CN110752719A - Medium-sized shielding motor stator core pressing processing technology - Google Patents
Medium-sized shielding motor stator core pressing processing technology Download PDFInfo
- Publication number
- CN110752719A CN110752719A CN201911035131.2A CN201911035131A CN110752719A CN 110752719 A CN110752719 A CN 110752719A CN 201911035131 A CN201911035131 A CN 201911035131A CN 110752719 A CN110752719 A CN 110752719A
- Authority
- CN
- China
- Prior art keywords
- pressure
- oil press
- mandrel
- stator core
- assembling
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to a stator core stacking and processing technology of a medium-sized shielding motor, which comprises the following steps of: removing wrinkles, oil stains and corrosion stamped sheets; placing the bracket 6: the parallelism of the instrument adjusting support 6 relative to the oil press platform is not larger than 0.02mm, the mandrel 1 is placed on the support 6, the perpendicularity of the mandrel 1 relative to the support 6 is checked, and the lower locking nut 5 is assembled on the mandrel 1; and (3) positioning and punching a core shaft, assembling a nut in a compression state for fixing after the core shaft is assembled to the drawing size, and processing the outer circle and inner circle rabbet of the iron core on a mould. The invention can realize that the stator core is pressed and processed on the same mould, ensures the coaxiality and avoids the influence of the reference change on the coaxiality of the core after the use of a tire.
Description
The technical field is as follows:
the invention relates to a medium-sized shielding motor stator core pressing processing technology.
Background art:
with the continuous improvement of the safety of the nuclear power plant, a primary loop reactor coolant pump requires maintenance-free, leakage-free and long service life, and a medium-sized shielding motor with the characteristic is widely used. In order to reduce the water friction loss of the internal shielding sleeve, the stator core is hot-assembled in the shell, the stator shielding sleeve is supported by the supporting cylinder, the outer circle, the inner circle spigot and the inner circle concentricity of the stator core after hot-assembly are ensured, the fixed assembling and pressing mould is adopted for assembling and pressing, and the assembling and pressing mould is utilized for processing, so that the supporting strength of the stator shielding sleeve is improved, and the service life is prolonged. The traditional stator core laminating method is that a stator punching sheet is firstly loaded and pressed on a split type press tire, and a turning mandrel is assembled for processing after the tire is removed. According to the method, the turning mandrel is assembled after the half-type press tire retreating and splitting is carried out, and the turning mandrel and the stator core need to have enough clearance for assembly, so that the clearance of the mandrel exceeds the alignment precision, and the precision required by a drawing cannot be ensured. In order to ensure that the stator core of the shielding motor can be normally laminated and processed, a new pressing and processing technology is required to be adopted.
The invention content is as follows:
the invention relates to a stator core stacking and processing technology of a medium-sized shielding motor, which realizes that stator core stacking and processing are carried out on the same mould, ensures the coaxiality and avoids the influence of the reference change after a tyre is used on the coaxiality of the core. The scheme of the invention is as follows: the medium-sized shielding motor stator core stacking and processing technology comprises the following steps:
a) selecting the stator punching sheet: removing wrinkles, oil stains and corrosion stamped sheets;
b) placing the bracket 6: the parallelism of the instrument adjusting support 6 relative to the oil press platform is not larger than 0.02mm, the mandrel 1 is placed on the support 6, the perpendicularity of the mandrel 1 relative to the support 6 is checked, and the lower locking nut 5 is assembled on the mandrel 1;
c) assembling a cleaned lower prepressing plate 7 and a lower tooth pressing plate 8 on the mandrel 1;
d) assembling a first punched sheet, adjusting a lower tooth pressing plate 8 to align the excircle of the punched sheet with the excircle and the notch of the lower tooth pressing plate 8, and conducting blunt on the sharp edge of the contact surface of the punched sheet and the lower tooth pressing plate 8 before assembly;
e) stacking the laminations according to the placement sequence of the punching sheets, uniformly inserting four groove-shaped bars into the laminations with the height of 20mm for positioning, shaping each lamination with the thickness of 10mm, placing a bearing plate 3 on the laminations with the height of 70-80 mm, opening the laminated stator core 4 to a position below an oil press, prepressing, wherein the pressure of the oil press is set to be 18.5T, the pressure of the oil press is applied by the oil press for 18.5T, maintaining for 10min, then releasing the pressure of the oil press, repeatedly applying the pressure of the oil press for 18.5T for three times, maintaining for 10min, and then releasing the pressure of the oil press; the laminated stator core 4 is driven out of an oil press, a bearing plate is removed, the following processes are repeatedly carried out, punching sheets are laminated, each lamination is shaped by 10mm, the bearing plate 3 is placed at the height of each lamination of 70-80 mm, the laminated stator core 4 is driven under the oil press for prepressing, the prepressing process is that the pressure of the oil press is set to be 18.5T, the oil press applies pressure to be 18.5T, the pressure is maintained for 10min, then the pressure of the oil press is released, the pressure of the oil press is repeatedly applied to be 18.5T for three times, the pressure is maintained for 10min, and then the pressure of the oil press is released until the height reaches the drawing requirement;
f) assembling an upper tooth pressing plate 9 and an upper prepressing plate 10: opening the stator iron core 4 to the position below an oil press, setting the pressure of the oil press to be 18.5T, applying the pressure of 18.5T to the stator iron core by the oil press, assembling the compression nut 2 on the mandrel under the state of maintaining the pressure of 18.5T, screwing the compression nut 2 by 50N.M torque, attaching the compression nut 2 to the upper tooth pressing plate 9, and releasing the pressure of the oil press;
g) assembling rotary lifting rings at two ends of the mandrel 1, lifting the mandrel 1 to a horizontal state by using a crane, and transferring to a lathe;
h) install stator core 4 on horizontal lathe, within 0.01mm according to the alignment of 1 both ends excircle of dabber, processing 4 excircles of stator core and 4 interior round rabbets of stator core, the size needs to be measured through the middle hole of dabber 1.
The invention has the technical effects that:
the invention achieves the aim of concentricity of the inner circle of the stator core, the outer circle of the stator core and the spigot of the inner circle of the stator core by changing the conventional stator core loading and pressing and stator core processing modes, meets the use requirements of matching the outer circle of the stator core with a shell, matching the spigot of the stator core with a supporting sleeve and supporting a stator shielding sleeve by the inner circle, and gets rid of the risks of failure of the stator core of a shell heat sleeve and difficult welding of the stator shielding sleeve after assembly due to the non-concentricity of the inner circle of the stator core, the outer circle of the stator core and the spigot of the inner circle of the stator; according to a conventional mode, an expansion mandrel is used for stator core stacking, the expansion mandrel is poor in hoisting stability and cannot be used as a tire, the tire is assembled after the stator core is required to be withdrawn from the mandrel to process the outer circle spigot and the inner circle spigot of the stator core, the mode is not only time-consuming, but also the final processing precision is reduced after the benchmark is changed due to the replacement of the tire, finally, the stator core of a shell heat sleeve is generally failed, and the welding of a stator shielding sleeve is difficult, and under the condition, a new stator core stacking and processing process must be searched for to meet the product use performance;
in view of the technical scheme, a process method of integrating stator core lamination and machining is adopted, simulation piece verification is carried out, final size measurement is carried out, and a new process of integrating stator core lamination and machining is determined through exploration. The stator core stacking and processing technology of the medium-sized shielding motor is verified on simulation pieces with similar sizes, and is applied to multiple products, so that the using effect is good, and the expected effect of the products is achieved.
Description of the drawings:
fig. 1 is a schematic view showing the completion of stator core assembling.
Fig. 2 is a schematic view of stator core processing.
Wherein: the stator core pressing device comprises a core shaft 1, a locking nut 2, a bearing plate 3, a stator core 4, a compression nut 5, a support 6, a lower pressing plate 7, a lower tooth pressing plate 8, an upper tooth pressing plate 9 and an upper pressing plate 10.
