CN112284200B - Micrometer gauge - Google Patents
Micrometer gauge Download PDFInfo
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- CN112284200B CN112284200B CN202011409218.4A CN202011409218A CN112284200B CN 112284200 B CN112284200 B CN 112284200B CN 202011409218 A CN202011409218 A CN 202011409218A CN 112284200 B CN112284200 B CN 112284200B
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- measurement
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- 238000005259 measurement Methods 0.000 claims abstract description 116
- 238000006073 displacement reaction Methods 0.000 claims abstract description 45
- 230000006698 induction Effects 0.000 claims 1
- 230000005693 optoelectronics Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/18—Micrometers
-
- 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
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The application discloses a micrometer which comprises a micrometer frame, a measuring rod, a force measuring input part, a linear displacement sensor and a control part, wherein a force measuring sensor is connected between the measuring rod and the force measuring input part and used for sensing force measurement and converting the force measurement into a force measuring electric signal. The force transducer comprises an elastic part and is used for measuring force deformation; the signal part is used for outputting the force measurement electric signal; the main trigger part and the auxiliary trigger part are connected with two ends of the elastic part and are used for generating the force measurement electric signals, one of the force measurement electric signals is connected with the measuring rod, and the other one of the force measurement electric signals is connected with the force measurement input part; the signal part is connected with one of the main triggering part and the auxiliary triggering part and is electrically connected with the control part.
Description
Technical Field
The application belongs to the field of distance measurement, and relates to a micrometer with a force transducer.
Background
In order to improve the measurement accuracy, constant force measurement is needed when the micrometer measures the distance, and the device for realizing constant force measurement comprises a ratchet wheel and a double-spring constant force device. The rotation force difference generated by each tooth of the ratchet device is amplified by the screw rod, so that the force measurement fluctuation is large, and the repetition precision and the measurement precision are damaged; the technical proposal disclosed in the publication No. CN103528454A adopts a double-spring constant force device, which has large volume, large spring deformation and easy fatigue; in addition, the digital display micrometer continuously measures all the time in the ranging process, so that the real and effective measurement is instantaneous, and most of electric energy is wasted.
Disclosure of Invention
In order to solve the problems, the application discloses a micrometer, which comprises a micrometer frame, a measuring rod, a force measuring input part, a linear displacement sensor and a control part, wherein the force measuring input part is used for driving the measuring rod to reciprocate along an axis; the linear displacement sensor is used for sensing the relative displacement of the ruler frame and the measuring rod; the control part is used for driving and controlling the linear displacement sensor to measure distance and calculating distance measurement data; and a force measuring sensor is connected between the measuring rod and the force measuring input part and is used for sensing force measurement and converting the force measurement into a force measuring electric signal.
Preferably, in the micrometer, the force sensor includes an elastic portion for measuring force deformation; the signal part is used for outputting the force measurement electric signal; the main trigger part and the auxiliary trigger part are connected with two ends of the elastic part and are used for generating the force measurement electric signals, one of the force measurement electric signals is connected with the measuring rod, and the other one of the force measurement electric signals is connected with the force measurement input part; the signal part is connected with one of the main triggering part and the auxiliary triggering part and is electrically connected with the control part; the force measurement is applied to the force measurement input part along the distance measurement direction, the force is transmitted to the measuring rod through the force measurement sensor, when the reactive force of the measured object is resisted by the measuring rod to reach the fixed force measurement, the force measurement sensor generates a fixed force measurement electric signal, and the fixed force measurement electric signal is transmitted to the control part through the signal part.
Preferably, in the micrometer, the main trigger part includes a fixed-force main trigger end; the auxiliary trigger part comprises a fixed force measurement auxiliary trigger end; the fixed force main trigger end and the fixed force auxiliary trigger end are configured into a fixed force trigger pair, and the fixed force trigger pair is used for measuring the deformation quantity of the elastic part when the force reaches the fixed force, so that the fixed force electric signal is generated by the fixed force trigger pair.
Preferably, in the micrometer, the main trigger part further includes a primary force measurement main trigger end; the auxiliary trigger part also comprises a primary force measurement auxiliary trigger end; the primary force main trigger end and the primary force auxiliary trigger end are configured into a primary force trigger pair, and are used for measuring force to reach the primary force, the deformation of the elastic part occurs, so that the primary force trigger pair generates a primary force electric signal, and the primary force is smaller than the fixed force.
Preferably, in the micrometer, the fixed force trigger pair and the initial force trigger pair are one or a combination of a mechanical switch, a photoelectric switch and an inductive switch.
Preferably, in the micrometer, the main trigger portion is provided with a fixed force measurement adjusting bolt, which is used for adjusting the fixed force, one end of the fixed force measurement adjusting bolt is in screwed connection or hinged connection with the main trigger portion, the other end of the fixed force measurement adjusting bolt is hinged or screwed connection with the fixed force measurement main trigger end, and the fixed force measurement main trigger end can be far away from or close to the fixed force measurement auxiliary trigger end along the trigger direction by rotating the fixed force measurement adjusting bolt.
Preferably, in the micrometer, the auxiliary trigger portion is provided with a fixed force measurement adjusting bolt, which is used for adjusting the fixed force, one end of the auxiliary trigger portion is in threaded connection or hinged connection with the auxiliary trigger portion, the other end of the auxiliary trigger portion is in hinged connection or in threaded connection with the auxiliary trigger end of the fixed force measurement, and the auxiliary trigger end of the fixed force measurement can be far away from or close to the main trigger end of the fixed force measurement along the trigger direction by rotating the fixed force measurement adjusting bolt.
Preferably, in the micrometer, one of the main trigger portion and the auxiliary trigger portion is provided with a piezoelectric sensor, and the piezoelectric sensor is electrically connected with the signal portion, one surface of the piezoelectric sensor is adhered to the end face of the measuring rod or the end face of the measuring input portion, and is used for sensing and converting the measured force into the measured force electric signal, and the measured force electric signal is sent to the control portion through the signal portion.
Preferably, in the micrometer, the elastic portion is a spring or a shrapnel.
Preferably, in the micrometer, the measuring rod is a straight-forward measuring rod.
Preferably, in the micrometer, the linear displacement sensor is one of an image displacement sensor, a grating displacement sensor, a magnetic grid displacement sensor and a capacitive grid displacement sensor.
Advantageous effects
The force measuring sensor has the advantages of simple manufacture, low cost, small volume, small deformation of the elastic part, fatigue resistance and high force measuring precision, and improves the repetition precision and the measuring precision of the micrometer; before the initial force measurement is triggered, the micrometer is in a power saving mode, and when the distance is measured, the distance is measured from the initial force measurement to the fixed force measurement only in millisecond time, so that the electric energy is saved.
Drawings
The drawings are schematic structural diagrams, which are only used for illustrating the principle and not limiting the scope of the claims of the application;
FIG. 1 is a schematic diagram of a micrometer;
FIG. 2 is a schematic diagram of a load cell with an adjusting bolt disposed in a primary trigger portion;
FIG. 3 is a schematic diagram of a load cell with an adjusting bolt disposed in an auxiliary trigger;
FIG. 4 is a schematic diagram of a force cell sensor with one face of the piezoelectric sensor bonded to the end face of the stylus;
Fig. 5 is a schematic structural diagram of a force sensor having one face of the piezoelectric sensor bonded to an end face of the force measuring input portion.
Description of the preferred embodiments 1
To illustrate specific embodiments, reference is made to the accompanying drawings.
A micrometer, as shown in fig. 1, comprises a micrometer frame 1, a measuring rod 2, a force measuring input part 4, a linear displacement sensor 5 and a control part 6, wherein the force measuring input part 4 is used for driving the measuring rod 2 to reciprocate along an axis; the linear displacement sensor 5 includes a sensing portion 51 and a sensed portion 52, the sensing portion 51 being provided at a proper position of the scale 1, the sensed portion 52 being provided at a proper position of the measuring staff 2, which are configured to sense relative displacement of the scale 1 and the measuring staff 2; the control section 6 is for driving and controlling the linear displacement sensor 5 to measure distance and calculate distance measurement data.
A load cell 3 is connected between the measuring bar 2 and the load cell input 4 for sensing the load and converting the load into a load electrical signal, the load cell 3 being electrically connected to the control 6.
