CN102023069A - Tightening machine checker - Google Patents
Tightening machine checker Download PDFInfo
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- CN102023069A CN102023069A CN 201010529426 CN201010529426A CN102023069A CN 102023069 A CN102023069 A CN 102023069A CN 201010529426 CN201010529426 CN 201010529426 CN 201010529426 A CN201010529426 A CN 201010529426A CN 102023069 A CN102023069 A CN 102023069A
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Abstract
The invention discloses a tightening machine checker which comprises a torque sensor and a display, wherein, one end of the torque sensor is provided with a square male joint, and the other end of the torque sensor is provided with a square female joint; and the display comprises a signal amplification filter circuit connected with the signal output end of the torque sensor, an A/D (analog/digital) conversion circuit connected with the signal amplification filter circuit, a digital signal processing device used for carrying out digital filtering, peak value computation and peak value processing on a digital signal, and a display module used for displaying the torque after the peak value processing. In the invention, the square male joint and the square female are respectively arranged at the two ends of the existing torque sensor, thus the two ends of the existing torque sensor can be respectively connected with a bolt and the output shaft of a tightening machine; the torque simulated electric signal detected by the torque sensor is converted into a digital signal by the display; and the digital signal is processed by the digital signal processing device and is displayed on the display module. In the invention, the angle check function without practical value of the existing checker is omitted, thus not only simplifying the structure, and lowering the cost.
Description
Technical field
The present invention relates to the tightening machine technical field, more particularly, relate to a kind of tightening machine tester.
Background technology
Tightening machine is widely-used in manufacturing enterprises such as automobile, engine, plant equipment, for guaranteeing it accurately and reliably, needs regularly with the tightening machine tester it to be calibrated, and can export correct screw-down torque and angle to guarantee tightening machine.
At present, the tightening machine tester is to be provided by tightening machine manufacturer of external a few family substantially, manufacturing cost height, fetch long price (as covering 1000N.m range tightening machine tester price more than 200,000 yuan), use inconvenient (needing AC power), inconvenient maintenance (need send foreign-made factory).Because its function is more, so structure is complicated, and the verification effect of the parts that some function is relied on is unsatisfactory, the parts of for example verification angle in actual alignment, are movable owing to tighten arbor, very difficult with the tester collimation angle, even can't verification go out correct angular error.
Need badly at present a kind of simple in structure, low-cost tightening machine tester.
Summary of the invention
In view of this, the invention provides a kind of tightening machine tester, simplify its structure, reduce the purpose of its cost to reach.
In order to achieve the above object, the embodiment of the invention provides following technical scheme:
A kind of tightening machine tester comprises:
Torque sensor, an end of this torque sensor is provided with cubic male joint, and the other end is provided with cubic female joint;
Display instrument, it comprises: the signal amplification circuit filter that links to each other with the signal wire of described torque sensor, the A/D change-over circuit that links to each other with described signal amplification circuit filter, digital signal is carried out the digital signal processing device that digital filtering, peak value calculating and peak value are handled, show display module through the moment of torsion after the peak value processing.
Preferably, in above-mentioned tightening machine tester, be equipped with the pin hole that the supply and marketing nail passes in described cubic male joint and the described cubic female joint;
Described cubic female joint is provided with gain being provided with on the position of pin hole along its circumferencial direction.
Preferably, in above-mentioned tightening machine tester, also comprise web member, an end of this web member is and the adaptive female joint of cubic male joint of described torque sensor that the other end is the male joint adaptive with sleeve;
Perhaps, an end of this web member is and the adaptive male joint of cubic female joint of described torque sensor that the other end is the female joint adaptive with the output shaft of tightening machine.
Preferably, in above-mentioned tightening machine tester, be equipped with the pin hole that the supply and marketing nail passes in male joint on the described web member and the described female joint;
Described female joint is provided with gain being provided with on the position of pin hole along its circumferencial direction.
Preferably, in above-mentioned tightening machine tester, also comprise refill-unit, the length of this refill-unit equals the length of torque sensor, one end of this refill-unit have with tightening machine on output shaft or the adaptive cubic female joint of web member male joint, the other end has and sleeve or the adaptive male joint of web member female joint.
