CN104821679A - Motor end cover and production method thereof - Google Patents
Motor end cover and production method thereof Download PDFInfo
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- CN104821679A CN104821679A CN201510261122.0A CN201510261122A CN104821679A CN 104821679 A CN104821679 A CN 104821679A CN 201510261122 A CN201510261122 A CN 201510261122A CN 104821679 A CN104821679 A CN 104821679A
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- layer body
- electric motor
- motor end
- outer layer
- end cap
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Abstract
The invention provides a motor end cover, which comprises a main body and a bearing seat. The main body comprises a hollow cylindrical side wall and an annular top cover; the bearing seat comprises a hollow cylindrical outer layer body and a hollow cylindrical inner layer body; and the side wall, the top cover and the outer layer body are formed in an integrated stretching mode. the bearing seat of the motor end cover of the invention is separated into the outer layer body and the inner layer body, and compared with a past bearing seat which is formed in an integrated mode after stretching for multiple times and then finishing, realization of high coaxiality is more facilitated. In addition, as the number of stretching is reduced, anisotropy, cold-work hardening and stress influences of a plate are reduced, roundness of a main body inner circle of the motor end cover is improved. On the basis that coaxiality and roundness are enhanced to a certain degree, the vibration amplitude, the frequency and the noise of the motor during the operation process are restrained, an air gap between a stator and a rotor is reduced, the motor efficiency is improved, and the motor with the motor end cover can be actively and meaningfully applied to various industries.
Description
Technical field
The present invention relates to technical field of motors, particularly relate to a kind of electric motor end cap and production method thereof.
Background technology
Be applied in the micro-machine of the housed devices such as air-conditioner outdoor unit, indoor set, air purifier, high-power ventilating fan, air curtain, very important performance index are the axialities between the stator of motor and rotor, because be generally stator is fixed on the inner ring of electric motor end cap main body, rotor is fixed on motor shaft, the two ends of motor shaft are connected with electric motor end cap by the bearing being fixed on bearing pedestal, so this index depends primarily on the axiality between the bearing chamber inner ring of electric motor end cap center and main body inner ring, in the prior art, electric motor end cap utilizes diel to produce through ten multiple working procedures such as blanking punching, stretching, pressing, shapings sheet material, main body and the bearing pedestal of electric motor end cap are one-body molded, be subject to the restriction of mask error and mismachining tolerance, the main body inner ring of electric motor end cap out and the axiality of bearing chamber inner ring are at about 0.1mm, and, mould finishing is utilized to form in order to the precision improving bearing chamber needs to rely on after multi-drawing, owing to being subject to each to abnormity of sheet material, the impact of flow harden and stress, the thickness of local sheet material can be inconsistent, cause the circularity level of the main body inner ring of electric motor end cap at about 0.15mm, the poor motor Oscillation Amplitude in running that makes of axiality is large, frequency is high, produce larger noise, the main body inner ring circularity level of electric motor end cap is lower, and the air gap between stators and rotators can be made larger, therefore electric efficiency is affected, these two kinds of defects that existing electric motor end cap exists, have a strong impact on the Performance and quality level of motor, also counteracts that its utilization in the industries such as air-conditioning.
Summary of the invention
The technical problem to be solved in the present invention is: for electric motor end cap of the prior art due to through multi-drawing, cause the problem that the axiality of the main body inner ring of electric motor end cap and bearing chamber inner ring circularity that is not high and main body inner ring is not high, the invention provides a kind of electric motor end cap and production method solves the problems referred to above.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electric motor end cap, comprise main body and bearing pedestal, described main body comprises the sidewall of hollow cylindrical and the top cover of annular, described bearing pedestal comprises the outer layer body of hollow cylindrical and the internal layer body of hollow cylindrical, described sidewall, top cover and outer layer body one drawing and forming, the lower end of described sidewall is uncovered, upper end annulus is connected with the outer ring of described top cover, the upper end annulus of described outer layer body is connected with the inner ring of described top cover, the height of the upper end of described outer layer body is equal to or slightly less than the upper end level of described sidewall and described outer layer body is coaxial with described sidewall, the outer wall of described internal layer body is fixedly connected with the inwall of described outer layer body.
As preferably, between the outer wall of described internal layer body and the inwall of described outer layer body, be also provided with a layer insulating.
As preferably, also comprise the flange that axial interface is L shape, described flange circular bottom part and hollow cylindrical sidepiece, the outer ring of described circular bottom part and the lower end annulus of described hollow cylindrical sidepiece are connected as a single entity, the inner ring of described circular bottom part and the lower end annulus of described sidewall are connected as a single entity, and described hollow cylindrical sidepiece is coaxial with described sidewall.
As preferably, described top cover comprises the Part I of annular and the Part II of annular, described Part I and Part II are all perpendicular to the axis of described sidewall, the outer ring of described Part I and the upper end annulus of described sidewall are connected as a single entity, the outer ring of described Part II and the inner ring of described Part I be connected as a single entity and the height of Part II a little less than the height of described Part I, the inner ring of described Part II and the upper end annulus of described outer layer body are connected as a single entity.
As preferably, the material of described internal layer body is aluminium, engineering plastics or BMC, and the material of described insulating barrier is rubber or plastics.
As preferably, the radial thickness of described internal layer body is 2 ~ 10mm.
A production method for electric motor end cap, the first step, first carries out punching and blanking to sheet material blank, forms circular plate body; Second step, is carried out one-off drawing and is formed described sidewall and top cover, and succeeding stretch forms described outer layer body; 3rd step, the described tubing that can carry out turning is pressed in the inner ring of described outer layer body, and the outer wall of tubing and the inwall of outer layer body are closely cooperated; 4th step, utilizes holder to live outer wall or the inwall of sidewall, carries out finish turning to the inwall of tubing, finally the electric motor end cap finished product described in output along with described tubing formation internal layer body.
As preferably, in described step the three step, first on the outer wall of tubing after insulating barrier described in cuff last layer in the inner ring of the described outer layer body of press-in.
As preferably, in described step second step, also comprising the described flange of formation that stretches for three times.
As preferably, in described one-off drawing, top cover is made to form described Part I and Part II.
The invention has the beneficial effects as follows, bearing pedestal is separated into outer layer body and internal layer body by this electric motor end cap, the bearing pedestal of separate type, by improving the axiality of bearing chamber and electric motor end cap main body to the finish turning of internal layer body, is more conducive to relative to past integrated bearing pedestal after multi-drawing finishing the realization ensureing high-axiality; In addition, the each impact to abnormity, flow harden and stress reducing sheet material due to the minimizing of drawing numbers, the circularity of the main body inner ring of electric motor end cap is improved, axiality and circularity two indexs all on lifting basis to a certain extent, motor Oscillation Amplitude, frequency and noise in running is made all to receive suppression, and the air gap between stators and rotators reduces, improve electric efficiency, for the application of motor in every profession and trade with this electric motor end cap, there is positive effect.
The production method operation of this electric motor end cap is few, efficiency is high, the minimizing of drawing numbers has not only ensured the axiality of electric motor end cap main body and bearing chamber and the inner ring circularity of main body, and the thickness of sheet material blank can be effectively reduced on the basis not affecting intensity, save material materials, reduce production cost, make, by electric motor end cap should have in every profession and trade of the production of this production method, there is very strong competitiveness.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the axial cross section schematic diagram of an embodiment of electric motor end cap of the present invention.
Fig. 2 is the axial cross section schematic diagram of another embodiment of electric motor end cap of the present invention.
Fig. 3 is the axial cross section schematic diagram of another embodiment of electric motor end cap of the present invention.
In figure 1, sidewall, 2, top cover, 3, outer layer body, 4, internal layer body, 5, insulating barrier, 6, flange, 201, Part I, 202, Part II.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
As shown in Figure 1, the invention provides an a kind of embodiment of electric motor end cap, comprise main body and bearing pedestal, main body comprises the sidewall 1 of hollow cylindrical and the top cover 2 of annular, bearing pedestal comprises the outer layer body 3 of hollow cylindrical and the internal layer body 4 of hollow cylindrical, sidewall 1, top cover 2 and outer layer body 3 one drawing and forming, the lower end of sidewall 1 is uncovered, upper end annulus is connected with the outer ring of top cover 2, the upper end annulus of outer layer body 3 is connected with the inner ring of top cover 2, the height of the upper end of outer layer body 3 is slightly less than the upper end level of sidewall 1 and outer layer body 3 is coaxial with sidewall 1, the outer wall of internal layer body 4 is fixedly connected with the inwall of outer layer body 3, owing to bearing pedestal to be separated into internal layer body 4 and outer layer body 3 two parts, therefore without the need to being adjusted the axiality between bearing chamber and sidewall 1 by stretching finishing repeatedly, decontrol this restriction, by being more conducive to the finish turning of internal layer body 4 axiality improving them, and sheet material is each to abnormity, the influence degree of flow harden and stress reduces greatly, the uniformity coefficient of the local thickness of sidewall 1 improves, therefore the circularity of sidewall 1 inner ring can more be ensured, the raising of circularity can improve the intensity of sidewall 1 accordingly, when turning, the clamping of fixture oppose side wall 1 not easily causes it to be out of shape, more be conducive to the axiality guaranteeing sidewall 1 and internal layer body 4, in addition on the intensity basis not affecting electric motor end cap, the thickness of sheet material can be reduced, save materials.
The material of internal layer body 4 is aluminium, engineering plastics or BMC, aluminium, engineering plastics and BMC have some strength can ensure the material that motor runs well, and be easy to cut, convenient processing, can also adopt in addition and have some strength and other metal or the nonmetallic materials that can be used for turning; If adopt the nonmetallic materials of such as engineering plastics or BMC, effectively shaft voltage can be reduced for direct current machine, improve the useful life of bearing, and effectively can reduce the impact of supply harmonic on motor, reduce the noise of motor, can because of resonance that bad coupling produces between isolation coupling motor and miscellaneous equipment.As shown in Figure 2, the insulating barrier 5 of one deck rubber or plastic material is also provided with in another embodiment between the outer wall of internal layer body 4 and the inwall of outer layer body 3, if internal layer body 4 is metal material, insulating barrier 5 not only can isolate galvano-cautery, and the stress that can reduce between internal layer body 4 and outer layer body 3, reduce friction, reduce noise.
As shown in Figure 3, in another embodiment, sidewall 1 lower end also has the flange 6 that axial interface is L shape, flange 6 circular bottom part and hollow cylindrical sidepiece, the outer ring of circular bottom part and the lower end annulus of hollow cylindrical sidepiece are connected as a single entity, the inner ring of circular bottom part and the lower end annulus of sidewall 1 are connected as a single entity, and hollow cylindrical sidepiece is coaxial with sidewall 1, and flange 6 is integrated with sidewall 1 in stretching; Complete motor should comprise two electric motor end caps be connected, and according to different mounting means, the flange 6 of two electric motor end caps can be dug in the opposite direction, also can dig in the same direction; The existence of flange 6 greatly enhances the intensity of sidewall 1, and further ensuring the electric motor end cap when turning internal layer body 4 can not be out of shape.
