CN203534534U - Novel bicylinder guide rail grid stroke displacement sensor - Google Patents
Novel bicylinder guide rail grid stroke displacement sensor Download PDFInfo
- Publication number
- CN203534534U CN203534534U CN201320671004.3U CN201320671004U CN203534534U CN 203534534 U CN203534534 U CN 203534534U CN 201320671004 U CN201320671004 U CN 201320671004U CN 203534534 U CN203534534 U CN 203534534U
- Authority
- CN
- China
- Prior art keywords
- slide block
- guide rail
- steel band
- displacement sensor
- guide rails
- 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.)
- Expired - Fee Related
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000004809 Teflon Substances 0.000 claims description 14
- 229920006362 Teflon® Polymers 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- -1 polytetrafluoroethylene Polymers 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 238000007789 sealing Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- Optical Transform (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Disclosed is a novel bicylinder guide rail grid stroke displacement sensor. The sensor relates to a measuring instrument. The sensor comprises two cylinder guide rails, a metal scale raster, a reading head, a slide block, a transmission steel band, an installation block, a lower cover, an upper cover and a housing. Five polytetrafluoroethylene blocks are embedded in the slide block and connected with the two cylinder guide rails. A groove is disposed on the slide block and provided with the reading head. The metal scale raster is disposed between the two cylinder guide rails. One end of the transmission steel band is fixed with the other end of the slide block and connected with a working bench through the installation block. The metal scale raster, the guide rails, the slide block and the reading head are sealed in a lower layer through the lower cover. The steel band is correspondingly disposed in an upper layer and sealed through the upper cover. Linear motion is carried out between the two cylinder guide rails and the slide block. Friction coefficient of the polytetrafluoroethylene is small, and flexible motion is achieved. The metal reflection type raster is longer in service lifetime and small in deformation. A two-layer building protection structure enables longer service lifetime. The housing is made of steel materials, coefficient of linear expansion of inner and outer materials are the same to improve temperature characteristics. The sensor is used in bad machining environments such as a precision grinding machine and achieves measuring precision of +/- 1 micron/m.
Description
Technical field
The accurate displacement that the utility model relates in a kind of machining process is measured and control device, belongs to Technology of Precision Measurement field.
Background technology
The scale grating of at present domestic optical grid line displacement sensor adopts glass transmission-type mostly, and protection adopts sealing joint strip.But glass raster is frangible, the life-span is short, and the hot coefficient of dilatation difference of glass and steel is very large, and temperature characterisitic directly affects the precision of grating scale.Simple gasket structure protection effect for the more severe lathe of working environment is bad, affects grating scale life-span and precision.High, the good temp characteristic of development precision, the novel grating chi that degree of protection is high have become a kind of trend.
Utility model content
The utility model will provide a kind of novel bicylindrical guide rail optical grid line displacement sensor, overcomes original transmission-type glass raster life-span short, and sensitivity is low, and each parts linear expansion coefficient is inconsistent, the problem that degree of protection is low.
For solving the problems of the technologies described above, the utility model provides a kind of novel bicylindrical guide rail optical grid line displacement sensor, comprising: cylindrical guide, metal scale grating, read head, slide block, steel belt, mounting blocks, lower cover, upper cover, shell;
Two cylindrical guides comprise main guide rail, teach rail, cylindrical guide one end is fixed, the tightening nut of other end secured adjusted degree of tightness, on slide block, stud with teflon piece by clamping piece connecting cylinder guide rail, on slide block, slot, the in-built read head of groove, metal scale grating is placed between two cylindrical guides, steel belt one end is fixed on slide block, and the other end is by mounting blocks connecting working table;
Metal scale grating, guide rail, slide block, read head are enclosed in lower floor by lower cover, and steel band and hitch structure are placed in upper strata, by upper cover, are sealed.
On described slide block, stud with five the teflon pieces that slide on bicylindrical guide rail, teflon piece and cylindrical guide are adjacent to by the elastic force of clamping piece.
