CN109483327A - A kind of encoder - Google Patents
A kind of encoder Download PDFInfo
- Publication number
- CN109483327A CN109483327A CN201910004811.1A CN201910004811A CN109483327A CN 109483327 A CN109483327 A CN 109483327A CN 201910004811 A CN201910004811 A CN 201910004811A CN 109483327 A CN109483327 A CN 109483327A
- Authority
- CN
- China
- Prior art keywords
- magnetic ring
- ring component
- shell
- reading head
- head assembly
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/10—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting speed or number of revolutions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/248—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves using special electromagnetic means or methods
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a kind of encoders, including magnetic ring component, to magnetic ring component with the reading head assembly of preset radial gap setting and with magnetic ring component coaxial arrangement, to protect magnetic ring component and read head assembly protection flange, reading head assembly be fixedly installed in protection flange.Above-mentioned encoder can not only save reading head bracket, space is saved, and also ensures that the fractional radial position of reading head assembly and magnetic ring component will not change, it is easy to assembly, it is not easy to make mistakes, while encoder integrally can achieve the effect of anti-iron filings, Water-proof and oil-proof.
Description
Technical field
The present invention relates to encoder techniques field, in particular to a kind of encoder.
Background technique
Machine tool chief axis is that the mechanical quantities such as the angular displacement of output shaft, angular speed can be converted into corresponding electric pulse with encoder
Signal, and with digital output, it is common motor positioning device, Ke Yijing in industry that encoder, which is used to measure the speed of mainshaft,
The angular displacement of true test machine tool chief axis and rotation position.
Encoder is typically mounted at the tail end of machine tool chief axis, and since structure limits, this kind of encoder can all be made into ring-like, set
On machine tool chief axis.It in the prior art mainly include magnetic coder and raster rotary coder, wherein magnetic coder mainly wraps
Include magnetic ring component, reading head assembly and reading head bracket；Raster rotary coder mainly includes main shaft, main body, shell, sealing
Lid, grating disc and electric component.As shown in FIG. 1, FIG. 1 is the assembling schematic diagrams of magnetic coder in the prior art；Wherein, it reads
First 02 is fixedly installed in lathe fixing end 04 by reading head bracket 03, meanwhile, when encoder operates, need to examine using oscillograph
Signal is surveyed, by the waist hole on reading head bracket 03, the gap of reading head 02 and magnet ring 01 is adjusted, keeps signal up to standard, however, magnetic
Difficulty is debugged in the reading head 02 of encoder and the gap of magnet ring 01, is not suitable for being applied to precision instrument and equipment；As shown in Fig. 2, Fig. 2
For the assembling schematic diagram of raster rotary coder in the prior art；Wherein, encoder covers in lathe live spindle 07, and installs
It is fixed with screw 05 in debug disk 06.The installing and dismounting of raster rotary coder is relatively difficult, once there is event in encoder
Barrier, needs all to remove all parts of lathe tail portion, time-consuming and laborious, influences the processing efficiency of equipment；Meanwhile machine industry
More iron filings, current product are bad to this safeguard procedures, and only band hairbrush removes cleaning iron filings on reading head, and effect is simultaneously
It is unobvious, it is easy to cause encoder to fail, and the degree of protection of raster rotary coder is relatively low, and this kind of encoder is anti-
Shield grade is generally IP40, is difficult to meet current application demand.
Therefore, how to avoid causing encoder to fail since encoder protection effect is undesirable, be those skilled in the art
The current technical issues that need to address of member.
Summary of the invention
The object of the present invention is to provide a kind of encoder, which be can solve since encoder protection effect is undesirable
And the problem of causing encoder to fail, which can be reached by sealing structure prevents iron filings, water and oil liquid from entering volume
Effect inside code device, plays protective action so as to the components to decoder internal.
To achieve the above object, the present invention provides a kind of encoder, including magnetic ring component, to the magnetic ring component with
The reading head assembly of preset radial gap setting and with the magnetic ring component coaxial arrangement, to protect the magnetic ring component with
The protection flange of the reading head assembly, the reading head assembly are fixedly installed in the protection flange.
