CN107070148A - A kind of small-sized copper rotor and its welding method - Google Patents
A kind of small-sized copper rotor and its welding method Download PDFInfo
- Publication number
- CN107070148A CN107070148A CN201710229400.3A CN201710229400A CN107070148A CN 107070148 A CN107070148 A CN 107070148A CN 201710229400 A CN201710229400 A CN 201710229400A CN 107070148 A CN107070148 A CN 107070148A
- Authority
- CN
- China
- Prior art keywords
- copper bar
- welding
- top ring
- lower loop
- rotor
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K5/00—Gas flame welding
- B23K5/006—Gas flame welding specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K5/00—Gas flame welding
- B23K5/213—Preliminary treatment
-
- 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
- H02K15/0012—Manufacturing cage rotors
-
- 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
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Induction Machinery (AREA)
Abstract
The invention belongs to technical field of motors, more particularly to a kind of small-sized copper rotor and its welding method, the small-sized copper rotor includes rotor core, top ring, lower loop, and copper bar, the top ring and lower loop are provided with open slot, the outer circumference surface of upper surface and lower surface described in the open slot insertion, the cross section of the copper bar is in one large one small bar-shaped, the copper bar is welded in the open slot, the overall diameter of the top ring and lower loop is 78.00mm, the curved face contact area of copper bar is big in the present invention, compare the copper bar of rectangle, more difficult failure welding；The outer circumference surface of open slot insertion top ring and lower loop, in welding, is easy to escape gas, can reduce the porosity of welding；In welding, due on top ring and lower loop being all open slot, therefore, it is possible to be intuitive to see the process of welding, it is easier to judge the success or failure of welding, to control welding process, the success rate of welding is improved.
Description
Technical field
The invention belongs to technical field of motors, more particularly to a kind of small-sized copper rotor and its welding method.
Existing small-sized squirrel-cage motor, it is use cast-aluminum rotor winding more, for more than 100kW motor, or adopt
Formed with copper bar and copper end ring welding.The complex process of cast-aluminum rotor winding and extremely consume energy.In addition, aluminium resistivity is higher, and
Easily by aluminium ingot impurity effect so that rotor loss is big, and electric efficiency is low.This " characteristic " of cast-aluminum rotor, into restriction electricity
One of bottleneck that engine efficiency is improved.
Cast-aluminum rotor is replaced using copper rotor, the efficiency of motor can be significantly improved, but small rotor is according to copper bar
If being formed with copper end ring welding, because size is small, the complexity of operation, easy failure welding are improved.
In view of above-mentioned defect, the design people is actively subject to research and innovation, to found a kind of small-sized copper rotor and its
Welding method, makes it with more the value in industry.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of small-sized copper rotor and its welding method, this is small
The intact degree of type copper rotor convenient observation welding in welding process, and be easy to escape gas, the porosity is reduced, welding is improved
Success rate.
The present invention proposes a kind of small-sized copper rotor and its welding method, the small-sized copper rotor include rotor core, on
End ring, lower loop and copper bar, the top ring and lower loop be provided with open slot, upper surface described in the open slot insertion and
The outer circumference surface of lower surface, the cross section of the copper bar is in one large one small bar-shaped, and the copper bar is welded on the opening
In groove, the overall diameter of the top ring and lower loop is 78.00mm, and the welding method comprises the following steps：
S1：Top ring, lower loop and the dirt on copper bar surface are removed using cleaning machine, is allowed to expose metallic luster；
S2：The fixed top ring, lower loop and rotor core, by the slotted eye on the open slot and the rotor core
Correspond；
S3.：The top ring corresponded to, lower loop and rotor core are placed in 180 DEG C of baking oven and heated 30 minutes；
S4：Rotor is erected, makes armature spindle perpendicular to ground, to facilitate insertion copper bar；
S5：Copper bar is inserted, copper bar fills whole open slot, length and the end face of the top ring and lower loop；
S6：The rotor for inserting copper bar is positioned on " V " type support, is easy to roll and welds；
S7：Welding gun is lighted, flame is tuned into neutral flame, the end of rotor core is preheated, homogeneous heating is noted；
S8：When top ring and copper bar are heated to 660 DEG C~800 DEG C, start welding, side welding edge is promoted, and is soldered upper end
The 1/4 of ring circumference, the red heat situation of observation solder flux, top ring and copper bar, prevents temperature too low or too high, is soldered one week, it is to avoid
There is obvious weld seam, observe the whether rounded transition in commissure, whether top ring, in infiltration shape, in this way, then welds with copper bar
It is intact；
S9：With same method welding lower loop and copper bar.
By such scheme, the present invention at least has advantages below：Compare the curved surface of copper bar in the copper bar of rectangle, the present invention
Contact area is big, more difficult failure welding；The outer circumference surface of open slot insertion top ring and lower loop, in welding, is easy to
Escape gas, the porosity of welding can be reduced；In welding, due on top ring and lower loop being all open slot, therefore, it is possible to
It is intuitive to see the process of welding, it is easier to judge the success or failure of welding, to control welding process, improves the success rate of welding.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is the structural representation of middle-size and small-size copper rotor top ring of the invention；
Fig. 2 is the structural representation of middle-size and small-size copper rotor lower loop of the invention and copper bar.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Referring to Fig. 1 and Fig. 2, a kind of small-sized copper rotor and its welding method described in a preferred embodiment of the present invention, wherein,
Small-sized copper rotor includes rotor core, top ring 1, lower loop 2 and copper bar 3, and top ring 1 and lower loop 2 are provided with open slot 4,
The insertion upper surface of open slot 4 and the outer circumference surface of lower surface, the cross section of copper bar 3 is in one large one small bar-shaped, and copper bar 3 is welded
It is connected in open slot 4, the overall diameter of top ring 1 and lower loop 2 is 78.00mm.
During welding, top ring 1, lower loop 2 and the dirt on the surface of copper bar 3 are removed first by cleaning machine, is allowed to expose gold
Belong to gloss, then by rotor iron core laminated on dummy shaft, top ring 1, lower loop 2 and rotor core pass through fixture locking, upper end
Open slot 4 on ring 1 and lower loop 2 is corresponded with the slotted eye on rotor core.Then by the top ring 1 corresponded to, lower end
Ring 2 and rotor core are placed in heating 30 minutes in 180 DEG C of baking oven, make its expanded by heating, facilitate insertion into (the rotor core of copper bar 3
Slot size and the size difference of copper bar 3 be 1mm), before insertion, rotor is erected, makes armature spindle perpendicular to ground, to insert
Copper bar, during insertion, need to beat the top at the two ends of copper bar 3, it might even be possible to distort a bit, to ensure that copper bar 3 is fitted with rotor core
Closely.Copper bar 3 fills whole open slot 4, length and the end face of top ring 1 and lower loop 2.The rotor of copper bar 3 will be inserted
It is positioned on " V " type support, is easy to roll and welds, then, welding top ring 1 and copper bar 3, welding gun is lighted, during flame is tuned into
Property flame, preheats to the end of rotor core, notes homogeneous heating；When top ring 1 and copper bar 3 are heated to 660 DEG C~800 DEG C
When, start welding, side welding edge is promoted, be soldered the 1/4 of the circumference of top ring 1, the red heat feelings of observation solder flux, top ring 1 and copper bar 3
Condition, prevents temperature too low or too high, is soldered one week, it is to avoid obvious weld seam occur, in welding, and solder flux can slowly melt and free
Flowing, observes the whether rounded transition in commissure, and whether top ring 1, in infiltration shape, in this way, then welds intact with copper bar 3.With same
The method welding lower loop 2 and copper bar 3 of sample.
In welding process, due to rotor core and the tension face expanded by heating of copper bar 3, deformation direction is not known, copper bar 3
Putting to change, and need to ensure the end face of copper bar 3 and top ring 1.After the completion of welding, through observation shows that, copper bar 3 and upper
Crackle is less on the end face of lower loop.
The present invention instead of the cast-aluminum rotor winding of conventional small rotor using copper bar 3 and copper end ring, improve motor
Efficiency；The cross section of copper bar 3 is in one large one small bar-shaped, in motor start-up procedure, and the electric current of copper bar 3 will be produced to opening
Skin-effect in the notch direction set of mouth groove 4, the iron core groove profile of rotor is close with respect to teeth portion magnetic to be evenly distributed, and is encouraged needed for teeth portion
Under conditions of magnetic magnetomotive force is certain, larger groove area is can obtain, tooth root width is larger, and skin-effect is smaller；Compare rectangle
The curved face contact area of copper bar 3 is big in copper bar 3, the present invention, more difficult failure welding；The insertion top ring 1 of open slot 4 and lower end
The outer circumference surface of ring 2, in welding, is easy to escape gas, can reduce the porosity of welding；In welding, because top ring 1 is with
On end ring 2 is all open slot 4, therefore, it is possible to be intuitive to see the process of welding, it is easier to judge the success or failure of welding, to control
Welding process, improves the success rate of welding.
Described above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is some improvement and
Modification, these improvement and modification also should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of small-sized copper rotor and its welding method, it is characterised in that：The small-sized copper rotor includes rotor core, upper end
Ring, lower loop and copper bar, the top ring and lower loop are provided with open slot, and upper surface described in the open slot insertion is with
The outer circumference surface of end face, the cross section of the copper bar is in one large one small bar-shaped, and the copper bar is welded on the open slot
Interior, the overall diameter of the top ring and lower loop is 78.00mm, and the welding method comprises the following steps：
S1：Top ring, lower loop and the dirt on copper bar surface are removed using cleaning machine, is allowed to expose metallic luster；
S2：Fixed top ring, lower loop and rotor core, the slotted eye on open slot and rotor core is corresponded；
S3：The top ring corresponded to, lower loop and rotor core are placed in 180 DEG C of baking oven and heated 30 minutes；
S4：Rotor is erected, makes armature spindle perpendicular to ground, to facilitate insertion copper bar；
S5：Copper bar is inserted, copper bar fills whole open slot, length and the end face of top ring and lower loop；
S6：The rotor for inserting copper bar is positioned on " V " type support, is easy to roll and welds；
S7：Welding gun is lighted, flame is tuned into neutral flame, the end of rotor core is preheated, homogeneous heating is noted；
S8：When top ring and copper bar are heated to 660 DEG C~800 DEG C, start welding, side welding edge is promoted, be soldered top ring circle
The 1/4 of week, the red heat situation of observation solder flux, top ring and copper bar, prevents temperature too low or too high, is soldered one week, it is to avoid occur
Obvious weld seam, observes the whether rounded transition in commissure, and whether top ring, in infiltration shape, in this way, then welds intact with copper bar；
S9：With same method welding lower loop and copper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229400.3A CN107070148A (en) | 2017-04-10 | 2017-04-10 | A kind of small-sized copper rotor and its welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229400.3A CN107070148A (en) | 2017-04-10 | 2017-04-10 | A kind of small-sized copper rotor and its welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107070148A true CN107070148A (en) | 2017-08-18 |
Family
ID=59603152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710229400.3A Pending CN107070148A (en) | 2017-04-10 | 2017-04-10 | A kind of small-sized copper rotor and its welding method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107070148A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494181A (en) * | 2018-03-19 | 2018-09-04 | 蔚来汽车有限公司 | Welding method for conducting bar plug-in type rotor |
| CN108649761A (en) * | 2018-06-19 | 2018-10-12 | 广东美芝制冷设备有限公司 | Rotor and compressor |
| CN108788448A (en) * | 2018-09-06 | 2018-11-13 | 上海锢维智能设备有限公司 | A kind of welding equipment and method of motor copper rotor |
| CN109639066A (en) * | 2017-10-09 | 2019-04-16 | 抚顺煤矿电机制造有限责任公司 | Method is welded and fixed in a kind of rotor end ring |
| CN109861466A (en) * | 2019-04-03 | 2019-06-07 | 黄伟 | The Joining Technology of cage induction motor copper bar and end ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736707A (en) * | 1996-04-17 | 1998-04-07 | General Electric Company | Electric resistance welding of electric motor cage rotor assemblies |
| CN101557145A (en) * | 2008-04-11 | 2009-10-14 | 上海电气集团上海电机厂有限公司 | Soldering method of conducting ring of motor rotor |
| CN101951043A (en) * | 2010-10-15 | 2011-01-19 | 无锡哈电电机有限公司 | End ring structure of squirrel cage rotor |
| CN101997348A (en) * | 2009-08-25 | 2011-03-30 | 上海日立电器有限公司 | Motor rotor using insert-type copper strip to replace aluminum row for refrigerating compressor |
-
2017
- 2017-04-10 CN CN201710229400.3A patent/CN107070148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736707A (en) * | 1996-04-17 | 1998-04-07 | General Electric Company | Electric resistance welding of electric motor cage rotor assemblies |
| CN101557145A (en) * | 2008-04-11 | 2009-10-14 | 上海电气集团上海电机厂有限公司 | Soldering method of conducting ring of motor rotor |
| CN101997348A (en) * | 2009-08-25 | 2011-03-30 | 上海日立电器有限公司 | Motor rotor using insert-type copper strip to replace aluminum row for refrigerating compressor |
| CN101951043A (en) * | 2010-10-15 | 2011-01-19 | 无锡哈电电机有限公司 | End ring structure of squirrel cage rotor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639066A (en) * | 2017-10-09 | 2019-04-16 | 抚顺煤矿电机制造有限责任公司 | Method is welded and fixed in a kind of rotor end ring |
| CN108494181A (en) * | 2018-03-19 | 2018-09-04 | 蔚来汽车有限公司 | Welding method for conducting bar plug-in type rotor |
| CN108649761A (en) * | 2018-06-19 | 2018-10-12 | 广东美芝制冷设备有限公司 | Rotor and compressor |
| CN108788448A (en) * | 2018-09-06 | 2018-11-13 | 上海锢维智能设备有限公司 | A kind of welding equipment and method of motor copper rotor |
| CN109861466A (en) * | 2019-04-03 | 2019-06-07 | 黄伟 | The Joining Technology of cage induction motor copper bar and end ring |
| CN109861466B (en) * | 2019-04-03 | 2023-09-29 | 黄伟 | Connection method of squirrel-cage asynchronous motor rotor copper bar and end ring |
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Application publication date: 20170818 |