CN107990923B - Split type encoder - Google Patents
Split type encoder Download PDFInfo
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- CN107990923B CN107990923B CN201711465635.9A CN201711465635A CN107990923B CN 107990923 B CN107990923 B CN 107990923B CN 201711465635 A CN201711465635 A CN 201711465635A CN 107990923 B CN107990923 B CN 107990923B
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- 239000002131 composite material Substances 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
- G01D5/38—Forming the light into pulses by diffraction gratings
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Abstract
The application discloses a split encoder, which comprises a grating assembly, a first encoder and a second encoder, wherein a threaded hole is formed in a main shaft; the reading head assembly penetrates through the grating assembly and is provided with a first arc-shaped positioning block; the composite positioner is provided with a positioning hole matched with the threaded hole in the axial direction and a second arc-shaped positioning block matched with the first arc-shaped positioning block; the first arc-shaped positioning block and the second arc-shaped positioning block respectively comprise at least two arc-shaped protrusions; the locator is the locator with the protruding cooperation use of arc. It is thus clear that, the above-mentioned technical scheme that this application is disclosed, the main shaft of grating subassembly is fixed through the locating hole of compound locator, uses with the locator cooperation through the second arc locating piece that accords with the encoder, fixes the reading head subassembly to through the mode of fixing respectively, guarantee that the grating subassembly and the reading head subassembly of split type encoder are in suitable relative position, and then reduce the complexity of split type encoder and user side assembly.
Description
Technical Field
The invention relates to the field of machinery, in particular to a split type encoder.
Background
According to "split type grating rotary encoder in the mechanical industry standard of the people's republic of china — grating rotary encoder (JB/T11498-2013"): the grating rotary encoder' which is composed of at least two basic parts, namely a circular grating disk and a reading head, has no rotating reference, and can be divided into a split encoder and an integral encoder, wherein the split encoder can be divided into two parts, namely a fixed reading head component and a rotating grating component, as shown in figure 1.
Because the split type encoder reading head assembly is separated from the grating assembly, the split structure meter can reduce the cost, save the space and prolong the service life of the encoder on the basis of improving the reliability of the product. Therefore, with the popularization of concepts such as automation, intellectualization and miniaturization, the split encoder is popular with users. However, it is very complicated for the user to install and process the product because the relative position between the reading head and the grating needs to be ensured.
In the prior art, the following mounting techniques are adopted, as shown in fig. 2, firstly, the encoder body is fixed with the housing of the user side; fixing the grating component and a rotating shaft of a user; and finally, fixing the PCB assembly on the body, and adjusting the relative position of the grating assembly and the reading head to finish assembly.
However, with the above mounting techniques, the mechanical interface requirements for the user are high. Specifically, the user side shell is provided with a spigot with a positioning function, and the relative position of the reading head and the grating assembly is ensured after the body assembly is assembled. As shown in fig. 3, both the Φ D and Φ D dimensions have strict dimensional requirements, and in addition, both have coaxiality requirements. Moreover, the mounting accuracy is not easy to guarantee: in the user assembly process, the accuracy of the output signal of the encoder is reduced and even the encoder cannot work normally due to the reasons that the matching precision among all parts is not enough or the relative position adjustment is not accurate enough.
Therefore, the technical personnel of the present invention need to solve the problem of how to ensure the relative position between the reading head and the grating and reduce the complexity of the assembly of the split encoder and the user end.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a split encoder, which ensures the relative position between the reading head and the grating, and reduces the complexity of the assembly of the split encoder and the user end. The specific scheme is as follows:
a split encoder, comprising:
the main shaft is provided with a grating component with a threaded hole;
the reading head assembly penetrates through the grating assembly and is provided with a first arc-shaped positioning block;
the composite positioner is provided with a positioning hole matched with the threaded hole in the axial direction and a second arc-shaped positioning block matched with the first arc-shaped positioning block in use;
the first arc-shaped positioning block and the second arc-shaped positioning block respectively comprise at least two arc-shaped protrusions; the locator is the locator with the protruding cooperation of arc is used.
Preferably, the grating assembly comprises a grating disk and a grating disk base cooperating with the grating disk.
Preferably, the reading head assembly comprises a PCB printed board.
Preferably, the split encoder further comprises a screw passing through the positioning hole and the threaded hole.
Preferably, the screw comprises a socket set screw.
Preferably, the hexagonal set screw comprises a female hexagonal end set screw.
The invention provides a split encoder which comprises a grating assembly, wherein a threaded hole is formed in a main shaft; the reading head assembly penetrates through the grating assembly and is provided with a first arc-shaped positioning block; the composite positioner is provided with a positioning hole matched with the threaded hole in the axial direction and a second arc-shaped positioning block matched with the first arc-shaped positioning block; the first arc-shaped positioning block and the second arc-shaped positioning block respectively comprise at least two arc-shaped protrusions; the locator is the locator with the protruding cooperation use of arc. Therefore, according to the technical scheme disclosed by the invention, the spindle of the grating component is fixed through the positioning hole of the composite positioner, and the reading head component is fixed through the matching use of the second arc-shaped positioning block conforming to the encoder and the positioner, so that the grating component and the reading head component of the split encoder are ensured to be in proper relative positions in a respective fixing mode, and the complexity of assembling the split encoder and a user side is further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the components of a split encoder;
FIG. 2 is a schematic view of the installation of a split encoder in the prior art;
FIG. 3 is a schematic structural diagram of Φ D and Φ D in a split encoder in the prior art;
FIG. 4 is a schematic diagram of an installation of a split encoder according to an embodiment of the present invention;
fig. 5 (a) is a schematic structural diagram of a second arc-shaped positioning block and a corresponding positioner of the split encoder provided by the present invention;
fig. 5 (b) is a schematic view of the working states of the second arc-shaped positioning block and the corresponding positioner of the split encoder provided by the present invention;
fig. 6 (a) is a schematic structural diagram of a first circumferential positioning block and a corresponding positioner of a split encoder provided in the prior art;
fig. 6 (b) is a schematic diagram of the working states of the first circumferential positioning block and the corresponding positioner of the split encoder provided in the prior art.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a split encoder, which comprises a grating component 1, a grating component and a signal processing component, wherein a threaded hole 11 is formed in a main shaft; a reading head component 2 which passes through the grating component 1 and is provided with a first arc-shaped positioning block 21; the composite positioner 3 comprises a positioner 31, a positioning hole 32 axially arranged for being matched with the threaded hole and a second arc-shaped positioning block 33 axially arranged for being matched with the first arc-shaped positioning block 21; the first arc-shaped positioning block 21 and the second arc-shaped positioning block 33 comprise at least two arc-shaped protrusions; the retainer 31 is a retainer used in cooperation with the arc-shaped protrusion.
It should be noted that the grating assembly 1 includes, but is not limited to, a grating disk and a grating disk base used in cooperation with the grating disk, specifically, the grating disk is a circular part passing through the spindle, and the grating disk is provided with narrow slits of different shapes according to the needs of the user. The readhead assembly 2 includes, but is not limited to, a body, a printed board, a housing, a light emitting device, etc. The specific structures of the grating assembly 1 and the reading head assembly 2 are consistent with the prior art, and are not described in detail herein.
In the embodiment of the present invention, a schematic structural diagram of a first arc-shaped positioning block 21 arranged on the reading head assembly 2, a second arc-shaped positioning block 33 arranged on the composite positioner 3, and a corresponding positioner 31 is shown in fig. 5 (a); fig. 5 (b) shows a schematic view of the working state of the second arc-shaped positioning block 33 and the corresponding positioner 31. It should be added that, in the prior art, a schematic structural diagram of a circumferential positioning block and a corresponding positioner is generally used as shown in fig. 6 (a); fig. 6 (b) shows a schematic structural diagram of the working state of the circumferential positioning block and the corresponding positioner. Under the condition that the size of the positioner is limited, the positioner corresponding to the circumferential positioning block can only play a role due to insufficient coverage angle of the matched positioning arcyOrientation of direction due to elasticity of materialxThe directional positioning effect is very weak. Once, during the transportation and installation of the split encoder, the split encoder suffers fromxThe directional external force is easy to cause positioning failure.
The first arc-shaped positioning block 21 and the second arc-shaped positioning block 33 provided by the invention both comprise at least two arc-shaped protrusions; the retainer 31 is a retainer used in cooperation with the arc-shaped protrusion, as shown in fig. 5 (a). When the arc-shaped positioning block is adopted for positioning, the occupied space of the positioner 31 is the same as that of the circumference positioning block, but the angle covered by the arc is increased, even if the split encoder is transported and installed, the arc comes fromxThe external force in the direction can still effectively position. It should be added that, in the embodiment of the present invention, at least one arc-shaped positioning block is disposed in each of the reading head assembly 2 and the composite positioner 3.
It should be further noted that, in the embodiment of the present invention, the threaded hole 11 and the positioning hole 32 are fixed by screws, so that the encoder reading head assembly 2 and the grating assembly 1 maintain the axial position relationship required by a user, and the relative position relationship between the reading head assembly 2 and the grating assembly 1 does not change during transportation of the split encoder. The screws are usually set by hexagon socket head cap screws, and pass through the threaded holes 11 and the positioning holes 32 to fix the encoder 3 and the grating assembly 1. It should be noted that the socket head set screw is also called socket head machine, and belongs to a fastener product. The screw has no head, is provided with a right inner hexagonal groove, has a concave end at the tail part of the screw, and needs to be installed and used by a hexagonal wrench matched with the screw in size.
In the installation process of the split encoder, firstly, a user end spindle is inserted into a position corresponding to the grating component 1 from top to bottom, and a hexagonal wrench corresponding to the hexagonal socket end holding screw is used for rotating the hexagonal socket end holding screw to the position connecting the grating component 1 and the user spindle from the position connecting the composite positioner 3 and the grating component 1, so that the user end and the split encoder are called as a whole, correspondingly, a positioner 31 used for fixing the composite positioner 3 and the reading head component 2 is removed, and then the composite positioner 3 is removed, and it needs to be explained that in the process of installing the split encoder on the user end, the relative position relation between the reading head component 2 and the grating component 1 is ensured not to change.
The embodiment of the invention provides a split encoder which comprises a grating assembly, a first encoder and a second encoder, wherein a threaded hole is formed in a main shaft; the reading head assembly penetrates through the grating assembly and is provided with a first arc-shaped positioning block; the composite positioner 3 comprises a positioner 31, a positioning hole which is axially arranged and matched with the threaded hole for use, and a second arc-shaped positioning block which is matched with the first arc-shaped positioning block for use; the first arc-shaped positioning block and the second arc-shaped positioning block respectively comprise at least two arc-shaped protrusions; the retainer 31 is a retainer used in cooperation with the arc-shaped protrusion. Therefore, according to the technical scheme disclosed by the invention, the spindle of the grating component is fixed through the positioning hole of the composite positioner 3, and the reading head component is fixed through the matching use of the second arc-shaped positioning block of the composite encoder and the positioner 31, so that the grating component and the reading head component of the split encoder are ensured to be in proper relative positions in a respective fixing mode, and the assembling complexity of the split encoder and a user side is further reduced.
In addition, the split encoder provided by the embodiment of the invention also has the following advantages:
1. the split type encoder has low requirement on mechanical interface of users
In the prior art, a split encoder product needs a special positioning step on a mechanical interface of a user to ensure the relative position relationship between a reading head assembly and a grating assembly. The split encoder provided by the embodiment of the invention utilizes the composite positioner to ensure the position relation of the parts after the encoder is installed, thereby solving the technical problem and reducing the mechanical manufacturing difficulty of users.
2. Simple installation
In the installation process of the split type encoder in the prior art, the accuracy of the output signal of the encoder is reduced and even the encoder cannot work normally due to the reasons that the matching precision among all parts is not enough, or the relative position adjustment is not accurate enough. The split encoder provided by the embodiment of the invention reduces the installation deviation by utilizing the matching between the composite positioner and the encoder part and the screw fastening, thereby reducing the installation difficulty.
3. Without requiring post-installation debugging
The split encoders in the prior art require special auxiliary tools to adjust or calibrate the product after installation. According to the split encoder provided by the embodiment of the invention, the reading head assembly and the grating assembly are connected by using the composite positioner, so that the state of the split encoder after being installed at a user end is the same as the factory state, and debugging and correction can be completed before the encoder leaves a factory without debugging after installation.
4. Convenient zero position adjustment
According to the split encoder provided by the embodiment of the invention, the reading head assembly and the grating assembly are fixed together by means of the composite positioner and cannot rotate relatively. The relative position of the composite positioner in the factory can still be kept after the composite positioner is disassembled, and the split encoder product can be ensured to be the position required by a user after being installed.
5. Is little influenced by environment
The split encoder provided by the embodiment of the invention adopts integrated installation, and the grating component and the reading head component are not directly exposed outside, so that the split encoder is slightly influenced by the environment.
6. Compound locator repeatedly usable
The split encoder product and the composite positioner arranged at the user side provided by the embodiment of the invention can be detached and recovered, thereby greatly reducing the production and manufacturing cost and avoiding waste.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The present invention provides a split encoder, which is described in detail above, and the principle and the implementation of the present invention are described herein by using specific embodiments, and the description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (6)
1. A split encoder, comprising:
the main shaft is provided with a grating component with a threaded hole;
the reading head assembly penetrates through the grating assembly and is provided with a first arc-shaped positioning block;
the composite positioner is provided with a positioning hole matched with the threaded hole in the axial direction and a second arc-shaped positioning block matched with the first arc-shaped positioning block in use;
the first arc-shaped positioning block and the second arc-shaped positioning block respectively comprise at least two arc-shaped protrusions; the locator is the locator with the protruding cooperation use of arc.
2. The split encoder of claim 1, wherein the grating assembly comprises a grating disk and a grating disk mount for cooperating with the grating disk.
3. The split encoder of claim 1, wherein the read head assembly comprises a PCB printed board.
4. The split encoder of claim 1, further comprising a screw passing through the locating hole and the threaded hole.
5. The split encoder of claim 4, wherein the screw comprises a socket set screw.
6. The split encoder of claim 5, wherein the socket set screw comprises a socket set female end set screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465635.9A CN107990923B (en) | 2017-12-28 | 2017-12-28 | Split type encoder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465635.9A CN107990923B (en) | 2017-12-28 | 2017-12-28 | Split type encoder |
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| CN107990923A CN107990923A (en) | 2018-05-04 |
| CN107990923B true CN107990923B (en) | 2023-03-28 |
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| CN109269536A (en) * | 2018-10-29 | 2019-01-25 | 长春荣德光学有限公司 | Grating and the integral Split encoder of motor shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203274767U (en) * | 2013-04-19 | 2013-11-06 | 长春荣德光学有限公司 | Bearing-free cone centering type encoder |
| CN104505967B (en) * | 2015-01-04 | 2017-03-01 | 浙江众邦机电科技有限公司 | The no split type case of shell servomotor and its installation method and sewing machine |
| CN204928485U (en) * | 2015-08-24 | 2015-12-30 | 鞍钢股份有限公司 | Components of a whole that can function independently motor encoder bracket |
| CN204961556U (en) * | 2015-09-06 | 2016-01-13 | 长春永盛伟业科技有限公司 | Small -size photoelectric encoder's branch axon subassembly |
| CN105371881B (en) * | 2015-11-22 | 2017-07-28 | 长春禹衡光学有限公司 | A kind of Split encoder of integrative installation technology |
| CN205156941U (en) * | 2015-11-22 | 2016-04-13 | 长春禹衡光学有限公司 | Take split type encoder grating seat of self -align function |
| CN205489948U (en) * | 2015-12-31 | 2016-08-17 | 上海新时达电气股份有限公司 | Motor shaft device |
| CN106141377A (en) * | 2016-08-02 | 2016-11-23 | 无锡研奥电子科技有限公司 | The signal pickup assembly of rotary arc sensor |
| CN106077903A (en) * | 2016-08-02 | 2016-11-09 | 无锡研奥电子科技有限公司 | A kind of rotary arc sensor |
| CN106123934B (en) * | 2016-08-26 | 2019-01-25 | 长春禹衡光学有限公司 | A kind of split type grating encoder |
| CN106813694B (en) * | 2016-12-21 | 2019-05-24 | 浙江众邦机电科技有限公司 | A kind of bearing-free encoder |
| CN207649630U (en) * | 2017-12-28 | 2018-07-24 | 长春禹衡光学有限公司 | A kind of Split encoder |
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