CN109226454A - Rotor sheet of permanent magnet motor mold - Google Patents
Rotor sheet of permanent magnet motor mold Download PDFInfo
- Publication number
- CN109226454A CN109226454A CN201811355518.1A CN201811355518A CN109226454A CN 109226454 A CN109226454 A CN 109226454A CN 201811355518 A CN201811355518 A CN 201811355518A CN 109226454 A CN109226454 A CN 109226454A
- Authority
- CN
- China
- Prior art keywords
- formed punch
- plate
- lower die
- punch
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B21D28/14—Dies
-
- 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
-
- 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
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention relates to a kind of single-stroke moulds of rotor sheet of permanent magnet motor, rotor sheet of permanent magnet motor mold, including mould bases, upper die plate, punch fixing plate, leakage field hole formed punch, small magnetic slot formed punch, lower die, lower die holder, lower mold backing plate, big magnetic slot formed punch, lightening hole formed punch, small leakage field hole formed punch, big leakage field hole formed punch, centralized positioning axis；Mould bases is that guide post connection is rolled with two gaplesss, and mould bases lower end surface center is equipped with upper die plate, and upper die plate lower end is equipped with punch fixing plate, and upper die plate, punch fixing plate are bolted on mould bases；Several formed punches are fixed on punch fixing plate；Several formed punch lower ends are equipped with stripper plate, and lower die has lower mold backing plate, are equipped with centralized positioning axis in the lateral location of lower die, lower mold backing plate and lower die holder center.The rotor punching product orientation precision processed is high, is used cooperatively with centralized positioning axis, and centralized positioning axis can be made to be accurately positioned, and quality is rushed in guarantee, improves product processing efficiency.
Description
Technical field
The present invention relates to a kind of single-stroke moulds of rotor sheet of permanent magnet motor, are applied to efficient vehicle light weight magneto
In iron core production industry.
Background technique
The characteristics of single-groove punch-die, be commonly used in trial-production new product or small lot flute profile it is fairly simple electric machine rotor punching
On piece.
Rotor sheet of permanent magnet motor is usually by small magnet steel hole, big magnet steel hole, big leakage field hole, leakage field hole, small leakage field hole, subtracts
Repeated hole and axis hole composition, material therefor is the silicon steel plate of 0.3mm thickness.The so more rotor punching of complicated in this way and irregularly-shaped hole, one
As in the case of want to do trial production of new products, be all with wire cutting or laser cutting, such processing technology low efficiency is simultaneously at high cost.?
Can be with compound press tool come punching slot, however minimum range only has 1mm between rotor punching bracket groove and slot, one set of die can not
Complete, because the intensity of lower die is inadequate, need to be divided to two mold punching presses, the position precision of the second mold positioning pin it is difficult to ensure that,
Because slot is all irregularly-shaped hole.Punching can of course be processed with high-precision progressive die.But one cover die of high-precision progressive die
The expense of tool at least wants hundreds of thousands yuan or more.And several schemes are not suitable for examination to manufacturing cycle long in summary
Make the model machine of this kind of punching.
If using the gap punching (punching can once stop several times, the function of one more flushing) of high-speed single punch bed, magneto
Rotor punching single punch-die and high-speed single punch bed are with the use of there are certain difficulties:
1. the location hole that punching axis hole is greater than one-shot bed locating shaft；2. distance is small between magnetic slot and leakage field hole, therefore is designing
When in order to guarantee the intensity of lower die, can be flushed to rule using circling and just jump layout design slot.3. according to leakage field hole ruler
Very little, formed punch intensity small in this way is inadequate, formed punch have more than is needed rush it is several under will fracture, changing formed punch not only influences the production cycle, but also can make
Assembly and disassembly mold, which absolutely returns to, every time in situ extremely difficult (fill a mold because every, preferably rushes enough point of punchings, can protect in this way
Demonstrate,prove the consistency of punching).
Summary of the invention
In view of above-mentioned technology there are the problem of, the object of the present invention is to provide a kind of rotor sheet of permanent magnet motor single punch-dies
Tool, is used cooperatively with centralized positioning axis, can make centralized positioning axis precise positioning, and quality is rushed in guarantee, improves product processing effect
Rate.
To achieve the goals above, the technical scheme adopted by the invention is that: rotor sheet of permanent magnet motor mold, including mould
Frame, upper die plate, punch fixing plate, leakage field hole formed punch, small magnetic slot formed punch, lower die, lower die holder, lower mold backing plate, big magnetic slot
Formed punch, lightening hole formed punch, small leakage field hole formed punch, big leakage field hole formed punch, centralized positioning axis；Mould bases is led with two gapless rollings
Column connection, mould bases lower end surface center are equipped with upper die plate, and upper die plate lower end is equipped with punch fixing plate, upper die plate, punching
Head fixed plate is bolted on mould bases；Several formed punches are fixed on punch fixing plate；Several formed punch lower ends are equipped with de- material
Plate, lower die have lower mold backing plate, and lower die, lower mold backing plate both ends are bolted on the lower die seat respectively, in lower die, lower die
The lateral location at backing plate and lower die holder center is equipped with centralized positioning axis.
Further, punch fixing plate set gradually respectively small magnetic slot formed punch, small leakage field hole formed punch, leakage field hole formed punch,
Big leakage field hole formed punch, big magnetic slot formed punch and lightening hole formed punch；
The upper die plate and punch fixing plate are of same size；
The lower die and lower mold backing plate it is of same size；
Further, stripper plate is additionally provided in the mold, several formed punch one end are connected in punch fixing plate, several formed punches
The other end protrudes into stripper plate, and de- material board ends are bolted on mould bases respectively；
Further, de- material spring is additionally provided between mould bases and stripper plate, bolt is arranged in de- material spring；
The stripper plate is equipped with guiding distance close to lower die position, and guiding distance is 7mm, and 7mm is empty knife with outer portion；
Further, the position that the lower die, lower mold backing plate and lower die holder are contacted with centralized positioning axis is equipped with circular arc；Circular arc arc
Degree is determined at a distance from lower die holder by centralized positioning shaft diameter；
Further, oblique material leakage block is additionally provided on the lower die holder, the angle of oblique material leakage block is 50 degree, and the purpose is to allow go out
Lightening hole waste material smoothly leak down；
Further, the unilateral gap between the formed punch and lower die is 0.015---0.018Mmm, and gap small in this way is
It can guarantee punching quality；
Further, the centralized positioning axis is up-small and down-big structure, and seat diameter is 42mm under the centralized positioning axis；
Further, the centralized positioning axis is hollow structure, including keyway, keyway outer loop sets position circle；Keyway is with respect to one
The through-hole of side is to extend out structure, and extending out angle is 60 degree；
In order to guarantee accurate positioning of the centralized positioning axis on mold, keyway needed for product, and handle are first rushed in prefabricated axis hole
Index aperture needed for punching is gone out together, and then centralized positioning axis is mounted on mold；
Lamination structure is specifically used, the slot of eight equal parts is too big in order to solve point eight molding corners of punching, turns 45 degree every time, is used to
Property influence the problem of being easy axis hole splined portion tearing production waste paper, rush points for 24 times, both rushed and once stopped twice, and turned 15 every time
Degree turns three times totally 45 degree of angle punchings and once, rushes eight times altogether.The punching of such 8 equal part can be washed into, or choosing is more times.
The beneficial effects of the present invention are: the rotor punching product orientation precision processed is high, make with the cooperation of centralized positioning axis
With centralized positioning axis capable of being made to be accurately positioned, quality is rushed in guarantee, improves product processing efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is that Fig. 1 is side view.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is center positioning axis structure figure.
Fig. 5 is the side view of Fig. 4.
Fig. 6 is rotor punching structure figure.
