CN103196493A - Measuring device and measuring method of microscale torsional angle and torque - Google Patents
Measuring device and measuring method of microscale torsional angle and torque Download PDFInfo
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- CN103196493A CN103196493A CN2013101046883A CN201310104688A CN103196493A CN 103196493 A CN103196493 A CN 103196493A CN 2013101046883 A CN2013101046883 A CN 2013101046883A CN 201310104688 A CN201310104688 A CN 201310104688A CN 103196493 A CN103196493 A CN 103196493A
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Abstract
The invention relates to a measuring device and a measuring method of a microscale tirosional angle and torque. The measuring device comprises a detection mechanism, a controller and an upper computer, wherein the controller is respectively connected with the detection mechanism and the upper computer, the detection mechanism comprises a base, a stand column and a single-freedom-degree support frame, the stand column is arranged on the upper surface of the base, the upper portion of the stand column is provided with the single-freedom-degree support frame capable of moving up and down in the vertical direction in a penetrated mode, a sensor lower shell body is connected with the upper portion of the single-freedom-degree support frame in a clamped mode, a sensor upper shell body and a sensor are respectively connected with the upper portion of the sensor lower shell body, an upper chuck is arranged at the top end of the upper shell body, a torsion wire is connected with the lower end of the upper chuck, the lower end of the torsion wire is fixedly connected with a mandrel through a lower chuck, the sensor is installed on the outer portion of the mandrel in a sleeved mode, and a measuring head is connected with the lower end of the mandrel. The measuring device and the measuring method have the advantages that the structure is simple, design is reasonable, the resolution ratio is high, a harsh industrial application environment is met, repeatability is good, shock-resistant performance is good, installation and maintenance are convenient, and a detection method is reliable and simple in operation.
Description
Technical field
The present invention relates to torsional angle and torque measurement technical field, relate in particular to measurement mechanism and the measuring method of microscale torsional angle and moment of torsion.
Background technology
Moment of torsion and torsional angle measurement be the development research, test analysis, quality inspection, pattern of various engineering goods identify and work such as energy-conservation, safety or optimal control in requisite content.Along with the fast development of modern science and technology, moment of torsion and torsional angle measuring technique fully cause people's attention, become a new branch of measuring technology.Moment of torsion and torsional angle are major parameters in numerous mechanical value measurings.In new and high technology, moment of torsion and torsional angle measuring technique are subjects of many-sided knowledge such as integrated application machinery, electronics, physics, computing machine.
Measure the method for moment of torsion, can be divided into mode in TRANSFER METHOD (turning round method of principal axes), balance force method (counter-force method) and the energy conversion method etc. three according to its ultimate principle.TRANSFER METHOD is the method that moment of torsion is measured in the variation of the physical parameter that produces when transmitting moment of torsion according to flexible member, and physical parameter can be distortion, stress or the strain of flexible member.The balance force method is exactly to measure trimming moment on the body to determine the method for action torque size on the machine shaft, also claims the counter-force method.The energy conversion method is the method according to other energy parameter (as the parameter of electric machine) measurement mechanical energy parameter and moment of torsion.Method commonly used in the measurement of angle field has: mechanical type, electromagnetic type and three kinds of angle measurement methods of optical profile type.
Three kinds of torque measuring methods in sum, TRANSFER METHOD and balance force method are directly to measure the method for moment of torsion, it is measured conveniently, degree of accuracy is high, but it is poor to the having relatively high expectations of measurement environment, earthquake-proof function, and the energy conversion method is to measure the method for moment of torsion indirectly, measuring error is bigger, often reaches ± (10～15) %.So only under the occasion that can't directly measure, just adopt the indirect method of measurement.The metering system of existing torsional angle to the requirement of measurement environment than higher, install more complicated, can not accurate recording subtle change amount.
Therefore, at above deficiency, the invention provides measurement mechanism and the method for a kind of microscale torsional angle and moment of torsion.
Summary of the invention
(1) technical matters that will solve
The measurement mechanism that the objective of the invention is to solve existing torsional angle and moment of torsion to the requirement of test environment than higher, the problem complicated, that precision is low is installed.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides the measurement mechanism of a kind of microscale torsional angle and moment of torsion, it comprises testing agency, controller and host computer, controller connects testing agency and host computer respectively, described testing agency comprises base, column and single-degree-of-freedom carriage, the upper surface left side of base is provided with column, the top of column is equipped with mobile single-degree-of-freedom carriage under the energy in the vertical direction, single free carriage top is connected with the sensor lower house, the top of sensor lower house is connected with sensor upper shell and sensor respectively, the top of described upper shell is provided with upper grip, the upper grip lower end connects torsion wire, the lower end of torsion wire is by the fixedly connected mandrel of lower chuck, and described sensor sleeve is contained in the outside of mandrel, and the lower end of mandrel is connected with measuring head.
Wherein, described sensor comprises blade, lower blade, coil groups member and blade sleeve, blade and lower blade are fixedly mounted on the mandrel respectively, described blade jacket casing is in the outside of mandrel, the top and bottom of blade sleeve connect blade and lower blade respectively, described coil groups member is established the outside that is enclosed within the blade sleeve, and the outer rim of coil groups member is against the upper surface of sensor lower house.
Described sensor is non-contact angle sensor, and described coil groups member does not all contact with mandrel, blade and lower blade.
Described coil groups member comprises circuit board and coil groups, and described circuit board is provided with the coil groups of two groups of symmetries, and the center of circuit board is provided with first pilot hole.
Described blade and lower blade are non-magnetic conductive metal sheet, and blade and lower blade all are provided with second pilot hole and the 3rd pilot hole in the center, and the structure of blade and lower blade is identical.
The free carriage of described list is provided with first through hole, and described sensor lower house is provided with second through hole corresponding with first through hole between two parties, and described mandrel is successively by extending downwards behind first through hole and second through hole.
The upper surface of described base also is provided with the two-degree-of-freedom micro platform, and described two-degree-of-freedom micro platform can be done forward and backward and left and right movement in surface level.
The lower surface of described base is provided with three adjustable foots pad.
Described controller comprises signal generating module, signal condition module and signal acquisition module, described signal generating module provides high-frequency signal source for the coil groups member, make the coil groups member produce stable alternating magnetic field, described signal condition module is connecting coil fabric part and signal acquisition module respectively, in order to change from the electric signal on the coil groups of coil groups member, and cooperate signal acquisition module to carry out Information Monitoring, information after described signal acquisition module will be handled is transferred to host computer, after by host computer information being handled, show test results by data and figure.
The present invention also provides the measuring method of the measurement mechanism of a kind of microscale torsional angle and moment of torsion, may further comprise the steps:
S1, choose measuring head;
S2, adjust adjustable foot pad, make the upper surface maintenance level of base;
S3, testee is connected in the lower end of measuring head, by adjusting two-freedom platform and single-degree-of-freedom carriage, makes that the pivot center of testee is consistent with the axis of this proving installation mandrel, and make torsion wire be in tensioning state;
S4, run signal generation module, signal generating module is sent high-frequency signal source, produces stable alternating magnetic field;
S5, startup testee, measuring head rotates with testee, spinning movement is delivered to torsion wire by mandrel, blade utilizes rotary course to have the different areas of cutting in the inductance alternating magnetic fields with lower blade, produce different eddy current effect intensity, cause the variation of inductance value, described controller is by the variation measuring and calculating angle of the inductance value that receives;
S6, sensor are transferred to host computer with angle signal and the subtle change amount that detects, and draw the numerical value of torsional angle and moment of torsion after upper computer software is handled, and show and the record result by data and figure.
(3) beneficial effect should the combination technology feature, because which technical characterictic has been realized following effect
Technique scheme of the present invention has following advantage: serve as the designed mechanism for testing in basis with the principle of work of torsion balance, simple in structure, easy for installation, stable performance, can adapt to complicated industrial environment; The design of torsion wire makes that described device earthquake-proof function is good, measuring accuracy is high, good reproducibility; The subtle change amount that can realize described device detects the task with record, and satisfies the requirement of the reliable and simple operations of detection method.
Description of drawings
Fig. 1 is the structured flowchart of the measurement mechanism of microscale torsional angle of the present invention and moment of torsion;
Fig. 2 is the structural drawing of testing agency of the present invention;
Fig. 3 is the structural drawing of coil groups member of the present invention;
Fig. 4 is the structural drawing of blade of the present invention.
Among the figure: 1: upper grip; 2: torsion wire; 3: lower chuck; 4: blade; 5: the coil groups member; 6: lower blade; 7: mandrel; 8: measuring head; 9: the two-degree-of-freedom micro platform; 10: base; 11: adjustable foot pad; 12: column; 13: the single-degree-of-freedom carriage; 14: plastic washer; 15: the sensor lower house; 16: the blade sleeve; 17: the blade clamp nut; 18: the sensor upper shell; 19: sensor; 20: circuit board; 21: coil groups.