Preferably, in above-mentioned tightening machine tester, be equipped with the pin hole that the supply and marketing nail passes in cubic male joint on the described refill-unit and the cubic female joint;
Cubic female joint is provided with gain being provided with on the position of pin hole along its circumferencial direction on the described refill-unit.
Preferably, in above-mentioned tightening machine tester, the power supply of this tightening machine tester is a lithium battery.
Preferably, in above-mentioned tightening machine tester, described digital signal processing device comprises:
Judge that display mode is the display mode judging unit that peak value shows or shows continuously;
First processing unit of work when display mode is demonstration continuously;
Second processing unit of work when display mode is the peak value demonstration, described first processing unit links to each other with two output terminals of described display mode judging unit respectively with second processing unit.
Preferably, in above-mentioned tightening machine tester, described first processing unit comprises:
The filter unit that links to each other with the output terminal of described display mode judging unit;
What link to each other with the output terminal of described filter unit first subtracts coefficient module;
With the first multiplying factor module that described first output terminal that subtracts coefficient module links to each other, the output terminal of this first multiplying factor module links to each other with described display module.
Preferably, in above-mentioned tightening machine tester, described second processing unit comprises:
Judge true peak whether greater than the judging unit that resets of preset value, this judging unit that resets links to each other with the output terminal of described display mode judging unit;
Second subtract coefficient module what true peak was worked during greater than preset value;
The peak-peak output unit of output peak-peak at every turn tightening, this peak-peak output unit links to each other with described second output terminal that subtracts coefficient module;
The second multiplying factor module that links to each other with the output terminal of described peak-peak output unit, the output terminal of this second multiplying factor module links to each other with described display module.
As shown from the above technical solution, the tightening machine tester that the embodiment of the invention provides is by at its two ends cubic male joint and cubic female joint being set on the basis that has torque sensor at home now, so that it can link to each other with the output shaft of bolt and tightening machine respectively.By display instrument the moment of torsion electric signal that torque sensor detects is carried out filter amplifying processing, and be digital signal, after by the digital signal processing device in it digital signal being handled, be presented on the display module analog signal conversion.The present invention has cancelled the angle verifying function that existing tester does not have practical value, not only simplify the structure, and reduced cost, manufacturing cost only be the import tester 1/10 in.
Description of drawings
The structural representation of the tightening machine tester that Fig. 1 provides for the embodiment of the invention;
The measurement process flow diagram of the tightening machine tester that Fig. 2 provides for the embodiment of the invention;
The processing flow chart of the digital signal processing device that Fig. 3 provides for the embodiment of the invention;
The structural representation of the torque sensor that Fig. 4 provides for the embodiment of the invention;
The structural representation of the web member that provides in the embodiment of the invention is provided Fig. 5;
The structural representation of the refill-unit that provides in the embodiment of the invention is provided Fig. 6.
Embodiment
The invention discloses a kind of tightening machine tester, simplify its structure, reduce the purpose of its cost to reach.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of protection of the invention.
See also Fig. 1, the structural representation of the tightening machine tester that Fig. 1 provides for the embodiment of the invention.
Tightening machine tester provided by the invention comprises: torque sensor 2 and display instrument 1, and wherein an end of torque sensor 2 is provided with cubic male joint 21, and the other end is provided with cubic female joint 22.Display instrument 1 comprises: the signal amplification circuit filter that links to each other with the signal output part of described torque sensor, the A/D change-over circuit that links to each other with described signal amplification circuit filter, digital signal is carried out the digital signal processing device that digital filtering, peak value calculating and peak value are handled, show display module through the moment of torsion after the peak value processing.
The tightening machine tester that the embodiment of the invention provides is by at its two ends cubic male joint 21 and cubic female joint 22 being set on the basis that has torque sensor at home now, so that it can link to each other with the output shaft of bolt and tightening machine respectively.By display instrument the moment of torsion electric signal that torque sensor detects is carried out filter amplifying processing, and be digital signal analog signal conversion, and after by the digital signal processing device in it digital signal being handled, and be presented on the display module.The present invention has cancelled the angle verifying function that existing tester does not have practical value, in the actual angle calibration, is movable owing to tighten arbor, and is very difficult with the tester collimation angle.Can set and tighten axle idle running, behind more revolution (more than 20 commentaries on classics), it is poor to take measurement of an angle with range estimation or protractor.Cancel no practical angle verifying function, not only simplify the structure, and reduced cost, manufacturing cost only be the import tester 1/10 in.
