US 12,440,909 B2
Control device for machine tool
Yuuki Kumamoto, Yamanashi (JP); and Kenta Yamamoto, Yamanashi (JP)
Assigned to FANUC CORPORATION, Yamanashi (JP)
Appl. No. 17/906,696
Filed by FANUC CORPORATION, Yamanashi (JP)
PCT Filed Mar. 24, 2021, PCT No. PCT/JP2021/012230
§ 371(c)(1), (2) Date Sep. 19, 2022,
PCT Pub. No. WO2021/193712, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 2020-056080 (JP), filed on Mar. 26, 2020.
Prior Publication US 2023/0133532 A1, May 4, 2023
Int. Cl. B23F 23/12 (2006.01); B23Q 15/013 (2006.01); G05B 19/401 (2006.01)
CPC B23F 23/12 (2013.01) [B23Q 15/013 (2013.01); G05B 19/401 (2013.01); G05B 2219/35519 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control device for a machine tool that machines a workpiece including at least one tooth surface, the control device for a machine tool comprising:
a processor,
the processor being configured to perform functions that comprise:
a function of inputting a machining condition including at least one selected from specifications of the workpiece, specifications of a tool, a feedrate, a spindle speed, and the number of teeth;
a function of calculating, based on the machining condition inputted, a surface pattern defined depending on intervals between scratches generated on a machined surface;
a function of generating, based on the surface pattern calculated, an oscillation command for achieving a surface pattern including a portion in which the intervals between the scratches are unequal, the oscillation command having an oscillation frequency or an oscillation frequency magnification that is different from a frequency causing the scratches to be formed at equal intervals; and
a function of carrying out machining while oscillating the workpiece and the tool relative to each other based on the oscillation command generated.