Embodiment
Below in conjunction with drawings and Examples the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Shown in Fig. 1-2, a kind of microscale torsional angle that the embodiment of the invention provides and the measurement mechanism of moment of torsion, it comprises testing agency, controller and host computer, controller connects testing agency and host computer respectively, described testing agency comprises base 10, column 12 and single-degree-of-freedom carriage 13, the upper surface left side of base 10 is provided with column 12, the top of column 12 is equipped with mobile single-degree-of-freedom carriage 13 under the energy in the vertical direction, single free carriage 13 tops are connected with sensor lower house 15, the top of sensor lower house 15 is connected with sensor upper shell 18 and sensor 19 respectively, and sensor 19 is positioned at sensor upper shell 18 outsides.
The top of described sensor upper shell 18 is provided with upper grip 1, upper grip 1 lower end connects torsion wire 2, torsion wire 2 is fixedly connected on the sensor upper shell 18 by upper grip 1, the lower end of torsion wire 2 is by lower chuck 3 fixedly connected mandrels 7, sensor 19 is sleeved on the outside of mandrel 7, and the lower end of mandrel 7 is connected with measuring head 8, and measuring head 8 is coupling arrangement, need to select different models according to different test-purpose, described mandrel 7 is metal shaft.
Wherein, described sensor 19 comprises blade 4, lower blade 6, coil groups member 5 and blade sleeve 16, blade 4 and lower blade 6 are fixedly mounted on the mandrel 7 by blade clamp nut 17 and plastic washer 14 respectively, blade sleeve 16 is enclosed within the outside of mandrel 7, the top and bottom of blade sleeve 16 connect blade 4 and lower blade 6 respectively, described coil groups member 5 is enclosed within the outside of blade sleeve 16, and leave the gap with blade sleeve 16, the outer rim of coil groups member 5 is against the upper surface of sensor lower house 15, and coil groups member 5 is used with blade 4 and lower blade 6.
Described sensor 19 is non-contact angle sensor, belongs to the current vortex angular transducer category, and described coil groups member 5 does not all contact with mandrel 7, blade 4 and lower blade 6, and there is relative motion relation in coil groups member 5 with blade 4 and lower blade 6.
As shown in Figure 3-4, described coil groups member 5 comprises circuit board 20 and coil groups 21, described circuit board 20 is provided with the coil groups 21 of two groups of symmetries, the center of circuit board 20 is provided with first pilot hole, described coil groups member 5 is set in the outside of mandrel 7 by first pilot hole, described coil groups member 5 feeds high-frequency current and produces alternating magnetic field, its diagonal is symmetrical coil groups 21, described blade 4 and lower blade 6 are non-magnetic conductive metal sheet, blade 4 and lower blade 6 all are provided with second pilot hole and the 3rd pilot hole in the center, described blade 4 and lower blade 6 are set in mandrel 7 outsides by second pilot hole and the 3rd pilot hole respectively, described blade 4 is identical with the structure of lower blade 6, measure-alike, and all corresponding with the structure of coil groups member 5.
Need to prove, there is different coil groups members 5 to choose according to different test purposes and test object, blade 4 and lower blade 6 also need to match with coil groups member 5, the structure that the structure of coil groups member 5 of the present invention provides including but not limited to Fig. 3, the structure that the structure of blade 4 and lower blade 6 provides including but not limited to Fig. 4.
The free carriage 13 of described list is provided with first through hole, described sensor lower house 15 is provided with second through hole corresponding with first through hole between two parties, by extending downwards behind first through hole and second through hole, mandrel 7 lays respectively at the center of first through hole and second through hole to described mandrel 7 successively.
The upper surface of described base 10 also is provided with two-degree-of-freedom micro platform 9, two-degree-of-freedom micro platform 9 be arranged at mandrel 7 under and be positioned at the right side of single free carriage 13, two-degree-of-freedom micro platform 9 is in order to placing tested object and can realize forward and backward and left and right motion in the surface level, in order to the surface level position of adjusting tested object and keep tested object consistent with the rotating shaft of mandrel 7.
Described single-degree-of-freedom carriage 13 is used with column 12, and single-degree-of-freedom carriage 13 can move along column 12 single-degree-of-freedoms, in order to adjust the height of measuring head 8 according to the differing heights of testee.
The lower surface of described base 10 is provided with three adjustable foots pad 11, and adjustable foot pad 11 is used for adjusting the working water plane of proving installation.
