JPS5770985A - Screw rotor and its manufacturing method - Google Patents
Screw rotor and its manufacturing methodInfo
- 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
- rotor
- lobe member
- boss
- shaft portion
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-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
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/082—Details specially related to intermeshing engagement type machines or engines
- F01C1/084—Toothed wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary-Type Compressors (AREA)
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14694380A JPS5770985A (en) | 1980-10-22 | 1980-10-22 | Screw rotor and its manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14694380A JPS5770985A (en) | 1980-10-22 | 1980-10-22 | Screw rotor and its manufacturing method |
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 |
---|---|---|---|
JP14694380A Granted JPS5770985A (en) | 1980-10-22 | 1980-10-22 | Screw rotor and its manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5770985A (en) |
Cited By (5)
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 |
US11536270B2 (en) | 2018-08-29 | 2022-12-27 | Hitachi Industrial Equipment Systems Co., Ltd. | Screw rotor and screw-type fluid machine main body |
WO2023084938A1 (en) * | 2021-11-09 | 2023-05-19 | 株式会社日立産機システム | Screw compressor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5466207U (en) * | 1977-10-20 | 1979-05-11 |
-
1980
- 1980-10-22 JP JP14694380A patent/JPS5770985A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5466207U (en) * | 1977-10-20 | 1979-05-11 |
Cited By (8)
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 |
JPWO2019188322A1 (en) * | 2018-03-30 | 2021-01-07 | 株式会社日立産機システム | Screw rotor, fluid machine body and fluid machine |
US11415134B2 (en) | 2018-03-30 | 2022-08-16 | Hitachi Industrial Equipment Systems Co., Ltd. | Screw rotor, fluid machine main body, and fluid machine |
US11536270B2 (en) | 2018-08-29 | 2022-12-27 | Hitachi Industrial Equipment Systems Co., Ltd. | Screw rotor and screw-type fluid machine main body |
WO2023084938A1 (en) * | 2021-11-09 | 2023-05-19 | 株式会社日立産機システム | Screw compressor |
Also Published As
Publication number | Publication date |
---|---|
JPS6357630B2 (en) | 1988-11-11 |
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