CN208140148U - A kind of angular encoder detection device - Google Patents
A kind of angular encoder detection device Download PDFInfo
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- CN208140148U CN208140148U CN201820685761.9U CN201820685761U CN208140148U CN 208140148 U CN208140148 U CN 208140148U CN 201820685761 U CN201820685761 U CN 201820685761U CN 208140148 U CN208140148 U CN 208140148U
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Abstract
The utility model discloses a kind of angular encoder detection devices, including supporting station, rotating platform, angular encoder shaft fixture and angular encoder shell fixture；It is characterized in that：It further include gear, worm screw, motor, lead screw, nut, guide rail, sliding block, fixed pedestal and laser interferometer；Gear is installed on the rotating platform；Worm screw engages with gear to be connected；The shaft of the motor and one end of worm screw are coaxially fixedly linked；One end of screw rod and the other end of worm screw are coaxially fixedly linked；Guide rail is the string configuration being arranged along the length direction of screw rod, and the nut being set on the sliding block and screw rod being arranged on guide rail is fixedly linked；Laser interferometer includes laser, beam splitter and reflecting mirror；Reflecting mirror is fixedly mounted on sliding block, and beam splitter is fixed on supporting station by fixed pedestal.The angular encoder detection device of the utility model has structure relatively simple, and cost is relatively low, can have the advantages that high static measurement precision and a wide range of angle continuously measure.
Description
Technical field
The utility model belongs to angular encoder field, and in particular to a kind of angular encoder detection device.
Background technique
Angle measurement is an important component of geometric measurement, in the production of modern comfort instrument and testing calibration etc.
Aspect suffers from important application.Angular encoder is the equipment that angular displacement or straight-line displacement are converted into electric signal.Currently, domestic
It mainly include outside mechanical angle measurement, rotary encoder angle measurement, grating approach for the measurement method of angular encoder detection device
Angle measurement, optical means angle measurement, electrical method angle measurement and electromagnetic method angle measurement etc..But existing angular encoder detection dress
It sets respectively and has following shortcoming：
1, traditional mechanical angle measurement such as multiteeth indexing table is unable to continuous division although indexing accuracy is high；
2, Circular gratings are high using Morie fringe principle accuracy of measurement but resolving power is difficult to when being not easy to the heart and dynamic measurement
Guarantee.
3, now the producer of research at present and production angle measurement is also more：As the Heidenhain company of Germany, Opton are public
Department, B&L company, the river the Duo Mo company of Japan, three rich companies etc., the direction of research essentially consists in the measurement for improving static measurement
Precision and resolving power and the respective rate of dynamic measurement, although can reach very high measurement accuracy, acquisition price is high.
Based on this, applicant considers to design that a kind of structure is relatively simple, and cost is relatively low, can have high static measurement essence
The angular encoder detection device that degree and a wide range of angle continuously measure.
Summary of the invention
In view of the above shortcomings of the prior art, technical problem to be solved in the utility model is：How a kind of knot is provided
Structure is relatively simple, and cost is relatively low, the angular encoder that can have high static measurement precision and a wide range of angle continuously to measure
Detection device.
In order to solve the above-mentioned technical problem, the utility model uses the following technical solution：
A kind of angular encoder detection device, including supporting station, rotating platform, angular encoder shaft fixture and angle
Encoder housing fixture；The rotating platform can be mounted in the upper surface of the supporting station, the angle with rotating horizontally
Encoder shaft is fixedly mounted on the center of the rotating platform upper surface with fixture and is used for gripping angle encoder
Shaft, the angular encoder shell are fixedly mounted on the upper surface of the supporting station, and the angle with fixture by support column
Degree encoder housing fixture is vacantly arranged at the surface of the angular encoder shaft fixture, the angular encoder
Shell fixture is used to grip the shell of angular encoder；It is characterized in that：
It further include gear, worm screw, motor, lead screw, nut, guide rail, sliding block, fixed pedestal and laser interferometer；
The gear is coaxially fixedly mounted on the rotating platform；The worm screw is laterally arranged and both ends pass through bearing block
It is fixedly mounted on the upper surface of supporting station, the worm screw engages with the gear to be connected；The motor is fixedly mounted on the branch
The upper surface of cushion cap, and the shaft of the motor and one end of worm screw are coaxially fixedly linked；The both ends of the screw rod pass through bearing block
It is fixedly mounted on the upper surface of supporting station, and one end of the screw rod and the other end of the worm screw are coaxially fixedly linked；It is described
Guide rail is the string configuration being arranged along the length direction of screw rod, is slidably provided with the sliding block on the guide rail, described
The nut being set on sliding block and the screw rod is fixedly linked；
The laser interferometer includes the length direction successively laser, beam splitter of face setting and anti-in the guide rail
Penetrate mirror；The reflecting mirror is fixedly mounted on the upper surface of the sliding block, and the beam splitter is fixed on the branch by fixed pedestal
The upper surface of cushion cap.
Laser interferometer is a kind of existing equipment, and the use of laser interferometer is the prior art, and therefore not to repeat here.Laser
Interferometer is the measurement that the geometric senses such as length, straightness and flatness are realized based on laser interference principle, at present in measurement verification
Calibration and industrial application it is all very extensive, the advantage is that measurement sensitivity and precision are very high, using double-frequency laser as
The resolving power and precision of the interferometer displacement measurement of light source can reach Nano grade.
The angular encoder detection device of the utility model is before use, the shell of angular encoder is fixedly mounted first
On angular encoder shell fixture, angular encoder shaft is clamped to the shaft of angular encoder with fixture.
Then, starting motor comes rotary worm and simultaneously synchronous drive gear (gear and rotating platform synchronous rotary) and silk
Bar rotation, the rotation of rotating platform also drive the center angular encoder shaft fixture and angular coding of rotating platform
Device shaft rotates (angular displacement that can obtain angular encoder).At the same time, the angular displacement of rotating platform is changed into can be by swashing
Optical interferometer is come the straight-line displacement that accurately measures, to carry out angle using the high resolution of laser interferometer displacement measurement
Accurate measurement, can have the function of that high static measurement precision and a wide range of angle continuously measure (can get accurate angle position
Shifting value, and it is used for relatively detecting whether the measurement of angular encoder is correct compared with the angular displacement of angular encoder).
The corollary equipment that the angular encoder detection device of the utility model can be used as laser interferometer uses, and has structure
Simply, easy to carry, the measurement function of laser interferometer is extended, and will not influence the normal use of laser interferometer, and
And acquisition cost can be greatly saved, there is very high practical value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of angular encoder.
Fig. 2 is the front view of the angular encoder detection device of the utility model.
Fig. 3 is the top view of the angular encoder detection device of the utility model.
Fig. 4 is the cross-sectional view at the rotating platform of the angular encoder detection device of the utility model.
Fig. 5 is the structural representation of the angular encoder shaft fixture of the angular encoder detection device of the utility model
Figure.
Fig. 6 is the structural schematic diagram of the angular encoder shell fixture of the angular encoder detection device of the utility model
(vertical view).
In figure label for：
Angular encoder：101 shafts, 102 shells, 103 pilot holes；
2 supporting stations；
3 rotating platforms：301 first pillars, 302 second pillars, 303 third pillars；
4 gears：401 enhancing engaging sections；
5 worm screws；
6 motors；
7 lead screws；
8 guide rails；
9 sliding blocks；
10 fixed pedestals；
Laser interferometer：1101 lasers, 1102 beam splitters, 1103 reflecting mirrors；
12 Block Cartridges；
13 plane bearings；
14 scroll chucks：1401 claws；
15 support plates：1501 holes, 1502 graduation marks；
16 fixed plates：1601 limited blocks, 1602 (there are three the encoders of pilot hole for corresponding tool) three mounting holes, 1603
(there are four the encoders of pilot hole for corresponding tool) four mounting holes；
17 support columns.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
When specific implementation：As shown in Figures 2 to 6, a kind of angular encoder detection device, including supporting station 2, rotating platform
3, angular encoder shaft fixture and angular encoder shell fixture；The rotating platform 3 can be mounted on rotating horizontally
In the upper surface of the supporting station 2, the angular encoder shaft is fixedly mounted on 3 upper surface of rotating platform with fixture
Center and the shaft 101 for being used for gripping angle encoder, the angular encoder shell are solid by support column 17 with fixture
Dingan County is mounted in the upper surface of the supporting station 2, and the angular coding is vacantly arranged in the angular encoder shell fixture
At the surface of device shaft fixture, the angular encoder shell fixture is used to grip the shell of angular encoder
102；
It further include gear 4, worm screw 5, motor 6, lead screw 7, nut, guide rail 8, sliding block 9, fixed pedestal 10 and laser interference
Instrument；
The gear 4 is coaxially fixedly mounted on the rotating platform 3；The worm screw 5 is laterally arranged and both ends pass through axis
The upper surface that seat is fixedly mounted on supporting station 2 is held, the worm screw 5 engages with the gear 4 to be connected；The motor 6 is fixedly mounted
In the upper surface of the supporting station 2, and the shaft of the motor 6 and one end of worm screw 5 are coaxially fixedly linked；The both ends of the screw rod
The upper surface of supporting station 2 is fixedly mounted on by bearing block, and the other end of one end of the screw rod and the worm screw 5 is coaxially solid
It is fixed to be connected；The guide rail 8 is the string configuration being arranged along the length direction of screw rod, is slidably provided on the guide rail 8
The nut being set on the sliding block 9, the sliding block 9 and the screw rod is fixedly linked；
The laser interferometer includes in the length direction laser 1101 that successively face is arranged of the guide rail 8, beam splitting
Mirror 1102 and reflecting mirror 1103；The reflecting mirror 1103 is fixedly mounted on the upper surface of the sliding block 9, and the beam splitter 1102 is logical
Cross the upper surface that fixed pedestal 10 is fixed on the supporting station 2.
When implementation, as known to those skilled in the art：Laser interferometer when in use, laser 1101,1102 and of beam splitter
Reflecting mirror 1103 be etc. high settings.
When implementation, as known to those skilled in the art：The angular displacement of angular encoder is retrieved as the prior art, angular coding
The acquisition of the angular displacement of device can be known by single-chip microcontroller or PLC.
When implementation, as known to those skilled in the art：Laser interferometer measures the prior art that is retrieved as of displacement, and laser is dry
The acquisition that interferometer measures displacement can be obtained by matching used computer.
The realization principle of the technical program is：
The coherent source that laser interferometer issues is divided into two-beam by beam splitter 1102, and light beam is as reference light by dividing
The reflecting mirror 1103 of beam mirror 1102 is reflected back the receiving end of laser 1101, and another light beam is as measurement light by fixed on sliding block 9
The reflecting mirror 1103 of installation is reflected back the receiving end of laser 1101 and reference light is interfered, thus obtain beam splitter 1102 with
Displacement between reflecting mirror 1103.If it is Δ L that sliding block 9, which moves axially distance, band moving gear 4 rotates rotating platform 3
Angle is Δ i, then just having：
I.e.
R is the radius of gear 4, and when use is first adjusted laser interferometer light path, it is ensured that laser optical path and screw rod move
Dynamic direction is coaxial or parallel.Then it is calibrated using zero groove of gear 4, i.e., fluted disc, which rotates a circle, reads laser interferometer
The respective value of displacement and angle is calculated in change in displacement value, saves the value for angle measurement.
As shown from the above formula, the angular resolution of above-mentioned angular encoder detection device and the diameter of gear 4 and swash
The resolving power of optical interferometer is related, and fluted disc radius is bigger, and the resolving power of laser interferometer is higher, then the resolving power of angle measurement is got over
It is high.It being calculated according to above formula, the resolution ratio of laser interferometer is 0.01 μm, if fluted disc radius is 100mm, then ideally, it can
The angular resolution for obtaining the device is 0.02 ".
Wherein, it is in round pie that the rotating platform 3 is whole, is convexed under the lower surface center of the rotating platform 3
There is whole first pillar 301 cylindrical, has been convexed under the lower surface center of first pillar 301 whole in circle
Cylindrical second pillar 302；The integral third cylindrical of convex is convex under the lower surface center of second pillar 302
Column 303；
4 integral assembling of gear is in second pillar 302, and 4 upper surface of the gear and first pillar 301
Lower end surface is fixedly linked by screw；
The upper surface of the supporting station 2 is fixedly installed with whole cylindrical Block Cartridge 12, and the third pillar 303 is inserted
In the centre bore of the Block Cartridge 12, and the center hole wall of the lateral surface of the third pillar 303 and the Block Cartridge 12
Between for sliding connection；
It is abutted between the lower end surface of the gear 4 and the upper surface of the Block Cartridge 12 and is provided with plane bearing 13.
When implementation, the outside increment of the preferably described gear 4, which extends axially upward, is formed with enhancing engaging section 401, the increasing
The medial surface of strong engaging section 401 is connected with 301 lateral surface of the first pillar.
The use of above structure not only to be more easily implemented quick assembling between rotating platform 3 and gear 4；It is also convenient for
Rotating platform 3 is quickly and accurately mounted on Block Cartridge 12.
Wherein, angular encoder shaft is scroll chuck 14 with fixture, three 1401 shapes of claw of the scroll chuck 14
Shape is respectively the arc-shaped block structure of one third, and three claws 1401 collectively form a clamping annulus when closing up.
When implementation, scroll chuck includes chuck body, three claws and claw driving mechanism composition.Wherein, claw driving machine
Structure includes dish-shaped bevel gear and spanner；
The shape of chuck body is cylinder-shaped and inside has hollow cavity, and the top surface of chuck body is provided with for claw radially
The sliding slot of sliding, and the lower end of the sliding slot is connected to the hollow cavity of chuck body, the sliding slot is equal for the circumferencial direction around chuck body
Even spaced three；Three claw lower parts are targeting part, and the targeting part of three claws is slideably inserted into three
In sliding slot, and the lower end surface of three claws has the horizontal dish-shaped umbrella tooth being rotatably arranged in the hollow cavity of screw thread and chuck body
The screw thread of wheel upper surface is meshed；
Spanner is rotatably arranged on chuck body, and the outer end face of spanner has the square hole of rotation, the inner end of spanner
With being meshed with dish-shaped bevel gear.When rotating dish-shaped bevel gear by square hole, the screw thread of dish-shaped bevel gear upper surface is same
When drive three claws to center close to or far to clamp the angular encoder shaft of different-diameter.
Angular encoder shaft fixture is used as using scroll chuck 14, can be used in gripping multiple diameter angle volume
While code device shaft, additionally it is possible to guarantee the synchronism that three claws 1401 move radially, to accurately guarantee angular coding
Device shaft is coaxial with scroll chuck 14, and the detection accuracy of this angular encoder detection device is effectively ensured.
Wherein, the interior diameter of the clamping annulus is 5 millimeters, and overall diameter is 10 millimeters.
While the clamping annulus of above-mentioned size can guarantee itself cramped construction, it can be used in clamping most of a variety of
Diameter angular encoder shaft, practicability are good.
Wherein, clamping face is abound with and is provided with burr on the inside of clamping annulus.
When implementation, the preferably single burr is along on radial pico- protrusion (height of projection is 0.1 millimeter or so) and edge
Axially extending bar shaped burr.In this way, advantage i.e. most simple, easier to process with structure.
The setting of above-mentioned burr, be capable of increasing with the frictional force after angular encoder shaft contacts, thus have more preferably
Clamping effect.
Wherein, angular encoder shell fixture includes one piece of support plate 15 and four pieces of fixed plates 16；
The whole support plate 15 is in plate-like structure, and the lower surface surrounding of the support plate 15 passes through more vertical branch
Dagger 17 is fixedly mounted on the upper surface of the supporting station 2；
The center position of the support plate 15 is located at the surface of the angular encoder shaft fixture and vertically passes through
It wears and is equipped with a circular perforation；Circumferentially direction uniform intervals are provided with four in the support plate 15 around the perforation
The hole 1501 of a guiding, each hole 1501 are the strip radially extended along the perforation；
Four pieces of fixed plates 16 are respectively quadrant arc block structure, and four pieces of fixed plates 16 and four holes 1501 are right
Should be arranged, and it is convex under every piece of 16 outboard end of fixed plate be fixed with one piece of limited block 1601, the limited block 1601 is slidably matched ground
It is arranged in corresponding hole 1501, and the limited block 1601 is the consistent strip of length direction with the hole 1501 at place
Shape, the lower end surface of the limited block 1601 are vertically and fixedly provided with the threaded post positioned at 1501 lower outer of hole, revolve in the threaded post
It is connected to locking nut (not shown)；
Four pieces of fixed plates 16 can close up when being moved at inner terminal along each hole 1501 and collectively form a fixation
With annulus, multiple mounting holes are vertically provided on the clamping rings, the multiple mounting hole can be with angular encoder shell
Upper multiple pilot holes 103 face.
When implementation, it is preferable that the radius of the perforation is 15 millimeters, and the length in each hole 1501 is 80 millimeters.
It currently, the pilot hole on the encoder sold on the market is mutual 3 in 120 degree of angles, or is mutually in 90 degree of angles
4.In this regard, four pieces of fixed plates 16 are arranged in this programme, and three mounting holes 1602 and three holes are set in fixed plate 16
Encoder match four mounting holes 1603 be set to use to match and use with the encoder in four holes, so that our
Case has better versatility.
Above-mentioned angular encoder shell fixture not only has structure simple, easily fabricated advantage；When in use, moreover it is possible to
The position by adjusting four pieces of fixed plates 16 is reached to match with different size of angular encoder shell, and makes multiple installations
Hole is faced with multiple pilot holes on angular encoder shell, so as to be fixed on angular encoder shell by screw
Four pieces of fixed plates 16, therefore also there is easy to use, the good advantage of versatility.
Wherein, the upper surface of the support plate 15 is equipped with graduation mark 1502, and the graduation mark 1502 is around the perforation
Circle, and the graduation mark 1502 is along a plurality of of 5 millimeters of spaced radial of perforation settings.
The setting of above-mentioned graduation mark 1502, can be as four pieces of fixed plates 16 along the reference of the equidistant displacement in hole 1501
Line helps four pieces of fixed plates 16 more precisely to move.
The above is only the utility model preferred embodiment, need to point out it is that those skilled in the art are not being departed from
Under the premise of the technical program, the technical solution for the several modifications and improvements made should equally be contemplated as falling within the claims and want
Seek the range of protection.
Claims (7)
1. a kind of angular encoder detection device, including supporting station, rotating platform, angular encoder shaft fixture and angle are compiled
Code device shell fixture；The rotating platform can be mounted in the upper surface of the supporting station with rotating horizontally, and the angle is compiled
Code device shaft is fixedly mounted on the center of the rotating platform upper surface and turning for gripping angle encoder with fixture
Axis, the angular encoder shell are fixedly mounted on the upper surface of the supporting station, and the angle with fixture by support column
Encoder housing fixture is vacantly arranged at the surface of the angular encoder shaft fixture, the angular encoder shell
Body fixture is used to grip the shell of angular encoder；It is characterized in that：
It further include gear, worm screw, motor, lead screw, nut, guide rail, sliding block, fixed pedestal and laser interferometer；
The gear is coaxially fixedly mounted on the rotating platform；The worm screw is laterally arranged and both ends are fixed by bearing block
It is mounted on the upper surface of supporting station, the worm screw engages with the gear to be connected；The motor is fixedly mounted on the supporting station
Upper surface, and the shaft of the motor and one end of worm screw are coaxially fixedly linked；The both ends of the lead screw are fixed by bearing block
It is mounted on the upper surface of supporting station, and one end of the lead screw and the other end of the worm screw are coaxially fixedly linked；The guide rail
For the string configuration being arranged along the length direction of lead screw, the sliding block, the sliding block are slidably provided on the guide rail
It is fixedly linked with the nut being set on the lead screw；
The laser interferometer includes length direction laser, beam splitter and the reflection that successively face is arranged in the guide rail
Mirror；The reflecting mirror is fixedly mounted on the upper surface of the sliding block, and the beam splitter is fixed on the bearing by fixed pedestal
The upper surface of platform.
2. angular encoder detection device according to claim 1, it is characterised in that：The rotating platform is integrally in cake
Shape convexes into whole first pillar cylindrical, first pillar under the lower surface center of the rotating platform
Lower surface center under convex into whole second pillar cylindrical；The lower surface center of second pillar
The lower integral third pillar cylindrical of convex；
The gear integral assembling is in second pillar, and the gear upper surface and first pillar lower end surface pass through spiral shell
Nail is fixedly linked；
The upper surface of the supporting station is fixedly installed with whole cylindrical Block Cartridge, and the third pillar is inserted into described insert
It in the centre bore for filling seat, and is the company of being slidably matched between the lateral surface of the third pillar and the center hole wall of the Block Cartridge
It connects；
It is abutted between the lower end surface of the gear and the upper surface of the Block Cartridge and is provided with plane bearing.
3. angular encoder detection device according to claim 1, it is characterised in that：Angular encoder shaft is with fixture
Scroll chuck, three claw shapes of the scroll chuck are respectively the arc-shaped block structure of one third, and three claws are closing
A clamping annulus is collectively formed when holding together.
4. angular encoder detection device according to claim 3, it is characterised in that：The clamping interior diameter of annulus
It is 5 millimeters, overall diameter is 10 millimeters.
5. angular encoder detection device according to claim 3, it is characterised in that：Clamping on the inside of the clamping annulus
Face, which is abound with, is provided with burr.
6. angular encoder detection device according to claim 1, it is characterised in that：The angular encoder shell folder
Tool includes one piece of support plate and four pieces of fixed plates；
The support plate is integrally in plate-like structure, and the lower surface surrounding of the support plate is fixed by more vertical support columns
It is mounted on the upper surface of the supporting station；
The center position of the support plate is located at the surface of the angular encoder shaft fixture and vertically through setting
There is a circular perforation；Circumferentially there are four guiding to use for the setting of direction uniform intervals in the support plate around the perforation
Hole, each hole is the strip radially extended along the perforation；
Four pieces of fixed plates are respectively quadrant arc block structure, and four pieces of fixed plates are correspondingly arranged with four holes, and every
Convex under block fixed plate outboard end to be fixed with one piece of limited block, the limited block is arranged in corresponding hole with being slidably matched, and
The limited block is the consistent strip of length direction with the hole at place, and the lower end surface of the limited block is vertically and fixedly provided with positioned at item
The threaded post of hole lower outer is screwed with locking nut in the threaded post；
A fixed annulus can be closed up and be collectively formed to four pieces of fixed plates when being moved at inner terminal along each hole, described
It fixes with multiple mounting holes are vertically provided on annulus, the multiple mounting hole can be with multiple assembly on angular encoder shell
Hole faces.
7. angular encoder detection device according to claim 6, it is characterised in that：The upper surface of the support plate is equipped with
Graduation mark, the graduation mark is the circle around the perforation, and the graduation mark is along 5 millimeters of spaced radial of the perforation
What is be arranged is a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820685761.9U CN208140148U (en) | 2018-05-09 | 2018-05-09 | A kind of angular encoder detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820685761.9U CN208140148U (en) | 2018-05-09 | 2018-05-09 | A kind of angular encoder detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296724A (en) * | 2019-07-31 | 2019-10-01 | 烟台环球数控科技有限公司 | A kind of polarization angle encoder |
| CN111665620A (en) * | 2020-06-10 | 2020-09-15 | 伊普希龙（天津）科技有限公司 | Michelson interferometer measuring device and measuring method thereof |
-
2018
- 2018-05-09 CN CN201820685761.9U patent/CN208140148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296724A (en) * | 2019-07-31 | 2019-10-01 | 烟台环球数控科技有限公司 | A kind of polarization angle encoder |
| CN111665620A (en) * | 2020-06-10 | 2020-09-15 | 伊普希龙（天津）科技有限公司 | Michelson interferometer measuring device and measuring method thereof |
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