CN102853852B - Zero adjustment device for rotary encoders and application method thereof - Google Patents
Zero adjustment device for rotary encoders and application method thereof Download PDFInfo
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- CN102853852B CN102853852B CN201210101907.8A CN201210101907A CN102853852B CN 102853852 B CN102853852 B CN 102853852B CN 201210101907 A CN201210101907 A CN 201210101907A CN 102853852 B CN102853852 B CN 102853852B
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Abstract
The invention relates to a zero adjustment device for rotary encoders and an application method thereof. The device comprises an encoder acquisition card, a computer, an electronic hand wheel, a stepping motor driver, a stepping motor, a cylindrical worm, a helical gear and a universal magnetic gauge stand assembly, wherein the encoder acquisition card is used for connecting the signal output end of a rotary encoder of an automatic control mechanism, the computer is connected with the encoder acquisition card, the stepping motor driver is connected with output signals of the electronic hand wheel, and the stepping motor is connected with the stepper motor driver. In the process of operating, through rotating the electronic hand wheel, the stepping motor rotates and drives the helical gear to rotate through driving the cylindrical worm so as to drive a hollow rotating shaft, and meanwhile, the computer reads the output of the rotary encoder through the encoder acquisition card and displays whether the rotary encoder reaches a zero position; and when the rotary encoder reaches the zero position, a user stops rotating the electronic hand wheel, and the stepping motor stops rotating.
Description
Technical field
The present invention relates to the field that mechanical automation controls, particularly a kind of zero adjuster of rotary encoder of automatic controls and using method thereof.
Background technology
The automatic controls of general band rotating shaft in use needs to utilize rotary encoder to detect the angle of rotating shaft, when rotating shaft angle is particular value, a certain part movement of (being generally zero position) automatic controls is to a certain specific position, namely, when mechanism kinematic is to this position, just in time zero signal is exported with the rotary encoder of rotating shaft coaxial rotating; The mounting means of the rotary encoder on automatic controls: the hollow rotating shaft of described rotary encoder is connected with the rotating shaft transmission of tested automatic controls; The housing of rotary encoder is located on the installing plate of described tested automatic controls by an elastic support.
In order to the rotating shaft of the output signal and automatic controls that make rotary encoder is worked in coordination with, band rotating shaft automatic controls work last as need rotary encoder first to get back to zero point, as work starting point.
Because rotary encoder may be parked in circumferencial direction optional position in installation process, generally for and make rotary encoder rest in zero-bit, (scrambler rotating shaft is rotatable generally to need the connection of break encoder rotating shaft and mechanism's rotating shaft, and mechanism's rotating shaft is motionless), the rotating shaft of hand-turning scrambler is until export zero signal, owing to needing the rotating shaft of the hollow rotating shaft of described rotary encoder and tested automatic controls to be fixedly linked, therefore its precision wayward simultaneously.That is: traditional manual setting method to be difficult to scrambler rotating shaft fast, accurately, reliably zero dead stop.
Summary of the invention
The technical problem to be solved in the present invention is to provide zero adjuster and the using method thereof of the rotary encoder that installation and removal are easy, Adjustment precision is higher.
For solving the problems of the technologies described above, the invention provides a kind of zero adjuster of rotary encoder, it comprises: for the scrambler capture card connecting the signal output part of the rotary encoder of an automatic controls, the computing machine, the electronic hand wheel that are connected with this scrambler capture card, output signal the stepper motor driver be connected, the stepper motor be connected with this stepper motor driver, cylindrical worm, spiral gear and universal magnetic gauge stand assembly with this electronic hand wheel.
Spiral gear is located at the hollow rotating shaft of described rotary encoder for fixed cover, and this spiral gear is connected to each other by upper and lower symmetrically arranged upper and lower half spiral gear and forms.
The gauge stand of described universal magnetic gauge stand assembly is for being fixed on described tested automatic controls, and described cylindrical worm is movably set in an axle sleeve, and the leading portion portion of this axle sleeve tightly fits in the springhole chuck of described universal magnetic gauge stand assembly; Springhole chuck is fixedly connected with described gauge stand by Universal support arm; The position of described springhole chuck is suitable for the front end of described cylindrical worm is meshed with spiral gear.
