초록 ▼

A blank section of a steel rod is heated and then successively impacted between hot forging dies to form a preform or rough forging ball joint socket having a tubular socket portion and a laterally projecting mounting flange portion. The rough forging is then inserted into a die set assembly includi

A blank section of a steel rod is heated and then successively impacted between hot forging dies to form a preform or rough forging ball joint socket having a tubular socket portion and a laterally projecting mounting flange portion. The rough forging is then inserted into a die set assembly including an upper die member surrounding a relatively movable punch and a lower die member surrounding a relatively movable ejector member. The upper die member is supported by a piston of a hydraulic cylinder which moves with the punch, and the upper and lower die members cooperate to produce the desired precision external configuration of the socket and flange portions. After the die members are closed, the punch cooperates with the ejector member to form the desired precision internal configuration of the tubular socket portion.

대표청구항 ▼

An improved method of efficiently producing a non-symmetrical ball joint socket having a tubular socket porion and an integral mounting flange portion projecting laterally from one side of the socket portion, comprising the steps of heating a predetermined section of metal, progressively impacting t

An improved method of efficiently producing a non-symmetrical ball joint socket having a tubular socket porion and an integral mounting flange portion projecting laterally from one side of the socket portion, comprising the steps of heating a predetermined section of metal, progressively impacting the heated metal section with hot forging dies to form a rough forging having generally a tubular socket portion and a mounting flange portion projecting from one side of the tubular socket portion, inserting the rough forging into a die set including mating die members defining a cavity corresponding to the desired external configuration of the socket and surrounding a relatively movable punch and an axially opposing forming member with predetermined outer surfaces, closing the die members to form precisely the desired external configuration of the flange portion of the socket, and thereafter moving the punch into the tubular socket of the rough forging against the opposing forming member while holding the die members closed and the forming member fixed to form the desired internal and external configuration of the tubular socket portion.