CN113824277B - Manufacturing process of shaft hole single-key motor iron core - Google Patents
Manufacturing process of shaft hole single-key motor iron core Download PDFInfo
- Publication number
- CN113824277B CN113824277B CN202111399115.9A CN202111399115A CN113824277B CN 113824277 B CN113824277 B CN 113824277B CN 202111399115 A CN202111399115 A CN 202111399115A CN 113824277 B CN113824277 B CN 113824277B
- Authority
- CN
- China
- Prior art keywords
- shaft hole
- blanking
- iron core
- punching
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a manufacturing process of an axle hole single-key motor iron core, which punches a plurality of groups of process groove sets along the length direction of a strip material, wherein each group of process groove sets comprises N-1 axle hole process grooves which are distributed along the circumferential direction of an axle hole outline to be molded; adopting a shaft hole male die with N key grooves to punch a shaft hole in the area where each group of process groove groups on the strip are located, enabling the outlines of N-1 key grooves on the shaft hole male die to respectively fall into N-1 shaft hole process grooves, and obtaining a single-key shaft hole after punching the shaft hole; and (3) blanking and blanking the area where the single-key shaft hole is located by adopting a blanking male die, wherein the iron core sheet body punched and blanked after each blanking is stacked in the blanking female die, the blanking female die rotates for 360 DEG/N after each blanking and blanking, and when the number of stacked iron core sheet bodies reaches the required number, the iron core sheet bodies are separated from the blanking female die to obtain the iron core finished product. The invention can be used for manufacturing the iron core of the shaft hole single-key motor, the size precision of the shaft hole of the manufactured iron core is high, and the same plate difference can be effectively eliminated.
Description
Technical Field
The invention relates to a manufacturing process of a motor iron core, in particular to a manufacturing process of a shaft hole single-key motor iron core.
Background
Shaft hole single bond iron core generally is used as the rotor core of motor, only a key on its shaft hole, a keyway cooperation for with the pivot, overcome torsion between pivot and the rotor core, because shaft hole single bond iron core all is by several iron core monolithic bodies from same strip material on the range upon range of formation of blanking, and strip material itself can not accomplish completely unanimous at the thickness of each position, for example on the width direction of strip material, if the upper end is on a wide side thick lower extreme thin on a wide side, the difference of the monolithic iron core monolithic body that the blanking was come out can not be too big, but when the back is folded to multi-disc iron core layer, this difference will be several times and enlarge, the iron core finished product thickness that obtains will be inhomogeneous, influence performance.
The above difference is called as "same plate difference" in the field, and in order to eliminate the "same plate difference" of the iron core, it is a very good solution for the iron core with a circular shaft hole that the blanking die is rotated by a certain angle after each blanking and blanking, but if the blanking die is rotated by 90 ° after each blanking and blanking, for example, after each blanking and blanking, four keys are generated on the finished iron core, the structure of the iron core monolithic body can be referred to as fig. 1, and according to the existing method for eliminating the "same plate difference", the structure of the finished iron core can be referred to as fig. 2, and the finished iron core with this structure is not the shaft hole single key iron core, and needs to open four key slots on the rotating shaft matched with the iron core, so that the rigidity of the rotating shaft will be deteriorated, and the matching precision of the rotating shaft and the iron core is difficult to guarantee.
In order to manufacture the single-key iron core with the shaft holes, it is easy to think that a plurality of punching stations with the shaft holes are arranged in the advancing direction of the strip material, and each station is provided with a male die with the position changed relative to the position of the shaft hole of the previous station, for example, after each blanking and punching, the blanking female die is rotated by 90 degrees, 4 shaft hole punching stations are required to be arranged, so that the newly-blanked iron core single piece can be completely superposed with the previous iron core single piece after the blanking female die is rotated by 90 degrees, which is theoretically feasible, but in the actual operation, because a plurality of groups of stations and male dies are required to be arranged, the equipment cost is high, meanwhile, each punching of the shaft holes can lead the position of the strip material to generate tiny change, the shaft holes are all punched on a plurality of stations, the shaft holes on the iron core finished products obtained by lamination after blanking are difficult to ensure the consistency of the shaft holes on each height, although the 'same plate difference' is eliminated, the size precision of the shaft holes is reduced to a certain extent, still not the best solution, therefore, it is urgently needed to develop a manufacturing process for a shaft hole single-key iron core, so that the finished product of the manufactured iron core has high precision, and the influence of 'same plate difference' can be effectively eliminated.