See also Fig. 2, the measurement process flow diagram of the tightening machine tester that Fig. 2 provides for the embodiment of the invention.
The checking process of tightening machine tester provided by the invention comprises the steps:
The output torque of tightening machine detects by torque sensor 2, link to each other with the output shaft of tightening machine by cubic female joint 22 torque sensor 2, cubic male joint 21 is linked to each other with sleeve on the bolt, thereby can will measure the moment of torsion of tightening machine output, and export to signal amplification circuit filter with the form of electric signal.
The amplification of simulating signal and filtering realize by signal amplification circuit filter, by signal amplification circuit filter the simulating signal of torque sensor 2 outputs are amplified and filtering.
Is digital signal by the A/D change-over circuit with analog signal conversion.
By digital signal processing device above-mentioned digital signal is carried out obtaining the actual torque value after filtering, calculating, the peak value processing.
On display module, show through the actual torque value that obtains after the digital signal processing device processing above-mentioned.
See also Fig. 4, the structural representation of the torque sensor that Fig. 4 provides for the embodiment of the invention.
Be equipped with the pin hole (211,221) that the supply and marketing nail passes in four directions male joint 21 and the described cubic female joint 22.Also be provided with pin hole on the output shaft of corresponding sleeve and tightening machine, passing pin hole by pin can be connected torque sensor respectively with sleeve and tightening machine are stable.
Four directions female joint 22 is on the position that is provided with pin hole 221, be provided with gain 222 along its circumferencial direction, after pin passes above-mentioned pin hole, can be set on gain 222 positions by a rubber sleeve, the two ends that rubber sleeve is about to pin are fastened in the rubber sleeve, avoid pin to skid off.
See also Fig. 5, the structural representation of the web member that provides in the embodiment of the invention is provided Fig. 5.
The present invention can also comprise web member 3, this web member 3 can link to each other with torque sensor 2, the size of its male joint 31 and female joint 32 can be for multiple, connect web member 3 respectively by two ends, can make that torque sensor 2 can be adaptive with the tightening machine output shaft of each size at torque sensor 2.Equally, this web member 3 can be connected with sleeve, and the size of its male joint 31 and female joint 32 can by serial connection web member 3 on sleeve, can make torque sensor to be connected with the sleeve of each size, to adapt to the bolt of each size for multiple.
Be equipped with the pin hole (311,321) that the supply and marketing nail passes in male joint 31 on the web member 3 and the described female joint 32, passing pin hole by pin can be connected web member 3 respectively with torque sensor and sleeve are stable.
Female joint 32 is provided with gain 322 being provided with on the position of pin hole along its circumferencial direction.After pin passes above-mentioned pin hole, can be set on gain 322 positions by a rubber sleeve, the two ends that rubber sleeve is about to pin are fastened in the rubber sleeve, avoid pin to skid off.
See also Fig. 6, the structural representation of the refill-unit that provides in the embodiment of the invention is provided Fig. 6.
Torque sensor provided by the invention refill-unit 4, the length of this refill-unit 4 equals the length of torque sensor 2, one end of this refill-unit 4 have with tightening machine on the adaptive cubic female joint 42 of output shaft, the other end has the cubic male joint 41 adaptive with sleeve.
Because the output shaft of tightening machine can be for a plurality of, if only need measure the moment of torsion of one of them or several output shafts the time, refill-unit 4 provided by the invention can be replaced torque sensor 2, connects need not measure on the output shaft of moment of torsion.Consistent in order to make with the length of torque sensor and web member 3, the torque sensor 2 after need making the length sum of refill-unit 4 after the assembling and web member 3 equal to assemble and the length sum of web member 3.
Be equipped with the pin hole (411,421) that the supply and marketing nail passes in cubic male joint 41 on the refill-unit 4 and the described cubic female joint 42, passing pin hole by pin can be connected with the output shaft of tightening machine refill-unit 4 respectively with sleeve is stable.
Cubic female joint 42 on the refill-unit 4 is provided with gain 422 along its circumferencial direction on the position that is provided with pin hole 421.After pin passes above-mentioned pin hole, can be set on gain 422 positions by a rubber sleeve, the two ends that rubber sleeve is about to pin are fastened in the rubber sleeve, avoid pin to skid off.
The each several part power supply of tightening machine tester provided by the invention is supplied with through the voltage transformation module conversion by built-in lithium battery.Verification range, unit, peak value/continuous display mode can be set as required.The present invention integrates multirange (instrument at most can 4 ranges), for example can set two kinds of ranges of 1000N.m and 300N.m, and N.m and lb.ft two units are optional, continuously/and two kinds of moment of torsion display modes of peak value are optional.The single-piece manufacturing cost is lower than 1.8 ten thousand yuan, and is economical and practical; On-line calibration need not alternating current, behind the full charge, can use continuously 4 hours.
See also Fig. 3, the processing flow chart of the digital signal processing device that Fig. 3 provides for the embodiment of the invention.
Digital signal processing device of the present invention comprises:
Judge that display mode is the display mode judging unit that peak value shows or shows continuously;
First processing unit of work when display mode is demonstration continuously;
Second processing unit of work when display mode is the peak value demonstration, described first processing unit links to each other with two output terminals of described display mode judging unit respectively with second processing unit.Promptly when display mode is chosen as continuous demonstration in advance, the first processing unit work; When display mode is chosen as the peak value demonstration in advance, the second processing unit work.Show that continuously being display module shows detected torque value in real time, the peak value demonstration is display module in tightening at every turn, shows maximum torque value.
First processing unit comprises:
The filter unit that links to each other with the output terminal of described display mode judging unit;
What link to each other with the output terminal of described filter unit first subtracts coefficient module;
With the first multiplying factor module that described first output terminal that subtracts coefficient module links to each other, the output terminal of this first multiplying factor module links to each other with described display module.When rotation shows torque value in real time, digital signal filter need be handled, call first then and subtract coefficient module, handle to subtract 800H (be sexadecimal, be equivalent to the decimal system 2048) in the present embodiment.The effect of this processing make data zero migration 2048 after the filtering (in the present embodiment, employing be 12 A/D conversion chips, the A/D output area is 0～4096, its 48～4048 corresponding anti-, positive torque range, 2048 corresponding zero moments of torsion).Call the first multiplying factor module afterwards, carry out multiplying factor and handle.The effect of this processing is (as-1000N.m～1000N.m range check instrument, during 1000N.m, to subtract that data are 2000 after the coefficient processing with subtracting after the coefficient processing data recovery to the actual torque value, take advantage of 0.5, restoring is 1000N.m, takes advantage of 0.368781, restores to be 738LB.FT).Call display module again, torque value is shown.Get back to acquisition module at last, carry out circulation next time.
Second processing unit comprises:
Judge true peak whether greater than the judging unit that resets of preset value, this judging unit that resets links to each other with the output terminal of described display mode judging unit; When the judgment unit judges that resets goes out peak value less than 6.4% of full scale value, then this peak value is automatically reset.If peak value greater than 6.4% of full scale value, then calls second and subtracts coefficient module, handle to subtract 800H (be sexadecimal, be equivalent to the decimal system 2048) in the present embodiment.The effect of this processing subtracts coefficient module with first.
The peak-peak output unit of output peak-peak at every turn tightening, this peak-peak output unit links to each other with described second output terminal that subtracts coefficient module.
The second multiplying factor module that links to each other with the output terminal of described peak-peak output unit, the output terminal of this second multiplying factor module links to each other with described display module.The second multiplying factor module effect is with the first multiplying factor module in the present embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a tightening machine tester is characterized in that, comprising:
Torque sensor, an end of this torque sensor is provided with cubic male joint, and the other end is provided with cubic female joint;
Display instrument, it comprises: the signal amplification circuit filter that links to each other with the signal output part of described torque sensor, the A/D change-over circuit that links to each other with described signal amplification circuit filter, digital signal is carried out the digital signal processing device that digital filtering, peak value calculating and peak value are handled, show display module through the moment of torsion after the peak value processing.
2. tightening machine tester according to claim 1 is characterized in that, is equipped with the pin hole that the supply and marketing nail passes in described cubic male joint and the described cubic female joint;
Described cubic female joint is provided with gain being provided with on the position of pin hole along its circumferencial direction.
3. tightening machine tester according to claim 1 is characterized in that, also comprises web member, and an end of this web member is and the adaptive female joint of cubic male joint of described torque sensor that the other end is the male joint adaptive with sleeve;
Perhaps, an end of this web member is and the adaptive male joint of cubic female joint of described torque sensor that the other end is the female joint adaptive with the output shaft of tightening machine.
4. tightening machine tester according to claim 3 is characterized in that, is equipped with the pin hole that the supply and marketing nail passes in male joint on the described web member and the described female joint;
Described female joint is provided with gain being provided with on the position of pin hole along its circumferencial direction.
5. according to claim 3 or 4 described tightening machine testers, it is characterized in that, also comprise refill-unit, the length of this refill-unit equals the length of torque sensor, one end of this refill-unit have with tightening machine on output shaft or the adaptive cubic female joint of male joint of web member, the other end has the male joint adaptive with the female joint of sleeve or web member.
6. tightening machine tester according to claim 5 is characterized in that, is equipped with the pin hole that the supply and marketing nail passes in cubic male joint on the described refill-unit and the cubic female joint;
Cubic female joint is provided with gain being provided with on the position of pin hole along its circumferencial direction on the described refill-unit.
7. tightening machine tester according to claim 1 is characterized in that, the power supply of this tightening machine tester is a lithium battery.
8. tightening machine tester according to claim 1 is characterized in that, described digital signal processing device comprises:
Judge that display mode is the display mode judging unit that peak value shows or shows continuously;
First processing unit of work when display mode is demonstration continuously;
Second processing unit of work when display mode is the peak value demonstration, described first processing unit links to each other with two output terminals of described display mode judging unit respectively with second processing unit.
9. tightening machine tester according to claim 8 is characterized in that, described first processing unit comprises:
The filter unit that links to each other with the output terminal of described display mode judging unit;
What link to each other with the output terminal of described filter unit first subtracts coefficient module;
With the first multiplying factor module that described first output terminal that subtracts coefficient module links to each other, the output terminal of this first multiplying factor module links to each other with described display module.
10. according to Claim 8 or 9 described tightening machine testers, it is characterized in that described second processing unit comprises:
Judge true peak whether greater than the judging unit that resets of preset value, this judging unit that resets links to each other with the output terminal of described display mode judging unit;
Second subtract coefficient module what true peak was worked during greater than preset value;
The peak-peak output unit of output peak-peak at every turn tightening, this peak-peak output unit links to each other with described second output terminal that subtracts coefficient module;
The second multiplying factor module that links to each other with the output terminal of described peak-peak output unit, the output terminal of this second multiplying factor module links to each other with described display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010529426 CN102023069B (en) | 2010-11-02 | 2010-11-02 | Tightening machine checker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010529426 CN102023069B (en) | 2010-11-02 | 2010-11-02 | Tightening machine checker |
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| CN102023069A true CN102023069A (en) | 2011-04-20 |
| CN102023069B CN102023069B (en) | 2012-08-22 |
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| CN 201010529426 Active CN102023069B (en) | 2010-11-02 | 2010-11-02 | Tightening machine checker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552015A (en) * | 2013-11-15 | 2014-02-05 | 上汽通用五菱汽车股份有限公司 | Test fixture for tightening torque of automotive gear shift handle head |
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2010
- 2010-11-02 CN CN 201010529426 patent/CN102023069B/en active Active
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| CN2074910U (en) * | 1990-03-12 | 1991-04-10 | 韩津生 | Digital display torque measuring instrument |
| US5502883A (en) * | 1993-06-04 | 1996-04-02 | Fujikin Incorporated | Method of tightening threaded member |
| JP2003121275A (en) * | 2001-10-16 | 2003-04-23 | Hitachi Unisia Automotive Ltd | Torque sensor |
| CN201289414Y (en) * | 2008-11-17 | 2009-08-12 | 北京卫星环境工程研究所 | Adapter for measuring moment of electric connector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552015A (en) * | 2013-11-15 | 2014-02-05 | 上汽通用五菱汽车股份有限公司 | Test fixture for tightening torque of automotive gear shift handle head |
| CN103552015B (en) * | 2013-11-15 | 2015-05-20 | 上汽通用五菱汽车股份有限公司 | Test fixture for tightening torque of automotive gear shift handle head |
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| Publication number | Publication date |
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| CN102023069B (en) | 2012-08-22 |
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