CN102364841A - Cold extrusion manufacturing method for motor rotor housing - Google Patents
Cold extrusion manufacturing method for motor rotor housing Download PDFInfo
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- CN102364841A CN102364841A CN2011103438071A CN201110343807A CN102364841A CN 102364841 A CN102364841 A CN 102364841A CN 2011103438071 A CN2011103438071 A CN 2011103438071A CN 201110343807 A CN201110343807 A CN 201110343807A CN 102364841 A CN102364841 A CN 102364841A
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- wheel disc
- annular groove
- hub
- cold extrusion
- wheel
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Abstract
The invention discloses a cold extrusion manufacturing method for a motor rotor housing. The housing comprises a wheel disc (1) and a wheel casing (2), wherein the wheel disc (1) and the wheel casing (2) are coaxially assembled together. The manufacturing method comprises the following steps of: 1) manufacturing the wheel disc (1) according to an ordinary method, and machining an annular groove (3) below the wheel disc (1), wherein the depth of the annular groove (3) is 8 to 12mm, and the width of the annular groove (3) is 0.4 to 0.6mm less than the thickness of a steel pipe used for the wheel casing (2); 2) manufacturing the wheel casing (2) by adopting the seamless steel pipes, stamping the end, assembled together with the wheel disc (1), of the wheel casing (2) to form a closed structure, wherein the diameter of a closed end is equal to the external diameter of the annular groove (3) below the wheel disc (1); and 3) extending the closed end of the wheel casing (2) into the annular groove (3) below the wheel disc (1) in a cold extrusion way.
Description
Technical field
The present invention relates to the motor preparing technical field, particularly a kind of cold extrusion preparation method of rotor shell.
Background technology
As shown in Figure 1, present known permanent magnet motor rotor case is made up of wheel disc 1 and hub 2, and wheel disc 1 is generally cast member or machine adds part, is used for installing armature spindle; Hub 2 is a stamping parts then generally, is used for installing magnet steel, and wheel disc 1 fixedly is assembled together with rivet 3 with hub 2 coaxially.During manufacturing, process wheel disc 1 with casting or mechanical processing technique earlier, and on wheel disc 1, process the rivet via hole, produce hub 2 through punch forming with steel plate, and then wheel disc 1 is fixing with rivet 3 with hub 2 assembling backs.
Referring to Fig. 2, will be earlier when making hub 2 with steel plate through the blanking punched disc blank 5 that obtains, and then be hub 2 finished products of tubular with 5 punching presses of disc blank, drawing and forming; Required punch-forming mold structure is comparatively complicated; The leftover bits that in the operation that obtains disc blank 5, produce are more, thereby cost is higher, during assembling owing to will rivet with rivet; Complicated operation, riveted joint place also can influence product appearance.
Summary of the invention
To the deficiency of prior art, one of the object of the invention is to provide a kind of simplified manufacturing process, the preparation method of the rotor shell that cost is low.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of cold extrusion preparation method of rotor shell, this shell comprises wheel disc and hub, and wheel disc is assembled together with hub is coaxial, and its preparation method is:
1) prepare wheel disc by commonsense method, annular groove of Vehicle Processing below it makes that the degree of depth of annular groove is 8-12mm then, and the annular groove width is than the little 0.4-0.6mm of thickness of the used steel pipe of hub;
2) adopt seamless steel pipe to make hub, its end with the wheel disc assembling is struck out the closing in structure, the external diameter of the annular groove of diameter below wheel disc that making closes up holds equates;
3) the closing in end of hub is extended in the annular groove below the wheel disc through cold extrusion.
Adopt the rotor case of method for preparing, owing to need not rivet with rivet between wheel disc and the hub, simple in structure; Operation easily, need not processed the rivet via hole yet during assembling on wheel disc and hub, only needs cold extrusion to get final product; Manufacturing process is able to simplify; Hub can be directly with seamless steel pipe as raw material, can significantly reduce the leftover bits that produce in the manufacture process, thereby reduce the cost of whole permanent magnet motor rotor case.Simultaneously, adopt cold extrusion to combine, it is firm to make the two combine.
The invention has the beneficial effects as follows:
Simplified manufacturing process, assembly manipulation is easy, conservation, cost of manufacture is low, and wheel disc and hub combine firm.
Description of drawings
Fig. 1 is the sketch map of shell of the rotor of prior art;
Fig. 2 is the sketch map of manufacturing process of the rotor of prior art;
Fig. 3 is the sketch map of the structure of rotor of the present invention, and 1 is wheel disc among Fig. 3, and 2 is hub, and 3 is annular groove.
Fig. 4 is the sketch map that assembles before the extruding of rotor of the present invention.
Below in conjunction with accompanying drawing the present invention is further specified.
Embodiment
With reference to figure 3 and Fig. 4
Embodiment one
A kind of cold extrusion preparation method of rotor shell, this shell comprises wheel disc 1 and hub 2, wheel disc 1 and hub 2 coaxial being assembled together, its preparation method is:
1) prepare wheel disc 1 by commonsense method, annular groove 3 of Vehicle Processing below it makes that the degree of depth of annular groove 3 is 8mm then, and annular groove 3 width are than the little 0.4mm of thickness of hub 2 used steel pipes;
2) adopt seamless steel pipe to make hub 2, its end with wheel disc 1 assembling is struck out the closing in structure, make the close up external diameter of the following annular groove 3 of diameter and the wheel disc 1 of end equate;
3) the closing in end of hub 2 is extended in the annular groove 3 below the wheel disc 1 through cold extrusion.
Embodiment two
A kind of cold extrusion preparation method of rotor shell, this shell comprises wheel disc 1 and hub 2, wheel disc 1 and hub 2 coaxial being assembled together, its preparation method is:
1) prepare wheel disc 1 by commonsense method, annular groove 3 of Vehicle Processing below it makes that the degree of depth of annular groove 3 is 12mm then, and annular groove 3 width are than the little 0.6mm of thickness of hub 2 used steel pipes;
2) adopt seamless steel pipe to make hub 2, its end with wheel disc 1 assembling is struck out the closing in structure, make the close up external diameter of the following annular groove 3 of diameter and the wheel disc 1 of end equate;
3) the closing in end of hub 2 is extended in the annular groove 3 below the wheel disc 1 through cold extrusion.
Embodiment three
A kind of cold extrusion preparation method of rotor shell, this shell comprises wheel disc 1 and hub 2, wheel disc 1 and hub 2 coaxial being assembled together, its preparation method is:
1) prepare wheel disc 1 by commonsense method, annular groove 3 of Vehicle Processing below it makes that the degree of depth of annular groove 3 is 10mm then, and annular groove 3 width are than the little 0.5mm of thickness of hub 2 used steel pipes;
2) adopt seamless steel pipe to make hub 2, its end with wheel disc 1 assembling is struck out the closing in structure, make the close up external diameter of the following annular groove 3 of diameter and the wheel disc 1 of end equate;
3) the closing in end of hub 2 is extended in the annular groove 3 below the wheel disc 1 through cold extrusion.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technological process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technological process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technological process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and auxiliary element, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (1)
1. the cold extrusion preparation method of a rotor shell is characterized in that, this shell comprises wheel disc (1) and hub (2), wheel disc (1) and coaxial being assembled together of hub (2), and its preparation method is:
1) prepare wheel disc (1) by commonsense method, annular groove of Vehicle Processing (3) below it makes that the degree of depth of annular groove (3) is 8-12mm then, and annular groove (3) width is than the little 0.4-0.6mm of thickness of the used steel pipe of hub (2);
2) adopt seamless steel pipe to make hub (2), its end with wheel disc (1) assembling is struck out the closing in structure, make the close up external diameter of the following annular groove (3) of diameter and the wheel disc (1) of end equate;
3) the closing in end with hub (2) extends in the following annular groove (3) of wheel disc (1) through cold extrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103438071A CN102364841A (en) | 2011-11-03 | 2011-11-03 | Cold extrusion manufacturing method for motor rotor housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103438071A CN102364841A (en) | 2011-11-03 | 2011-11-03 | Cold extrusion manufacturing method for motor rotor housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102364841A true CN102364841A (en) | 2012-02-29 |
Family
ID=45691395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103438071A Pending CN102364841A (en) | 2011-11-03 | 2011-11-03 | Cold extrusion manufacturing method for motor rotor housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102364841A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707902A (en) * | 2015-02-02 | 2015-06-17 | 天津市东方标准件有限公司 | Stamping technology for motor shell for automobile |
-
2011
- 2011-11-03 CN CN2011103438071A patent/CN102364841A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707902A (en) * | 2015-02-02 | 2015-06-17 | 天津市东方标准件有限公司 | Stamping technology for motor shell for automobile |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120229 |