Tool path correction device and tool path correction method

Abstract

The tool path correction device (100) includes: a cut point calculation unit (107) for machining a machined shape when it is arranged toward a command point described in the tool path data, based on the tool path data, tool data, and shape data. Calculate the information of the processed point on the curved surface and processed by the tool, that is, the information of the cut point; the correction instruction point extraction unit (109) corresponds to the instruction point described in the tool path data based on the tool path data and the information of the cut point. The corrected command points are extracted, that is, the corrected command points; the command point correction direction determination unit (111), based on the corrected command points, determines the corrected direction of the corrected command points, that is, the command point correction direction; and the tool path data correction unit (113) ), which modifies the toolpath 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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