CN114589363A - Processing technology of female die in stator punching large-small groove single-punching die - Google Patents
Processing technology of female die in stator punching large-small groove single-punching die Download PDFInfo
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- CN114589363A CN114589363A CN202210216701.3A CN202210216701A CN114589363A CN 114589363 A CN114589363 A CN 114589363A CN 202210216701 A CN202210216701 A CN 202210216701A CN 114589363 A CN114589363 A CN 114589363A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention relates to a concave die processing technology in a stator punching sheet large-small groove single-punch die, belongs to the technical field of stator punching sheet single-punch die processing, and solves the technical problems that the precision cannot be guaranteed, the punching quality and efficiency of punching sheets are influenced due to unstable control and the like in the traditional one-time linear cutting. The solution is as follows: a stator punching large and small groove single-punching die medium concave die processing technology, 1) a large groove concave die insert is fixedly arranged in a first groove hole, and a small groove concave die insert is fixedly arranged in a second groove hole; 2) processing a large-groove wire-passing hole on the large-groove female die insert fixedly mounted in the step 1), and processing a small-groove wire-passing hole on the small-groove female die insert; 3) and (3) arranging the female die processed in the step 2) on a wire cutting machine by using the wire cutting machine, and cutting the large groove and the small groove. The invention uses the cutting mode of cutting one and repairing two by the wire cutting machine, the processing precision of the female die is accurate, the surface smoothness of the die is ensured, and the processing efficiency can be greatly improved in the processing of the batch stator large and small groove single-punch die.
Description
Technical Field
The invention belongs to the technical field of stator punching sheet single-punch die processing, and particularly relates to a processing technology of a concave die in a stator punching sheet large-small groove single-punch die.
Background
The stator double-groove type punching sheet is applied to an asynchronous three-phase motor, the stray loss of the motor can be effectively reduced, the temperature rise and the noise of the motor are reduced, the application of the H335-450 low-voltage high-power ultra-efficient motor and the large and small grooves of the stator punching sheet is necessary, and the stator double-groove type punching sheet has great significance for improving the efficiency of the motor, improving the starting and saving the total cost of the motor.
The processing of the large and small slots on the stator punching sheet is carried out through a large and small slot punching die of the stator punching sheet, the main functions of the large and small slot single punching die of the stator punching sheet are a male die and a female die, the female die is used for forming, the female die is processed according to the required slot type and used for waste materials after the slot punching, the processing of the stator punching sheet has a very important position, the precision of the female die influences the processing precision and the processing efficiency of stator punching sheets with the large and small slots in batch, and finally the precision and the size of a finally formed motor iron core product and the performance of a motor are directly related.
The existing single-punch die female die is mainly processed by linear cutting, the processing precision of the common single-punch die can meet the use requirement, but for the stator large and small groove single-punch die, the requirements on the precision and the smoothness of the female die for splicing and punching two different punches are higher, for the punching of common silicon steel sheets with the thickness of 0.5mm, as shown in a groove type shown in figure 1, the female die is required to be prepared according to the punches, the bidirectional gap is 0.05-0.07 mm, the precision of the female die cannot be guaranteed by one-step processing, the control is unstable, and the failure probability is higher.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a concave die machining process in a stator punching large-small groove single-punching die, and solves the technical problems that the precision cannot be ensured, the punching quality and efficiency of punching sheets are influenced by unstable control and the like in the traditional one-time linear cutting.
In order to solve the problems, the technical scheme of the invention is as follows: a concave die machining process in a stator punching sheet large-small groove single-punching die is disclosed, wherein: the female die comprises a female die plate, a large-groove female die insert and a small-groove female die insert, wherein the female die plate is provided with a first groove hole matched with the large-groove female die insert and a second groove hole matched with the small-groove female die insert;
the female die processing technology comprises the following steps:
1) the large-groove female die insert is fixedly arranged in a first groove hole, and the small-groove female die insert is fixedly arranged in a second groove hole;
2) processing a large-groove wire-passing hole on the large-groove female die insert fixedly mounted in the step 1), and processing a small-groove wire-passing hole on the small-groove female die insert;
3) using a wire cutting machine, arranging the female die processed in the step 2) on the wire cutting machine, cutting a wire electrode of the wire cutting machine to form a large groove by penetrating the wire electrode through the large groove wire penetrating hole and taking the large groove wire penetrating hole as a starting point, and then cutting the wire electrode through the small groove wire penetrating hole and taking the small groove wire penetrating hole as a starting point to form a small groove;
the cutting mode of the wire cutting machine is as follows:
3.1) first a first wire cut is made, wherein:
wire electrode speed: 3.5-5.5 mm/min;
compensation amount: 0.153 mm;
current: 4.5A;
voltage: 8V, and (2);
the processed dimensions are: r1-0.02, R2-0.02, L1, phi A-0.04, L2-0.04, a-0.0085mm, b-0.04 and c-0.04;
3.2) then carrying out a second wire cutting, wherein:
wire electrode speed: 10-15 mm/min;
compensation amount: 0.088 mm;
current: 1.5A;
voltage: 7.5V;
the processed dimensions are: r1+0.02, R2+0.02, L1, phi A +0.04, L2+0.04, a +0.0085mm, b +0.04, c + 0.04;
3.3) finally carrying out a third linear cutting, wherein:
wire electrode speed: 10-20 mm/min;
compensation amount: 0.085 mm;
current: 0.5A;
voltage: 5V, and (5);
the processed dimensions are: r1+0.03, R2+0.03, L1, phi A +0.06, L2+0.06, a +0.0127mm, b +0.06, c + 0.06.
