JPS57114806A - Coaxial degree evaluating method - Google Patents
Coaxial degree evaluating methodInfo
- Publication number
- JPS57114806A JPS57114806A JP49981A JP49981A JPS57114806A JP S57114806 A JPS57114806 A JP S57114806A JP 49981 A JP49981 A JP 49981A JP 49981 A JP49981 A JP 49981A JP S57114806 A JPS57114806 A JP S57114806A
- Authority
- JP
- Japan
- Prior art keywords
- coaxial degree
- line scanner
- rotated
- beams
- sample
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
PURPOSE:To realize the coaxial degree evaluation with high accuracy for microsample, by irradiating parallel beams to a cylindrical object to be measured which is rotated at a fixed position, enlarging the reflected or transmitted beams and then processing the signals which are detected by a line scanner. CONSTITUTION:The parallel beams are irradiated to the upper surface or the drilled hole of a cylindrical object to be measured which is rotated at a fixed position. The reflected or transmitted beams of the parallel beams are enlarged and received by a line scanner which is set at a prescribed position and having an array of a number of photodetectors of equal width. Then the minimum value is detected for the number of photodetectors for a period during which the output is erased or produced from the light receiving standard of the line scanner to be compared with a sample whose coaxial degree is previously known. Thus the coaxial degree is evaluated for a sample. For instance, a laser beam 18 is irradiated via a reflector 20 and from the lower part of a cylinder sample 29 which is supported and rotated by static voltage fluid bearings 1 and 2. This transmitted beam is enlarged by an optical system 22 and then received at a line scanner 23. Thus the coaxial degree is evaluated through the processes mentioned above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49981A JPS57114806A (en) | 1981-01-07 | 1981-01-07 | Coaxial degree evaluating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49981A JPS57114806A (en) | 1981-01-07 | 1981-01-07 | Coaxial degree evaluating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57114806A true JPS57114806A (en) | 1982-07-16 |
Family
ID=11475444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49981A Pending JPS57114806A (en) | 1981-01-07 | 1981-01-07 | Coaxial degree evaluating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57114806A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6194706U (en) * | 1984-11-27 | 1986-06-18 | ||
| CN110455227A (en) * | 2019-09-17 | 2019-11-15 | 中国科学院长春光学精密机械与物理研究所 | Four through axial bore coaxiality error detection method of telescope |
| CN114279328A (en) * | 2021-12-24 | 2022-04-05 | 上海羿弓精密科技有限公司 | Special measuring equipment of ultrahigh-precision RV reducer crankshaft |
-
1981
- 1981-01-07 JP JP49981A patent/JPS57114806A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6194706U (en) * | 1984-11-27 | 1986-06-18 | ||
| CN110455227A (en) * | 2019-09-17 | 2019-11-15 | 中国科学院长春光学精密机械与物理研究所 | Four through axial bore coaxiality error detection method of telescope |
| CN114279328A (en) * | 2021-12-24 | 2022-04-05 | 上海羿弓精密科技有限公司 | Special measuring equipment of ultrahigh-precision RV reducer crankshaft |
| CN114279328B (en) * | 2021-12-24 | 2022-12-27 | 上海羿弓精密科技有限公司 | Special measuring equipment of ultrahigh precision RV reduction gear bent axle |
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