CN204831201U - It draws linear displacement sensor to cascade hybrid - Google Patents
It draws linear displacement sensor to cascade hybrid Download PDFInfo
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- CN204831201U CN204831201U CN201520437608.0U CN201520437608U CN204831201U CN 204831201 U CN204831201 U CN 204831201U CN 201520437608 U CN201520437608 U CN 201520437608U CN 204831201 U CN204831201 U CN 204831201U
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- gear
- displacement sensor
- interference fit
- rotating shaft
- planet
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Abstract
The utility model discloses an it draws linear displacement sensor to cascade hybrid, the one end in even photoelectric coding dish pivot is installed with the interference fit mode to the photoelectric coding dish, the one end in even gray code coding disc pivot is installed with the interference fit mode to the gray code coding disc, even the one end of photoelectric coding dish pivot is connected with the reel, the other end in even photoelectric coding dish pivot is installed with the interference fit mode to the driving gear, driven gear installs on the planet carrier with the interference fit mode, the planet carrier cup joints at the planetary gear connecting axle outsidely, it cup joints the outside at the planet carrier to link the pivot of gray code coding disc, a planetary gear and the 2nd planetary gear install the both ends at the planetary gear connecting axle with the interference fit mode, the driving gear meshes with a planetary gear mutually, driven gear and the 2nd planetary gear mesh mutually. The utility model discloses under the condition that does not increase photoelectric coding dish raster count, the measurement accuracy that linear displacement sensor was drawn to the increment formula has been improved greatly.
Description
Technical field
The utility model belongs to measuring accuracy high redundancy stay wire displacement sensor field, particularly relates to the hybrid stay wire displacement sensor of a kind of cascade.
Background technology
Mechanical displacement can be converted to the electric signal of gageable, linear ratio by machining and the stay-supported type displacement sensor that in manufacturing, application measurement length and displacement adopts.Increment type stay wire displacement sensor is a sensor type wherein, and its precision is subject to code-wheel flatness, the lithographic technique of grid stroke, center of circle degree during rotation, integral rigidity, the impact of vibration and temperature is very large, and the measuring accuracy how improving angular transducer is a complex art problem.Under the design of increment type stay wire displacement sensor physical construction and all quite ripe precondition of signal circuit, the lithographic technique improving sensor is vital.When under the condition at given code-wheel radius, the number of grid stroke etching is more, then its precision that can measure is then higher.Because the lithographic technique of grating is limited, more increase grid stroke number, only have the radius increasing code-wheel.But along with product size requirement microminiaturization, the radius of code-wheel not only can not increase, and will reduce on the contrary, this must make stay-supported type displacement sensor go to improve measuring accuracy.
When the radius of traditional increment type stay wire displacement sensor code-wheel is determined, only have the etching precision by improving grating, what namely grating can only be etched is thinner, could increase the number of grating.But lithographic technique is limited, the code-wheel of given radius, this is by the urgent need to seeking additive method to improve the precision of angular transducer.
Utility model content
In order to overcome conventional delta formula stay wire displacement sensor code-wheel at radius under stable condition, need by improving grating etching precision and increasing grating quantity to improve the problem of its measuring accuracy, the utility model proposes the hybrid stay wire displacement sensor of a kind of cascade, improve the measuring accuracy of displacement transducer.
The utility model solves the technical scheme that its technical matters adopts: provide a kind of cascade hybrid stay wire displacement sensor, comprise photoelectric coded disk, gray encoding dish, driving gear, follower gear, connect photoelectric coded disk rotating shaft, connect the rotating shaft of gray encoding dish, first planet gear, planet wheel coupling shaft, second planet wheel, planet carrier, wherein, photoelectric coded disk is arranged on the one end connecting photoelectric coded disk rotating shaft with interference fit, gray encoding dish is arranged on the one end connecting the rotating shaft of gray encoding dish with interference fit, the one end connecting photoelectric coded disk rotating shaft is connected with reel, driving gear is arranged on the other end connecting photoelectric coded disk rotating shaft with interference fit, follower gear is arranged on planet carrier with interference fit, it is outside that planet carrier is socketed in planet wheel coupling shaft, connect the outside that the rotating shaft of gray encoding dish is socketed in planet carrier, first planet gear and the second planet wheel are arranged on the two ends of planet wheel coupling shaft with interference fit, driving gear is meshed with first planet gear, follower gear is meshed with the second planet wheel, connecting photoelectric coded disk rotating shaft is arranged on the bearing of the hybrid stay wire displacement sensor pedestal of cascade, connect the rotating shaft of gray encoding dish to be fixed in sensor base.
By technique scheme, driving gear and first planet gear are external toothing, and follower gear and the second planet wheel are external toothing, and need ensure assembly precision and transmission accuracy.
By technique scheme, the ratio of gear i=1/(2*N between photoelectric coded disk, gray encoding dish), namely photoelectric coded disk often turns over 1 grating, and gray encoding dish rotates a circle, and wherein N is photoelectric coded disk raster count.
By technique scheme, each for photoelectric coded disk grating subdivision is 2 by gray encoding dish
npart, wherein n is gray encoding dish code channel number.
By technique scheme, gray encoding dish code channel number scope is 5 ~ 13.Different measuring accuracy grades is obtained by selecting the gray encoding dish of different code channel number.
The beneficial effect that the utility model produces is: the gear train assembly of the hybrid stay wire displacement sensor of the utility model cascade is planet circular system kinematic train, carries out displacement measurement with two code-discs, and two code-discs are respectively photoelectric coded disk and gray encoding dish.The utility model passes through to increase large speed increasing ratio planet gear transmission system on stay-supported type displacement sensor basis, realize the further segmentation to grating each on photoelectric coded disk, when not increasing photoelectric coded disk raster count, substantially increase the measuring accuracy of increment type stay wire displacement sensor.Relative to the increment type stay wire displacement sensor low cost of manufacture of same measuring accuracy, structure is simple, be easy to processing and manufacturing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the Standard schematic diagram of the hybrid stay wire displacement sensor of the utility model embodiment cascade;
Fig. 2 is the structure diagram of the hybrid stay wire displacement sensor of the utility model embodiment cascade;
Fig. 3 is the left view of the hybrid stay wire displacement sensor of the utility model embodiment cascade;
Fig. 4 is the right view of the hybrid stay wire displacement sensor of the utility model embodiment cascade;
In accompanying drawing, 1-photoelectric coded disk, 2-gray encoding dish, 3-driving gear, 4-first planet gear, 5-second planet wheel, 6-follower gear, 7-connect photoelectric coded disk rotating shaft, 8-planet wheel coupling shaft, 9-connect the rotating shaft of gray encoding dish, 10-planet carrier.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In the utility model embodiment, there is provided a kind of cascade hybrid stay wire displacement sensor, as Figure 1-Figure 4, comprise photoelectric coded disk 1, gray encoding dish 2, driving gear 3, follower gear 6, connect photoelectric coded disk rotating shaft 7, connect gray encoding dish rotating shaft 9, first planet gear 4, planet wheel coupling shaft 8, second planet wheel 5, planet carrier 10, wherein, photoelectric coded disk is arranged on the one end connecting photoelectric coded disk rotating shaft with interference fit, gray encoding dish is arranged on the one end connecting the rotating shaft of gray encoding dish with interference fit, the one end connecting photoelectric coded disk rotating shaft is connected with reel, driving gear is arranged on the other end connecting photoelectric coded disk rotating shaft with interference fit, follower gear is arranged on planet carrier with interference fit, it is outside that planet carrier is socketed in planet wheel coupling shaft, connect the outside that the rotating shaft of gray encoding dish is socketed in planet carrier, first planet gear and the second planet wheel are arranged on the two ends of planet wheel coupling shaft with interference fit, driving gear is meshed with first planet gear, follower gear is meshed with the second planet wheel, connecting photoelectric coded disk rotating shaft is arranged on the bearing of the hybrid stay wire displacement sensor pedestal of cascade, connect the rotating shaft of gray encoding dish to be fixed in sensor base.
Further, driving gear and first planet gear are external toothing, and follower gear and the second planet wheel are external toothing, and need ensure assembly precision and transmission accuracy.
Further, in the hybrid stay wire displacement sensor of the present embodiment cascade, photoelectric coded disk, gray encoding dish kinematic train can select single order or multistage, ratio of gear i=1/(2*N wherein between photoelectric coded disk, gray encoding dish), namely photoelectric coded disk often turns over 1 grating, gray encoding dish rotates a circle, and wherein N is photoelectric coded disk raster count.
Further, each for photoelectric coded disk grating subdivision is 2 by gray encoding dish
npart, wherein n is gray encoding dish code channel number.Wherein, gray encoding dish code channel number scope is 5 ~ 13.Different measuring accuracy grades is obtained by selecting the gray encoding dish of different code channel number.
In the specific implementation process of the present embodiment, installation accuracy and the transmission accuracy of driving gear 3 and follower gear 6 need be ensured, to guarantee the precision of the hybrid stay wire displacement sensor of cascade.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to the utility model claims.
Claims (5)
1. the hybrid stay wire displacement sensor of cascade, it is characterized in that, comprise photoelectric coded disk, gray encoding dish, driving gear, follower gear, connect photoelectric coded disk rotating shaft, connect the rotating shaft of gray encoding dish, first planet gear, planet wheel coupling shaft, second planet wheel, planet carrier, wherein, photoelectric coded disk is arranged on the one end connecting photoelectric coded disk rotating shaft with interference fit, gray encoding dish is arranged on the one end connecting the rotating shaft of gray encoding dish with interference fit, the one end connecting photoelectric coded disk rotating shaft is connected with reel, driving gear is arranged on the other end connecting photoelectric coded disk rotating shaft with interference fit, follower gear is arranged on planet carrier with interference fit, it is outside that planet carrier is socketed in planet wheel coupling shaft, connect the outside that the rotating shaft of gray encoding dish is socketed in planet carrier, first planet gear and the second planet wheel are arranged on the two ends of planet wheel coupling shaft with interference fit, driving gear is meshed with first planet gear, follower gear is meshed with the second planet wheel, connecting photoelectric coded disk rotating shaft is arranged on the bearing of the hybrid stay wire displacement sensor pedestal of cascade, connect the rotating shaft of gray encoding dish to be fixed in sensor base.
2. the hybrid stay wire displacement sensor of cascade according to claim 1, is characterized in that, driving gear and first planet gear are external toothing, and follower gear and the second planet wheel are external toothing.
3. the hybrid stay wire displacement sensor of cascade according to claim 1 and 2, is characterized in that, the ratio of gear i=1/ (2*N) between photoelectric coded disk, gray encoding dish, wherein N is photoelectric coded disk raster count.
4. the hybrid stay wire displacement sensor of cascade according to claim 1 and 2, is characterized in that, each for photoelectric coded disk grating subdivision is 2 by gray encoding dish
npart, wherein n is gray encoding dish code channel number.
5. the hybrid stay wire displacement sensor of cascade according to claim 4, is characterized in that, gray encoding dish code channel number scope is 5 ~ 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437608.0U CN204831201U (en) | 2015-06-24 | 2015-06-24 | It draws linear displacement sensor to cascade hybrid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437608.0U CN204831201U (en) | 2015-06-24 | 2015-06-24 | It draws linear displacement sensor to cascade hybrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204831201U true CN204831201U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520437608.0U Expired - Fee Related CN204831201U (en) | 2015-06-24 | 2015-06-24 | It draws linear displacement sensor to cascade hybrid |
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| Country | Link |
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| CN (1) | CN204831201U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084815A (en) * | 2018-08-01 | 2018-12-25 | 广东工业大学 | A kind of adjustable absolute type encoder of the precision that code-disc is contactless |
| CN110285942A (en) * | 2019-07-01 | 2019-09-27 | 中国人民解放军陆军装甲兵学院 | The method for measuring planet row vibration |
-
2015
- 2015-06-24 CN CN201520437608.0U patent/CN204831201U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084815A (en) * | 2018-08-01 | 2018-12-25 | 广东工业大学 | A kind of adjustable absolute type encoder of the precision that code-disc is contactless |
| CN109084815B (en) * | 2018-08-01 | 2021-07-09 | 广东工业大学 | Absolute encoder with contactless code disc and adjustable precision |
| CN110285942A (en) * | 2019-07-01 | 2019-09-27 | 中国人民解放军陆军装甲兵学院 | The method for measuring planet row vibration |
| CN110285942B (en) * | 2019-07-01 | 2020-12-15 | 中国人民解放军陆军装甲兵学院 | Method for measuring vibration of planet row |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20170624 |