GB1057078A - Improvements in or relating to transducers for use in instruments for measuring surface roughness - Google Patents
Improvements in or relating to transducers for use in instruments for measuring surface roughnessInfo
- Publication number
- GB1057078A GB1057078A GB3715664A GB3715664A GB1057078A GB 1057078 A GB1057078 A GB 1057078A GB 3715664 A GB3715664 A GB 3715664A GB 3715664 A GB3715664 A GB 3715664A GB 1057078 A GB1057078 A GB 1057078A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stylus
- surface roughness
- sept
- carriage
- workpiece
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
1,057,078. Measuring surface roughness electrically. SIGMA INSTRUMENT CO. Ltd. Sept. 1, 1965 [Sept. 10, 1964], No. 37156/64. Heading G1N. [Also in Divisions G5 and H4] Surface roughness of a workpiece W (Fig. 1) is measured by a stylus 2 resiliently attached to a Piezo-electric crystal in a tubular housing 1 secured to a block 15 hinged at its centre of gravity 17 to a carriage 16. Fine adjustment of the C. G. is effected by movement of a counterweight 19. The stylus is biased downwards by a spring 18. Carriage 16 is suspended from a four bar link mechanism 23-26 pivoted to a fixed bar 22. The linkwork is initially held latched at 31. When released, a spring 20 causes the assembly to move the stylus across the length of the workpiece, the output voltage of the crystal being proportional to the surface level variations. A dashpot 21 ensures that the stylus moves at constant speed. The form bar link mechanism is gravitationally balanced by weights 32, 33 so that the apparatus may be used at any angle. Details of the transducer construction are given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3715664A GB1057078A (en) | 1964-09-10 | 1964-09-10 | Improvements in or relating to transducers for use in instruments for measuring surface roughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3715664A GB1057078A (en) | 1964-09-10 | 1964-09-10 | Improvements in or relating to transducers for use in instruments for measuring surface roughness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1057078A true GB1057078A (en) | 1967-02-01 |
Family
ID=10394208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3715664A Expired GB1057078A (en) | 1964-09-10 | 1964-09-10 | Improvements in or relating to transducers for use in instruments for measuring surface roughness |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1057078A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1452826A2 (en) * | 2003-02-27 | 2004-09-01 | Mitutoyo Corporation | Contact measuring instrument |
-
1964
- 1964-09-10 GB GB3715664A patent/GB1057078A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1452826A2 (en) * | 2003-02-27 | 2004-09-01 | Mitutoyo Corporation | Contact measuring instrument |
| EP1452826A3 (en) * | 2003-02-27 | 2006-06-07 | Mitutoyo Corporation | Contact measuring instrument |
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