In figure, 1, mould bases, 2, de- material spring, 3, upper die plate, 4, punch fixing plate, 5, leakage field hole formed punch, 6, small magnet steel
Slot formed punch, 7, stripper plate, 8, lower die, 9, lower mold backing plate, 10, big magnetic slot formed punch, 11, lightening hole formed punch, 12, the punching of small leakage field hole
Head, 13, big leakage field hole formed punch, 14, oblique material leakage block, 15, centralized positioning axis, 15-1, keyway, 15-2, locating ring, 16, lower die holder；
A, small magnetic slot, b, big magnetic slot, c, big leakage field hole, d, leakage field hole, e, small leakage field hole, f, lightening hole, g, axis hole.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing.This mold work in-process is in strict accordance with drawing requirement, punching
Desired effect is reached according to the punching of Sheet Metal Forming Technology punching press when pressure.
As shown in Figure 1-3, rotor sheet of permanent magnet motor single-stroke mould, including mould bases 1, upper die plate 3, punch fixing plate 4,
Leakage field hole formed punch 5, small magnetic slot formed punch 6, lower die 8, lower die holder 16, lower mold backing plate 9, big magnetic slot formed punch 10, lightening hole formed punch
11, small leakage field hole formed punch 12, big leakage field hole formed punch 13, centralized positioning axis 14；Mould bases is that guide post connection is rolled with two gaplesss
In upper and lower die holder, 1 lower end surface center of mould bases is equipped with upper die plate 3, and cope plate pads 3 lower ends and is equipped with punch fixing plate 4, upper mold
Backing plate 3, punch fixing plate 4, which are bolted, to be arranged on mould bases 1；Punch fixing plate 4 is equipped with several formed punches；Under several formed punches
End is equipped with stripper plate 7, and 8 lower end of lower die is equipped with lower mold backing plate 9, and lower die 8,9 both ends of lower mold backing plate are bolted under respectively
On die holder 16, the lateral location at 16 center of lower die 8, lower mold backing plate 9 and lower die holder is equipped with centralized positioning axis 15.
4 center of punch fixing plate set gradually respectively small magnetic slot formed punch 6, small leakage field hole formed punch 12, leakage field hole formed punch 5,
Big leakage field hole formed punch 13, big magnetic slot formed punch 10 and lightening hole formed punch 11；The upper die plate 3 and 4 width phase of punch fixing plate
Together；
The lower die 8 is of same size with lower mold backing plate 9；
Stripper plate 7 is additionally provided in the mold, several formed punch one end are connected to 4 in punch fixing plate, several formed punch other ends
7 center of stripper plate is protruded into, 7 both ends of stripper plate are bolted respectively on mould bases 1；
De- material spring 2 is additionally provided between mould bases 1 and stripper plate 7, bolt is arranged in de- material spring 2；
7 center of stripper plate is equipped with guiding distance close to forcer position, and guiding distance is 7mm, and 7mm is empty knife with outer portion；
The position that lower die 8, lower mold backing plate 9 and the lower die holder 16 is contacted with centralized positioning axis 15 is equipped with circular arc；Circular arc radian
It is determined at a distance from lower die holder by centralized positioning shaft diameter；
It can be positioned to solve centralized positioning axis 15；As shown in figure 4, first rushing 28 axis hole X5 keyways in prefabricated axis hole, and handle turns
Keyway needed for sub- punching and index aperture are gone out together；
Locating shaft as shown in Fig. 4 is designed, up-small and down-big structure designs attached drawing 1-3 mould according to the characteristics of rotor punching
Have graph structure, once the one small magnetic slot one big magnetic side channel of punching, a lightening hole, two small leakage field hole, two leakage field holes,
Two big leakage field hole；
In order to guarantee lower die intensity, two small magnetic slot, two big magnetic flowing current separation is selected at two symmetrical 22.5 degree；
It is additionally provided with oblique material leakage block 14 on the lower die holder 16, the angle of oblique material leakage block 14 is 50 degree, and the purpose is to allow go out
Lightening hole waste material smoothly leaks down；
In order to guarantee the Intensity Design of small leak hole, leak hole formed punch as shown, effective diameter is that 14 millimeters of long rest parts are widened
1.2 millimeters to 1.6 millimeters；
There is certain targeting part to make to be oriented to stripper plate 7, determines that this mold is only effective there are 7 millimeters according to formed punch size
It is oriented to distance, remaining is sky knife part；
In order to guarantee rotor core quality, the burr of punching be should be as small as possible while rotor punching thickness is 0.3 millimeter of silicon steel sheet, punching
Unilateral gap between head and lower die has to guarantee just to go out burr between 0.015---0.018mm in 0.03mm with undershoot
Piece.
8 grades of lamination structures are specifically used, the slot of eight equal parts is too big in order to solve point eight molding corners of punching, turns every time
45 degree, inertia effects are easy the problem of axis hole splined portion being torn production waste paper, and point 24 punchings had both been rushed and once stopped twice, often
Secondary turn 15 degree, turns three times totally 45 degree of angle punchings and once, rush eight times altogether.The punching of such 8 equal part can be washed into, or choosing is more times.
Claims (10)
1. rotor sheet of permanent magnet motor mold, it is characterised in that: including mould bases, upper die plate, punch fixing plate, the punching of leakage field hole
It is head, small magnetic slot formed punch, lower die, lower die holder, lower mold backing plate, big magnetic slot formed punch, lightening hole formed punch, small leakage field hole formed punch, big
Leakage field hole formed punch, centralized positioning axis；Mould bases is that guide post connection is rolled with two gaplesss, and mould bases lower end surface center is equipped with upper
Die-cushion plate, upper die plate lower end are equipped with punch fixing plate, and upper die plate, punch fixing plate are bolted on mould bases；Punching
Several formed punches are fixed in head fixed plate；Several formed punch lower ends are equipped with stripper plate, and lower die has lower mold backing plate, lower die, lower die
Backing plate both ends are bolted on the lower die seat respectively, are equipped in the lateral location of lower die, lower mold backing plate and lower die holder center
Centralized positioning axis.
2. rotor sheet of permanent magnet motor mold according to claim 1, it is characterised in that: punch fixing plate is successively set respectively
Set small magnetic slot formed punch, small leakage field hole formed punch, leakage field hole formed punch, big leakage field hole formed punch, big magnetic slot formed punch and lightening hole punching
Head.
3. rotor sheet of permanent magnet motor mold according to claim 1, it is characterised in that: the upper die plate and formed punch are solid
Fixed board is of same size.
4. rotor sheet of permanent magnet motor mold according to claim 1, it is characterised in that: the lower die and lower mold backing plate
It is of same size.
5. rotor sheet of permanent magnet motor mold according to claim 1, it is characterised in that: be additionally provided in the mold de-
Flitch, several formed punch one end are connected in punch fixing plate, and several formed punch other ends protrude into stripper plate, and de- material board ends are led to respectively
It crosses and is bolted on mould bases.
6. rotor sheet of permanent magnet motor mold according to claim 5, it is characterised in that: also set between mould bases and stripper plate
There is de- material spring, bolt is arranged in de- material spring.
7. rotor sheet of permanent magnet motor mold according to claim 5, it is characterised in that: the stripper plate is close to lower die position
Guiding distance is installed, guiding distance is 7mm, and 7mm is empty knife with outer portion.
8. rotor sheet of permanent magnet motor mold according to claim 1, it is characterised in that: the lower die, lower mold backing plate
And the position that lower die holder is contacted with centralized positioning axis is equipped with circular arc；Circular arc radian is by centralized positioning shaft diameter at a distance from lower die holder
It determines.
9. rotor sheet of permanent magnet motor mold according to claim 1, it is characterised in that: be additionally provided on the lower die holder
Oblique material leakage block, the angle of oblique material leakage block are 50 degree.
10. rotor sheet of permanent magnet motor mold according to claim 1, it is characterised in that: the formed punch and lower die it
Between unilateral gap be 0.015---0.018Mmm；The centralized positioning axis is up-small and down-big structure, and the center is fixed
Seat diameter is 42mm under the axis of position；The centralized positioning axis is hollow structure, including keyway, keyway outer loop sets position circle；Keyway
The through-hole of opposite side is to extend out structure, and extending out angle is 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355518.1A CN109226454A (en) | 2018-11-14 | 2018-11-14 | Rotor sheet of permanent magnet motor mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355518.1A CN109226454A (en) | 2018-11-14 | 2018-11-14 | Rotor sheet of permanent magnet motor mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109226454A true CN109226454A (en) | 2019-01-18 |
Family
ID=65075147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811355518.1A Pending CN109226454A (en) | 2018-11-14 | 2018-11-14 | Rotor sheet of permanent magnet motor mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109226454A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465576A (en) * | 2019-08-19 | 2019-11-19 | 抚顺煤矿电机制造有限责任公司 | A kind of permanent-magnet synchronous adjustable frequency motor rotor punching tooling |
| CN110773626A (en) * | 2019-11-06 | 2020-02-11 | 合肥禾松信息科技有限公司 | Motor stator punching sheet processing machine |
| CN114558932A (en) * | 2022-04-29 | 2022-05-31 | 徐州智博机车有限公司 | Punching die for motor production |
| CN117655196A (en) * | 2024-02-01 | 2024-03-08 | 靖江市天勤电机科技有限公司 | Three-in-one full-automatic keyway machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06564A (en) * | 1992-06-22 | 1994-01-11 | Yutaka Giken Co Ltd | Production of rotor having u-shaped section |
| CN201336615Y (en) * | 2008-12-30 | 2009-10-28 | 兰州兰电电机有限公司 | Mould capable of simultaneously punching wire slot and damping hole of generator rotor punching sheet |
| CN202079154U (en) * | 2011-05-06 | 2011-12-21 | 大连电机集团有限公司 | Torque motor stator punching mould |
| CN104741433A (en) * | 2013-12-26 | 2015-07-01 | 株式会社三井高科技 | Blanking die apparatus and method for manufacturing laminated iron core |
| CN204559267U (en) * | 2015-02-11 | 2015-08-12 | 苏州和鑫电气股份有限公司 | Can multi-angle use magneto single key slot rotor punching |
| CN207150279U (en) * | 2017-08-18 | 2018-03-27 | 大连电机集团有限公司 | A kind of motor rotor stamping sheet structure |
-
2018
- 2018-11-14 CN CN201811355518.1A patent/CN109226454A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06564A (en) * | 1992-06-22 | 1994-01-11 | Yutaka Giken Co Ltd | Production of rotor having u-shaped section |
| CN201336615Y (en) * | 2008-12-30 | 2009-10-28 | 兰州兰电电机有限公司 | Mould capable of simultaneously punching wire slot and damping hole of generator rotor punching sheet |
| CN202079154U (en) * | 2011-05-06 | 2011-12-21 | 大连电机集团有限公司 | Torque motor stator punching mould |
| CN104741433A (en) * | 2013-12-26 | 2015-07-01 | 株式会社三井高科技 | Blanking die apparatus and method for manufacturing laminated iron core |
| CN204559267U (en) * | 2015-02-11 | 2015-08-12 | 苏州和鑫电气股份有限公司 | Can multi-angle use magneto single key slot rotor punching |
| CN207150279U (en) * | 2017-08-18 | 2018-03-27 | 大连电机集团有限公司 | A kind of motor rotor stamping sheet structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465576A (en) * | 2019-08-19 | 2019-11-19 | 抚顺煤矿电机制造有限责任公司 | A kind of permanent-magnet synchronous adjustable frequency motor rotor punching tooling |
| CN110465576B (en) * | 2019-08-19 | 2024-04-19 | 抚顺煤矿电机制造有限责任公司 | Permanent magnet synchronous variable frequency motor rotor punching tool |
| CN110773626A (en) * | 2019-11-06 | 2020-02-11 | 合肥禾松信息科技有限公司 | Motor stator punching sheet processing machine |
| CN114558932A (en) * | 2022-04-29 | 2022-05-31 | 徐州智博机车有限公司 | Punching die for motor production |
| CN117655196A (en) * | 2024-02-01 | 2024-03-08 | 靖江市天勤电机科技有限公司 | Three-in-one full-automatic keyway machine |
| CN117655196B (en) * | 2024-02-01 | 2024-04-09 | 靖江市天勤电机科技有限公司 | Three-in-one full-automatic keyway machine |
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Application publication date: 20190118 |