Preferably, the second shell that the protection flange includes first shell and is oppositely arranged with the first shell,
The first shell is to be tightly connected with the second shell to guarantee leakproofness.
Preferably, the interface of the first shell be equipped with along perpendicular to the first shell radial direction and to inward side to
The clamping groove opened up, the interface of the second shell be equipped with along the radial direction perpendicular to the second shell and outward protrusion,
To the clamping protrusion being engaged by clamping with the clamping groove.
Preferably, it is equipped between the inner sidewall of the clamping groove and the lateral wall of the clamping protrusion to keep leakproofness
Sealant.
Preferably, the sealant is specially vulcanised rubber layer.
Preferably, the reading head assembly is installed on the protection flange by positioning tool, the positioning tool to
Ensure the preset radial gap of the reading head assembly and the magnetic ring component.
It preferably, further include with the protection flanged joint, to resist the magnetic ring component to ensure the reading head
The positioning screw of the axial spacing of component and the magnetic ring component.
Preferably, the magnetic ring component is installed on debug disk by fastening screw.
Preferably, the protection flange is fixedly installed in lathe fixing end by backing-up screw.
Relative to above-mentioned background technique, the present invention devises a kind of encoder.Since traditional magnetic coder is being read
The gap of head and magnet ring needs to adjust the position of reading head, one side observation signal, in industrialization by waist hole on one side when debugging
Cheng Zhong is unable to control the consistency of product, and magnetic coder often will appear since iron filings are stuck in the seam of reading head and magnet ring
Encoder is caused to fail in gap, raster rotary coder can only also protect the solid greater than 1mm, for consolidating less than 1mm
Body, oil, water do not have protection effect, therefore, can ensure the radial clearance of reading head and magnet ring using one kind and can protect
The reading head encoder not damaged with magnet ring is necessary.
Specifically, encoder includes magnetic ring component, reading head assembly and protection flange, wherein protection flange and magnetic
Ring assemblies coaxial arrangement, protection flange can make encoder integrally achieve the effect that anti-iron filings, Water-proof and oil-proof, so as to rise
It to the effect of protection magnetic ring component and reading head assembly, and reads head assembly and is fixedly installed in protection flange, on the one hand, phase
Installation for the reading head assembly of conventional codec can save reading head bracket, save space, while can also remove adjustment from
Read this link of head bracket；On the other hand, such set-up mode can guarantee to read head assembly and magnetic ring component with default
Radial clearance setting, that is to say, that when user assembled, it can be ensured that the fractional radial position of reading head assembly and magnetic ring component
It will not change, and easy to assembly, it is not easy to make mistakes.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the assembling schematic diagram of magnetic coder in the prior art；
Fig. 2 is the assembling schematic diagram of raster rotary coder in the prior art；
Fig. 3 is a kind of assembling schematic diagram of encoder disclosed by the embodiments of the present invention；
Fig. 4 is a kind of overall structure diagram of encoder disclosed by the embodiments of the present invention；
Fig. 5 is the main view of encoder in Fig. 4；
Fig. 6 is the cut-away section structural schematic diagram of encoder in Fig. 4；
Fig. 7 is the schematic diagram of the section structure of A-A in Fig. 6.
1- magnetic ring component, 2- protection flange, 21- first shell, 22- second shell, 3- screw assemblies, 4- positioning screw,
5- fastening screw, 6- reading head assembly, 7- backing-up screw, 8- positioning are the face of conjunction.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of encoder, which can solve since encoder protection effect is undesirable
And the problem of causing encoder to fail, which can be reached by sealing structure prevents iron filings, water and oil liquid from entering volume
Effect inside code device, plays protective action so as to the components to decoder internal.
In order to make those skilled in the art more fully understand the present invention program, with reference to the accompanying drawing and it is embodied
The present invention is described in further detail for mode.
It should be noted that be all based on specification attached for the nouns of locality such as " upper end, lower end, left side, right side " described below
Defined in figure.
Fig. 3 to Fig. 7 is please referred to, Fig. 3 is a kind of assembling schematic diagram of encoder disclosed by the embodiments of the present invention；Fig. 4 is this
A kind of overall structure diagram of encoder disclosed in inventive embodiments；Fig. 5 is the main view of encoder in Fig. 4；Fig. 6 is Fig. 4
The cut-away section structural schematic diagram of middle encoder；Fig. 7 is the schematic diagram of the section structure of A-A in Fig. 6.
Encoder provided by the embodiment of the present invention, including magnetic ring component 1, reading head assembly 6 and protection flange 2,
In, magnetic ring component 1 is sheathed in debug disk, and is fixed by fastening screw 5, and magnetic ring component 1 is coaxially set with machine tool chief axis
It sets；Protection flange 2 and magnetic ring component 1 are coaxially disposed, and the side of protection flange 2 is fixedly installed in lathe by backing-up screw 7 and consolidates
Closing on face 8, protection flange 2 can make encoder integrally achieve the effect that anti-iron filings, Water-proof and oil-proof for the positioning of fixed end, thus
It can play the role of protecting magnetic ring component 1 and read head assembly 6.
Further, reading head assembly 6 and magnetic ring component 1 are with preset radial gap setting, relative to traditional reading head
The radial clearance of component 6 and magnetic ring component 1 is needed by constantly debugging so that signal is up to standard, and encoder provided by the present invention exists
After the assembly is completed, reading head assembly 6 and the radial clearance of magnetic ring component 1 can remain unchanged.
In order to realize the above functions, it needs to read head assembly 6 to be fixedly installed in protection flange 2, and can will read
Number head assembly 6 is used as integral structure for users to use with protection flange 2, on the one hand, the reading head group relative to conventional codec
The installation of part 6 can save reading head bracket, save space, while can also remove adjustment reading this link of head bracket from；It is another
Aspect, such set-up mode can guarantee to read head assembly 6 and magnetic ring component 1 with preset radial gap setting.
That is, the protection flange 2 with reading head assembly 6 can be directly mounted at coding when user assembled
On device, it can ensure that reading head component 6 and the fractional radial position of magnetic ring component 1 will not change in this way, and easy to assembly,
It is not easy to make mistakes.
In the present embodiment, it is contemplated that the convenience that protection flange 2 is assembled and disassembled, above-mentioned protection flange 2 can be set to class shell
Body opens the coaxial flange of valve, also sets two valve structures for protection method orchid 2；Specifically, the protection flange 2 can be set to
Including first shell 21 and second shell 22, wherein first shell 21 is oppositely arranged with second shell 22, and the two is connected by sealing
The overall structure that can form protection flange 2 is connect, and protects flange 2 that there is leakproofness.
It, can be in pair of 22 the two of said first shell 21 and second shell in order to achieve the effect that flange 2 is protected to seal
It connects place's setting and hooks back sealing structure, it is specially the mating connection structure for including clamping groove and clamping protrusion which, which returns sealing structure,.
In other words, clamping groove can be set on the interface of first shell 21, the clamping groove is along perpendicular to first shell
The radial direction of body 21 and to inward side to opening up, as groove；Correspondingly, clamping can be set on the interface of second shell 22
Protrusion, the clamping protrusion is along the radial direction perpendicular to second shell 22 and raised outward, and is clamped protrusion and can extend into clamping
It completes to be engaged by clamping in slot.
For lift-off seal performance, it can also be arranged between the inner sidewall of clamping groove and the lateral wall of clamping protrusion and seal
Layer, and then the leakproofness for keeping first shell 21 to connect with second shell 22；For example, the sealant can use vulcanized rubber
Layer, vulcanized rubber refer to the rubber vulcanized, and vulcanized rubber can form stereoeffect, with higher elastic, heat-resisting
It property, tensile strength and is not easily broken, the speciality such as not readily dissolving property in organic solvent.
