US 12,330,253 B2
Processing machine and production method for object subject to processing
Takanobu Akiyama, Shizuoka (JP)
Assigned to SHIBAURA MACHINE CO., LTD., Tokyo (JP)
Appl. No. 18/248,282
Filed by SHIBAURA MACHINE CO., LTD., Tokyo (JP)
PCT Filed Sep. 14, 2021, PCT No. PCT/JP2021/033661
§ 371(c)(1), (2) Date Apr. 7, 2023,
PCT Pub. No. WO2022/080062, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 2020-172427 (JP), filed on Oct. 13, 2020.
Prior Publication US 2023/0405752 A1, Dec. 21, 2023
Int. Cl. B23Q 15/22 (2006.01); B23Q 17/20 (2006.01); B23Q 17/22 (2006.01)
CPC B23Q 15/22 (2013.01) [B23Q 17/20 (2013.01); B23Q 17/2233 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A processing machine comprising:
a table configured to hold a workpiece;
a spindle configured to hold a tool;
a first motor configured to move the table and the spindle relative to one another in a first direction;
a first sensor configured to detect relative positions of the table and the spindle in the first direction;
a touch sensor which is arranged at a position having a certain positional relationship with the spindle and thereby relatively moves in the first direction with respect to the table along with the relative movements of the table and the spindle in the first direction by the first motor;
a control device configured to control the first motor 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 that relatively moves in the first direction with respect to the spindle along with the relative movements of the table and the spindle in the first direction by the first motor, wherein
the control device comprises at least one processor and at least one memory storing instructions that, when executed by the at least one processor, implement the following:
a processing control part configured to control the first motor 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 motor based on the detection values of the first sensor so that the reference workpiece is processed from the first direction by the tool from an initial shape 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 a 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.