CN106500907B - It is a kind of with the torque spanner calibrating instrument of equilibrant force position compensation and its compensation method - Google Patents
It is a kind of with the torque spanner calibrating instrument of equilibrant force position compensation and its compensation method Download PDFInfo
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- CN106500907B CN106500907B CN201610873294.8A CN201610873294A CN106500907B CN 106500907 B CN106500907 B CN 106500907B CN 201610873294 A CN201610873294 A CN 201610873294A CN 106500907 B CN106500907 B CN 106500907B
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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
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
The invention discloses a kind of with the torque spanner calibrating instrument of equilibrant force position compensation and its compensation method.Measurement indicating meter, torque sensor and equalising torque mechanism are installed in and are fixed in rack, the coaxial fixing sleeve in lantern ring end of torque spanner is on torque sensor, the rod end coupling torque balance mechanism of torque spanner, by the arm of force of equalising torque mechanism controls torque, equalising torque mechanism side is equipped with the displacement sensor for detecting torque arm length；Bottom of the frame is equipped with driving mechanism, and driving mechanism, which connects torque sensor and drives, to be applied on torque to torque spanner, and torque sensor and displacement sensor are connect with measurement indicating meter.The present invention carries out torque measurement using the method for equilibrant force position compensation, can significantly improve the torque measurement precision of torque spanner calibrating instrument.
Description
Technical field
The present invention relates to torque spanner calibrating instruments, more particularly to a kind of torque spanner calibrating with equilibrant force position compensation
Instrument and its compensation method.
Background technique
Torque spanner calibrating instrument is widely used in measurement technology mechanism and automobile, vessel and various dynamic power machines manufacture enterprise
Industry is mainly used for the calibrating and calibration of torque spanner.Due on torsion spanner calibrating instrument torque sensor use when not only by
The thrust for acting on to torque, while also being generated by balance mechanism lever, it is defeated that thrust makes torque sensor generate an interference
Out, to keep the output torque of torque spanner calibrating instrument not only directly proportional to the torque value acted on, also with the effect of equilibrant force
Position is related.
During actual measurement, since balance point of force application is pulled to the distance between torque sensor L and tested torque
Son is related, therefore one timing of standard torque applied in test process, and the output of torque sensor is not necessarily, to influence
The measurement accuracy of torque spanner calibrating instrument.
Summary of the invention
It is exported and balance masterpiece in existing torsion spanner calibrating instrument for generating the torque sensor of standard torque value
With the related problem in position, the invention proposes a kind of with the torque spanner calibrating instrument of equilibrant force position compensation and its compensation side
Method is monitored equilibrant force active position with displacement sensor and compensates to measurement error caused by change in location, energy
Effectively improve the measurement accuracy of torque spanner calibrating instrument.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
One, a kind of torque spanner calibrating instrument with equilibrant force position compensation:
Calibrating instrument includes rack, torque sensor, displacement sensor, driving mechanism, equalising torque mechanism and measurement instruction
Instrument, measurement indicating meter, torque sensor and equalising torque mechanism are respectively mounted and are fixed in rack, the lantern ring end of torque spanner
For coaxial fixing sleeve on torque sensor, the rod end coupling torque balance mechanism of torque spanner passes through equalising torque mechanism controls
The arm of force of torque, equalising torque mechanism side are equipped with the displacement sensor for detecting torque arm length；Bottom of the frame is equipped with
Driving mechanism, driving mechanism, which connects torque sensor and drives, to be applied on torque to torque spanner, torque sensor and displacement sensing
Device is connect with measurement indicating meter.
The equalising torque mechanism includes equalising torque mechanism rack, block, rolled round and screw rod, equalising torque mechanism branch
Frame is fixedly mounted on the rack, is mounted on balance mechanism bracket to two screw rod horizontal parallels, block, block are cased on screw rod
Screw pair is formed with screw rod, two screw rods are connect with rolled round, and the rod end of torque spanner, which is fixed, to be clipped on two screw rods
Block between, rotation rolled round drive screw rod rotate so that drive block along screw rod move axially so that block gear pulled in torsion
The different location at hand lever end is to realize the adjustment of the arm of force.
The displacement sensor is parallel with screw rod and is mounted near block, and the fixing end of displacement sensor is connected to machine
On frame, mobile terminal is connected on the block of equalising torque mechanism, the displacement that displacement sensor detection block is moved axially along screw rod.
The driving mechanism includes the movement transmission members of speed reducer and motor, and motor is through speed reducer and torque sensor
Connection.The driving mechanism can also be by other gear structure compositions such as rolled round, screw rod, worm and gear.
The measurement indicating meter has torque path port and displacement access port, and torque sensor output end mouth connects
It is connected to the torque path port of measurement indicating meter, the displacement access port of displacement sensor output port and measurement indicating meter
Connection.
The displacement sensor is the primary element for displacement measurement.
Two, a kind of equilibrant force position compensation method of torque spanner calibrating instrument, it is characterised in that:
1) driving mechanism is run, and is applied on torsion to torque sensor, the fixed torque of torque sensor output to torsion
On spanner, the rod end of torque spanner is fixed between two pieces of blocks for being clipped in the equalising torque mechanism；
2) block is driven to move axially along screw rod by rotation rolled round, adjustment block is blocked in torque spanner rod end difference position
It sets, forms different arm of force distances, torque arm length is converted to by the position that displacement sensor measures；
3) the torque arm length value that the output valve of torque sensor and displacement sensor measure is input to measurement indicating meter
In, the standard torque value after equilibrant force position compensation is calculated in amplification, AD conversion, to complete to torque spanner calibrating instrument
Equilibrant force position cause the compensation of measurement error.
The calculating of the measurement indicating meter Plays torque value uses following formula:
Wherein, k1、k2The first, second weight parameter is respectively indicated, M indicates the standard torque value after equilibrant force position compensation,
L indicates block to the torque arm length between torque spanner rotary shaft, the output valve of S torque sensor.
Described is repeatedly tested by step 2) different arm of forces position, then is calculated by step 3) and obtained standard torque value.
The beneficial effects of the present invention are:
The present invention is monitored equilibrant force active position with displacement sensor and to measurement error caused by change in location
It compensates, the measurement accuracy of torque spanner calibrating instrument can be effectively improved, solve in existing torsion spanner calibrating instrument for producing
The torque sensor of raw standard torque value exports the technical problem related with equilibrant force active position.
Detailed description of the invention
Attached drawing 1 is structure front view of the invention.
Attached drawing 2 is structural side view of the invention.
Attached drawing 3 is structural perspective of the invention.
In figure: torque sensor 1, torque sensor output end mouth 11, measurement indicating meter 2, torque path port 21, position
Move access port 22, rack 3, driving mechanism 4, speed reducer 41, motor 42, displacement sensor 5, displacement sensor output port
51, equalising torque mechanism 6, torque spanner 7, equalising torque mechanism rack 61, block 62, rolled round 63, screw rod 64.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing:
As shown in figures 1 and 3, the present invention includes rack 3, torque sensor 1, displacement sensor 5, driving mechanism 4, torque
Balance mechanism 6 and measurement indicating meter 2, measurement indicating meter 2, torque sensor 1 and equalising torque mechanism 6 are installed in fixation
In in rack 3, the coaxial fixing sleeve in lantern ring end of torque spanner 7 is on torque sensor 1, the rod end coupling torque of torque spanner 7
Balance mechanism 6 controls the arm of force of torque by equalising torque mechanism 6, and 6 side of equalising torque mechanism is equipped with for detecting the arm of force
The displacement sensor 5 of length；3 bottom of rack is equipped with driving mechanism 4, and driving mechanism 4, which connects torque sensor 1 and drives, applies torsion
On square to torque spanner 7, measurement indicating meter 2 has torque path port 21 and displacement access port 22, and torque sensor is defeated
Exit port 11 is connected to the torque path port 21 of measurement indicating meter 2, displacement sensor output port 51 and measurement indicator
The displacement access port 22 of table 2 connects.
As shown in figure 3, equalising torque mechanism 6 includes equalising torque mechanism rack 61, block 62, rolled round 63 and screw rod 64,
Equalising torque mechanism rack 61 is fixedly mounted in rack 3, is mounted on balance mechanism bracket 61 to two 64 horizontal parallels of screw rod
On, block 62 is cased on screw rod 64, block 62 and screw rod 64 form screw pair, and two screw rods 64 are connect with rolled round 63,
The rod end of torque spanner 7 is fixed between the block 62 being clipped on two screw rods 64, and rotation rolled round 63 drives screw rod 64 to be rotated into
And block 62 is driven to move axially along screw rod 64, so that block 62 keeps off the different location in 7 rod end of torque spanner to realize power
The adjustment of arm.Displacement sensor 5 is parallel with screw rod 64 and is mounted near block 62, and the fixing end of displacement sensor 5 is connected to
In rack 3, mobile terminal is connected to 62 on the block of equalising torque mechanism 6, and it is axial along screw rod 64 that displacement sensor 5 detects block 62
Mobile displacement.
As shown in Fig. 2, driving mechanism 4 includes the movement transmission members of speed reducer 41 and motor 42, motor 42 is through speed reducer
41 connect with torque sensor 1.
Torque sensor, which is mounted on, to be fixed in the driving mechanism in rack, for generating torque standard value M；Driving mechanism
For applying torque to torque sensor and tested torque spanner；Displacement sensor is worked as balancing to measure when block is mobile to be moved
Distance L of the forward horizontal stand block to torque sensor center；
Specific implementation case of the invention and its implementation process are as follows:
Implementation process is:
1) torque spanner is mounted on torque spanner calibrating instrument when examining and determine, adjusts the position of balance mechanism, driving mechanism 4
Operation applies on torsion to torque sensor 1, and torque sensor 1 exports on fixed torque to the lantern ring end of torque spanner 7,
The rod end of torque spanner 7 is fixed between two pieces of blocks 62 for being clipped in the equalising torque mechanism 6；
2) block 62 is driven to move axially along screw rod 64 by rotation rolled round 63, adjustment block 62 is blocked in torque spanner 7
Rod end different location, forms different arm of force distances, is converted to torque arm length by the position that displacement sensor 5 measures；
3) it is repeatedly tested by the accurate torque spanner of standard in different arm of force positions and obtains torque sensor (1) in difference
The output valve S under the arm of force is balanced, carries out calculating available first, second weight parameter k using following formula1、k2:
Wherein, k1、k2The first, second weight parameter is respectively indicated, M indicates the standard torque value after equilibrant force position compensation,
L indicates block 62 to the torque arm length between 7 rotary shaft of torque spanner, the output valve of S expression torque sensor 1.
4) for torque spanner to be measured, even twisting moment value and displacement sensor 5 that torque sensor 1 exports are measured
Torque arm length value is input in measurement indicating meter 2, and measurement indicating meter 2 has torque to be displaced two channels, measures indicating meter
After torque and displacement transducer signal access, equilibrant force position compensation is calculated by using the following formula through amplification, AD conversion
Standard torque value afterwards:
The torque value of actual displayed in obtained standard torque value and torque spanner 7 finally can be compared realization inspection
It is fixed.
Case study on implementation:
A 500Nm torsion spanner calibrating instrument is made, structure is shown in FIG. 1 to FIG. 3, and wherein circle axis structure is selected in torque measurement
Specification be 500Nm torque sensor, export (0-2mV/V), 0.1 grade of accuracy grade；Displacement measurement selects LX-S type position
Displacement sensor, specification 1000mm export (0-5) V.
In order to which the output characteristics to torque sensor is compensated with displacement sensor, standard torsion spanner is mounted on torsion
On torque wrench calibrating instrument, test output characteristics, test result are carried out in two different equilbrium positions (L=200mm, L=600mm)
It see the table below:
| 100Nm | 200Nm | 300Nm | 400Nm | 500Nm | |
| S (L=200mm) | 0.39837mV/V | 0.79676mV/V | 1.19530mV/V | 1.59381mV/V | 1.99240mV/V |
| S (L=600mm) | 0.40059mV/V | 0.80116mV/V | 1.20187mV/V | 1.60253mV/V | 2.00328mV/V |
It is carried out after being demarcated to torque spanner calibrating instrument by the position L=600mm, obtained test data are as follows:
| 100Nm | 200Nm | 300Nm | 400Nm | 500Nm | |
| M (L=200mm) | 99.95Nm | 199.95Nm | 299.95Nm | 399.95Nm | 499.95Nm |
| M (L=600mm) | 100.55Nm | 201.05Nm | 301.60Nm | 402.15Nm | 502.75Nm |
The result shows that different equilibrant force active position torque value differences 0.5% or so before compensation.
Above-mentioned test data is substituted into formula) carry out calculating available k1、k2Approximation:
k1=0.0040174 k2=-1.62493
By torque sensor output value S, penalty coefficient k1、k2, the L (based on mm unit) that measures of displacement sensor substitute into it is public
FormulaThe torque value unrelated with equilibrant force position can be obtained.
| 100Nm | 200Nm | 300Nm | 400Nm | 500Nm | |
| S (L=200mm) | 99.95Nm | 199.95Nm | 299.95Nm | 400.00Nm | 500.00Nm |
| S (L=600mm) | 100.00Nm | 199.95Nm | 299.95Nm | 400.00Nm | 500.00Nm |
The result shows that different equilibrant force active position torque outputs are almost the same after compensation.
It can be seen that the present invention can solve in torsion spanner calibrating instrument that equilibrant force active position is different and bring error is asked
Topic, effectively increases the measurement accuracy of torque spanner calibrating instrument, has its technical effect outstanding.
Claims (7)
1. a kind of torque spanner calibrating instrument with equilibrant force position compensation, it is characterised in that: including rack (3), torque sensor
(1), displacement sensor (5), driving mechanism (4), equalising torque mechanism (6) and measurement indicating meter (2), measure indicating meter
(2), torque sensor (1) and equalising torque mechanism (6), which are respectively mounted, is fixed on rack (3), and the lantern ring end of torque spanner (7) is same
For axis fixing sleeve on torque sensor (1), the rod end coupling torque balance mechanism (6) of torque spanner (7) passes through equalising torque machine
Structure (6) controls the arm of force of torque, and equalising torque mechanism (6) side is equipped with the displacement sensor (5) for detecting torque arm length；
Rack (3) bottom is equipped with driving mechanism (4), and driving mechanism (4) connection torque sensor (1) drives application torque to pull to torsion
On hand (7), torque sensor (1) and displacement sensor (5) are connect with measurement indicating meter (2)；
Equalising torque mechanism (6) includes equalising torque mechanism rack (61), block (62), rolled round (63) and screw rod (64), torque
Balance mechanism bracket (61) is fixedly mounted on rack (3), is mounted on balance mechanism bracket to two screw rod (64) horizontal parallels
(61) it on, is cased on screw rod (64) block (62), block (62) and screw rod (64) form screw pair, and two screw rods (64) are equal
It is connect with rolled round (63), the rod end of torque spanner (7) is fixed between the block (62) being clipped on two screw rods (64), and rotation is shaken
It takes turns (63) to drive screw rod (64) to rotate and then block (62) is driven to move axially along screw rod (64), so that block (62) gear is in torsion
The different location of spanner (7) rod end is to realize the adjustment of the arm of force.
2. a kind of torque spanner calibrating instrument with equilibrant force position compensation according to claim 1, it is characterised in that: described
Displacement sensor (5) it is parallel with screw rod (64) and be mounted near block (62), the fixing end of displacement sensor (5) is connected to
In rack (3), mobile terminal is connected on the block of equalising torque mechanism (6) (62), and displacement sensor (5) detects block (62) edge
The displacement of screw rod (64) axial movement.
3. a kind of torque spanner calibrating instrument with equilibrant force position compensation according to claim 1, it is characterised in that: described
Driving mechanism (4) include speed reducer (41) and motor (42) movement transmission members, motor (42) through speed reducer (41) and turn round
Square sensor (1) connection.
4. a kind of torque spanner calibrating instrument with equilibrant force position compensation according to claim 1, it is characterised in that: described
Measurement indicating meter (2) have torque path port (21) and be displaced access port (22), torque sensor output end mouth
(11) it is connected to the torque path port (21) of measurement indicating meter (2), displacement sensor output port (51) and measurement indicate
The displacement access port (22) of instrument (2) connects.
5. being applied to the equilibrant force position compensation method of any calibrating instrument of Claims 1 to 4, it is characterised in that:
1) driving mechanism (4) is run, and is applied on torsion to torque sensor (1), and the fixed torque of torque sensor (1) output arrives
On torque spanner (7), the rod end of torque spanner (7) be fixed be clipped in the equalising torque mechanism (6) two pieces of blocks (62) it
Between；
2) block (62) are driven to move axially along screw rod (64) by rotation rolled round (63), adjustment block (62) is blocked in torsion and pulls
Hand (7) rod end different location, forms different arm of force distances, is converted to torque arm length by the position that displacement sensor (5) measures；
3) the torque arm length value that the even twisting moment value of torque sensor (1) output and displacement sensor (5) measure is input to survey
It measures in indicating meter (2), the standard torque value after equilibrant force position compensation is calculated after amplification, AD conversion, to complete
To the equilibrant force position compensation of torque spanner (7) calibrating.
6. a kind of equilibrant force position compensation method of torque spanner calibrating instrument according to claim 5, it is characterised in that: institute
The calculating of measurement indicating meter (2) the Plays torque value stated uses following formula:
Wherein, k1、k2The first, second weight parameter is respectively indicated, M indicates the standard torque value after equilibrant force position compensation, L table
Show block (62) to the torque arm length between torque spanner (7) rotary shaft, the output valve of S expression torque sensor (1).
7. a kind of equilibrant force position compensation method of torque spanner calibrating instrument according to claim 5, it is characterised in that: institute
That states is repeatedly tested by step 2) different arm of forces position, then is calculated by step 3) and obtained the standard unrelated with equilibrant force position
Torque value.
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| CN201610873294.8A CN106500907B (en) | 2016-09-30 | 2016-09-30 | It is a kind of with the torque spanner calibrating instrument of equilibrant force position compensation and its compensation method |
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| CN201610873294.8A CN106500907B (en) | 2016-09-30 | 2016-09-30 | It is a kind of with the torque spanner calibrating instrument of equilibrant force position compensation and its compensation method |
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| CN106500907B true CN106500907B (en) | 2019-07-09 |
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| CN112372566A (en) * | 2020-11-25 | 2021-02-19 | 安徽兴宇轨道装备有限公司 | Torque wrench detection device |
| CN113029562B (en) * | 2021-03-17 | 2024-07-23 | 中国航发动力股份有限公司 | Detection method and detection device for load state of screw transmission mechanism |
| CN113155359A (en) * | 2021-04-03 | 2021-07-23 | 河南省计量科学研究院 | Calibrating device for bolt and nut torque connection simulator |
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