CN106989853B - A kind of micro- torque tester - Google Patents
A kind of micro- torque tester Download PDFInfo
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- CN106989853B CN106989853B CN201710311725.6A CN201710311725A CN106989853B CN 106989853 B CN106989853 B CN 106989853B CN 201710311725 A CN201710311725 A CN 201710311725A CN 106989853 B CN106989853 B CN 106989853B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/104—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving permanent magnets
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of micro- torque testers, are related to torsion-testing technical field, which includes: construction module and measurement module；The construction module includes structural framing and axial displacement control mechanism, and the axial displacement control mechanism is used to control the axial displacement of measurement axis, realizes the axial suspension of measurement axis；The measurement module includes angle displacement measurement component and torque drive component；Above-mentioned technical proposal of the invention has the advantages that the micro- torque tester performance is stablized, measuring accuracy it is high, it can be achieved that slight torque measurement.
Description
Technical field
The present invention relates to torsion-testing technical field, in particular to a kind of micro- torque tester.
Background technique
Micro- torque tester be a kind of contactless torque measuring instrument, it can be achieved that slight torque measurement.Micro- torque measuring
Examination instrument can be used for the measurement of the thrombus elastic force in hemorheology, to monitor the variation of thrombus elastic force in blood sample coagulation process.
Micro- torque tester can also be used in the average torque and maximum moment in staring torque and operational process when test bearing starts.
The measurement that present most of torque tester makes it can not achieve slight torque due to itself in the presence of friction, detection
Precision is not high, and detection function is single.
Summary of the invention
The technical problem to be solved in the present invention are as follows: in order to realize the measurement of slight torque, a kind of micro- torque tester is provided,
It is not high to solve detection accuracy, the single problem of detection function.
The present invention solves the technical solution that above-mentioned technical problem uses are as follows: a kind of micro- torque tester, including construction module
And measurement module；
Construction module includes structural framing and axial displacement control mechanism, and the axial displacement control mechanism is surveyed for controlling
The axial displacement of axis is measured, realizes the axial suspension of measurement axis；The structural framing for be fixedly mounted axial displacement control mechanism,
Angle displacement measurement component and torque drive component；
Measurement module includes angle displacement measurement component and torque drive component；The angle displacement measurement component is surveyed for measuring
Measure the rotational angle of axis；The torque drive component carrys out external influence suffered by offset measurement axis for generating reaction torque
Power makes measurement axis keep angular displacement constant；
The structural framing includes axle sleeve and outer magnetic ring, and two of them outer magnetic ring is fixed in axle sleeve by interference fit
Portion；
The axial displacement control mechanism includes measurement axis, internal magnetic ring, electromagnet, armature, position sensor, baffle, limit
Position baffle；
The armature is fixed on the upper end of measurement axis by holding screw, and two internal magnetic rings are fixed on by interference fit
The middle part of axis is measured, position sensor is fixed by screws in electromagnet upper end, and electromagnet is fixed by screws in axle sleeve
Upper end；
Two outer magnetic rings on two internal magnetic rings and axle sleeve on the measurement axis make to survey by coaxial and eccentric cooperation
Amount axis radial suspension simultaneously makes to measure the axis axial force downward by one, electromagnet and the measurement axis upper end of axle sleeve upper end
The axial force that armature keeps measurement axis upward by one carrys out the downward axial force that balancing a survey axis is subject to, downward
Axial force includes the gravity that the power axially downwardly of interior outer magnetic ring bias cooperation generation is subject to measurement axis, binding site sensor
The electromagnetic force size of metrical information regulating magnet make to measure axis axially loaded and balance remain stationary always；Matched by above
Conjunction and control can realize five freedom degrees of limitation measurement axis, and only there are the axial-rotation freedom degrees of measurement axis；
The baffle is fixed on the lower part of measurement axis by holding screw, and postive stop baffle is fixed by screws under axle sleeve
End, baffle and postive stop baffle play the role of mechanical position limitation with the use of the shaft orientation moving range of limitation measurement axis.
The angle displacement measurement component includes code-disc, code-disc bracket, measuring circuit plate；
The code-disc is fixed on code-disc bracket, and code-disc bracket is fixed on the top of measurement axis, and measuring circuit plate passes through spiral shell
Nail is fixed on the top of axle sleeve, is welded with encoder chip in measuring circuit plate；It is fixed on axle sleeve measuring circuit plate and is fixed on
Code-disc on measurement axis is used cooperatively the angular displacement for measuring measurement axis.
