CN207816301U - A kind of axial movement Split encoder - Google Patents
A kind of axial movement Split encoder Download PDFInfo
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- CN207816301U CN207816301U CN201721922630.XU CN201721922630U CN207816301U CN 207816301 U CN207816301 U CN 207816301U CN 201721922630 U CN201721922630 U CN 201721922630U CN 207816301 U CN207816301 U CN 207816301U
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- code ring
- code
- photoemitter
- fixed seat
- shaft
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- 239000004744 fabric Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000005622 photoelectricity Effects 0.000 description 3
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- 230000003287 optical effect Effects 0.000 description 2
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- 238000005816 glass manufacturing process Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of axial movement Split encoders, are equipped with code ring, code ring fixed seat and fixed frame；Code ring is tubular, and the side wall of code ring, which is parallel to, is axially provided with grating, and one end and the code ring fixed seat of code ring are fixed；Code ring fixed seat is fixedly connected for the shaft to be measured with encoder, and keeps shaft and code ring coaxial；Fixed frame and code ring and code ring fixed seat are separately positioned, are equipped with a pair of of photoemitter in one end of fixed frame and photelectric receiver, photoemitter and photelectric receiver are oppositely arranged, gap is equipped with the code ring between photoemitter and photelectric receiver.The measurement error and impact that the utility model can be brought to avoid encoder by the axial float of shaft, it is unaffected when shaft needs axial float in the application, improve accuracy of measurement and precision.
Description
Technical field
The utility model is related to rotation measuring apparatus, specifically a kind of split type coding for overcoming shaft to move axially
Device.
Background technology
Encoder be signal or data are worked out, be converted to can be used for communicating, the signal form of transimission and storage
Equipment.Encoder is commonly used to swing offset being converted into string number pulse signal, and angular displacement is controlled using pulse signal, if
Encoder is combined together with gear bar or screw, can be used for measuring straight-line displacement.
Photoelectric encoder is a kind of angle (angular speed) detection device, it will input to the angular metric of axis, is turned using photoelectricity
Change principle, be converted into corresponding electric pulse or digital quantity, have it is small, precision is high, reliable operation, interface digitlization etc. it is excellent
Point.It is widely used in numerically-controlled machine tool, revolving platform, servo drive, robot, radar, military target measurement etc. and needs to detect angle
In the device and equipment of degree.
Photoelectric encoder is a kind of the geometry of machinery displacement on output shaft to be converted into pulse or number by opto-electronic conversion
The sensor of word amount.This is that most sensors, photoelectric encoder is applied to be made of grating disc and photoelectric detection system at present.
Grating disc is that several slots are partially opened on the plectane of certain diameter.Since photoelectric code disk is coaxial with motor,
When motor rotates, grating disc rotates at the same speed with motor, and the detection device through the electronic components such as light emitting diode composition detects
Several pulse signals are exported, the phase by calculating number and dipulse that photoelectric encoder per second exports pulse, which can reflect, to be worked as
The rotating speed of preceding motor and steering.
The transmitter-receiver device of photoelectric detection system is all mounted on production scene, and emitter or reception device are because of machinery
Displacement or offset caused by the reasons such as vibrations, cause reception device that cannot be reliably received optical signal, and cannot generate electricity
Signal.For example, photoelectric encoder is applied in steel rolling governing system because photoelectric encoder be directly be fixed by bolts to it is electronic
On the shell of machine, the axis of photoelectric encoder is connected by harder spring leaf with motor rotary shaft, because of motor institute bringing onto load
It is impact load, the vibration of motor rotary shaft and shell can be caused when milling train crosses steel, photoelectric encoder vibration speed when crossing steel
Degree is 2.6mm/s, and such vibration velocity can damage the built-in function of photoelectric encoder, causes accidentally to send out pulse, so as to cause control
System processed is unstable or malfunctions, and causes the accident.
Encoder during the installation process, centainly will appear encoder axis and rotary shaft out-of-alignment phenomenon, cause encoder
Axis fluctuates, and influences the measurement accuracy of encoder.
The code-disc of Split encoder is plane, and grating can be on code-disc, and code-disc is fixed in the rotary shaft of measuring apparatus.
If axial displacement or this vibration occur for rotary shaft, the code-disc to rotate together with the axis will be in contact with fixed reading head component
Or collision, friction is generated, rotary shaft rotating speed, or collision is influenced, damages code-disc, cause encoder that can not work.
Invention content
Technical problem to be solved in the utility model is the measurement for avoiding encoder from being brought by the axial float of shaft
Error and impact, it is unaffected when shaft needs axial float in the application, improve accuracy of measurement.
The axial movement Split encoder, it is characterised in that：Equipped with code ring, code ring fixed seat and fixed frame；
The code ring is tubular, and the side wall of code ring is parallel to the transmission hole that axially spaced-apart is provided with strip, the one of code ring
End is fixed with code ring fixed seat or integrally connected；
The code ring fixed seat is fixedly connected for the shaft to be measured with encoder, and keeps shaft and code ring coaxial；
The fixed frame and code ring and code ring fixed seat are separately positioned, and a pair of of photoemission is equipped in one end of fixed frame
Device and photelectric receiver, photoemitter and photelectric receiver are oppositely arranged, between photoemitter and photelectric receiver between
The code ring is arranged in gap.
Further, the code ring is made with glass material, and grating is carved in code ring outer surface or inner surface.
Preferably, the grating is distributed around the even circumferential of code ring, and the axial cross section structure of grating is consistent.
The photoemitter and photelectric receiver are perpendicular to being axially arranged with two pairs.
The photoemitter is connected by conducting wire respectively with photelectric receiver, conducting wire fixed frame surface be equipped with interface or
Lead-out wire, for being connect with numerical control device.
Bolt can be used in fixed frame and the shell of shaft equipment is fixed.
Compared with conventional codec, which has following features：
(1) grating is engraved in the code ring outer surface or inner surface of glass making, code ring and rotary shaft synchronous rotary, and and axis
It synchronizes axial direction or moves radially or vibration, and photoemitter is not contacted with photelectric receiver with code-disc, avoids traditional code
Device causes dropout and code-disc to damage phenomenon because rotary shaft generation is axially or radially moved or rotated.
(2) channel of certain length and width is set between photoemitter and photelectric receiver, code ring is inserted into channel, but
It is not in contact with channel, the coaxially connected mode of traditional encoder can be broken through, that is to say, that the encoder belongs to split type volume
Code device, compared with traditional seperated encoder, grating is can be in code ring outer surface or inner surface, rather than traditional plane code-disc
On.
(3) since the raster count that code ring is carved can be substantially larger than the raster count that code-disc is carved, the pulse of the utility model
Number can be substantially larger than the umber of pulse of conventional codec, and measurement accuracy can greatly improve.
Description of the drawings
Fig. 1 is the utility model structure diagram,
Fig. 2 is cross-sectional view.
In figure：1- code rings, 2- photelectric receivers, 3- photoemitters, 4- fixed frames, 5- code ring fixed seats, 6- shafts.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples：It is moved axially as shown in Fig. 1,2 seperated
Formula encoder is equipped with code ring 1, code ring fixed seat 5 and fixed frame 4；
The code ring 1 is tubular, and the side wall of code ring is parallel to axial setting, and is arranged at intervals with the transmission hole of strip,
The hole of strip is also parallel with shaft.The grating is distributed around the even circumferential of code ring, and the axial cross section structure one of grating
It causes.Grating spacings can also be arranged with non-uniform state in special application.
One end of code ring is fixed with code ring fixed seat 5 or integrally connected；The code ring fixed seat 5 is used for be measured with encoder
The shaft 6 of amount is fixedly connected, and keeps shaft 6 and code ring 1 coaxial.As shown in Fig. 2, fixed seat 5 can be solid by screw and shaft 6
It is fixed.
The fixed frame 4 and code ring and code ring fixed seat 5 are separately positioned, and a pair of of photoelectricity is equipped in one end of fixed frame 4
Transmitter 3 and photelectric receiver 2, photoemitter 3 and photelectric receiver 2 are oppositely arranged, in photoemitter 3 and opto-electronic receiver
The code ring 1 is inserted into gap between device 2.Therefore, even if axial transmission occurs for code ring, the reception for signal is also not influence
's.
Signal moment caused by prevent the vibration of shaft repeats to influence measurement accuracy caused by sending out, and also allows for measuring
It turns to, the photoemitter 3 and photelectric receiver 2 are perpendicular to being axially arranged with two pairs.Pass through two pairs of photoemitters 3 and photoelectricity
The phase difference of 2 output signal of receiver can differentiate the error that vibration when steering and elimination rotate in same direction is brought.
The photoemitter 3 is connected by conducting wire respectively with photelectric receiver 2, and conducting wire is equipped with interface on fixed frame surface
Or lead-out wire, for being connect with numerical control device.
Plane code-disc is changed to the code ring of annular by the encoder of the utility model, and grating is engraved in yard ring outer surface or interior
Surface, by code ring fix on the rotary shaft, and with rotary shaft synchronous rotary.In the outside of code ring, photoemitter is fixedly installed,
To shadow position on the inside of code ring, photelectric receiver is fixedly installed, code ring is rotated with rotary shaft, meanwhile, photosignal A and optical telecommunications
Equipment or the systems such as number B input speeds table, PLC, DCS, can record the transient speed of rotary shaft.
Since rotary shaft is in rotation process, it is possible to axial motion occur, for conventional coders, code-disc is fixed
On the rotary shaft, it is rotated together with rotary shaft, if axial motion occurs for rotary shaft, code-disc can also occur together with rotary shaft
Axial motion can rub at this point, axial displacement occurs for code-disc with the device of fixed photoemitter or photelectric receiver,
The rotating speed of rotary shaft is influenced, or is collided with the device of fixed photoemitter or photelectric receiver, causes code-disc impaired, Bu Nengzheng
Often work.The utility model avoids this present situation, and encoder can not be influenced by axial motion and impact.
When installation, one end of fixed frame 4 is inserted into 1 one end of code ring, and glass cement is used in combination to be fixed code ring with fixed frame；It is fixed
The other end of frame 4 and the shaft end of shaft are fixed using M3 hexagon socket head cap screws, and form an entirety with shaft 6.
A channel is formed between photoemitter and photelectric receiver, and code ring is inserted into photoemitter and opto-electronic receiver
Channel between device, and do not have with channel it is any contact, measuring part will not be impacted by rotating shaft transmission.Photoemitter and
Photelectric receiver can be fixed with hollow cylinder one end by M3 screws, and by hollow cylinder, this end seal is dead using disk, light
The signal wire and power cord of electric transmitter and photelectric receiver are arranged on the outside of disk, and signal wire accesses revolution counter or PLC, DCS
Device systems, power cord are derived from revolution counter or PLC, DCS device systems.
It is carved with grating in hollow code ring outer surface or inner surface, the signal that photoemitter is sent out passes through hollow code ring, quilt
Photelectric receiver receives, the rectangular wave of formation, revolution counter or PLC, DCS device systems is accessed, through revolution counter or PLC, DCS equipment
System processing, is converted into the rotating speed of rotary shaft, shows digital signal.
Claims (5)
1. a kind of axial movement Split encoder, it is characterised in that：Equipped with code ring (1), code ring fixed seat (5) and fixed frame
(4)；
The code ring (1) is tubular, and the side wall of code ring is parallel to the transmission hole that axially spaced-apart is provided with strip, one end of code ring
With code ring fixed seat (5) fixation or integrally connected；
The code ring fixed seat (5) is fixedly connected for the shaft (6) to be measured with encoder, and makes shaft (6) and code ring (1)
Coaxially；
The fixed frame (4) and code ring and code ring fixed seat (5) are separately positioned, and a pair of of light is equipped in one end of fixed frame (4)
Electric transmitter (3) and photelectric receiver (2), photoemitter (3) and photelectric receiver (2) are oppositely arranged, in photoemitter
(3) the code ring (1) described in gap setting between photelectric receiver (2).
2. Split encoder according to claim 1, it is characterised in that：The code ring (1) is made with glass material,
Code ring outer surface or inner surface are carved with grating.
3. Split encoder according to claim 2, it is characterised in that：Even circumferential point of the grating around code ring
Cloth, and the axial cross section structure of grating is consistent.
4. Split encoder according to claim 1, it is characterised in that：The photoemitter (3) and opto-electronic receiver
Device (2) is perpendicular to being axially arranged with two pairs.
5. Split encoder according to claim 1, it is characterised in that：The photoemitter (3) and opto-electronic receiver
Device (2) is connected by conducting wire respectively, and conducting wire is equipped with interface or lead-out wire on fixed frame surface, for being connect with numerical control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922630.XU CN207816301U (en) | 2017-12-31 | 2017-12-31 | A kind of axial movement Split encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922630.XU CN207816301U (en) | 2017-12-31 | 2017-12-31 | A kind of axial movement Split encoder |
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| Publication Number | Publication Date |
|---|---|
| CN207816301U true CN207816301U (en) | 2018-09-04 |
Family
ID=63329238
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721922630.XU Active CN207816301U (en) | 2017-12-31 | 2017-12-31 | A kind of axial movement Split encoder |
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| Country | Link |
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| CN (1) | CN207816301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829565A (en) * | 2020-06-30 | 2020-10-27 | 沈阳中光电子有限公司 | Code disc, encoder and assembling method |
-
2017
- 2017-12-31 CN CN201721922630.XU patent/CN207816301U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829565A (en) * | 2020-06-30 | 2020-10-27 | 沈阳中光电子有限公司 | Code disc, encoder and assembling method |
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Effective date of registration: 20220106 Address after: 210033 east section 04f, building C5, Hongfeng Science Park, Nanjing Economic and Technological Development Zone, Nanjing, Jiangsu Province Patentee after: Nanjing frost Environmental Protection Technology Co.,Ltd. Address before: 710075 Room 101, unit 1, building 20, Ziwei Tianyuan metropolitan area C, Yanta District, Xi'an City, Shaanxi Province Patentee before: Huang Lixin |