CN2320981Y - Connecting transmission device of grating linear displacement sensor - Google Patents
Connecting transmission device of grating linear displacement sensor Download PDFInfo
- Publication number
- CN2320981Y CN2320981Y CN 97205503 CN97205503U CN2320981Y CN 2320981 Y CN2320981 Y CN 2320981Y CN 97205503 CN97205503 CN 97205503 CN 97205503 U CN97205503 U CN 97205503U CN 2320981 Y CN2320981 Y CN 2320981Y
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- China
- Prior art keywords
- read head
- displacement sensor
- indication grating
- left end
- grating seat
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 title abstract description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims description 24
- 230000033001 locomotion Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
A connection transmission device of a grating linear displacement sensor relates to the improvement of a connection mechanism between a reading head and an indication grating seat, and is characterized in that a right end extension arm of the reading head is in rigid connection with a flat crystal plane which is bonded with a pressure spring at the left end of the reading head through the right end of the indication grating seat under the pressure of a ball head tip, the ball head tip is in elastic contact with the flat crystal plane at the left end of the indication grating seat under the action of the pressure spring, and a spring steel wire extends out from the left end of the reading head to apply pressure to the middle of the indication grating seat. The grating linear displacement sensor is suitable for length measurement, machine tool digital display and machine tool numerical control.
Description
The utility model is a kind of connection gearing of optical grid line displacement sensor, and the particularly further improvement of bindiny mechanism between read head and the indication grating seat is applicable to length metering, and the lathe numeral shows the optical grid line displacement sensor of numerical control of machine tools.
In optical grid line displacement sensor, read head moves relative to the grating chi, read head passes to the fixedly indication grating seat of indication grating to displacement, like this, key light grid and indication grating produce moire frange signal under certain clearance and angle, by the photo-electric conversion element output shift quantity electric signal on the read head.Wherein indication grating only allows the motion of a direction with respect to the key light grid, and the precision of transmitting the read head of this motion and the bindiny mechanism between the indication grating seat produces a very large impact the overall accuracy of sensor.The optical grid line displacement sensor of domestic manufacturer's production at present, all adopt the steel wire steel ball to be connected between read head and the indication grating seat with the elasticity of taper hole, just stretch out spring steel wire by read head, weld a steel ball at the steel wire head, steel ball acts on the taper hole on the indication grating seat, steel wire provides pressure and driving force like this, steel ball and taper hole guarantee transmission accuracy, in this structure, when there are movement angle in steel wire and indication grating seat direction of motion because there are movement warp in read head and grating chi, will produce the errors of principles of sine mechanism, make indication grating seat and grating chi have an offset deviation directly to influence the precision of sensor.The sensor that connects for this elasticity improves the way of precision, and the linear movement pick-up of domestic production at present mainly adopts: 1, strengthen intensity of steel wire; 2, reduce the angle of steel wire and direction of motion; 3, improve installation accuracy.But because optical grid line displacement sensor is widely used in the transformation of old lathe digital display, and the kinematic accuracy of lathe is not high.Therefore this steel wire steel ball is connected the precision that influences sensor inevitably with the elasticity of taper hole.
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and the gearing that is connected for rigidly connected optical grid line displacement sensor is provided between a kind of read head and the indication grating seat, can eliminate because the not parallel error that causes of relative motion between read head and the grating chi, keep stable contact the between grating chi and the indication grating seat, the raising transmission accuracy.
The purpose of this utility model can reach by following measure: the connection gearing of optical grid line displacement sensor, read head moves relative to the grating chi, produces moire frange signal, the electrooptical device output shift quantity electric signal on read head.The right-hand member extension arm of read head with the sphere screw that is threaded with the bonding optical flat planar rigidity of the indication grating seat right-hand member under the top pressure is connected by bulb at read head left end stage clip, bulb is top to be contacted with the optical flat plane elasticity of indication grating seat left end under the stage clip effect, has spring steel wire to stretch out to indication grating seat middle part from the read head left end and exerts pressure.
The purpose of this utility model can also reach by following measure: can freely rotate when the optical flat plane contacts with sphere screw and bulb are top and with the direction of motion vertical plane on slip, can adopt by metal or glass and make; Read head left end stage clip provides confining force by bulb is top to the indication grating seat, and jackscrew can be finely tuned the size of confining force; The force direction of grating chi and spring steel wire in angle of 45 degrees; The limited block scope of activities that stretch out at indication grating seat two ends is limited in the groove at read head two ends.
Description of drawings: Fig. 1 is the utility model structural drawing
Fig. 2 is a side cutaway view
As shown in Figure 1: the sphere screw (12) that is threaded is arranged on the right-hand member extension arm of read head (1), extrude bulb top (8) at read head left end extension arm compression spring (7) and contact, the metal optical flat plane (11) of indication grating seat (10) right-hand member is contacted with sphere screw (12) rigidity of read head (1) right-hand member with the metal optical flat plane (9) of indication grating seat (10) left end.Can freely rotate between indication grating seat (10) and the read head (1) like this with interior perpendicular to the slip on the direction of motion among a small circle, and stage clip (7) promotes acting force that (or drag) indication grating seat (10) along grating chi (5) move to the confining force that indication grating seat (10) applies greater than read head (1) by bulb top (8).Simultaneously, the acting force that the spring steel wire (2) that is stretched out by read head (1) left end applies to indication grating seat (10) middle part, make indication grating seat (10) press to grating chi (5) because the force direction that adds of spring steel wire (2) becomes miter angle with grating chi (5), (as shown in Figure 2), can resolve into a power that is parallel to grating chi lines, a power perpendicular to grating chi delineation face.Angle and gap that these two power make indication grating (13) and grating chi (5) can keep the grating Moire fringe well.Limited block (3) prevents that in the scope of activities of indication grating seat (10) two ends restriction indication grating seats (10) indication grating seat (10) breaks away from read head (1) under the effect of spring steel wire (2).
The utility model is compared prior art and is had following advantage:
1, read head (1) relatively do rectilinear motion and make by grating chi (5) and chi shell (6), read head (1) is to be finished by sphere screw (12) on the read head (1) and being rigidly connected of optical flat plane (11) on the indication grating seat (10) with the drive connection of indication grating seat (10), read head (1) other end stage clip (7) acts on the optical flat plane (9) of indication grating seat (10) by bulb top (8) confining force simultaneously, sphere screw (12) is remained with optical flat plane (11) contact, jackscrew (4) can be finely tuned the size of confining force.
2, read head (1) is exerted pressure to indication grating seat (10) by spring steel wire (2), and the grating chis (5) that make indication grating (13) and 45 degree that tilt on the indication grating seat (10) keep relative stability aspect two in angle and grating gap.
3, by above measure, read head (1) and the transmission of indication grating seat (10) in being connected and afterburning separating, eliminated because of the not parallel error that causes of relative motion between read head (1) and the grating chi (5), gap, angle is stable between maintenance grating chi (5) and the indication grating (13).
Claims (5)
1, the connection gearing of optical grid line displacement sensor, read head moves relative to the grating chi, produce moire frange signal, electrooptical device output shift quantity electric signal on read head, the right-hand member extension arm that it is characterized in that read head (1) is rigidly connected with the bonding optical flat plane (11) of sphere screw (12) that is threaded and indication grating seat (10) right-hand member under read head (1) left end stage clip (7) top by bulb (8) pressure, bulb top (8) stage clip (7) effect down with optical flat plane (9) Elastic Contact of indication grating seat (10) left end, have spring steel wire to stretch out in the middle part of the indication grating seat and exert pressure from the read head left end.
2, the connection gearing of optical grid line displacement sensor as claimed in claim 1, it is characterized in that optical flat plane (9), (11) can freely be rotated when contacting with sphere screw (12) top with bulb (8) and with the direction of motion vertical plane on slip, can adopt by metal or glass and make
8, the gearing of optical grid line displacement sensor as claimed in claim 1 it is characterized in that read head (1) left end stage clip (7) provides confining force by bulb top (8) to indication grating seat (10), and jackscrew (4) can be finely tuned the size of confining force.
4, the connection gearing of optical grid line displacement sensor as claimed in claim 1, the force direction that it is characterized in that grating chi (5) and spring steel wire (2) in angle of 45 degrees.
5, the connection gearing of optical grid line displacement sensor as claimed in claim 1 is characterized in that limited block (3) scope of activities of stretching out at indication grating seat (10) two ends is limited in the groove at read head (1) two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205503 CN2320981Y (en) | 1997-11-28 | 1997-11-28 | Connecting transmission device of grating linear displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205503 CN2320981Y (en) | 1997-11-28 | 1997-11-28 | Connecting transmission device of grating linear displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2320981Y true CN2320981Y (en) | 1999-05-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97205503 Expired - Fee Related CN2320981Y (en) | 1997-11-28 | 1997-11-28 | Connecting transmission device of grating linear displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2320981Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359760A (en) * | 2011-08-22 | 2012-02-22 | 广东万濠精密仪器股份有限公司 | Soft-collision grating scale and measuring method thereof |
| CN102607419A (en) * | 2012-03-30 | 2012-07-25 | 中国科学院长春光学精密机械与物理研究所 | Positioning and splicing device of indicating grating |
| CN103925873A (en) * | 2014-03-27 | 2014-07-16 | 中国科学院长春光学精密机械与物理研究所 | Indication optical grating positioning and bonding device |
| CN107063315A (en) * | 2017-01-10 | 2017-08-18 | 广州市精谷智能科技有限公司 | A kind of linear encoder reading head eliminates the structure in gap |
| CN107525470A (en) * | 2017-10-17 | 2017-12-29 | 东莞市普迈精密测量科技有限公司 | A kind of grating displacement sensor |
| CN108195412A (en) * | 2018-03-26 | 2018-06-22 | 广州市精谷智能科技有限公司 | A kind of linear encoder reading head for eliminating gap |
| CN108214105A (en) * | 2017-12-30 | 2018-06-29 | 苏州欧鹏自动化设备有限公司 | The fixed structure of grating scale |
-
1997
- 1997-11-28 CN CN 97205503 patent/CN2320981Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359760A (en) * | 2011-08-22 | 2012-02-22 | 广东万濠精密仪器股份有限公司 | Soft-collision grating scale and measuring method thereof |
| CN102607419A (en) * | 2012-03-30 | 2012-07-25 | 中国科学院长春光学精密机械与物理研究所 | Positioning and splicing device of indicating grating |
| CN102607419B (en) * | 2012-03-30 | 2014-03-12 | 中国科学院长春光学精密机械与物理研究所 | Positioning and splicing device of indicating grating |
| CN103925873A (en) * | 2014-03-27 | 2014-07-16 | 中国科学院长春光学精密机械与物理研究所 | Indication optical grating positioning and bonding device |
| CN103925873B (en) * | 2014-03-27 | 2016-07-06 | 中国科学院长春光学精密机械与物理研究所 | Indication grating positioning bonding device |
| CN107063315A (en) * | 2017-01-10 | 2017-08-18 | 广州市精谷智能科技有限公司 | A kind of linear encoder reading head eliminates the structure in gap |
| CN107063315B (en) * | 2017-01-10 | 2023-05-30 | 广州市精谷智能装备有限公司 | Structure for eliminating gap of reading head of linear encoder |
| CN107525470A (en) * | 2017-10-17 | 2017-12-29 | 东莞市普迈精密测量科技有限公司 | A kind of grating displacement sensor |
| CN107525470B (en) * | 2017-10-17 | 2023-12-26 | 东莞市普迈精密测量科技有限公司 | Grating displacement sensor |
| CN108214105A (en) * | 2017-12-30 | 2018-06-29 | 苏州欧鹏自动化设备有限公司 | The fixed structure of grating scale |
| CN108195412A (en) * | 2018-03-26 | 2018-06-22 | 广州市精谷智能科技有限公司 | A kind of linear encoder reading head for eliminating gap |
| CN108195412B (en) * | 2018-03-26 | 2024-02-20 | 广州市精谷智能装备有限公司 | Linear encoder reading head capable of eliminating gap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |