CN115395743A - Method for processing brushless motor and intermediate body for brushless motor - Google Patents
Method for processing brushless motor and intermediate body for brushless motor Download PDFInfo
- Publication number
- CN115395743A CN115395743A CN202211119628.4A CN202211119628A CN115395743A CN 115395743 A CN115395743 A CN 115395743A CN 202211119628 A CN202211119628 A CN 202211119628A CN 115395743 A CN115395743 A CN 115395743A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- processing
- brushless motor
- magnetic cores
- motor
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a processing method of a brushless motor and an intermediate body for the brushless motor, wherein the processing method comprises the following steps: providing a main shaft; two magnetic cores are sleeved and fixed on the main shaft at intervals, and the combination of the main shaft and the two magnetic cores is symmetrical about the middle radial section of the main shaft; assembling the middle part of the main shaft to a supporting position of a processing device; and driving the main shaft to rotate and utilizing the processing equipment to process the concentricity of the outer peripheral surfaces of the two rotating magnetic cores. The invention is beneficial to inhibiting the problem of low processing precision caused by the self weight and the centrifugal force of the combined body, and is further beneficial to improving the processing precision of the concentricity of the outer peripheral surface of the magnetic core.
Description
Technical Field
The invention relates to the technical field of brushless motors, in particular to a processing method of a brushless motor and an intermediate for the brushless motor.
Background
A brushless motor comprises a motor rotating shaft and a magnetic core sleeved and fixed on the motor rotating shaft. In order to ensure the performance of the brushless motor, it is necessary to keep the outer peripheral surface of the magnetic core as high as possible concentric with the motor shaft, and a common processing method is to fix the magnetic core to the motor shaft by fitting, and then finish the outer peripheral surface of the magnetic core with respect to the motor shaft so as to keep the outer peripheral surface of the magnetic core highly concentric with the motor shaft. Specifically, there are two main processing methods:
1. two ends of the motor rotating shaft are respectively assembled at two supporting positions of the processing equipment, then the motor rotating shaft can be driven to rotate, and the processing equipment is utilized to carry out concentricity processing on the magnetic core on the motor rotating shaft. However, the processing method has the problem of high equipment price, and because both ends of the rotating shaft of the motor need to be assembled at corresponding supporting positions, repeated correction is needed to ensure the balance degree, so that the efficiency is low, and the cost is high.
2. Only assemble the one end of motor shaft in the support position of processing equipment, then can drive motor shaft and rotate and utilize processing equipment to carry out concentricity processing to the last magnetic core of motor shaft. Although this processing method does not require repeated correction of the degree of balance and can use relatively inexpensive equipment with respect to the processing method in which both ends are assembled in the support positions, the problem of poor balance exists because only one end of the motor shaft is assembled in the support position of the processing equipment in this processing method, and when the motor shaft is driven to rotate, the problem of low processing accuracy due to the self-weight of the motor shaft and the magnetic core and the centrifugal force cannot be overcome because only one end of the motor shaft is fixed in the support position, and it is difficult to ensure high concentricity processing accuracy, particularly in the case where the reference length by which the motor shaft can be fixed in the support position is limited.
Disclosure of Invention
The present invention is directed to a method for manufacturing a brushless motor, which is advantageous for solving at least one of the problems of the related art.
Another object of the present invention is to provide an intermediate body for a brushless motor, which is advantageous for solving at least one of the technical problems of the background art.
In order to achieve the above object, the present invention discloses a method for processing a brushless motor, comprising:
providing a main shaft;
two magnetic cores are fixedly sleeved on the main shaft at intervals, and a combined body of the main shaft and the two magnetic cores is symmetrical about the middle radial section of the main shaft;
assembling the middle part of the main shaft to a supporting position of a processing device;
and driving the main shaft to rotate and utilizing the processing equipment to process the concentricity of the outer peripheral surfaces of the two rotating magnetic cores.
According to the processing method of the brushless motor, when the magnetic core is fixed on the spindle to carry out the concentricity processing of the peripheral surface, only the middle part of the spindle is required to be assembled at the supporting position of the processing equipment, only one installation reference is required, and further the balance degree is ensured without carrying out the correction, so that the processing efficiency is improved, and the processing cost is reduced. In addition, as the combination body of the main shaft and the two magnetic cores is symmetrical about the middle radial section of the main shaft, when the middle part of the main shaft is assembled to the supporting position of the processing equipment, the parts of the combination body, which are positioned at the two sides of the middle part of the main shaft, have better balance, and compared with the prior art which only has one installation reference, the invention is beneficial to leading the main shaft to have a longer assembly reference surface, and when the main shaft rotates at the supporting position, the invention is beneficial to inhibiting the problem of low processing precision caused by the self weight and the centrifugal force of the combination body, thereby being beneficial to improving the concentricity processing precision of the peripheral surface of the magnetic core.
Optionally, the processing apparatus performs concentricity processing on the outer peripheral surfaces of the two magnetic cores by grinding.
Optionally, after the concentricity processing is performed on the outer peripheral surfaces of the two magnetic cores, the processing method further includes:
and cutting the spindle to divide the spindle into two motor components, wherein each motor component comprises a motor rotating shaft and a magnetic core.
In order to achieve the above object, the present invention discloses an intermediate body for a brushless motor, comprising:
a main shaft;
the two magnetic cores are sleeved and fixed on the main shaft at intervals;
the intermediate body is symmetrical about a mid-radial section of the main axis.
When the concentricity processing of the outer peripheral surface of the magnetic core is carried out, the middle part of the main shaft is assembled at the supporting position of the processing equipment, so that the intermediate body can be directly processed. Because only one installation reference is needed, the balance degree is ensured without performing inverse correction, the processing efficiency is favorably improved, and the processing cost is reduced. In addition, as the intermediate body is symmetrical about the middle radial section of the main shaft, when the middle part of the main shaft is assembled to the supporting position of the processing equipment, the parts of the intermediate body, which are positioned at the two sides of the middle part of the main shaft, have better balance, and compared with the prior art which only has one mounting reference, the invention is beneficial to enabling the main shaft to have a longer assembly reference surface, and when the main shaft rotates at the supporting position, the invention is beneficial to inhibiting the problem of low processing precision caused by the self weight and the centrifugal force of a combined body, thereby being beneficial to improving the processing precision of the concentricity of the outer peripheral surface of the magnetic core.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a brushless motor according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a combination of a spindle and two magnetic cores according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a combination of a spindle and two magnetic cores cut to form two motor assemblies according to an embodiment of the present invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 3, an embodiment of the invention discloses a method for processing a brushless motor, including:
101. a spindle 1 is provided.
In particular, the length of the spindle 1 can be chosen to be equal to the sum of the lengths of two motor shafts 5 of the same specification, i.e. to be equal to twice the length of a normal motor shaft 5. Of course, without being limited thereto, the length of the spindle 1 may be more than twice the length of the normal motor shaft 5, as required.
102. Two magnetic cores 2 are sleeved and fixed on the main shaft 1 at intervals, and the combination of the main shaft 1 and the two magnetic cores 2 is symmetrical about a middle radial section 11 of the main shaft 1. After the brushless motor is processed, the magnetic core 2 is used as an inner rotor of the brushless motor.
Since the two magnetic cores 2 are fixed on the main shaft 1 and the combination of the main shaft 1 and the two magnetic cores 2 is symmetrical with respect to the middle radial section 11 of the main shaft 1, two independent motor assemblies can be formed by cutting the main shaft 1 in the subsequent process.
Specifically, the magnetic core 2 sleeved on the spindle 1 is already roughly processed, and the outer peripheral surface of the magnetic core 2 is mainly finely processed after being sleeved on the spindle 1, so that the outer peripheral surface of the magnetic core 2 meets the concentricity requirement of the rotating shaft. Of course, it is not limited thereto.
103. The middle part of the spindle 1 is fitted to a support position of the machining apparatus.
Because the combination of the spindle 1 and the two magnetic cores 2 is symmetrical about the middle radial section 11 of the spindle 1 (namely, the radial section at the most middle position of the spindle 1), when the middle part of the spindle 1 (the middle radial section 11 is located at the middle position of the middle part of the spindle 1) is assembled to a supporting position of a processing device, the parts of the combination located at the two sides of the middle part of the spindle 1 have better balance, compared with the prior art, the invention is beneficial to enabling the middle part of the spindle 1 assembled to the supporting position to have larger length (to have a longer assembling reference surface), and further beneficial to inhibiting the problem of inconsistent centrifugal force caused by the self weight of the combination when the spindle 1 rotates at the supporting position. In addition, the size of the area occupied by the "middle part of the spindle 1" can be set according to actual conditions, and it is understood that the "middle part of the spindle 1" is located between the two magnetic cores 2 and is normally spaced from the two magnetic cores 2.
