A stamping progressive die for the three-piece combination nesting of the motor stator and rotor core
Through the stamping step molding of the three-piece combined sleeve, the problems of winding difficulties and low production efficiency caused by the integrated structure of the motor stator core are solved, efficient core manufacturing and magnetic circuit performance are achieved, and the mold is improved. Adaptability and production automation.
Patent Information
- Application Number
- CN201911199217.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-11-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2039-11-29
Smart Images
Figure CN111001705B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of motor iron core manufacturing, and in particular to a stamping progressive die used for three-piece combined nesting of motor stator and rotor iron cores. Background Art
[0002] The motor core is the core component of the motor, which is used to increase the magnetic flux of the inductor coil to achieve the maximum conversion of electromagnetic power. The motor core usually includes a stator core and a rotor core.
[0003] In the prior art, the stator core of the motor is usually made of annular silicon steel sheets stacked together, and a number of winding slots evenly distributed are punched in the inner circle of the silicon steel sheets along the circumferential direction. The problems with this traditional stator core structure are: first, since the stator core is an integrated structure, winding is difficult and the production efficiency is low; second, the difficulty in winding also reduces the winding slot fill rate, resulting in a decrease in motor performance.
[0004] To this end, an internal and external assembled motor stator core has been developed, which is composed of Figure 6 The inner core 40 and the outer ring 41 are composed of the inner core 40 and the outer ring 41, wherein the inner core is assembled in the outer ring. This inner-outer assembled motor stator core can be assembled after winding, so the winding is more convenient, and the slot filling rate after winding is higher, so the winding efficiency and the performance of the motor can be improved. The rotor part that matches the inner-outer assembled motor stator core includes the following Figure 6 The rotor core 39 in the rotor core 39 has magnetic steel bars arranged at intervals on the outer circle thereof (the magnetic steel bars are arranged at intervals on the outer circle of the rotor core 39). Figure 6 The inner core, outer ring and rotor core are all formed by stamping and laminating silicon steel sheets. In order to improve the direction of the motor magnetic circuit and reduce the magnetic circuit loss, the silicon steel sheets of the inner core with improved structure are stamped into two forms: a whole inner core sheet with a full circle structure and a loose inner core sheet with adjacent teeth separated. When the silicon steel sheets are stacked, several layers of loose inner core sheets are stacked between every two full circles of inner core sheets to form a structure like Figure 7 The hollow structure 42 is shown.
[0005] In addition, when the main specifications of the motor are determined, the size of the inner core in the rotor core and the stator core remains unchanged, but the outer ring body in the stator core has different variant designs of the circumferential circular holes and stacked rivet holes distributed on the outer ring body according to different usage scenarios.
[0006] If the newly developed motor stator and rotor core is stamped with conventional stamping dies, the following problems will occur: first, the material utilization rate is low; second, the versatility of the die is poor, and it cannot meet the needs of the modified design of the circumferential circular hole and the stacked rivet hole on the outer ring body; third, it needs to be stacked separately after stamping, and its production efficiency is relatively low. In addition, since the inner core body has two forms of whole piece structure and scattered piece structure, the whole inner core body and the scattered inner core body need to be stamped with different dies, and the stacking after stamping is also troublesome. Summary of the invention
[0007] In order to solve the above problems, the present invention proposes a stamping progressive die for the combination of three-piece stator and rotor cores of motors, aiming to improve material utilization, improve the adaptability of the die to the circumferential circular holes and stacked rivet holes on the outer ring body, and improve production efficiency. The specific technical solution is as follows:
[0008] A stamping progressive die for a three-piece combination nesting of a motor stator and rotor core, comprising a progressive die main body composed of an upper die assembly and a lower die assembly, the progressive die main body being provided with a group of guide dies for punching guide holes on a material strip, a rotor core blanking area and two stator core blanking areas sequentially arranged in a stamping order, the two stator core blanking areas being sequentially a stator inner core blanking area and a stator outer ring blanking area, the rotor core blanking area being sequentially provided with a first blanking station to a fourth blanking station, the stator inner core blanking area being The fifth to seventh punching stations are sequentially arranged on the punching area, and the eighth to thirteenth punching stations are sequentially arranged on the stator outer ring body punching area; among the first to thirteenth punching stations, except that the twelfth punching station is an idle step station, each of the other punching stations is respectively provided with one or more punching dies, and the punching dies include a concave die arranged on the lower die assembly and a punch arranged on the upper die assembly, and the punch is used to realize the action and stroke of stamping lifting and lowering and is separately controlled by a cylinder.
[0009] The stamping progressive die in the above technical solution adopts a three-piece combined nesting punching method, so that the rotor core, the stator inner core body and the stator outer ring body are completed by nesting punching in one progressive die, thereby improving the material utilization rate and the punching efficiency is also relatively high.
[0010] In the above technical scheme, a total of six workstations are set in the punching area of the stator outer ring body, among which the eighth to tenth punching stations are used to punch circumferential circular holes and stacked rivet holes of different specifications on the outer ring body, thereby improving the adaptability of the mold to the variant design of the circumferential circular holes and stacked rivet holes on the outer ring body.
[0011] Since the lifting of the punch in the present invention is controlled individually by a cylinder, the control system of the progressive die can control whether the cylinder is in motion to determine whether the station is to be punched. Since the control is performed by the control system, the punching holes on the eighth punching station to the tenth punching station can be used in combination, thereby further improving the flexibility of the mold.
[0012] The specific setting method of the punching die on each punching station is as follows:
[0013] In the rotor core punching area, the first punching station and the second punching station are respectively provided with the first station circumferential circular hole punching die and the second station circumferential circular hole punching die at different distribution positions, the third punching station is provided with the rotor spline inner hole punching die, and the fourth punching station is provided with the rotor blanking punching die.
[0014] Preferably, the second punching station is also provided with a pre-punching die for the inner hole marking groove of the stator inner core.
[0015] In the stator inner core punching area, the fifth punching station is respectively provided with an inner core stacking riveting hole punching die and an inner core splitting punching die, the sixth punching station is provided with an inner core inner hole punching die, and the seventh punching station is provided with an inner core blanking punching die.
[0016] The punch of the inner core body segmentation punching die is controlled by a cylinder to determine whether to perform a punching action to determine whether the inner core body is made into a whole piece or a loose piece. For example, the control system of the progressive die can choose to punch a whole inner core body and then continuously punch a number of loose pieces of the inner core body, forming an alternating cycle of punching the whole inner core body and punching the loose inner core body, so that a hollow structure will be formed on the stacked inner core body, thereby improving the performance of the magnetic circuit.
[0017] In the stator outer ring body punching area, the eighth to tenth punching stations are respectively provided with the eighth station circumferential circular hole punching die, the ninth station circumferential circular hole punching die and the ninth station outer ring body stacking rivet hole punching die, the tenth station circumferential circular hole punching die and the tenth station outer ring body stacking rivet hole punching die with different distribution positions or different specifications, the eleventh punching station is provided with the outer ring body inner hole punching die, and the thirteenth punching station is provided with the outer ring body blanking punching die.
[0018] As a further optimization of the present invention, a fourteenth punching station is arranged after the thirteenth punching station, and a waste cutting punching die is arranged on the fourteenth punching station.
[0019] By setting the waste cutting and punching die, the waste strip after punching is cut into pieces, which is beneficial to the recycling of waste.
[0020] As a further improvement of the present invention, a rotor automatic stacking module is provided on the fourth punching station below the rotor blanking die.
[0021] The above-mentioned rotor automatic stacking module adopts an interference fit stacking module, specifically, a tightening sleeve is arranged on the stacking module, and the inner hole of the tightening sleeve is interference fit with the outer circle of the rotor.
[0022] Preferably, an inner core automatic stacking module is provided on the seventh punching station below the inner core blanking die.
[0023] The above-mentioned inner core automatic stacking module is provided with an inner core stacking hole adapted to the inner core shape, and a CNC electric push rod is provided below the inner core stacking hole. The CNC electric push rod presses upward on the punching sheet, and the CNC electric push rod automatically moves down by the thickness of a punching sheet every time a sheet is punched.
[0024] Preferably, an outer ring body automatic stacking module is provided on the thirteenth punching station below the outer ring body blanking die.
[0025] The above-mentioned outer ring body automatic stacking module is provided with an outer ring body stacking hole that is compatible with the outer ring body shape, and a CNC electric push rod is provided below the outer ring body stacking hole. The CNC electric push rod pushes upward on the punching sheet, and the CNC electric push rod automatically moves down by the thickness of a punching sheet every time a sheet is punched.
[0026] In addition, the rotor automatic stacking module, the inner core automatic stacking module and the outer ring automatic stacking module are respectively provided with lateral pushing devices to transfer the stacked iron cores to the material box.
[0027] By respectively arranging automatic stacking modules at the fourth punching station, the seventh punching station and the thirteenth punching station, the rotor core, the stator inner core body and the stator outer ring body are automatically punched and stacked simultaneously in a progressive die, with a high degree of automation, thereby improving production efficiency.
[0028] In addition, since the progressive die realizes the punching combination of the whole inner core and the loose inner core pieces, the whole inner core and the loose inner core pieces can be automatically stacked through the inner core automatic stacking module after punching, and a hollow structure is formed on the stacked stator inner core to improve the direction of the motor magnetic circuit and reduce the magnetic circuit loss, thereby realizing the automated and efficient production of integrated punching and stacking of high-performance stator inner cores.
[0029] The beneficial effects of the present invention are:
[0030] First, the present invention is a stamping progressive die for the three-piece combination nesting of the motor stator and rotor core. It adopts a punching method of the three-piece combination nesting, so that the rotor core, the stator inner core body and the stator outer ring body are completed by nesting punching in a progressive die, thereby improving the utilization rate of the material and the punching efficiency is also relatively high.
[0031] Second, a stamping progressive die for the three-piece combination nesting of the motor stator and rotor core of the present invention has a total of six workstations on the stator outer ring body blanking area, wherein the eighth to tenth blanking stations are used for setting the blanking of circumferential circular holes and stacked rivet holes of different specifications on the outer ring body, thereby improving the adaptability of the mold to the variant design of the circumferential circular holes and stacked rivet holes on the outer ring body.
[0032] Third, in a stamping progressive die for a three-piece combination nesting of a motor stator and rotor core of the present invention, the lifting and lowering of the punch of the progressive die is individually controlled by a cylinder, and during stamping, the control system of the progressive die can control whether the cylinder is actuated to determine whether the station is to be stamped. Since the control is performed by the control system, the punching holes on the eighth to tenth punching stations can be used in combination, thereby further improving the flexibility of the die.
[0033] Fourth, in a stamping progressive die for a three-piece combination nesting of a motor stator and rotor core of the present invention, the punch of the inner core body segmentation punching die is controlled by a cylinder to perform a stamping action to determine whether the inner core body is made into a whole piece or a loose piece. For example, the control system of the progressive die can choose to punch a whole inner core body and then continuously punch a number of loose pieces of the inner core body, forming an alternating cycle of punching the whole inner core body and punching the loose pieces of the inner core body, so that a hollow structure will be formed on the stacked inner core body, thereby improving the performance of the magnetic circuit.
[0034] Fifth, the present invention is a stamping progressive die for the three-piece combination nesting of the motor stator and rotor core. By setting a waste cutting and blanking die, the waste strip after blanking is cut into pieces, which is conducive to the recycling of waste.
[0035] Sixth, the present invention is a stamping progressive die for the three-piece combination nesting of the motor stator and rotor core. By respectively arranging automatic stacking modules at the fourth punching station, the seventh punching station and the thirteenth punching station, the rotor core, the stator inner core body and the stator outer ring body are automatically punched and stacked in a progressive die at the same time, and the degree of automation is high, thereby improving production efficiency.
[0036] Seventh, a stamping progressive die for the three-piece combination nesting of the motor stator and rotor core of the present invention realizes the punching and shearing combination of the inner core whole piece and the inner core loose pieces. After punching, the inner core whole piece and the inner core loose pieces can be automatically stacked through the inner core automatic stacking module, and a hollow structure is formed on the stacked stator inner core to improve the direction of the motor magnetic circuit and reduce the magnetic circuit loss, thereby realizing the automated and efficient production of integrated punching and stacking of high-performance stator inner cores. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1 It is a structural schematic diagram of a stamping progressive die (lower die assembly part) for three-piece combined nesting of motor stator and rotor cores of the present invention;
[0038] Figure 2 yes Figure 1 A top view of
[0039] Figure 3 It is a schematic diagram of the blanking die layout of the stamping progressive die;
[0040] Figure 4 yes Figure 3 A partial enlarged view of (left half);
[0041] Figure 5 yes Figure 3 A partial enlarged view of (right half);
[0042] Figure 6 It is a schematic diagram of the rotor core, inner core body and outer ring body in the stator and rotor core of the motor;
[0043] Figure 7 yes Figure 6 Schematic diagram of the local three-dimensional structure of the inner core.
[0044] In the figure: 1, the first punching station, 2, the second punching station, 3, the third punching station, 4, the fourth punching station, 5, the fifth punching station, 6, the sixth punching station, 7, the seventh punching station, 8, the eighth punching station, 9, the ninth punching station, 10, the tenth punching station, 11, the eleventh punching station, 12, the twelfth punching station, 13, the thirteenth punching station, 14, the fourteenth punching station, 15, the guiding die, 16, the rotor core punching area, 17, the stator inner core body punching area, 18, the stator outer ring body punching area, 19, the first station circumferential circular hole punching die, 20, the second station circumferential circular hole punching die, 21, the rotor spline inner hole punching die, 22, the rotor blanking punching die, 23, Inner hole marking groove pre-punching die, 24, inner core body stacking rivet hole punching die, 25, inner core body splitting punching die, 26, inner core body hole punching die, 27, inner core body blanking punching die, 28, eighth station circumferential hole punching die, 29, ninth station circumferential hole punching die, 30, ninth station outer ring body stacking rivet hole punching die, 31, tenth station circumferential hole punching die, 32, tenth station outer ring body stacking rivet hole punching die, 33, outer ring body hole punching die, 34, outer ring body blanking punching die, 35, edge waste cutting punching die, 36, rotor automatic stacking module, 37, inner core body automatic stacking module, 38, outer ring body automatic stacking module, 39, rotor core, 40, inner core body, 41, outer ring body, 42, hollowing. DETAILED DESCRIPTION
[0045] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.
[0046] like Figures 1 to 7The present invention shows an embodiment of a stamping progressive die for a three-piece combination nesting of a motor stator and rotor core, comprising a progressive die main body composed of an upper die assembly and a lower die assembly, the progressive die main body is provided with a group of guide dies 15 for punching guide holes on a material strip, a rotor core blanking area 16 and two stator core blanking areas arranged in sequence according to the order of stamping, the two stator core blanking areas are a stator inner core blanking area 17 and a stator outer ring blanking area 18, the rotor core blanking area 16 is provided with a first blanking station 1 to a fourth blanking station 4 in sequence, the stator core blanking area 16 is provided with a first blanking station 1 to a fourth blanking station 4 in sequence, The fifth to seventh punching stations 5 to 7 are sequentially arranged on the inner core punching area 17, and the eighth to thirteenth punching stations 8 to 13 are sequentially arranged on the stator outer ring punching area 18; among the first to thirteenth punching stations 1 to 13, except that the twelfth punching station 12 is an idle station, each of the other punching stations is respectively provided with one or more punching dies, and the punching dies include a concave die arranged on the lower die assembly and a punch arranged on the upper die assembly, and the action and stroke of the punch for realizing the stamping lifting are separately controlled by cylinders.
[0047] The stamping progressive die in the above technical solution adopts a three-piece combined nesting punching method, so that the rotor core 39, the stator inner core 40 and the stator outer ring 41 are completed by nesting punching in a progressive die, thereby improving the material utilization rate and the punching efficiency is also relatively high.
[0048] In the above technical scheme, a total of six workstations are set on the stator outer ring body punching area 18, among which the eighth punching station 8 to the tenth punching station 10 are used to punch circumferential circular holes and stacked rivet holes of different specifications on the outer ring body 41, thereby improving the adaptability of the mold to the variant design of the circumferential circular holes and stacked rivet holes on the outer ring body.
[0049] Since the lifting of the punch in this embodiment is controlled by a cylinder alone, the control system of the progressive die can control whether the cylinder moves to determine whether the station is to be punched. Since the control is performed by the control system, the punching holes on the eighth punching station 8 to the tenth punching station 10 can be used in combination, thereby further improving the flexibility of the mold.
[0050] The specific setting method of the punching die on each punching station is as follows:
[0051] In the rotor core punching area 16, the first punching station 1 and the second punching station 2 are respectively provided with a first station circumferential circular hole punching die 19 and a second station circumferential circular hole punching die 20 at different distribution positions, the third punching station 3 is provided with a rotor spline inner hole punching die 21, and the fourth punching station 4 is provided with a rotor blanking punching die 22.
[0052] Preferably, the second punching station 2 is also provided with a pre-punching die 23 for the inner hole marking groove of the stator inner core.
[0053] In the stator inner core punching area 17 , the fifth punching station 5 is respectively provided with an inner core stacking rivet hole punching die 24 and an inner core splitting punching die 25 , the sixth punching station 6 is provided with an inner core inner hole punching die 26 , and the seventh punching station 7 is provided with an inner core blanking punching die 27 .
[0054] The punch of the inner core body segmentation punching die 25 is controlled by a cylinder to perform a punching action to determine whether the inner core body 40 is made into a whole piece or a loose piece. For example, the control system of the progressive die can choose to punch a whole piece of the inner core body 40 and then punch a number of loose pieces of the inner core body 40 in succession, forming an alternating cycle of punching the whole piece of the inner core body 40 and punching the loose pieces of the inner core body 40, so that a hollow structure 42 is formed on the stacked inner core body 40, thereby improving the performance of the magnetic circuit.
[0055] In the stator outer ring body punching area 18, the eighth punching station 8 to the tenth punching station 10 are respectively provided with the eighth station circumferential circular hole punching die 28, the ninth station circumferential circular hole punching die 29 and the ninth station outer ring body stacking rivet hole punching die 30, the tenth station circumferential circular hole punching die 31 and the tenth station outer ring body stacking rivet hole punching die 32 with different distribution positions or different specifications, the eleventh punching station 11 is provided with the outer ring body inner hole punching die 33, and the thirteenth punching station 13 is provided with the outer ring body blanking punching die 34.
[0056] As a further optimization of the present embodiment, a fourteenth punching station 14 is provided after the thirteenth punching station 13 , and a waste cutting punching die 35 is provided on the fourteenth punching station 14 .
[0057] By providing the waste cutting and punching die 35, the waste strip after punching is cut into pieces, which is beneficial to the recycling of waste.
[0058] As a further improvement of the present embodiment, a rotor automatic stacking module 36 is provided on the fourth punching station 4 below the rotor blanking die 22 .
[0059] The rotor automatic stacking module 36 is an interference fit stacking module. Specifically, a tightening sleeve is provided on the stacking module, and the inner hole of the tightening sleeve is interference fit with the outer circle of the rotor.
[0060] Preferably, an inner core automatic stacking module 37 is provided on the seventh punching station 7 below the inner core blanking die 27 .
[0061] The inner core automatic stacking module 37 is provided with an inner core stacking hole matched with the outer shape of the inner core 40, and a CNC electric push rod is provided below the inner core stacking hole. The CNC electric push rod is pushed upward on the punching sheet, and the CNC electric push rod automatically moves down by the thickness of a punching sheet for each punching.
[0062] Preferably, an outer ring body automatic stacking module 38 is provided on the thirteenth punching station 13 below the outer ring body blanking die 34 .
[0063] The above-mentioned outer ring body automatic stacking module 38 is provided with an outer ring body stacking hole that is compatible with the shape of the outer ring body 41, and a CNC electric push rod is provided below the outer ring body stacking hole. The CNC electric push rod pushes upward on the punching sheet, and the CNC electric push rod automatically moves down by the thickness of a punching sheet every time a sheet is punched.
[0064] In addition, the rotor automatic stacking module 36, the inner core automatic stacking module 37 and the outer ring automatic stacking module 38 are also respectively provided with lateral pushing devices to transfer the stacked iron cores to the material box.
[0065] By respectively arranging automatic stacking modules at the fourth punching station 4, the seventh punching station 7 and the thirteenth punching station 13, the rotor core 39, the stator inner core 40 and the stator outer ring 41 are automatically punched and stacked simultaneously in a progressive die, with a high degree of automation, thereby improving production efficiency.
[0066] In addition, since the progressive die realizes the punching combination of the whole inner core body 40 and the loose pieces of the inner core body 40, the whole inner core body 40 and the loose pieces of the inner core body 40 can be automatically stacked through the inner core body automatic stacking module 37 after punching, and the stacked stator inner core body 40 is formed with a hollow 42 structure that improves the direction of the motor magnetic circuit and reduces the magnetic circuit loss, thereby realizing the automated and efficient production of integrated punching and stacking of high-performance stator inner core bodies 40.
[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A stamping progressive die for the three-piece combination nesting of the stator and rotor core of a motor, characterized in that: The invention comprises a progressive die body composed of an upper die assembly and a lower die assembly, wherein the progressive die body is provided with a group of guide dies for punching guide holes on a material strip, a rotor core punching area and two stator core punching areas which are arranged in sequence according to the order of punching, wherein the two stator core punching areas are a stator inner core punching area and a stator outer ring punching area, wherein the rotor core punching area is provided with a first punching station to a fourth punching station, the stator inner core punching area is provided with a fifth punching station to a seventh punching station, and the stator outer ring punching area is provided with an eighth punching station to a thirteenth punching station; among the first punching station to the thirteenth punching station, except that the twelfth punching station is an empty step station, each of the other punching stations is provided with one or more punching dies, wherein the punching dies include: It comprises a concave die arranged on the lower die assembly and a convex die arranged on the upper die assembly, and the action and stroke of the convex die for realizing the stamping lifting are separately controlled by cylinders; in the stator inner core blanking area, the fifth blanking station is respectively provided with an inner core stacking rivet hole blanking die and an inner core segmentation blanking die, the sixth blanking station is provided with an inner core inner hole blanking die, and the seventh blanking station is provided with an inner core blanking blanking die; an inner core automatic stacking module is arranged below the inner core blanking blanking die on the seventh blanking station; during the stamping process, the control system of the progressive die selects to punch a whole inner core piece and then continuously punch several inner core loose pieces, forming an alternating cycle of inner core whole piece blanking and inner core loose piece blanking, thereby forming a hollow structure on the stacked inner core that can improve the magnetic circuit performance.
2. A stamping progressive die for the three-piece combination nesting of the motor stator and rotor core according to claim 1, characterized in that: In the rotor core punching area, the first punching station and the second punching station are respectively provided with the first station circumferential circular hole punching die and the second station circumferential circular hole punching die at different distribution positions, the third punching station is provided with the rotor spline inner hole punching die, and the fourth punching station is provided with the rotor blanking punching die.
3. A stamping progressive die for the three-piece combination nesting of the motor stator and rotor core according to claim 2, characterized in that: The second punching station is also provided with a pre-punching die for the inner hole marking groove of the stator inner core.
4. A stamping progressive die for the three-piece combination nesting of the stator and rotor core of a motor according to claim 1, characterized in that: In the stator outer ring body punching area, the eighth to tenth punching stations are respectively provided with the eighth station circumferential circular hole punching die, the ninth station circumferential circular hole punching die and the ninth station outer ring body stacking rivet hole punching die, the tenth station circumferential circular hole punching die and the tenth station outer ring body stacking rivet hole punching die with different distribution positions or different specifications, the eleventh punching station is provided with the outer ring body inner hole punching die, and the thirteenth punching station is provided with the outer ring body blanking punching die.
5. The stamping progressive die for the three-piece combination nesting of the motor stator and rotor core according to claim 1, characterized in that: A fourteenth punching station is arranged behind the thirteenth punching station, and a waste cutting punching die is arranged on the fourteenth punching station.
6. A stamping progressive die for the three-piece combination nesting of the stator and rotor core of a motor according to claim 2, characterized in that: A rotor automatic stacking module is arranged on the fourth punching station below the rotor blanking die.
7. A stamping progressive die for the three-piece combination nesting of the stator and rotor core of a motor according to claim 4, characterized in that: An outer ring body automatic stacking module is arranged below the outer ring body blanking die on the thirteenth punching station.