CN1015404B - High sensitivity inductance type force-displacement sensor - Google Patents
High sensitivity inductance type force-displacement sensorInfo
- Publication number
- CN1015404B CN1015404B CN 90104712 CN90104712A CN1015404B CN 1015404 B CN1015404 B CN 1015404B CN 90104712 CN90104712 CN 90104712 CN 90104712 A CN90104712 A CN 90104712A CN 1015404 B CN1015404 B CN 1015404B
- Authority
- CN
- China
- Prior art keywords
- displacement sensor
- force
- plug
- inductance
- magnetic core
- 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
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Abstract
The present invention relates to a force-displacement sensor used for monitoring the working conditions of a mould, a cutter and a machine tool on an automatic production line in real time. The force-displacement sensor is characterized in that an inductance element is used as a signal extraction element. Compared with a general pressure sensitive element, the force-displacement sensor has high temperature interference resistance. Because the force-displacement sensor uses a flat loop structure and is provided with a magnetic core, the force-displacement sensor has high measurement sensitivity.
Description
The invention belongs to inductance type power-displacement transducer.
In the automated production of machine building industry, in order to guarantee crudy, monitor in real time mould, the damaged situation of cutter and the fault of lathe etc. in the processing, generally adopt sensor as signal collecting element.
The sensor that West Germany Brankamp process control automation company produces as shown in Figure 1.Formed by extension line (1), plug (2), nut (3), pin (4), pressure-active element (5), elastic overcoat (6).This sensor pack into testee (7) inner back along with testee acts on the variation of the power on the sensor, and the electric signal of pressure-active element output also changes thereupon, and this signal promptly can be used as the foundation of monitoring through after amplifying.Working condition as testee changes, and then can obtain reflection from variation of output signals.But this sensor is owing to adopt pressure-active element as the signal extraction element.The temperature stability of pressure-active element is relatively poor, so in use the interference performance of resisting temperature is just relatively poor.If will use inductance element instead as the pressure-active element of signal extraction element, then its temperature stability just better, can improve the resisting temperature interference capability, but because of its sensitivity of general inductance sensor lower, need bigger displacement just can reflect the variation of signal, can not satisfy the requirement of real-time monitoring, and the used copper cash temperature resistance coefficient of coil is bigger in the general inductance sensor, when measuring,, then also can influence measuring accuracy if any temperature variation.
The objective of the invention is to develop a kind of highly sensitive, power-displacement transducer that the resisting temperature interference performance is strong.
Formation of the present invention is to insert magnetic core in the middle of the coil of a flat pattern, form an inductance element, again this inductance element is packed into the openend of a threaded plug, the plug that has inductance element is installed on the elastic overcoat again, forms an inductance sensor.For reducing the temperature resistance coefficient of inductance element lead, lead adopts special silver-base alloy, and its composition is:
All the other are silver for manganese 8～11% aluminium 0.1～1.0%.
Ferrite core of nickel-zinc is inserted in sensitivity when measuring for improving inductance element in coil, the composition of this magnetic core is:
All the other are di-iron trioxide for nickel 1～2% zinc paste 5～7% rare earths 0.01～0.09%, are made by powder metallurgy.
Illustrate that accompanying drawing is as follows:
Fig. 1 is the sensor figure of West Germany K.Brankamp company.
Fig. 2 is sensor unit figure of the present invention.
Fig. 3 is the telefault figure of sensor of the present invention.
Fig. 4 is the magnetic core figure of sensor of the present invention.
Fig. 5 is the plug figure of sensor of the present invention.
Fig. 6 is the elastic overcoat figure of sensor of the present invention.
Accompanying drawings embodiment is as follows:
Sensor of the present invention (seeing accompanying drawing 2) is made up of extension line (8), plug (9), elastic overcoat (10), nut (11), pin (12), telefault (13), magnetic core (14).Telefault (13) is a pancake coil (seeing accompanying drawing 3), one end of plug (9) (seeing accompanying drawing 5) has screw thread, the other end is the cone-shaped body of an opening, and an end of elastic overcoat (seeing accompanying drawing 6) has a flexible opening fork, and the other end is the mesopore cylinder of band boss.An inductance element will be formed, in the opening cone-shaped body of the plug (9) of again this inductance element being packed in the middle of magnetic core (14) (accompanying drawing 4) the insertion coil (13).The plug thread end that will have inductance element then seals in the hole of elastic overcoat (10), because of the thread end of plug (9) has a groove (15), pin (12) can enter in the groove (15) by hole (16), so when rotation nut (11), plug (9) is promptly to nut direction tension, contacts with elastic overcoat (10) fork-shaped opening until the tapering point of plug (9).Promptly form inductance sensor.
During measurement, on measured object, open one with elastic overcoat (10) fork-shaped openend directly through identical hole, sensor of the present invention is inserted in the hole, rotation nut (11), owing to plug (9) opens elastic overcoat fork-shaped opening part to the tension of nut direction, thereby make sensor tightly contact the hole wall of testee, when testee is applied to power on the elastic overcoat (10) and changes, the fork-shaped opening of elastic overcoat (9) promptly produces displacement, thereby record by inductance element, and output signal, this signal can be as monitor signal after amplifying.
Sensor of the present invention is owing to adopt the flat pattern coil and add magnetic core, so measure highly sensitive, owing to adopted the lead of silver-colored manganese alloy,, can satisfy the requirement of the real-time monitoring on the machine-building automatic assembly line again so the resisting temperature interference performance is strong as telefault.
Claims (1)
1, a kind of by extension line (8), plug (9), elastic overcoat (10), nut (11), pin (12), telefault (13), inductance type power-displacement transducer that magnetic core (14) is formed, it is characterized in that inductance element is to insert a magnetic core (14) in the coil at flat pattern (13), pack into the again openend of plug (9) of this inductance element, the plug (9) that has inductance element refills on elastic overcoat (10), form inductance type power-displacement transducer, the lead of said coil is silver-colored manganese alloy, its composition is: manganese 8～11% aluminium 0.1～1.0% all the other compositions are silver, said magnetic core is a nickel-zinc ferrite, and its composition is: be di-iron trioxide surplus nickel 1～2% zinc paste 5～7% rare earths 0.01～0.09%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104712 CN1015404B (en) | 1990-07-24 | 1990-07-24 | High sensitivity inductance type force-displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104712 CN1015404B (en) | 1990-07-24 | 1990-07-24 | High sensitivity inductance type force-displacement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047996A CN1047996A (en) | 1990-12-26 |
| CN1015404B true CN1015404B (en) | 1992-02-05 |
Family
ID=4878696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90104712 Expired CN1015404B (en) | 1990-07-24 | 1990-07-24 | High sensitivity inductance type force-displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015404B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3091406B1 (en) * | 2015-05-08 | 2017-12-20 | Sandvik Intellectual Property AB | A method of determining pull-out of a cutting tool and a rotatable tool holder for a cutting tool |
| CN105445425B (en) * | 2015-11-27 | 2017-12-05 | 中国电子科技集团公司第四十八研究所 | Single hydrogen sensor of oil-filled transformer |
-
1990
- 1990-07-24 CN CN 90104712 patent/CN1015404B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1047996A (en) | 1990-12-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |