JPH0356896U - - Google Patents
Info
- Publication number
- JPH0356896U JPH0356896U JP11641389U JP11641389U JPH0356896U JP H0356896 U JPH0356896 U JP H0356896U JP 11641389 U JP11641389 U JP 11641389U JP 11641389 U JP11641389 U JP 11641389U JP H0356896 U JPH0356896 U JP H0356896U
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- positioning
- mounting structure
- stepped portion
- main shaft
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
Landscapes
- Non-Positive Displacement Air Blowers (AREA)
Description
第１図は本考案に係る羽根車取付構造を示す部
分断面図、第２図はその羽根車取付構造の作用を
説明するための図、第３図はロータ主軸の形状を
示す図、第４図Ａ，Ｂはそれぞれ従来の羽根車取
付構造における１次曲げ固有値の測定結果を示す
図、第５図Ａ，Ｂはそれぞれ本考案の羽根車取付
構造における１次曲げ固有値の測定結果を示す図
、第６図は磁気軸受を用いたターボ分子ポンプの
構造を示す図である。
図中、１……ロータ主軸、２……羽根車、３…
…位置決用段付部、２０……細溝、２１……押圧
部材、２２……ボルト、２３……焼嵌め維持部、
２４……焼嵌め解放部。
Fig. 1 is a partial sectional view showing the impeller mounting structure according to the present invention, Fig. 2 is a drawing for explaining the function of the impeller mounting structure, Fig. 3 is a drawing showing the shape of the rotor main shaft, and Fig. 4 is a diagram showing the shape of the rotor main shaft. Figures A and B are diagrams showing the measurement results of the primary bending eigenvalues in the conventional impeller mounting structure, respectively, and Figures 5A and B are diagrams showing the measurement results of the primary bending eigenvalues in the impeller mounting structure of the present invention, respectively. , FIG. 6 is a diagram showing the structure of a turbomolecular pump using magnetic bearings. In the figure, 1... rotor main shaft, 2... impeller, 3...
... Positioning step part, 20 ... Thin groove, 21 ... Pressing member, 22 ... Bolt, 23 ... Shrink fit maintenance part,
24... Shrink-fit release part.
Claims (1)
持つロータ主軸に羽根車を焼嵌めで固着する回転
ロータの羽根車取付構造において、 前記位置決用段付部の周囲で且つ該羽根車の取
付位置近傍に、細溝を設けたことを特徴とする羽
根車取付構造。[Scope of Claim for Utility Model Registration] In an impeller mounting structure for a rotating rotor in which an impeller is fixed to a rotor main shaft by shrink fitting, the impeller has a positioning stepped portion for positioning the impeller, the positioning stepped portion for positioning the impeller. An impeller mounting structure characterized in that a narrow groove is provided around the impeller and near the mounting position of the impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989116413U JPH0749040Y2 (en) | 1989-10-03 | 1989-10-03 | Impeller mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989116413U JPH0749040Y2 (en) | 1989-10-03 | 1989-10-03 | Impeller mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0356896U true JPH0356896U (en) | 1991-05-31 |
| JPH0749040Y2 JPH0749040Y2 (en) | 1995-11-13 |
Family
ID=31664691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989116413U Expired - Lifetime JPH0749040Y2 (en) | 1989-10-03 | 1989-10-03 | Impeller mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749040Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012172990A1 (en) * | 2011-06-16 | 2012-12-20 | エドワーズ株式会社 | Rotor and vacuum pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63101521A (en) * | 1986-10-15 | 1988-05-06 | Mitsubishi Heavy Ind Ltd | Bolt fastening structure between disc-shaped body and shaft of rotary body |
-
1989
- 1989-10-03 JP JP1989116413U patent/JPH0749040Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63101521A (en) * | 1986-10-15 | 1988-05-06 | Mitsubishi Heavy Ind Ltd | Bolt fastening structure between disc-shaped body and shaft of rotary body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012172990A1 (en) * | 2011-06-16 | 2012-12-20 | エドワーズ株式会社 | Rotor and vacuum pump |
| JPWO2012172990A1 (en) * | 2011-06-16 | 2015-02-23 | エドワーズ株式会社 | Rotor and vacuum pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0749040Y2 (en) | 1995-11-13 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |