Combined clamp for cutting edges of aero-engine blade forgings and edge cutting method

• Main Authors: LU YANLIANG, MU JUNCHANG, HUANG LIANJIE, MA XIAODONG, CHEN YUZHEN, ZHAO CHUNYAN, CHEN YUE, LEE YEOL, HU JIYUN, WANG ZHUO
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL

The invention discloses a combined clamp for cutting edges of aero-engine blade forgings and an edge cutting method. When an optical fiber laser cutting machine is adopted for edge cutting, the combined clamp is composed of an edge cutting dragging block, a silica gel gasket and an inner hexagon screw, and when an electric spark wire cutting machine is adopted for edge cutting, the edge cutting dragging block and the silica gel gasket are combined. The combined clamp is composed of a trimming dragging block, a conductive positioning block and a fastening screw. The positioning cavity of the trimming dragging block is enlarged by a certain gap on the basis of a finish forging mold cavity without considering the shrinkage rate, and follows a 6-point positioning rule when a blade forge piece is designed, so that accurate clamping positioning of the blade can be realized, the profile of the cutting dragging block is reduced by a certain offset gap on the basis of the trimming profile of the blade forge piece, and