Title:
高速回転体のロータの主軸接合構造
Document Type and Number:
Japanese Patent JP4404986
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a main shaft connecting structure for a rotor eliminating any part in a disc part of the rotor from generating excessive stress, eliminating no possibility of loosening of a bolt fastening the disc part to the main shaft, and being superior in reproducibility of the rotor balance in reassembling the rotor in the rotor for a high-speed rotating element such as a molecular pump. SOLUTION: A pan-like recess face 2a concentric to the axial center is provided in one face of a disc part 2 of a rotor 1, a truncated cone projection 2c is projected from the central part of the recess face 2a, the projection part 2c is fitted in a tapered hole 3a in the central part of the front end of a main shaft 3 with interference, and when the disc part 2 and the main shaft 3 are fastened together by using the bolts 4, it is so set that a narrow space part 2a is formed in the internal circumferential side of both annular abutment faces 2b.
Inventors:
Motoaki Iizuka
Mitsunori Watanabe
Mitsunori Watanabe
Application Number:
JP10617999A
Publication Date:
January 27, 2010
Filing Date:
April 14, 1999
Export Citation:
Assignee:
Osaka Vacuum Equipment Co., Ltd.
International Classes:
F04D19/04; F04D29/053; F04D29/04; F04D29/32; F04D29/64; F16B1/02
Domestic Patent References:
| JP59065592A | ||||
| JP63175317U | ||||
| JP2052997U | ||||
| JP8219086A |
Attorney, Agent or Firm:
Teruaki Koyama