Invention Grant
- Patent Title: Method for forming tapered piston pins
- Patent Title (中): 锥形活塞销形成方法
-
Application No.: US11502115Application Date: 2006-08-11
-
Publication No.: US07827683B2Publication Date: 2010-11-09
- Inventor: Robert Weiss , Stephen Bangs , James Engdahl , Paul Fecteau
- Applicant: Robert Weiss , Stephen Bangs , James Engdahl , Paul Fecteau
- Applicant Address: US IL Geneva
- Assignee: Burgess - Norton Mfg. Co., Inc.
- Current Assignee: Burgess - Norton Mfg. Co., Inc.
- Current Assignee Address: US IL Geneva
- Agent Edward J. Brosius
- Main IPC: B21K1/44
- IPC: B21K1/44 ; B23P13/04 ; F16C3/04 ; F16C7/00 ; F16C11/06

Abstract:
A method is provided for cold forming center web or webless tapered piston pins in one forming sequence. The method eliminates secondary operations such as but not limited to machining, annealing, coating and secondary forming.The method includes the steps of cutting a metal rod into a substantially cylindrical slug piece, die extruding the slug piece to form a first cavity in the slug piece, optionally die extruding the slug piece to form a second cavity in the slug piece, piercing the slug piece to form the slug piece into a hollow cylindrical piece, die extruding the hollow cylindrical piece at either end to form a hollow cylindrical piece having a taper on an internal surface of the hollow cylindrical piece at either end.
Public/Granted literature
- US20080047125A1 Method for forming tapered piston pins Public/Granted day:2008-02-28
Information query