METHOD OF MANUFACTURING VARIATOR PART FOR CONTINUOUSLY VARIABLE TRANSMISSION AND VARIATOR PART FOR CONTINUOUSLY VARIABLE TRANSMISSION

Title:

METHOD OF MANUFACTURING VARIATOR PART FOR CONTINUOUSLY VARIABLE TRANSMISSION AND VARIATOR PART FOR CONTINUOUSLY VARIABLE TRANSMISSION

Document Type and Number:

Japanese Patent JP2005061494

Kind Code:

A

Abstract:

To reduce a machining cost while keeping concentrical accuracy of cylindrical parts and ball spline groove parts of an inner-diameter part and a functional face, and to machine the functional face without damaging the ball spline groove parts.

This manufacturing method of the variator part 15a of the continuously variable transmission wherein cylindrical parts 52 and the ball spline groove parts 51 are alternately formed in the inner-diameter part 50, includes a process for simultaneously finishing the cylindrical parts 52 and the ball spline groove parts 51 by using a hard broach tool 60, and a process for finishing the functional face 18 formed on a side face of the variator part 15a while applying the cylindrical parts 52 as machining standard.

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Inventors:

HIRATA KIYOTAKA
IKEDA HIROYUKI

Application Number:

JP2003291257A

Publication Date:

March 10, 2005

Filing Date:

August 11, 2003

Export Citation:

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Assignee:

NSK LTD

International Classes:

B23D37/00; B23P13/02; F16H9/12; F16H15/38; F16H55/34; F16H55/36; (IPC1-7): F16H15/38; B23D37/00; F16H9/12; F16H55/34; F16H55/36

Attorney, Agent or Firm:

Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada

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