CN213879570U - High-precision encoder magnetic steel mounting structure - Google Patents
High-precision encoder magnetic steel mounting structure Download PDFInfo
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- CN213879570U CN213879570U CN202022056267.6U CN202022056267U CN213879570U CN 213879570 U CN213879570 U CN 213879570U CN 202022056267 U CN202022056267 U CN 202022056267U CN 213879570 U CN213879570 U CN 213879570U
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Abstract
The utility model provides an encoder magnet steel mounting structure of high accuracy, include: the motor body, the encoder magnet steel, magnetic encoder circuit board subassembly, encoder magnet steel fixing device, the encoder magnet steel is installed on encoder magnet steel fixing device, encoder magnet steel fixing device demountable installation is in the pivot of motor body, encoder magnet steel fixing device is located the tip of pivot, be equipped with the response chip on the magnetic encoder circuit board subassembly, through the interval between regulation encoder magnet steel fixing device control encoder magnet steel top surface and the response chip. The utility model discloses set up encoder magnet steel fixing device, fix the encoder magnet steel on encoder magnet steel fixing device, encoder magnet steel fixing device detachable installs in the pivot, and the position that is convenient for adjust the encoder magnet steel simultaneously of the installation of the fixed encoder magnet steel of installer satisfies the tolerance requirement.
Description
Technical Field
The utility model relates to an encoder field especially relates to an encoder magnet steel mounting structure of high accuracy.
Background
Common magnetic encoder mounting structure is shown in fig. 1, and the hole is dug in the pivot, and the encoder magnet steel dress is downthehole at the pivot, and the shaft hole adds the gluey loose rubber cooperation with the magnet steel external diameter, and encoder circuit board subassembly is fixed outside from encoder magnet steel top surface certain distance through other devices.
Under general conditions, encoder circuit board mounted position is relatively fixed, and the signal of encoder output all can be influenced to the distance size between encoder magnet steel top surface and the response chip top surface, and then influences its use accuracy. Thus, the strictly required distance is transferred to the out-of-shaft tolerance of the rotating shaft; at present, in normal production, the length of a rotating shaft, the depth of a drilled hole, the assembly of the whole machine and the like have tolerances, wherein a single tolerance is more than +/-0.1 mm, and after the factors are combined, the output shaft tolerance of a motor cannot guarantee the strict requirement of +/-0.1 mm.
The structure has the problems that 1, in the conventional motor structure, the required dimensional tolerance of +/-0.1 mm cannot be guaranteed after the output shaft is bonded with the encoder magnetic steel; 2 once the magnetic field of the motor enters the rotating shaft, the magnetic field of the motor can influence the magnetic field generated by the magnetic steel of the encoder, so that the precision of the output signal of the magnetic encoder is influenced, and the control precision is reduced; 3. in order to normally use the magnetic encoder, the position of the circuit board can only be adjusted, the distance between the chip and the top surface of the magnetic steel is adjusted according to the output signal, each motor needs to be debugged and confirmed repeatedly, the production efficiency is low, and the labor cost is high.
Disclosure of Invention
To the problem in the background art, the utility model provides an encoder magnet steel mounting structure of high accuracy, include: motor body, encoder magnet steel, magnetic encoder circuit board subassembly, its characterized in that still includes: encoder magnet steel fixing device, the encoder magnet steel is installed on the encoder magnet steel fixing device, encoder magnet steel fixing device demountable installation in the pivot of motor body, encoder magnet steel fixing device is located the tip of pivot, be equipped with the response chip on the magnetic encoder circuit board subassembly, through adjusting encoder magnet steel fixing device control encoder magnet steel top surface with interval between the response chip.
Further, the encoder magnetic steel fixing device comprises: the magnetic steel sleeve is coaxially connected with the rotating shaft connecting sleeve, the encoder magnetic steel is installed in the magnetic steel sleeve, the rotating shaft connecting sleeve is installed at the end part of the rotating shaft, the rotating shaft connecting sleeve is of a circular ring barreled structure, and the inner diameter of the rotating shaft connecting sleeve is matched with the rotating shaft.
Further, the magnetic steel sleeve includes: the rotary shaft connecting sleeve is installed below the bottom plate, and the rotary shaft connecting sleeve is communicated with the magnetic steel sleeve through the connecting holes.
Furthermore, a circular annular tool withdrawal groove is formed in the bottom plate, is located on the upper surface of the bottom plate and is distributed along the inner wall of the circular side plate, glue liquid can be stored in the tool withdrawal groove, and the top surface of the encoder magnetic steel is guaranteed to be flat and not inclined.
Furthermore, a plurality of circular groove lines are formed in the inner wall of the rotating shaft connecting sleeve, and glue solution can be stored in the circular groove lines so as to guarantee the bonding strength of the rotating shaft connecting sleeve and the rotating shaft.
Furthermore, the circular ring side plate, the bottom plate and the rotating shaft connecting sleeve are integrally formed.
Furthermore, the circular ring side plate, the bottom plate and the rotating shaft connecting sleeve are all made of aluminum materials, so that the magnetic gathering effect is good, and the interference of a motor magnetic field is shielded.
Furthermore, the rotating shaft is provided with a flat wire, and the flat wire is positioned at the end part of the rotating shaft, so that exhaust is facilitated during assembly, and accurate positioning is facilitated.
Compared with the prior art, the utility model provides an encoder magnet steel mounting structure of high accuracy has following beneficial effect:
the utility model discloses set up encoder magnet steel fixing device, fix the encoder magnet steel on encoder magnet steel fixing device, encoder magnet steel fixing device detachable installs in the pivot, and the position that is convenient for adjust the encoder magnet steel simultaneously of the installation of the fixed encoder magnet steel of installer satisfies the tolerance requirement.
Drawings
Fig. 1 shows a magnetic steel mounting structure of a conventional encoder.
Fig. 2 is a schematic cross-sectional structure diagram of a high-precision encoder magnetic steel mounting structure.
Fig. 3 is a schematic perspective view of a motor body of a high-precision encoder magnetic steel mounting structure.
Fig. 4 is a sectional view of an encoder magnetic steel fixing device of an encoder magnetic steel mounting structure with high accuracy.
Wherein: 1-a motor body; 11-a rotating shaft; 111-flat filament; 2-encoder magnetic steel; 3-a magnetic encoder circuit board assembly; 4-encoder magnetic steel fixing device; 41-magnetic steel sleeve; 411-circular side plate; 412-a backplane; 413-connection hole; 414-tool withdrawal groove; 42-a rotating shaft connecting sleeve; 421-circular groove.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person having ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, and in order to describe the embodiments of the present invention in detail, the cross-sectional view showing the structure of the device will not be enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted, connected and connected" in the present application are to be understood broadly, unless otherwise explicitly stated or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1-4, the utility model provides a high accuracy encoder magnet steel mounting structure, include: motor body 1, encoder magnet steel 2, magnetic encoder circuit board components 3, its characterized in that still includes: encoder magnet steel fixing device 4, encoder magnet steel fixing device 4 includes: magnetic steel sleeve 41, pivot adapter sleeve 42, magnetic steel sleeve 41 with pivot adapter sleeve 42 is coaxial to be linked to each other, encoder magnet steel 2 is installed in magnetic steel sleeve 41, pivot adapter sleeve 42 is installed the tip of pivot 11, pivot adapter sleeve 42 is ring barreled structure, the internal diameter of pivot adapter sleeve 42 with pivot 11 matches, magnetic steel sleeve 41 includes: ring curb plate 411, bottom plate 412, ring curb plate 411 is ring barreled structure, bottom plate 412 is installed ring curb plate 411's bottom, the annular tool withdrawal groove 414 of circle has been seted up on bottom plate 412, the tool withdrawal groove 414 is located the upper surface of bottom plate 412 and the tool withdrawal groove 414 along ring curb plate 411's inner wall distributes, can store the glue solution in the tool withdrawal groove 414, connecting hole 413 has been seted up on bottom plate 412, pivot adapter sleeve 42 is installed bottom plate 412 below, many ring flute 421 have been seted up on pivot adapter sleeve 42's the inner wall, can store the glue solution in the ring flute 421 to guarantee pivot adapter sleeve 42 and pivot 11's joint strength, pivot adapter sleeve 42 with communicate through connecting hole 413 between the magnetic steel sleeve 41, be equipped with the response chip on the magnetic encoder circuit board subassembly 3, through adjusting encoder magnet steel fixing device 4 control encoder magnet steel 2 top surface with between the response chip Distance.
The circular ring side plate 411, the bottom plate 412 and the rotating shaft connecting sleeve 42 are integrally formed, and the circular ring side plate 411, the bottom plate 412 and the rotating shaft connecting sleeve 42 are all made of aluminum materials, so that the magnetic gathering effect is good, and the interference of a motor magnetic field is shielded.
The rotating shaft is provided with a flat wire 111, and the flat wire 111 is located at the end of the rotating shaft 11, so that exhaust is facilitated during assembly, and accurate positioning is facilitated.
The utility model provides a high accuracy encoder magnet steel mounting structure assembles according to following step:
and pouring glue solution into the tool withdrawal groove 414, putting the encoder magnetic steel 2 into the magnetic steel sleeve 41 for bonding and fixing, pressing the rotating shaft connecting sleeve 42 onto the rotating shaft 11 through an assembling tool after the glue solution is solidified, wherein the press-fitting distance is ensured by the assembling tool, and the press-fitting distance can be completely controlled within +/-0.1 mm, even +/-0.05 mm.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (8)
1. A high-precision encoder magnetic steel mounting structure comprises: motor body, encoder magnet steel, magnetic encoder circuit board subassembly, its characterized in that still includes: encoder magnet steel fixing device, the encoder magnet steel is installed on the encoder magnet steel fixing device, encoder magnet steel fixing device demountable installation in the pivot of motor body, encoder magnet steel fixing device is located the tip of pivot, be equipped with the response chip on the magnetic encoder circuit board subassembly, through adjusting encoder magnet steel fixing device control encoder magnet steel top surface with interval between the response chip.
2. The high-precision encoder magnetic steel mounting structure according to claim 1, wherein the encoder magnetic steel fixing device comprises: the magnetic steel sleeve is coaxially connected with the rotating shaft connecting sleeve, the encoder magnetic steel is installed in the magnetic steel sleeve, the rotating shaft connecting sleeve is installed at the end part of the rotating shaft, the rotating shaft connecting sleeve is of a circular ring barreled structure, and the inner diameter of the rotating shaft connecting sleeve is matched with the rotating shaft.
3. The high-precision magnetic steel mounting structure for the encoder is characterized in that the magnetic steel sleeve comprises: the rotary shaft connecting sleeve is installed below the bottom plate, and the rotary shaft connecting sleeve is communicated with the magnetic steel sleeve through the connecting holes.
4. The high-precision encoder magnetic steel mounting structure according to claim 3, wherein the bottom plate is provided with a circular tool withdrawal groove, the tool withdrawal groove is located on the upper surface of the bottom plate and distributed along the inner wall of the circular side plate, glue can be stored in the tool withdrawal groove, and the top surface of the encoder magnetic steel is guaranteed to be flat and not to be inclined.
5. The high-precision encoder magnetic steel mounting structure according to claim 3, wherein the inner wall of the rotating shaft connecting sleeve is provided with a plurality of circular grooves, and glue solution can be stored in the circular grooves to ensure the bonding strength between the rotating shaft connecting sleeve and the rotating shaft.
6. The high-precision encoder magnetic steel mounting structure according to claim 3, wherein the circular ring side plate, the bottom plate and the rotating shaft connecting sleeve are integrally formed.
7. The high-precision encoder magnetic steel mounting structure according to claim 3, wherein the circular ring side plates, the bottom plate and the rotating shaft connecting sleeve are all made of aluminum materials, so that the magnetic collecting effect is good, and the interference of a motor magnetic field is shielded.
8. The high-precision encoder magnetic steel mounting structure according to claim 2, wherein the rotating shaft is provided with a flat wire, and the flat wire is located at the end of the rotating shaft, so that exhaust is facilitated during assembly, and accurate positioning is facilitated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022056267.6U CN213879570U (en) | 2020-09-18 | 2020-09-18 | High-precision encoder magnetic steel mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022056267.6U CN213879570U (en) | 2020-09-18 | 2020-09-18 | High-precision encoder magnetic steel mounting structure |
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| Publication Number | Publication Date |
|---|---|
| CN213879570U true CN213879570U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022056267.6U Active CN213879570U (en) | 2020-09-18 | 2020-09-18 | High-precision encoder magnetic steel mounting structure |
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|---|---|
| CN (1) | CN213879570U (en) |
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- 2020-09-18 CN CN202022056267.6U patent/CN213879570U/en active Active
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