The tensioning on the roller of both sides of described transmission steel band connects, and bearing seat is fixed on shell by screw, and bearing coordinates with roller.
The utility model is opened 5 grooves on slide block, has teflon piece in groove, and teflon piece is by clamping piece and two cylindrical guide contact slides, and friction factor is little, highly sensitive.Adopt two cylindrical guides, one is main, and one auxiliary, and cylindrical guide one end is fixed, and the other end, by baffle plate and nut tensioning, guarantees high linearity and the precision of guide rail, thereby guarantees the precision of grating scale.Steel band one end of Traction Drive is fixed on slide block, and the other end is connected on worktable, and grating scale and lathe, worktable are realized and being flexibly connected.Protection adopts two floor formula structures, and grating scale, guide rail, slide block, the first-class critical component of reading are enclosed in lower floor by upper cover, and steel band hitch structure is placed in upper strata, and degree of protection is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is slide block structure schematic diagram.
Embodiment
1,2 specifically introduce principle of work of the present utility model by reference to the accompanying drawings.
The application's novel bicylindrical guide rail optical grid line displacement sensor, comprising: tightening nut 1, cylindrical guide 2, metal scale grating 3, read head 4, slide block 5, transmits steel band 6, mounting blocks 7, lower cover 8, upper cover 9, shell 10, roller 11, bearing 12, bearing seat 13, plate washer 14.Adopt bicylindrical guide rail and slide block structure to realize rectilinear motion, two one of cylindrical guides are taken rail as the leading factor, and one is auxiliary.Cylindrical guide one end is tightening nut 1 adjusting elasticity for one end fixedly, guarantees that cylindrical guide is indeformable.On slide block 5, stud with 5 teflon pieces, teflon piece and cylindrical guide are adjacent to by the elastic force of clamping piece.Teflon piece can slide on bicylindrical guide rail, and teflon friction factor is very little, increases the dirigibility of motion.Fluting on slide block 5, the in-built read head 4 of groove, metal scale grating 3 is placed between two cylindrical guides.Steel belt 6 one end are fixed on slide block, and the other end connects worktable, and during working table movement, slide block 5 moves under the drive that transmits steel band 6, thereby realize the relative motion of read head 4 and metal grating chi 3, produce Moire fringe.Protection adopts two floor structures, and grating scale, guide rail, slide block, the first-class critical component of reading are enclosed in lower floor by lower cover, and steel band hitch structure is placed in upper strata, two-layer being spaced, and metal scale grating 3 has had good protection with read head 4.Shell 10 of the present invention adopts Steel material, and inside and outside material linear expansion coefficient is basically identical, the temperature characterisitic of improvement grating sensor.Metal scale grating 3 is fixed on shell 10 bottoms by screw, and is placed between two cylindrical guides.On slide block 5, have groove, read head 4 is by screw fixedly on slide block 5.Steel band 6 is transmitted by screw attachment in slide block 5 both sides, and transmitting steel band 6 can transmission after tensioning on both sides roller 11.Transmit the other end connection piece 7 of steel band 6.Bearing seat 13 is fixed on shell 10 by screw, and bearing 12 is contained in bearing seat 13, and bearing 12 coordinates with roller 11, transmits steel band 6 on roller 11 and tensioning.During lathe work, steel band 6 band movable slider 5 motions, realize the relative motion of read head 4 and metal scale grating 3.Transmit steel band 6 and move between lower cover 8 and upper cover 9, lower cover 8 both sides add dust-proof cushion, prevent that dust from entering.On upper cover 9, have groove, in groove, pack sealing strip into, play better sealing function.