Further, the large-groove female die insert and the small-groove female die insert are made of hard alloy materials.
Further, the large-groove female die insert is in interference fit with the first groove hole, and the small-groove female die insert is in interference fit with the second groove hole.
Further, the fit matching amount of the interference thermal sleeve is 0.06 mm.
Compared with the prior art, the invention has the beneficial effects that:
the first linear cutting adopts large compensation, large current and voltage processing, so that the insert stress is released, and the groove type size deformation is reduced; the second time adopts medium current and voltage processing to ensure the groove size; and the third time of processing by adopting small current and voltage further ensures the smoothness of the groove shape, the processed size completely meets the requirement of a drawing, and the smoothness of the groove shape is ensured.
The invention processes the female die by a cutting mode of cutting one by one and repairing two by a wire cutting machine, improves the matching success rate, not only is the precision of the female die processing easy to be accurate, but also the surface smoothness of the die is ensured, and the processing efficiency can be greatly improved in the processing of the batch stator large and small slot single-punch die.
Drawings
FIG. 1 is a schematic structural view of a female mold in the present invention;
FIG. 2 is a schematic structural view of a macro-groove die insert of the present invention;
FIG. 3 is a schematic view of the structure of the cell die insert of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and examples.
The concave die processing technology in the stator punching large-small groove single-punching die shown in fig. 1 to 3 is as follows: the female die comprises a female die plate 1, a large-groove female die insert 2 and a small-groove female die insert 3, wherein a first groove hole 1-1 matched with the large-groove female die insert 2 and a second groove hole 1-2 matched with the small-groove female die insert 3 are formed in the female die plate 1;
the female die processing technology comprises the following steps:
1) the large-groove female die insert 2 is fixedly arranged in a first groove hole 1-1, and the small-groove female die insert 3 is fixedly arranged in a second groove hole 1-2;
2) processing a large-groove wire-passing hole 2-1 on the large-groove female die insert 2 fixedly installed in the step 1), and processing a small-groove wire-passing hole 3-1 on the small-groove female die insert 3;
3) arranging the female die processed in the step 2) on a wire cutting machine by using the wire cutting machine, cutting a wire electrode of the wire cutting machine to form a large groove 2-2 by penetrating the wire electrode through the large groove wire penetrating hole 2-1 and taking the large groove wire penetrating hole 2-1 as a starting point, and then cutting the wire electrode through the small groove wire penetrating hole 3-1 and taking the small groove wire penetrating hole 3-1 as a starting point to form a small groove 3-2;
further, the large-groove die insert 2 and the small-groove die insert 3 are made of hard alloy materials. The arrangement of the large-groove die insert 2 and the small-groove die insert 3 and the selection of the material thereof not only save alloy materials for the die, but also prevent the deformation of the periphery of the groove shape and the cracking of the groove shape during the subsequent punching of the ring piece.
Further, the large-groove female die insert 2 is in interference hot sleeve fit with the first groove hole 1-1, and the small-groove female die insert 3 is in interference hot sleeve fit with the second groove hole 1-2. The interference thermal sleeve is adopted for matching, the sleeve can be sleeved without applying large pressure, and the protruding points on the contact surface are not ground by axial friction during assembly, so that the connection strength is obviously improved.
Further, the fit matching amount of the interference thermal sleeve is 0.06 mm.
