Title:
CROSSLINKED FLUORORESIN-COATED ROTOR MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/130862
Kind Code:
A1
Abstract:
Provided is a crosslinked fluororesin-coated rotor manufacturing method by which an outer rotor of an internal gear pump is manufactured, the crosslinked fluororesin-coated rotor including: an annular outer rotor having an inner circumferential surface, which forms a plurality of internal teeth, and a side surface orthogonal to the axial direction; and an inner rotor having an outer circumferential surface, which forms a plurality of external teeth engaging with the internal teeth, and rotating about a position eccentric from the center of the outer rotor on the inner diameter side of the outer rotor, wherein the side surface of the outer rotor is coated with a crosslinked fluororesin, and the inner circumferential surface of the outer rotor is not coated with the crosslinked fluororesin. In the crosslinked fluororesin-coated rotor manufacturing method: an outer masking jig is used that covers the inner circumferential surface while the side surface of the outer rotor is exposed; a position determination engagement tooth portion for determining the circumferential position with respect to the outer rotor through engagement with the inner circumferential surface of the outer rotor is formed on the outer masking jig; the outer rotor is coated with a non-crosslinked fluororesin while the outer masking jig is mounted on the outer rotor; and then while the outer masking jig is separated from the outer rotor, the fluororesin is crosslinked by being irradiated with radiation.
Inventors:
TAKADA SHOICHI (JP)
UOZUMI MASATO (JP)
NAKABAYASHI MAKOTO (JP)
KOBAYASHI EIICHI (JP)
IKEDA KAZUAKI (JP)
UOZUMI MASATO (JP)
NAKABAYASHI MAKOTO (JP)
KOBAYASHI EIICHI (JP)
IKEDA KAZUAKI (JP)
Application Number:
PCT/JP2019/050632
Publication Date:
July 01, 2021
Filing Date:
December 24, 2019
Export Citation:
Assignee:
SUMITOMO ELECTRIC SINTERED ALLOY LTD (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
F04C2/10; F04C15/00
Foreign References:
| JP2014173513A | 2014-09-22 | |||
| JPS5659181U | 1981-05-21 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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