US2008105021A1PendingUtilityA1

Method of forming a gear

43
Assignee: HODJAT YAHYAPriority: Nov 7, 2006Filed: Nov 7, 2006Published: May 8, 2008
Est. expiryNov 7, 2026(~0.3 yrs left)· nominal 20-yr term from priority
Inventors:Yahya HodjatRoger LawcockJoel WrightJohn Roes
B21H 5/025B21D 53/28B21D 22/16
43
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Claims

Abstract

A method of forming a gear comprising gripping a blank to be spun formed in a spin forming machine, spin forming a gear having helical teeth disposed on an inner surface, and ejecting the gear by simultaneous extension and rotation of an ejector member and thereby rotation of the gear being ejected.

Claims

exact text as granted — not AI-modified
1 . A method of forming a gear comprising:
 gripping a blank to be spun formed in a spin forming machine;   spin forming a gear having helical teeth disposed on an inner surface; and   ejecting the gear by simultaneous extension and rotation of an ejector member and thereby rotation of the gear being ejected.   
   
   
       2 . The method as in  claim 1  further comprising trimming excess material from the gear. 
   
   
       3 . The method as in  claim 1  further comprising heat treating the gear. 
   
   
       4 . The method as in  claim 1  further comprising case hardening the gear. 
   
   
       5 . The method as in  claim 1  further comprising cutting the gear into two or more gears. 
   
   
       6 . The method as in  claim 1  further comprising spin forming a part on an outer surface of the gear.

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