JPH0258588B2 - - Google Patents
Info
- Publication number
- JPH0258588B2 JPH0258588B2 JP10623484A JP10623484A JPH0258588B2 JP H0258588 B2 JPH0258588 B2 JP H0258588B2 JP 10623484 A JP10623484 A JP 10623484A JP 10623484 A JP10623484 A JP 10623484A JP H0258588 B2 JPH0258588 B2 JP H0258588B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- image signal
- autocorrelation
- thread
- chatter
- 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.)
- Expired
Links
- 238000007689 inspection Methods 0.000 claims description 30
- 230000007547 defect Effects 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000000737 periodic effect Effects 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 31
- 239000010959 steel Substances 0.000 description 31
- 238000005520 cutting process Methods 0.000 description 24
- 239000011295 pitch Substances 0.000 description 7
- 238000011179 visual inspection Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005311 autocorrelation function Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10623484A JPS60250235A (ja) | 1984-05-25 | 1984-05-25 | ねじ表面の検査方法及び検査装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10623484A JPS60250235A (ja) | 1984-05-25 | 1984-05-25 | ねじ表面の検査方法及び検査装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60250235A JPS60250235A (ja) | 1985-12-10 |
| JPH0258588B2 true JPH0258588B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1990-12-10 |
Family
ID=14428429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10623484A Granted JPS60250235A (ja) | 1984-05-25 | 1984-05-25 | ねじ表面の検査方法及び検査装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60250235A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62279931A (ja) * | 1986-05-29 | 1987-12-04 | レンゴ−株式会社 | 片面段ボ−ルの不良検出装置 |
| US7382935B2 (en) | 2003-11-07 | 2008-06-03 | Avago Technologies Ecbu Ip Pte Ltd | Homogeneous and plain surface detection in optical navigation systems |
| DE102007017747B4 (de) * | 2007-04-12 | 2009-05-07 | V & M Deutschland Gmbh | Verfahren und Vorrichtung zur optischen Vermessung von Außengewinden |
| JP5036644B2 (ja) * | 2008-07-03 | 2012-09-26 | 住友重機械工業株式会社 | 表面検査方法、及びびびりマーク検査装置 |
| BR112012018564B1 (pt) * | 2010-01-29 | 2019-07-02 | Nippon Steel & Sumitomo Metal Corporation | Aparelho de inspeção de defeitos |
| JP7146092B2 (ja) * | 2019-07-25 | 2022-10-03 | 三菱電機株式会社 | 検査装置及び方法、並びにプログラム及び記録媒体 |
-
1984
- 1984-05-25 JP JP10623484A patent/JPS60250235A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60250235A (ja) | 1985-12-10 |
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