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Title:
FORM ROLLING METHOD OF HELICAL GEAR
Document Type and Number:
Japanese Patent JP2013184172
Kind Code:
A
Abstract:

To provide a form rolling method capable of sufficiently improving accuracy of a tooth trace, and executing the form rolling of a helical gear without machining any unnecessary portion.

A form rolling method includes: a first form rolling step of rolling a workpiece W for form rolling in a first engagement state in which a first surface to be worked of the workpiece W for form rolling is engaged with a four-tooth engagement area, and a second surface to be worked thereof is engaged with a five-tooth engagement area; a second form rolling step of rolling the workpiece W for form rolling in a second engagement state in which the second surface to be worked is engaged with the four-tooth engagement area, and the first surface to be worked is engaged with the five-tooth engagement area; and an engagement state changing step of changing the engagement state of a forming tooth with a working tooth into the first engagement state or the second engagement state by generating a relative slip in the engagement surface between the forming tooth and the working tooth formed on the first and second surfaces to be worked, and relatively turning the workpiece W for form rolling to roller dies 4a, 4b for form rolling by the relative slip.


Inventors:
TACHIKAWA TOMOKAZU
Application Number:
JP2012049137A
Publication Date:
September 19, 2013
Filing Date:
March 06, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
AISIN SEIKI
International Classes:
B21H5/00
Domestic Patent References:
JP2008238215A2008-10-09
JPS63248532A1988-10-14
JPH03285730A1991-12-16
JPS61140343A1986-06-27
Foreign References:
WO2004110669A12004-12-23
Attorney, Agent or Firm:
Patent business corporation Prospec patent office
Kenai Kanai



 
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