CN201141760Y - Multi-core inductance sensor for detecting displacement - Google Patents
Multi-core inductance sensor for detecting displacement Download PDFInfo
- Publication number
- CN201141760Y CN201141760Y CNU200720076805XU CN200720076805U CN201141760Y CN 201141760 Y CN201141760 Y CN 201141760Y CN U200720076805X U CNU200720076805X U CN U200720076805XU CN 200720076805 U CN200720076805 U CN 200720076805U CN 201141760 Y CN201141760 Y CN 201141760Y
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- inductance
- transducer
- sensor
- magnetic
- equidistant
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Abstract
The utility model relates to a multi-core inductance transducer for measuring displacement, a wiring plate is connected above the transducer, a pair of windings is wound between a magnetic drum and a frame below the wiring plate, a clamp rod is connected below the transducer. The multi-core inductance transducer for measuring displacement is characterized in that: at the axis center of the transducer, non-magnetic metal wires are connected in series with at least two magnetic cores, the non-magnetic metal wires at the axis center line of the transducer are tightened at two heads of the worktable. The arrangement between the magnetic cores connected in series with the non-magnetic metal wires is equidistant or non- equidistant, adjustment can be made according to the specific size of the to-be-tested workpiece. The multi-core inductance transducer for measuring displacement can be widely applied in inductance length-measuring instrument, length-measuring machine and other length-measuring systems, and also inductance step gauges or inductance height gauges.
Description
Technical field
The utility model relates to a kind of inductance sensor of Displacement Measurement, is specifically related to a kind of multiple core tandem location and moves inductance sensor.
Background technology
Comprise employed inductance sensor such as dial gauge, gauging machine or altimeter, step gage etc. at present, be single cored structure, this common inductance sensor is subjected to the little influence of the range of linearity, and it is very short to measure length, can only be used to measure micro-displacement.Common axial type inductance sensor, when gauge head touches workpiece, the subtle change of workpiece size, by guide rod and extension bar, make magnetic core also produce microdisplacement, produce inductance on a pair of coil and change, voltage output is arranged on electric bridge, show the variation of displacement by instrument.But common axial type inductance sensor, the range of linearity only have ± and 300 μ m. be so can not be used for large-sized measurement.Present gauging machine is optics mostly, has a lot of error components, and can not digitizing, and it is very difficult to reach large range high precision.
The utility model content
The utility model proposes a kind of location and move the multicore inductance sensor, its purpose is to overcome existing single core inductance sensor, measurement length is short, can only be used to measure the shortcoming of micro-displacement, and the linear measure longimetry of using the utility model high-precision inductance amesdial can be used wide range is got on.(0.1 μ m) inductance amesdial that resolution is high can be used to measure tens millimeters, the hundreds of millimeter, even 1 meter～several meters.
Thinking of the present utility model is: with one group of telefault, a plurality of magnetic cores, form inductance sensor.A plurality of magnetic cores are connected in series with a nonferromagnetic material line, have so just formed " multiple core tandem electric inductance sensor ".Arrangement between the magnetic core can be equidistant, also can be not equidistant, or adjusts according to the specific dimensions of measured workpiece.The available laser interferometer of distance between the center of any two magnetic cores compares, and makes it reach the large scale high precision.Distance (as 100mm) between the center of the size of measured workpiece and two magnetic cores is when equating, demonstrate 100.0000mm on the dial gauge, if the size of measured workpiece has error, will accurately demonstrate its error on the dial gauge, as 100.00035mm, then 0.00035mm is exactly its error, and its resolution is 0.1 μ m.
A kind of location moves the multicore inductance sensor, is connected with terminal block above sensor, is wound with a pair of coil between the magnetic cylinder of terminal block below and the skeleton, and the below of sensor is connected with the clamping extension bar.It is characterized in that: the shaft core position at sensor is connected in series at least two magnetic cores with non-ferromagnetic metalloid silk, and the non-ferromagnetic metalloid silk that is positioned at sensor axle center line position is tightened in two of worktable.
Arrangement between the magnetic core can be equidistant, also can be not equidistant, can adjust according to the specific dimensions of measured workpiece.
The available laser interferometer of distance between the center of any two magnetic cores compares and makes it reach the large scale high precision.
A kind of location of the utility model design moves the multicore inductance sensor, and its advantage and good effect are: can be used for the displacement measurement of wide range, error is little, and is simple in structure, measures accurately.
The utility model can be used for length measurement systems such as inductance horizontal metroscope, gauging machine; Also can be used for inductance step gage or inductance height gauge.
Description of drawings
Fig. 1 moves multicore inductance sensor structural representation for a kind of location of the utility model;
Fig. 2 is common axial type inductance sensor structural representation;
Fig. 3 moves multicore inductance sensor and working slider annexation synoptic diagram for a kind of location.
