CN106482769A - A kind of linear encoder shell keeps the structure of linearity under the conditions of expanding with heat and contract with cold - Google Patents
A kind of linear encoder shell keeps the structure of linearity under the conditions of expanding with heat and contract with cold Download PDFInfo
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- CN106482769A CN106482769A CN201611035538.1A CN201611035538A CN106482769A CN 106482769 A CN106482769 A CN 106482769A CN 201611035538 A CN201611035538 A CN 201611035538A CN 106482769 A CN106482769 A CN 106482769A
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- linear encoder
- hollow cylindrical
- contract
- elastic spring
- cold
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- 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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
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- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a kind of linear encoder shell keeps the structure of linearity under the conditions of expanding with heat and contract with cold, the straight-line groove, hollow cylindrical structure, elastic spring structure and the fastening structure that including the pore structure being opened on linear encoder shell, are arranged on linear encoder shell；Pore structure is centrally located on the line of rabbet joint of straight-line groove, hollow cylindrical structure passes through the pore structure on linear encoder shell, and match with pore structure, the flat section of elastic spring structure is adjacent with hollow cylindrical structure end face outside, outside elastic spring structure, bending inwardly is adjacent to linear encoder shell, fastening structure passes through elastic spring structure, hollow cylindrical structure and pore structure that linear encoder is fixed on equipment, after fastening there is elastic deformation in elastic spring structure, and elastic spring structure flat section is contacted with hollow cylindrical structure outer surface.The linear encoder shell of the present invention, under the conditions of expanding with heat and contract with cold, only can occur the deformation of the rectilinear direction along magnetic grid or grating.
Description
Technical field
The present invention relates to the research field of sensor, particularly to a kind of linear encoder shell under the conditions of expanding with heat and contract with cold
Keep the structure of linearity.
Background technology
The linear encoder of high-grade numerical control equipment is divided into grating scale and magnetic railings ruler according to its measuring principle.The guarantor of its certainty of measurement
Hold and depend on the linearity of its magnetic grid or grating to keep, but magnetic grid or grating are all to stick in encoder shell,
Therefore being maintained in installation and the operation of work backward of shell linearity suffers from material impact to encoder accuracy.In the past straight
Line coding device has only focused on its shell linearity in installation process and has kept, the shell straight line particularly under the influence of self gravitation
Degree keeps.But in work in the future runs, the change of temperature environment, lead to sheathing material to expand with heat and contract with cold, due to encoder
The stress that each position is born is inconsistent, and does not have corresponding structure to adjust, and this leads to encoder shell in the bar that expands with heat and contract with cold
The deformation of part is not along rectilinear direction residing for grating or magnetic grid, so that encoder system precise decreasing.Conventional straight line
Do not account for temperature environment during encoder enclosure designs and change the deformation leading to of expanding with heat and contract with cold, encoder is in use often
Situation that system accuracy decline to a great extent occurs.One kind is needed now to make linear encoder keep linearity in thermal boundary shrinkage condition
Structure.
Content of the invention
Present invention is primarily targeted at overcome the shortcoming of prior art with not enough, provide that a kind of structure is simple, design is closed
Reason, easy to use, can make linear encoder thermal boundary shrinkage condition keep linearity structure.
In order to achieve the above object, the present invention employs the following technical solutions：
A kind of linear encoder shell of the present embodiment keeps the structure of linearity under the conditions of expanding with heat and contract with cold, including opening up
In the pore structure on linear encoder shell, the straight-line groove that is arranged on linear encoder shell, hollow cylindrical structure, elasticity
Reed structure and fastening structure；Described pore structure is centrally located on the line of rabbet joint of straight-line groove, and described hollow cylindrical structure is worn
Cross the pore structure on linear encoder shell, and match with pore structure, the flat section of described elastic spring structure and hollow
Column structure end face outside is adjacent, and bending inwardly outside elastic spring structure is adjacent to linear encoder shell, described fastening structure
Through elastic spring structure, hollow cylindrical structure and pore structure, linear encoder is fixed on equipment, elastic spring after fastening
There is elastic deformation in chip architecture, elastic spring structure flat section is contacted with hollow cylindrical structure outer surface.
As preferred technical scheme, described pore structure two ends are arcuate structure, and mid portion is rectangular configuration.
As preferred technical scheme, the shell of linear encoder is provided with multiple pore structures, the position of multiple pore structures
With shell centrosymmetry.
As preferred technical scheme, the face of cylinder and the hole on linear encoder shell outside described hollow cylindrical structure
The rectangle part precision-fit of structure, and the thickness of hollow cylindrical structure is slightly larger than the thickness of pore structure.
As preferred technical scheme, the line of rabbet joint of described straight-line groove and the magnetic grid of linear encoder or grating rectilinear direction
Parallel.
As preferred technical scheme, the length of described straight-line groove is equal to the outer cover length of linear encoder.
As preferred technical scheme, described elastic spring structure centre position is provided with a circular port, and both sides are symmetrical, away from
The nearer bending of the heart bends outwards, and the bending farther out away from center bends inwardly, and bending minimum point inwardly is open and flat less than middle
Part, the vertical height away from middle flat section for the bending minimum point is more than the thickness difference of hollow cylindrical structure and pore structure inwardly.
After fastening there is elastic deformation in elastic spring structure, and elastic spring structure flat section is connected with hollow cylindrical structure outer surface
Touch.
As preferred technical scheme, described fastening structure is fixing screws.
The present invention compared with prior art, has the advantage that and beneficial effect：
1st, in the inventive solutions, after using fastening structure fastening, straight line is fixed by elastic spring and compiles
Code device chi shell, remains the space of relative displacement between linear encoder shell and trip bolt, hollow cylindrical structure simultaneously again
The outside face of cylinder makes linear encoder shell exist with the rectangle part precision-fit of the pore structure on linear encoder shell
The deformation of the rectilinear direction along magnetic grid or grating, under the conditions of expanding with heat and contract with cold, only can occur.
2nd, the structure of the present invention is simple, easy for installation, is conducive to heavy industrialization to apply.
Brief description
Fig. 1 is the structural representation at first visual angle of the present invention；
Fig. 2 is the structural representation at second visual angle of the present invention；
Fig. 3 is the upward view of the present invention；
Fig. 4 is the rearview of the present invention；
Fig. 5 is the front view of the present invention；
Fig. 6 is the top view of the present invention；
Fig. 7 is the sectional view of the present invention.
Drawing reference numeral explanation：1- pore structure；2- straight-line groove；3- hollow cylindrical structure；4th, elastic spring structure；5- fastens
Structure.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention do not limit
In this.
Embodiment
As shown in Fig. 1-Fig. 7, the present embodiment linear encoder shell keeps the structure of linearity under the conditions of expanding with heat and contract with cold
Including：The pore structure 1 on linear encoder shell, the straight-line groove 2 on linear encoder shell, hollow cylindrical structure 3,
Elastic spring structure 4 and fastening structure 5；The center center of circle of the pore structure 1 on the described shell in linear encoder is located at straight
On the line of rabbet joint of straight-line groove 2 on line coding device shell, hollow cylindrical structure 3 is passed through the pore structure on linear encoder shell
1, match with the pore structure 1 on linear encoder shell.Outside elastic spring structure 4 flat section and hollow cylindrical structure 3
Side end face is adjacent, and bending inwardly outside elastic spring structure 4 is adjacent to linear encoder shell.Fastening structure 5 passes through elastic spring
Linear encoder is fixed on equipment for structure 4, hollow cylindrical structure 3 and the pore structure on linear encoder shell 1, fastening
There is elastic deformation in elastic spring structure 4 afterwards, and elastic spring structure 4 flat section is connected with hollow cylindrical structure 3 outer surface
Touch.
Further, as shown in figure 4, the pore structure 1 on linear encoder shell is arcuate structure for two ends, middle is square
The structure of shape straight flange, rectangle straight flange is paralleled with magnetic grid or grating rectilinear direction, and the pore structure 1 of the present embodiment is circular arc for two ends
Shape structure, the middle structure for rectangle straight flange.Rectangle straight flange is parallel with magnetic grid or grating rectilinear direction can ensure that pore structure 1 with
After hollow round column structure 3 precision-fit, when chi shell expands with heat and contract with cold, its deformation direction all the time along rectangle straight flange, thus ensureing chi
The deformation direction when expanding with heat and contract with cold for the shell is consistent with the rectilinear direction of magnetic grid or grating all the time.The arc-shaped structure at two ends ensures
Hollow cylindrical structure 3 has enough spaces that relative movement occurs when chi shell expands with heat and contract with cold, and facilitates processing and manufacturing.
Further, the line of rabbet joint of straight-line groove 2 on linear encoder shell is paralleled with magnetic grid or grating rectilinear direction,
Its length is equal to the outer cover length of linear encoder.The convenient positioning in processing and manufacturing pore structure 1 of straight-line groove 2 is it is ensured that shell
The center of upper multiple pore structures 1 is all located on the same straight line parallel with magnetic grid or grating rectilinear direction.
Further, the rectangle straight flange of the hollow cylindrical structure 3 outside face of cylinder and the pore structure 1 on linear encoder shell
Part precision-fit, and the thickness of hollow cylindrical structure 3 is slightly larger than the thickness of the pore structure 1 on linear encoder shell.Directly
, according to depending on outer cover length, the position of pore structure 1 is with shell centrosymmetry for the quantity of the pore structure 1 on line coding device shell.In
The hollow round column structure 3 outside face of cylinder guarantees when chi shell expands with heat and contract with cold with the rectangle straight portion precision-fit of pore structure 1, its change
Shape direction is all the time along rectangle straight flange, thus ensureing that the deformation direction when expanding with heat and contract with cold for the chi shell is straight with magnetic grid or grating all the time
Line direction is consistent.The thickness of hollow cylindrical structure 3 is slightly larger than the thickness of pore structure 1 in order to ensure (to fix by fastening structure 5
Screw) fixed ruler shell when, fixing screws will not be allowed to directly act on chi shell, fixing dead chi shell position, for sending out when expanding with heat and contract with cold
The raw deformation along magnetic grid or grating rectilinear direction retains leeway.The quantity of pore structure 1 and position make installation with shell centrosymmetry
Rear casing each position uniform force is it is ensured that linear encoder precision.
Further, as shown in figure 3, the centre bit of described elastic spring structure 4 is equipped with a circular port, reed both sides are symmetrical,
Away from center, nearer bending bends outwards, and the bending farther out away from center bends inwardly, and bending minimum point inwardly is less than middle putting down
The part of exhibition, the vertical height away from middle flat section for the bending minimum point is more than the thickness of hollow cylindrical structure and pore structure inwardly
Difference.As shown in fig. 7, the form of elastic spring structure 4 make by the fixing hollow cylindrical structure 3 of fixing screws and chi shell it
Afterwards, you can with the elastic deformation fixed ruler shell using reed, will not thoroughly fix dead chi shell position, for occurring when expanding with heat and contract with cold again
Deformation along magnetic grid or grating rectilinear direction is allowed some leeway, it is to avoid chi shell occurs the deformation in other directions.
This specific embodiment can make fastening structure 5, and (this fastening structure can be selected for fixing screws or other fixing dresses
Put) after fastening, linear encoder chi shell is fixed by elastic spring 4, remain simultaneously again linear encoder shell with tight
The space of relative displacement between fixing structure 5, the hollow cylindrical structure 3 outside face of cylinder and the pore structure on linear encoder shell
1 rectangle part precision-fit makes linear encoder shell under the conditions of expanding with heat and contract with cold, and only can occur along magnetic grid or grating
The deformation of rectilinear direction.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not subject to above-described embodiment
Limit, other any spirit without departing from the present invention and the change made under principle, modification, replacement, combine, simplify,
All should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (8)
1. a kind of linear encoder shell keeps the structure of linearity it is characterised in that including opening up under the conditions of expanding with heat and contract with cold
In the pore structure (1) on linear encoder shell, the straight-line groove (2) that is arranged on linear encoder shell, hollow circuit cylinder knot
Structure (3), elastic spring structure (4) and fastening structure (5)；Described pore structure (1) is centrally located at the groove of straight-line groove (2)
On line, described hollow cylindrical structure (3) passes through the pore structure (1) on linear encoder shell, and matches with pore structure (1),
The flat section of described elastic spring structure (4) is adjacent with hollow cylindrical structure (3) end face outside, and elastic spring structure (4) is outward
Side bending inwardly is adjacent to linear encoder shell, and described fastening structure (5) passes through elastic spring structure (4), hollow cylindrical structure
(3) and linear encoder is fixed on equipment pore structure (1), after fastening there is elastic deformation, bullet in elastic spring structure (4)
Property reed structure (4) flat section is contacted with hollow cylindrical structure (3) outer surface.
2. linear encoder shell according to claim 1 keeps the structure of linearity under the conditions of expanding with heat and contract with cold, and it is special
Levy and be, described pore structure (1) two ends are arcuate structure, mid portion is structure, described rectangle straight flange and the magnetic of rectangle straight flange
Grid or grating rectilinear direction are parallel.
3. linear encoder shell according to claim 1 keeps the structure of linearity under the conditions of expanding with heat and contract with cold, and it is special
Levy and be, the shell of linear encoder is provided with multiple pore structures (1), and the position of multiple pore structures (1) is with shell centrosymmetry.
4. linear encoder shell according to claim 2 keeps the structure of linearity under the conditions of expanding with heat and contract with cold, and it is special
Levy and be, the rectangle part of the face of cylinder and the pore structure (1) on linear encoder shell outside described hollow cylindrical structure (3)
Precision-fit, and the thickness of hollow cylindrical structure (3) is slightly larger than the thickness of pore structure (1).
5. linear encoder shell according to claim 1 keeps the structure of linearity under the conditions of expanding with heat and contract with cold, and it is special
Levy and be, the described line of rabbet joint of straight-line groove (2) is paralleled with the magnetic grid of linear encoder or grating rectilinear direction.
6. linear encoder shell keeps the structure of linearity under the conditions of expanding with heat and contract with cold according to claim 1 or 5, its
It is characterised by, the length of described straight-line groove (2) is equal to the outer cover length of linear encoder.
7. linear encoder shell according to claim 1 keeps the structure of linearity under the conditions of expanding with heat and contract with cold, and it is special
Levy and be, described elastic spring structure (4) center is provided with a circular port, both sides are symmetrical, away from the nearer bending in center outwardly
Bending, the bending farther out away from center bends inwardly, and bending minimum point inwardly is less than middle open and flat part, and bending is minimum inwardly
The vertical height away from middle flat section for the point is more than the thickness difference of hollow cylindrical structure and pore structure, elastic spring structure after fastening
(4) there is elastic deformation, elastic spring structure (4) flat section is contacted with hollow cylindrical structure (3) outer surface.
8. linear encoder shell according to claim 1 keeps the structure of linearity under the conditions of expanding with heat and contract with cold, and it is special
Levy and be, described fastening structure (5) is fixing screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035538.1A CN106482769B (en) | 2016-11-23 | 2016-11-23 | A kind of linear encoder shell keeps the structure of straightness under the conditions of expanding with heat and contract with cold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035538.1A CN106482769B (en) | 2016-11-23 | 2016-11-23 | A kind of linear encoder shell keeps the structure of straightness under the conditions of expanding with heat and contract with cold |
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| Publication Number | Publication Date |
|---|---|
| CN106482769A true CN106482769A (en) | 2017-03-08 |
| CN106482769B CN106482769B (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611035538.1A Active CN106482769B (en) | 2016-11-23 | 2016-11-23 | A kind of linear encoder shell keeps the structure of straightness under the conditions of expanding with heat and contract with cold |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194777A (en) * | 2017-12-28 | 2018-06-22 | 长春禹衡光学有限公司 | A kind of erecting device of grating scale |
| CN110186377A (en) * | 2019-07-03 | 2019-08-30 | 长春禹衡光学有限公司 | A kind of grating scale and its ruler shell |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06288717A (en) * | 1993-02-11 | 1994-10-18 | Dr Johannes Heidenhain Gmbh | Division carrier |
| JPH08201020A (en) * | 1995-01-23 | 1996-08-09 | Nikon Corp | Moving value reader for measuring apparatus |
| US20030056387A1 (en) * | 2001-09-27 | 2003-03-27 | Mitutoyo Corporation | Unit-type linear displacement measuring apparatus, end fixture therefor, and fixing method using the same |
| CN1810445A (en) * | 2006-02-13 | 2006-08-02 | 广州市诺信数字测控设备有限公司 | Lengthened grating rule installing mechanism |
| CN201440170U (en) * | 2009-06-22 | 2010-04-21 | 广州市番禺奥迪威电子有限公司 | Housing of ultrasonic wave sensor with effectively-improved angle |
| CN102538676A (en) * | 2011-12-26 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Fastening device for casing of linear encoder |
| CN102788609A (en) * | 2012-06-14 | 2012-11-21 | 深圳市艾而特工业自动化设备有限公司 | Encoder cushioning structure |
| CN203385435U (en) * | 2013-08-23 | 2014-01-08 | 叶建丰 | Rotary encoder |
| CN204442095U (en) * | 2015-01-06 | 2015-07-01 | 西门子公司 | The encoder of motor and motor |
| CN105241436A (en) * | 2015-11-03 | 2016-01-13 | 常州华达科捷光电仪器有限公司 | Module structure and laser collimator with the structure |
| CN206192379U (en) * | 2016-11-23 | 2017-05-24 | 广州市精谷智能科技有限公司 | Straight -line code ware shell keeps structure of straightness accuracy under expend with heat and contract with cold condition |
-
2016
- 2016-11-23 CN CN201611035538.1A patent/CN106482769B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06288717A (en) * | 1993-02-11 | 1994-10-18 | Dr Johannes Heidenhain Gmbh | Division carrier |
| JPH08201020A (en) * | 1995-01-23 | 1996-08-09 | Nikon Corp | Moving value reader for measuring apparatus |
| US20030056387A1 (en) * | 2001-09-27 | 2003-03-27 | Mitutoyo Corporation | Unit-type linear displacement measuring apparatus, end fixture therefor, and fixing method using the same |
| CN1810445A (en) * | 2006-02-13 | 2006-08-02 | 广州市诺信数字测控设备有限公司 | Lengthened grating rule installing mechanism |
| CN201440170U (en) * | 2009-06-22 | 2010-04-21 | 广州市番禺奥迪威电子有限公司 | Housing of ultrasonic wave sensor with effectively-improved angle |
| CN102538676A (en) * | 2011-12-26 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Fastening device for casing of linear encoder |
| CN102788609A (en) * | 2012-06-14 | 2012-11-21 | 深圳市艾而特工业自动化设备有限公司 | Encoder cushioning structure |
| CN203385435U (en) * | 2013-08-23 | 2014-01-08 | 叶建丰 | Rotary encoder |
| CN204442095U (en) * | 2015-01-06 | 2015-07-01 | 西门子公司 | The encoder of motor and motor |
| CN105241436A (en) * | 2015-11-03 | 2016-01-13 | 常州华达科捷光电仪器有限公司 | Module structure and laser collimator with the structure |
| CN206192379U (en) * | 2016-11-23 | 2017-05-24 | 广州市精谷智能科技有限公司 | Straight -line code ware shell keeps structure of straightness accuracy under expend with heat and contract with cold condition |
Non-Patent Citations (1)
| Title |
|---|
| 王鹰: "浅论热胀冷缩材料的结构设计", 《装备制造》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194777A (en) * | 2017-12-28 | 2018-06-22 | 长春禹衡光学有限公司 | A kind of erecting device of grating scale |
| CN110186377A (en) * | 2019-07-03 | 2019-08-30 | 长春禹衡光学有限公司 | A kind of grating scale and its ruler shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106482769B (en) | 2018-12-28 |
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Address after: No. 6 Shilou Road Section, Shilian Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province, 511447 (Part of the first floor area of Building 1) Patentee after: Guangzhou Jinggu Intelligent Equipment Co.,Ltd. Address before: 511447 3rd floor, No.80 Zhujiang Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU ACCUGLEN INTELLIGENT TECH LTD. |
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