Example one
The cutting mode of the wire cutting machine is as follows:
3.1) first a first wire cut is made, wherein:
wire electrode speed: 3.5 mm/min;
compensation amount: 0.153 mm;
current: 4.5A;
voltage: 8V, and (2);
the processed dimensions are: r1-0.02, R2-0.02, L1, phi A-0.04, L2-0.04, a-0.0085mm, b-0.04 and c-0.04; 3.2) then carrying out a second wire cutting, wherein:
wire electrode speed: 10 mm/min;
compensation amount: 0.088 mm;
current: 1.5A;
voltage: 7.5V;
the processed dimensions are: r1+0.02, R2+0.02, L1, phi A +0.04, L2+0.04, a +0.0085mm, b +0.04, c + 0.04; 3.3) finally carrying out a third linear cutting, wherein:
wire electrode speed: 10 mm/min;
compensation amount: 0.085 mm;
current: 0.5A;
voltage: 5V;
the processed dimensions are: r1+0.03, R2+0.03, L1, phi A +0.06, L2+0.06, a +0.0127mm, b +0.06, c + 0.06.
Example two
The cutting mode of the wire cutting machine is as follows:
3.1) first a first wire cut is made, wherein:
wire electrode speed: 4 mm/min;
compensation amount: 0.153 mm;
current: 4.5A;
voltage: 8V, and (2);
the processed dimensions are: r1-0.02, R2-0.02, L1, phi A-0.04, L2-0.04, a-0.0085mm, b-0.04 and c-0.04; 3.2) then carrying out a second wire cutting, wherein:
wire electrode speed: 12 mm/min;
compensation amount: 0.088 mm;
current: 1.5A;
voltage: 7.5V;
the processed dimensions are: r1+0.02, R2+0.02, L1, phi A +0.04, L2+0.04, a +0.0085mm, b +0.04, c + 0.04; 3.3) finally carrying out third linear cutting, wherein:
wire electrode speed: 15 mm/min;
compensation amount: 0.085 mm;
current: 0.5A;
voltage: 5V, and (5);
the processed dimensions are: r1+0.03, R2+0.03, L1, phi A +0.06, L2+0.06, a +0.0127mm, b +0.06, c + 0.06.
EXAMPLE III
The cutting mode of the wire cutting machine is as follows:
3.1) first a first wire cut is made, wherein:
wire electrode running speed: 5.5 mm/min;
compensation amount: 0.153 mm;
current: 4.5A;
voltage: 8V, and (2);
the processed dimensions are: r1-0.02, R2-0.02, L1, phi A-0.04, L2-0.04, a-0.0085mm, b-0.04 and c-0.04;
3.2) then carrying out a second wire cutting, wherein:
wire electrode speed: 15 mm/min;
compensation amount: 0.088 mm;
current: 1.5A;
voltage: 7.5V;
the processed dimensions are: r1+0.02, R2+0.02, L1, phi A +0.04, L2+0.04, a +0.0085mm, b +0.04, c + 0.04;
3.3) finally carrying out third linear cutting, wherein:
wire electrode speed: 20 mm/min;
compensation amount: 0.085 mm;
current: 0.5A;
voltage: 5V, and (5);
the processed dimensions are: r1+0.03, R2+0.03, L1, phi A +0.06, L2+0.06, a +0.0127mm, b +0.06, c + 0.06.
The first linear cutting adopts large compensation, large current and voltage processing, so that the insert stress is released, and the groove-shaped size deformation is reduced;
the second time adopts medium current and voltage processing to ensure the groove size;
and the third time of processing by adopting small current and voltage further ensures the smoothness of the groove shape, the processed size completely meets the requirement of a drawing, and the smoothness of the groove shape is ensured.
Claims (4)
1. A concave die machining process in a stator punching sheet large-small groove single-punching die is characterized in that: the female die comprises a female die plate (1), a large-groove female die insert (2) and a small-groove female die insert (3), wherein a first slotted hole (1-1) matched with the large-groove female die insert (2) and a second slotted hole (1-2) matched with the small-groove female die insert (3) are formed in the female die plate (1);
the female die processing technology comprises the following steps:
1) the large-groove die insert (2) is fixedly arranged in a first groove hole (1-1), and the small-groove die insert (3) is fixedly arranged in a second groove hole (1-2);
2) a large groove threading hole (2-1) is processed on the large groove female die insert (2) fixedly installed in the step 1), and a small groove threading hole (3-1) is processed on the small groove female die insert (3);
3) arranging the female die processed in the step 2) on a wire cutting machine by using the wire cutting machine, cutting a wire electrode of the wire cutting machine to form a large groove (2-2) by penetrating the wire electrode through the large groove wire threading hole (2-1) and taking the large groove wire threading hole (2-1) as a starting point, and then cutting the wire electrode through the small groove wire threading hole (3-1) and taking the small groove wire threading hole (3-1) as a starting point to form a small groove (3-2);
the cutting mode of the wire cutting machine is as follows:
3.1) first a first wire cut is made, wherein:
wire electrode speed: 3.5-5.5 mm/min;
compensation amount: 0.153 mm;
current: 4.5A;
voltage: 8V, and (2);
the processed dimensions are: r1-0.02, R2-0.02, L1, phi A-0.04, L2-0.04, a-0.0085mm, b-0.04 and c-0.04;
3.2) then carrying out a second wire cutting, wherein:
wire electrode speed: 10-15 mm/min;
compensation amount: 0.088 mm;
current: 1.5A;
voltage: 7.5V;
the processed dimensions are: r1+0.02, R2+0.02, L1, phi A +0.04, L2+0.04, a +0.0085mm, b +0.04, c + 0.04;
3.3) finally carrying out a third linear cutting, wherein:
wire electrode speed: 10-20 mm/min;
compensation amount: 0.085 mm;
current: 0.5A;
voltage: 5V, and (5);
the processed dimensions are: r1+0.03, R2+0.03, L1, phi A +0.06, L2+0.06, a +0.0127mm, b +0.06, c + 0.06.
2. The female die machining process in the stator punching large-small groove single-punching die according to claim 1, characterized in that: the large-groove female die insert (2) and the small-groove female die insert (3) are both made of hard alloy materials.
3. The female die machining process in the stator punching large-small groove single-punching die according to claim 1, characterized in that: the large-groove female die insert (2) is in interference hot sleeve fit with the first groove hole (1-1), and the small-groove female die insert (3) is in interference hot sleeve fit with the second groove hole (1-2).
4. The female die machining process in the stator punching large-small groove single-punching die according to claim 3, characterized in that: the fit matching amount of the interference thermal sleeve is 0.06 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210216701.3A CN114589363A (en) | 2022-03-07 | 2022-03-07 | Processing technology of female die in stator punching large-small groove single-punching die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210216701.3A CN114589363A (en) | 2022-03-07 | 2022-03-07 | Processing technology of female die in stator punching large-small groove single-punching die |
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| Publication Number | Publication Date |
|---|---|
| CN114589363A true CN114589363A (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210216701.3A Pending CN114589363A (en) | 2022-03-07 | 2022-03-07 | Processing technology of female die in stator punching large-small groove single-punching die |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09285917A (en) * | 1996-04-18 | 1997-11-04 | Denso Corp | Electrochemical machining method |
| CN101658965A (en) * | 2009-09-21 | 2010-03-03 | 奇瑞汽车股份有限公司 | Manufacturing method of non-standard female die |
| CN102528192A (en) * | 2011-12-31 | 2012-07-04 | 中国第一汽车股份有限公司 | Accurate wire cutting method of irregular die hole of embedded block with molded surface |
| CN104400370A (en) * | 2014-11-28 | 2015-03-11 | 王俐帧 | Processing technology for concave and convex mold |
| CN107775298A (en) * | 2016-08-26 | 2018-03-09 | 方芳 | A kind of cavity plate processing technology |
| CN109352103A (en) * | 2018-11-14 | 2019-02-19 | 南京航空航天大学无锡研究院 | One kind being used for the multiple cutting method of high speed to-and-fro thread feed electric spark wire cutting high current |
| CN111702027A (en) * | 2020-05-07 | 2020-09-25 | 广东华昌铝厂有限公司 | Extrusion die and processing method thereof |
| CN113977020A (en) * | 2021-11-22 | 2022-01-28 | 中国航发贵州黎阳航空动力有限公司 | Turbine disc mortise machining method |
-
2022
- 2022-03-07 CN CN202210216701.3A patent/CN114589363A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09285917A (en) * | 1996-04-18 | 1997-11-04 | Denso Corp | Electrochemical machining method |
| CN101658965A (en) * | 2009-09-21 | 2010-03-03 | 奇瑞汽车股份有限公司 | Manufacturing method of non-standard female die |
| CN102528192A (en) * | 2011-12-31 | 2012-07-04 | 中国第一汽车股份有限公司 | Accurate wire cutting method of irregular die hole of embedded block with molded surface |
| CN104400370A (en) * | 2014-11-28 | 2015-03-11 | 王俐帧 | Processing technology for concave and convex mold |
| CN107775298A (en) * | 2016-08-26 | 2018-03-09 | 方芳 | A kind of cavity plate processing technology |
| CN109352103A (en) * | 2018-11-14 | 2019-02-19 | 南京航空航天大学无锡研究院 | One kind being used for the multiple cutting method of high speed to-and-fro thread feed electric spark wire cutting high current |
| CN111702027A (en) * | 2020-05-07 | 2020-09-25 | 广东华昌铝厂有限公司 | Extrusion die and processing method thereof |
| CN113977020A (en) * | 2021-11-22 | 2022-01-28 | 中国航发贵州黎阳航空动力有限公司 | Turbine disc mortise machining method |
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