Described controller comprises signal generating module, signal condition module and signal acquisition module, described signal generating module provides high-frequency signal source for coil groups member 5, make coil groups member 5 produce stable alternating magnetic field, described signal condition module is connecting coil fabric part 5 and signal acquisition module respectively, in order to change from the electric signal on the coil groups 21 of coil groups member 5, and cooperate signal acquisition module to carry out Information Monitoring, information after described signal acquisition module will be handled is transferred to host computer, after by host computer information being handled, show test results by data and figure.
The present invention also provides the measuring method of the measurement mechanism of a kind of microscale torsional angle and moment of torsion, may further comprise the steps:
S1, choose measuring head 8, measuring head 8 has multiple model, needs select according to test object with to the requirement of test result;
S2, adjust adjustable foot pad 11, make the upper surface maintenance level of base 10;
S3, testee is connected in the lower end of measuring head 8, connected mode is that positive coupling is fastenedly connected or screw threads for fastening connects, adjust respectively afterwards two-degree-of-freedom micro platform 9 the front and back of surface level and about the position and the upper and lower position of single-degree-of-freedom carriage 13 in the vertical directions, make the pivot center of testee and the axis of this proving installation mandrel 7 be consistent, and make torsion wire 2 be in tensioning state;
S4, run signal generation module, signal generating module is sent high-frequency signal source, makes sensor 19 produce stable alternating magnetic field;
S5, startup testee, because the annexation of testee and measuring head 8, measuring head 8 rotates with testee, the spinning movement of measuring head 8 is conducted to being delivered to torsion wire 2 behind the mandrel 7, blade 4 utilizes rotary course to have the different areas of cutting in the inductance alternating magnetic fields with lower blade 6, produce different eddy current effect intensity, cause the variation of inductance value, described controller is by the variation measuring and calculating angle of the inductance value that receives;
In S6, the test process, sensor 19 is transferred to host computer with detected angle electric signal and subtle change amount, draws torsional angle and the torque value of testee after upper computer software is handled, and shows and the record result by data and figure.
In sum, the measurement mechanism of described microscale torsional angle and moment of torsion is simple in structure, resolution is high, satisfy harsh commercial Application environment, good reproducibility, easy to installation and maintenance, the measuring method step of described microscale torsional angle and moment of torsion is simple, test result degree of accuracy height, during concrete enforcement, measurement range is at-10 °～+ 10 °, and measuring accuracy is accurate to 0.001 °.
The above only is a kind of preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. the measurement mechanism of a microscale torsional angle and moment of torsion, it comprises testing agency, controller and host computer, controller connects testing agency and host computer respectively, it is characterized in that: described testing agency comprises base (10), column (12) and single-degree-of-freedom carriage (13), the upper surface of base (10) is provided with column (12), the top of described column (12) is equipped with mobile single-degree-of-freedom carriage (13) under the energy in the vertical direction, the free carriage of described list (13) top is connected with sensor lower house (15), the top of described sensor lower house (15) is connected with sensor upper shell (18) and sensor (19) respectively, the top of described sensor upper shell (18) is provided with upper grip (1), upper grip (1) lower end connects torsion wire (2), the lower end of torsion wire (2) is fixedly connected with mandrel (7) by lower chuck (3), described sensor (19) is sleeved on the outside of described mandrel (7), and the lower end of described mandrel (7) is connected with measuring head (8).
2. the measurement mechanism of microscale torsional angle according to claim 1 and moment of torsion, it is characterized in that: described sensor (19) comprises blade (4), lower blade (6), coil groups member (5) and blade sleeve (16), blade (4) and lower blade (6) are enclosed within respectively on the mandrel (7), described blade sleeve (16) is enclosed within the outside of described mandrel (7), the top and bottom of described blade sleeve (16) connect blade (4) and lower blade (6) respectively, described coil groups member (5) is enclosed within the outside of described blade sleeve (16), and the outer rim of coil groups member (5) is against the upper surface of sensor lower house (15).
3. the measurement mechanism of microscale torsional angle according to claim 2 and moment of torsion, it is characterized in that: described sensor (19) is non-contact angle sensor, and described coil groups member (5) does not all contact with mandrel (7), blade (4) and lower blade (6).
4. the measurement mechanism of microscale torsional angle according to claim 2 and moment of torsion, it is characterized in that: described coil groups member (5) comprises circuit board (20) and coil groups (21), described circuit board (20) is provided with the coil groups (21) of two groups of symmetries, and the center of circuit board (20) is provided with first pilot hole.
