CN112275893A - Method for calculating range of punching number of single-groove punching die of motor stator punching sheet - Google Patents
Method for calculating range of punching number of single-groove punching die of motor stator punching sheet Download PDFInfo
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- CN112275893A CN112275893A CN202011044206.6A CN202011044206A CN112275893A CN 112275893 A CN112275893 A CN 112275893A CN 202011044206 A CN202011044206 A CN 202011044206A CN 112275893 A CN112275893 A CN 112275893A
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- punched
- shearing
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- edge
- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/22—Notching the peripheries of circular blanks, e.g. laminations for dynamo-electric machines
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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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
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
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- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a method for calculating the range of the notching number of a single-groove punching die of a motor stator punching sheet, belongs to the technical field of stator punching sheet notching, and solves the problems that the performance of a motor is reduced due to the improper groove number and the like. The solution is as follows: a method for calculating the range of the number of grooves which can be punched in a single groove punching die of a motor stator punching sheet is characterized in that the number of grooves which can be punched is set to be n, according to the number Q of stator sheet grooves which is set in advance, the condition that the range of the shearing edge at the left end of a shearing punching head falls between 1 groove notch at the left side is considered firstly, the condition that the range of the shearing edge at the right end of the shearing punching head falls between 1 groove notch at the right side is considered, finally, the most appropriate range is obtained through comparison, the number of grooves in the range is obtained, the shearing edge of the shearing punching head falls within the range of stator groove-shaped punching.
Description
Technical Field
The invention belongs to the technical field of stator punching groove punching, and particularly relates to a method for calculating the range of the punching groove number of a single-groove punching die of a motor stator punching plate.
Background
In the motor manufacturing industry, the stator punching sheet of a large motor or a small batch of produced motors generally adopts a high-speed single-slot punching process, namely, the stator slot shape is punched while the stator inner diameter is cut in the punching process. The number of slots of the stator punching sheet can influence the performance of the motor, the improper number of slots can reduce the performance of the motor, and the method for calculating the number of slots which can be punched by the single punching die is provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for calculating the range of the punching number of a single-groove punching die of a motor stator punching sheet, and the method is used for selecting a proper groove number to obtain the punching sheet quality with the best quality.
In order to solve the problems, the technical scheme of the invention is as follows: a method for calculating the range of the number of grooves of a single-groove punching die of a motor stator punching sheet comprises the following steps:
1) the number of the grooves which can be punched is n, according to the number Q of the stator sheet grooves which is set in advance, under the condition that the range of the left end shearing edge of the shearing punch falls between the notches of the left 1 groove,
the formula for calculating the number of the slots which can be punched is as follows:
in the formula:
q-number of slots of stator piece, the predetermined number of slots;
d, the inner diameter of the stator punching sheet is mm;
b-width of the notch, mm;
l-width of the shearing punch, mm;
n11-the minimum number of slots that can be punched, when the shear punch left shear edge falls at the left edge of the left 1 slot notch;
n12maximum number of stampable slotsWhen the value is large, the left end shearing edge of the shearing punch falls on the right edge of the notch of the left 1 groove;
2) considering the condition that the range of the right end shearing edge of the shearing punch falls between the notches of the right 1 groove,
the formula for calculating the number of the slots which can be punched is as follows:
in the formula:
n21-the minimum number of slots that can be punched, when the shearing punch right end shearing edge falls at the left edge of the right 1 slot notch;
n22-maximum number of slots that can be punched, when the shearing edge of the right end of the shearing punch falls at the right edge of the notch of the right 1 slot;
see step 1) for the meanings of the remaining symbols;
3) comparing the above results to obtain:
nmin≤n≤nmax
nminminimum value of the number of punched grooves, nmin-taking n11And n21The smaller of these;
nmaxmaximum number of punched grooves, nmax-taking n12And n22The larger of these.
By adopting the calculation method, the shearing edge of the shearing punch falls within the stator slot blanking range, and the punching sheet quality is optimal at the moment.
Drawings
FIG. 1 is a schematic view of a stator lamination slot type;
FIG. 2 is a stator single slot punching shear die punch fixing plate;
fig. 3 is a schematic diagram of the positions of the stator punching sheet and the die punch.
The sequence numbers in the figures illustrate: 1. punching sheet groove type; 2. a mold punch; 3. shearing the punch; 4. a left 1 groove; 5. and (4) a right 1 groove.
Detailed Description
The invention is described in further detail below with reference to the figures and examples.
A method for calculating the range of the number of grooves of a single-groove punching die of a motor stator punching sheet comprises the following steps:
1) setting the number of the grooves which can be punched as n, according to the number Q of the stator sheet grooves which is set in advance, the positions of the shearing punch head and the groove openings are as shown in figure 3, firstly considering the condition that the left end shearing edge range of the shearing punch head falls between the groove openings of the left 1 groove,
the formula for calculating the number of the slots which can be punched is as follows:
in the formula:
q-number of slots of stator piece, the predetermined number of slots;
d, the inner diameter of the stator punching sheet is mm;
b-width of the notch, mm;
l-width of the shearing punch, mm;
n11-the minimum number of slots that can be punched, when the shear punch left shear edge falls at the left edge of the left 1 slot notch;
n12-maximum number of slots that can be punched, when the shear punch left end shear edge falls at the left 1 slot notch right edge;
2) considering again the case where the range of the right-end sheared edge of the shearing punch falls between the notches of the right 1-slot, the positions of the shearing punch and the notches are as shown in fig. 3,
the formula for calculating the number of the slots which can be punched is as follows:
in the formula:
n21-the minimum number of slots that can be punched, when the shearing punch right end shearing edge falls at the left edge of the right 1 slot notch;
n22-maximum number of slots that can be punched, when the shearing edge of the right end of the shearing punch falls at the right edge of the notch of the right 1 slot;
see step 1) for the meanings of the remaining symbols;
3) comparing the above results to obtain:
nmin≤n≤nmax
nminminimum value of the number of punched grooves, nmin-taking n11And n21The smaller of these;
nmaxmaximum number of punched grooves, nmax-taking n12And n22The larger of these.
Claims (1)
1. A method for calculating the range of the number of grooves of a single-groove punching die of a motor stator punching sheet is characterized by comprising the following steps of: the method comprises the following steps:
1) the number of the grooves which can be punched is n, according to the number Q of the stator sheet grooves which is set in advance, under the condition that the range of the left end shearing edge of the shearing punch falls between the notches of the left 1 groove,
the formula for calculating the number of the slots which can be punched is as follows:
in the formula:
q-number of slots of stator piece, the predetermined number of slots;
d, the inner diameter of the stator punching sheet is mm;
b-width of the notch, mm;
l-width of the shearing punch, mm;
n11-the minimum number of slots that can be punched, when the shear punch left shear edge falls at the left edge of the left 1 slot notch;
n12-maximum number of slots that can be punched, when the shear punch left end shear edge falls at the left 1 slot notch right edge;
2) considering the condition that the range of the right end shearing edge of the shearing punch falls between the notches of the right 1 groove,
the formula for calculating the number of the slots which can be punched is as follows:
in the formula:
n21-the minimum number of slots that can be punched, when the shearing punch right end shearing edge falls at the left edge of the right 1 slot notch;
n22-maximum number of slots that can be punched, when the shearing edge of the right end of the shearing punch falls at the right edge of the notch of the right 1 slot;
see step 1) for the meanings of the remaining symbols;
3) comparing the above results to obtain:
nmin≤n≤nmax
nminminimum value of the number of punched grooves, nmin-taking n11And n21The smaller of these;
nmaxmaximum number of punched grooves, nmax-taking n12And n22The larger of these.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011044206.6A CN112275893B (en) | 2020-09-28 | 2020-09-28 | Method for calculating range of punching number of single-slot punching die of motor stator punching sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011044206.6A CN112275893B (en) | 2020-09-28 | 2020-09-28 | Method for calculating range of punching number of single-slot punching die of motor stator punching sheet |
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| Publication Number | Publication Date |
|---|---|
| CN112275893A true CN112275893A (en) | 2021-01-29 |
| CN112275893B CN112275893B (en) | 2022-10-21 |
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| CN202011044206.6A Active CN112275893B (en) | 2020-09-28 | 2020-09-28 | Method for calculating range of punching number of single-slot punching die of motor stator punching sheet |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048287A (en) * | 1989-06-23 | 1991-01-02 | 胡利民 | Stator core and this motor unshakable in one's determination is arranged |
| US20020163273A1 (en) * | 2001-03-22 | 2002-11-07 | Siemens Aktiengesellschaft | Electric rotating field machine with a two-layered winding in the stator slots |
| JP2006230116A (en) * | 2005-02-18 | 2006-08-31 | Mitsubishi Electric Corp | Permanent magnet motor and manufacturing method thereof |
| CN103904793A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Integrated motor stator punching sheet, motor stator and rotating motor using integrated motor stator punching sheet |
| CN211508737U (en) * | 2020-03-24 | 2020-09-15 | 西门子电机(中国)有限公司 | Stator punching sheet, stator core and motor |
-
2020
- 2020-09-28 CN CN202011044206.6A patent/CN112275893B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048287A (en) * | 1989-06-23 | 1991-01-02 | 胡利民 | Stator core and this motor unshakable in one's determination is arranged |
| US20020163273A1 (en) * | 2001-03-22 | 2002-11-07 | Siemens Aktiengesellschaft | Electric rotating field machine with a two-layered winding in the stator slots |
| JP2006230116A (en) * | 2005-02-18 | 2006-08-31 | Mitsubishi Electric Corp | Permanent magnet motor and manufacturing method thereof |
| CN103904793A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Integrated motor stator punching sheet, motor stator and rotating motor using integrated motor stator punching sheet |
| CN211508737U (en) * | 2020-03-24 | 2020-09-15 | 西门子电机(中国)有限公司 | Stator punching sheet, stator core and motor |
Non-Patent Citations (1)
| Title |
|---|
| 薛劭申等: "定子槽数和气隙长度对高速永磁无刷电动机性能的影响", 《微特电机》, no. 07, 28 July 2011 (2011-07-28), pages 21 - 24 * |
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| CN112275893B (en) | 2022-10-21 |
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