CN107707046B - High-speed motor cast copper rotor core and processing method thereof - Google Patents
High-speed motor cast copper rotor core and processing method thereof Download PDFInfo
- Publication number
- CN107707046B CN107707046B CN201711174592.9A CN201711174592A CN107707046B CN 107707046 B CN107707046 B CN 107707046B CN 201711174592 A CN201711174592 A CN 201711174592A CN 107707046 B CN107707046 B CN 107707046B
- Authority
- CN
- China
- Prior art keywords
- locking process
- sheet
- mold
- rotor
- punching sheet
- 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.)
- Active
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 57
- 239000010949 copper Substances 0.000 title claims abstract description 57
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 238000004080 punching Methods 0.000 claims abstract description 274
- 238000000034 method Methods 0.000 claims abstract description 226
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 238000007723 die pressing method Methods 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 46
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 7
- 238000005266 casting Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 241000555745 Sciuridae Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a processing method of a cast copper rotor core of a high-speed motor, which comprises the following steps: arranging a bottom layer mold locking process punching sheet on a mold bottom plate, and sleeving the bottom layer mold locking process punching sheet on a mold core rod on the mold bottom plate; sleeving a plurality of rotor punching sheets on a die core rod and locating above the bottom layer die locking process punching sheets; a capping and mold locking process punching sheet for capping is arranged above the rotor punching sheet; the bottom layer mold locking process punching sheet and the top sealing mold locking process punching sheet are plastic mold locking process punching sheets; and sleeving the die pressing plate on the die core rod, pressing the die pressing plate on the die locking process punching sheet positioned at the top end, and performing pressing processing on the die pressing plate. By combining the thinner rotor punching sheet and the mold locking process punching sheet, the mold pressing plate is pressed, the plastic mold locking process punching sheet can continuously keep interference fit with the mold core rod after being deformed, and the punching sheet cannot become loose. The invention also discloses the cast copper rotor core of the high-speed motor manufactured by the processing method.
Description
Technical Field
The invention relates to the technical field of motor design, in particular to a method for processing a cast copper rotor core of a high-speed motor. In addition, the invention also relates to a high-speed motor cast copper rotor core.
Background
In order to reduce the iron loss of the motor, the high-speed motor needs to adopt a silicon steel sheet with lower iron loss and thinner thickness (such as 0.20mm thickness). In the high-speed asynchronous motor, in order to further reduce rotor loss, copper loss of the rotor can be effectively reduced by adopting the cast copper rotor. Therefore, in the high-speed asynchronous motor, the rotor loss and the rotor temperature rise can be effectively reduced by adopting a rotor structure combining a thinner punching iron core and a cast copper squirrel cage, and the rotor structure is a high-speed asynchronous motor rotor structure with outstanding performance.
The rotor punching sheet is required to be laminated into a rotor core, and the laminated rotor core is required to have corresponding positioning precision and structural strength. The rotor core is pressed into the rotating shaft after copper casting is completed, so that the inner hole of the rotor core is not provided with the rotating shaft when the rotor core is laminated, the inner hole of the rotor core is hollow and matched with the core rod of the casting copper casting die, the rotor core is conveniently inserted into the rotor core by adopting small clearance fit between the rotor core and the die core, the rotor core can be laminated and tightly pressed in the axial direction under the action of the pressure by applying certain pressure to the laminated rotor core, the rotor core can be deformed to a certain extent by the pressure, enough friction is generated between the inner hole of the rotor core and the die core, the rotor core is removed after the certain application time of the pressure is kept, the laminated and tightly pressed state of the rotor core is kept by virtue of the friction force between the rotor core and the die core, and the rotor core is kept for a long time without loosening. So far, through the friction effect between the rotor punching sheet and the die core rod, the rotor punching sheet and the die core rod become a compact rotor punching sheet locking iron core which has certain strength and does not contain a cast copper squirrel cage structure, and the rotor punching sheet locking iron core can enter the next working procedure of casting a cast copper rotor.
