GB828479A - Improvements in or relating to methods of and apparatus for checking the alignment of shafts and other rotatable members - Google Patents
Improvements in or relating to methods of and apparatus for checking the alignment of shafts and other rotatable membersInfo
- Publication number
- GB828479A GB828479A GB1966857A GB1966857A GB828479A GB 828479 A GB828479 A GB 828479A GB 1966857 A GB1966857 A GB 1966857A GB 1966857 A GB1966857 A GB 1966857A GB 828479 A GB828479 A GB 828479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shafts
- members
- coils
- inductances
- angular
- 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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
828,479. Measuring axial misalignment. CENTRAL ELECTRICITY GENERATING BOARD, and CULLUICK, L. G. June 20, 1958 [June 21, 1957], No. 19668/57. Class 40 (1). The alignment of two shafts is checked by attaching members to the shafts or to coupling flanges carried thereon so that they overlap one another in the axial directions of the shafts, and measuring electrically the radial spacing of the members at two or more points along their length. By carrying out the measurements at three or more (preferably eight) angular positions of the shafts the axial and/or angular displacement of the shafts relative to one another can be determined and the bearings adjusted until they are accurately aligned. In Fig. 1 the coupling flanges 14, 15 of the two shafts 12, 13 (which may be part of a turbine and alternator respectively) carry magnetic clamps 20, 21 to which are attached the measuring members 22, 27. The member 22 carries three coils 24, 25, 26 and member 27 has three corresponding cores 28, 29, 30, so that the inductances of the coils will depend on the linear separation of the two members at the three positions along their length. The inductances are measured, preferably in a bridge circuit, and the separations thus estimated. With shaft 12 in a given angular position the other shaft 13 is rotated until the inductance of coil 24 is a maximum and the values of the three inductances then noted. These measurements are repeated for other angular positions of the first shaft, e.g. 45 degrees apart, and the results plotted on polar diagrams (Figs. 4, 5, not shown). The results for coil 25 show the eccentricity at the point where the shafts are to be coupled together, and the results for the other two coils show the angular misalignment. In a modification (Fig. 3, not shown) where the coupling flanges are very close together, the two members are clamped to the peripheries of the flanges and carry only two coils, one at the point of coupling and one on the other side of one flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1966857A GB828479A (en) | 1957-06-21 | 1957-06-21 | Improvements in or relating to methods of and apparatus for checking the alignment of shafts and other rotatable members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1966857A GB828479A (en) | 1957-06-21 | 1957-06-21 | Improvements in or relating to methods of and apparatus for checking the alignment of shafts and other rotatable members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB828479A true GB828479A (en) | 1960-02-17 |
Family
ID=10133200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1966857A Expired GB828479A (en) | 1957-06-21 | 1957-06-21 | Improvements in or relating to methods of and apparatus for checking the alignment of shafts and other rotatable members |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB828479A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2337846A1 (en) * | 1975-09-02 | 1977-08-05 | Lebourg Maurice | UNDERWATER PIPELINE JUNCTION DEVICE |
| US4133113A (en) * | 1977-12-05 | 1979-01-09 | Rider Harry E | Proportioner device and method of use of same to shim motors |
| US4534114A (en) * | 1984-04-09 | 1985-08-13 | Reliance Electric Company | Coupling alignment system |
| US4553335A (en) * | 1984-07-16 | 1985-11-19 | Reliance Electric Company | Shaft alignment device |
| GB2321969A (en) * | 1997-02-05 | 1998-08-12 | Renold Plc | Rotary coupling alignment |
| CN113804111A (en) * | 2021-10-29 | 2021-12-17 | 中国工程物理研究院机械制造工艺研究所 | Variable-diameter spatial attitude measuring device and method suitable for precision assembly |
-
1957
- 1957-06-21 GB GB1966857A patent/GB828479A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2337846A1 (en) * | 1975-09-02 | 1977-08-05 | Lebourg Maurice | UNDERWATER PIPELINE JUNCTION DEVICE |
| US4133113A (en) * | 1977-12-05 | 1979-01-09 | Rider Harry E | Proportioner device and method of use of same to shim motors |
| US4534114A (en) * | 1984-04-09 | 1985-08-13 | Reliance Electric Company | Coupling alignment system |
| US4553335A (en) * | 1984-07-16 | 1985-11-19 | Reliance Electric Company | Shaft alignment device |
| GB2321969A (en) * | 1997-02-05 | 1998-08-12 | Renold Plc | Rotary coupling alignment |
| GB2321969B (en) * | 1997-02-05 | 2001-08-22 | Renold Plc | Rotary coupling alignment |
| GB2360596A (en) * | 1997-02-05 | 2001-09-26 | Renold Plc | Rotary coupling alignment using a permanent magnet and a pair of Hall effect sensors within respective coupling halves |
| GB2360596B (en) * | 1997-02-05 | 2002-01-02 | Renold Plc | Rotary coupling alignment |
| CN113804111A (en) * | 2021-10-29 | 2021-12-17 | 中国工程物理研究院机械制造工艺研究所 | Variable-diameter spatial attitude measuring device and method suitable for precision assembly |
| CN113804111B (en) * | 2021-10-29 | 2023-05-26 | 中国工程物理研究院机械制造工艺研究所 | Reducing space attitude measurement device and method suitable for precise assembly |
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