CN201392178Y - Improved grating reading head - Google Patents
Improved grating reading head Download PDFInfo
- Publication number
- CN201392178Y CN201392178Y CN200920052816U CN200920052816U CN201392178Y CN 201392178 Y CN201392178 Y CN 201392178Y CN 200920052816 U CN200920052816 U CN 200920052816U CN 200920052816 U CN200920052816 U CN 200920052816U CN 201392178 Y CN201392178 Y CN 201392178Y
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- CN
- China
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- grating
- bogie
- raster
- spring
- base
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- Expired - Lifetime
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Abstract
The utility model discloses an improved grating reading head which comprises a base and a grating trolley. The grating trolley is arranged in a groove of the base, a spring strip and a spring are arranged between the base and the grating trolley, one end of the spring strip is fixedly connected with the base, the other end of the spring strip is pressed towards one side of the grating trolley, one end of the spring is pressed against the base, and the other end of the spring is pressed against the bottom part of the grating trolley. The improved grating reading head has the characteristics that: the structure of the improved grating reading head is optimized; the spring strip is used to generate a forward thrust force against the grating trolley, and the spring is used to generate an upward thrust force against the grating trolley, so as to position the grating trolley; five bearings and a receiving plate of the grating trolley clamp a grating ruler to position the grating ruler, and the bearings do not need the spring strip; moreover, the structure of the improved grating reading head is simple as well as reasonable, the manufacturing and producing are convenient, and the production cost is reduced.
Description
Technical field
The utility model relates to the optical grating detection technology field, is specifically related to a kind of grating reading head of improvement.
Background technology
Grating is the optical detection device that utilizes optical transmission, diffraction phenomena to make, as long as it be made up of scale grating and grating reading head two parts.Usually, one of them is fixed on the movable part of lathe (as worktable or screw mandrel), and another one is installed on the fixed part of lathe (as lathe base), and the two relatively moves along with moving of worktable.In grating reading head, an indication grating is installed, when the scale grating moved with respect to grating reading head, the scale grating just moved with respect to indication grating.When grating is installed, the depth of parallelism of strict guarantee scale grating and indication grating and gap between the two (generally getting 0.05mm or 0.1mm) requirement.
The scale grating is transparent glass sheet or the strip metallic mirror surface with even intensive strain line in the method photoetching of vacuum coating.
The effect that grating plays is that the coordinate to cutter and workpiece plays a detection, and whether feed has error to be commonly used to observe it in numerically-controlled machine, with the compensation of error effect of the motion of playing a compensation cutter.See just as eye whether the cutter cut workpiece has deviation in fact, can play the standard that whether will adjust to hand then.
Existing grating reading head is made up of base and raster bogie, drives raster bogie by base and slides along the grating chi, raster bogie clips the grating chi by six bearings, and each bearing all is furnished with spring leaf, such structure more complicated, making production efficiency is low, the production cost height.
The utility model content
The utility model is in order to overcome the deficiency that above prior art exists, and a kind of simple and reasonable, grating reading head of making improvement convenient for production is provided.
The purpose of this utility model realizes by following technical scheme: the grating reading head of this improvement, comprise base and raster bogie, and it is characterized in that: described raster bogie is positioned at the groove of base, is provided with spring and spring between base and the raster bogie; One end of spring is fixedlyed connected with base, and the other end is pressed to raster bogie one side; One end and the base of spring are inconsistent, and the other end and raster bogie bottom are inconsistent.
The lower end of described raster bogie is connected with luminous plaque by screw, and the upper end is connected with dash receiver by screw, and the middle part of raster bogie is provided with indication grating.
Described raster bogie is provided with five bearings, and wherein two central shaft is parallel vertical direction, and other three central shaft is parallel horizontal direction; Bearing is by the screw location of central shaft position.
The utility model has following advantage with respect to prior art: the grating reading head of this improvement, structurally be optimized, use spring to raster bogie generation thrust forward, use spring that raster bogie is produced thrust upwards, make the raster bogie location; Five bearings and the receiver sheet of raster bogie clip the grating chi, make grating chi location, and bearing of the present utility model need not to dispose spring leaf.The grating reading head of this improvement simple and reasonable made convenient for productionly, reduces production costs.
Description of drawings
Fig. 1 is the structural representation of the grating reading head of improvement of the present utility model.(grating belt chi)
Fig. 2 is the rear view of grating reading head of the improvement of Fig. 1.(not grating belt chi)
Fig. 3 is the stereographic map of grating reading head of the improvement of Fig. 2.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The grating reading head of improvement as shown in Figure 1 comprises base 1 and raster bogie 2, and raster bogie 2 clips grating chi 3.
As shown in Figures 2 and 3, raster bogie 2 is positioned at the groove of base 1, is provided with spring 5 between base 1 and the raster bogie 2, and an end of spring 5 is fixedlyed connected with base 1, and the other end is pressed to raster bogie 2 one sides.In order further to improve the locating effect of raster bogie, also be provided with spring 6 between base 1 and the raster bogie 2, an end and the base 1 of spring 6 are inconsistent, and the other end and raster bogie 2 bottoms are inconsistent.
The lower end of raster bogie 2 is connected with luminous plaque 7 by screw, and the upper end is connected with dash receiver 8 by screw, and the middle part of raster bogie 2 is provided with indication grating 9.
Raster bogie 2 is provided with five bearings 10, and wherein two central shaft is parallel vertical direction, and other three central shaft is parallel horizontal direction; Bearing 10 is by screw 11 location of central shaft position.
The grating reading head of this improvement, the thrust of using 5 pairs of raster bogie of spring 2 to produce forward uses 6 pairs of raster bogie of spring 2 to produce thrust upwards, makes raster bogie 2 location; Five bearings 10 and the receiver sheet 8 of raster bogie 2 clip the grating chi, make grating chi location, and bearing of the present utility model 10 need not to dispose spring leaf.
Above-mentioned embodiment is a preferred embodiment of the present utility model; can not limit claim of the present utility model; other any change that does not deviate from the technical solution of the utility model and made or other equivalent substitute mode are included within the protection domain of the present utility model.
Claims (3)
1, Gai Liang grating reading head comprises base and raster bogie, it is characterized in that: described raster bogie is positioned at the groove of base, is provided with spring and spring between base and the raster bogie; One end of spring is fixedlyed connected with base, and the other end is pressed to raster bogie one side; One end and the base of spring are inconsistent, and the other end and raster bogie bottom are inconsistent.
2, the grating reading head of improvement according to claim 1 is characterized in that: the lower end of described raster bogie is connected with luminous plaque by screw, and the upper end is connected with dash receiver by screw, and the middle part of raster bogie is provided with indication grating.
3, the grating reading head of improvement according to claim 1 is characterized in that: described raster bogie is provided with five bearings, and wherein two central shaft is parallel vertical direction, and other three central shaft is parallel horizontal direction; Bearing is by the screw location of central shaft position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920052816U CN201392178Y (en) | 2009-03-18 | 2009-03-18 | Improved grating reading head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920052816U CN201392178Y (en) | 2009-03-18 | 2009-03-18 | Improved grating reading head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201392178Y true CN201392178Y (en) | 2010-01-27 |
Family
ID=41599000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920052816U Expired - Lifetime CN201392178Y (en) | 2009-03-18 | 2009-03-18 | Improved grating reading head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201392178Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508083B (en) * | 2009-03-18 | 2011-08-03 | 广州市诺信数字测控设备有限公司 | Improved raster reading head |
| CN104154858A (en) * | 2014-07-14 | 2014-11-19 | 中国科学院长春光学精密机械与物理研究所 | Simple method for preventing five bearings of sliding rack from moving relative to main grating |
-
2009
- 2009-03-18 CN CN200920052816U patent/CN201392178Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508083B (en) * | 2009-03-18 | 2011-08-03 | 广州市诺信数字测控设备有限公司 | Improved raster reading head |
| CN104154858A (en) * | 2014-07-14 | 2014-11-19 | 中国科学院长春光学精密机械与物理研究所 | Simple method for preventing five bearings of sliding rack from moving relative to main grating |
| CN104154858B (en) * | 2014-07-14 | 2017-01-25 | 中国科学院长春光学精密机械与物理研究所 | Simple method for preventing five bearings of sliding rack from moving relative to main grating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |
|
| CX01 | Expiry of patent term |