CN107525470A - A kind of grating displacement sensor - Google Patents
A kind of grating displacement sensor Download PDFInfo
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- CN107525470A CN107525470A CN201710964894.XA CN201710964894A CN107525470A CN 107525470 A CN107525470 A CN 107525470A CN 201710964894 A CN201710964894 A CN 201710964894A CN 107525470 A CN107525470 A CN 107525470A
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- 230000005622 photoelectricity Effects 0.000 claims 2
- 238000005259 measurement Methods 0.000 description 14
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Classifications
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- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention discloses a kind of grating displacement sensor, body silently is set including both ends, type groove processed on body, the scale grating that 45 ° of opposing body is obliquely installed is set in type groove, the side of scale grating thickness direction sets emitting module, opposite side sets pulley assembly and emitting module, and 45 ° of pulley assembly opposing body is obliquely installed and is slidably connected with scale grating, and emitting module and receiving unit are connected by connecting pole with pulley assembly;Emitting module and receiving unit are also set to emitting module with scale grating and coordinate scale grating to form Moire fringe in position, and receiving unit can read Moire fringe and obtain displacement;Also include the grating reading head assembly for being electrically connected and controlling emitting module to be worked with receiving unit, grating reading head assembly is located in type groove and is connected with pulley assembly, and pulley assembly is slided along scale grating and drives emitting module, receiving unit and grating reading head component matching move and receiving unit is read the Moire fringe of matching in real time and is obtained displacement.
Description
Technical field
The present invention relates to technical field of electro-optical measurement, more particularly to a kind of grating displacement sensor.
Background technology
Grating scale, also referred to as grating rule displacement sensor (grating scale sensor）, worked using the optical principle of grating
Measurement feedback device.Grating scale is usually applied in the closed loop servo system of Digit Control Machine Tool, can be used as straight-line displacement or angle
The detection of displacement.
Known grating displacement sensor structure is 90 degree of installation site, and such grating displacement sensor is current on the market
There are 2 class representative products, one is Japanese three rich grating scales, connect reading head and coaster, because spring force resolution is made with bone rod
Section bar body can be abraded in assembling process into reading head, influences production efficiency, can also increase installation in finished product installation process
Difficulty;The second is domestic new day grating scale, reading head and coaster are directly connected to diameter 1.0mm spring, except Japan three is rich
The deficiency of grating scale, also as spring foozle, rigging error, structure birth defect, causes unstable product quality, measurement
Precision is inaccurate, because part tolerance and rigging error cause spring structure job insecurity (stress size and Orientation shakiness
It is fixed）, the loose contact of the bearing and scale grating (key light grid) of dolly is caused, scale grating (key light grid) is directly affects and refers to
Show gap and the Moire fringe of grating, be damaged data precision and repeatability, and dolly to grating scale, scale grating, refer to
Show that the requirement of the installation accuracy of the devices such as grating is high.Grating displacement sensor structure also has 45 degree of installation site, representative products
It is domestic letter and grating scale, reading head and coaster is connected with diameter 1.0mm springs, this mounting structure decomposes power in section bar body
On interior key light grid, scratch section bar body is avoided, improves production efficiency, reduces installation difficulty, deficiency is spring
Stress, manufacture rigging error cause measurement more extensive, are not suitable for high-acruracy survey.
For this, the creator of this exercises combines itself design research and development and using the technical problem encountered in process, design
A kind of grating displacement sensor, the actual conditions for manufacturing and assembling for part, improves the measurement accuracy of grating sensor, carries
High efficiency, reduce production cost.
The content of the invention
The technical problem to be solved in the present invention is for defect present in existing design technology, provides a kind of pattern displacement
Sensor, what the grating displacement sensor can also be stablized in the case of coaster is without spring moves up dynamic, restricted spring in scale grating
Influence it is small, production it is easy for installation.
In order to solve the above technical problems, the technical scheme that the present invention takes is as follows:A kind of grating displacement sensor, including two
End is provided with body silently, and a type groove is formed with the body, is obliquely installed in the type groove provided with relatively described 45 ° of a body
Scale grating, the side of the scale grating thickness direction is provided with receiving unit, and opposite side is sequentially provided with pulley assembly and hair
Component is penetrated, relatively described 45 ° of body is obliquely installed and is slidably connected with the scale grating pulley assembly in position, institute
Stating pulley assembly can slide along the scale grating, and the emitting module and receiving unit pass through connecting pole and the pulley assembly
Connect and it can be followed to be slided along the scale grating;The emitting module and receiving unit and the scale grating are in position
Being also set to the emitting module coordinates the scale grating to form Moire fringe, and the receiving unit can read the More
Striped and obtain displacement;Also include the grating reading head assembly for being electrically connected and controlling emitting module to be worked with receiving unit,
The grating reading head assembly activity is installed in the type groove and is connected with the pulley assembly by elastic parts, the cunning
Car component slides along the scale grating and drives the emitting module, receiving unit and grating reading head component matching move simultaneously
The receiving unit is set to read the Moire fringe of matching in real time and obtain displacement.
It is expanded on further as to above-mentioned technical proposal：
In the above-mentioned technical solutions, the body is aluminium alloy extrusions body.
In the above-mentioned technical solutions, the emitting module includes the first PCB and indication grating, the indication grating
Be arranged in position between the emitting module and the scale grating, in first PCB set light source and
The control circuit of the light source luminescent is controlled, first PCB is also electrically connected simultaneously with the grating reading head assembly
It is controlled by it and makes the light source luminescent, the light source luminescent is irradiated described in the indication grating and the scale grating and cooperation
Indication grating is mobile relative to the scale grating and forms the Moire fringe.
In the above-mentioned technical solutions, the receiving unit includes the second PCB, and in second PCB
Control circuit provided with the photoelectric sensor for reading the Moire fringe and the control photoelectric sensor work, described second
PCB is also electrically connected and is controlled by it with the grating reading head assembly, measures the photoelectric sensor and reads
The Moire fringe and obtain displacement.
In the above-mentioned technical solutions, the grating reading head assembly includes pedestal, and main control PCB circuits are set on the pedestal
Plate, the main control PCB are electrically connected with first PCB and the second PCB;The main control
PCB can control first PCB to work and make the light source luminescent and irradiate the scale grating and instruction
Grating, and/or control the 2nd PCB circuit boards work and the photoelectric sensor is scanned the Moire fringe and is obtained
Displacement.
In the above-mentioned technical solutions, the pulley assembly includes coaster seat and some rolling bearings, some axis of rolling
Hold and be connected with the coaster seat by screw and be in rolling contact with the scale grating, the coaster seat made is along the scale light
Grid transverse shifting;The mounting groove for elastic parts installation is also formed with the coaster seat.
In the above-mentioned technical solutions, the coaster seat is provided with five rolling bearings, five rolling bearing wherein two axis of rolling
Hold and be in rolling contact with the one side in the scale raster width direction, another three rolling bearing and the scale grating thickness direction
One side is in rolling contact.
In the above-mentioned technical solutions, the elastic parts includes bone rod and spring, bone rod one end movable inlaying
In the mounting groove, the other end is movably embedded in the arc groove that system is opened on the pedestal, makes the pulley assembly and institute
State the connection of grating reading head assembly;The end that the bone rod is embedded in the arc groove is additionally provided with embedded hole, the pedestal
Position processed is opened with the arc groove and is provided with a spring resettlement groove and positioning hole, and the spring matching is installed in the spring peace
Put in groove, and two free ends of the spring are respectively embedded into the embedded hole and the positioning hole so that the bone rod and
The pedestal is connected by the spring damping to lock.
In the above-mentioned technical solutions, the connecting pole runs through the pulley assembly, and two connections are set in the pulley assembly
Post, the both ends of two connecting poles are locked by screw and first PCB and the second PCB, the connection
Post is the brass tube of disposed thread.
The beneficial effects of the present invention are:The pattern displacement sensor of the present invention is by the scale grating phase of existing grating scale
Body angle at 45 ° is installed, the pulley assembly made can also be moved smoothly in the case of without spring in the scale grating, drop
It is low to part and the required precision of assembling, improve the measurement accuracy of grating displacement sensor;The pattern displacement of the present invention passes
Sensor has filled up the single and fixed blank of existing grating scale mounting structure form, reduces what the coaster of grating scale was restricted by spring
Influence, production and assembly and easy to use, measurement efficiency and precision height.
Brief description of the drawings
Fig. 1 is the installation diagram of the present invention；
Fig. 2 is Fig. 1 side cross section view；
Fig. 3 is Fig. 1 exploded view；
Fig. 4 is the installation diagram that the present invention removes body；
Scale grating, pulley assembly and the receiving unit installation diagram of Fig. 5 present invention;
Fig. 6 is the optical principle schematic diagram of the grating displacement sensor measurement of the present invention.
In figure, 1. bodies, 101. type grooves, 102. embedding grooves;2. silently;3. scale grating;4. emitting module, 41. first
PCB;42. indication grating, 43. light sources;5. pulley assembly, 51. coaster seats, 52. rolling bearings, 53. screws, 54. peaces
Tankage;6. receiving unit, 61. second PCBs, 62. photoelectric sensors;7. elastic parts, 71. bone rods, 72. springs,
711. embedded hole;8. grating reading head assembly, 81. pedestals, 811. arc grooves, 812. spring resettlement grooves;9. connecting pole.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
The embodiment described by reference to accompanying drawing is exemplary, it is intended to for explaining the application, and it is not intended that right
The limitation of the application.In the description of the present application, 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 ",
The orientation or position relationship of the instructions such as " clockwise ", " counterclockwise " be based on orientation shown in the drawings or position relationship, be only for
It is easy to describe the application and simplify to describe, rather than instruction or implies that signified device or element there must be specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that limitation to the application.In addition, term " first ", " second "
It is only used for describing purpose, and it is not intended that indicating or implying relative importance or imply the technical characteristic indicated by indicating
Quantity.Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more spy
Sign.In the description of the present application, " several ", " multiple " are meant that two or more, unless otherwise clearly specific
Limit.Unless otherwise clearly defined and limited, in this application, the art such as term " installation ", " connected ", " connection ", " fixation "
Language should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can be machinery
Connection, can also be electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, can be two elements
Internal connection.For the ordinary skill in the art, above-mentioned term can be understood in the application as the case may be
In concrete meaning.Unless otherwise clearly defined and limited, in this application, fisrt feature second feature it " on " or it
" under " can directly be contacted including the first and second features, it is not directly to contact but lead to that can also include the first and second features
The other characterisation contact crossed between them.And fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature directly over second feature and oblique upper, or only
Represent that fisrt feature level height is less than second feature.
A kind of specific embodiment of the accompanying drawing 1-6 examples present invention.The present embodiment is to be expected that by designing a kind of grating
Displacement transducer, it is allowed to reduce the required precision to part and assembling during in automatic measurement system, improves grating position
The measurement accuracy of displacement sensor.Refer to the attached drawing 1-6, a kind of grating displacement sensor, it includes body 1, and the 1 preferred aluminium of body closes
Metal type material body, the both ends (two side ends of X-direction) of the body 1 set silently 2, a type groove 101, institute are formed with the body 1
State and the scale grating 3 that relatively described 1 overturning angle at 45 ° of body is set is provided with type groove 10, refer to the attached drawing 2-4, the type groove
It is in the embedding groove 102 that 45° angle is set that 101 bottoms, which are formed with an opposed vertical plane, and the scale grating 3 is embedded in the embedding groove
In 102 and the scale grating 3 is set to stretch out the embedding groove 102 along its width W;The thickness direction D's of scale grating 3
Side is provided with receiving unit 6, and opposite side is sequentially provided with pulley assembly 5 and emitting module 4, and in practice, the pulley assembly 5 is in place
Putting relatively described body 1, also overturning angle at 45 ° sets and is slidably connected with the scale grating 3, and so-called be slidably connected refers to:
The pulley assembly 5 is shelved on the scale grating 1, and the pulley assembly 5 can be slided along the scale grating 3;
Refer to the attached drawing 5, in the present embodiment, the pulley assembly 5 include coaster seat 51 and some rolling bearings 52, some rollings
Bearing 52 is connected with the coaster seat 51 by screw 53 and is in rolling contact with the scale grating 3, the coaster seat 51 made
Can be along the transverse shifting of scale grating 3;Refer to the attached drawing 5, the coaster seat 51 are provided with five rolling bearings 52, five rolling bearings
In 52, the top end face for having two rolling bearings 52 and the width W of the scale grating 3 is in rolling contact, meanwhile, two axis of rolling
Hold (52 (a）、52(b）) it is to be installed in along Y-direction on the coaster seat 51, and two rolling bearing 52 is to be installed in coaster seat
The both ends of 51 length direction, set simultaneously, because the scale grating 3 is overturning angle at 45 °, the width of coaster seat 51
The top end face in direction is provided with two rolling bearings (52 again（a）、52(b）), thus when coaster seat 51 is installed on the scale grating 3
When, due to the Action of Gravity Field of itself of coaster seat 51（Gravity is decomposed into through-thickness D and in the width direction W two component, and two
Component is equal in magnitude, and W component is rolling bearing (52 (a in the width direction）、52(b））It is wide to be in rolling contact the coaster seat 51
Spend the active force of the top end face in direction) under, the coaster seat 51 slides without what spring can also be stablized along the scale grating 3;
And the other three rolling bearing（52(c)、52(d)、52(e)）With upper surface (the two of D directions of the thickness direction D of scale grating 3
One of side) it is in rolling contact, and three rolling bearing（52(c)、52(d)、52(e)）Correspond in coaster seat 51 and the scale light
The plane that the thickness direction D of grid 3 upper surface is parallel is interior into isosceles triangle position distribution (refer to the attached drawing 5);Refer to the attached drawing 2-6,
The emitting module 4 and receiving unit 6 are connected with the pulley assembly 5 by connecting pole 9 and can follow it along the scale light
Grid 3 slide;In embodiment, the connecting pole 9 runs through the pulley assembly 5, and two connecting poles 9 are set in the pulley assembly 5,
The both ends of two connecting poles 9 pass through screw 53 and the first PCB 41 of emitting module 4 and the 2nd PCB of receiving unit 6
Circuit board 61 locks, and the connecting pole 9 is preferably the brass tube of disposed thread;The emitting module 4 and receiving unit 6 and institute
State scale grating 3 and be also set to the emitting module 4 in position and coordinate the scale grating 3 to form Moire fringe (accompanying drawing
Do not show), the receiving unit 6 can read the Moire fringe and obtain displacement;Also include being electrically connected and control transmitting
The grating reading head assembly 8 that component 4 works with receiving unit 6, the activity of grating reading head assembly 8 are installed in the type groove
It is connected on 101 and with the pulley assembly 5 by elastic parts 7, the matching elastic parts 7 is formed with the coaster seat 51 and is pacified
The mounting groove 54 of dress;The pulley assembly 5 is slided along the scale grating 3 and drives the emitting module 4, receiving unit 6 and
The matching of grating reading head assembly 8 is mobile and the receiving unit 6 is read the Moire fringe of matching in real time and is obtained displacement (not
Your striped includes the parameter of matching displacement）.It should be noted that in actual use, the body 1 and the scale grating
3 are installed on the movable part of Auto-Test System, and the pulley assembly 5 and emitting module 4 and receiving unit 6 then lead to
Cross fixed component of the grating reading head assembly 8 indirectly with Auto-Test System to fix, during measurement, movable part is mobile and drives mark
Chi grating 3 moves and the pulley assembly 5 is slided on scale grating 3 and the emitting module 4 is coordinated with receiving unit 6
Complete the measurement of displacement.
In the present embodiment, refer to the attached drawing 2-4 and accompanying drawing 6, the emitting module 4 include the (accompanying drawing of the first PCB 41
The PCB is simply schematically represented, and the component in PCB is not shown) and indication grating 42（With reference to attached
Fig. 6）, the indication grating 42 is arranged between the emitting module 4 and the scale grating 3 in position, and described first
Light source 43 (accompanying drawing is not shown, in practice from photo-electroluminescence diode) and the control light source hair are set in PCB 41
The control circuit of light, first PCB 41 are also electrically connected with the grating reading head assembly 8 and are controlled by it and make
The light source luminescent, in practice, first PCB 41 are the main control PCBs with grating reading head assembly 8
（Accompanying drawing is not shown）Electrical connection, the main control PCB is used to plan as a whole the work for controlling the grating displacement sensor;
Light source 43 described in refer to the attached drawing 6 is luminous to be irradiated the indication grating 42 and the scale grating 3 and coordinates the indication grating 42
Moved relative to the scale grating 3 and form the Moire fringe;The receiving unit 6 includes the (accompanying drawing of the second PCB 61
The PCB is simply schematically represented, and the component in PCB is not shown), and the 2nd PCB circuits
Plate 61 is provided with the photoelectric sensor 62 (refer to the attached drawing 6) for reading the Moire fringe and the control photoelectric sensor 62 works
Control circuit, second PCB 61 is also electrically connected and is controlled by it with the grating reading head assembly 8, makes institute
Photoelectric sensor 62 is stated to measure and read the Moire fringe and obtain displacement, in practice, second PCB 61
It is to be electrically connected with the main control PCB of grating reading head assembly 8 (accompanying drawing is not shown);The grating reading head assembly
8 include setting the main control PCB described in pedestal 81 on pedestal 81 (accompanying drawing not being shown）, the main control PCB
First PCB 41 can be controlled to work and make the light source 43 luminous and irradiate the scale grating 3 and indication grating
42, and/or control the 2nd PCB circuit boards 61 to work and the photoelectric sensor 62 is scanned the Moire fringe and is obtained
Obtain displacement.
Refer to the attached drawing 2-5, the elastic parts 7 include bone rod 71 and spring 72, the one end of bone rod 71 activity edge
In the mounting groove 54, the other end is movably embedded in the arc groove 811 that system is opened on the pedestal 81, passes through the bone
Head rod 11 makes the pulley assembly 5 be connected with the grating reading head assembly 8;In practice, for the both ends of bone rod 11
Locking, for being by the way that the first PCB 41 is covered on coaster seat 51 to make the bone positioned at the end of pulley assembly 5
Rod 71 locks with respect to coaster seat 51;And for the fixation positioned at one end of grating reading head assembly 8, then be by following structure come
Realize:The end that the bone rod 11 is embedded in the arc groove 811 is additionally provided with embedded hole 711, and the pedestal 81 matches institute
State arc groove 811 and open position processed and be provided with a spring resettlement groove 812 and positioning hole (accompanying drawing is not shown), the spring 72 matches
It is installed in the spring resettlement groove 812, and two free ends of the spring 72 are respectively embedded into the embedded hole 711 and described fixed
Position hole, so that the bone rod 71 and the pedestal 81 damp connection locking by the spring 72.
The pattern displacement sensor of the present embodiment installs the scale grating opposing body angle at 45 ° of existing grating scale,
The pulley assembly 5 made can also be moved smoothly in the case of without spring in the scale grating, be reduced to part and assembling
Required precision, improve the measurement accuracy of grating displacement sensor;The pattern displacement sensor of the present embodiment has filled up existing
The single and fixed blank of grating scale mounting structure form, reduce the coaster of grating scale is influenceed by spring restriction, production and assembly
And easy to use, measurement efficiency and precision height.
It is described above, only it is present pre-ferred embodiments, any formal limitation not is made to the present invention, although
The present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any person skilled in the art,
Do not depart from the range of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent change
The equivalent embodiment of change, as long as being without departing from technical solution of the present invention content, refer to according to the technology of the present invention to above example
Any simple modification, equivalent change and modification made, is belonged in the range of technical solution of the present invention.
Claims (9)
- A kind of 1. grating displacement sensor, it is characterised in that:Body silently is provided with including both ends, a type is formed with the body Groove, the interior scale grating being obliquely installed provided with relatively described 45 ° of a body of the type groove, the one of the scale grating thickness direction Side is provided with receiving unit, and opposite side is sequentially provided with pulley assembly and emitting module, and the pulley assembly is relatively described in position 45 ° of body is obliquely installed and is slidably connected with the scale grating, and the pulley assembly can be slided along the scale grating, described Emitting module and receiving unit are connected with the pulley assembly by connecting pole and it can be followed to be slided along the scale grating;Institute State emitting module and receiving unit and be also set to the emitting module cooperation scale in position with the scale grating Grating forms Moire fringe, and the receiving unit can read the Moire fringe and obtain displacement;Also include electrical connection simultaneously Emitting module and the grating reading head assembly of receiving unit work are controlled, the grating reading head assembly activity is installed in the type It is connected on groove and with the pulley assembly by elastic parts, the pulley assembly is slided along the scale grating and driven described Emitting module, receiving unit and grating reading head component matching are mobile and the receiving unit is read More's bar of matching in real time Line and obtain displacement.
- A kind of 2. grating displacement sensor according to claim 1, it is characterised in that:The body is aluminium alloy extrusions sheet Body.
- A kind of 3. grating displacement sensor according to claim 1 or 2, it is characterised in that:The emitting module includes the One PCB and indication grating, the indication grating are arranged on the emitting module and the scale grating in position Between, light source is set in first PCB and controls the control circuit of the light source luminescent, the first PCB circuits Plate is also electrically connected with the grating reading head assembly and is controlled by it and makes the light source luminescent, and the light source luminescent irradiates institute State indication grating and the scale grating and coordinate the indication grating mobile relative to the scale grating and form the More Striped.
- A kind of 4. grating displacement sensor according to claim 3, it is characterised in that:The receiving unit includes second PCB, and second PCB is provided with the photoelectric sensor for reading the Moire fringe and the control photoelectricity The control circuit of working sensor, second PCB are also electrically connected with the grating reading head assembly and by its controls System, measures the photoelectric sensor and reads the Moire fringe and obtain displacement.
- A kind of 5. grating displacement sensor according to claim 4, it is characterised in that:The grating reading head assembly includes Pedestal, main control PCB, the main control PCB and first PCB and second are set on the pedestal PCB is electrically connected;The main control PCB can control first PCB to work and make the light source Light and irradiate the scale grating and indication grating, and/or control the 2nd PCB circuit boards to work and make the photoelectricity Moire fringe described in sensor scan and obtain displacement.
- A kind of 6. grating displacement sensor according to claim 5, it is characterised in that:The pulley assembly includes coaster seat With some rolling bearings, some rolling bearings are connected with the coaster seat by screw and rolled with the scale grating and connect Touch, the coaster seat made is along the scale grating transverse shifting;Also it is formed with the coaster seat and is installed for the elastic parts Mounting groove.
- A kind of 7. grating displacement sensor according to claim 6, it is characterised in that:The coaster seat is provided with five and rolled Bearing, five rolling bearing wherein two rolling bearings and the one side in the scale raster width direction are in rolling contact, another three rolling The one side of dynamic bearing and the scale grating thickness direction is in rolling contact.
- A kind of 8. grating displacement sensor according to claim 7, it is characterised in that:The elastic parts includes bone rod And spring, described bone rod one end are movably embedded in the mounting groove, the other end is movably embedded on the pedestal and opens system In arc groove, the pulley assembly is set to be connected with the grating reading head assembly;It is recessed that the bone rod is embedded in the arc The end of groove is additionally provided with embedded hole, and the pedestal matching arc groove opens position processed and is provided with a spring resettlement groove and positioning Hole, the spring matching is installed in the spring resettlement groove, and two free ends of the spring are respectively embedded into the embedded hole With the positioning hole so that the bone rod connects locking with the pedestal by the spring damping.
- A kind of 9. grating displacement sensor according to claim 8, it is characterised in that:The connecting pole runs through the coaster Component, and two connecting poles are set in the pulley assembly, the both ends of two connecting poles pass through screw and first PCB Lock with the second PCB, the connecting pole is the brass tube of disposed thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964894.XA CN107525470B (en) | 2017-10-17 | 2017-10-17 | Grating displacement sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964894.XA CN107525470B (en) | 2017-10-17 | 2017-10-17 | Grating displacement sensor |
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| Publication Number | Publication Date |
|---|---|
| CN107525470A true CN107525470A (en) | 2017-12-29 |
| CN107525470B CN107525470B (en) | 2023-12-26 |
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| CN201710964894.XA Active CN107525470B (en) | 2017-10-17 | 2017-10-17 | Grating displacement sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111623710A (en) * | 2020-04-21 | 2020-09-04 | 广州市信诺光栅数显有限公司 | Grating ruler reading head pulley based on high-strength high-modulus fiber material |
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