1. terminal block, 2. coil, 3. skeleton, 4. magnetic core, 5. magnetic cylinder, 6. magnetic core two, 7. clamping extension bar, 8. magnetic core three, 9. non-ferromagnetic metalloid silk, 10. magnetic core four, 11. magnetic core extension bars, 12. guide rods, 13. screw, 14. gauge heads, 15. supports (being the working slider support among the embodiment 1), 16. bearing, 17. multiple core tandem electric inductance sensors, 18. working sliders (being motionless frame among the embodiment 1)
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
Common axial type inductance sensor as shown in Figure 2, it has only a magnetic core 4, when the gauge head 14 that is positioned at screw 13 belows touches workpiece, the subtle change of workpiece size, by guide rod 12 and magnetic core extension bar 11, make magnetic core 4 also produce microdisplacement, produce inductance on a pair of coil 2 and change, voltage output is arranged on electric bridge, show the variation of displacement by instrument.This common axial type inductance sensor, the range of linearity only have ± and 300 μ m. be so can not be used for large-sized measurement.
A kind of location moves the multicore inductance sensor, as shown in Figure 1.Above sensor, be connected with terminal block 1, be wound with coil 2 between the magnetic cylinder 5 of terminal block below and the skeleton 3, the below of sensor is connected with clamping extension bar 7, it is characterized in that: the shaft core position at sensor is serially connected with at least two magnetic cores by non-ferromagnetic metalloid silk 9, and the non-ferromagnetic metalloid silk 9 that is positioned at sensor axle center line position is tightened in two of worktable.Arrangement between the magnetic core can be equidistant, also can be not equidistant, can adjust according to the specific dimensions of measured workpiece.The utility model can be connected with microcomputer, and large-sized variation and accurate dimensions data thereof can show on display screen after handling by computer data.
Embodiment 1:
A kind of location moves the multicore inductance sensor, select for use 4 magnetic cores equidistantly to be connected in series, it is magnetic core 4, magnetic core 26, the non-ferromagnetic metalloid silk 9 of magnetic core 38 and magnetic core 4 10 usefulness equidistantly is connected in series, cell winding 2 is fixed on the bearing 16, the non-ferromagnetic metalloid silk 9 of 4 magnetic cores of serial connection is tightened on the working slider support 15 of motion, as Fig. 3, (can be camera with the measured workpiece on the working slider with alignment clamp earlier, do not draw among the figure) aiming is in the starting point of measured size, this moment, first magnetic core 4 should be in the centre position of a pair of coil, the reading that demonstrates should be zero, after working slider moves a segment distance, with the terminal point of alignment clamp (can be camera) aiming at measured size, reading on the digital display meter is if 200.0003, then this moment, magnetic core 38 was just in the centre position of coil, and 200mm is exactly the size of workpiece, 0.0003mm be exactly the error between 200 millimeters of the workpiece size of surveying and the standard sizes.
Embodiment 2:
A kind of location moves the multicore inductance sensor, select for use 4 magnetic cores equidistantly not to be connected in series, it is magnetic core 4, magnetic core 26, the non-ferromagnetic metalloid silk 9 of magnetic core 38 and magnetic core 4 10 usefulness equidistantly is not connected in series, non-ferromagnetic metalloid silk 9 is tightened on the fixing support 15, the multiple core tandem electric inductance sensor 17 of clamping on bearing 16 (in coil 2 is arranged) is fixed on the working slider 18 of motion, as Fig. 3, (can be camera with the measured workpiece on the working slider with alignment clamp earlier, do not draw among the figure) aiming is in the starting point of measured size, this moment, first magnetic core 4 should be in the centre position of a pair of coil, the reading that demonstrates should be zero, after working slider moves a segment distance, with the terminal point of alignment clamp (can be camera) aiming at measured size, reading on the digital display meter is if 200.0003, then this moment, magnetic core 38 was just in the centre position of coil, and 200mm is exactly the size of workpiece, 0.0003mm be exactly the error between 200 millimeters of the workpiece of surveying and the standard sizes.
Claims (2)
1. a location moves the multicore inductance sensor, above sensor, be connected with terminal block, be wound with a pair of coil between the magnetic cylinder of terminal block below and the skeleton, the below of sensor is connected with the clamping extension bar, it is characterized in that: the shaft core position at sensor is connected in series at least two magnetic cores with non-ferromagnetic metalloid silk, and the non-ferromagnetic metalloid silk that is positioned at sensor axle center line position is tightened in two of worktable.
2. a kind of location according to claim 1 moves the multicore inductance sensor, it is characterized in that: the arrangement between the magnetic core can be equidistant, also can be not equidistant, can adjust according to the specific dimensions of measured workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720076805XU CN201141760Y (en) | 2007-10-30 | 2007-10-30 | Multi-core inductance sensor for detecting displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720076805XU CN201141760Y (en) | 2007-10-30 | 2007-10-30 | Multi-core inductance sensor for detecting displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141760Y true CN201141760Y (en) | 2008-10-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720076805XU Expired - Fee Related CN201141760Y (en) | 2007-10-30 | 2007-10-30 | Multi-core inductance sensor for detecting displacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141760Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149247B (en) * | 2007-10-30 | 2010-06-09 | 上海第二工业大学 | Multiple core tandem electric inductance sensor |
| CN103161906A (en) * | 2011-12-19 | 2013-06-19 | 谢夫勒科技股份两合公司 | Planetary spindle drive |
-
2007
- 2007-10-30 CN CNU200720076805XU patent/CN201141760Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149247B (en) * | 2007-10-30 | 2010-06-09 | 上海第二工业大学 | Multiple core tandem electric inductance sensor |
| CN103161906A (en) * | 2011-12-19 | 2013-06-19 | 谢夫勒科技股份两合公司 | Planetary spindle drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20091130 |