Method for achieving cutter radius compensation control for arc cutter path in numerical control system

Abstract

The invention relates to a method for achieving cutter radius compensation control for an arc cutter path in a numerical control system. The method comprises the following steps: conducting offset andconnection on a cutter path track; adding, deleting and modifying the switching part according to the included angle between the tool path tracks and the tool path compensation direction; carrying out interference detection on the obtained track; and carrying out avoidance processing on the detected circular arc part which generates interference. By the adoption of the method for achieving cutterradius compensation control for the arc tool path in the numerical control system, machined workpieces are still fillets, and the cutter radius compensation problem of arcs with the radius smaller than the tool compensation radius is solved. On the premise that a tool path is not changed and overcutting is not generated, the compensated track needs to cut the workpiece to the maximum extent as much as possible.

Description

technical field [0001] The invention relates to the field of numerical control systems, in particular to the field of tool path compensation, and specifically refers to a method for realizing tool radius compensation control for arc tool paths in a numerical control system. Background technique [0002] At present, many CNC system companies (such as FANUC, etc.) figure 1 Shown) the tool radius compensation method is to directly convert the arc into a line segment for tool radius compensation (such as figure 2 shown), although the arc whose radius is smaller than the tool compensation radius cannot be completely cut in place, this method actually modifies the tool path input by the user and loses the original processing information. Such as figure 2 Shown is the compensation result of the prior art. It can be seen that the fillet is cut flat during processing, and the original characteristics of the tool path are lost. Contents of the invention [0003] The purpose of ...

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Problems solved by technology

[0002] At present, many CNC system companies (such as FANUC, etc.) figure 1 Shown) the tool radius compensation method is to directly convert the arc into a line segment for tool radius compensation (such as figure 2 shown), although the arc whose radius is smaller than the tool compensation radius cannot be completely cut in place, this method actually modifies the tool path input by the user and loses the original processing information

like figure 2 Shown is the compensation result of the existing technology, it can be seen that the fillet is cut flat during processing, and the original characteristics of the tool path are lost

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