CN102506766A - High-precision photoelectric-angular encoder - Google Patents
High-precision photoelectric-angular encoder Download PDFInfo
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- CN102506766A CN102506766A CN2011103266874A CN201110326687A CN102506766A CN 102506766 A CN102506766 A CN 102506766A CN 2011103266874 A CN2011103266874 A CN 2011103266874A CN 201110326687 A CN201110326687 A CN 201110326687A CN 102506766 A CN102506766 A CN 102506766A
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Abstract
The invention discloses a high-precision photoelectric-angular encoder, which comprises a base, a shaft system, a coding plate, a light-emitting board, a slit and a receiving tube, wherein the shaft system comprises a hollow shaft and a bearing; the bearing is sleeved on the hollow shaft and is in tight fit with the hollow shaft; the bearing and the base are in tight fit; the coding plate is in tight fit with the upper part of the hollow shaft; and the slit, the light-emitting board and the receiving tube are fixed with the base. With a compact and reasonable structure and small volume, the high-precision photoelectric-angular encoder disclosed by the invention is a small encoder; and the precision of the high-precision photoelectric-angular encoder is high, and the installation, debugging and replacement of the high-precision photoelectric-angular encoder are very convenient.
Description
Technical field
The present invention relates to a kind of high precision photoelectric shaft-position encoder, belong to the accurate light, mechanical, electrical integrated middle shaft-position encoder technical field of using.
Background technology
At present, photoelectric encoder is widely used in fields such as radar, electro-optic theodolite, Aero-Space, numerically-controlled machine, medicine equipment, automobile, steel rolling, director and high precision closed loop governing system, is the desirable digitizing angular transducer of self-reacting device, equipment.Because optical angle scrambler volume is little, in light weight, cost is few, convenient in application, connect etc. with the position measurement of the electronic application ranged space, linear movement measuring, angle displacement measurement, moving control rate metering computer and can constitute closed loop, half-closed loop control system, realize digital control to mechanical motion.In light, mechanical, electrical integrated technique field, mainly possess following characteristics: 1, can take the different coding mode according to different demands; 2, require to differ for angle-measurement accuracy, especially under high-precision requirement, grating dish graduating accuracy requires to differ; 3, under the prerequisite that satisfies the application-specific requirement, reduce the cost of total system as far as possible from design.Specifically in light, mechanical, electrical integrated technique field; Mainly contain two kinds of relevant technical schemes: 1, increment type shaft-position encoder; It is made up of equally spaced groove; Corresponding each resolution is interval, an exportable delta pulse, and counter carries out accumulated counts with respect to reference position (zero-bit) to the output pulse; 2, accurate absolute type encoder, it is made up of circulation code channel and index code channel, and the circulation code channel still is made up of a series of evenly staggered shading and printing opacity grating lines.
Summary of the invention
The objective of the invention is to: a kind of compact conformation is provided and debugs and change all high precision photoelectric shaft-position encoder very easily, thereby can effectively solve the problem that exists in the above-mentioned prior art.
The object of the invention realizes through following technical proposals: a kind of high precision photoelectric shaft-position encoder; It comprises base, axle system, code-wheel, luminous plaque, slit and receiving tube; Said axle system comprise that tubular shaft and bearing, bearing are placed on the tubular shaft and with tubular shaft wringing fit, bearing and base wringing fit; The top wringing fit of said code-wheel and tubular shaft, said slit, luminous plaque and receiving tube and base are fixed.
As a kind of optimal way, the outer ring of said bearing and base wringing fit.
As a kind of optimal way, said code-wheel is located at the top of slit, and luminous plaque is located at the below of slit.
As a kind of optimal way, said receiving tube, slit and luminous plaque radially be straight line.
As a kind of optimal way, said axle be diameter run-out less than 0.005mm, face runout is less than 0.005mm.
As a kind of optimal way, the gap between said code-wheel and the slit is 0.4mm-0.6mm.
Compared with prior art; Beneficial effect of the present invention: high precision photoelectric shaft-position encoder compact conformation of the present invention, reasonable, overall volume is little, is a kind of scrambler of miniaturization; Simultaneously; The precision of this optical electric axial angle encoder is high, debugs and change all very convenient, is adapted at accurate light, mechanical, electrically apply in integrated.
Description of drawings
Fig. 1 is the structural representation of high precision photoelectric shaft-position encoder of the present invention.
Wherein: base-1, tubular shaft-2, bearing-3, code-wheel-4, luminous plaque-5, slit-6, receiving tube-7.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Disclosed all characteristics in this instructions, or the step in disclosed all methods or the process are except the speciality of mutual repulsion and/or the step; All can make up by any way; Only if special narration all can be replaced by other equivalences or the alternative features with similar purpose, promptly; Only if special narration, an embodiment in a series of equivalences of each characteristic or the similar characteristics.
Accompanying drawing shows the high precision photoelectric shaft-position encoder that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
Embodiment
As shown in Figure 1; A kind of high precision photoelectric shaft-position encoder comprises base 1, axle system, code-wheel 4, luminous plaque 5, slit 6 and receiving tube 7; Said axle system comprises tubular shaft 2 and bearing 3, said axle be diameter run-out less than 0.005mm, face runout is less than 0.005mm.Bearing 3 be placed on the tubular shaft 2 and with tubular shaft 2 wringing fits, specifically in the present embodiment, the outer ring of said bearing 3 and base 1 wringing fit.Bearing 3 and base 1 wringing fit, the top wringing fit of said code-wheel 4 and tubular shaft 2, said code-wheel 4 is located at the top of slit 6, and luminous plaque 5 is located at the below of slit 6, and the gap between said code-wheel 4 and the slit 6 is 0.4mm-0.6mm.Said slit 6, luminous plaque 5 and receiving tube 7 are fixing with base 1, said receiving tube 7, slit 6 and luminous plaque 5 radially be straight line.
High precision photoelectric shaft-position encoder of the present invention comprises physical construction part and signal processing, and wherein the physical construction part is as shown in Figure 1.
Wherein, the parts effect of physical construction part is following:
Axle system: be mainly code-disc mounting platform is provided.Its physical dimension designs as requested, itself is an independent parts.
Since whole encoder form Moire fringe data from producing relative motion between code-disc and the slit, through follow-up signal Processing output angle data.Therefore the precision of the whole code-disc of design relation of axle system, designing requirement axle be diameter run-out less than 0.005mm, face runout is less than 0.005mm.At axle is in the assembling process, needs section installed surface and end face to carry out milled processed, should reach above-mentioned quantizating index requirement, submissive in the rotary course, steady, no jerk and catching phenomenon after axle system installs.
Code-wheel 4: code-wheel 4 is a glass material, on glass material, carries out etching according to certain intervals (micron order), thereby on code-wheel 4, stays light and dark rag of a week, lets light pass through code-wheel 4 with light and shade mode at interval with this.
Luminous plaque 5: luminous plaque 5 directly provides direct supply for luminous plaque for the form of luminotron is installed on pcb board, luminous plaque directly sends light signal.
Slit 6: slit 6 is a glass material, has a shade line on glass, and the part printing opacity of seam is arranged, and plays the effect of part printing opacity.
Receiving tube 7: receiving tube 7 comprises dash receiver and signal-processing board, and its effect mainly is the light and shade light signal at interval that receives through code-wheel 4.Luminous plaque 5 is connected as a single entity with receiving tube 7 and housing.
The installation process of high precision photoelectric shaft-position encoder of the present invention is following:
The first step is installed on the correspondence position on the code-wheel 4 below mounting seat 1 with the luminescent system of being with luminous plaque 5.
In second step, code-wheel 4 is aimed at installation with luminous plaque 5 on vertical line.Specifically, code-wheel 4 directly is bonded on the encoder basement through fastening agent, in bonding process, necessarily lets repeatedly rotate between encoder basement and the code-wheel 4, makes bonding agent evenly to apply with this, otherwise causes bonding not firm easily.Before bonding agent was done, need carry out code-wheel 4 through autocollimator was the debugging of concentricity with axle, after debug results meets the demands, and fixing code-disc.
The 3rd step; After code-wheel 4 is bonding; It is on the mount pad that slit 6 is installed to axle; Wherein must choose suitable gap between slit and the code-wheel 4, avoid because improper the causing in gap produces the scraping phenomenon in rotary course between code-disc and the slit, selecting the gap between code-wheel 4 and the slit 6 in the present embodiment is 0.4mm.
The 4th step will be installed on the base erecting frame of slit upper end with the receiving system and the signal processing system of receiving tube 7 again, in this installation process, made reception light pipe, slit and luminotron in alignment in radial shape, otherwise can't collect light signal.Receive in the process of system and signal processing system in attaching, need constantly finely tune the position of receiving tube on PCB, make that with this reception light pipe, slit and luminotron are in alignment in radial shape according to actual conditions.
When the each part mentioned above assembled, the basic assembled of whole optical electric axial angle encoder structural member part.
Accomplish after the above-mentioned work, can carry out scrambler debugging work.
Scrambler debugging work is important to be to the back end signal processing section; Whole signal processing mainly is made up of power module, A/D module, crystal oscillator module, single-chip microcomputer etc.; Coupling through resistance, electric capacity makes the signal of scrambler reach optimum condition, can carry out the electricity segmentation according to the request for utilization signal Processing and improve angular resolution.
The signal Processing principle of high precision photoelectric shaft-position encoder of the present invention is following:
Luminotron on the luminous plaque 5 is that luminous plaque 5 provides after the direct supply, and luminous plaque is directly luminous, and light sees through code-wheel 4 and directly arrives at receiving tube 7 with slit 6.Receiving tube 7 converts the electrooptical device of the light signal that receives through signal processing into simulating signal.Simulating signal converts digital signal into through the AD chip, and digital signal is sent into process chip, carries out coded signal and handles.The final signal processing section sends the form of the coded signal that disposes with angle through interface chip.
