JPS5770985A - Screw rotor and its manufacturing method - Google Patents

Screw rotor and its manufacturing method

Info

Publication number
JPS5770985A
JPS5770985A JP14694380A JP14694380A JPS5770985A JP S5770985 A JPS5770985 A JP S5770985A JP 14694380 A JP14694380 A JP 14694380A JP 14694380 A JP14694380 A JP 14694380A JP S5770985 A JPS5770985 A JP S5770985A
Authority
JP
Japan
Prior art keywords
lobe
shaft
rotor
boss
curved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14694380A
Other languages
Japanese (ja)
Other versions
JPS6357630B2 (en
Inventor
Hideaki Kanbara
Hidetomo Mori
Ryozo Nishina
Toshimi Sasaki
Takashi Shimaguchi
Yasuo Takahashi
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55146943A priority Critical patent/JPS6357630B2/ja
Publication of JPS5770985A publication Critical patent/JPS5770985A/en
Publication of JPS6357630B2 publication Critical patent/JPS6357630B2/ja
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082Details specially related to intermeshing engagement type pumps
    • F04C18/084Toothed wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00Rotary-piston machines or engines
    • F01C1/08Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082Details specially related to intermeshing engagement type machines or engines
    • F01C1/084Toothed wheels

Abstract

PURPOSE:To make it possible to manufacture a rotor precisely and to cool a curved face of the rotor effectively, by uniting into one body with a shaft of the rotor a cylinder-shaped lobe member made of a super-plastic material provided with a hollow inside and making a curved surface of a screw of the lobe member to be small in thickness. CONSTITUTION:As an inner face of a boss 19a of a lobe member 19 will invade notched holes 22a, 22b of a lobe shaft portion 18C through a super-plastic flow, the lobe member 19 may be united with a shaft 18 of a rotor into one body. Then, when gas within a hollow 20 of the lobe member 19 is exhausted so as to lower its temperature to the room temperature, the boss 19a and the lobe shaft portion 18c are pressed tightly to each other as heat shrinkage of the boss 19a of the lobe member 19 is greater than that of the lobe shaft portion 18c. In this case, a curved face of a screw of the lobe member 19 has been made thin, thereby it may be cooled effectively.
JP55146943A 1980-10-22 1980-10-22 Expired JPS6357630B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55146943A JPS6357630B2 (en) 1980-10-22 1980-10-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55146943A JPS6357630B2 (en) 1980-10-22 1980-10-22

Publications (2)

Publication Number Publication Date
JPS5770985A true JPS5770985A (en) 1982-05-01
JPS6357630B2 JPS6357630B2 (en) 1988-11-11

Family

ID=15419073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55146943A Expired JPS6357630B2 (en) 1980-10-22 1980-10-22

Country Status (1)

Country Link
JP (1) JPS6357630B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233816A (en) * 2005-02-23 2006-09-07 Hitachi Industrial Equipment Systems Co Ltd Manufacturing method of screw rotor
US7748970B2 (en) 2006-11-17 2010-07-06 Samsung Electronics Co., Ltd. Vacuum pump having fluid port and exhaust system
WO2019188322A1 (en) * 2018-03-30 2019-10-03 株式会社日立産機システム Screw rotor, fluid machine main body, and fluid machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466207U (en) * 1977-10-20 1979-05-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466207U (en) * 1977-10-20 1979-05-11

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233816A (en) * 2005-02-23 2006-09-07 Hitachi Industrial Equipment Systems Co Ltd Manufacturing method of screw rotor
JP4504836B2 (en) * 2005-02-23 2010-07-14 株式会社日立産機システム Screw rotor manufacturing method
US7748970B2 (en) 2006-11-17 2010-07-06 Samsung Electronics Co., Ltd. Vacuum pump having fluid port and exhaust system
WO2019188322A1 (en) * 2018-03-30 2019-10-03 株式会社日立産機システム Screw rotor, fluid machine main body, and fluid machine

Also Published As

Publication number Publication date
JPS6357630B2 (en) 1988-11-11

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