5. the measurement mechanism of microscale torsional angle according to claim 2 and moment of torsion, it is characterized in that: described blade (4) and lower blade (6) are non-magnetic conductive metal sheet, blade (4) and lower blade (6) all are provided with second pilot hole and the 3rd pilot hole in the center, and blade (4) is identical with the structure of lower blade (6).
6. the measurement mechanism of microscale torsional angle according to claim 1 and moment of torsion, it is characterized in that: the free carriage of described list (13) is provided with first through hole, described sensor lower house (15) is provided with second through hole corresponding with first through hole between two parties, and described mandrel (7) is successively by extending downwards behind first through hole and second through hole.
7. the measurement mechanism of microscale torsional angle according to claim 1 and moment of torsion, it is characterized in that: the upper surface of described base (10) also is provided with two-degree-of-freedom micro platform (9), and described two-degree-of-freedom micro platform (9) can be done forward and backward and left and right movement in surface level.
8. the measurement mechanism of microscale torsional angle according to claim 1 and moment of torsion, it is characterized in that: the lower surface of described base (10) is provided with three adjustable foots pad (11).
9. according to the measurement mechanism of each described microscale torsional angle of claim 1-8 and moment of torsion, it is characterized in that: described controller comprises signal generating module, signal condition module and signal acquisition module, described signal generating module is that coil groups member (5) provides high-frequency signal source, make coil groups member (5) produce stable alternating magnetic field, described signal condition module is connecting coil fabric part (5) and signal acquisition module respectively, in order to change from the electric signal on the coil groups (21) of coil groups member (5), and cooperate signal acquisition module to carry out Information Monitoring, information after described signal acquisition module will be handled is transferred to host computer, after by host computer information being handled, show test results by data and figure.
10. the measuring method of the measurement mechanism of a microscale torsional angle and moment of torsion is characterized in that: may further comprise the steps:
S1, choose measuring head (8);
S2, adjust adjustable foot pad (11), make the upper surface of base (10) keep level;
S3, testee is connected in the lower end of measuring head (8), by adjusting two-degree-of-freedom micro platform (9) and single-degree-of-freedom carriage (13), make that the pivot center of testee is consistent with the axis of this proving installation mandrel (7), and make torsion wire (2) be in tensioning state;
S4, run signal generation module, signal generating module is sent high-frequency signal source, produces stable alternating magnetic field;
S5, startup testee, measuring head (8) rotates with testee, spinning movement is delivered to torsion wire by mandrel (7), blade (4) utilizes rotary course to have the different areas of cutting in the inductance alternating magnetic fields with lower blade (6), produce different eddy current effect intensity, cause the variation of inductance value, described controller is by the variation measuring and calculating angle of the inductance value that receives;
S6, sensor (19) are transferred to host computer with angle signal and the subtle change amount that detects by controller, draw the numerical value of torsional angle and moment of torsion after upper computer software is handled, and show and the record result by data and figure.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614539A (en) * | 2013-11-05 | 2015-05-13 | 北京乐普医疗科技有限责任公司 | Thrombelastogram instrument |
| CN105300579A (en) * | 2014-06-04 | 2016-02-03 | 惠州市德赛西威汽车电子股份有限公司 | Apparatus for detecting moment of motormeter stepper motor and testing method thereof |
| CN107370757A (en) * | 2017-08-28 | 2017-11-21 | 苏州乐菲昂科技有限公司 | Internet of things system, angle measurement method and device based on ANT agreements |
| CN108254198A (en) * | 2016-12-29 | 2018-07-06 | 上海海拉电子有限公司 | A kind of torque and angle measurement system and torque and angle measurement method |
| CN113203639A (en) * | 2021-04-21 | 2021-08-03 | 华中科技大学 | Torsion testing device for microscale material |
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| CN102128752A (en) * | 2010-11-26 | 2011-07-20 | 中国科学院力学研究所 | Micro-torque mechanical testing machine and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105300579A (en) * | 2014-06-04 | 2016-02-03 | 惠州市德赛西威汽车电子股份有限公司 | Apparatus for detecting moment of motormeter stepper motor and testing method thereof |
| CN108254198A (en) * | 2016-12-29 | 2018-07-06 | 上海海拉电子有限公司 | A kind of torque and angle measurement system and torque and angle measurement method |
| CN107370757A (en) * | 2017-08-28 | 2017-11-21 | 苏州乐菲昂科技有限公司 | Internet of things system, angle measurement method and device based on ANT agreements |
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| CN113203639A (en) * | 2021-04-21 | 2021-08-03 | 华中科技大学 | Torsion testing device for microscale material |
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| CN103196493B (en) | 2015-09-09 |
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