It, can be by positioning work when reading head assembly 6 and protection flange 2 is fixedly mounted in order to optimize above-described embodiment
The installation of reading head assembly 6 is installed into, which is installed on the predeterminated position of protection flange 2 by dismountable pin,
And a pre-set space is reserved, which is to be used to install the position of reading head assembly 6, and head assembly 6 to be read is pacified
After the completion of dress, positioning tool is removed.
Such set-up mode may insure the preset radial gap of reading head assembly 6 and magnetic ring component 1, it can ensure
Reading head assembly 6 and the fractional radial position of magnetic ring component 1 will not change, and reach reading head assembly 6 and protection flange 2
The purpose of consistency is installed no longer to dismantle, can be used as integral structure makes after reading head assembly 6 and protection flange 2 are installed
With.
In addition, when flange 2 is protected in design, it is desirable that protection flange 2 is fit structure with user terminal, may insure to pacify in this way
Magnetic ring component 1 and the positional relationship of reading head assembly 6 will not change after dress.
On the basis of the above, encoder is additionally provided with positioning screw 4, and positioning screw 4 is screwed on protection flange 2, and this is fixed
The bottom of position screw 4 should be withstood in magnetic ring component 1, so as to ensure reading head group during assembling positioning screw 4
The relative axial position relationship of part 6 and magnetic ring component 1.
In the assembling process of encoder, magnet ring is mounted in debug disk first, and fixed with fastening screw 5；Pacifying
When dress protection flange 2, the installation site of protection flange 2 is determined by positioning screw 4, then tightens the anti-of protection 2 side of flange
Loose screw 7, so that protection flange 2 is fixed in the positioning of lathe conjunction face 8；Finally, unloading positioning screw 4, can prevent
The screw assemblies 3 that oil liquid, water enter inside protection flange 2 are set up, and assembly can be completed.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
Encoder provided by the present invention is described in detail above.Specific case used herein is to the present invention
Principle and embodiment be expounded, method and its core of the invention that the above embodiments are only used to help understand
Thought is thought.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
Claims (9)
1. a kind of encoder, which is characterized in that including magnetic ring component (1), to the magnetic ring component (1) between preset radial
Gap setting reading head assembly (6) and with the magnetic ring component (1) coaxial arrangement, to protect the magnetic ring component (1) with
The protection flange (2) of reading head assembly (6), the reading head assembly (6) are fixedly installed in the protection flange (2).
2. encoder according to claim 1, which is characterized in that the protection flange (2) include first shell (21) with
And the second shell (22) being oppositely arranged with the first shell (21), the first shell (21) to the second shell
(22) it is tightly connected to guarantee leakproofness.
3. encoder according to claim 2, which is characterized in that the interface of the first shell (21) is equipped with along vertical
In the first shell (21) radial direction and to inward side to the clamping groove opened up, the interface of the second shell (22) is equipped with
Along the radial direction perpendicular to the second shell (22) and protrusion, the clamping to be engaged by clamping with the clamping groove outward is convex
It rises.
4. encoder according to claim 3, which is characterized in that the inner sidewall of the clamping groove and the clamping protrusion
The sealant to keep leakproofness is equipped between lateral wall.
5. encoder according to claim 4, which is characterized in that the sealant is specially vulcanised rubber layer.
6. encoder according to any one of claims 1 to 5, which is characterized in that the reading head assembly (6) passes through positioning
Tooling is installed on the protection flange (2), and the positioning tool is to ensure the reading head assembly (6) and the magnetic ring component
(1) preset radial gap.
7. encoder according to claim 6, which is characterized in that further include connecting, with the protection flange (2) to support
Magnetic ring component (1) is stated to ensure the positioning screw of the axial spacing of reading head assembly (6) and the magnetic ring component (1) in residence
(4)。
8. encoder according to claim 7, which is characterized in that the magnetic ring component (1) is installed by fastening screw (5)
In debug disk.
9. encoder according to claim 8, which is characterized in that the protection flange (2) is fixed by backing-up screw (7)
It is installed on lathe fixing end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004811.1A CN109483327B (en) | 2019-01-03 | 2019-01-03 | Encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004811.1A CN109483327B (en) | 2019-01-03 | 2019-01-03 | Encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109483327A true CN109483327A (en) | 2019-03-19 |
| CN109483327B CN109483327B (en) | 2021-03-09 |
Family
ID=65713937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910004811.1A Active CN109483327B (en) | 2019-01-03 | 2019-01-03 | Encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109483327B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004354299A (en) * | 2003-05-30 | 2004-12-16 | Ntn Corp | Bearing device with built-in rotating speed sensor |
| CN101271004A (en) * | 2007-03-20 | 2008-09-24 | 大隈株式会社 | Absolute encoder |
| WO2009031607A1 (en) * | 2007-09-06 | 2009-03-12 | Ntn Corporation | Sensor unit |
| DE102007043480A1 (en) * | 2007-09-12 | 2009-03-19 | Valeo Schalter Und Sensoren Gmbh | Rotation angle optically or magnetically detecting arrangement for motor vehicle, has Hall switches arranged corresponding to circumference of component, where distribution of polarity reverse change is designed on circumference |
| CN201529775U (en) * | 2009-10-17 | 2010-07-21 | 宝鸡八阵精密机械有限公司 | Miniature precision knife arranging CNC machine |
| CN201917351U (en) * | 2010-12-15 | 2011-08-03 | 天津埃柯特阀门控制设备有限公司 | Multi-turn absolute position detector |
| CN203490704U (en) * | 2013-08-10 | 2014-03-19 | 长春禹衡光学有限公司 | Installing and positioning structure of magnetic encoder reading head |
| CN105319385A (en) * | 2014-06-04 | 2016-02-10 | 中西金属工业株式会社 | Magnetic encoder and manufacturing method thereof |
| CN105371881A (en) * | 2015-11-22 | 2016-03-02 | 长春禹衡光学有限公司 | Integrally-installed split encoder |
| CN206542054U (en) * | 2017-01-22 | 2017-10-03 | 苏州元谋智能机器人系统有限公司 | A kind of conducting slip ring for measuring absolute rotation angle |
-
2019
- 2019-01-03 CN CN201910004811.1A patent/CN109483327B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004354299A (en) * | 2003-05-30 | 2004-12-16 | Ntn Corp | Bearing device with built-in rotating speed sensor |
| CN101271004A (en) * | 2007-03-20 | 2008-09-24 | 大隈株式会社 | Absolute encoder |
| WO2009031607A1 (en) * | 2007-09-06 | 2009-03-12 | Ntn Corporation | Sensor unit |
| DE102007043480A1 (en) * | 2007-09-12 | 2009-03-19 | Valeo Schalter Und Sensoren Gmbh | Rotation angle optically or magnetically detecting arrangement for motor vehicle, has Hall switches arranged corresponding to circumference of component, where distribution of polarity reverse change is designed on circumference |
| CN201529775U (en) * | 2009-10-17 | 2010-07-21 | 宝鸡八阵精密机械有限公司 | Miniature precision knife arranging CNC machine |
| CN201917351U (en) * | 2010-12-15 | 2011-08-03 | 天津埃柯特阀门控制设备有限公司 | Multi-turn absolute position detector |
| CN203490704U (en) * | 2013-08-10 | 2014-03-19 | 长春禹衡光学有限公司 | Installing and positioning structure of magnetic encoder reading head |
| CN105319385A (en) * | 2014-06-04 | 2016-02-10 | 中西金属工业株式会社 | Magnetic encoder and manufacturing method thereof |
| CN105371881A (en) * | 2015-11-22 | 2016-03-02 | 长春禹衡光学有限公司 | Integrally-installed split encoder |
| CN206542054U (en) * | 2017-01-22 | 2017-10-03 | 苏州元谋智能机器人系统有限公司 | A kind of conducting slip ring for measuring absolute rotation angle |
Non-Patent Citations (1)
| Title |
|---|
| 钟名湖 等: "《电子产品结构工艺》", 31 July 2004, 第154-155页 * |
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| Publication number | Publication date |
|---|---|
| CN109483327B (en) | 2021-03-09 |
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