The specific implementation mode is as follows:
as shown in fig. 1, a stator core stacking and processing process of a medium-sized shielding motor comprises the following steps:
a) selecting the stator punching sheet: removing wrinkles, oil stains and corrosion stamped sheets;
b) placing the bracket 6: the parallelism of the instrument adjusting support 6 relative to the oil press platform is not larger than 0.02mm, the mandrel 1 is placed on the support 6, the perpendicularity of the mandrel 1 relative to the support 6 is checked, and the lower locking nut 5 is assembled on the mandrel 1;
c) assembling a cleaned lower prepressing plate 7 and a lower tooth pressing plate 8 on the mandrel 1;
d) assembling a first punched sheet, adjusting a lower tooth pressing plate 8 to align the excircle of the punched sheet with the excircle and the notch of the lower tooth pressing plate 8, and conducting blunt on the sharp edge of the contact surface of the punched sheet and the lower tooth pressing plate 8 before assembly;
e) stacking the laminations according to the placement sequence of the punching sheets, uniformly inserting four groove-shaped bars into the laminations with the height of 20mm for positioning, shaping each lamination with the height of 10mm, placing a bearing plate 3 on the laminations with the height of 70-80 mm, opening the laminated stator core 4 to a position below an oil press for prepressing as shown in figure 2, wherein the prepressing process is to set the pressure of the oil press to be 18.5T, apply the pressure of the oil press to be 18.5T, maintain the pressure for 10min, release the pressure of the oil press, repeat the application of the pressure of the oil press for 18.5T for three times, maintain the pressure for 10min and then release the pressure of the oil press; the laminated stator core 4 is driven out of an oil press, a bearing plate is removed, the following processes are repeatedly carried out, punching sheets are laminated, each lamination is shaped by 10mm, the bearing plate 3 is placed at the height of each lamination of 70-80 mm, the laminated stator core 4 is driven under the oil press for prepressing, the prepressing process is that the pressure of the oil press is set to be 18.5T, the oil press applies pressure to be 18.5T, the pressure is maintained for 10min, then the pressure of the oil press is released, the pressure of the oil press is repeatedly applied to be 18.5T for three times, the pressure is maintained for 10min, and then the pressure of the oil press is released until the height reaches the drawing requirement;
f) assembling an upper tooth pressing plate 9 and an upper prepressing plate 10: opening the stator iron core 4 to the position below an oil press, setting the pressure of the oil press to be 18.5T, applying the pressure of 18.5T to the stator iron core by the oil press, assembling the compression nut 2 on the mandrel under the state of maintaining the pressure of 18.5T, screwing the compression nut 2 by 50N.M torque, attaching the compression nut 2 to the upper tooth pressing plate 9, and releasing the pressure of the oil press;
g) assembling rotary lifting rings at two ends of the mandrel 1, lifting the mandrel 1 to a horizontal state by using a crane, and transferring to a lathe;
h) install stator core 4 on horizontal lathe, within 0.01mm according to the alignment of 1 both ends excircle of dabber, processing 4 excircles of stator core and 4 interior round rabbets of stator core, the size needs to be measured through the middle hole of dabber 1.
Claims (1)
1. A stator core stacking and processing technology of a medium-sized shielding motor is characterized in that: the method comprises the following steps:
a) selecting the stator punching sheet: removing wrinkles, oil stains and corrosion stamped sheets;
b) placing the bracket (6): the parallelism of the instrument adjusting support (6) relative to the oil press platform is not more than 0.02mm, the mandrel (1) is placed on the support (6), the verticality of the mandrel (1) relative to the support (6) is checked, and the lower locking nut (5) is assembled on the mandrel (1);
c) assembling a cleaned lower prepressing plate (7) and a lower tooth pressing plate (8) on a mandrel (1);
d) assembling a first punched sheet, adjusting a lower tooth pressing plate (8) to align the excircle of the punched sheet with the excircle and the notch of the lower tooth pressing plate (8), and conducting blunt on the sharp edge of the contact surface of the punched sheet and the lower tooth pressing plate (8) before assembly;
e) stacking the laminations according to the placement sequence of the punching sheets, uniformly inserting four groove-shaped bars into the laminations with the height of 20mm for positioning, shaping each lamination with the height of 10mm, placing a bearing plate (3) on the laminations with the height of 70-80 mm, opening the laminated stator core (4) to a position below an oil press, prepressing the stator core, wherein the pressure of the oil press is set to be 18.5T, the pressure of the oil press is applied by the oil press for 18.5T, maintaining the pressure for 10min, releasing the pressure of the oil press, repeating the steps of applying the pressure of the oil press for 18.5T, maintaining the pressure for 10min, and then releasing the pressure of the oil press; the laminated stator iron core (4) is driven out of an oil press, a bearing plate is removed, the following processes are repeatedly carried out, the punching sheets are stacked, each stacking is 10mm for shaping, the bearing plate (3) is placed at the height of 70-80 mm of each stacked punching sheet, the laminated stator iron core (4) is driven to the position below the oil press for prepressing, the prepressing process is that the pressure of the oil press is set to be 18.5T, the oil press applies the pressure for 18.5T, the pressure is maintained for 10min, then the pressure of the oil press is released, the pressure of the oil press is repeatedly applied for 18.5T and maintained for 10min for three times, and then the pressure of the oil press is released until the height reaches the drawing requirement;
f) assembling an upper tooth pressing plate (9) and an upper prepressing plate (10): opening the stator iron core (4) to a hydraulic press, setting the pressure of the hydraulic press to be 18.5T, applying the pressure of 18.5T to the stator iron core by the hydraulic press, assembling the compression nut (2) on the mandrel under the state of maintaining the pressure of 18.5T, screwing the compression nut (2) with 50N.M torque, attaching the compression nut (2) to the upper tooth pressing plate (9), and releasing the pressure of the hydraulic press;
g) assembling rotary lifting rings at two ends of the mandrel (1), lifting the mandrel (1) to a horizontal state by using a crane, and transferring the mandrel to a lathe;
h) the stator core (4) is installed on a horizontal lathe, the excircle alignment at the two ends of the mandrel (1) is within 0.01mm, the excircle of the stator core (4) and the inner circle rabbet of the stator core (4) are processed, and the size needs to be measured through a middle hole of the mandrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035131.2A CN110752719B (en) | 2019-10-29 | 2019-10-29 | Medium-sized shielding motor stator core pressing processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035131.2A CN110752719B (en) | 2019-10-29 | 2019-10-29 | Medium-sized shielding motor stator core pressing processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110752719A true CN110752719A (en) | 2020-02-04 |
| CN110752719B CN110752719B (en) | 2021-03-09 |
Family
ID=69280658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911035131.2A Active CN110752719B (en) | 2019-10-29 | 2019-10-29 | Medium-sized shielding motor stator core pressing processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110752719B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114932239A (en) * | 2022-06-01 | 2022-08-23 | 安徽皖南新维电机有限公司 | Process for machining rabbets at two ends of motor stator base |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185427A (en) * | 2011-05-05 | 2011-09-14 | 大连电机集团有限公司 | Torque motor stator core laminating tyre |
| CN102962678A (en) * | 2012-11-23 | 2013-03-13 | 永济新时速电机电器有限责任公司 | Lamination-assembly-welding integrated device for laminated frames |
| CN203317339U (en) * | 2013-07-12 | 2013-12-04 | 湘潭电机股份有限公司 | Hot sleeve pressurizing device of shaft and sleeve |
| KR20140063202A (en) * | 2012-11-16 | 2014-05-27 | 현대자동차주식회사 | Rotor shaft of drive motor having partially stationary fit type keyway and rotor core assembly using the same |
| CN203645499U (en) * | 2013-12-27 | 2014-06-11 | 北京京仪敬业电工科技有限公司 | Permanent magnet motor spliced stator press-fit mould |
| CN204928505U (en) * | 2015-09-18 | 2015-12-30 | 江苏吉泓达电机科技有限公司 | Motor stator core laminating and quick expansion device |
| CN108242871A (en) * | 2016-12-26 | 2018-07-03 | 江苏通达动力科技股份有限公司 | A kind of press-loading apparatus of aerogenerator stator iron core |
| CN208001213U (en) * | 2018-03-26 | 2018-10-23 | 江西泰豪军工集团有限公司 | Repeatedly pressure tooling for permanent magnet generator inner-stator iron core punching |
| CN108857288A (en) * | 2018-08-06 | 2018-11-23 | 上海电气集团上海电机厂有限公司 | The method of 1E grades of nuclear power emergency diesel dynamo stator cores and base with processing |
| CN109665439A (en) * | 2019-02-02 | 2019-04-23 | 睿贞（上海）自动化科技有限公司 | A kind of tooling welded and lifted for keel type electric machine iron core |
| CN209358394U (en) * | 2019-02-19 | 2019-09-06 | 福建凯威斯发电机有限公司 | A kind of stacked stator core pressure swollen tire structure of monoblock type |
-
2019
- 2019-10-29 CN CN201911035131.2A patent/CN110752719B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185427A (en) * | 2011-05-05 | 2011-09-14 | 大连电机集团有限公司 | Torque motor stator core laminating tyre |
| KR20140063202A (en) * | 2012-11-16 | 2014-05-27 | 현대자동차주식회사 | Rotor shaft of drive motor having partially stationary fit type keyway and rotor core assembly using the same |
| CN102962678A (en) * | 2012-11-23 | 2013-03-13 | 永济新时速电机电器有限责任公司 | Lamination-assembly-welding integrated device for laminated frames |
| CN203317339U (en) * | 2013-07-12 | 2013-12-04 | 湘潭电机股份有限公司 | Hot sleeve pressurizing device of shaft and sleeve |
| CN203645499U (en) * | 2013-12-27 | 2014-06-11 | 北京京仪敬业电工科技有限公司 | Permanent magnet motor spliced stator press-fit mould |
| CN204928505U (en) * | 2015-09-18 | 2015-12-30 | 江苏吉泓达电机科技有限公司 | Motor stator core laminating and quick expansion device |
| CN108242871A (en) * | 2016-12-26 | 2018-07-03 | 江苏通达动力科技股份有限公司 | A kind of press-loading apparatus of aerogenerator stator iron core |
| CN208001213U (en) * | 2018-03-26 | 2018-10-23 | 江西泰豪军工集团有限公司 | Repeatedly pressure tooling for permanent magnet generator inner-stator iron core punching |
| CN108857288A (en) * | 2018-08-06 | 2018-11-23 | 上海电气集团上海电机厂有限公司 | The method of 1E grades of nuclear power emergency diesel dynamo stator cores and base with processing |
| CN109665439A (en) * | 2019-02-02 | 2019-04-23 | 睿贞（上海）自动化科技有限公司 | A kind of tooling welded and lifted for keel type electric machine iron core |
| CN209358394U (en) * | 2019-02-19 | 2019-09-06 | 福建凯威斯发电机有限公司 | A kind of stacked stator core pressure swollen tire structure of monoblock type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114932239A (en) * | 2022-06-01 | 2022-08-23 | 安徽皖南新维电机有限公司 | Process for machining rabbets at two ends of motor stator base |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110752719B (en) | 2021-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1592109B1 (en) | Apparatus and method for the installation of a pre-assembled stator core | |
| CN102013767A (en) | Inner expansion pressing mould of motor stator core | |
| CN110752719B (en) | Medium-sized shielding motor stator core pressing processing technology | |
| EP2200159A1 (en) | Method for manufacturing and transport of a generator stator core | |
| CN105429386A (en) | Overlaying buckling sheet tooling | |
| CN112072868B (en) | Method for manufacturing iron core lamination | |
| CN105162293A (en) | Motor stator core processing method | |
| CN114888601B (en) | Shell piece center positioning tool and zero point positioning device comprising same | |
| CN104038000B (en) | Dismantled and assembled copper cage rotor core laminates hot cover process | |
| CN100430168C (en) | Process for producing axial magnetic bearing structure | |
| CN108809010B (en) | Stator core external press-fitting device and stator core external press-fitting equipment | |
| CN104526421A (en) | Expander positioning device for machining generator casing | |
| CN112109010A (en) | Motor is folded and is pressed and car processing reducing mould device | |
| CN102468723A (en) | Method and apparatus for compression of lamination stack for dynamoelectric machine | |
| CN213857939U (en) | Automatic press fitting device for assembling brake caliper clamping sleeve | |
| CN113241905A (en) | Thermal sleeve device and method for shafting punching sheet and air blower | |
| CA2799033A1 (en) | Rotating electrical machine | |
| CN117277705B (en) | Manufacturing process of copper bar rotor core of high-voltage motor | |
| CN206559207U (en) | A kind of Simple stator iron core laminated mold | |
| CN215682080U (en) | Thermal sleeve device and air-blower of shafting punching | |
| CN214101141U (en) | Sectional type stator winding iron core concatenation fixing device | |
| CN201950433U (en) | Internal expanding pressing clamping fixture of stator core of motor | |
| CN110614501A (en) | Disassembly and assembly method and tool for overhauling large hydraulic dynamometer | |
| CN216356387U (en) | Split detachable type assembling, pressing and machining device for nacelle motor stator core | |
| CN208451497U (en) | A kind of motor shaft pressure key jig |
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 |