The torque drive component includes rotor magnet and stator winding；
The rotor magnet is fixed on the middle part of measurement axis, and stator winding is fixed on axle sleeve；According to angle displacement measurement group
The size and Orientation that the angular displacement information that part provides adjusts the driving current of stator winding makes measurement axis keep angular displacement constant；It is fixed
With the use of can produce a certain amount of torque effect to measure on axis, this torque is used for balancing a survey for sub- winding and rotor magnet
It is motionless that the extraneous torque that axis is subject to remain stationary measurement axis, reads over the measurement to the driving current of stator winding and realizes micro- torque
Measurement.
Above-mentioned technical proposal of the invention has the advantages that performance is stablized, and detection accuracy is high, easy to operate；It can be achieved
The measurement of slight torque.This instrument eliminates the moment of friction in operational process itself using magnetic suspension structure support, can transmit
Slight torque；Using closed-loop measuring principle, it is high-precision that torque cooperation to be measured is balanced by actively generating a torque
Encoder remains unchanged the axial angular displacement for measuring axis using closed-loop control, and height can be achieved in the variation by measuring driving current
The torque measurement of precision.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to micro- torque tester of the embodiment of the present invention；
Fig. 2 is the appearance schematic diagram according to micro- torque tester of the embodiment of the present invention；
Appended drawing reference meaning in figure are as follows: 1: axle sleeve；2: the first outer magnetic rings；3: the first internal magnetic rings；4: measurement axis；5: rotor magnetic
Iron；6: stator winding；7: the second outer magnetic rings；8: the second internal magnetic rings；9: position sensor；10: electromagnet；11: armature；12: surveying
Measure circuit board；13: code-disc；14: code-disc bracket；15: baffle；16: postive stop baffle.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail, implements below
Example is not intended to limit the scope of the invention for illustrating the present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of micro- torque tester, including construction module and measurement module.
Construction module include axle sleeve 1, the first outer magnetic ring 2, the first internal magnetic ring 3, measurement axis 4, in the second outer magnetic ring 7, second
Magnet ring 8, position sensor 9, electromagnet 10, armature 11, baffle 15 and postive stop baffle 16.
Measurement module includes rotor magnet 5, stator winding 6, measuring circuit plate 12, code-disc 13, code-disc bracket 14.
Axle sleeve 1 and the first outer magnetic ring 2, the second outer magnetic ring 7 constitute structural framing, and the first outer magnetic ring 2, the second outer magnetic ring 7 are
1 middle part of axle sleeve is fixed on by interference fit.
Measure axis 4, the first internal magnetic ring 3, the second internal magnetic ring 8, position sensor 9, electromagnet 10, armature 11, baffle 15, limit
Position baffle 16 together constitutes axial displacement control mechanism；
Armature 11 is fixed on the upper end of measurement axis 4 by holding screw, and the first internal magnetic ring 3, the second internal magnetic ring 8 pass through
Interference fit is fixed on the middle part of measurement axis 4, and position sensor 9 is fixed by screws in 10 upper end of electromagnet, electromagnet 10
It is fixed by screws in the upper end of axle sleeve 1；
The first internal magnetic ring 3, the second internal magnetic ring 8 on measurement axis 4 and the first outer magnetic ring 2, the second outer magnetic ring 7 on axle sleeve 1
Make to measure 4 radial suspension of axis and making by coaxial and eccentric cooperation and measure the axial force downward by one of axis 4, on axle sleeve 1
The axial force that the electromagnet 10 of end and the armature 11 of measurement 4 upper end of axis keep measurement axis 4 upward by one is come
The downward axial force that balancing a survey axis 4 is subject to, downward axial force include the first internal magnetic ring 3, outside the second internal magnetic ring 8, first
The gravity that the power axially downwardly and measurement axis 4 that the interior outer magnetic ring bias cooperation of magnet ring 2, the second outer magnetic ring 7 generates are subject to, in conjunction with
It is quiet that the electromagnetic force size of the metrical information regulating magnet 10 of position sensor 9 makes measurement 4 axially loaded of axis balance holding always
Only；Five freedom degrees of limitation measurement axis 4 can be realized by above cooperation and control, only there are the axial directions of measurement axis 4
Rotary freedom；
Baffle 15 is fixed on the lower part of measurement axis 4 by holding screw, and postive stop baffle 16 is fixed by screws in axle sleeve 1
Lower end, baffle 15 and postive stop baffle 16 play the role of mechanical position limitation with the use of the shaft orientation moving range of limitation measurement axis 4.
