B - Operations – Transporting – 21 – J
Patent
B - Operations, Transporting
21
J
B21J 9/02 (2006.01) B21K 1/30 (2006.01)
Patent
CA 2098662
ABSTRACT OF THE DISCLOSURE The present invention provides a device for forging a helical gear by plastic working means. The device of the invention includes a die having a cavity formed on the center thereof for receiving a work, a punch assembly disposed above the cavity and movable in a vertical direction, a plurality of helical-tooth punches mounted on a circumference of the cavity and movable in a radial direction towards a center of the cavity, and an extrusion cam disposed above the plurality of helical-tooth punches to be movable in the vertical direction and having a bottom inner surface formed as a cam face constituting a side face of a first truncated cone having predetermined first dimensions and slope. The plurality of helical-tooth punches respectively have sliding faces which are arranged to integrally form a side face of a second truncated cone and engage with the cam face of the extrusion cam. The second truncated cone has predetermine second dimensions and slope identical with or corresponding to those of the first truncated cone, and thereby perfectly fits in the first truncated cone. When the extrusion cam goes down, the plurality of helical-tooth punches are pressed in the radial direction towards the center of the cavity to form rough profiles of helical teeth around a side wall of a work set in the cavity. The punch assembly is then pressed down to finish the helical teeth roughly formed on the side wall of the work. 14
O-Oka Forge Co. Ltd.
Riches Mckenzie & Herbert Llp
LandOfFree
Device for forging a helical gear does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for forging a helical gear, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for forging a helical gear will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1464738