CN202421202U - High-precision rotary encoder - Google Patents
High-precision rotary encoder Download PDFInfo
- Publication number
- CN202421202U CN202421202U CN2012200252314U CN201220025231U CN202421202U CN 202421202 U CN202421202 U CN 202421202U CN 2012200252314 U CN2012200252314 U CN 2012200252314U CN 201220025231 U CN201220025231 U CN 201220025231U CN 202421202 U CN202421202 U CN 202421202U
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- China
- Prior art keywords
- circuit board
- code
- wheel
- rotating shaft
- rotary encoder
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Abstract
The utility model discloses a high-precision rotary encoder which comprises a bearing pedestal, wherein a rotating shaft is supported by first bearings and second bearings of the bearing pedestal, which are arranged at intervals; an end cover and a circuit board are fixed on the bearing pedestal; M pairs of photoelectric sensors are arranged on the circuit board at intervals; each pair of photoelectric sensors is arranged at an interval along the radial direction of the circuit board; the rotating shaft penetrates through the circuit board, and an encoding disk corresponding to the circuit board is fixed at the penetrating end of the rotating shaft; N light shielding blocks are uniformly distributed on the edge of the encoding disk along the circumferential direction; when the encoding disk rotates, the light shielding blocks can be spaced in the radial direction of each pair of photoelectric sensors; an included angle between two adjacent pairs of photoelectric sensors meets the following condition of X=a*(360/N)+1, wherein X is the included angle, a is a natural number, and N is the number of the light shielding blocks; a sealing cover is arranged on one side of the bearing pedestal, which is positioned on the encoding disk; the circuit board and the encoding disk are positioned in the sealing cover; and a lead passing hole is formed in the sealing cover. The interference resistance and the data reliability of the high-precision rotary encoder are greatly improved, and the requirement on high-precision and high-rotation-speed measurement can be met.
Description
Technical field
The utility model relates to a kind of scrambler, particularly relates to a kind of rotary encoder of measurement mechanical axle high precision rotating speed.
Background technology
In the prior art, the scrambler of measurement mechanical axle rotating speed is generally incremental encoder.Incremental encoder is that displacement conversion is become periodic electric signal, is transformed into count pulse to this electric signal again, representes the size of displacement with the number of pulse.Increment of rotation formula scrambler is the output pulse when rotating, and knows its position through counting equipment, and is motionless or when having a power failure when scrambler, relies on the memory internal of counting equipment to remember the position.Like this, after having a power failure, scrambler can not have any moving; When incoming call work, in the scrambler output pulse process, can not have and disturb and pulse-losing; Not so; Will squint the zero point of counting equipment memory, and the amount of this skew is unable to find out, and only vicious production result just can know after occurring.And the increment type pulse is virtual, and the number of pulses of collection is limited, so measuring accuracy is not high.On the other hand, the structure more complicated of increment of rotation formula scrambler.
Therefore those skilled in the art to be devoted to develop a kind of antijamming capability strong, the reliable rotary encoder of data.
The utility model content
Because the above-mentioned defective of prior art, it is strong that the utility model technical matters to be solved provides a kind of antijamming capability, the reliable rotary encoder of data.
For realizing above-mentioned purpose, the utility model provides a kind of high precision rotary encoder, comprises bearing seat; Said bearing seat is supported with rotating shaft through the clutch shaft bearing and second bearing that is provided with at interval;
First end of said bearing seat is fixedly connected with end cap, and the second end end face is fixedly connected with circuit board;
Said circuit board is along circumferentially being arranged at intervals with M to photoelectric sensor; The spaced radial setting of every pair of said circuit board in photoelectric sensor edge;
Said rotating shaft is passed said circuit board and is fixed with and the corresponding code-wheel of said circuit board at its traversing through end; The edge of said code-wheel along the circumferential direction is uniformly distributed with and is provided with N light-blocking block; When said code-wheel rotated, said light-blocking block can be through the spaced radial of every pair of photoelectric sensor;
The size of the angle between adjacent two pairs of photoelectric sensors meets the following conditions:
；
Wherein, X is the size of said angle, and a is a natural number, and N is the quantity of said light-blocking block;
Said bearing seat is provided with gland bonnet being positioned at said code-wheel one side;
Said circuit board and code-wheel are positioned at said gland bonnet; Said gland bonnet is provided with the lead via hole.
Preferable, said code-wheel is provided with 60 said light-blocking blocks; Said circuit board is provided with 6 pairs of said photoelectric sensors; The angle of adjacent two pairs of photoelectric sensors is 19 °.
Preferable, the width of each light-blocking block is 5.2 °.
Preferable, the external part of said rotating shaft is provided with first link slot and second link slot that is perpendicular to one another.
The beneficial effect of the utility model is: the utility model is owing to pass through the uniqueness of each position of mechanical location decision of code-wheel; Need not memory; Need not to look for RP, and need not count always, can confirm code-disc and encoder position in real time; Therefore the noiseproof feature of scrambler, the reliability of data are improved greatly, can satisfy the high tachometric survey of high precision.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is that the A of Fig. 1 is to zoomed-in view.
Fig. 3 is that the B of Fig. 1 is to zoomed-in view.
Fig. 4 be in the utility model one embodiment code-disc face structural representation.
Fig. 5 is that the position of circuit board and photoelectric sensor concerns synoptic diagram in the utility model one embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
To shown in Figure 5, a kind of high precision rotary encoder comprises bearing seat 1 like Fig. 1, and bearing seat 1 is supported with rotating shaft 4 through the clutch shaft bearing 2 and second bearing 3 that is provided with at interval.Be provided with end ring 13. between the clutch shaft bearing 2 and second bearing 3
First end of bearing seat 1 is fixedly connected with end cap 5, the second end end faces and is fixedly connected with circuit board 6.Rotating shaft 4 is provided with the first link slot 12a and the second link slot 12b that is perpendicular to one another at the external part 4a of end cap 5, so that it is clamped on the rotating machinery axial workpiece, can realize scrambler rotation synchronous with it after fixing.
In the present embodiment, circuit board 6 directly is fixedly connected with bearing seat 1, in other embodiments, also can end cap be set in bearing seat 1 corresponding circuits plate 6 one sides, and circuit board 6 is fixedly connected with end cap, to reach essentially identical technique effect.
Circuit board 6 is along circumferentially being arranged at intervals with M to photoelectric sensor 7, and M is a natural number, and the every pair of photoelectric sensor is along the spaced radial setting of circuit board 6.
Rotating shaft 4 is passed circuit board 6 and is had and circuit board 6 corresponding code-wheels 8 through bolt at its traversing through end 4b, and the edge of code-wheel 8 along the circumferential direction is uniformly distributed with and is provided with N light-blocking block 11, and N is a natural number.During code-wheel 8 rotations, light-blocking block 11 can be through the spaced radial of every pair of photoelectric sensor 7.Constitute light tank 14 between the adjacent light-blocking block 11.In other embodiments, also can with the fixing usual manner of axial workpiece code-wheel be connected with rotating shaft 4 through other hole type parts.
The size of the included angle A between adjacent two pairs of photoelectric sensors 7 meets the following conditions:
Bearing seat 1 is provided with gland bonnet 9 being positioned at code-wheel 8 one sides, and circuit board 6 is positioned at gland bonnet 9 with code-wheel 8, and gland bonnet 9 is provided with lead via hole 10.
In the present embodiment; Getting the N value is 60, and the width of each light-blocking block is 5.2 °, in other embodiments; N also can be other natural numbers; As 10,30,40,45,56,70,88,90,92,100,120 etc., can be but be preferably by 360 natural numbers of dividing exactly, to reach essentially identical technique effect; Getting the M value is 6, and in other embodiments, M also can be other natural numbers, as 1,2,3,4,5,7,8,9 etc., to reach essentially identical technique effect; For ease of the layout of photoelectric sensor, getting a value is 3, and therefore the angle between adjacent two pairs of photoelectric sensors is 19 °; In other embodiments; A also can be other natural numbers beyond 3, as 1,2,4,5,6 etc., to reach essentially identical technique effect.
During rotary encoder work, rotating shaft 4 rotating machinery axial workpieces are connected, after circuit board 6 energisings, photoelectric sensor 7 continues luminous.Thereby rotating shaft 4 rotations drive code-wheel 8 rotations, are alternately blocked once by code-disc when the light of every pair of photoelectric sensor 7 is every, then export the corresponding pulses signal, accomplish counting.Therefore, whenever the rotate a circle number of pulses exported of code-wheel 8 is individual for
.In the present embodiment; Every pair of photoelectric sensor 7 all can produce 6 ° continuous impulse at interval; And then after oversampling circuit amplifies that shaping is synthetic to wait processings be a string continuous impulse of 1 ° with regard to the ability output gap; Just revolution can produce 360 pulses, and resolution is 1 degree, and precision is relevant with the precision of photoelectric sensor installation site with the machining precision of code-wheel.
Ifs circuit plate 7 sudden power because therefore the uniqueness of each position of the mechanical location of code-wheel 8 decision need not memory, need not to look for RP, and need not count always, promptly can confirm the position of code-wheel and scrambler in real time.
More than describe the preferred embodiment of the utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art according to the design of the utility model on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in determined protection domain by claims.
Claims (4)
1. a high precision rotary encoder is characterized in that: comprise bearing seat (1); Said bearing seat (1) is supported with rotating shaft (4) through clutch shaft bearing (2) and second bearing (3) that is provided with at interval;
First end of said bearing seat (1) is fixedly connected with end cap (5), and the second end end face is fixedly connected with circuit board (6);
Said circuit board (6) is along circumferentially being arranged at intervals with M (M is a natural number) to photoelectric sensor (7); The spaced radial setting of every pair of photoelectric sensor said circuit board in edge (6);
Said rotating shaft (4) is passed said circuit board (6) and is fixed with and the corresponding code-wheel of said circuit board (6) (8) at its traversing through end (4b); The edge of said code-wheel (8) along the circumferential direction is uniformly distributed with and is provided with N (N is a natural number) individual light-blocking block (11); During said code-wheel (8) rotation, said light-blocking block (11) can be through the spaced radial of every pair of photoelectric sensor (7);
The size of the angle (A) between adjacent two pairs of photoelectric sensors (7) meets the following conditions:
Said bearing seat (1) is provided with gland bonnet (9) being positioned at said code-wheel (8) one sides;
Said circuit board (6) and code-wheel (8) are positioned at said gland bonnet (9); Said gland bonnet (9) is provided with lead via hole (10).
2. high precision rotary encoder as claimed in claim 1 is characterized in that: said code-wheel (8) is provided with 60 said light-blocking blocks (11); Said circuit board (6) is provided with 6 pairs of said photoelectric sensors (7); The angle of adjacent two pairs of photoelectric sensors is 19 °.
3. high precision rotary encoder as claimed in claim 2 is characterized in that: the width of each said light-blocking block (11) is 5.2 °.
4. like claim 1 or 2 or 3 described high precision rotary encoders, it is characterized in that: the external part (4a) of said rotating shaft (4) is provided with first link slot (12a) and second link slot (12b) that is perpendicular to one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200252314U CN202421202U (en) | 2012-01-19 | 2012-01-19 | High-precision rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200252314U CN202421202U (en) | 2012-01-19 | 2012-01-19 | High-precision rotary encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421202U true CN202421202U (en) | 2012-09-05 |
Family
ID=46745955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200252314U Withdrawn - After Issue CN202421202U (en) | 2012-01-19 | 2012-01-19 | High-precision rotary encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421202U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539816A (en) * | 2012-01-19 | 2012-07-04 | 重庆百瑞斯德科技有限公司 | Rotary encoder |
| CN102981016A (en) * | 2012-12-14 | 2013-03-20 | 上海出入境检验检疫局机电产品检测技术中心 | Processing system and method for detecting rotating speed of rotating object |
| CN104579291A (en) * | 2015-01-07 | 2015-04-29 | 江苏华途数控科技有限公司 | Photoelectricity band switch |
| CN114933005A (en) * | 2022-06-06 | 2022-08-23 | 中国科学院沈阳自动化研究所 | Self-locking steering engine of autonomous underwater robot in deep sea |
-
2012
- 2012-01-19 CN CN2012200252314U patent/CN202421202U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539816A (en) * | 2012-01-19 | 2012-07-04 | 重庆百瑞斯德科技有限公司 | Rotary encoder |
| CN102981016A (en) * | 2012-12-14 | 2013-03-20 | 上海出入境检验检疫局机电产品检测技术中心 | Processing system and method for detecting rotating speed of rotating object |
| CN104579291A (en) * | 2015-01-07 | 2015-04-29 | 江苏华途数控科技有限公司 | Photoelectricity band switch |
| CN114933005A (en) * | 2022-06-06 | 2022-08-23 | 中国科学院沈阳自动化研究所 | Self-locking steering engine of autonomous underwater robot in deep sea |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20130807 |
|
| RGAV | Abandon patent right to avoid regrant |