Split forming die for machining high-precision part with involute port

• Main Authors: ZHANG LONG, LI JIANHUA, QIAO CHUNHUI
• Format: Patent
• Language: Chinese; English
• Published: 21.11.2012
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The utility model discloses a split forming die for machining a high-precision part with an involute port. The split forming die comprises an upper concave membrane and a lower concave membrane which are arranged in an overlapping way, wherein the upper concave membrane and the lower concave membrane are cylinders, and a through hole is formed at the position of the central axis of each of the upper concave membrane and the lower concave membrane; flat cylindrical cavities are formed on contact surfaces of the upper concave membrane and the lower concave membrane; side surfaces of the flat cylindrical cavities are circular-arc-shaped; a split core die which is matched with the inner surfaces of the flat cylindrical cavities is arranged in the flat cylindrical cavities; the split core die is a circular ring with an open middle part; the side surface of the split core die is a circular arc surface; the outer side of the upper surface of the split core die is provided with a circle of groove; the split core die