Measuring circuit plate 12, code-disc 13, code-disc bracket 14 collectively form angle displacement measurement component；
Code-disc 13 is fixed on code-disc bracket 14, and code-disc bracket 14 is fixed on the top of measurement axis 4, and measuring circuit plate 12 is logical
The top that screw is fixed on axle sleeve 1 is crossed, is welded with encoder chip in measuring circuit plate 12；It is fixed on measuring circuit plate on axle sleeve 1
12 are used cooperatively the angular displacement for measuring measurement axis 4 with the code-disc 13 being fixed on measurement axis 4.
Rotor magnet 5 and stator winding 6 collectively form torque drive component；
Rotor magnet 5 is fixed on the middle part of measurement axis 4, and stator winding 6 is fixed on axle sleeve 1；According to angle displacement measurement group
The size and Orientation that the angular displacement information that part provides adjusts the driving current of stator winding 6 makes measurement axis 4 keep angular displacement constant；
Stator winding 6 and rotor magnet 5 are with the use of can produce a certain amount of torque effect to measure on axis 4, this torque is for putting down
It is motionless that the extraneous torque that weighing apparatus measurement axis 4 is subject to remain stationary measurement axis 4, reads over the measurement of the driving current to stator winding 6
Realize the measurement of micro- torque.
Whole work process of the present invention is as follows:
S1. the axial displacement control mechanism for starting micro- torque tester floats measurement axle suspension, opens measurement module；
S2. torque to be measured is mounted on measurement axis, carries out the measurement of torque；
S3. measurement terminates, and unloads torque to be measured, closes measurement module and axial displacement control mechanism.
Above embodiments are provided just for the sake of the description purpose of the present invention, and are not intended to limit the scope of the invention.This
The range of invention is defined by the following claims.It does not depart from spirit and principles of the present invention and the various equivalent replacements made and repairs
Change, should all cover within the scope of the present invention.
Claims (1)
1. a kind of micro- torque tester, it is characterised in that: including construction module and measurement module；
Construction module includes structural framing and axial displacement control mechanism, and the axial displacement control mechanism is for controlling measurement axis
Axial displacement, realize measurement axis axial suspension；The structural framing is for being fixedly mounted axial displacement control mechanism, angle position
Shift measurement component and torque drive component；
Measurement module includes angle displacement measurement component and torque drive component；The angle displacement measurement component is for measuring measurement axis
Rotational angle；The torque drive component carrys out external forces suffered by offset measurement axis for generating reaction torque,
Measurement axis is set to keep angular displacement constant；
The structural framing includes axle sleeve and outer magnetic ring, and two of them outer magnetic ring is fixed in the middle part of axle sleeve by interference fit；
The axial displacement control mechanism includes measurement axis, internal magnetic ring, electromagnet, armature, position sensor, baffle, limiting block
Plate；
The armature is fixed on the upper end of measurement axis by holding screw, and two internal magnetic rings are fixed on measurement by interference fit
The middle part of axis, position sensor are fixed by screws in electromagnet upper end, and electromagnet is fixed by screws in the upper end of axle sleeve
Portion；
Two outer magnetic rings on two internal magnetic rings and axle sleeve on the measurement axis make to measure axis by coaxial and eccentric cooperation
Radial suspension simultaneously makes to measure the axis axial force downward by one, the electromagnet of axle sleeve upper end and the armature of measurement axis upper end
Come the downward axial force that balancing a survey axis is subject to, downward axial direction with the use of the axial force for keeping measurement axis upward by one
Power includes the gravity that the power axially downwardly of interior outer magnetic ring bias cooperation generation is subject to measurement axis, the survey of binding site sensor
The electromagnetic force size of amount information regulating magnet, which makes to measure axis axially loaded, to be balanced remain stationary always；By above cooperation with
Control can realize five freedom degrees of limitation measurement axis, and only there are the axial-rotation freedom degrees of measurement axis；
The baffle is fixed on the lower part of measurement axis by holding screw, and postive stop baffle is fixed by screws in the lower end of axle sleeve
Portion, baffle and postive stop baffle play the role of mechanical position limitation with the use of the shaft orientation moving range of limitation measurement axis；
The angle displacement measurement component includes code-disc, code-disc bracket, measuring circuit plate；
The code-disc is fixed on code-disc bracket, and code-disc bracket is fixed on the top of measurement axis, and measuring circuit plate is solid by screw
It is scheduled on the top of axle sleeve, is welded with encoder chip in measuring circuit plate；It is fixed on measuring circuit plate on axle sleeve and is fixed on measurement
Code-disc on axis is used cooperatively the angular displacement for measuring measurement axis；
The torque drive component includes rotor magnet and stator winding；
The rotor magnet is fixed on the middle part of measurement axis, and stator winding is fixed on axle sleeve；It is mentioned according to angle displacement measurement component
The size and Orientation that the angular displacement information of confession adjusts the driving current of stator winding makes measurement axis keep angular displacement constant；Stator around
Group and rotor magnet with the use of can produce the effect of a certain amount of torque to measure on axis, this torque for balancing a survey axis by
To extraneous torque make to measure axis and remain stationary motionless, read over the survey that micro- torque is realized to the measurement of the driving current of stator winding
Amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311725.6A CN106989853B (en) | 2017-05-05 | 2017-05-05 | A kind of micro- torque tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311725.6A CN106989853B (en) | 2017-05-05 | 2017-05-05 | A kind of micro- torque tester |
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| Publication Number | Publication Date |
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| CN106989853A CN106989853A (en) | 2017-07-28 |
| CN106989853B true CN106989853B (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710311725.6A Active CN106989853B (en) | 2017-05-05 | 2017-05-05 | A kind of micro- torque tester |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839058A (en) * | 2017-11-24 | 2019-06-04 | 赫安仕科技（苏州）有限公司 | A kind of contactless inductance type measurement angle device and its measurement method for thrombelastogram instrument |
| CN109372875A (en) * | 2018-11-20 | 2019-02-22 | 中国航发贵州黎阳航空动力有限公司 | A kind of big pressure nut of micro- torque |
Citations (2)
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| CN202329896U (en) * | 2011-11-21 | 2012-07-11 | 无锡市科瑞特精机有限公司 | Moment measuring wrench for electronic hand wheel |
| CN203837651U (en) * | 2014-04-29 | 2014-09-17 | 哈尔滨工程大学 | Angle displacement sensor testing device |
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|---|---|---|---|---|
| SU800729A1 (en) * | 1979-03-13 | 1981-01-30 | Московский Авиационный Технологическийинститут Им. K.Э.Циолковского | Moment meter |
| US6516508B1 (en) * | 1999-11-10 | 2003-02-11 | Siemens Vdo Automotive Corporation | Magnetoelastic non-compliant torque sensor and method of producing same |
| AT9782U3 (en) * | 2007-10-11 | 2008-10-15 | Avl List Gmbh | TORQUE TORQUEMETER |
| CN101943625B (en) * | 2009-07-07 | 2012-05-09 | 台州市质量技术监督检测研究院 | Micro-torque sensor calibrator based on magnetic suspension effect |
| CN202330188U (en) * | 2011-11-16 | 2012-07-11 | 华中科技大学 | Micro-torsion mechanical property testing device |
| CN202770729U (en) * | 2012-09-04 | 2013-03-06 | 济南美医林电子仪器有限公司 | Magnetic levitation bearing supporting structure step scan moment of force measuring device |
| CN103048071B (en) * | 2012-12-12 | 2015-08-26 | 北方工业大学 | Device and method for monitoring dynamic torque of frameless torque motor in suspension state |
| CN103217342A (en) * | 2013-04-18 | 2013-07-24 | 吉林大学 | Micro-torsion testing platform |
| CN105370559B (en) * | 2015-12-03 | 2017-08-01 | 浙江工业大学 | Refrigeration compressor moves back and forth mechanical mechanism no-load torque measurement apparatus and measuring method |
| CN106197478A (en) * | 2016-07-07 | 2016-12-07 | 哈尔滨工程大学 | A kind of magnetic suspension position finder micro-torque detection method |
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2017
- 2017-05-05 CN CN201710311725.6A patent/CN106989853B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202329896U (en) * | 2011-11-21 | 2012-07-11 | 无锡市科瑞特精机有限公司 | Moment measuring wrench for electronic hand wheel |
| CN203837651U (en) * | 2014-04-29 | 2014-09-17 | 哈尔滨工程大学 | Angle displacement sensor testing device |
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| CN106989853A (en) | 2017-07-28 |
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Effective date of registration: 20230526 Address after: 523000 hengjiao Zhenxing street, Shijie Town, Dongguan City, Guangdong Province Patentee after: EMERCYS ELECTRONICS Co.,Ltd. Address before: 100191 No. 37, Haidian District, Beijing, Xueyuan Road Patentee before: BEIHANG University |