CN102538676B - Fastening device for casing of linear encoder - Google Patents
Fastening device for casing of linear encoder Download PDFInfo
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- CN102538676B CN102538676B CN201110442288.4A CN201110442288A CN102538676B CN 102538676 B CN102538676 B CN 102538676B CN 201110442288 A CN201110442288 A CN 201110442288A CN 102538676 B CN102538676 B CN 102538676B
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- chi shell
- support
- flexible
- casing
- shell support
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Abstract
A fastening device for a casing of a linear encoder belongs to the technical field of optics and is used for firmly fastening the casing to a part to be detected, and for effectively controlling deformation of the linear encoder upon temperature effect to be within a small range so that the linear coder has certain repeatable temperature property. The fastening for the casing of the linear encoder comprises a rigid casing support and a plurality of flexible casing supports, wherein the rigid casing support is fixed in the middle of the casing, and the flexible casing supports are fixed at equal intervals on the casing and disposed on two sides of the rigid casing support in bilateral symmetry. The rigid casing support is provided with a pin hole in the middle, each flexible casing support is provided with a through hole in the middle, and each flexible casing support is provided with grooves which are reserved on two sides of the through hole in bilateral symmetry. By the aid of the designed structure of the rigid casing support and the flexible casing supports, the deformation of the linear encoder upon temperature effect is controlled well, and the certain repeatable temperature property of the linear encoder is realized.
Description
Technical field
The invention belongs to optical technical field, particularly a kind of chi shell stationary installation of grating scale.
Background technology
At delicate metering and displacement control field, adopt grating as benchmark, be acknowledged as in the world and obtain the most practical, most economical, the most reliable technical measures of high precision.Optical grating ruler measurement mechanism is the mainstream product of realizing this approach, is widely used in various lathes, electromechanical equipment, automatic measurement equipment.
When grating scale is arranged on two members that mutually move as a kind of measuring mechanism, chi shell is connected with a member to be measured, and the related scanning mechanism of sliding rack body is connected with another member to be measured.Grating scale can be subject to the impact of the factors such as ball screw assembly, in measuring process, and certain variation can occur temperature, thereby produces the phenomenon of expanding with heat and contract with cold, and can have influence on the precision of grating scale.
Summary of the invention
The object of this invention is to provide a kind of chi shell stationary installation of grating scale, this device is securely fixed in chi shell on member to be measured, and the Deformation control effectively grating scale temperature influence being produced, in less scope, makes grating scale have definite repeatably temperature characterisitic.
The present invention is a kind of chi shell stationary installation of grating scale, this device is made up of rigidity chi shell support and multiple flexible chi shell support, rigidity chi shell support is fixed on the centre position of chi shell, and multiple flexible chi shell supports are equidistantly fixed on chi shell, is placed in the both sides of rigidity chi shell support and symmetrical; Pin hole is set in the middle of described rigidity chi shell support, in the middle of described flexible chi shell support, through hole is set, this flexibility chi shell support also has groove and is positioned at through hole both sides and is symmetrical set;
On described chi shell, longitudinal gathering sill is set, nut is placed in gathering sill;
Described rigidity chi shell support both sides arrange respectively the first counterbore and the second counterbore, coordinated rigidity chi shell support and chi shell are fixed together by socket head cap screw and nut, between socket head cap screw and rigidity chi shell support, elastomeric pad are set;
Described flexible chi shell support both sides arrange respectively the 3rd counterbore and the 4th counterbore, coordinated flexible chi shell support and chi shell are fixed together by socket head cap screw and nut, between socket head cap screw and flexible chi shell support, elastomeric pad are set;
Described flexible chi shell support is near arranging and the corresponding flexible support locating surface of chi shell left surface in the direction of member to be measured;
In the direction of described rigidity chi shell support near member to be measured, there is one and the corresponding rigid support locating surface of chi shell left surface.
The chi shell stationary installation of a kind of grating scale of the present invention adopts the structure of separate type, control preferably by the project organization of rigidity chi shell support and multiple flexible chi shell supports the distortion that grating scale temperature influence produces, realize the repeatably temperature characterisitic of determining of grating scale, thereby effectively ensured the measuring accuracy of grating scale; This apparatus structure is simple, is convenient to processing, operation easy to implement.
Brief description of the drawings
Fig. 1 is the front view of chi shell and stationary installation thereof.
Fig. 2 is the A-A cross sectional view of chi shell and stationary installation thereof.
Fig. 3 is the front view of flexible chi shell support.
Fig. 4 is the vertical view of flexible chi shell support.
Fig. 5 is the front view of rigidity chi shell support.
Fig. 6 is the vertical view of rigidity chi shell support.
In figure, 1, rigidity chi shell support, 2, flexible chi shell support, 3, pin, 4, bolt, 5, chi shell, 6, elastomeric pad, 7, socket head cap screw, 8, nut, 9, flexible support locating surface, 10, through hole, 11, a counterbore, 12, the second counterbore, 13, rigid support locating surface, 14, pin hole, 15, the 3rd counterbore, 16, the 4th counterbore, 17, gathering sill, 18, left surface, 19, groove.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
As shown in Figure 1, be fixed with rigidity chi shell support 1 in the centre position of chi shell 5, it is rigidly connected by pin 3 and member to be measured; Have respectively a flexible chi shell support 2 in the both sides of rigidity chi shell support 1, they are connected with Component Flexible to be measured by bolt 4.When chi shell 5 occurs relative when flexible because of temperature variation and member to be measured, due to the effect of rigidity chi shell support 1, the center of chi shell 5 can not be moved, when temperature raises, whole Chi Keyi center is divergence point both direction expansion to the left and right, when temperature reduces, the Jiang Yi center, both sides of chi shell is that Rendezvous Point inwardly shrinks, and chi shell 5 has definite repeatably temperature characterisitic.
If all adopt and be rigidly connected, grating scale can not produce dilatation near pilot hole, and the other parts of grating scale will expand contraction in the time of temperature variation, will cause so the temperature variant nonaffine deformation of grating scale, the temperature characterisitic of whole grating scale is uncertain; If all adopt and flexibly connect, in the time of temperature variation, the dilatation of grating scale has uncertain directivity, nor can ensure the repeatably temperature characterisitic of every part.
The chi shell support of two types and chi shell 5 to be fixedly connected with mode identical, taking flexible chi shell support as example, as shown in Figure 2, flexible chi shell support 2 is fixed on chi shell 5 by socket head cap screw 7, elastomeric pad 6, nut 8.On chi shell 5, have gathering sill 17, nut 8 can be put into wherein, and due to nut 8 and gathering sill 17, the size on Width matches, in the time of turn socket head cap screw 7, nut 8 can't rotate, and like this, socket head cap screw 7 will closely be connected by screw thread with nut 8.Elastomeric pad 6 will be reinforced this connection, and flexible chi shell support 2 is fixed on chi shell 5 long-term effectively.In direction at flexible chi shell support 2 near member to be measured, there is flexible support locating surface 9, it is corresponding with the left surface 18 of chi shell 5, in the time that flexible chi shell support 2 is fixed on member to be measured, the left surface 18 of flexible support locating surface 9 and chi shell 5 will with member close contact to be measured.
As shown in Figure 3, flexible chi shell support 2 has a through hole 10, flexibly connects in order to inserting bolt 4, and multiple grooves 19 of its both sides are convenient to its mobility in the time of temperature variation.As shown in Figure 4, the both sides of flexible chi shell support 2 have i.e. the first counterbore 11 and the second counterbore 12 of symmetrical counterbore, for inserting socket head cap screw 7, flexible chi shell support 2 are fixed on to chi shell 5.
The structural representation of rigidity chi shell support 1 as shown in Figure 5, different with flexible chi shell support 2, the pin hole 14 that in the middle of it, setting and pin 3 match, insert after pin 3, rigidity chi shell support 1 will firmly be connected with member to be measured, and not recessing, will can not be moved when temperature variation on rigidity chi shell support 1.As shown in Figure 6, the both sides of rigidity chi shell support 1 have i.e. the 3rd counterbore 15 and the 4th counterbore 16 of symmetrical counterbore, for inserting socket head cap screw 7, rigidity chi shell support 1 are fixed on to chi shell 5.
Claims (4)
1. the chi shell stationary installation of a grating scale, this device is made up of rigidity chi shell support (1) and multiple flexible chi shell supports (2), it is characterized in that, described rigidity chi shell support (1) is fixed on the centre position of chi shell (5), it is upper that described multiple flexible chi shell supports (2) are equidistantly fixed on chi shell (5), is placed in rigidity chi shell support (1) both sides and symmetrical; Pin hole (14) is set in the middle of described rigidity chi shell support (1), in the middle of described flexible chi shell support (2), through hole (10) is set, this flexibility chi shell support (2) also has groove (19) and is positioned at through hole (10) both sides and is symmetrical set; Described rigidity chi shell support (1) is near having in the direction of member to be measured and the corresponding rigid support locating surface (13) of chi shell (5) left surface (18); Described flexible chi shell support (2) is near arranging in the direction of member to be measured and the corresponding flexible support locating surface (9) of chi shell (5) left surface (18).
2. the chi shell stationary installation of a kind of grating scale according to claim 1, is characterized in that, longitudinal gathering sill (17) is set on described chi shell (5), and nut (8) is placed in gathering sill (17).
3. the chi shell stationary installation of a kind of grating scale according to claim 2, it is characterized in that, one side of described rigidity chi shell support (1) arranges the first counterbore (15), opposite side arranges the second counterbore (16), coordinate rigidity chi shell support (1) and chi shell (5) are fixed together by socket head cap screw (7) and nut (8), between socket head cap screw (7) and rigidity chi shell support (1), elastomeric pad (6) is set.
4. the chi shell stationary installation of a kind of grating scale according to claim 2, it is characterized in that, one side of described flexible chi shell support (2) arranges the 3rd counterbore (11), opposite side arranges the 4th counterbore (12), match flexible chi shell support (2) and chi shell (5) are fixed together by socket head cap screw (7) and nut (8), between socket head cap screw (7) and flexible chi shell support (2), elastomeric pad (6) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442288.4A CN102538676B (en) | 2011-12-26 | 2011-12-26 | Fastening device for casing of linear encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442288.4A CN102538676B (en) | 2011-12-26 | 2011-12-26 | Fastening device for casing of linear encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102538676A CN102538676A (en) | 2012-07-04 |
| CN102538676B true CN102538676B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110442288.4A Expired - Fee Related CN102538676B (en) | 2011-12-26 | 2011-12-26 | Fastening device for casing of linear encoder |
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| Country | Link |
|---|---|
| CN (1) | CN102538676B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604370B (en) * | 2013-11-26 | 2016-07-06 | 中国科学院长春光学精密机械与物理研究所 | The auxiliary device fixing with chi shell by main for grating scale grating scale |
| CN103737435B (en) * | 2013-12-04 | 2016-01-06 | 安徽理工大学 | A kind of method improving CNC Machine Grating measuring system certainty of measurement |
| CN104476929B (en) * | 2014-12-25 | 2017-06-23 | 北京美科艺数码科技发展有限公司 | A kind of grating mounting bracket and its installation method |
| CN105119097B (en) * | 2015-09-21 | 2018-02-06 | 上海卫星工程研究所 | Space flight power bus fixing device |
| CN105449495A (en) * | 2015-11-03 | 2016-03-30 | 北京热刺激光技术有限责任公司 | Radio frequency laser with negative electrode plate installed on parallel supports |
| CN106482769B (en) * | 2016-11-23 | 2018-12-28 | 广州市精谷智能科技有限公司 | A kind of linear encoder shell keeps the structure of straightness under the conditions of expanding with heat and contract with cold |
| 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 |
| CN109579710A (en) * | 2018-12-26 | 2019-04-05 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of flexible grating installing mechanism with thermal stability |
| 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 |
| CN110657150A (en) * | 2019-09-29 | 2020-01-07 | 长春禹衡光学有限公司 | Grating ruler and nut fixing device thereof |
| CN112123008B (en) * | 2020-09-23 | 2022-03-29 | 江苏洛柳精密科技有限公司 | Protection installation of grating ruler |
| CN114473637A (en) * | 2022-03-21 | 2022-05-13 | 苏州天沐兴智能科技有限公司 | Grating ruler self-adaptive adjusting mechanism free of deformation of base material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002365013A (en) * | 2001-06-04 | 2002-12-18 | Fuji Photo Optical Co Ltd | Support device of reference plate for light wave interferometer |
| CN2867283Y (en) * | 2006-02-13 | 2007-02-07 | 广州市诺信数字测控设备有限公司 | Butt-joining mechanism for lengthening grating rule |
| CN101988819B (en) * | 2009-07-30 | 2013-07-03 | 廊坊开发区莱格光电仪器有限公司 | Sealed laser grating remote safe linear displacement sensor |
| CN101770166B (en) * | 2010-01-06 | 2011-12-28 | 天津大学 | Two-translational-motion precision positioning working table for nano-imprint photoetching system |
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- 2011-12-26 CN CN201110442288.4A patent/CN102538676B/en not_active Expired - Fee Related
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| CN102538676A (en) | 2012-07-04 |
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