Due to the open upper end of bearing pedestal, therefore need when assembling motor to add cover plate on top cover 2, top cover 2 comprises the Part I 201 of annular and the Part II 202 of annular, Part I 201 and Part II 202 are all perpendicular to the axis of sidewall 1, the outer ring of Part I 201 and the upper end annulus of sidewall 1 are connected as a single entity, the outer ring of Part II 202 and the inner ring of Part I 201 be connected as a single entity and the height of Part II 202 a little less than the height of Part I 201, the inner ring of Part II 202 and the upper end annulus of outer layer body 3 are connected as a single entity, Part II 202 is equivalent to the annular groove being arranged in Part I 201 between two parties, cover plate to drop in annular groove and is fixedly connected with Part II 202, the installation being beneficial to cover plate that is designed with of annular groove is located, the height of cover plate can not exceed the height of Part I 201, cover plate is equivalent to be embedded in annular groove, be not vulnerable to the vibration of external force or motor self and depart from top cover 2.
The radial thickness of internal layer body 4 is different according to the size of different motor and model, is 2 ~ 10mm for thickness the micro-machine being generally applied in the housed devices such as air-conditioner outdoor unit, indoor set, air purifier, high-power ventilating fan, air curtain.
This electric motor end cap proves through overtesting, compare with electric motor end cap of the prior art, within the axiality of sidewall 1 inner ring and bearing chamber inner ring can be reduced to 0.03mm from 0.1mm, within the circularity of sidewall 1 inner ring can be reduced to 0.05mm from 0.15mm, within air gap between stator and rotor is reduced to 0.2mm from 0.25mm, electric efficiency improves about 3 ~ 5%, other side, sheet metal thickness for processing reduces by more than 20%, and material cost reduces greatly.
A production method for electric motor end cap, the first step, first carries out punching and blanking to sheet material blank, forms circular plate body; Second step, carried out one-off drawing and form sidewall 1 and top cover 2, top cover 2 forms described Part I 201 and Part II 202, and succeeding stretch forms outer layer body 3, three stretchings and forms described flange 6; 3rd step, first on the outer wall of tubing, tubing is pressed in the inner ring of outer layer body 3 by cuff last layer insulating barrier 5 again, and the inwall of the outer wall of tubing and outer layer body 3 is closely cooperated; 4th step, utilizes holder to live outer wall or the inwall of sidewall 1, carries out finish turning to the inwall of tubing, finally the output electric motor end cap finished product along with tubing formation internal layer body 4.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of described term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (10)
1. an electric motor end cap, comprise main body and bearing pedestal, it is characterized in that: described main body comprises the sidewall of hollow cylindrical and the top cover of annular, described bearing pedestal comprises the outer layer body of hollow cylindrical and the internal layer body of hollow cylindrical, described sidewall, top cover and outer layer body one drawing and forming, the lower end of described sidewall is uncovered, upper end annulus is connected with the outer ring of described top cover, the upper end annulus of described outer layer body is connected with the inner ring of described top cover, the height of the upper end of described outer layer body is equal to or slightly less than the upper end level of described sidewall and described outer layer body is coaxial with described sidewall, the outer wall of described internal layer body is fixedly connected with the inwall of described outer layer body.
2. electric motor end cap as claimed in claim 1, is characterized in that: be also provided with a layer insulating between the outer wall of described internal layer body and the inwall of described outer layer body.
3. electric motor end cap as claimed in claim 1, it is characterized in that: also comprise the flange that axial interface is L shape, described flange circular bottom part and hollow cylindrical sidepiece, the outer ring of described circular bottom part and the lower end annulus of described hollow cylindrical sidepiece are connected as a single entity, the inner ring of described circular bottom part and the lower end annulus of described sidewall are connected as a single entity, and described hollow cylindrical sidepiece is coaxial with described sidewall.
4. electric motor end cap as claimed in claim 1, it is characterized in that: described top cover comprises the Part I of annular and the Part II of annular, described Part I and Part II are all perpendicular to the axis of described sidewall, the outer ring of described Part I and the upper end annulus of described sidewall are connected as a single entity, the outer ring of described Part II and the inner ring of described Part I be connected as a single entity and the height of Part II a little less than the height of described Part I, the inner ring of described Part II and the upper end annulus of described outer layer body are connected as a single entity.
5. the electric motor end cap as described in any one of Claims 1 to 4, is characterized in that: the material of described internal layer body is aluminium, engineering plastics or BMC, and the material of described insulating barrier is rubber or plastics.
6. electric motor end cap as claimed in claim 5, is characterized in that: the radial thickness of described internal layer body is 2 ~ 10mm.
7. a production method for the electric motor end cap as described in any one of claim 1 ~ 6, is characterized in that: the first step, first carries out punching and blanking to sheet material blank, forms circular plate body; Second step, is carried out one-off drawing and is formed described sidewall and top cover, and succeeding stretch forms described outer layer body; 3rd step, the described tubing that can carry out turning is pressed in the inner ring of described outer layer body, and the outer wall of tubing and the inwall of outer layer body are closely cooperated; 4th step, utilizes holder to live outer wall or the inwall of sidewall, carries out finish turning to the inwall of tubing, finally the electric motor end cap finished product described in output along with described tubing formation internal layer body.
8. the production method of electric motor end cap as claimed in claim 7, is characterized in that: in described step the three step, first on the outer wall of tubing after insulating barrier described in cuff last layer in the inner ring of the described outer layer body of press-in.
9. the production method of electric motor end cap as claimed in claim 8, is characterized in that: also comprising in described step second step stretches for three times forms described flange.
10. the production method of electric motor end cap as claimed in claim 9, is characterized in that: in described one-off drawing, makes top cover form described Part I and Part II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510261122.0A CN104821679B (en) | 2015-05-20 | 2015-05-20 | Electric motor end cap and its production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510261122.0A CN104821679B (en) | 2015-05-20 | 2015-05-20 | Electric motor end cap and its production method |
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| CN104821679A true CN104821679A (en) | 2015-08-05 |
| CN104821679B CN104821679B (en) | 2018-09-04 |
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| CN201510261122.0A Active CN104821679B (en) | 2015-05-20 | 2015-05-20 | Electric motor end cap and its production method |
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Cited By (3)
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| CN107470857A (en) * | 2017-07-07 | 2017-12-15 | 慈溪市龙山汽配有限公司 | The production technology of shell end cover |
| CN114556757A (en) * | 2019-10-15 | 2022-05-27 | 前进工厂-奥伯基尔希股份公司 | Method and device for producing a housing |
| CN114552921A (en) * | 2022-02-23 | 2022-05-27 | 浙江得业电机科技有限公司 | Brushless motor rotor assembling process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107470857A (en) * | 2017-07-07 | 2017-12-15 | 慈溪市龙山汽配有限公司 | The production technology of shell end cover |
| CN107470857B (en) * | 2017-07-07 | 2019-08-09 | 慈溪市龙山汽配有限公司 | The production technology of shell end cover |
| CN114556757A (en) * | 2019-10-15 | 2022-05-27 | 前进工厂-奥伯基尔希股份公司 | Method and device for producing a housing |
| CN114552921A (en) * | 2022-02-23 | 2022-05-27 | 浙江得业电机科技有限公司 | Brushless motor rotor assembling process |
| CN114552921B (en) * | 2022-02-23 | 2023-10-20 | 浙江得业电机科技有限公司 | Brushless motor rotor assembling process |
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| CN104821679B (en) | 2018-09-04 |
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Effective date of registration: 20160801 Address after: 213162 standard workshop Al, industrial square, science and Technology Industrial Park, Hutang Town, Wujin District, Jiangsu, Changzhou Applicant after: CHANGZHOU LEKVA ELECTRONICS CO., LTD. Address before: 213161 industrial square workshop, Hutang science and Technology Industrial Park, Hutang Town, Wujin District, Changzhou, Jiangsu Applicant before: Changzhou power speed electrically Science and Technology Ltd. |
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