Described springhole chuck is extended in the back segment portion of described axle sleeve, and the diameter in this back segment portion is greater than the diameter in described leading portion portion.
In axle sleeve, radial and axial play is there is not in order to make cylindrical worm described above, front end outer side on cylindrical worm and in described springhole chuck is provided with the first Limit Bearing, described cylindrical worm has a limited step of an annular in the front side of described first Limit Bearing, the external diameter of this limited step is greater than the internal diameter of the inner ring of the first Limit Bearing, and is less than the internal diameter of the outer ring of the first Limit Bearing; The first back-up ring and the second Limit Bearing is provided with before and after on cylindrical worm in the back segment portion of described axle sleeve; The second back-up ring and set nut is provided with successively on described axle sleeve and in the rear side of the second Limit Bearing.
During set nut locking, inner ring and the described limited step of the first Limit Bearing are adjacent to, and the outer ring of the first Limit Bearing and the front end face of described springhole chuck are adjacent to; The connecting portion in the leading flank of the first back-up ring and the front and rear sections portion of described axle sleeve is adjacent to, and the inside and outside circle of the second Limit Bearing is adjacent to described second, first back-up ring respectively.
The rear end of described cylindrical worm is in transmission connection by a shaft coupling and a stepper motor, and stepper motor is fixed on described axle sleeve; The A phase that electronic hand wheel exports, B phase signals access stepper motor driver pulse signal input terminal, direction signal input end respectively.
During work, rotate electronic hand wheel stepper motor is rotated and passes through to drive cylindrical worm to drive spiral gear to rotate, and then driving described hollow rotating shaft, simultaneous computer reads the output of described rotary encoder by described scrambler capture card and shows this rotary encoder and whether arrive zero-bit; When this rotary encoder arrives zero-bit, user stops operating electronic hand wheel, and stepper motor stops operating.
The using method of the zero adjuster of above-mentioned rotary encoder, comprises the following steps:
(a), determine rotary encoder approximate location at zero point: the signal output part of described rotary encoder is connected with described scrambler capture card, user slowly rotates the hollow rotating shaft of rotary encoder, computing machine is read the output of described rotary encoder by described scrambler capture card and is shown in real time, when Computer display rotary encoder is in zero-bit, user stops operating the hollow rotating shaft of rotary encoder, near rotary encoder zero dead stop;
(b), by the hollow rotating shaft of rotary encoder insert be used for the rotating shaft connecting tested automatic controls, with screw, elastic support is fixed on installing plate, and the upper and lower symmetrical wringing fit of upper and lower half spiral gear is located on described hollow rotating shaft;
(c), the gauge stand of described universal magnetic gauge stand assembly is fixed on described tested automatic controls, and regulate the orientation of Universal support arm, make the described springhole chuck of this Universal support arm end adjacent with spiral gear, finely tune this Universal support arm further and the leading section of described cylindrical worm and first helical gear tooth face center portion are engaged with each other;
D (), computing machine are read the output of described rotary encoder by described scrambler capture card and are shown in real time; When showing this rotary encoder not in zero-bit, user rotates electronic hand wheel, and then drives described cylindrical worm to rotate towards respective direction, until when this rotary encoder of Computer display arrives zero-bit, user stops operating electronic hand wheel, and stepper motor stops;
E (), the holding screw tightened on described hollow rotating shaft, to be connected and fixed the rotating shaft of this hollow rotating shaft and tested automatic controls; Then remove described universal magnetic gauge stand assembly and spiral gear successively, and disconnect the connecting line of described scrambler capture card and rotary encoder.
Tool of the present invention has the following advantages:
1, adjusting gear of the present invention, adopt cylindrical worm oblique gear mechanism adjustment rotary encoder to zero point and the hollow rotating shaft of fixing rotary encoder, because the stability of cylindrical worm oblique gear mechanism is higher, therefore to be suitable for scrambler rotating shaft fast, accurately, reliably zero dead stop so that be connected and fixed described hollow rotating shaft and rotating shaft.Rotary encoder for different size only need provide spiral gear supporting with it normally to work according to its hollow rotating shaft external diameter (or solid shaft external diameter), and can by cylindrical worm gearing transmission device described in driving stepper motor in adjustment process, versatility is stronger;
2, adjusting gear of the present invention, make use of the advantage that cylindrical worm Helical gear Transmission drive system is steady, precision is high, makes adjustment process precision high and is easy to control;
3, each modular construction of adjusting gear of the present invention is compact, and easy-disassembling-assembling universal magnetic gauge stand assembly is made this device simple installation as cylindrical worm position and gesture correcting member, convenient disassembly;
4, by adjustment, cylindrical worm and spiral gear can realize gapless driving, by universal magnetic gauge stand assembly locking effect, scrambler hollow rotating shaft can be made to be locked at zero-bit, the not change when stubborn holding screw;
5, adopt sense of rotation and the anglec of rotation of electronic hand wheel output signal control step motor, manipulation is convenient, and zero-bit regulated efficiency is higher;
6, cylindrical worm can adopt straight-sided axial worm, and job operation is identical with the common trapezoidal helical of processing, and namely with trapezoidal straight sword lathe tool processing, processing cost is low; Spiral gear is also easy to processing.Electronic hand wheel, stepper motor and driver are all the product manufactured in enormous quantities, low price.Therefore, package unit cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the zero adjuster of rotary encoder of the present invention;
Fig. 2 is the B-B sectional view of Fig. 1, is specifically related to the assembly structure schematic diagram of spiral gear, cylindrical worm;
Fig. 3 is the spiral gear front view that the present invention relates to;
Fig. 4 is the A-A sectional view of Fig. 1, is specifically related to the assembly structure schematic diagram of rotary encoder;
Fig. 5 is the C-C sectional view of Fig. 3;
Fig. 6 is the circuit block diagram of the zero adjuster of rotary encoder of the present invention.
Embodiment
In order to make, content of the present invention is easier to be understood, and below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation:
Embodiment 1
The mounting means of the rotary encoder on automatic controls: the hollow rotating shaft 4-1 of described rotary encoder is connected with rotating shaft 1 transmission of tested automatic controls; The housing 4-3 of rotary encoder 4 is located on the installing plate 2 of described tested automatic controls by an elastic support 4-2.
As Fig. 1-5, the zero adjuster of rotary encoder comprises: for connecting the scrambler capture card of the signal output part of the rotary encoder 4 of an automatic controls, the computing machine be connected with this scrambler capture card, electronic hand wheel, the stepper motor driver be connected with the signal output part of this electronic hand wheel, the stepper motor be connected with this stepper motor driver, spiral gear 5, cylindrical worm 6 and universal magnetic gauge stand assembly 11.Described stepper motor driver is suitable for the pulse number of direction control signal and the pulse signal exported according to electronic hand wheel, drives described stepper motor to rotate corresponding angle to respective direction.
Spiral gear 5 is located at the hollow rotating shaft 4-1 of described rotary encoder 4 for fixed cover, and this spiral gear 5 is by symmetrically arranged first spiral gear 5-2, second spiral gear 5-1 are connected to each other and form up and down.
The gauge stand 11-1 of described universal magnetic gauge stand assembly 11 is for being fixed on described tested automatic controls, described cylindrical worm 6 is movably set in an axle sleeve 7, and the leading portion portion of this axle sleeve 7 tightly fits in the springhole chuck 11-8 of described universal magnetic gauge stand assembly 11; Springhole chuck 11-8 is fixedly connected with described gauge stand 11-1 by Universal support arm 11-3; The position of described springhole chuck 11-8 is suitable for the leading section 6-1 of described cylindrical worm 6 is meshed with spiral gear 5.
Described springhole chuck 11-8 is extended in the back segment portion of described axle sleeve 7, and the diameter in this back segment portion is greater than the diameter in described leading portion portion.
Front end outer side on cylindrical worm 6 and in described springhole chuck 11-8 is provided with the first Limit Bearing 12, described cylindrical worm 6 has a limited step 6-2 of an annular in the front side of described first Limit Bearing 12, the external diameter of this limited step 6-2 is greater than the internal diameter of the inner ring of the first Limit Bearing 12, and is less than the internal diameter of the outer ring of the first Limit Bearing 12.
The first back-up ring 8-1 and the second Limit Bearing 8 is provided with before and after on cylindrical worm 6 in the back segment portion of described axle sleeve 7; The second back-up ring 8-2 and set nut 10 is provided with successively on described axle sleeve 7 and in the rear side of the second Limit Bearing 8.
When set nut 10 is locked, inner ring and the described limited step 6-2 of the first Limit Bearing 12 are adjacent to, and the outer ring of the first Limit Bearing 12 and the front end face of described springhole chuck 11-8 are adjacent to; The connecting portion 7-1 in the leading flank of the first back-up ring 8-1 and the front and rear sections portion of described axle sleeve 7 is adjacent to, and the inside and outside circle of the second Limit Bearing 8 is adjacent to described second back-up ring 8-2, the first back-up ring 8-1 respectively.
The rear end of described cylindrical worm 6 is in transmission connection by a shaft coupling 9 and a stepper motor 3, and stepper motor 3 is fixed on described axle sleeve 7.
During work, the output signal access stepper motor driver of electronic hand wheel, and according to the rotation direction of this signal controling stepping motor 3, and by driving cylindrical worm 6 to drive spiral gear 5 to rotate, and then driving described hollow rotating shaft 4-1, simultaneous computer reads the output of described rotary encoder 4 by described scrambler capture card and shows this rotary encoder 4 and whether arrive zero-bit; When this rotary encoder 4 arrives zero-bit, user stops operating electronic hand wheel, stops with control step motor 3.
During concrete enforcement, the semi circular surface of first spiral gear 5-2, second spiral gear 5-1 is provided with the boss be mutually symmetrical, this boss is provided with pair of bolts hole, and to make first spiral gear 5-2, second spiral gear 5-1 is fixedly connected into described spiral gear 5 by pair of bolts 5-3.In other embodiments, first spiral gear 5-2, second spiral gear 5-1 are suitable for being connected by magnetic or being fixedly connected with by fixture each other.
Embodiment 2
The using method of the zero adjuster of the rotary encoder in above-described embodiment 1, comprising:
First rotary encoder approximate location at zero point is determined.Be connected with described scrambler capture card by the signal output part of described rotary encoder, scrambler capture card inserts in expanded slot of computer; User holds encoder housing on the other hand, slowly rotate the hollow rotating shaft of rotary encoder on the other hand, computing machine is read the output of described rotary encoder by described scrambler capture card and is shown in real time, now namely software design patterns is presented at zero-bit for reading zero signal and stops reading zero signal, to stop operating after zero-bit the hollow rotating shaft of rotary encoder when user observes Computer display, delayed due to person's development, rotary encoder generally just in time can not stop at zero-bit, but near zero dead stop.
The hollow rotating shaft 4-1 of rotary encoder 4 is inserted and is used for the rotating shaft 1 connecting tested automatic controls, with screw, elastic support 4-2 is fixed on installing plate 2, and symmetrical to first spiral gear 5-2, second spiral gear 5-1 wringing fit is located on described hollow rotating shaft 4-1.
Tighten knob 11-9, described axle sleeve 7 is tightly fitted in the springhole chuck 11-8 of described universal magnetic gauge stand assembly 11; Turning handle 11-2, to " ON ", makes the gauge stand 11-1 of universal magnetic gauge stand assembly 11 be fixed on described tested automatic controls.
Regulate the orientation of the Universal support arm 11-3 of magnetic stand assembly 11, make the described springhole chuck 11-8 of this Universal support arm 11-3 end adjacent with spiral gear 5, this Universal support arm 11-3 of further fine setting also makes the tooth face center portion of the leading section 6-1 of described cylindrical worm 6 and first spiral gear 5-2 be engaged with each other, owing to determining rotary encoder approximate location at zero point, therefore in actual use, the anglec of rotation of spiral gear 5 is generally less than 45 °, so cylindrical worm 6 need not at first spiral gear 5-2, the flank of tooth junction engagement of second spiral gear 5-1 just can find zero-bit, so ensure that the precision that zero-bit adjusts and reliability, in addition, first spiral gear 5-2, second spiral gear 5-1 can be cut open through electric spark linear cutting machine by a complete spiral gear, and the error that produces of process of cutting open on its usability without impact.
The signal output part of described rotary encoder 4 is connected with described scrambler capture card; Computing machine reads the output signal of described rotary encoder 4 by described scrambler capture card in real time and shows; When showing this rotary encoder 4 not in zero-bit, user rotates electronic hand wheel, the rotation direction of control step motor 3, and then drive described cylindrical worm 6 to rotate towards respective direction, until when this rotary encoder 4 of Computer display arrives zero-bit, user stops operating electronic hand wheel, and computer-controlled stepper motor 3 stops; Tighten the holding screw 4-4 on described hollow rotating shaft 4-1, to be connected and fixed the rotating shaft 1 of this hollow rotating shaft 4-1 and tested automatic controls; Then remove described universal magnetic gauge stand assembly 11 and spiral gear 5 successively, and disconnect the connecting line of described scrambler capture card and rotary encoder 4.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (2)
1. the zero adjuster of a rotary encoder, it comprises: for the scrambler capture card connecting the signal output part of the rotary encoder of a tested automatic controls, the computing machine, the electronic hand wheel that are connected with this scrambler capture card, output signal the stepper motor driver be connected, the stepper motor be connected with this stepper motor driver, cylindrical worm, spiral gear and universal magnetic gauge stand assembly with this electronic hand wheel;
Spiral gear is located at the hollow rotating shaft of described rotary encoder for fixed cover, and this spiral gear is connected to each other by upper and lower symmetrically arranged upper and lower half spiral gear and forms;
The gauge stand of described universal magnetic gauge stand assembly is for being fixed on described tested automatic controls, and described cylindrical worm is movably set in an axle sleeve, and the leading portion portion of this axle sleeve tightly fits in the springhole chuck of described universal magnetic gauge stand assembly; Springhole chuck is fixedly connected with described gauge stand by Universal support arm; The position of described springhole chuck is suitable for the front end of described cylindrical worm is meshed with spiral gear;
Described springhole chuck is extended in the back segment portion of described axle sleeve, and the diameter in this back segment portion is greater than the diameter in described leading portion portion;
In axle sleeve, radial and axial play is there is not in order to make cylindrical worm described above, front end outer side on cylindrical worm and in described springhole chuck is provided with the first Limit Bearing, described cylindrical worm has a limited step of an annular in the front side of described first Limit Bearing, the external diameter of this limited step is greater than the internal diameter of the inner ring of the first Limit Bearing, and is less than the internal diameter of the outer ring of the first Limit Bearing; The first back-up ring and the second Limit Bearing is provided with before and after on cylindrical worm in the back segment portion of described axle sleeve; The second back-up ring and set nut is provided with successively on described axle sleeve and in the rear side of the second Limit Bearing;
During set nut locking, inner ring and the described limited step of the first Limit Bearing are adjacent to, and the outer ring of the first Limit Bearing and the front end face of described springhole chuck are adjacent to; The connecting portion in the leading flank of the first back-up ring and the front and rear sections portion of described axle sleeve is adjacent to, and the inside and outside circle of the second Limit Bearing is adjacent to described second, first back-up ring respectively;
The rear end of described cylindrical worm is in transmission connection by a shaft coupling and a stepper motor, and stepper motor is fixed on described axle sleeve; The A phase that electronic hand wheel exports, B phase signals access stepper motor driver pulse signal input terminal, direction signal input end respectively;
During work, rotate electronic hand wheel stepper motor is rotated and passes through to drive cylindrical worm to drive spiral gear to rotate, and then driving described hollow rotating shaft, simultaneous computer reads the output of described rotary encoder by described scrambler capture card and shows this rotary encoder and whether arrive zero-bit; When this rotary encoder arrives zero-bit, user stops operating electronic hand wheel, and stepper motor stops operating.
