Cutting processing machine and cutting processing method

A cutting processing machine comprising:

• a processing machine body configured to perform cutting processing to a processing object;
• and
• an NC device configured to control the processing machine body;
• wherein
• the NC device comprises:
• a tool diameter correction amount calculator configured to generate tool diameter correction information for correcting a tool diameter of a cutting tool used for performing the cutting processing to the processing object in accordance with a processing program and a processing condition set based on product shape information indicating a size and a shape of a final processed product obtained by performing the cutting processing to the processing object;
• a processing trace calculator configured to generate a tool diameter correction control signal including a cutting processing correction condition based on the processing program, the processing condition, and the tool diameter correction information;
• and
• a driving controller configured to generate a drive control signal for controlling the processing machine body based on the tool diameter correction control signal;
• wherein
• the processing machine body comprises:
• a processing unit configured to perform the cutting processing to the processing object by changing a position relative to the processing object;
• and
• a tool trace controller configured to control a tool trace that corresponds to the cutting tool and includes a noncircular shape based on the drive control signal;
• wherein
• in a case where the processing condition includes cutting tool change information set with a change of the tool trace during the cutting processing and set such that a control center point for controlling the tool trace is fixed relative to a surface to be processed of the final processed product at a time of changing the tool trace;
• the tool diameter correction amount calculator recognizes a plurality of tool traces included in the cutting tool change information and generates the tool diameter correction information that includes the plurality of tool traces, positions formed with a surface to be processed that are switch reference positions of the plurality of tool traces, each control center point of the plurality of tool traces, and tool diameter correction values corresponding to a distance from the control center point to each position formed with the surface to be processed;
• the processing trace calculator generates the tool diameter correction control signal for switching the plurality of tool traces;
• and
• the processing machine body, based on the tool diameter correction control signal, fixes the control center point, causes the positions formed with the surface to be processed to be matched, and switches the tool trace such that the tool diameter correction values have the same value.