Processing machine and production method for object subject to processing

A processing machine comprising:

• a workpiece holding part configured to hold a workpiece;
• a tool holding part configured to hold a tool;
• a first drive source configured to move the workpiece holding part and the tool holding part relative to one another in a first direction;
• a first sensor configured to detect relative positions of the workpiece holding part and the tool holding part in the first direction;
• a touch sensor which is arranged at a position having a certain positional relationship with the tool holding part and thereby relatively moves in the first direction with respect to the workpiece holding part along with the relative movements of the workpiece holding part and the tool holding part in the first direction by the first drive source;
• a control device configured to control the first drive source based on detection values of the first sensor;
• and
• a reference workpiece holding part configured to hold a reference workpiece for measuring a deviation of the position of the tool, and relatively moves in the first direction with respect to the tool holding part along with the relative movements of the workpiece holding part and the tool holding part in the first direction by the first drive source, wherein
• the control device comprises:
• a processing control part configured to control the first drive source based on the detection values of the first sensor and thereby process the workpiece by the tool and
• a correction part configured to correct the control of the processing control part, the correction part comprising:
• a reference workpiece processing part configured to control the first drive source based on the detection values of the first sensor so that the reference workpiece is processed from the first direction by the tool and becomes a predetermined target shape,
• a reference workpiece measurement part configured to measure a shape of the reference workpiece based on
• touch sensor position information stored and showing correspondence between a position of the touch sensor and the detection values of the first sensor and
• a detection value of the first sensor at the time when contact in the first direction of the touch sensor with respect to the reference workpiece after processing is detected by the touch sensor,
• a tool deviation identification part configured to identify a first amount of deviation of a position of the tool in the first direction based on an amount of deviation in the first direction between the target shape and the shape measured, and
• a correction processing part configured to correct the control of the processing control part based on the first amount of deviation identified.