2. the using method of the zero adjuster of the rotary encoder described in the claims 1, is characterized in that comprising the following steps:
(a), determine rotary encoder approximate location at zero point: the signal output part of described rotary encoder is connected with described scrambler capture card, user slowly rotates the hollow rotating shaft of rotary encoder, computing machine is read the output of described rotary encoder by described scrambler capture card and is shown in real time, when Computer display rotary encoder is in zero-bit, user stops operating the hollow rotating shaft of rotary encoder, near rotary encoder zero dead stop;
(b), by the hollow rotating shaft of rotary encoder insert be used for the rotating shaft connecting tested automatic controls, with screw, elastic support is fixed on installing plate, and the upper and lower symmetrical wringing fit of upper and lower half spiral gear is located on described hollow rotating shaft;
(c), the gauge stand of described universal magnetic gauge stand assembly is fixed on described tested automatic controls, and regulate the orientation of Universal support arm, make the described springhole chuck of this Universal support arm end adjacent with spiral gear, finely tune this Universal support arm further and the leading section of described cylindrical worm and first helical gear tooth face center portion are engaged with each other;
D (), computing machine are read the output of described rotary encoder by described scrambler capture card and are shown in real time; When showing this rotary encoder not in zero-bit, user rotates electronic hand wheel, and then drives described cylindrical worm to rotate towards respective direction, until when this rotary encoder of Computer display arrives zero-bit, user stops operating electronic hand wheel, and stepper motor stops;
E (), the holding screw tightened on described hollow rotating shaft, to be connected and fixed the rotating shaft of this hollow rotating shaft and tested automatic controls; Then remove described universal magnetic gauge stand assembly and spiral gear successively, and disconnect the connecting line of described scrambler capture card and rotary encoder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210101907.8A CN102853852B (en) | 2012-04-09 | 2012-04-09 | Zero adjustment device for rotary encoders and application method thereof |
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| CN201210101907.8A CN102853852B (en) | 2012-04-09 | 2012-04-09 | Zero adjustment device for rotary encoders and application method thereof |
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| CN102853852B true CN102853852B (en) | 2015-01-07 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103292837B (en) * | 2013-06-17 | 2016-05-18 | 北京万源多贝克包装印刷机械有限公司 | A kind of encoder zero testing method and tester |
| CN104898764B (en) * | 2015-06-11 | 2017-03-01 | 中南大学 | A kind of digital adjustable damping handle apparatus Zero-point Positioning |
| CN105081720B (en) * | 2015-08-06 | 2017-07-25 | 多摩川精密电机（苏州）有限公司 | A kind of the simple of encoder takes off formula installation method |
| CN106678126B (en) * | 2015-11-05 | 2018-05-18 | 常州工学院 | One kind can pinpoint numerical control oil cylinder and its control method |
| CN106629397B (en) * | 2016-12-29 | 2018-01-02 | 中联重科股份有限公司 | Crane rotation angle zero point calibration method and system and crane |
| CN110567501A (en) * | 2019-08-23 | 2019-12-13 | 上海竞久自动化科技有限公司 | novel electronic zero setting circuit of magnetic encoder |
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Effective date of registration: 20180205 Address after: 213119 Star Road, Star Road, Star Village, Hengshan Bridge Town, Wujin District, Changzhou, Jiangsu Province, No. 6 Patentee after: Changzhou Maite Motor Co. Ltd. Address before: 213011 No. 299 South Tongjiang Road, Tianning District, Jiangsu, Changzhou Patentee before: Changzhou Polytechnic College |
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