CN106989868B - Method for calibrating output torque of speed reducer detector - Google Patents
Method for calibrating output torque of speed reducer detector Download PDFInfo
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- CN106989868B CN106989868B CN201710121601.1A CN201710121601A CN106989868B CN 106989868 B CN106989868 B CN 106989868B CN 201710121601 A CN201710121601 A CN 201710121601A CN 106989868 B CN106989868 B CN 106989868B
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- torsion bar
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- calibrator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
Abstract
The invention discloses a method for calibrating output torque of a speed reducer detector, which adopts a calibrator and the following steps to calibrate: firstly), a verification calibrator for obtaining the corresponding relation between the input torque value of the calibrator during verification and the torsional deformation angle value of the torsion bar during verification; and secondly) obtaining a torsional deformation angle value of the torsion bar during calibration, replacing the torsional deformation angle value of the torsion bar during verification by the torsional deformation angle value of the torsion bar during calibration, finding out an input torque value of the calibrator during verification from the corresponding relation, wherein the torque value is an output torque value of the reducer detector, replacing a read value at a corresponding moment by the torque sensor of the reducer detector for output, obtaining the corresponding relation between the read value and the output value of the torque sensor of the reducer detector, and applying the corresponding relation when the reducer detector is used for torque measurement. The invention can quickly calibrate the torque sensor of the reducer measuring instrument on site, so that the torque measurement of the reducer measuring instrument is more accurate, and the precision tracing is realized.
Description
Technical Field
The invention relates to a torque calibration method, in particular to a calibration method of output torque of a speed reducer detector.
Background
The torque sensor is a core component of the speed reducer testing device, and a measured torque value of the torque sensor is also an important basic quantity representing the performance of the speed reducer, so that the torque sensor is crucial to the calibration of the torque sensor. At present, the torque sensor of the domestic speed reducer testing device adopts a mode of inspection for precision tracing, and torque values above 5000Nm, only a few domestic verification mechanisms have the capability of verification, so that the verification is troublesome, the verification time is too long, the normal detection work of a user unit is influenced, errors such as coaxiality caused by the disassembly and the assembly also influence the accuracy of indicating values. In addition, the torque calibration method of the conventional speed reducer testing device directly measures the output end of a torque sensor, however, because the torque sensor is not directly connected with a tested speed reducer, a transmission chain exists between the torque sensor and the tested speed reducer, and the calibration state is inconsistent with the use state, because the loss of torque in transmission can be caused by the influence factors such as coaxiality error, deformation, friction and the like, and further the deviation exists between the actual torque value (the output torque of the speed reducer testing device) acting on the speed reducer and the reading value of the torque sensor, the output torque of the speed reducer testing device needs to be calibrated, so that the problem that the torque loss in the transmission chain cannot be calibrated and compensated is solved.
Disclosure of Invention
The invention provides a method for calibrating the output torque of a speed reducer detector, aiming at solving the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows: a method for calibrating output torque of a speed reducer detector is characterized in that a calibrator is adopted for calibration, the calibrator comprises a torsion bar, the upper end of the torsion bar is a torque input end connected with the output end of the speed reducer detector, the lower end of the torsion bar is a fixed end, an installation frame I is fixedly connected to the upper portion of the torsion bar, an installation frame II is fixedly connected to the lower portion of the torsion bar, a circular grating ruler is installed on the installation frame II, the circular grating ruler and the torsion bar are coaxially arranged, a reading head matched with the circular grating ruler is installed on the installation frame I, and the reading head is connected with a data display and recording device; the method comprises the following steps: one) certifying the calibrator: a torque measuring instrument of an instrument verification department is adopted to gradually apply torque to the calibrator from small to large until a set value is reached, the reading head and the circular grating ruler obtain a torsional deformation angle value of the torsion bar during verification, and the data display and recording device obtains a corresponding relation between an input torque value of the calibrator during verification and the torsional deformation angle value of the torsion bar during verification; secondly), the output torque of the speed reducer detector is calibrated by adopting the calibrator: fixing the lower end of the torsion bar, connecting the upper end of the torsion bar with the output end of the reducer detector, starting the reducer detector to gradually apply torque to the calibrator from small to large, obtaining a torsional deformation angle value of the torsion bar during calibration through the reading head and the circular grating ruler, replacing the torsional deformation angle value of the torsion bar during calibration with the torsional deformation angle value of the torsion bar during calibration, finding out an input torque value of the calibrator during calibration from a corresponding relation between the input torque value of the calibrator during calibration and the torsional deformation angle value of the torsion bar during calibration, wherein the input torque value of the calibrator during calibration is an output torque value of the reducer detector, outputting a read value at a corresponding moment through the reducer detector torque sensor, obtaining a corresponding relation between the read value and the output value of the reducer detector torque sensor, and applying the reducer detector to measure torque.
The mounting frame I and the mounting frame II are both of a cylindrical structure and are sleeved outside the torsion bar, the mounting frame I is fixed on the upper portion of the torsion bar through a connecting flange, the connecting flange is arranged on the upper portion of the torsion bar, and the mounting frame I and the mounting frame II are integrally formed; the mounting rack II is fixed to the lower portion of the torsion rod through a fixing disc, the fixing disc is arranged at the lower end of the torsion rod, and the mounting rack II and the fixing disc are integrally formed.
The invention has the advantages and positive effects that: by using the torsion bar, the problem that the traditional measuring method cannot calibrate the transmission chain torque loss error between the torque sensor and the measured speed reducer in the speed reducer measuring device is solved, errors caused by torsional deformation, friction, coaxiality and the like of the transmission chain are calibrated together, the torque sensor of the speed reducer measuring instrument can be calibrated on site quickly, the torque measurement of the speed reducer measuring instrument is more accurate, and the precision tracing is realized. The invention is convenient to use and can improve the calibration efficiency.
Drawings
FIG. 1 is a schematic perspective view of an aligner used in the present invention;
fig. 2 is a main sectional view of an aligner used in the present invention.
In the figure: 1. fixing the disc; 2. a mounting rack II; 3. a torsion bar; 4. a circular grating ruler; 5. a reading head; 6. a mounting frame I; 7. a connecting flange; 8. a torque input end; 9. data display and recording device.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
please refer to fig. 1 and 2, a method for calibrating output torque of a reducer detector, which uses a calibrator to calibrate, wherein the calibrator includes a torsion bar 3, the upper end of the torsion bar 3 is a torque input end 8 connected with the output end of the reducer detector, the lower end of the torsion bar is a fixed end, an installation rack i 6 is fixedly connected to the upper portion of the torsion bar 3, an installation rack ii 2 is fixedly connected to the lower portion of the torsion bar 3, a circular grating ruler 4 is installed on the installation rack ii 2, the circular grating ruler 4 and the torsion bar 3 are coaxially arranged, a reading head 5 adapted to the circular grating ruler 4 is installed on the installation rack i 6, and the reading head 5 is connected with a data display and recording device 9.
The method comprises the following steps:
one) certifying the calibrator: and a torque measuring instrument of an instrument verification department is adopted to gradually apply torque to the calibrator from small to large until a set value is reached, the reading head 5 and the circular grating ruler 4 obtain a torsional deformation angle value of the torsion bar 3 during verification, and the data display and recording device 9 obtains a corresponding relation between an input torque value of the calibrator during verification and the torsional deformation angle value of the torsion bar during verification.
Secondly), the output torque of the speed reducer detector is calibrated by adopting the calibrator: fixing the lower end of the torsion bar 3, connecting the upper end of the torsion bar with the output end of a reducer detector, starting the reducer detector to gradually apply torque to the calibrator from small to large, and obtaining a torsional deformation angle value of the torsion bar 3 during calibration through the reading head 5 and the circular grating ruler 6; the method comprises the steps of replacing a torsional deformation angle value of a torsion bar during verification with the torsional deformation angle value of the torsion bar during calibration, finding out an input torque value of a calibrator during verification from a corresponding relation between the input torque value of the calibrator during verification and the torsional deformation angle value of the torsion bar during verification, wherein the input torque value of the calibrator during verification is an output torque value of a reducer detector, replacing a read value at a corresponding moment with a reducer detector torque sensor for output, obtaining a corresponding relation between the read value and the output value of the reducer detector torque sensor, and applying the corresponding relation when the reducer detector is used for torque measurement.
In this embodiment, the mounting bracket i 6 and the mounting bracket ii 2 both have a cylindrical structure and are sleeved outside the torsion bar 3, the mounting bracket i 6 is fixed on the upper portion of the torsion bar 6 through a connecting flange 7, the connecting flange 7 is arranged on the upper portion of the torsion bar 3, and the mounting bracket i 6 and the mounting bracket ii are integrally formed; the mounting bracket II 2 is fixed on the lower part of the torsion bar 3 through a fixed disc 1, the fixed disc 1 is arranged at the lower end of the torsion bar 3, and the two are integrally formed. The data display and recording device 9 may be a computer.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the invention as claimed.
Claims (2)
1. The output torque calibration method of the reducer detector is characterized in that a calibrator is adopted for calibration, the calibrator comprises a torsion bar, the upper end of the torsion bar is a torque input end connected with the output end of the reducer detector, the lower end of the torsion bar is a fixed end, an installation frame I is fixedly connected to the upper portion of the torsion bar, an installation frame II is fixedly connected to the lower portion of the torsion bar, a circular grating ruler is installed on the installation frame II, the circular grating ruler and the torsion bar are coaxially arranged, a reading head matched with the circular grating ruler is installed on the installation frame I, and the reading head is connected with a data display and recording device;
the method comprises the following steps:
one) certifying the calibrator: a torque measuring instrument of an instrument verification department is adopted to gradually apply torque to the calibrator from small to large until a set value is reached, the reading head and the circular grating ruler obtain a torsional deformation angle value of the torsion bar during verification, and the data display and recording device obtains a corresponding relation between an input torque value of the calibrator during verification and the torsional deformation angle value of the torsion bar during verification;
secondly), the output torque of the speed reducer detector is calibrated by adopting the calibrator: fixing the lower end of the torsion bar, connecting the upper end of the torsion bar with the output end of a reducer detector, starting the reducer detector to gradually apply torque to the calibrator from small to large, obtaining a torsional deformation angle value of the torsion bar during calibration through the reading head and the circular grating ruler, replacing the torsional deformation angle value of the torsion bar during calibration with the torsional deformation angle value of the torsion bar during calibration, finding out an input torque value of the calibrator during calibration from a corresponding relation between the input torque value of the calibrator during calibration and the torsional deformation angle value of the torsion bar during calibration, wherein the input torque value of the calibrator during calibration is an output torque value of the reducer detector, replacing a read value at a corresponding moment with the reducer detector torque sensor to output, obtaining a corresponding relation between a read value and an output value of the reducer detector torque sensor, and applying the reducer detector to measure torque.
2. The method for calibrating the output torque of the reducer detector according to claim 1, wherein the mounting frame I and the mounting frame II are both of a cylindrical structure and are sleeved outside the torsion bar, the mounting frame I is fixed on the upper portion of the torsion bar through a connecting flange, the connecting flange is arranged on the upper portion of the torsion bar, and the mounting frame I and the mounting frame II are integrally formed; the mounting rack II is fixed to the lower portion of the torsion bar through a fixing disc, the fixing disc is arranged at the lower end of the torsion bar, and the fixing disc and the torsion bar are integrally formed.
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| CN201710121601.1A CN106989868B (en) | 2017-03-02 | 2017-03-02 | Method for calibrating output torque of speed reducer detector |
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| CN201710121601.1A CN106989868B (en) | 2017-03-02 | 2017-03-02 | Method for calibrating output torque of speed reducer detector |
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| CN106989868B true CN106989868B (en) | 2022-11-18 |
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| CN110207984A (en) * | 2019-06-20 | 2019-09-06 | 天津大学 | A kind of torsion calibration device and method of precision speed reduction device combination property detector |
| CN110220641A (en) * | 2019-07-11 | 2019-09-10 | 山东省青岛第四十五中学（青岛工贸职业学校） | A kind of static torque calibrating installation and calibration method |
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| CN102252804A (en) * | 2011-04-29 | 2011-11-23 | 中国计量科学研究院 | Multi-functional torque calibration device |
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| CN102252804A (en) * | 2011-04-29 | 2011-11-23 | 中国计量科学研究院 | Multi-functional torque calibration device |
| CN202547846U (en) * | 2012-03-02 | 2012-11-21 | 山东鸿成达机电装备有限公司 | Comprehensive calibrator for torque and rotary angles |
| DE102012104874A1 (en) * | 2012-06-05 | 2013-12-05 | Technische Universität München | Optical measuring system with polarization compensation and corresponding method |
| CN103048071A (en) * | 2012-12-12 | 2013-04-17 | 北方工业大学 | Device and method for monitoring dynamic torque of frameless torque motor in suspension state |
| CN103115770A (en) * | 2013-01-23 | 2013-05-22 | 南京理工大学 | Ball screw assembly precision retaining ability testing device |
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