The force sensor 3 comprises an elastic part 31, a signal part 32, a main trigger part 33 and an auxiliary trigger part 34, wherein the elastic part 31 is used for measuring force deformation, two ends of the elastic part are respectively connected with one end of the main trigger part 33 and one end of the auxiliary trigger part 34, the other end of one of the main trigger part 33 and the auxiliary trigger part 34 is connected with the measuring rod 2, and the other end of the other one is connected with the force measuring input part 4; the signal unit 32 is connected to one of the main trigger unit 33 and the auxiliary trigger unit 34, and is electrically connected to the control unit 6.
The main trigger part 33 and the auxiliary trigger part 34 are used for generating the force measuring electric signal, and the force measuring electric signal is one or a combination of two of a switch signal, a level trigger signal, a rising edge trigger signal, a falling edge trigger signal, a digital signal and an analog signal.
The force measurement is applied to the force measurement input part 4, and is transmitted to the measuring rod 2 through the force measurement sensor 3, when the reacting force of the measured object against the measuring rod 2 reaches the fixed force measurement, the force measurement sensor generates a fixed force measurement electric signal, the fixed force measurement electric signal is sent to the control part 6 through the signal part 32, the control part 6 stops driving the linear displacement sensor 5 to measure the distance, and distance measurement data are calculated.
As shown in fig. 2 and 3, the main trigger portion 33 includes a primary force measurement main trigger end 331 and a fixed force measurement main trigger end 332, and the auxiliary trigger portion 34 includes a primary force measurement auxiliary trigger end 341 and a fixed force measurement auxiliary trigger end 342; the primary force-measuring main trigger end 331 and the primary force-measuring auxiliary trigger end 341 are configured as a primary force-measuring trigger pair, and initial positions of the two trigger ends are determined by an elastic coefficient of the elastic portion 31 and a primary force; the fixed force main trigger 332 and the fixed force auxiliary trigger 342 are configured as a fixed force trigger pair, and initial positions of the two trigger ends are determined by the elastic coefficient of the elastic portion 31 and the fixed force.
During ranging, in order that the initial force-measuring trigger pair is triggered before, the fixed force-measuring trigger pair is triggered after, that is, the initial force-measuring is smaller than the fixed force-measuring force, that is, along the trigger direction, the initial position distance between the initial force-measuring main trigger end 331 and the initial force-measuring auxiliary trigger end 341 is smaller than the initial position distance between the fixed force-measuring main trigger end 332 and the fixed force-measuring auxiliary trigger end 342, the smaller the difference is, the more power is saved, and the difference is about 1 mm.
The fixed force is between 5N and 10N; the initial force is 1N to 4N less than the measured force.
In a non-ranging state, the micrometer is in a power saving mode; when the distance is measured, the force is applied to the force measuring input part 4 and is transmitted to the measuring rod 2 through the force measuring sensor 3, when the reacting force of the measured object is resisted by the measuring rod 2 and reaches the initial measuring force, the deformation quantity of the elastic part 31 causes the initial measuring force trigger pair to generate an initial measuring force electric signal, and the control part 6 starts the continuous distance measuring mode of the linear displacement sensor 5 after receiving the initial measuring force electric signal; when the force measurement is continuously increased to the fixed force measurement, the fixed force measurement trigger pair generates a fixed force measurement electric signal, and after the control part 6 receives the fixed force measurement electric signal, the linear displacement sensor 5 stops ranging, and the ranging data is calculated to obtain final distance data.
The elastic part 31 is one of a tension spring, a compression spring, a torsion spring and a spring piece; the linear displacement sensor 5 is one of an image displacement sensor, a grating displacement sensor, a magnetic grating displacement sensor and a capacitive grating displacement sensor.
Regarding the accuracy of the measured force, for example, assuming that the elastic coefficient k=1n/mm of the elastic portion 31 and the driving speed of the force measuring input portion 4 are 20mm/s, the time for the linear displacement sensor 5 to measure the force once is 50us, after the electric signal of the measured force occurs, the maximum difference F between the measured force of the last ten times of distance measurement, that is, the interval time t=50us×10=500 us between the last time of distance measurement and the previous tenth time of distance measurement is calculated, and the deformation d=20mm/s×500us=0.01 mm of the elastic portion 31 occurs during this time, f=dk=0.01 mm×1n/mm=0.01N, so it can be seen that the measured force is almost the same in the last ten times of distance measurement, and the accuracy of the measured force is greatly improved.
In order to set the fixed measurement force more precisely, a fixed measurement force adjusting bolt 35 is provided on the main trigger portion 33 for adjusting the fixed measurement force, as shown in fig. 2, one end of the fixed measurement force adjusting bolt 35 is in threaded connection or hinged connection with the main trigger portion 33, and the other end is in hinged connection or screwed connection with the fixed measurement force main trigger end 332; or the auxiliary trigger portion 34 is provided with a fixed force adjusting bolt 35, as shown in fig. 3, one end of the fixed force adjusting bolt 35 is in screwed connection or hinged connection with the auxiliary trigger portion 34, and the other end is in hinged connection or screwed connection with the fixed force auxiliary trigger end 342.
The fixed force adjusting bolt 35 is rotated, so that the initial position distance between the fixed force main trigger end 332 and the fixed force auxiliary trigger end 342 is increased or decreased along the trigger direction, and the fixed force is adjusted.
The initial force measurement trigger pair and the fixed force measurement trigger pair are one or the combination of two of a mechanical switch, a photoelectric switch and an inductive switch.
The measuring rod 2 is a straight-in measuring rod.
There are two ways of manipulating the micrometer, one by driving the force-measuring input 4 by a screw and one by driving the force-measuring input 4 by a straight line, the latter measuring more efficiently.
Description of the preferred embodiment 2
To illustrate specific embodiments, reference is made to the accompanying drawings.
A micrometer, as shown in fig. 1, comprises a micrometer frame 1, a measuring rod 2, a force measuring input part 4, a linear displacement sensor 5 and a control part 6, wherein the force measuring input part 4 is used for driving the measuring rod 2 to reciprocate along an axis; the linear displacement sensor 5 includes a sensing portion 51 and a sensed portion 52, the sensing portion 51 being provided at a proper position of the scale 1, the sensed portion 52 being provided at a proper position of the measuring staff 2, which are configured to sense relative displacement of the scale 1 and the measuring staff 2; the control section 6 is for driving and controlling the linear displacement sensor 5 to measure distance and calculate distance measurement data.
A load cell 3 is connected between the measuring bar 2 and the load cell input 4 for sensing the load and converting the load into a load electrical signal, the load cell 3 being electrically connected to the control 6.
The force sensor 3 comprises an elastic part 31, a signal part 32, a main trigger part 33 and an auxiliary trigger part 34, wherein the elastic part 31 is used for measuring force deformation, two ends of the elastic part are respectively connected with one end of the main trigger part 33 and one end of the auxiliary trigger part 34, the other end of one of the main trigger part 33 and the auxiliary trigger part 34 is connected with the measuring rod 2, and the other end of the other one is connected with the force measuring input part 4; the signal unit 32 is connected to one of the main trigger unit 33 and the auxiliary trigger unit 34, and is electrically connected to the control unit 6.
One of the main trigger part 33 and the auxiliary trigger part 34 is provided with a piezoelectric sensor 36, as shown in fig. 4 and 5, the piezoelectric sensor 36 is cylindrical, one end surface of the piezoelectric sensor 36 is adhered to one end surface of the measuring rod 2 and one end surface of the measuring force input part 4, and is used for sensing the measuring force and converting the measuring force into the measuring force electric signal, the measuring force electric signal is one of a digital signal and an analog signal, the digital signal and the analog signal is sent to the control part 6 through the signal part 32, and the control part 6 decodes or converts the measuring force electric signal into measuring force data.
The force measurement is applied to the force measurement input part 4, and is transmitted to the measuring rod 2 through the force measurement sensor 3, when the reacting force of the measured object against the measuring rod 2 reaches the fixed force measurement, the force measurement sensor generates a fixed force measurement electric signal, the fixed force measurement electric signal is sent to the control part 6 through the signal part 32, the control part 6 stops driving the linear displacement sensor 5 to measure the distance, and distance measurement data are calculated.
When the distance measurement is performed, force measurement is applied to the force measurement input part 4 and is transmitted to the measuring rod 2 through the force measurement sensor 3, when the reacting force of the measured object, which is resisted by the measuring rod 2, reaches the initial force measurement, the corresponding initial force measurement electric signal is generated by the piezoelectric sensor 36, the corresponding initial force measurement electric signal is decoded or converted into force measurement data through the control part 6, and if the force measurement data reach the initial force measurement, the control part 6 starts the linear displacement sensor 5 to perform a continuous distance measurement mode; when the force measurement continues to be increased to the fixed force, the piezoelectric sensor 36 generates a corresponding fixed force electrical signal, the fixed force electrical signal is decoded or converted into fixed force data by the control part 6, and if the fixed force data reaches the fixed force, the control part 6 stops the distance measurement of the linear displacement sensor 5, calculates distance measurement data, and obtains final distance data.
The fixed force is between 5N and 10N; the initial force is 1N to 4N less than the measured force.
The elastic part 31 is one of a tension spring, a compression spring, a torsion spring and a spring piece; the linear displacement sensor 5 is one of an image displacement sensor, a grating displacement sensor, a magnetic grating displacement sensor and a capacitive grating displacement sensor.
Regarding the accuracy of the measured force, for example, assuming that the elastic coefficient k=1n/mm of the elastic portion 31 and the driving speed of the force measuring input portion 4 are 20mm/s, the time for the linear displacement sensor 5 to measure the force once is 50us, after the electric signal of the measured force occurs, the maximum difference F between the measured force of the last ten times of distance measurement, that is, the interval time t=50us×10=500 us between the last time of distance measurement and the previous tenth time of distance measurement is calculated, and the deformation d=20mm/s×500us=0.01 mm of the elastic portion 31 occurs during this time, f=dk=0.01 mm×1n/mm=0.01N, so it can be seen that the measured force is almost the same in the last ten times of distance measurement, and the accuracy of the measured force is greatly improved.
As can be seen from the above, the elastic portion 31 has a buffering and protecting function for the piezoelectric sensor 36.
The measuring rod 2 is a straight-in measuring rod.
There are two ways of manipulating the micrometer, one by driving the force-measuring input 4 by a screw and one by driving the force-measuring input 4 by a straight line, the latter measuring more efficiently.
The two embodiments described above are only two aspects of the inventive idea and other variants, which are obvious to a person skilled in the art, should be considered within the scope of the claims.
Claims (9)
1. The micrometer comprises a micrometer frame, a measuring rod, a force measuring input part, a linear displacement sensor and a control part, wherein the force measuring input part is used for driving the measuring rod to reciprocate along an axis; the linear displacement sensor is used for sensing the relative displacement of the ruler frame and the measuring rod; the control part is used for driving and controlling the linear displacement sensor to measure distance and calculating distance measurement data;
The micrometer is characterized in that,
A force measuring sensor is connected between the measuring rod and the force measuring input part and is used for sensing force measurement and converting the force measurement into a force measuring electric signal;
The load cell comprises
An elastic part for measuring force deformation;
the signal part is used for outputting the force measurement electric signal;
The main trigger part and the auxiliary trigger part are connected with two ends of the elastic part and are used for generating the force measurement electric signals, one of the force measurement electric signals is connected with the measuring rod, and the other one of the force measurement electric signals is connected with the force measurement input part;
The signal part is connected with one of the main triggering part and the auxiliary triggering part and is electrically connected with the control part;
the main trigger part comprises a fixed-force main trigger end;
the auxiliary trigger part comprises a fixed force measurement auxiliary trigger end;
The fixed-force main trigger end and the fixed-force auxiliary trigger end are configured into a fixed-force trigger pair, and are used for measuring force to reach the deformation amount of the elastic part when the fixed-force is achieved, so that fixed-force electric signals are generated in the fixed-force trigger pair;
The force measurement is applied to the force measurement input part along the ranging direction, the force is transmitted to the measuring rod through the force measurement sensor, when the reacting force of the measured object is resisted by the measuring rod to reach the fixed force, the deformation quantity of the elastic part is generated, so that the fixed force triggers the generation of the fixed force electric signal, and the fixed force electric signal is transmitted to the control part through the signal part.
2. The micrometer of claim 1, wherein the main trigger portion further comprises a primary force main trigger end, the auxiliary trigger portion further comprises a primary force auxiliary trigger end, the primary force main trigger end and the primary force auxiliary trigger end are configured as a primary force trigger pair, and the primary force trigger pair is configured to generate a primary force signal through the signal portion when the primary force reaches the primary force, and the deformation of the elastic portion is generated, so that the primary force trigger pair generates a primary force signal, and the primary force signal is smaller than the fixed force.
3. The micrometer of claim 2, wherein the pair of force-determining triggers and the pair of primary force-determining triggers are one or a combination of mechanical switches, opto-electronic switches, magnetic induction switches.
4. The micrometer according to claim 1, wherein the main trigger portion is provided with a fixed force adjusting bolt for adjusting the fixed force, one end of the fixed force adjusting bolt is in threaded connection or hinged connection with the main trigger portion, the other end of the fixed force adjusting bolt is in hinged connection or screwed connection with the fixed force main trigger end, and the fixed force main trigger end can be far away from or close to the fixed force auxiliary trigger end along the trigger direction by rotating the fixed force adjusting bolt.
5. The micrometer according to claim 1, wherein the auxiliary trigger portion is provided with a fixed force measuring adjusting bolt for adjusting the fixed force, one end of the fixed force measuring adjusting bolt is in threaded connection or hinged connection with the auxiliary trigger portion, the other end of the fixed force measuring adjusting bolt is in hinged connection or screwed connection with the auxiliary trigger end of the fixed force measuring, and the auxiliary trigger end of the fixed force measuring bolt can be rotated to enable the auxiliary trigger end of the fixed force measuring to be far away from or close to the main trigger end of the fixed force measuring along the trigger direction.
6. A micrometer according to claim 1, wherein one of the primary trigger portion and the secondary trigger portion is provided with a piezoelectric sensor electrically connected to the signal portion, one of the piezoelectric sensors being bonded to the end face of the measuring rod or the measuring input portion for sensing a force and converting the force into the force-measuring electrical signal, the force-measuring electrical signal being transmitted to the control portion via the signal portion.
7. The micrometer of claim 1, wherein the elastic portion is a spring or a leaf spring.
8. The micrometer of claim 1, wherein the spindle is a straight-forward spindle.
9. The micrometer according to any one of claims 1 to 8, wherein the linear displacement sensor is one of an image displacement sensor, a grating displacement sensor, a magnetic grating displacement sensor and a capacitive grating displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011409218.4A CN112284200B (en) | 2020-12-06 | 2020-12-06 | Micrometer gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011409218.4A CN112284200B (en) | 2020-12-06 | 2020-12-06 | Micrometer gauge |
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| CN112284200A CN112284200A (en) | 2021-01-29 |
| CN112284200B true CN112284200B (en) | 2024-09-24 |
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| CN112815799A (en) * | 2021-03-27 | 2021-05-18 | 李里 | Digital display micrometer |
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| CN213335836U (en) * | 2020-12-06 | 2021-06-01 | 李里 | Micrometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554927A (en) * | 1983-08-30 | 1985-11-26 | Thermometrics Inc. | Pressure and temperature sensor |
| JP3751540B2 (en) * | 2000-07-26 | 2006-03-01 | 株式会社ミツトヨ | Measuring instrument |
| JP2007143302A (en) * | 2005-11-18 | 2007-06-07 | Saitama Prefecture | Minute displacement controller, device using the same and method |
| CN102252786B (en) * | 2011-06-13 | 2013-04-03 | 宾伟雄 | Shear force testing device |
| KR101407951B1 (en) * | 2013-03-19 | 2014-06-17 | 한국수력원자력 주식회사 | Test equipment for the measurement of compress force and distance of the motor operator springpack |
| CN107923566B (en) * | 2015-08-03 | 2020-10-23 | Ngi股份公司 | Method for establishing a signal indicative of pressure conditions in a suitable contact surface of a rubber elastomer of a machine foot, and a machine foot having a hydrostatic pressure sensor |
| CN106285263B (en) * | 2016-08-29 | 2017-10-20 | 宁波高新区英诺科技有限公司 | A door stopper alarm |
| CN106767226A (en) * | 2017-03-23 | 2017-05-31 | 江南大学 | Micrometer caliper with device for measuring force |
| CN206594272U (en) * | 2017-03-30 | 2017-10-27 | 三门县职业中等专业学校 | A kind of degree-of-freedom permanent magnet formula contactor mechanism dynamic checkout unit |
| CN208270119U (en) * | 2018-06-28 | 2018-12-21 | 浙江中智检测技术有限公司 | Shock-resistant pressure detection device |
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| CN213335836U (en) * | 2020-12-06 | 2021-06-01 | 李里 | Micrometer |
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