (Numerical Control: NC) machine tool. Background technique [0002] Conventionally, when machining a free-form surface, after creating tool path data using CAD (Computer Aided Design) and CAM (Computer Aided Manufacturing) devices, the tool path data is given to an NC machine tool for cutting. The path data represent a path for virtually moving the tool so as to be in contact with a free-form surface of a machining object by approximating straight lines, arcs, and curves with minute line segments. [0003] Tool path data output from CAD and CAM devices are mainly described as NC programs, and the NC programs are input to NC devices included in NC machine tools. [0004] The NC device reads and analyzes the NC program to generate a tool path, which is a path of ...

AI Technical Summary

Problems solved by technology

[0013] (1) It takes longer to create and output tool path data with CAD and CAM devices

[0014] (2) The data volume of the tool path data input to the NC device becomes huge

[0015] (3) Due to the huge amount of tool path data, the processing speed cannot be increased

[0016] (4) Due to these problems, the work efficiency is reduced

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