To fix a workpiece accurately in a prescribed direction, decrease an inoperative time as short as possible in a device, and also simplify a structure of the device.

A device has a base unit 21 provided capable of mounting/ removing so as to be mounted in a prescribed position relating to a first position in a workpiece fixed part of a wire saw, first direction jig 20 having a positioning member provided capable of position adjusting relating to the first position on the base unit 21 to be provided with the positioning member in a prescribed reference position relating to the wire saw 10 on the base unit 21 mounted in the workpiece fixing part 14, and a bonding base provided capable of mounting/removing so as to be mounted in a prescribed position relating to the first direction on the first direction jig also provided so as to be fixed in a prescribed position relating to the first direction to the workpiece fixing part 14 to position and bond a mounted ingot to a prescribed bonding position relating to the first direction.