However, for a high-speed asynchronous motor, a cast copper rotor usually adopts a thinner punching sheet, and the elastic restoring force of the thinner punching sheet is larger, the deformation of an inner hole of the rotor punching sheet is smaller after pressure is applied and removed, and the friction between the inner hole and a die core rod is insufficient, so that the rotor punching sheet iron core is loosened and cannot be locked with the core rod, namely the lamination and die locking of the rotor punching sheet iron core fail. However, if a thicker silicon steel sheet is adopted, larger iron loss of the rotor is often caused, the rotor heats seriously, and the motor performance is poor.
In summary, how to keep the relative positional relationship between the rotor punching iron core and the core rod to avoid the instability of the rotor iron core structure is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for processing a copper cast rotor core of a high-speed motor, which can avoid instability of the rotor core structure.
Another object of the present invention is to provide a high-speed motor cast copper rotor core manufactured by the above method.
In order to achieve the above object, the present invention provides the following technical solutions:
a processing method of a cast copper rotor core of a high-speed motor comprises the following steps:
s1, arranging a bottom layer mold locking process punching sheet on a mold bottom plate, and sleeving the bottom layer mold locking process punching sheet on a mold core rod on the mold bottom plate;
s2, sleeving a plurality of rotor punching sheets on the die core rod and locating above the bottom layer die locking process punching sheets;
s3, arranging a capping and mold locking process punching sheet for capping above the rotor punching sheet; the bottom layer mold locking process punching sheet and the top sealing mold locking process punching sheet are plastic mold locking process punching sheets;
and S4, sleeving a die pressing plate on the die core rod, pressing the die pressing plate on the die locking process punching sheet positioned at the top end, and performing pressing processing on the die pressing plate.
Preferably, the step S3 further includes:
and a plurality of middle mold locking process punching sheets and the rotor punching sheets are overlapped on the rotor punching sheets along the mold core rod, wherein the middle mold locking process punching sheets are plastic mold locking process punching sheets.
Preferably, the press working of the die pressing plate includes: applying a pressure to the mold platen toward a preset pressure and maintaining the pressure for a preset time.
Preferably, the thickness of the bottom layer mold locking process punching sheet is greater than or equal to the thickness of the rotor punching sheet, and the thickness of the capping mold locking process punching sheet is greater than or equal to the thickness of the rotor punching sheet.
A high speed motor cast copper rotor core comprising:
the die comprises a die bottom plate provided with a die core rod, wherein the die core rod is vertically arranged on the die bottom plate;
the bottom layer mold locking process punching sheet is arranged on the mold bottom plate and sleeved on the mold core rod, and is a plastic mold locking process punching sheet;
the rotor punching sheets are sleeved on the outer side of the die core rod;
the top-sealing die-locking process punching sheet is used for sealing the top and is arranged above the uppermost rotor punching sheet, a die pressing plate is arranged above the top-sealing die-locking process punching sheet, and the top-sealing die-locking process punching sheet is a plastic die-locking process punching sheet.
Preferably, a plurality of middle mold locking process punching sheets are arranged between the bottom mold locking process punching sheet and the top-sealing mold locking process punching sheet, the middle mold locking process punching sheets are sleeved on the die core rod, the middle mold locking process punching sheets are arranged in a penetrating manner with the rotor punching sheets, and the middle mold locking process punching sheets are plastic mold locking process punching sheets.
Preferably, the thickness of the bottom layer mold locking process punching sheet, the top sealing mold locking process punching sheet and the middle mold locking process punching sheet is 0.1mm to 0.5mm larger than that of the rotor punching sheet.
Preferably, the bottom layer mold locking process punching sheet comprises an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet, the top sealing mold locking process punching sheet comprises an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet, and the middle mold locking process punching sheet comprises an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet.
According to the method provided by the invention, in the cast copper rotor of the high-speed asynchronous motor, on the basis of adopting a thinner rotor punching sheet, a mold locking process punching sheet is introduced to realize mold locking between the rotor punching sheet and a mold core rod. The rotor punching iron core is formed by combining and laminating two thinner rotor punching and plastic locking process punching, the shapes of the two punching can be completely the same, but the two punching types are different, and the bottom layer locking process punching and the top sealing locking process punching are both plastic locking process punching, so that the plastic is strong and the elasticity is low.
Through the combination of the rotor punching sheet and the mold locking process punching sheet, a certain force is applied to the mold pressing plate and maintained for a certain time, at this time, the rotor punching sheet and the inner hole of the mold locking process punching sheet deform under the action of pressure, and become smaller, at this time, after the plastic mold locking process punching sheet deforms, the inner hole of the rotor punching sheet and the mold core rod become interference fit, and then the pressure and the mold pressing plate are removed, and due to the structure with stronger plasticity, the plastic mold locking process punching sheet can basically keep deformation, and continuously keep the interference fit with the mold core rod, even if the thinner rotor punching sheet can recover deformation, the interference fit between the thinner rotor punching sheet and the mold core rod disappears, and the plastic mold locking process punching sheet has smaller elasticity and can not deform, at this time, the mold locking of the rotor core can still be ensured through the friction force between the mold locking process punching sheet and the mold core rod, and the punching sheet can not become loose.
In a preferred embodiment, the bottom layer mold locking process punch and the capping mold locking process punch are plastic punches having a thickness greater than the thickness of the rotor punch.
The invention also provides the high-speed motor cast copper rotor core manufactured by the processing method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a cast copper rotor core of a high-speed motor provided by the invention;
FIG. 2 is a schematic view of a cast copper rotor core of a high-speed motor according to the present invention;
FIG. 3 is a schematic view of a rotor sheet according to the present invention;
FIG. 4 is a schematic view of a die-locking process punch provided by the present invention;
fig. 5 is a flowchart of a method for processing a cast copper rotor core of a high-speed motor provided by the invention.
In fig. 1-4:
the rotor punching sheet 1, the mold locking process punching sheet 2, the bottom mold locking process punching sheet 21, the middle mold locking process punching sheet 22, the top-sealing mold locking process punching sheet 23, the mold bottom plate 3, the mold pressing plate 4 and the mold core rod 5.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The core of the invention is to provide a processing method of the cast copper rotor core of the high-speed motor, and the cast copper rotor core of the high-speed motor processed by the method can avoid the instability of the rotor core structure.
The invention further provides the high-speed motor cast copper rotor core manufactured by the method.
Referring to fig. 1 to 4, fig. 1 is a schematic diagram of a copper cast rotor core of a high-speed motor according to the present invention; FIG. 2 is a schematic view of a cast copper rotor core of a high-speed motor according to the present invention; FIG. 3 is a schematic view of a rotor sheet according to the present invention; FIG. 4 is a schematic view of a die-locking process punch provided by the present invention; fig. 5 is a flowchart of a method for processing a cast copper rotor core of a high-speed motor provided by the invention.
The invention provides a method for processing a cast copper rotor core of a high-speed motor, which is mainly used for processing the rotor core and comprises the following main steps:
step S1, arranging the bottom layer mold locking process punching sheet 21 on the mold bottom plate 3, and enabling the bottom layer mold locking process punching sheet 21 to be sleeved on the mold core rod 5 on the mold bottom plate 3.
Step S2, sleeving a plurality of rotor punching sheets 1 on the die core rod 5 and locating above the bottom layer die locking process punching sheet 21.
Step S3, arranging a capping and mold locking process punching sheet 23 for capping above the rotor punching sheet 1; the bottom layer mold locking process punching sheet 21 and the top sealing mold locking process punching sheet 23 are all plastic mold locking process punching sheets.
And S4, sleeving the die pressing plate 4 on the die core rod 5, pressing the die pressing plate 4 on the die locking process punching sheet positioned at the top end, and performing pressing processing on the die pressing plate 4.
It should be noted that, the mold core rod 5 is disposed on the mold base plate 3, and the mold core rod 5 is generally disposed perpendicular to the main plane of the mold base plate 3, and in step S1, the bottom layer mold locking process punching sheet 21 is sleeved on the mold core rod 5 and placed on the mold base plate 3 so as to serve as a base of the rotor punching sheet 1.
In step S2, the rotor sheet 1 is disposed on the bottom layer mold locking process sheet 21, that is, both are sleeved on the mold core rod 5 and are adhered to each other. The number of the rotor punching sheets 1 can be adjusted according to actual conditions, the planar structure of the rotor punching sheets 1 is the same as that of the bottom layer mold locking process punching sheet 21, but the two types of the rotor punching sheets are different, and the bottom layer mold locking process punching sheet and the top sealing mold locking process punching sheet are plastic mold locking process punching sheets, so that the plastic property is strong and the elasticity is low.
