Cold extrusion process for internal helical gear teeth

Details Cold extrusion process for internal helical gear teeth Cold extrusion process for internal helical gear teeth

1988-08-15

1989-11-07

Spruill, Robert L.

Metal deforming

By extruding through orifice

Utilizing internal forming means

722531, 72260, B21C 2506

Patent

active

048783706

ABSTRACT:
A cold extrusion process for forming internal ring gears comprising the formation of an annular ring gear blank having precise inside and outside diameters, placing the workpiece over a circular mandrel having external gear forming die teeth and a pilot portion adapted to receive the blank, placing a die ring around the mandrel and the assembled workpiece, a circular punch arranged coaxially with respect to the mandrel and the workpiece, moving the punch into the annular space occupied by the workpiece between the die ring and the mandrel, advancing the punch by means of a press whereby the workpiece is cold formed through the external teeth of the mandrel, moving the die ring in synchronism with the downward motion of the workpiece through the die teeth thereby eliminating any frictional forces in the direction of motion of the die during the extrusion process, and retracting the die ring following the extrusion of the workpiece thereby permitting automated ejection of the workpiece.

REFERENCES:
patent: 3566651 (1971-03-01), Tlaker
patent: 3910091 (1975-10-01), Samanta
patent: 4287749 (1981-09-01), Bachrach et al.
patent: 4350865 (1982-09-01), Bachrach
patent: 4509353 (1985-04-01), Ike et al.
patent: 4546635 (1985-10-01), Arita et al.
patent: 4622842 (1986-11-01), Bachrach et al.

Affiliated with

Also associated with

Rating

Cold extrusion process for internal helical gear teeth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cold extrusion process for internal helical gear teeth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cold extrusion process for internal helical gear teeth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-77118