In figure, 1 is tightening nut, and 2 is cylindrical guide, and cylindrical guide one end is screwed, and the other end regulates tensioning with tightening nut 1 and baffle plate 14, guarantees the rectilinearity of cylindrical guide.4 is read head, by screw, is fixed on slide block 5, studs with 5 teflon pieces on slide block 5, and wherein 3 are adjacent to by clamping piece with main guide rail, and slide on main guide rail, and other two contact and slide with auxiliary cylindrical guide.10 is Steel material shell, and 3 is metal scale grating.Mounting blocks 7 connects with platen, and steel band 6 one end are fixed on mounting blocks, and one end connects with slide block 5, and worktable drives steel band motion, and slide block is motion thereupon also, thereby realizes the relative motion of read head and metal scale grating, produces Moire fringe.Regulate after the height between metal scale grating and read head, as long as the two has relative displacement will produce signal.Worktable drives mounting blocks, and mounting blocks connects steel band, steel band traction slide block moving linearly on cylindrical guide, and whole like this device and lathe are realized and being flexibly connected.The shell of novel grating chi and scale grating all adopt Steel material, consistent with the linear expansion coefficient of tested part, thus improvement temperature characterisitic.Teflon piece friction factor is minimum, has improved the sensitivity of grating scale, thereby improves measuring accuracy.Grating scale is very easily bullied, the impact of oil and liquid coolant, very high to sealing requirements.Protection adopts two floor structures, and 8 is lower cover, and metal scale grating, slide block, the first-class critical component of reading are enclosed in to lower floor, and upper strata is steel band Traction Drive, separates like this sealing and dustproof better effects if two-layer.
Claims (3)
1. a novel bicylindrical guide rail optical grid line displacement sensor, is characterized in that: comprising: cylindrical guide, metal scale grating, read head, slide block, steel belt, mounting blocks, lower cover, upper cover, shell;
Two cylindrical guides comprise main guide rail, teach rail, cylindrical guide one end is fixed, the other end has the tightening nut of adjusting elasticity, on slide block, stud with teflon piece by clamping piece connecting cylinder guide rail, on slide block, slot, the in-built read head of groove, metal scale grating is placed between two cylindrical guides, steel belt one end is fixed on slide block, and the other end is by mounting blocks connecting working table; Metal scale grating, guide rail, slide block, read head are enclosed in lower floor by lower cover, and steel band and hitch structure are placed in upper strata, by upper cover, are sealed.
2. optical grid line displacement sensor according to claim 1, is characterized in that: on described slide block, stud with five the teflon pieces that slide on bicylindrical guide rail, teflon piece and cylindrical guide are adjacent to by the elastic force of clamping piece.
3. optical grid line displacement sensor according to claim 1, is characterized in that: the tensioning on the roller of both sides of described steel band connects, and bearing seat is fixed on shell by screw, and bearing coordinates with roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671004.3U CN203534534U (en) | 2013-10-29 | 2013-10-29 | Novel bicylinder guide rail grid stroke displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671004.3U CN203534534U (en) | 2013-10-29 | 2013-10-29 | Novel bicylinder guide rail grid stroke displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534534U true CN203534534U (en) | 2014-04-09 |
Family
ID=50420729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320671004.3U Expired - Fee Related CN203534534U (en) | 2013-10-29 | 2013-10-29 | Novel bicylinder guide rail grid stroke displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534534U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091941A (en) * | 2017-06-27 | 2017-08-25 | 常州瑞丰特科技有限公司 | High-precision acceleration transducer based on reflective gratings chi |
| CN108592802A (en) * | 2018-05-11 | 2018-09-28 | 北京华铁瑞通技术有限公司 | There is tiny fragments of stone, coal, etc. railway track to monitor system reflector mounting assembly |
-
2013
- 2013-10-29 CN CN201320671004.3U patent/CN203534534U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091941A (en) * | 2017-06-27 | 2017-08-25 | 常州瑞丰特科技有限公司 | High-precision acceleration transducer based on reflective gratings chi |
| CN107091941B (en) * | 2017-06-27 | 2023-10-27 | 常州瑞丰特科技有限公司 | High-precision acceleration sensor based on reflection type grating ruler |
| CN108592802A (en) * | 2018-05-11 | 2018-09-28 | 北京华铁瑞通技术有限公司 | There is tiny fragments of stone, coal, etc. railway track to monitor system reflector mounting assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |