Nippei Toyama Corporation

Kazuo Nakajima

Kenichiro Nishi

Shirou Murai

Mitsuru Nukui

Toyotaka Wada

Tetsuo Okuyama

Tomio Nakagawa

A workpiece receiving hole,for fittingly receiving a workpiece,is formed in the center of a rotary disk,which is thinner than the workpiece,. A workpiece drive section,which engages a notch,formed for the purpose of orienting the workpiece,relative to crystal orientation is formed along the brim of the hole,. A gear,is rotated by a gear,of a motor,, thereby rotating the rotary disk,and imparting torque to the workpiece,. Accordingly, both surfaces of the workpiece are ground by means of a double disc surface grinder.

Grinding method, surface grinder, workpiece support, mechanism and work rest

A spindle,of a grinding wheel,is rotatively borne by a bench,for the grinding wheel through hydrostatic thrust bearings,and,. A pressure regulator,for regulating the pressure which must be supplied to at least either of supply ports,and,opposite to each other in the direction of the axial line of the spindle,in the hydrostatic thrust bearings,and,is provided. The pressure regulator,has a changing member for changing a passage for choking the fluid and the length of the choking passage.

Feeding a grinding wheel in grinding method

A method of slicing an ingot wherein a pre-cut work 3 in which a holding member 2 extending over the entire length of a side surface of a cylindrical ingot 1 is bonded to the side surface of the ingot 1 is set on a slicing apparatus 4, and the pre-cut work 3 is split into a multiplicity of pieces over its longitudinal direction so as to obtain disk-shaped works 5 to be ground, characterized in that a retaining member 2 is used in which a retaining layer 7 which is directly bonded to the side surface of the ingot 1 by a first adhesive agent having an adhesive strength sufficient to receive a rotating force due to a grinding apparatus 6 in a subsequent grinding process, an intermediate layer 8 which is bonded to said retaining layer 7 in a superposed manner by a second adhesive agent whose adhesive strength deteriorates more than that of the first adhesive agent under a fixed condition, and a supporting layer 11 which is connected to said intermediate layer 8 and is connected to a supporting portion 10 of said slicing apparatus 4 are integrally superposed one on top another.

Ingot slicing method, an ingot manufacturing method and a sliced ingot

A spindle 23 of a grinding wheel 28 is rotatively borne by a bench 22 for the grinding wheel through hydrostatic thrust bearings 26 and 27. A pressure regulator 38 for regulating the pressure which must be supplied to at least either of supply ports 26a and 27a opposite to each other in the direction of the axial line of the spindle 23 in the hydrostatic thrust bearings 26 and 27 is provided. The pressure regulator 38 has a changing member for changing a passage for choking the fluid and the length of the choking passage.

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Toyama, Japan

Kazuo Nakajima