In step S3, the rotor sheet 1 is further provided with a capping and mold locking process sheet 23, and the capping and mold locking process sheet 23 and the bottom layer mold locking process sheet 21 serve to clamp all the rotor sheets 1 therebetween.
In step S4, the die platen 4 is sleeved on the die core rod 5 and pressed against the die-locking process punch at the top end, and the die platen 4 is subjected to press processing. Because the capping and locking process punching sheet 23 and the bottom layer locking process punching sheet 21 arranged under the die pressing plate deform and become smaller under the action of pressure, the inner holes of the capping and locking process punching sheets and the die core rod become in interference fit, and the pressure and the die pressing plate 4 are removed, the rotor locking process punching sheet 2 basically keeps deforming and continuously keeps in interference fit with the die core rod 5, so that the rotor punching sheet 1 clamped between the capping and locking process punching sheet and the bottom layer locking process punching sheet can be clamped, the locking of a rotor iron core is realized, and the loosening of a structure is avoided.
According to the invention, in a cast copper rotor of a high-speed asynchronous motor, on the basis of adopting a thinner (such as 0.20mm thickness) rotor punching sheet 1, a mold locking process punching sheet 2 is introduced to realize mold locking between the rotor punching sheet 1 and a mold core rod 5. The rotor punching iron core is formed by combining and laminating two punching sheets of a thinner rotor punching sheet 1 and a mold locking process punching sheet 2, and the shapes of the two punching sheets can be completely the same.
In the rotor punching sheet laminating and die locking structure with the structure, a certain force is applied to the die pressing plate and maintained for a certain time through the combination of the rotor punching sheet and the die locking process punching sheet, at the moment, the inner holes of the rotor punching sheet and the die locking process punching sheet deform under the action of pressure, at the moment, after the plastic die locking process punching sheet deforms, the inner holes of the rotor punching sheet and the die core rod become in interference fit, then the pressure and the die pressing plate are removed, the plastic die locking process punching sheet can basically keep deformation and keep the interference fit with the die core rod due to the structure with stronger plasticity, and even if the thinner rotor punching sheet can recover deformation, the interference fit between the plastic die locking process punching sheet and the die core rod disappears, and the plastic die locking process punching sheet has smaller elasticity and can not deform, at the moment, the die locking of the rotor core can still be ensured through the friction force between the die locking process punching sheet and the die core rod, and the die core rod can not become loose. The next operation of casting copper pouring can be continued.
Optionally, the two kinds of punching plates can be arranged in various different ways, so that the rotor punching plate iron core die locking is facilitated, and meanwhile, the high-speed motor after copper casting by adopting the rotor is ensured to run stably, namely, the influence of the introduced die locking process punching plates on the performance of the high-speed motor is as small as possible. In general, in the rotor punching iron core, a conventional thinner rotor punching (such as a 0.20mm silicon steel sheet) occupies most of the rotor punching iron core so as to ensure the electromagnetic performance of the rotor punching iron core.
On the basis of the above embodiment, before step S3, further includes:
step S31: a plurality of middle mold locking process punching pieces 22 and rotor punching pieces 1 are overlapped on the rotor punching pieces 1 along the mold core rod 5, and the middle mold locking process punching pieces 22 are plastic mold locking process punching pieces.
It should be noted that, the middle mold locking process punching sheet 22 is a mold locking process punching sheet 2 disposed between the bottom mold locking process punching sheet 21 and the top mold sealing process punching sheet 23, and is used for facilitating the improvement of the stability of the structure among the plurality of rotor punching sheets when the number of rotor punching sheets 1 is large.
On the basis of any one of the above embodiments, the step S4 of performing press working on the die platen 4 specifically includes: the mold platen 4 is applied with a pressure toward a preset pressure and held for a preset time.
It should be noted that the pressing process needs to be maintained for a certain time to realize the pressing deformation operation of the opposite punching sheet.
On the basis of any one of the above embodiments, the thickness of the bottom layer mold locking process punching sheet 21 is greater than or equal to the thickness of the rotor punching sheet 1, and the thickness of the capping mold locking process punching sheet 23 is greater than or equal to the thickness of the two rotor punching sheets 1. The thickness of the intermediate die-lock process sheet 22 is greater than or equal to the thickness of the rotor sheet 1.
