CN110838776A - Buckling point magnetic pole iron core laminating device and iron core laminating method adopting same - Google Patents
Buckling point magnetic pole iron core laminating device and iron core laminating method adopting same Download PDFInfo
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- CN110838776A CN110838776A CN201910908347.9A CN201910908347A CN110838776A CN 110838776 A CN110838776 A CN 110838776A CN 201910908347 A CN201910908347 A CN 201910908347A CN 110838776 A CN110838776 A CN 110838776A
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- oil cylinder
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- 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
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Abstract
The invention relates to a pole core laminating structure of a motor, in particular to a buckling point pole core laminating device and a core laminating method adopting the device. The technical problem that the iron core compaction compactness is not high when the existing motor full-lamination stator iron core is laminated is solved. A pressing plate and a lamination bottom plate are vertically arranged on a base; an axial oil cylinder is horizontally arranged at the position on the same side of the pressurizing plate on the base, the movable end of the axial oil cylinder faces the side of the laminated bottom plate, and the movable end is connected with a pressurizing base plate; a circumferential oil cylinder which is horizontally orthogonal to the axial oil cylinder is also arranged on the base, and a circumferential base plate is connected with the movable end of the circumferential oil cylinder; a side vertical plate is fixed on the base at a position corresponding to the movable end of the circumferential oil cylinder; a radial oil cylinder is vertically fixed on the top plate, and the movable end of the radial oil cylinder faces downwards, is positioned below the upper top plate and is connected with an upper base plate; and a limiting block for limiting the iron core to be laminated is arranged at the position of the laminating space on the base.
Description
Technical Field
The invention relates to a pole core laminating structure of a motor, in particular to a buckling point pole core laminating device and a core laminating process and method adopting the device.
Background
With the development of motor manufacturing at home and abroad and the continuous improvement of user requirements, the motor manufacturing period, low cost, structural reliability and maintainability become the problems which must be paid attention by production enterprises. The iron core manufacturing in the whole motor development process is the key point for controlling the motor manufacturing period and the economy, and the lamination of the iron core is undoubtedly the key point for manufacturing the motor. The technical equipment for laminating the iron core is an important factor for restricting the laminating period and the economical efficiency of the iron core.
At present, a motor for a railway mostly adopts a full-lamination stator core, and a lamination device of core lamination equipment is assembled, pressed and welded to form the motor. The traditional laminating tool for the laminating machine is a standard special tool, namely a product theoretically corresponds to a set of laminating tool for a stator core. Along with the variety of company's products, the tradition is folded and is pressed the frock more and more, and not only frock management pressure is bigger and bigger, and the tradition folds and presses frock manufacturing cycle long moreover, and manufacturing cost is high, can not satisfy company's product cycle short, the many kinds of needs.
Meanwhile, the existing laminating tool for the laminating machine is a fixed core tire, and has the defect that the iron core is easily damaged in the process of taking off the tire from the iron core, so that unnecessary quality and economic loss are caused.
Prior art relating to the invention
In the same industry of domestic and foreign motors, the pole iron core is vertically stacked due to the short iron length (less than 500 mm) of the pole iron core, the inner circle, the outer circle or the iron core slot of the iron core is positioned, and the irregularity and the straightness of the iron core are controlled; the pressurizing mode adopts the existing vertical oil press to pressurize the magnetic pole iron core, and finally a pull rod is welded or fastened by a bolt in a pressure maintaining state, so that the compactness of the iron core is ensured.
The technical problems to be solved by the invention are as follows:
(1) the horizontal device is designed to finally ensure that the pole core with the length of more than 1000mm can meet the condition that the lamination coefficient is more than or equal to 0.98, the irregularity is less than 0.15mm, and the straightness is less than 0.1 mm.
(2) The magnetic pole iron core is alternately pressurized and pressure-maintained in the axial direction, the radial direction and the circumferential direction, the buckling force between the sheets is formed by reasonably utilizing the buckling point distribution structure, and the iron core keeps certain rigidity and compactness under the condition of no pull rod or rivet structure.
(3) The limit size is reasonably designed, and the irregularity and the straightness of the magnetic pole iron core are controlled.
(4) The special device for the horizontal hydraulic system is designed, so that continuous operation is realized, and the efficiency is improved.
Disclosure of Invention
The invention provides a buckling point magnetic pole iron core laminating device, and a laminating process and method adopting the device, aiming at solving the technical problems of excessive tooling and low iron core compaction compactness in the laminating process of the existing motor full-laminated stator iron core.
The buckling point magnetic pole iron core laminating device is realized by adopting the following technical scheme: a buckling point magnetic pole iron core laminating device comprises a base, wherein a pressurizing plate and a laminating bottom plate which are parallel to each other are vertically arranged on the base; an upper top plate is horizontally connected between the pressurizing plate and the laminated bottom plate; an axial oil cylinder is horizontally arranged at the position on the same side of the pressurizing plate on the base, the movable end of the axial oil cylinder faces the side of the laminated bottom plate, and the movable end is connected with a pressurizing base plate; a circumferential oil cylinder which is horizontally orthogonal to the axial oil cylinder is also arranged on the base, and a circumferential base plate is connected with the movable end of the circumferential oil cylinder; a side vertical plate is fixed on the base at a position corresponding to the movable end of the circumferential oil cylinder; a radial oil cylinder is vertically fixed on the top plate, and the movable end of the radial oil cylinder faces downwards, is positioned below the upper top plate and is connected with an upper base plate; a laminating space is formed among the upper backing plate, the circumferential backing plate, the side vertical plates, the laminated bottom plate and the pressurizing backing plate; and a limiting block for limiting the iron core to be laminated is arranged at the position of the laminating space on the base.
The lamination of the magnetic pole iron core is mostly carried out by adopting a vertical oil press. The pressing principle of the vertical oil press is that the magnetic pole iron core is pressed by an upper pressing type (or a lower jacking type) through the reciprocating motion of a hydraulic cylinder, and all accessories of the iron core are assembled and fixed in a pressing state.
The magnetic pole iron core structure with the length of more than 1000mm is long and thin, the iron core is arched due to vertical laminating, the opening moment required by hydraulic equipment is large, and the tooling is complex. By adopting the mode of combining the horizontal lamination and the horizontal hydraulic system, the lamination of the slender magnetic pole iron core can be effectively completed.
Furthermore, the limiting block is positioned between the circumferential positioning surface and the circumferential pressurizing surface of the magnetic pole iron core and below the magnetic pole iron core; the size of the limiting block is 0.02 mm-0.04 mm larger than that of the magnetic pole iron core.
Further, the base is made of a steel plate with the thickness of 100mm, and is processed after heat treatment to be used as a reference surface for whole lamination.
Furthermore, the circumferential oil cylinder and the radial oil cylinder are respectively arranged in a one-through three-horizontal type oil cylinder layout mode.
Designing a horizontal type laminating tool: the base of the laminating tool adopts a steel plate with the thickness of 100mm, the steel plate is processed after heat treatment and is used as a whole laminating reference surface, the laminating positioning surface and the side positioning surface are fixed on the base, and the magnetic pole iron core is pressurized and maintained in an axial direction, a radial direction and a circumferential direction in an alternating and stepped mode.
Design of a limiting block: and limiting blocks are designed between the circumferential positioning surface and the circumferential pressurizing surface of the magnetic pole iron core and below the magnetic pole iron core, the size of each limiting block is slightly larger than that of the magnetic pole iron core (0.02-0.04 mm), and the unevenness and the straightness of the iron core are controlled in the pressurizing process.
Designing a horizontal oil cylinder: the circumferential pressing surface and the radial pressing surface are respectively arranged in a one-through three-horizontal type oil cylinder mode, and meanwhile, an oil cylinder guide device is additionally arranged to pressurize the circumferential surface and the radial end surface of the iron core, so that the pressurizing uniformity is ensured while the pressure is respectively controlled; the axial pressure surface is pressurized by adopting a long-stroke and large-tonnage oil cylinder and matching with pressurizing cushion blocks with different lengths, the magnetic pole iron core is pressurized in a sectional mode (once pressurizing every 200 mm), the fastening point of the magnetic pole iron core is tightly combined, the compactness of the iron core is ensured, and the laminating coefficient is controlled to be 0.98-0.983.
The magnetic pole iron core laminating method is realized by adopting the following technical scheme: a pole core laminating method comprises the following steps: placing an iron core to be laminated in a laminating space, limiting by a limiting block, and pressurizing and maintaining the magnetic pole iron core in an axial direction, a radial direction and a circumferential direction alternately in a step mode;
designing the buckling points of the magnetic pole punching sheet: through rationally distributed knot point and design knot point structure on magnetic pole punching piece (0.5 mm silicon steel sheet), magnetic pole iron core folds and presses the completion back, relies on punching piece self knot point, need not to rely on fastening pull rod or welding, just can guarantee the closely knit degree of magnetic pole iron core.
The technical scheme of the invention has the following beneficial effects:
on the basis of absorbing professional technologies at home and abroad, the project combines the characteristics of the ultra-long buckling point type magnetic pole iron core, changes vertical laminating into horizontal laminating, is feasible from a technical angle through a combined structure form of segmented pressurization of three groups of oil cylinders and positioning of limiting blocks, and has certain scientific and innovative value and economic benefit.
Although the punching sheet buckling point structure is widely applied to manufacturing of miniature and small motors, the punching sheet buckling point structure is also applied to megawatt large motors for the first time, and the technical breakthrough brings improvement and innovation of manufacturing of megawatt motor cores and is gradually popularized and applied.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a side view of the structure of fig. 1.
The device comprises a base 1, a circumferential oil cylinder 2, a circumferential backing plate 3, a side vertical plate 4, a limiting block 5, a laminated bottom plate 6, an upper top plate 7, a radial oil cylinder 8, an upper backing plate 9, a pressurizing plate 10, an axial oil cylinder 11, a pressurizing backing plate 12 and a guide block 13.
Detailed Description
A buckling point magnetic pole iron core laminating device comprises a base 1, wherein a pressurizing plate 10 and a laminating bottom plate 6 which are parallel to each other are vertically arranged on the base 1; an upper top plate 7 is horizontally connected between the pressurizing plate 10 and the laminated bottom plate 6; an axial oil cylinder 11 is horizontally arranged on the base 1 at the same side of the pressurizing plate 10, the movable end of the axial oil cylinder 11 faces the side of the laminated bottom plate 6, and the movable end is connected with a pressurizing base plate 12; the base 1 is also provided with a circumferential oil cylinder 2 which is horizontally orthogonal to the axial oil cylinder 11, and the movable end of the circumferential oil cylinder 2 is connected with a circumferential backing plate 3; a side vertical plate 4 is fixed on the base at a position corresponding to the movable end of the circumferential oil cylinder 2; a radial oil cylinder 8 is vertically fixed on the top plate, and the movable end of the radial oil cylinder 8 faces downwards, is positioned below the upper top plate and is connected with an upper base plate 9; a laminating space is formed among the upper backing plate 9, the circumferential backing plate 3, the side vertical plates 4, the laminated bottom plate 6 and the pressurizing backing plate 12; a limiting block 5 for limiting the iron core to be laminated is arranged at the position of the laminating space on the base 1.
A guide block 13 is fixed on the base, and the circumferential cushion block 3 is guided by the guide block 13.
The limiting block 5 is positioned between the circumferential positioning surface and the circumferential pressurizing surface of the magnetic pole iron core and below the magnetic pole iron core; the size of the limiting block 5 is 0.02 mm-0.04 mm larger than that of the magnetic pole iron core.
The base is made of a steel plate with the thickness of 100mm, and is processed after heat treatment to be used as a reference surface of the whole lamination.
The circumferential oil cylinder and the radial oil cylinder are respectively arranged in a one-through three-horizontal type oil cylinder mode.
A pole core laminating method is realized by the buckling point pole core laminating device, and comprises the following steps: placing an iron core to be laminated in a laminating space, limiting by a limiting block, and pressurizing and maintaining the magnetic pole iron core in an axial direction, a radial direction and a circumferential direction alternately in a step mode;
designing the buckling points of the magnetic pole punching sheet: through rationally distributed knot point and design knot point structure on magnetic pole punching sheet, magnetic pole iron core folds and presses the back of accomplishing, relies on punching sheet self knot point, need not to rely on fastening pull rod or welding, just can guarantee the closely knit degree of magnetic pole iron core.
Examples
Megawatt railway freight main generator and wind driven generator are key items of our company, and iron core lamination is one of key points of manufacturing of the motors. The invention is applied to the research, development, upgrading and reconstruction of the motor, successfully completes the lamination of the iron core, reduces the cost and the manufacturing period, and improves the maintainability.
The technical key points and the protection points of the invention are as follows: horizontal type laminating structure, iron core positioning mode, axial process pressure determination and buckling point structure.
(1) Horizontal pressure-superposed structure: the steel plate after aging treatment is used as a base datum plane and a lamination positioning plane to form an XYZ three-dimensional positioning datum, and the magnetic pole iron core is pressurized and pressure-maintained in an axial direction, a radial direction and a circumferential direction alternately in a stepped manner, so that the comprehensive requirements of the lamination coefficient, the irregularity and the straightness are met.
(2) The iron core positioning mode: designing an irregularity positioning device on the basis of a reference positioning surface, reasonably prepressing before buckling punching sheets, performing three-dimensional analysis and sorting alignment on the punching sheets, and finally realizing final positioning in the last step by using a limit block with the size larger than that of the magnetic pole punching sheet (0.02-0.04 mm).
(3) Axial process pressure determination: under the premise of the requirement of theoretical residual compressive stress of the iron core, the final iron core pressure is determined by considering the joint force formed by the joint speed of each buckling point and the resistance formed by radial and circumferential pre-pressing positioning and punching.
(4) And (3) buckling points of the magnetic pole punching sheet: the fastening points are reasonably distributed on the magnetic pole stamped sheet, and after the magnetic pole iron core is laminated and pressed, the fastening points of the stamped sheet are relied on, and the compactness of the magnetic pole iron core can be ensured without relying on a fastening pull rod or welding.
Claims (9)
1. A buckling point magnetic pole iron core laminating device comprises a base (1) and is characterized in that a pressurizing plate (10) and a laminating bottom plate (6) which are parallel to each other are vertically arranged on the base (1); an upper top plate (7) is horizontally connected between the pressurizing plate (10) and the laminated bottom plate (6); an axial oil cylinder (11) is horizontally arranged on the base (1) at the same side of the pressurizing plate (10), the movable end of the axial oil cylinder (11) faces the side of the laminated bottom plate (6), and the movable end is connected with a pressurizing base plate (12); a circumferential oil cylinder (2) which is horizontally orthogonal to the axial oil cylinder (11) is also arranged on the base (1), and a circumferential cushion plate (3) is connected with the movable end of the circumferential oil cylinder (2); a side vertical plate (4) is fixed on the base (1) at a position corresponding to the movable end of the circumferential oil cylinder (2); a radial oil cylinder (8) is vertically fixed on the upper top plate (7), and the movable end of the radial oil cylinder (8) faces downwards, is positioned below the upper top plate (7) and is connected with an upper backing plate (9); a laminating space is formed among the upper backing plate (9), the circumferential backing plate (3), the side vertical plate (4), the laminated bottom plate (6) and the pressurizing backing plate (12); and a limiting block (5) for limiting the iron core to be laminated is arranged at the position of the laminating space on the base (1).
2. A pinch point pole core lamination device according to claim 1, wherein a guide block (13) is fixed to the base (1), and the circumferential pad (3) is guided by the guide block (13).
3. The pinch point pole core lamination device according to claim 1 or 2, wherein the limiting block (5) is positioned in the middle of the circumferential positioning surface and the circumferential pressurizing surface of the pole core and below the pole core; the size of the limiting block (5) is 0.02 mm-0.04 mm larger than that of the magnetic pole iron core.
4. The salient pole lamination apparatus according to claim 1 or 2, wherein the base (1) is made of a steel plate with a thickness of 100mm, and is processed after heat treatment as a reference surface for the entire lamination.
5. A pinch point pole core lamination assembly as claimed in claim 3 wherein the base (1) is formed from 100mm thick steel plate and is heat treated and then machined to provide a reference plane for the entire lamination.
6. The buckling point magnetic pole core laminating device according to claim 1 or 2, wherein the circumferential oil cylinder (2) and the radial oil cylinder (8) are respectively arranged in a one-through three-horizontal type oil cylinder mode.
7. The pinch point pole core lamination device according to claim 3, wherein the circumferential cylinder (2) and the radial cylinder (8) are respectively arranged in a one-way three-horizontal cylinder layout manner.
8. The pinch point pole core lamination device according to claim 5, wherein the circumferential cylinder (2) and the radial cylinder (8) are respectively arranged in a one-way three-horizontal cylinder layout mode.
9. A pole lamination method implemented by the pinch-point pole lamination apparatus according to any one of claims 1-8, comprising the steps of: placing an iron core to be laminated in a laminating space, limiting by a limiting block, and pressurizing and maintaining the magnetic pole iron core in an axial direction, a radial direction and a circumferential direction alternately in a step mode;
designing the buckling points of the magnetic pole punching sheet: through rationally distributed knot point and design knot point structure on magnetic pole punching sheet, magnetic pole iron core folds and presses the back of accomplishing, relies on punching sheet self knot point, need not to rely on fastening pull rod or welding, just can guarantee the closely knit degree of magnetic pole iron core.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910908347.9A CN110838776B (en) | 2019-09-25 | 2019-09-25 | Buckling point magnetic pole iron core laminating device and iron core laminating method adopting same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910908347.9A CN110838776B (en) | 2019-09-25 | 2019-09-25 | Buckling point magnetic pole iron core laminating device and iron core laminating method adopting same |
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| CN110838776A true CN110838776A (en) | 2020-02-25 |
| CN110838776B CN110838776B (en) | 2021-04-02 |
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| CN201910908347.9A Active CN110838776B (en) | 2019-09-25 | 2019-09-25 | Buckling point magnetic pole iron core laminating device and iron core laminating method adopting same |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3670407A (en) * | 1970-03-09 | 1972-06-20 | Gen Motors Corp | Method of reducing iron losses in the stator cores of alternating current machines |
| CN104810989A (en) * | 2014-01-26 | 2015-07-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator iron core lamination tool |
| CN106451943A (en) * | 2016-11-26 | 2017-02-22 | 中船重工电机科技股份有限公司 | Self-adhered silicon steel sheet overlying assembly |
| CN106849539A (en) * | 2017-03-21 | 2017-06-13 | 苏州工业职业技术学院 | A kind of Simple stator iron core laminated mold |
| CN208174491U (en) * | 2018-06-10 | 2018-11-30 | 常州神力电机股份有限公司 | A kind of self-adhesive rotor core laminating tool |
| CN109120120A (en) * | 2018-10-30 | 2019-01-01 | 永济优耐特绝缘材料有限责任公司 | A kind of rotor magnetic pole box laminates moulding process |
| CN109217583A (en) * | 2018-08-25 | 2019-01-15 | 中船重工电机科技股份有限公司 | Salient magnetic pole iron core laminating tool and laminating method on rotor |
| CN209170181U (en) * | 2018-11-20 | 2019-07-26 | 中车永济电机有限公司 | The vertical dress mould of adjustable electric machine stand |
-
2019
- 2019-09-25 CN CN201910908347.9A patent/CN110838776B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3670407A (en) * | 1970-03-09 | 1972-06-20 | Gen Motors Corp | Method of reducing iron losses in the stator cores of alternating current machines |
| CN104810989A (en) * | 2014-01-26 | 2015-07-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator iron core lamination tool |
| CN106451943A (en) * | 2016-11-26 | 2017-02-22 | 中船重工电机科技股份有限公司 | Self-adhered silicon steel sheet overlying assembly |
| CN106849539A (en) * | 2017-03-21 | 2017-06-13 | 苏州工业职业技术学院 | A kind of Simple stator iron core laminated mold |
| CN208174491U (en) * | 2018-06-10 | 2018-11-30 | 常州神力电机股份有限公司 | A kind of self-adhesive rotor core laminating tool |
| CN109217583A (en) * | 2018-08-25 | 2019-01-15 | 中船重工电机科技股份有限公司 | Salient magnetic pole iron core laminating tool and laminating method on rotor |
| CN109120120A (en) * | 2018-10-30 | 2019-01-01 | 永济优耐特绝缘材料有限责任公司 | A kind of rotor magnetic pole box laminates moulding process |
| CN209170181U (en) * | 2018-11-20 | 2019-07-26 | 中车永济电机有限公司 | The vertical dress mould of adjustable electric machine stand |
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