CN108267159A - High-precision angle coder structure - Google Patents
High-precision angle coder structure Download PDFInfo
- Publication number
- CN108267159A CN108267159A CN201810189036.7A CN201810189036A CN108267159A CN 108267159 A CN108267159 A CN 108267159A CN 201810189036 A CN201810189036 A CN 201810189036A CN 108267159 A CN108267159 A CN 108267159A
- Authority
- CN
- China
- Prior art keywords
- outer barrel
- shell
- circuit board
- inner tube
- mounting groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The present invention provides a kind of High-precision angle coder structure, including main shaft, shell, circuit board mount, wiring board, receiving sensor chip, encoder code disc, electrostriction pad, control assembly and temperature sensor；The main shaft includes the outer barrel and inner tube of coaxial arrangement, one end of said inner tube is connect with the inner bottom wall of the outer barrel, one end grafting of said inner tube is in the housing, one end of the shell is plugged in the gap between said inner tube and the outer barrel, and one end far from the outer barrel of said inner tube is connect with the encoder code disc；The circuit board mount is set on the inner wall of one end far from the outer barrel of the shell, one end far from the outer barrel of the circuit board mount is provided with mounting groove, one end of the electrostriction pad is mounted in the mounting groove, and the other end of the electrostriction pad is connect with the wiring board.
Description
Technical field
The present invention relates to field of precision measurement, more particularly to a kind of High-precision angle coder structure.
Background technology
Angular encoder is a kind of sensor for the detection of high-accuracy rotation angle, and high-accuracy angular encoder is extensive
For the occasions such as servo motor feedback, high-accuracy turntable, main shaft orientation.Angular encoder core component include encoder code disc and
Receiving sensor.Wherein, encoder code disc and receiving sensor are respectively arranged on encoder main shaft and circuit board mount.It receives
More's item that sensor is formed using the receiving sensor of reflection or transmitted light source after encoder code disc in the circuit board
Line generates sine wave signal, and is output on system processor, for the location information of feedback angle encoder.
On being normally applied, due to temperature change, encoder main shaft and circuit board mount will be caused to expand deformation.This
When be bonded in and lead to encoder code disc on encoder main shaft and installation and the relative distance of the wiring board on circuit board mount
It will shift, and distance between the two is to determine a key factor of code device signal quality.The sine wave of generation
The positional precision that signal quality will influence feedback, therefore, temperature change changes the positional precision for leading to encoder feedback.
Therefore, the prior art is defective, needs to improve.
Invention content
The embodiment of the present invention provides a kind of High-precision angle coder structure, can be with the inspection of High-precision angle coder structure
Survey accuracy.
The embodiment of the present invention provides a kind of High-precision angle coder structure, including main shaft, shell, circuit board mount, line
Road plate, receiving sensor chip, encoder code disc, electrostriction pad, control assembly and temperature sensor；
The main shaft includes the outer barrel of coaxial arrangement and inner tube, one end of said inner tube are connect with the inner bottom wall of the outer barrel,
One end grafting of said inner tube in the housing, between one end of the shell is plugged between said inner tube and the outer barrel
In gap, one end far from the outer barrel of said inner tube is connect with the encoder code disc；The circuit board mount is set to institute
It states on the inner wall of one end far from the outer barrel of shell, one end far from the outer barrel of the circuit board mount is provided with peace
Tankage, one end of the electrostriction pad are mounted in the mounting groove, the other end and the circuit of the electrostriction pad
Plate connects, the one side of the direction encoder code disc that the receiving sensor chip is set to the wiring board and with the volume
Code device code-disc is opposite, and the temperature sensor is set on the main shaft；
The control assembly is electrically connected with the electrostriction pad and the temperature sensor, and the control assembly is used for
The temperature detected according to the temperature sensor controls the voltage at the electrostriction pad both ends, so as to control described electroluminescent stretch
Contract the length along main shaft axial direction padded.
Description of the drawings
Fig. 1 is the structure diagram of the High-precision angle coder structure in the embodiment of the present invention.
Fig. 2 is the structure diagram of the main shaft of the High-precision angle coder structure in the embodiment of the present invention.
Fig. 3 is the structure diagram of the shell of the High-precision angle coder structure in the embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instructions such as needle ", " counterclockwise " are based on orientation shown in the drawings or position relationship, are for only for ease of
The description present invention and simplified description rather than instruction imply that signified device or element must be with specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.
" first " is defined as a result, and the feature of " second " can be expressed or implicitly includes one or more feature.
In description of the invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or electrical connection or can mutually communicate；It can be directly connected, it can also be by between intermediary
It connects connected, can be the interaction relationship of connection inside two elements or two elements.For the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature it " on " or it " under "
It can be in direct contact including the first and second features, it is not to be in direct contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " including first spy
Sign is right over second feature and oblique upper or is merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " immediately below second feature and obliquely downward or be merely representative of including fisrt feature
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Please refer to Fig. 1, the embodiment of the present invention provides a kind of High-precision angle coder structure, including shell 10, main shaft 20,
Circuit board mount 30, encoder code disc 40, electrostriction pad 50, control assembly, temperature sensor, receiving sensor chip 60,
Wiring board 70, elastomeric isolation set 80.
Wherein, referring to Fig. 2, which includes the outer barrel 21 of coaxial arrangement and inner tube 22, and inner tube 22 is in circle
Tubulose, the outer barrel 21 are cylindrical.One end of the inner tube 22 is connect with the inner bottom wall of the outer barrel 21, and the other end of the inner tube 22 is inserted
It is connected in shell 10.One end of shell 10 is plugged in the gap between inner tube 22 and outer barrel 21, the separate outer barrel 21 of inner tube 22
One end connect with encoder code disc 40；Circuit board mount 30 is set to the inner wall of one end of separate institute's outer barrel 21 of shell 10
On, one end of the separate outer barrel 21 of circuit board mount 30 is provided with mounting groove, and one end of electrostriction pad 50 is mounted on the peace
In tankage, the other end of the electrostriction pad 50 is connect with the wiring board 70, and the receiving sensor chip 60 is set to
The one side of the direction encoder code disc 40 of the wiring board 70 is simultaneously opposite with the encoder code disc 40, the temperature sensing
Device is set on the main shaft.The mutual elasticity of madial wall of the lateral wall and the shell 10 of elastomeric isolation set 80 is supported.
Wherein, which is connect with the encoder code disc 40 using binding agent.
Wherein, control assembly is electrically connected with electrostriction pad 50 and temperature sensor, and control assembly is used for basis
The temperature that the temperature sensor detects controls the voltage at 50 both ends of electrostriction pad, so as to control the electrostriction
The length axial along the main shaft 20 of pad 50.
Wherein, which sets according to the coefficient of expansion being affected by temperature of the main shaft 20 and circuit board mount 30
When the temperature for receiving temperature sensor detection, electrostriction pad 50 is supplied to according to the function to control for a fixed function
Voltage swing, so as to control the length of electrostriction pad 50.When temperature is higher, main shaft 20 and circuit board mount 30 expand
When, the length of electrostriction pad 50 is smaller.When temperature is relatively low, and main shaft 20 and circuit board mount 30 are shunk, electrostriction pad
50 length is larger.So that the testing result of High-precision angle coder structure is not acted upon by temperature changes, so as to
To improve the accuracy of detection.
The main shaft 20, circuit board mount 30 are made of identical material so that it is with identical effect of expanding with heat and contract with cold.
Specifically, which is in ladder tubulose.Circuit board mount 30 is connected through a screw thread with the shell 10.Or
Person, circuit board mount 30 are connected with the shell 10 interference fit.
Circuit board mount 30 includes being connected with each other and the first connecting tube 31 and the second connecting tube 32 of coaxial arrangement, described
The radius of first connecting tube 31 is more than the radius of second connecting tube 32, and first connecting tube 31 connects with the shell 10
It connects, pre-determined distance is spaced between second connecting tube 32 and the madial wall of the shell 10；The mounting groove is set to the second company
On one end far from first connecting tube 31 of take over 32.
Referring to Fig. 3, shell 10 includes being connected with each other and the third connecting tube 11 and the 4th of coaxial arrangement connects
Pipe 22, one end of the third connecting tube 11 of shell 10 are plugged in the gap between inner tube 22 and outer barrel 21.
In some embodiments, High-precision angle coder structure further includes first electrode layer and the second electrode lay.The
One electrode layer is set on the bottom wall of the mounting groove on circuit board mount 30, and the second electrode lay is set on wiring board 70,
The control assembly is electrically connected respectively with the first electrode layer and the second electrode lay, the first electrode layer and the second electricity
Both ends of the pole layer respectively with the electrostriction pad 50 are electrically connected.First electrode layer and the second electrode lay are silver-coated electrode
Layer.
In some embodiments, control assembly includes control chip and driving circuit, the control chip and
Driving circuit may be contained on the wiring board 70, and the control chip is electrically connected with the driving circuit, the driving
Circuit is electrically connected with the first electrode layer and the second electrode lay.
In some embodiments, the quantity of mounting groove is two, and the electrostriction pad 50 is two and difference
It is in the form of a column.
In some embodiments, the quantity of mounting groove is one, and the quantity of the electrostriction pad 50 is 1, the peace
Tankage is annular in shape, and the electrostriction pad 50 is annular in shape.
In some embodiments, it is provided with limiting on the end face of one end of the direction of the circuit board mount wiring board 70
It sells, is provided with limit hole on the corresponding wiring board, which can axially slidably be plugged on limiting along limit hole
Kong Zhong, so as to fulfill the limiting to wiring board.
In the description of this specification, reference term " embodiment ", " is schematically implemented " certain embodiments "
The description of mode ", " example ", " specific example " or " some examples " etc. means with reference to the embodiment or example description
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the present invention.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can in an appropriate manner combine in any one or more embodiments or example.
In conclusion although the present invention is disclosed above with preferred embodiment, above preferred embodiment is not to limit
The system present invention, those of ordinary skill in the art without departing from the spirit and scope of the present invention, can make various changes and profit
Decorations, therefore protection scope of the present invention is subject to the range that claim defines.
Claims (8)
1. a kind of High-precision angle coder structure, which is characterized in that including main shaft, shell, circuit board mount, wiring board, connect
Receive sensor chip, encoder code disc, electrostriction pad, control assembly and temperature sensor；
The main shaft includes the outer barrel of coaxial arrangement and inner tube, one end of said inner tube are connect with the inner bottom wall of the outer barrel,
In the housing, one end of the shell is plugged between said inner tube and the outer barrel for the other end grafting of said inner tube
In gap, one end far from the outer barrel of said inner tube is connect with the encoder code disc；The circuit board mount is set to
On the inner wall of one end far from the outer barrel of the shell, one end far from the outer barrel of the circuit board mount is provided with
Mounting groove, one end of the electrostriction pad are mounted in the mounting groove, the other end and the line of the electrostriction pad
The connection of road plate, the one side of the direction encoder code disc that the receiving sensor chip is set to the wiring board and with it is described
Encoder code disc is opposite, and the temperature sensor is set on the main shaft；
The control assembly is electrically connected with the electrostriction pad and the temperature sensor, and the control assembly is used for
The temperature detected according to the temperature sensor controls the voltage at the electrostriction pad both ends, so as to control described electroluminescent stretch
Contract the length along main shaft axial direction padded；
Spacer pin is provided on the end face of one end of the direction of the circuit board mount wiring board, is set on the corresponding wiring board
Be equipped with limit hole, the spacer pin being axially slidably plugged in limit hole along limit hole, so as to fulfill to wiring board
Limiting；
The material identical of the main shaft and the circuit board mount.
2. High-precision angle coder structure according to claim 1, which is characterized in that further include elastomeric isolation set, institute
State elastomeric isolation set and be socketed in said inner tube and be inserted on one end of the shell, the lateral wall of the elastomeric isolation set with it is described outer
The mutual elasticity of madial wall of shell is supported.
3. High-precision angle coder structure according to claim 1, which is characterized in that the shell is in ladder tubulose.
4. High-precision angle coder structure according to claim 1, which is characterized in that the circuit board mount includes phase
The first connecting tube and the second connecting tube for connecting and being coaxially disposed, the radius of first connecting tube are more than described second and connect
The radius taken over, first connecting tube and the cage connection, between second connecting tube and the madial wall of the shell
It is spaced pre-determined distance；
The mounting groove is set on one end far from first connecting tube of second connecting tube.
5. High-precision angle coder structure according to claim 1, which is characterized in that further include first electrode layer and
The second electrode lay, the first electrode layer are set on the bottom wall of the mounting groove, and the second electrode lay is set to the line
On the plate of road, the control assembly is electrically connected respectively with the first electrode layer and the second electrode lay, the first electrode layer with
And both ends of the second electrode lay respectively with the electrostriction pad are electrically connected.
6. High-precision angle coder structure according to claim 7, which is characterized in that the control assembly includes control
Chip and driving circuit, it is described control chip and driving circuit may be contained on the wiring board, it is described control chip with
The driving circuit electrical connection, the driving circuit are electrically connected with the first electrode layer and the second electrode lay.
7. High-precision angle coder structure according to claim 1, which is characterized in that the quantity of the mounting groove is two
A, the electrostriction pad is two and is in the form of a column respectively.
8. High-precision angle coder structure according to claim 1, which is characterized in that the quantity of the mounting groove is one
A, the quantity of the electrostriction pad is 1, and the mounting groove is annular in shape, and the electrostriction pad is annular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189036.7A CN108267159A (en) | 2018-03-08 | 2018-03-08 | High-precision angle coder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189036.7A CN108267159A (en) | 2018-03-08 | 2018-03-08 | High-precision angle coder structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108267159A true CN108267159A (en) | 2018-07-10 |
Family
ID=62774731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810189036.7A Withdrawn CN108267159A (en) | 2018-03-08 | 2018-03-08 | High-precision angle coder structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108267159A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931226A (en) * | 2018-07-20 | 2018-12-04 | 朱浩东 | High-accuracy measurement angle coder structure |
| CN108931227A (en) * | 2018-07-20 | 2018-12-04 | 朱浩东 | High-accuracy measurement angle encoder |
| CN109084824A (en) * | 2018-07-28 | 2018-12-25 | 张健 | Angular encoder structure |
-
2018
- 2018-03-08 CN CN201810189036.7A patent/CN108267159A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931226A (en) * | 2018-07-20 | 2018-12-04 | 朱浩东 | High-accuracy measurement angle coder structure |
| CN108931227A (en) * | 2018-07-20 | 2018-12-04 | 朱浩东 | High-accuracy measurement angle encoder |
| CN109084824A (en) * | 2018-07-28 | 2018-12-25 | 张健 | Angular encoder structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180710 |