CN1066824C - Test method and device for backlash of driving chain - Google Patents
Test method and device for backlash of driving chain Download PDFInfo
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- CN1066824C CN1066824C CN94112222A CN94112222A CN1066824C CN 1066824 C CN1066824 C CN 1066824C CN 94112222 A CN94112222 A CN 94112222A CN 94112222 A CN94112222 A CN 94112222A CN 1066824 C CN1066824 C CN 1066824C
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Abstract
The present invention relates to a dynamic backlash detecting method and a device for detecting the running quality of a transmission chain. When a given phase signal within the round of forward and backward rotation of one end shaft of the transmission chain is measured and taken, the forward and backward rotating phase difference value corresponding to the given phase signal of the other end shaft of the transmission chain is measured. A backlash value is converted by the forward and backward rotating phase difference value. The detecting device is composed of a circular grating signal sending head, a gating circuit, a reversible counter, a computer, etc., wherein the circular grating signal sending head is respectively arranged on both end shafts of the transmission chain. The detecting method has the advantages of high precision of the measured backlash value and high detection work efficiency.
Description
The present invention relates to a kind of backlash detection method and device that is used for detection of gear driving-chain running quality, particularly a kind of dynamic backlash detection method and device.
Driving-chain relative phase inconsistent between input end and the output terminal when rotating is called the backlash of driving-chain.The backlash of gear transmission chain is to be made of factors such as the distortion of running clearance, bearing clearance, the gear teeth and axle and oil film thicknesses, generally based on running clearance.Measure backlash of driving chain, adopt the static measurement method usually.As between the pair of meshing flank of tooth, inserting clearance gauge, according to the convert backlash of driving-chain of the thickness of clearance gauge.And for example, an end axle of fixed conveyor chain forward and reversely applies certain moment of torsion to driving-chain other end axle, record forward and reverse the executing of this end axle and turn round the phase difference value that produces, converse backlash (the 20-94 page or leaf is to the 20-97 page or leaf for gear handbook volume two, China Machine Press's in November, 90 publication).The resulting null return value of this class measuring method does not relate to the influence of factors such as bearing clearance, between cog operation friction power, bearing friction power, oil seal ring friction force to backlash fully, so have certain error.
The object of the present invention is to provide a kind of dynamic backlash detection method and device of driving-chain, can accurately detect the backlash of driving-chain fast.
For achieving the above object, the present invention adopts following technical scheme: this backlash of driving chain detection method adopts dynamic testing method, be characterized in: must make forward and reverse each rotation of driving-chain during measurement once, just change earlier during each the measurement, receiving can slow down behind the given phase signal stops, change counter-rotating into, finish after for the second time receiving given phase signal, and measuring the rotating phase difference value of driving-chain other end axle when giving phase bit corresponding to this, the rotating phase difference value converses null return value thus.Owing to measure in dynamically, measured null return value really reflects the backlash in the driving-chain running, the degree of accuracy height, and detect fast the detection efficiency height.
Generally in speed reduction gearing, measuring the driving-chain output shaft is the given phase signal of slow-speed shaft, and measures the rotating phase difference value of driving-chain input shaft.This rotating phase difference value is scaled angle value, again divided by the ratio of gear of driving-chain, promptly obtains the backlash angle value of output shaft.
In order accurately to measure given phase signal and rotating phase difference value fast, can adopt grating head or the magnetic grid head of posting a letter of posting a letter to measure the given phase signal of output shaft, and cooperate grating head or the magnetic grid rotating phase difference value that measures input shaft of posting a letter of posting a letter with frequency multiplier and up-down counter.The given phase signal of output shaft can be certain given phase value of output shaft, as zero phase value.When measuring the given phase signal of output shaft, during as zero phase value, can adopt a gate circuit to control, immediately read the rotating phase change value of input shaft by a up-down counter, that is to say when driving-chain is just changeing by zero phase, gate circuit is opened in forward position by the zero phase pulse signal, make grating on the input shaft post a letter the pulse signal that hair goes out of head or magnetic grid of posting a letter after frequency multiplication, deliver to up-down counter and carry out " subtracting " counting, after driving-chain stops, " subtracting " counting finishes, after changing counter-rotating into, up-down counter carries out " adding " counting, until for the second time by zero phase the time, to close gate circuit by the back edge of zero phase pulse signal and stop " adding " counting, the difference of " adding " counting and " subtracting " counting is represented the rotating phase difference value of input shaft.Can also the input shaft rotating phase difference value that up-down counter reads be conversed null return value with computing machine.
Use the pick-up unit of the dynamic backlash detection method of this driving-chain design to be: include that the round grating that is installed on the driving-chain output shaft is posted a letter and input shaft on the round grating head of posting a letter.Be characterized in: the post a letter output of head of round grating on head and the output shaft of posting a letter of the round grating on the input shaft is connected the input of a gate circuit, the input of a up-down counter of output connection of gate circuit, the input of a computing machine of output connection of up-down counter.An indexing mechanism can be housed on output shaft, on indexing mechanism, load onto to stack the round grating head of posting a letter again.Indexing mechanism be used to change output shaft and circle grating post a letter between the head relative position and change the place phase place of tested backlash.The post a letter output of head of round grating on the input shaft can connect the input of gate circuit through frequency multiplier.Add frequency multiplier and can reduce pulse equivalency raising measuring accuracy.On the input shaft of driving-chain, can put an actuator, drive the forward and reverse running of driving-chain by actuator by motor.Also can utilize the original drive unit of driving-chain to drive the forward and reverse running of driving-chain.Its principle of work is: the head of posting a letter of the round grating on the input shaft records signal, become " subtracting " and " adding " two road pulse signal in-gate circuits of the forward and reverse running of corresponding driving-chain after the frequency multiplication through frequency multiplier in addition, measure the zero signal in-gate circuit being superimposed on round grating on the indexing mechanism head of posting a letter on the output shaft, zero signal is in order to logical gate, thereby control " subtracts " and " adding " pulse signal quantity by gate circuit, read and the difference of " subtracting " and " adding " pulse signal quantity by gate circuit by up-down counter, converse the backlash angle value by computing machine at last.Total system is resetted by computer control by the operator before detecting next time.
The present invention has conspicuous remarkable advantage compared with prior art: because the present invention adopts dynamic measuring method, and the true null return value in the time of recording the driving-chain running; Come the rotating phase difference value of control detection input shaft with the given phase signal of output shaft, draw single-point location null return value, convert easy and precision is high.This pick-up unit adopt optical detection device, electron device and little process chip, efficiency of measurement height, easy, degree of accuracy is also high.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the block diagram of one embodiment of the invention.
Fig. 2 is the block diagram of gate circuit.
Fig. 3 is the circuit theory diagrams of gate circuit.
An optimum implementation of the present invention is: referring to Fig. 1, the dynamic backlash detection method of this driving-chain is: with circle grating the 7 zero phase signals that measure driving-chain 4 output shafts 5 of posting a letter, with circle grating the 1 rotating phase change value that measures driving-chain 4 input shafts 3 of posting a letter, utilize a gate circuit 10 to control, read the rotating phase difference value of input shaft 3 by a up-down counter 11, the input shaft 3 rotating phase difference values that read are conversed null return value by computing machine 8.
Use a pick-up unit of above-mentioned detection method design to be: on driving-chain 4 output shafts 5, an indexing mechanism 6 to be housed referring to Fig. 1, on indexing mechanism 6, to load onto to stack round grating again and post a letter 7.Actuator 2 and circle grating are housed on input shaft 3 post a letter 1.Post a letter 7 the output of circle grating connects the input of gate circuit 10, and post a letter 1 the output of circle grating connects the input of frequency multiplier 15, and " adding " pulse signal path 13 of frequency multiplier 15 is connected the input of gate circuit 10 with " subtracting " pulse signal path 14." adding " pulse signal output 9 of gate circuit 10 is connected the input of up-down counter 11 with " subtracting " pulse signal output 12, the output of up-down counter 11 connects the input of computing machine 8.The reset signal output terminal of computing machine 8 connects the reset signal input end of gate circuit 10 and up-down counter 11.
Referring to Fig. 2, above-mentioned gate circuit 10 by reshaper 16, secondary swing to isolator 17, monostable circuit 18, trigger flip-flop 19, with door 20 and 21 or door 22, monostable circuit 23, rejection gate 24, d type flip flop 25 and monostable circuit 26 constitute.Referring to Fig. 3, above-mentioned gate circuit 10 is made up of 2 MC14538 type monostable circuits, 1 MC14013 type double D trigger, 1 MC14011 type four Sheffer stroke gate, 1 MC14001 type four nor gate, 1 MC14081 type four and door, 1 MC14071 type four or door, five resistance R 1, R2, R3, R4, R5 and five capacitor C 1, C2, C3, C4, C5.The principle of work of gate circuit 10 is as follows: all controlled by trigger flip-flop 19 with door 20 and 21.When measuring beginning, the operator resets instrument, and reset signal process or door 22 reset trigger flip-flop 19, and d type flip flop 25 also is reset simultaneously, and gate circuit is closed.By the time round grating is posted a letter and 7 is sent zero signal here, become single rectangular pulse signal through reshaper 16, be divided into two-way again, one the tunnel delivers to monostable circuit 18 through secondary paraphase isolator 17, and when the arrival of the forward position of zero pulse signal, send pulse enable signal trigger flip-flop 19 and overturn, open with door 20 and 21, subtract the counting that afterwards adds earlier; 25 upsets of pulse enable signal d type flip flop are sent through another monostable circuit 26 in another road, thereby rejection gate 24 is closed, make the back edge (negative edge) of first zero pulse signal can not pass through rejection gate 24, therefore the back edge of first zero pulse signal just can not make monostable circuit 23 be used for closing the pulse signal of steady state trigger 19, make with door 20 and 21 and still be held open state, by the time the pulse signal forward position of second zero pulse signal is come then, d type flip flop 25 overturns once more, open rejection gate 24, by the time the back edge (negative edge) of second zero pulse signal is come then, can be by rejection gate 24, become positive transition through paraphase, make monostable circuit 23 effects, send out 19 upsets of pulse enable signal trigger flip-flop, close and door 20 and 21.Computing machine 8 is by the input state of parallel input port test reshaper 16, closes the negative edge that back computing machine 8 predicted second zero pulse signal at gate circuit and passes through, and program enters data processing, tries to achieve the measurement result of backlash and shows.In addition, for the first time zero pulse signal rising edge and for the second time zero pulse signal negative edge be same hopping edge, but have the hysteresis that causes by instrument threshold voltage value and produce electric backlash amount.So, in this pick-up unit, measure this electric backlash amount earlier, and, from the backlash of driving chain measured value, deduct this electric backlash amount input computer program, make measurement result more accurate.
Claims (9)
1. dynamic backlash detection method that is used to detect driving-chain running quality, each rotates once must to make the driving-chain rotating when it is characterized in that measuring, successively secondary measures the same given phase signal of driving-chain (4) one end axles (3 or 5) in 0-360 degree scope, and the rotating phase difference value when measuring swivel-chain (4) other end axle (5 or 3) corresponding to this given phase signal, the rotating phase difference value converses and is positioned at this dynamic null return value to the phase bit place thus.
2. dynamic backlash detection method according to claim 1, it is characterized in that speed reduction gearing, measure the given phase signal of driving-chain (4) output shaft (5), thereby measure the rotating phase difference value of driving-chain (4) input shaft (3) when giving phase bit corresponding to this.
3. dynamic backlash detection method according to claim 2 is characterized in that measuring the rotating phase change value of the given phase signal and the input shaft (3) of output shaft (5) with grating head (7,1) or the magnetic grid head of posting a letter of posting a letter.
4. dynamic backlash detection method according to claim 3, it is characterized in that controlling with a gate circuit (10) that can obtain same given phase signal when the rotating, this gate circuit can use the same hopping edge of the pulse signal of reflection locus, promptly when just changeing, use the pulse signal forward position, edge behind the use pulse signal when counter-rotating.When measuring the given phase signal of output shaft (5), cooperate input shaft (3) to go up the grating head (1) of posting a letter by a up-down counter (11) and read the rotating phase difference value of input shaft (3).
5. dynamic backlash detection method according to claim 4 is characterized in that with computing machine (8) input shaft (3) the rotating phase difference value that reads being conversed null return value, and utilizes computer program to eliminate the electric backlash amount of gate circuit (10).
6. one kind for implementing the custom-designed pick-up unit of dynamic backlash detection method as claimed in claim 1, comprise that the round grating that is installed on driving-chain (4) output shaft (5) head (7) and the round grating on the input shaft (3) head (1) of posting a letter of posting a letter is characterized in that the post a letter output of (1) of (7) and the round grating on the input shaft (3) of posting a letter of round grating on the output shaft (5) is connected the input of a gate circuit (10), the output of gate circuit (10) connects the input of a up-down counter (11), and the output of up-down counter (11) connects the input of a computing machine (8).
7. pick-up unit according to claim 6 is characterized in that being equipped with on the output shaft (5) indexing mechanism (6), goes up stack ground at indexing mechanism (6) again and loads onto a round grating post a letter (7).
8. pick-up unit according to claim 6 is characterized in that the post a letter output of head (1) of round grating on the input shaft (3) connects the input of gate circuit (10) through a frequency multiplier (15).
9. pick-up unit according to claim 6 is characterized in that gate circuit (10) is made up of with door, a slice MC14071 type four or door, five resistance R 1, R2, R3, R4, R5 and five capacitor C 1, C2, C3, C4, C5 2 MC14538 type monostable circuits, a slice MC14013 type double D trigger, a slice MC14011 type four Sheffer stroke gates, a slice MC14001 type four nor gate, a slice MC14081 type four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94112222A CN1066824C (en) | 1994-07-11 | 1994-07-11 | Test method and device for backlash of driving chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94112222A CN1066824C (en) | 1994-07-11 | 1994-07-11 | Test method and device for backlash of driving chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1115026A CN1115026A (en) | 1996-01-17 |
| CN1066824C true CN1066824C (en) | 2001-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94112222A Expired - Fee Related CN1066824C (en) | 1994-07-11 | 1994-07-11 | Test method and device for backlash of driving chain |
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| CN (1) | CN1066824C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553610B (en) * | 2003-05-30 | 2010-04-28 | 华为技术有限公司 | Authentication for roaming between CDMA to GSM |
| CN103852253B (en) * | 2012-12-05 | 2016-12-28 | 上海西门子医疗器械有限公司 | The measuring method of Timing Belt slackness, system and armarium |
| CN104748651A (en) * | 2013-12-31 | 2015-07-01 | 贵州航天乌江机电设备有限责任公司 | Method and device for detecting backlash amount of transmission mechanism |
| CN106872165A (en) * | 2017-02-24 | 2017-06-20 | 深圳市合发齿轮机械有限公司 | A kind of synchronous pulley resetting error measuring means and method |
| CN109443750B (en) * | 2018-10-18 | 2020-06-23 | 重庆长安工业(集团)有限责任公司 | Weapon system transmission backlash measurement method |
| CN114518630B (en) * | 2020-11-19 | 2023-09-01 | 成都极米科技股份有限公司 | Null back elimination method, device, electronic equipment and computer readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362055A (en) * | 1980-05-29 | 1982-12-07 | Deere & Company | Power transmission part testing apparatus |
| US4413513A (en) * | 1981-06-01 | 1983-11-08 | Ross Michael O | Machine for testing chain and sprocket type drive systems |
| US4783998A (en) * | 1984-07-06 | 1988-11-15 | Dme - Danish Micro Engineering A/S | Method of monitoring the operation of a cyclically moving, power generating or power transmitting element and an apparatus for monitoring the operation of such an element |
-
1994
- 1994-07-11 CN CN94112222A patent/CN1066824C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362055A (en) * | 1980-05-29 | 1982-12-07 | Deere & Company | Power transmission part testing apparatus |
| US4413513A (en) * | 1981-06-01 | 1983-11-08 | Ross Michael O | Machine for testing chain and sprocket type drive systems |
| US4783998A (en) * | 1984-07-06 | 1988-11-15 | Dme - Danish Micro Engineering A/S | Method of monitoring the operation of a cyclically moving, power generating or power transmitting element and an apparatus for monitoring the operation of such an element |
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| Publication number | Publication date |
|---|---|
| CN1115026A (en) | 1996-01-17 |
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