It should be noted that, the bottom layer mold clamping process punching sheet 21 and the top sealing mold clamping process punching sheet 23 may only have differences in material and thickness.
It should be noted that, the structures of the rotor punching sheet 1, the die bottom plate 3, the die core rod 5 and the die locking process punching sheet 2 provided in any of the foregoing embodiments may be specifically referred to the description of the embodiments of the high-speed motor cast copper rotor core in this application.
In addition to the processing method of the high-speed motor cast copper rotor core provided by the above embodiments, the invention also provides a high-speed motor cast copper rotor core manufactured by the method, which mainly comprises the following steps in structure: rotor punching sheet 1, die bottom plate 3, die core rod 5 and die locking process punching sheet 2.
The die bottom plate 3 is provided with a die core rod 5, and the die core rod 5 is vertically arranged on the die bottom plate 3.
The bottom layer mold locking process punching sheet 21 is arranged on the mold bottom plate 3, the bottom layer mold locking process punching sheet 21 is sleeved on the mold core rod 5, and the bottom layer mold locking process punching sheet 21 is a plastic mold locking process punching sheet.
The rotor punching sheets 1 are arranged on the bottom layer mold locking process punching sheet 21, and the number of the rotor punching sheets 1 can be one, two or more than two, and the rotor punching sheets 1 are sleeved on the outer side of the mold core rod 5.
The capping and locking process punching sheet 23 is used for capping the rotor punching sheet 1, the capping and locking process punching sheet 23 is arranged above the uppermost rotor punching sheet 1, a die pressing plate 4 is arranged above the capping and locking process punching sheet 23, and the capping and locking process punching sheet 23 is a plastic locking process punching sheet.
Because the bottom layer mold locking process punching sheet 21 and the capping mold locking process punching sheet 23 are plastic mold locking process punching sheets, the plasticity is strong, and the inner ring of the bottom layer mold locking process punching sheet is fixed with the die core rod 5 in an interference fit manner in the pressing process, and rebound deformation is not easy to occur after the pressing is completed.
On the basis of any one of the above embodiments, a plurality of intermediate mold locking process punches 22 are arranged between the bottom mold locking process punch 21 and the top-sealing mold locking process punch 23, the intermediate mold locking process punch 22 is sleeved on the mold core rod 5, the intermediate mold locking process punch 22 is arranged in a penetrating manner with the rotor punch 1, and the intermediate mold locking process punch 22 is a plastic mold locking process punch.
Referring to fig. 1 and 2, in order to distinguish two different kinds of punched sheets, the rotor punched sheet 1 is a common punched sheet, and the bottom layer mold locking process punched sheet 21, the top sealing mold locking process punched sheet 23 and the middle mold locking process punched sheet 22 are punched sheets marked with cross lines.
Alternatively, the thicknesses of the bottom layer mold locking process punching sheet 21, the top sealing mold locking process punching sheet 23 and the middle mold locking process punching sheet 22 are all larger than the rotor punching sheet 1, and alternatively, the thicknesses of the first three may be twice that of the rotor punching sheet 1.
On the basis of any one of the above embodiments, the thicknesses of the bottom layer mold locking process punching sheet 21, the top sealing mold locking process punching sheet 23 and the middle mold locking process punching sheet 22 are all 0.1mm to 0.5mm larger than the thickness of the rotor punching sheet 1.
Optionally, the thickness of the bottom layer mold locking process punch 21 ranges from 0.4mm to 0.7mm, the thickness of the capping mold locking process punch 23 ranges from 0.4mm to 0.7mm, and the thickness of the middle mold locking process punch 22 ranges from 0.4mm to 0.7mm, and accordingly, the thickness of the rotor punch 1 needs to be smaller than the thickness of each of the mold locking process punches.
Alternatively, the thickness of the rotor sheet 1 may be selected to be 0.15, 0.20, 0.30, 0.35, 0.50mm, and accordingly, the thickness of the sheet in the above-mentioned mold locking process needs to be greater than the thickness of the rotor sheet 1.
On the basis of any one of the above embodiments, the bottom layer mold locking process punching sheet 21 includes an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet, the capping mold locking process punching sheet 23 includes an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet, and the intermediate mold locking process punching sheet 22 includes an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet.
The stamping sheets of the mold locking process are made of different materials, and mainly consider that the stamping sheets of the plastic mold locking process can better form interference fit with the core rod of the mold when pressure is applied, and can still keep deformation without retraction when the pressure is removed, so that mold locking is realized. The die locking process stamping can select thicker (such as 0.50mm thickness) silicon steel sheet stamping, iron sheet with certain thickness, stainless steel sheet, aluminum sheet, copper sheet and the like.
According to the invention, on the basis of adopting a thinner (such as 0.20mm thickness) rotor punching sheet 1, a mold locking process punching sheet is introduced to realize mold locking between the rotor punching sheet iron core 1 and the mold core rod 5. The rotor punching sheet 1 and the mold locking process punching sheet 2 are formed by combining and laminating, the two punching sheets are identical in shape, different in material, free from rebound after the plastic mold locking process punching sheet is pressed, and further different in thickness.
In addition, the two kinds of punching can adopt a plurality of different arrangements, wherein one arrangement cross mode is that the punching of the mold locking process is respectively provided with 2 pieces at the upper end part and the lower end part of the rotor punching iron core, 2 pieces of middle mold locking process punching 22 are arranged at the middle average interval, and the arrangement modes of the specific mold locking process punching and the rotor punching are as follows: the method is favorable for realizing the die locking of the rotor punching iron core, and ensures that the high-speed motor after copper casting by adopting the rotor runs stably, namely the influence of the introduced die locking process punching on the performance of the high-speed motor is as small as possible. In the rotor punching iron core, a conventional thinner rotor punching (such as a 0.20mm silicon steel sheet) occupies most of the rotor punching iron core so as to ensure the electromagnetic performance of the rotor punching iron core.
And selecting a silicon steel sheet (such as 0.20 mm) with proper thickness as a design punching sheet in the cast copper rotor, selecting a material and thickness of the punching sheet by a proper mold locking process, and mainly considering elasticity, conductivity and magnetic conductivity of the material, wherein the former influences friction force required by mold locking, and the latter influences locking loss and electromagnetic performance. For example, silicon steel sheet, stainless steel sheet, etc. with thicker thickness are selected.
The arrangement mode of the punching sheets and the mold locking process punching sheets is determined according to the rotor stacking thickness, so that the mold locking process punching sheets can provide enough friction force with a mold core rod during mold locking, and meanwhile, the influence of the mold locking process punching sheets on the electromagnetic performance of the rotor, particularly the influence of rotor loss, is reduced as much as possible.
Except for the main structure of the copper cast rotor core of the high-speed motor, the structure of other parts of the copper cast rotor core of the high-speed motor is referred to the prior art, and is not repeated herein. In addition, please refer to the embodiment of the method for processing the copper cast rotor core of the high-speed motor for the main manufacturing process of the copper cast rotor core of the high-speed motor.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The high-speed motor cast copper rotor core and the processing method thereof provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (6)
1. The method for processing the cast copper rotor core of the high-speed motor is characterized by comprising the following steps of:
s1, arranging a bottom layer mold locking process punching sheet (21) on a mold bottom plate (3), and enabling the bottom layer mold locking process punching sheet (21) to be sleeved on a mold core rod (5) on the mold bottom plate (3);
s2, sleeving a plurality of rotor punching sheets (1) on the die core rod (5) and locating above the bottom layer die locking process punching sheet (21);
s3, arranging a capping and mold locking process punching sheet (23) for capping above the rotor punching sheet (1); the bottom layer mold locking process punching sheet (21) and the top sealing mold locking process punching sheet (23) are plastic mold locking process punching sheets;
s4, sleeving a die pressing plate (4) on the die core rod (5) and pressing the die pressing plate on the die locking process punching sheet positioned at the top end, and performing pressing processing on the die pressing plate (4);
a plurality of middle mold locking process punching sheets (22) and the rotor punching sheet (1) are overlapped on the rotor punching sheet (1) along the mold core rod (5), and the middle mold locking process punching sheets (22) are plastic mold locking process punching sheets;
in the step S4, the capping and locking process punching sheet (23) and the bottom layer locking process punching sheet (21) which are arranged below the die pressing plate (4) deform and become smaller under the action of pressure, the inner hole of the capping and locking process punching sheet and the die core rod become in interference fit, the pressure and the die pressing plate (4) are removed, the capping and locking process punching sheet (23) and the bottom layer locking process punching sheet (21) keep in interference fit with the die core rod (5), and the locking of the rotor core is ensured by the friction force between the capping and locking process punching sheet (23) and the die core rod (5).
2. The processing method according to claim 1, wherein press-working the die platen (4) comprises: applying a pressure to the mold platen (4) toward a preset pressure and maintaining the pressure for a preset time.
3. The processing method according to claim 2, characterized in that the thickness of the bottom layer mold-locking process sheet (21) is greater than or equal to the thickness of the rotor sheet (1), the thickness of the capping mold-locking process sheet (23) is greater than or equal to the thickness of the rotor sheet (1), and the thickness of the intermediate mold-locking process sheet (22) is greater than or equal to the thickness of the rotor sheet (1).
4. A high speed motor cast copper rotor core, comprising:
a die bottom plate (3) provided with a die core rod (5), wherein the die core rod (5) is vertically arranged on the die bottom plate (3);
the bottom layer mold locking process punching sheet (21) is arranged on the mold bottom plate (3), the bottom layer mold locking process punching sheet (21) is sleeved on the mold core rod (5), and the bottom layer mold locking process punching sheet (21) is a plastic mold locking process punching sheet;
the rotor punching sheets (1) are arranged on the bottom layer mold locking process punching sheets (21), and the rotor punching sheets (1) are sleeved on the outer side of the mold core rod (5);
the top-sealing mold-locking process punching sheet (23) is used for sealing the top and is arranged above the uppermost rotor punching sheet (1), the upper part of the top-sealing mold-locking process punching sheet (23) is used for arranging a mold pressing plate (4), and the top-sealing mold-locking process punching sheet (23) is a plastic mold-locking process punching sheet;
a plurality of middle mold locking process punching pieces (22) are arranged between the bottom mold locking process punching pieces (21) and the top sealing mold locking process punching pieces (23), the middle mold locking process punching pieces (22) are sleeved on the die core rod (5), the middle mold locking process punching pieces (22) are arranged in a penetrating mode with the rotor punching pieces (1), and the middle mold locking process punching pieces (22) are plastic mold locking process punching pieces;
the capping and locking process punching sheet (23) and the bottom layer locking process punching sheet (21) are arranged under the die pressing plate (4), deformation and inner hole reduction occur under the action of pressure, the inner hole of the capping and locking process punching sheet and the die core rod become interference fit, the pressure is removed, the die pressing plate (4) is removed, the capping and locking process punching sheet (23) and the bottom layer locking process punching sheet (21) keep interference fit with the die core rod (5), and the locking of the rotor core is ensured through friction force between the locking process punching sheet (23) and the die core rod (5).
5. The high-speed motor cast copper rotor core as recited in claim 4 wherein the thickness of the bottom layer mold-locking process sheet (21), the top-capping mold-locking process sheet (23), the intermediate mold-locking process sheet (22) is 0.1mm to 0.5mm greater than the thickness of the rotor sheet (1).
6. The high speed motor cast copper rotor core as recited in claim 4 wherein the bottom layer mold locking process punch (21) comprises an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet, the capping mold locking process punch (23) comprises an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet, and the intermediate mold locking process punch (22) comprises an iron sheet, a stainless steel sheet, an aluminum sheet or a copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711174592.9A CN107707046B (en) | 2017-11-22 | 2017-11-22 | High-speed motor cast copper rotor core and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711174592.9A CN107707046B (en) | 2017-11-22 | 2017-11-22 | High-speed motor cast copper rotor core and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107707046A CN107707046A (en) | 2018-02-16 |
| CN107707046B true CN107707046B (en) | 2024-03-29 |
Family
ID=61185820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711174592.9A Active CN107707046B (en) | 2017-11-22 | 2017-11-22 | High-speed motor cast copper rotor core and processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107707046B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400846B (en) * | 2022-01-24 | 2023-11-24 | 重庆市美庆科技有限公司 | Rotor core manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783667A (en) * | 2004-11-29 | 2006-06-07 | 黑田精工株式会社 | Laminated iron core and its producing method and mould device |
| CN204030899U (en) * | 2014-05-19 | 2014-12-17 | 刘竹旺 | High-slip, super-high slip ratio threephase asynchronous |
| CN105449956A (en) * | 2015-11-27 | 2016-03-30 | 江苏通达动力科技股份有限公司 | Laminating heating tool for T type sectionalized stator punching sheet and operation method |
| CN106451833A (en) * | 2016-08-26 | 2017-02-22 | 卧龙电气集团股份有限公司 | Stator core structure of inner stator motor and manufacturing method thereof |
| CN107332364A (en) * | 2017-07-28 | 2017-11-07 | 安徽美芝制冷设备有限公司 | For the iron core of motor and the motor with it and compressor |
| CN207868882U (en) * | 2017-11-22 | 2018-09-14 | 杭州三相科技有限公司 | High-speed electric expreess locomotive copper casting rotor iron core |
-
2017
- 2017-11-22 CN CN201711174592.9A patent/CN107707046B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783667A (en) * | 2004-11-29 | 2006-06-07 | 黑田精工株式会社 | Laminated iron core and its producing method and mould device |
| CN204030899U (en) * | 2014-05-19 | 2014-12-17 | 刘竹旺 | High-slip, super-high slip ratio threephase asynchronous |
| CN105449956A (en) * | 2015-11-27 | 2016-03-30 | 江苏通达动力科技股份有限公司 | Laminating heating tool for T type sectionalized stator punching sheet and operation method |
| CN106451833A (en) * | 2016-08-26 | 2017-02-22 | 卧龙电气集团股份有限公司 | Stator core structure of inner stator motor and manufacturing method thereof |
| CN107332364A (en) * | 2017-07-28 | 2017-11-07 | 安徽美芝制冷设备有限公司 | For the iron core of motor and the motor with it and compressor |
| CN207868882U (en) * | 2017-11-22 | 2018-09-14 | 杭州三相科技有限公司 | High-speed electric expreess locomotive copper casting rotor iron core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107707046A (en) | 2018-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6064923B2 (en) | Manufacturing method of laminated iron core | |
| US20170237320A1 (en) | Manufacturing method of laminated core and manufacturing device of laminated core | |
| JP2011223844A (en) | Laminating iron core and manufacturing method thereof | |
| CN107707046B (en) | High-speed motor cast copper rotor core and processing method thereof | |
| JP2016002552A (en) | Molding material manufacturing method and molding material thereof | |
| CN113263108B (en) | Progressive press working method | |
| JP2006340491A (en) | Method for manufacturing stator laminated core | |
| JP5494448B2 (en) | Method and apparatus for punching metal plate and method for manufacturing rotary electric iron core | |
| JP2004357349A (en) | Manufacturing method of iron core piece | |
| JP2016005404A (en) | Manufacturing method of laminated core | |
| CN203390069U (en) | One-step formed punching die for hole flanging and riveting | |
| JP5764483B2 (en) | Manufacturing method of laminated iron core and shape of punched punch generated thereby | |
| JP4989877B2 (en) | Manufacturing method of rotor laminated core | |
| JP2015188934A (en) | Punching method and punching mold for thin steel sheet | |
| CN102237728A (en) | Stator structure without stator end plate and pressing ring | |
| JP6248965B2 (en) | Manufacturing method of core of rotating electrical machine | |
| CN218611366U (en) | Clamping plate assembly for convex hull machining and machining assembly | |
| JP5297147B2 (en) | Manufacturing method of magnet mounted rotor core | |
| CN207868882U (en) | High-speed electric expreess locomotive copper casting rotor iron core | |
| KR20140043286A (en) | Manufacturing method and manufacturing apparatus for layered iron core | |
| JP5585343B2 (en) | Stator core manufacturing method | |
| CN114365403A (en) | Method for manufacturing rotor | |
| JP2021072675A (en) | Method of manufacturing motor core | |
| JP4115765B2 (en) | Mold device with pressing support ring | |
| JP2022077759A (en) | Press working 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |