CN114189114B - Manufacturing process of iron core of motor for new energy automobile - Google Patents
Manufacturing process of iron core of motor for new energy automobile Download PDFInfo
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- CN114189114B CN114189114B CN202210133174.XA CN202210133174A CN114189114B CN 114189114 B CN114189114 B CN 114189114B CN 202210133174 A CN202210133174 A CN 202210133174A CN 114189114 B CN114189114 B CN 114189114B
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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
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
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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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- 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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- 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
Abstract
The invention discloses a manufacturing process of an iron core of a motor for a new energy automobile, wherein a material belt is arranged between an upper die and a lower die of a continuous blanking die and is blanked continuously to form a motor rotor iron core and a motor stator iron core with a positioning groove, so that the blanking forming efficiency is high, the motor iron core with the positioning groove and a special-shaped structure rotates after the iron core is formed, the concentricity between the iron cores of the formed motor iron core is better, the dynamic balance during working is better, the formed motor iron core is small in size, the light weight is realized, and the performance requirements to be met by the motor stator iron core are met.
Description
Technical Field
The invention relates to the technical field of a motor iron core manufacturing process for a new energy automobile, in particular to a motor iron core manufacturing process for the new energy automobile.
Background
At present, new energy automobiles are widely popularized and further popularized, particularly electric automobiles, for a new energy automobile driving motor, a stator iron core and a rotor iron core are hearts of the motor, and the manufacturing of the new energy automobile driving motor is concerned by people all the time. At present, for the manufacturing process of the motor stator core with the positioning groove and the special shape, the core pieces are stacked and connected with each other to form the core only by adopting simple blanking molding, but the manufacturing mode causes the concentricity between the core pieces to be poor, so that the dynamic balance of the core during operation is poor, and the inventor finally has the manufacturing process of the invention in view of the defects.
Disclosure of Invention
The invention aims to solve the technical defects and provides a manufacturing process of an iron core of a motor for a new energy automobile, which comprises the following steps.
The invention discloses a manufacturing process of an iron core of a motor for a new energy automobile, which comprises the following steps:
step S1, the material belt is conveyed to the blanking direction in a continuous stepping mode between the upper die and the lower die of the continuous blanking die, and the rotor iron chip forming area of the material belt is blanked to form a rotor iron chip, blanking holes reserved on the material belt, shape gap forming holes and a plurality of through holes arranged in an annular array, the through holes are arranged around the blanking holes, and the shape forming areas arranged in three annular arrays on the material belt are all blanked to form shape gap forming holes to form a first pre-forming area with three shape gap forming holes, or two of the shape forming areas arranged in three annular arrays on the material belt are respectively blanked to form shape gap forming holes to form a second pre-forming area with two shape gap forming holes;
step S2, in the process of continuously conveying the material belt in a stepping manner, blanking and forming a plurality of stator grooves arranged in an annular array on the material belt around a blanking hole area, wherein the stator grooves are formed in a first preforming area or a second preforming area, and the step S3 is carried out;
step S3, in the process of continuously conveying the material belt step by step, punching and forming a stator inner hole on the first preforming area or the second preforming area by taking the center of the blanking hole as a reference, so that the stator groove shape is communicated with the stator inner hole, and simultaneously, after a plurality of stator buckling points are formed on the periphery of the stator groove shape in a punching way, the step S4 is carried out;
step S4, in the process of continuously conveying the material belt in a stepping manner, a plurality of through holes arranged in an annular array are used as blanking boundaries of the stator iron core sheet on the first preforming area or the second preforming area, the edges of the forming male dies of the continuous blanking die correspond to the blanking boundaries of the stator iron core sheet, and the stator iron core sheet is blanked and formed and enters the blanking female die; the stator core pieces enter a preset number of stator core pieces and are fixedly connected through stator buckling points to form a motor stator core; the stator iron core sheet formed on the first preforming area is not provided with a lug, and the stator iron core sheet formed on the second preforming area is punched and formed into a lug under the condition that an outline notch is not formed in an outline forming area;
step S5, in the process of continuously conveying the material belt in a stepping manner, punching and forming the stator iron core sheet without the lug on the formed first pre-forming area twice, punching and forming the stator iron core sheet with the lug on the formed second pre-forming area, and after each stator iron core sheet is formed, rotating the blanking female die by 120 degrees to enable the formed motor stator iron core to form the positioning groove by spacing two stator iron core sheets without the lug between the two lugs, wherein the positions of the lugs on the motor stator iron core are corresponding to each other.
Preferably, in step S1, the rotor core sheet is continuously molded as follows:
step S11, in the process of continuously conveying the material belt in a stepping manner, a plurality of pilot holes, two first forming holes and a second forming hole are formed in a rotor iron chip forming area in a punching manner, the distance between the central point of the second forming hole and the central point of the rotor iron chip forming area is a straight line, the distance between the central point of the two first forming holes and the central point of the rotor iron chip forming area is an oblique line, the included angle between the straight line and the two oblique lines is 144 degrees, the included angle between the two oblique lines is 72 degrees, and then the step S12 is started;
step S12, in the process of continuously and stepwisely conveying the material belt, taking the central point of the rotor iron chip forming area as the center to perform blanking forming, wherein ten vent holes are arranged in an annular array, a part of two first forming holes is respectively superposed with the two vent holes on one side to form a groove-shaped notch, a part of one second forming hole is superposed with the vent hole on the other side to form a groove-shaped notch, and then the step S13 is performed;
step S13, in the process of continuously conveying the material belt in a stepping manner, a first magnetic steel groove with five annular arrays, a plurality of through holes with annular arrays, a plurality of rotor buckling points and three shape notch forming holes or two shape notch forming holes are formed by punching and molding by taking the central point of the rotor iron chip molding area as the center, the first magnetic steel groove is positioned at the side of the inner wall of the outer side of the vent hole, the through hole is far away from the first magnetic steel groove, and then the step S14 is carried out;
step S14, in the process of continuously conveying the material belt in a stepping manner, punching and forming five second magnetic steel grooves and rotor shaft holes which are arranged in an annular array by taking the central point of the forming area of the rotor iron chip as the center, wherein one second magnetic steel groove is arranged between every two first magnetic steel grooves, and the step S15 is performed;
step S15, in the process of continuously conveying the material belt step by step, the first magnetic steel groove and the second magnetic steel groove are used as punching boundaries of the rotor iron core pieces, the edges of the forming male dies of the continuous punching dies correspond to the punching boundaries of the rotor iron core pieces, the rotor iron core pieces are punched and formed and enter the blanking female dies, a plurality of rotor iron core pieces in a preset number are fixedly connected through rotor fastening points, a motor rotor iron core is formed, and meanwhile, a plurality of through holes and blanking holes are still reserved on the material belt.
Preferably, a first through sheet hole punching step is further included between step S12 and step S13, a plurality of first through sheet holes corresponding to the positions of the rotor fastening points are formed by punching on the side of the vent holes, so that the formed rotor core sheet has the first through sheet holes, and the first through sheet holes on the rotor core sheet cannot be fixedly connected with the rotor fastening points of the motor rotor core in the blanking female die.
Preferably, a second through-hole punching step is further included between step S2 and step S3, a plurality of second through-holes corresponding to the positions of the stator fastening points are formed on the side of the stator slot by punching, so that the formed stator core sheet has the second through-hole, and the second through-hole on the stator core sheet cannot be fixedly connected with the stator fastening point of the motor stator core in the blanking female die.
Preferably, a continuous stepping blanking station is formed between an upper die and a lower die of the continuous blanking die, and the continuous stepping blanking station sequentially comprises a first blanking station for blanking a pilot hole and a forming hole, a second blanking station for blanking a vent hole, a third blanking station for blanking a first through sheet hole, a fourth blanking station for blanking a first magnetic steel groove, a rotor fastening point and a through hole, a fifth blanking station for blanking a second magnetic steel groove, a rotor shaft hole and an appearance notch forming hole, a sixth blanking station for blanking a rotor iron core sheet, a seventh blanking station for blanking a stator groove, an eighth blanking station for blanking a second through sheet hole, a ninth blanking station for blanking a stator inner hole and a stator fastening point, and a tenth blanking station for blanking and rotating the stator iron core sheet from a feeding direction to a blanking direction.
According to the manufacturing process of the iron core of the motor for the new energy automobile, which is designed by the invention, the motor iron core with the positioning groove and the special-shaped structure rotates after the iron core pieces are molded, so that the concentricity of the iron core pieces of the molded motor iron core is better, the dynamic balance during working is better, the molded motor iron core is small in size, and the light weight is realized.
Drawings
FIG. 1 is a schematic diagram of a motor core manufacturing process;
fig. 2 is an exploded view of a stator core of an electric machine.
In the figure: the punching die comprises a first forming hole 1, a second forming hole 2, a pilot hole 3, a vent hole 4, a groove-shaped notch 5, a first through sheet hole 6, a rotor fastening point 7, a through hole 8, a first magnetic steel groove 9, a second magnetic steel groove 10, an outline forming area 12, an outline notch forming hole 121, a blanking hole 13, a rotor iron core sheet 14, a stator groove 15, a second through sheet hole 16, a stator inner hole 17, a stator fastening point 18, a stator iron core sheet 19, a lug 191, a positioning groove 192, a material belt 100, a first punching station 101, a second punching station 102, a third punching station 103, a fourth punching station 104, a fifth punching station 105, a sixth punching station 106, a seventh punching station 107, an eighth punching station 108, a ninth punching station 109, a tenth punching station 110 and a rotor shaft hole 120.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Example (b):
as shown in fig. 1 and fig. 2, the manufacturing process of the iron core of the motor for the new energy vehicle described in this embodiment includes the following steps:
step S1, the material belt 100 is conveyed between the upper die and the lower die of the continuous blanking die in a continuous stepping manner to the blanking direction, wherein a continuous stepping blanking station is formed between the upper die and the lower die of the continuous blanking die, the continuous stepping blanking station comprises a first blanking station 101 for blanking the pilot hole 3 and the forming hole, a second blanking station 102 for blanking the vent hole 4, a third blanking station 103 for blanking the first through hole 6, a fourth blanking station 104 for blanking the first magnetic steel groove 9, the rotor fastening point 7 and the through hole 8, a fifth blanking station 105 for blanking the second magnetic steel groove 10, the rotor shaft hole 120 and the shape notch forming hole 121, a sixth blanking station 106 for blanking the rotor core 14, a seventh blanking station 107 for blanking the stator groove 15, and an eighth blanking station 108 for blanking the second through hole 16 in sequence from the feeding direction to the blanking direction, A ninth blanking station 109 for blanking the stator inner hole 17 and the stator fastening point 18, and a tenth blanking station 110 for blanking and rotating the stator core piece 19, wherein the specific blanking steps are as follows.
Blanking a rotor iron core chip forming area of the material belt 100 to form a rotor iron core chip 14, a blanking hole 13 reserved on the material belt, an outline notch forming hole 121 and a plurality of through holes 8 arranged in an annular array, wherein the plurality of through holes 8 are arranged around the blanking hole 13, and outline forming areas 12 arranged in three annular arrays on the material belt are all blanked and formed with outline notch forming holes 121 to form a first pre-forming area with three outline notch forming holes 121, or two outline forming areas 12 arranged in three annular arrays on the material belt are respectively blanked and formed with outline notch forming holes 121 to form a second pre-forming area with two outline notch forming holes 121; the steps of the method are prepared for the subsequent forming of the stator iron core piece 19, the rotor iron core piece 14 is correspondingly formed during the forming of the blanking hole 13, the stator iron core piece 19 is formed by punching the blanking hole 13 in the material belt for avoiding waste of the material belt, the material utilization rate is greatly improved, the first preforming area is arranged for forming the stator iron core piece 19 without the lug 191, and the second preforming area is arranged for forming the stator iron core piece 19 with one lug 191.
Step S2, in the process of continuously conveying the material tape 100 step by step, blanking a plurality of stator slots 15 arranged in an annular array on the material tape 100 around the blanking hole 13, wherein the stator slots 15 are formed in the first preforming region or the second preforming region, and the process goes to step S3; the necessary stator slots 15 of the stator core of the motor can be effectively formed.
Step S3, in the process of continuously conveying the material belt 100 step by step, punching and forming a stator inner hole 17 on the first preforming area or the second preforming area by taking the center of the blanking hole 13 as a reference, so that the stator groove 15 is communicated with the stator inner hole 17, and simultaneously, after a plurality of stator buckling points 18 are punched and formed on the periphery of the stator groove 15, entering step S4; in the step, the stator buckling points 18 are used as a necessary structure for fixedly connecting a plurality of stator iron core sheets 19 after being stacked mutually, so that the iron core sheets are immediately buckled with the iron core sheets in the blanking female die after being formed, the iron core sheets are formed after discharging, the iron core sheets do not need to be fixedly connected after sheet arrangement, and the production efficiency is improved.
Step S4, in the process of continuously stepping the conveying belt 100, punching the stator iron core piece 19 by using the through holes 8 arranged in a plurality of annular arrays on the first pre-forming area or the second pre-forming area as the punching boundary of the stator iron core piece 19 and utilizing the edge of the forming convex die of the continuous punching die to correspond to the punching boundary of the stator iron core piece 19, and then, punching and forming the stator iron core piece 19 and putting the stator iron core piece into the punching concave die; the stator core pieces 19 are fixedly connected with each other through stator fastening points 18 to form a motor stator core; the stator lamination 19 formed on the first pre-forming area does not have the lug 191, and the stator lamination 19 formed on the second pre-forming area is punched and formed with a lug 191 under the condition that an outline notch is not formed in the outline forming area 12; the step S5 is matched to form the positioning groove 192 on the stator core of the motor.
Step S5, in the process of continuously conveying the material tape 100 in a step-by-step manner, punching and forming the stator core sheet 19 without the lug 191 on the first pre-forming area twice, punching and forming the stator core sheet 19 with the lug 191 on the second pre-forming area, after each stator core sheet 19 is formed, rotating the blanking female die by 120 degrees, so that the positioning slot 192 is formed on the formed stator core of the motor by spacing two stator core sheets 19 without the lug 191 between the two lug 191, and the lug positions of the motor stator core correspond to each other, outputting blanking after the stator core of the motor with the positioning slot 192 is formed, and the rotation in the step enables the concentricity and the verticality of the stator core of the motor to be effectively guaranteed, improves the working performance of the stator core, and meets the requirement of the motor for working.
Preferably, in step S1, the rotor core piece 14 is continuously formed as follows:
step S11, in the process of continuously conveying the material belt 100 in a stepping manner, a plurality of pilot holes 3, two first forming holes 1 and one second forming hole 2 for forming groove-shaped notches 5 are formed in a rotor iron chip forming area in a punching manner, the distance between the central point of the second forming hole 2 and the central point of the rotor iron chip forming area is a straight line, the distance between the central point of each of the two first forming holes 1 and the central point of the rotor iron chip forming area is an oblique line, the included angle between the straight line and each of the two oblique lines is 144 degrees, the included angle between the two oblique lines is 72 degrees, and then the step S12 is started;
step S12, in the process of continuously and stepwisely conveying the material belt 100, ten vent holes 4 arranged in an annular array are formed by punching and molding by taking the central point of the rotor iron chip molding area as the center, a part of two first molding holes 1 is respectively superposed with the two vent holes on one side to form a groove-shaped notch 5, a part of one second molding hole 2 is superposed with the vent hole on the other side to form a groove-shaped notch 5, and then the step S13 is performed;
step S13, in the process of continuously conveying the material belt 100 in a stepping manner, taking the central point of the rotor iron chip forming area as the center, performing blanking forming to form a first magnetic steel groove 9 with five annular arrays, a plurality of through holes 8 with annular arrays, a plurality of rotor buckling points 7 and three shape notch forming holes 121 or two shape notch forming holes 121, wherein the first magnetic steel groove 9 is positioned at the side of the inner wall of the outer side of the vent hole, the through hole 8 is far away from the first magnetic steel groove 9, and then the step S14 is performed;
step S14, in the process of continuously conveying the material belt 100 in a stepping manner, five second magnetic steel grooves 10 and rotor shaft holes 120 which are arranged in an annular array are formed in a punching manner by taking the central point of the rotor iron chip forming area as the center, one second magnetic steel groove 10 is arranged between every two first magnetic steel grooves 9, and the step S15 is performed at this moment;
step S15, in the process of continuously conveying the material strap 100 in a stepwise manner, the first magnetic steel groove 9 and the second magnetic steel groove 10 are used as blanking boundaries of the rotor iron core pieces 14, the edges of the forming male dies of the continuous blanking die correspond to the blanking boundaries of the rotor iron core pieces 14, the rotor iron core pieces 14 are blanked and formed, the rotor iron core pieces enter the blanking female die, a preset number of the rotor iron core pieces 14 are fixedly connected through the rotor fastening points 7, so as to form a motor rotor iron core, and meanwhile, a plurality of through holes 8 and blanking holes 13 are still reserved on the material strap.
The motor rotor core is formed before the motor stator core is formed, so that the motor rotor core and the motor stator core can be formed only by one pair of continuous blanking dies, the production efficiency of the motor core is greatly improved, the two types of cores are stable and reliable to manufacture, and the cost is reduced.
Preferably, a first through sheet hole 6 punching step is further included between step S12 and step S13, a plurality of first through sheet holes 6 corresponding to the positions of the rotor fastening points 7 are formed by punching on the side of the vent hole, so that the formed rotor core piece 14 has the first through sheet holes 6, and the first through sheet holes 6 on the rotor core piece 14 cannot be fixedly connected with the rotor fastening points 7 of the motor rotor core in the blanking die; after the number of the motor rotor iron cores reaches the preset number, the newly blanked and formed rotor iron core pieces 14 are not fixedly connected with the formed motor rotor iron cores, so that the formed motor rotor iron cores are in a separated state.
Preferably, a second through-sheet hole 16 blanking step is further included between step S2 and step S3, a plurality of second through-sheet holes 16 corresponding to the positions of the stator fastening points 18 are blanked and formed on the side of the stator slot shape 15, so that the formed stator iron core piece 19 has the second through-sheet holes 16, and the second through-sheet holes 16 on the stator iron core piece 19 cannot be fixedly connected with the stator fastening points 18 of the motor stator iron core in the blanking female die; after the number of the motor stator iron cores reaches the preset number, the newly blanked stator iron core piece 19 is not fixedly connected with the formed motor stator iron cores, so that the formed motor stator iron cores are in a separated state.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (5)
1. The manufacturing process of the iron core of the motor for the new energy automobile is characterized by comprising the following steps of:
step S1, the material belt (100) is conveyed in a continuous stepping mode to the blanking direction between the upper die and the lower die of the continuous blanking die, and the rotor iron core chip forming area of the material belt (100) is blanked, a rotor iron core sheet, a blanking hole (13) reserved on the material belt, an outline gap forming hole (121) and a plurality of through holes (8) arranged in an annular array are formed, the plurality of through holes are arranged around the blanking hole (13), and three annularly arrayed contour forming zones (12) on the material belt are all blanked and formed with contour notch forming holes (121) to form a first pre-forming zone with three contour notch forming holes, or two of the three outline forming areas (12) arranged in an annular array on the material belt are respectively punched and formed with outline notch forming holes so as to form a second preforming area provided with the two outline notch forming holes;
step S2, in the process of continuously conveying the material belt (100) in a stepping manner, a plurality of stator grooves (15) which are arranged in an annular array are blanked and formed on the material belt around the blanking hole (13), the stator grooves are formed in a first preforming zone or a second preforming zone, and the step S3 is carried out;
step S3, in the process of continuously conveying the material belt (100) in a stepping manner, punching and forming a stator inner hole (17) on the first preforming area or the second preforming area by taking the center of the blanking hole (13) as a reference, so that the stator groove shape (15) is communicated with the stator inner hole (17), and simultaneously, after a plurality of stator buckling points (18) are punched and formed on the periphery of the stator groove shape (15), entering the step S4;
step S4, in the process of continuously conveying the material belt in a stepping manner, a plurality of through holes (8) arranged in an annular array are used as blanking boundaries of the stator iron core piece (19) on the first pre-forming area or the second pre-forming area, the edges of the forming male die of the continuous blanking die correspond to the blanking boundaries of the stator iron core piece, and the stator iron core piece is blanked and formed and enters the blanking female die; the stator iron core pieces enter a preset number of stator iron core pieces and are fixedly connected through stator buckling points (18) to form a motor stator iron core; the stator iron core sheet formed on the first pre-forming area does not have a lug (191), and the stator iron core sheet formed on the second pre-forming area is punched and formed into a lug (191) under the condition that an outline forming area (12) is not provided with an outline notch;
step S5, in the process of continuously conveying the material belt (100) in a stepping manner, after punching and forming the stator iron core sheet (19) without the lug on the formed first preforming area twice, punching and forming the stator iron core sheet with the lug on the formed second preforming area, after forming each stator iron core sheet, rotating the blanking female die by 120 degrees, enabling the formed stator iron core of the motor to form the positioning groove (192) by spacing two stator iron core sheets without the lug between the two lugs, and enabling the positions of the lugs on the stator iron core of the motor to correspond to each other.
2. The manufacturing process of the iron core of the motor for the new energy automobile as claimed in claim 1, wherein in step S1, the rotor core sheet (14) is continuously formed by the following steps:
step S11, in the process of continuously conveying the material belt (100) in a stepping manner, a plurality of pilot holes (3), two first forming holes (1) and a second forming hole (2) for forming groove-shaped notches (5) are formed in a rotor iron chip forming area in a punching manner, the distance between the central point of the second forming hole (2) and the central point of the rotor iron chip forming area is a straight line, the distance between the central point of the two first forming holes (1) and the central point of the rotor iron chip forming area is an oblique line, the included angle between the straight line and the two oblique lines is 144 degrees, the included angle between the two oblique lines is 72 degrees, and then the step S12 is started;
step S12, in the process of continuously conveying the material belt (100) in a stepping mode, ten vent holes (4) arranged in an annular array are formed in a punching mode by taking the central point of a rotor iron chip forming area as the center, a part of each of two first forming holes (1) is overlapped with the two vent holes (4) on one side to form a groove-shaped notch (5), a part of one second forming hole (2) is overlapped with the vent hole (4) on the other side to form the groove-shaped notch (5), and the process enters step S13;
step S13, in the process of continuously conveying the material belt (100) in a stepping mode, a first magnetic steel groove (9) with five annular arrays, a plurality of through holes (8) with annular arrays, a plurality of rotor buckling points (7) and three shape gap forming holes (121) or two shape gap forming holes (121) are formed in a punching mode by taking the central point of a rotor iron chip forming area as the center, the first magnetic steel groove (9) is located on the side of the inner wall of the outer side of the ventilation hole, the through holes (8) are far away from the first magnetic steel groove (9), and then the step S14 is carried out;
step S14, in the process of continuously conveying the material belt (100) in a stepping manner, five second magnetic steel grooves (10) and rotor shaft holes (120) which are arranged in an annular array are formed by punching and forming by taking the central point of the forming area of the rotor iron chip as the center, one second magnetic steel groove (10) is arranged between every two first magnetic steel grooves (9), and the step S15 is executed at the moment;
step S15, in the process of continuously conveying the material belt (100) in a stepping mode, a first magnetic steel groove (9) and a second magnetic steel groove (10) are used as punching boundaries of the rotor iron core pieces (14), the rotor iron core pieces (14) are punched and formed by utilizing the edge of a forming male die of a continuous punching die to correspond to the punching boundaries of the rotor iron core pieces (14), the rotor iron core pieces enter a blanking female die and are fixedly connected among a plurality of preset number of rotor iron core pieces (14) through rotor buckling points (7) to form a motor rotor iron core, and meanwhile, a plurality of through holes (8) and blanking holes (13) are still reserved on the material belt.
3. The manufacturing process of the iron core of the motor for the new energy automobile according to claim 2, further comprising a first through-piece hole (6) punching step between the step S12 and the step S13, wherein a plurality of first through-piece holes (6) corresponding to the rotor fastening points (7) are formed by punching on the side of the vent holes, so that the first through-piece holes (6) are formed in the formed rotor core piece (14), and the first through-piece holes (6) in the rotor core piece (14) cannot be fixedly connected with the rotor fastening points (7) of the motor rotor iron core in the blanking concave die.
4. The manufacturing process of the iron core of the motor for the new energy automobile according to claim 3, characterized in that a second through-piece hole (16) punching step is further included between step S2 and step S3, a plurality of second through-piece holes (16) corresponding to the positions of the stator fastening points (18) are formed by punching on the side of the stator slot (15), so that the second through-piece holes (16) are formed on the formed stator iron core piece (19), and the second through-piece holes (16) on the stator iron core piece (19) cannot be fixedly connected with the stator fastening points (18) of the motor stator iron core in the blanking die.
5. The manufacturing process of the iron core of the motor for the new energy automobile as claimed in claim 4, wherein a continuous stepping blanking station is formed between an upper die and a lower die of the continuous blanking die, and the continuous stepping blanking station sequentially comprises a first blanking station (101) for blanking a pilot hole (3) and a forming hole, a second blanking station (102) for blanking a vent hole, a third blanking station (103) for blanking a first through hole (6), a fourth blanking station (104) for blanking a first magnetic steel groove (9), a rotor fastening point (7) and a through hole (8), a fifth blanking station (105) for blanking a second magnetic steel groove (10), a rotor shaft hole and an appearance notch (121), a sixth blanking station (106) for blanking a rotor iron core piece (14), a seventh blanking station (107) for blanking a stator groove (15), a first blanking station (103), a second blanking station (102), a second blanking station (b) and a third blanking station (c) for blanking a stator groove (15), and a blanking station (c) from a feeding direction to a blanking direction, The blanking device comprises an eighth blanking station (108) for blanking a second through hole (16), a ninth blanking station (109) for blanking a stator inner hole (17) and a stator buckling point (18), and a tenth blanking station (110) for blanking and rotating a stator iron core piece (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210133174.XA CN114189114B (en) | 2022-02-14 | 2022-02-14 | Manufacturing process of iron core of motor for new energy automobile |
Applications Claiming Priority (1)
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| CN111001705A (en) * | 2019-11-29 | 2020-04-14 | 江阴华新电器科技股份有限公司 | Stamping progressive die for three-piece combined jacking of motor stator and rotor iron cores |
| CN211405799U (en) * | 2020-01-21 | 2020-09-01 | 西门子电机(中国)有限公司 | Servo motor processing die |
| CN112439822A (en) * | 2019-09-03 | 2021-03-05 | 株式会社三井高科技 | Device and method for manufacturing laminated iron core |
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| JP2005086929A (en) * | 2003-09-10 | 2005-03-31 | Aisin Aw Co Ltd | Method of blanking and shaping single layer for stacked iron core |
| CN204089517U (en) * | 2014-09-10 | 2015-01-07 | 温岭市大精模具有限公司 | A kind of motor stator&rotor blanking piece device |
| CN206250921U (en) * | 2016-12-21 | 2017-06-13 | 温岭市汇元机电有限公司 | A kind of efficient rotor punching progressive die and its rotor punching progressive die |
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| CN112439822A (en) * | 2019-09-03 | 2021-03-05 | 株式会社三井高科技 | Device and method for manufacturing laminated iron core |
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| CN114189114A (en) | 2022-03-15 |
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Effective date of registration: 20221122 Address after: No. 31, Changhu Road Intelligent Equipment Industrial Park, Yueyang District, China (Hunan) Pilot Free Trade Zone, Yueyang City, Hunan Province, 414000 Patentee after: Yueyang Fansite Machinery Technology Co.,Ltd. Address before: 315613 No. 6, xiatianfan, Xiangshi village, Xidian Town, Ninghai County, Ningbo City, Zhejiang Province Patentee before: NINGBO ZHENYU TECHNOLOGY Co.,Ltd. |