Method for producing an external synchronizer ring

Abstract

#CMT# # / CMT# The method involves pre-stamping a flat blank (9), covering an outer annular surface area (10) of a ring body, and sintering an inner annular surface area (11) of the ring body to form a sintered coating. Another sintered inner surface area is formed into a conical shape, where an external gearing is pre-stamped and index tabs are bent. #CMT#USE : # / CMT# Method for producing an external synchronizer ring. #CMT#ADVANTAGE : # / CMT# The method involves pre-stamping a flat blank, covering an outer annular surface area of a ring body, and sintering an inner annular surface area of the ring body to form a sintered coating, and hence increases technical quality of external synchronizer ring. #CMT#DESCRIPTION OF DRAWINGS : # / CMT# The drawing shows a perspective view of a flat blank. 9 : Flat blank 10 : Outer annular surface area 11 : Inner annular surface area.

Description

technical field

[0001] The invention relates to a method for producing an outer synchronizer ring. Background technique

[0002] Outer synchronizer rings provided with friction coatings or friction surfaces are usually sintered, forged or deformed from sheet metal. In a subsequent processing step, the friction surface is processed and / or a metallic, organic or carbon-containing friction coating is introduced in a materially or form-fitting manner. The introduction of metallic friction surfaces by means of galvanic or thermal methods is likewise known.

[0003] An example of a cohesive connection for a sintered friction coating and a friction surface in an outer synchronizer ring is disclosed in WO 2006 / 004343.

[0004] Bonding the friction coating foil to the frustoconical base body is a complex process. In particular, the fastening and dimensionally stable pressing of the coating roll or the layered section within the conical ring can be achieved with relatively little e...

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