| 摘要 |
PROBLEM TO BE SOLVED: To improve flatness precision of a thin plate at the time of cutting a bar type work piece such as ingot into the thin plate. SOLUTION: It is constituted of a cylindrical wire guide 3 to guide travelling of a wire by travelling and rotating the wire 2 and to apply tensile force on the wire 2, an ingot holding means 4 to hold ingot 1, a table 5 to vertically move the ingot 1 through the ingot holding means 4 so that the ingot 1 and the travelling wire 2 make contact with each other and pressurize each other, a movable type nozzle 7 to discharge an abrasive containing abrasive grains against the wire 2 and provided in the neighbourhood of the ingot 1 free to move and a control part 8 to control a position of the movable type nozzle 7 so that a distance between the ingot 1 and the movable type nozzle 7 becomes roughly constant in accordance with a cutting position in the diametrical direction on a cutting surface of the ingot 1. |
