Title:
GEAR FORMING METHOD
Document Type and Number:
Japanese Patent JP3813404
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To manufacture a gear by implementing the pressing in the total processes including an asymmetrical chamfering process of a tip.
SOLUTION: An initial tooth profile 13 is formed in the circumference by blanking a base material by the pressing (A), and a coining process is implemented to form an intermediate tooth profile including a left intermediate chamfered portion 14l and a right intermediate chamfered portion 14r by pressing the initial tooth profile 13 by a symmetric upper die to symmetrically chamfer the tip in the right-to-left direction (B). Next, by achieving the shaving process in which the intermediate tooth profile is pressed by shifting the phase by θ using a press die 15 having a symmetrical blade 16 which is slightly smaller than the intermediate tooth profile, the left intermediate chamfered portion 14l and the right intermediate chamfered portion 14r are asymmetrically cut (C), and a right chamfered portion 5r and a left chamfered portion 5l and formed to be asymmetrical in the final tooth profile (D).
More Like This:
Inventors:
Koji Shibata
Hiroshi Mitsuyoshi
Hiroshi Mitsuyoshi
Application Number:
JP2000028263A
Publication Date:
August 23, 2006
Filing Date:
February 04, 2000
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
B21K1/30; B21J5/02; B21J5/06; (IPC1-7): B21K1/30; B21J5/02; B21J5/06
Domestic Patent References:
| JP11285771A | ||||
| JP8155578A | ||||
| JP6226393A |
Attorney, Agent or Firm:
Kiyomitsu Komatsu
Previous Patent: DISK RECORDING AND REPRODUCING DEVICE
Next Patent: ELECTRIC COMPONENT BOX AND CEILING EMBEDDED AIR CONDITIONER
Next Patent: ELECTRIC COMPONENT BOX AND CEILING EMBEDDED AIR CONDITIONER