Title:
PHASE MATCHING METHOD AND PHASE MATCHING DEVICE IN MACHINING OF HELICAL GROOVE
Document Type and Number:
WIPO Patent Application WO/2014/192468
Kind Code:
A1
Abstract:
After temporarily supporting a rotor raw material (8) by holding same with both a chuck (12) and a center (13), a half cylinder jig guide (16) is set concentrically on the periphery of the rotor raw material (8) so as to surround same. On the jig guide (16), a guide groove (19) of the same helical shape as the thread grooves (10) of the rotor raw material (8) is formed. Using the guide groove (19) as a guide, a helical phase matching jig (17) is inserted from above and is engaged with a thread groove (10) of the rotor raw material (8). Phase matching is performed by abutting one flank (9a) that forms a thread groove (10) against the reference surface (17a) of the phase matching jig (17). When machining a screw shaft rotor for a supercharger with a gear hobbing machine using a formed cutter, said configuration makes rapid phase-matching of the rotor raw material possible.
Inventors:
TAKAHASHI OSAMU (JP)
NAKATSUKA TAKEO (JP)
NAKATSUKA TAKEO (JP)
Application Number:
PCT/JP2014/061399
Publication Date:
December 04, 2014
Filing Date:
April 23, 2014
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
B23C3/32; B23F15/08; B23F23/00
Foreign References:
| JPH0526226U | 1993-04-06 | |||
| US20120294687A1 | 2012-11-22 | |||
| JP2006341366A | 2006-12-21 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Hiromichi Kobayashi (JP)
Hiromichi Kobayashi (JP)
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