It should be noted that the sequence of operations 102 and 103 is not limited in the present invention, and it cannot be excluded that the middle portion of the main shaft 1 is first assembled to the supporting position of the processing equipment, and then the two magnetic cores 2 are fixed on the main shaft 1 in a sleeved manner.
In particular, the support location is defined by three bearings, and the middle part of the main shaft 1 is assembled among the three bearings, and the main shaft 1 is driven to rotate by the middle part of the main shaft 1 assembled in the support location.
104. The main shaft 1 is driven to rotate, and the outer peripheral surfaces of the two rotating magnetic cores 2 are processed with concentricity by processing equipment, so that the outer peripheral surfaces of the magnetic cores 2 meet the requirement of concentricity with the main shaft 1.
Alternatively, the processing apparatus performs the concentricity processing on the outer peripheral surfaces of the two magnetic cores 2 by grinding.
Specifically, the machining apparatus may machine the outer peripheral surface of the magnetic core 2 with a rotating grinding tool.
As an alternative embodiment, the outer circumferential surfaces of the two cores 2 may be simultaneously processed concentrically. Further, the outer peripheral surfaces of the two cores 2 may be processed in a synchronous symmetry manner, that is, the synchronous processed regions may be substantially symmetric regions.
Of course, the present invention is not limited to the simultaneous concentricity processing of the outer peripheral surfaces of the two cores 2.
After the outer peripheral surfaces of the two magnetic cores 2 are processed in a concentricity mode, the processing method further comprises the following steps:
the spindle 1 is cut to be divided into two motor assemblies each including a motor shaft 5 and a magnetic core 2, respectively.
It should be noted that the cutting of the spindle 1 to divide the spindle into two motor assemblies is not limited to only being performed after the concentricity processing of the outer peripheral surface of the magnetic core 2 is completed, and it is not excluded that other processing is performed before that, and even other parts are assembled on the combination of the spindle 1 and the two magnetic cores 2.
According to the processing method of the brushless motor, when the magnetic core 2 is fixed on the main shaft 1 for processing the concentricity of the outer peripheral surface, only the middle part of the main shaft 1 is required to be assembled at the supporting position of the processing equipment, only one installation reference is required, and further the balance degree is ensured without performing the correction, so that the processing efficiency is improved, the processing cost is reduced, and the requirement on the equipment is reduced. In addition, as the combination of the main shaft 1 and the two magnetic cores 2 is symmetrical about the middle radial section 11 of the main shaft 1, when the middle part of the main shaft 1 is assembled to a supporting position of a processing device, the parts of the combination positioned at two sides of the middle part of the main shaft 1 have better balance, and compared with the prior art with only one installation reference, the invention is beneficial to enabling the main shaft 1 to have a longer assembly reference surface, and when the main shaft 1 rotates at the supporting position, the invention is beneficial to inhibiting the problem of low processing precision caused by the self weight and centrifugal force of the combination, thereby being beneficial to improving the concentricity processing precision of the outer peripheral surface of the magnetic core 2.
Referring to fig. 2 and 3, the present invention further discloses an intermediate body for a brushless motor, including a spindle 1 and two magnetic cores 2, wherein the two magnetic cores 2 are sleeved and fixed on the spindle 1 at intervals, and the intermediate body is symmetrical about a middle radial section 11 of the spindle 1.
Because two magnetic cores 2 are fixed on the main shaft 1 and the intermediate body is symmetrical about the middle radial section 11 of the main shaft 1, two independent motor assemblies can be formed by cutting the main shaft 1 subsequently, and each motor assembly comprises a motor rotating shaft 5 and a magnetic core 2.
Specifically, after the brushless motor is processed, the magnetic core 2 is used as an inner rotor of the brushless motor.
In particular, the length of the spindle 1 can be chosen to be equal to the sum of the lengths of two motor shafts 5 of the same specification, i.e. to be equal to twice the length of a normal motor shaft 5. Of course, without being limited thereto, the length of the spindle 1 may be more than twice the length of the normal motor shaft 5.
When the concentricity processing of the outer peripheral surface of the magnetic core 2 is carried out, the middle part of the main shaft 1 is assembled at the supporting position of the processing equipment, so that the intermediate body can be directly processed. Because only one installation reference is needed, the balance degree is ensured without performing inverse correction, and the processing efficiency is favorably improved, the processing cost is reduced, and the requirement on equipment is reduced. In addition, because the intermediate body is symmetrical about the middle radial section 11 of the main shaft 1, when the middle part of the main shaft 1 is assembled to the supporting position of the processing equipment, the parts of the intermediate body, which are positioned at the two sides of the middle part of the main shaft 1, have better balance, and compared with the prior art which only has one installation reference, the invention is beneficial to enabling the main shaft 1 to have a longer assembly reference surface, and when the main shaft 1 rotates at the supporting position, the invention is beneficial to inhibiting the problem of low processing precision caused by the self weight of a combined body and centrifugal force, thereby being beneficial to improving the concentricity processing precision of the outer peripheral surface of the magnetic core 2.
The above disclosure is only for the preferred embodiment of the present invention, and it should be understood that the present invention is not limited thereto, and the invention is not limited to the above disclosure.
Claims (4)
1. A method for processing a brushless motor, comprising:
providing a main shaft;
two magnetic cores are fixedly sleeved on the main shaft at intervals, and a combined body of the main shaft and the two magnetic cores is symmetrical about the middle radial section of the main shaft;
assembling the middle part of the main shaft to a supporting position of processing equipment;
and driving the main shaft to rotate and utilizing the processing equipment to process the concentricity of the outer peripheral surfaces of the two rotating magnetic cores.
2. The method of manufacturing a brushless motor according to claim 1,
the processing equipment processes the outer peripheral surfaces of the two magnetic cores in a grinding mode.
3. The method of processing a brushless motor according to claim 1, wherein after the concentricity processing is performed on the outer peripheral surfaces of the two cores, the method further comprises:
and cutting the spindle to divide the spindle into two motor components, wherein each motor component comprises a motor rotating shaft and a magnetic core.
4. An intermediate body for a brushless motor, comprising:
a main shaft;
the two magnetic cores are sleeved and fixed on the main shaft at intervals;
the intermediate body is symmetrical about a mid-radial section of the main axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119628.4A CN115395743A (en) | 2022-09-14 | 2022-09-14 | Method for processing brushless motor and intermediate body for brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119628.4A CN115395743A (en) | 2022-09-14 | 2022-09-14 | Method for processing brushless motor and intermediate body for brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115395743A true CN115395743A (en) | 2022-11-25 |
Family
ID=84125914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211119628.4A Pending CN115395743A (en) | 2022-09-14 | 2022-09-14 | Method for processing brushless motor and intermediate body for brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115395743A (en) |
-
2022
- 2022-09-14 CN CN202211119628.4A patent/CN115395743A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2598107B2 (en) | Motor bearing structure | |
| JP2005324322A (en) | Machine tool for machining ring-like workpiece | |
| EP0166790A1 (en) | Alternating current servo motor and method of manufacturing the same | |
| EP3217515A1 (en) | Rotor, electric machine and associated method | |
| CN115395743A (en) | Method for processing brushless motor and intermediate body for brushless motor | |
| WO2019088156A1 (en) | Rotor and motor | |
| JPH0946983A (en) | Method for finishing frame of motor, and motor to be finished by the method | |
| AU2017405739A1 (en) | Brushless motor | |
| CN209867377U (en) | Rotating main shaft structure for winding machine | |
| US20010033705A1 (en) | Motor with compound bearing for OA device | |
| CN110238671B (en) | Groove machining clamp and groove machining method | |
| CN205765144U (en) | High precision elastic collet chuck fixing device | |
| JP2007151275A (en) | Stepping motor | |
| JP2002171713A (en) | Spindle motor and manufacturing method for the motor | |
| CN111864934B (en) | Rotor for an electric machine and method for producing such a rotor | |
| EP3635847A1 (en) | Machining spindles with ac induction motors and shafts for such spindles | |
| US20060152094A1 (en) | Rotor for micro-servomotor, and micro-servomotor equipped with said rotor | |
| KR20230155846A (en) | Motor housing cover processing method | |
| WO2022124073A1 (en) | Direct drive motor | |
| JP2767542B2 (en) | Processing method of rotor shaft with lead screw | |
| CN107877265A (en) | A kind of Intelligent Composite lathe with modularity external member | |
| JP3688906B2 (en) | Spindle motor hub machining method | |
| CN111014826A (en) | Motor base machining method | |
| JP3688908B2 (en) | Spindle motor hub machining method | |
| JP3688907B2 (en) | Spindle motor hub machining method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |