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71. 发明专利

JPH08243837A METHOD AND DEVICE FOR CONTROLLING BAND SAW IN BAND SAW MACHINE 失效
公开(公告)号：JPH08243837A
公开(公告)日：1996-09-24
申请号：JP8443695
申请日：1995-03-06
申请人： SAITO SEIKI KK
发明人： SAITO MINORU
IPC分类号： B23D55/00 , B23D59/04
摘要： PURPOSE: To prevent generation of metal fatigue and thermal expansion in a band saw due to a repeated load, by pressing a curve protruding side to a sinking side to reset the band saw to a linear shape by an external pressure acting in a side face of the band saw, relating to curving an adjacent part to a cut object of the band saw in a side face direction. CONSTITUTION: When a band saw 5 is curved to the right (left end face is sunk right end face is protruded), a detector 11a, increasing a distance to a sinking left side face of the band saw 5 longer than at linear shape time, generates an electric signal of level, in accordance with this distance, output. This output signal is given to an adjusting valve 16c in a curve protruding right side face of the band saw 5, to increase a pressure of fluid 15 higher than a fixed pressure of the fluid 15 in a sinking side so as to press a curve right protruding side of the band saw 5 to the left. In this way, the band saw 5 is reset to a straight line condition, also to be positioned without coming into contact within a clearance 13 between control units 12a, 12b, so as to fill inside the periphery and a hole 8 with the fluid 15.

73. 发明专利

JPH071442A MANUFACTURE OF WAFER 失效
公开(公告)号：JPH071442A
公开(公告)日：1995-01-06
申请号：JP14769493
申请日：1993-06-18
申请人： SHINETSU CHEMICAL CO
发明人： FUJIMURA YORITO , SHIBANO YUKIO
IPC分类号： B24B27/06 , B23D59/04 , B24B49/14 , B28D1/02 , B28D1/22 , B28D5/04 , H01L21/304
摘要： PURPOSE:To obtain a highly accurate wafer of little surface undulation and thickness irregularity by suppressing the temp. rise of an abrasive grain slurry by controlling the temp. in the close vicinity of the surface of the roller of a wire saw for cutting an ingot. CONSTITUTION:An abrasive grain slurry 12 controlled in its temp. is allowed to directly flow to a roller 2 and the temp. control of the slurry 12 is performed directly under the roller 2 by a temp. sensor 5. When the temp. rise of the abrasive grain slurry 12 caused by the generation of heat in an ingot 3 and a wire saw 1 is detected by the sensor 5, the abrasive grain slurry 12 cooled by a heat exchanger 10 is immediately supplied from a slurry tank 6 by a slurry supply pump 8 and rapid temp. control can be performed without generating a time lag. In the case of ON/OFF control, when a cooled slurry supply valve 15 is turned ON/OFF little by little, the temp. control directly under the roller 2 is extremely reduced in temp. change rate as compared with the temp. control in the slurry tank 6 and the deflection of the roller is stabilized and cutting accuracy is enhanced.

75. 发明专利

JPH03504337A 失效
公开(公告)号：JPH03504337A
公开(公告)日：1991-09-26
申请号：JP50382889
申请日：1989-03-17
IPC分类号： A61B17/14 , A61F2/28 , B23D49/00 , B23D59/02 , B23D59/04 , B23D61/02 , B23D61/12 , B27B19/00

78. 发明专利

JPS63300818A HACKSAW FOR CONDUIT MADE OF METAL 失效
公开(公告)号：JPS63300818A
公开(公告)日：1988-12-08
申请号：JP4879488
申请日：1988-03-03
申请人： RUSHIEN SHII DEYUUKURETSUTO
发明人： RUSHIEN SHII DEYUUKURETSUTO
IPC分类号： B23D49/12 , B23D51/02 , B23D59/04 , B23Q11/02
摘要： A tool for cutting a workpiece (23) comprising a tool body (10); means on the tool body for securing the workpiece; a saw blade (20) movably supported on the body for cutting the secured workpiece, the saw blade having a plurality of cutting teeth (49) movable in a sawing direction and a feeding direction in a cutting plane extending through the workpiece (23); and a bushing (50) on the tool body rotatable about an axis normal to the cutting plane, the bushing being engagable on its periphery by the saw blade teeth (49) and rotatable thereby, after cutting of the workpiece, to restrict movement of the saw blade (20) in the feeding direction while permitting movement of the saw blade in the sawing direction. In the preferred embodiment the bushing (50) includes teeth (51) on the periphery which are of comparable size and spacing to the teeth (49) of the saw blade to clean the latter. The bushing may be made of a bronze porous powder metal which is impregnated with a lubricant for lubricating the saw blade teeth.

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