US 12,377,579 B2
Cutting method and cutting device
Takayuki Kusumi, Akita (JP); Yoichi Akagami, Akita (JP); and Masami Echigoya, Akita (JP)
Assigned to AKITA PREFECTURE, Akita (JP)
Filed by AKITA PREFECTURE, Akita (JP)
Filed on Jun. 21, 2021, as Appl. No. 17/352,412.
Application 17/352,412 is a continuation of application No. PCT/JP2019/049487, filed on Dec. 17, 2019.
Claims priority of application No. 2018-243799 (JP), filed on Dec. 26, 2018.
Prior Publication US 2021/0308905 A1, Oct. 7, 2021
Int. Cl. B28D 5/04 (2006.01); B23D 61/18 (2006.01); B24B 1/00 (2006.01); B24B 27/06 (2006.01); B24B 57/02 (2006.01); B28D 5/00 (2006.01)
CPC B28D 5/045 (2013.01) [B23D 61/185 (2013.01); B24B 1/002 (2013.01); B24B 27/06 (2013.01); B24B 57/02 (2013.01); B28D 5/007 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A cutting method for cutting a workpiece using a wire tool, comprising:
supplying a slurry containing abrasive grains having an electrical dielectric property to a region of the workpiece into which the wire tool, which includes a wire made of a metal or an alloy and an insulating layer formed on a surface of the wire, cuts;
generating an alternating electric field in a region between the wire tool and the workpiece by way of connecting an electrode electrically to the wire located inside the insulating layer of the wire tool, connecting another electrode electrically to the workpiece, and applying an alternating voltage having a frequency of 0.1 Hz to 30 Hz between the wire tool and the workpiece; and
running the wire tool along a direction in which the wire tool is drawn while the wire tool abuts on the workpiece, wherein
the slurry includes an insulating liquid having a viscosity in a predetermined range,
the alternating voltage is applied between the wire located inside the insulating layer and the workpiece in a state that the slurry is supplied to the region between the wire tool and the workpiece to apply the alternating electric field to the insulating liquid and the abrasive grains which are contained in the slurry in a state that the workpiece and the slurry are insulated from the wire by the insulating layer.