TOOTH SETTING AND DRESSING METHOD IN SLICING DEVICE AND ITS DEVICE

• Main Authors: OUCHI HISAO, KAWAGUCHI KEIJI, HAMAZAKI TATSUMI
• Format: Patent
• Language: English
• Published: 27.04.1993
• Subjects: DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; MACHINE TOOLS; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; POLISHING; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL; WORKING STONE OR STONE-LIKE MATERIALS

PURPOSE:To detect cutting resistance at the time of cutting a wafer for automatically dressing an inner peripheral cutting edge to set the teeth of the blade. CONSTITUTION:In a slicing device which moves a workpiece 8 in the radial direction of a blade 3 to the inner peripheral cutting edge 5 of a blade 3 rotating at high speed to cut the workpiece 8 to fixed thickness for producing a wafer, cutting resistance at the time of cutting the workpiece is detected, and voltage is applied between an electrode 13 provided opposite to the cutting edge 5 and the blade 3 on the magnitude of the cutting resistance to execute the electrolytic dressing of the cutting edge 5 for keeping the cutting resistance constant. A device to execute this method is provided in a workpiece holding section 10, and has a cutting resistance detecting means 12 to detect the cutting resistance at the time of cutting the workpiece, the electrode 13 arranged opposite to the cutting edge 5, a power source device 14 to apply the D.C. voltage for the electrolytic dressing of the cutting edge between the electrode 13 and the blade 3, and a control means 15 for turning on and off the power source device 14 on the magnitude of the cutting resistance detected by the cutting resistance detecting means 12.