At first tubular shaft and bearing are carried out the wringing fit assembling, then bearing outer ring and base are carried out the wringing fit assembling, whole like this axle is just to be fixed on the base.When photoelectric encoder is used in the system; The tubular shaft that the main shaft of system is passed scrambler carries out wringing fit; Adopt the bulb of fritillary with main shaft and coder shaft compression fit at end face, be with the coder shaft rotation during main axis rotation, thereby gather anglec of rotation data; Therefore, the present invention debugs and changes very convenient.
Through instructions of the present invention, and combine Figure of description and claims, the deviser of this professional domain can require concrete structural parameters are set according to detailed programs, and carries out system optimization through infrastructure software, realizes the design result that is obtained in the accompanying drawing.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. high precision photoelectric shaft-position encoder; Comprise base (1), axle system, code-wheel (4), luminous plaque (5), slit (6) and receiving tube (7); It is characterized in that: said axle is to comprise tubular shaft (2) and bearing (3); Bearing (3) be placed in that tubular shaft (2) is gone up and with tubular shaft (2) wringing fit; Bearing (3) and base (1) wringing fit, the top wringing fit of said code-wheel (4) and tubular shaft (2), said slit (6), luminous plaque (5) and receiving tube (7) are fixing with base (1).
2. high precision photoelectric shaft-position encoder as claimed in claim 1 is characterized in that: the outer ring of said bearing (3) and base (1) wringing fit.
3. like the described high precision photoelectric shaft-position encoder of arbitrary claim in claim 1 or 2, it is characterized in that: said code-wheel (4) is located at the top of slit (6), and luminous plaque (5) is located at the below of slit (6).
4. high precision photoelectric shaft-position encoder as claimed in claim 3 is characterized in that: said receiving tube (7), slit (6) and luminous plaque (5) radially for straight line.
5. high precision photoelectric shaft-position encoder as claimed in claim 1 is characterized in that: said axle be diameter run-out less than 0.005mm, face runout is less than 0.005mm.
6. high precision photoelectric shaft-position encoder as claimed in claim 1 is characterized in that: the gap between said code-wheel (4) and the slit (6) is 0.4mm-0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103266874A CN102506766A (en) | 2011-10-25 | 2011-10-25 | High-precision photoelectric-angular encoder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103266874A CN102506766A (en) | 2011-10-25 | 2011-10-25 | High-precision photoelectric-angular encoder |
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| CN102506766A true CN102506766A (en) | 2012-06-20 |
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| CN2011103266874A Pending CN102506766A (en) | 2011-10-25 | 2011-10-25 | High-precision photoelectric-angular encoder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853766A (en) * | 2012-09-27 | 2013-01-02 | 中国科学院云南天文台 | Method utilizing dicode disc to detect shaft end deflection of theodolite height shaft |
| CN107941252A (en) * | 2017-12-28 | 2018-04-20 | 长春禹衡光学有限公司 | A kind of grating angle encoder |
| CN108332778A (en) * | 2018-02-09 | 2018-07-27 | 滁州职业技术学院 | A kind of increment type corner metering device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001018492A1 (en) * | 1999-09-03 | 2001-03-15 | American Precision Industries Inc. | Incremental optical encoder |
| CN1360198A (en) * | 2001-10-30 | 2002-07-24 | 中国科学院长春光学精密机械与物理研究所 | Combined multifunctional encoder |
| CN2789729Y (en) * | 2005-03-14 | 2006-06-21 | 无锡市海德科技有限公司 | Reflective photoelectric axial angle coder |
| CN101000250A (en) * | 2006-01-12 | 2007-07-18 | 中国科学院长春光学精密机械与物理研究所 | Absolute compound axis photoelectric shaft-position encoder |
-
2011
- 2011-10-25 CN CN2011103266874A patent/CN102506766A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001018492A1 (en) * | 1999-09-03 | 2001-03-15 | American Precision Industries Inc. | Incremental optical encoder |
| CN1360198A (en) * | 2001-10-30 | 2002-07-24 | 中国科学院长春光学精密机械与物理研究所 | Combined multifunctional encoder |
| CN2789729Y (en) * | 2005-03-14 | 2006-06-21 | 无锡市海德科技有限公司 | Reflective photoelectric axial angle coder |
| CN101000250A (en) * | 2006-01-12 | 2007-07-18 | 中国科学院长春光学精密机械与物理研究所 | Absolute compound axis photoelectric shaft-position encoder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853766A (en) * | 2012-09-27 | 2013-01-02 | 中国科学院云南天文台 | Method utilizing dicode disc to detect shaft end deflection of theodolite height shaft |
| CN107941252A (en) * | 2017-12-28 | 2018-04-20 | 长春禹衡光学有限公司 | A kind of grating angle encoder |
| CN108332778A (en) * | 2018-02-09 | 2018-07-27 | 滁州职业技术学院 | A kind of increment type corner metering device |
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Application publication date: 20120620 |