METHOD AND DEVICE FOR CUTTING DIFFICULT-TO-CUT MATERIAL

• Main Author: YAMASAKA MINORU
• Format: Patent
• Language: English
• Published: 02.06.1987
• 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 OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL

PURPOSE:To cut a difficult-to-cut material of non-conductivity and hard fragility, by providing a work and a conductive material to be arranged spacing a dis tance and applying pulse voltage between the conductive material and a conduc tive rotary grinding wheel, to a surface of which machining fluid adheres, with the conductive material serving as an electrode. CONSTITUTION:A conductive material 2 is juxtaposed providing a space with a work 1, and a pulse voltage supply unit 7 applies pulse voltage between the conductive material 2 and a conductive rotary grinding wheel 3 through a brush 4. And a groove is cut while machining fluid 6 is injected from a machining fluid supply pipe 5 to a part where the conductive rotary grinding wheel 3 is adapted to the conductive material 2. Here a device generates an electric discharge between the conductive rotary grinding wheel 3 and the conductive material 2 through the machining fluid 6 while a dressing effect which removes blocking due to a metallic binding material, easily generated in an end face 8a and a side surface 8b, by electrochemical action. In this way, a hard fragile further non-conductive material difficult to be cut can be machined high accurate ly and high efficiently.