Metal tools and implements – making – Blank or process – Die
Patent
1985-04-29
1986-04-08
Parker, Roscoe V.
Metal tools and implements, making
Blank or process
Die
219 69M, 83 19, 83176, 408 19, B23P 1524, B21C 2508
Patent
active
045804672
ABSTRACT:
An extrusion die for extruding helical gears or the like is formed with an extrusion passage having a predetermined draft by initially forming a blank with a central bore and frusto conical outer side surface coaxial with the bore. The formed blank is then forcibly pressed into a frusto conical bore in a die case. The frusto conical bore in the die case is tapered at an angle less than that of the outer surface of the die blank, thus when seated in the bore, radial compressive forces are applied to the blank which progressively increase in magnitude from the small diameter end of the blank to its large diameter end. While so compressed, helical gear teeth are cut into the wall of the central bore of the blank. Upon removal from the case, the blank metal expands radially to provide the machined central passage with the desired draft.
REFERENCES:
patent: 3768344 (1973-10-01), Feldcamp
patent: 4287749 (1981-09-01), Bachrach et al.
LandOfFree
Method of making extrusion die for extruding gears does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of making extrusion die for extruding gears, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making extrusion die for extruding gears will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2059563