Disclosure of Invention
The invention aims to provide a manufacturing process of a shaft hole single-key motor iron core. The manufacturing method can be used for manufacturing the shaft hole single-key motor iron core, the shaft hole size precision of the manufactured shaft hole single-key motor iron core is high, and meanwhile the influence of the same plate difference can be effectively eliminated.
The technical scheme of the invention is as follows: a manufacturing process of an axial hole single-key motor iron core is characterized in that a plurality of groups of process groove groups are sequentially punched on a bar material along the length direction of the bar material, each group of process groove group comprises N-1 axial hole process grooves which are circumferentially arranged along the outline of an axial hole to be formed, N is more than or equal to 3, after a rear group of process groove group rotates 360 DEG/N around the arrangement center of the rear group of process groove group, the arrangement of each axial hole process groove is completely the same as that of the front group of process groove group, namely, a gap between two adjacent axial hole process grooves is reserved between one pair of adjacent axial hole process grooves in each group of process groove group, the gap is defined as a key forming position, the key forming position is a solid part of the axial hole process groove which is not punched on the bar material, and the subsequent key is used for forming the axial hole of a single key; the method comprises the following steps of blanking an axle hole in an area where each group of process groove groups on a strip are located by adopting an axle hole male die with N key grooves, enabling the outlines of the N-1 key grooves on the axle hole male die to respectively fall in the N-1 axle hole process grooves during blanking, so that no key is formed during blanking, the edge outline of the axle hole is formed, the outlines of the remaining 1 key grooves fall at a key forming position during blanking, the key is used for forming the axle hole, a single-key axle hole is finally obtained, and the only key on the single-key axle hole is formed at the key forming position; and (2) blanking and blanking the area where the single-key shaft hole is located by adopting a blanking male die, wherein the iron core sheet body punched and fallen by the blanking male die after each blanking is stacked in a blanking female die, the blanking female die rotates for 360 DEG/N after each blanking and blanking, and when the number of stacked iron core sheet bodies reaches the number of iron core sheets required by one iron core, the iron core sheet bodies are separated from the blanking female die to obtain an iron core finished product.
Compared with the prior art, the invention has the beneficial effects that: all the shaft holes are processed by using the same shaft hole male die on the same station, the setting cost of the die is low, and the size precision of the punched shaft holes is high; in particular, the male die for blanking the shaft hole of the invention is provided with N key slots, in order to obtain a single-key shaft hole after the male die is blanked, the invention needs to process a process groove group before the shaft hole is blanked, the specific method is that the shaft hole male die with the N key slots is adopted to process a group of process groove groups, each group of process groove groups processed by the shaft hole male die with the N key slots is provided with N-1 shaft hole process grooves, the N-1 shaft hole process grooves of the front and rear groups have an angle difference of 360 DEG/N, the shaft hole male die with the N key slots can obtain N keys after being blanked theoretically, but the shaft hole process grooves actually exist and originally obtained keys are blanked in advance, therefore, after the area where the N-1 shaft hole process grooves are located is processed by the shaft hole with the N key slots, the outlines of the N-1 key slots on the shaft hole male die respectively fall into the N-1 shaft hole process grooves, therefore, the key cannot be formed, so that the only key on the forming shaft hole of the residual 1 key groove after blanking is formed, the single-key shaft hole is obtained, the single-key shaft hole obtained by blanking for the next time and the single-key shaft hole obtained by blanking for the previous time have an angle difference of 360 degrees/N, therefore, the shaft hole male die only needs to be arranged one, the single-key shaft hole male die does not need to be arranged one on a plurality of stations, after the blanking at the area of the single-key shaft hole is performed, the iron core single piece body of new blanking can be completely coincided with the previous iron core single piece body only by rotating the blanking female die for 360 degrees/N, and the same plate difference is eliminated.
In the manufacturing process of the shaft hole single-key motor iron core, a plurality of stations of the process groove groups in the strip material conveying direction are processed, a total of N independently-acting shaft hole process groove convex dies are arranged on the stations, and N-1 shaft hole process grooves of each process groove group are processed by the N-1 independently-acting shaft hole process groove convex dies.
The manufacturing process of the shaft hole single-key motor iron core specifically comprises the following process steps:
step A, feeding: feeding the strip material into a punch press, so that the strip material can be continuously fed forwards step by step on the punch press;
b, punching a pilot hole: in the process of feeding the strip materials forwards in a stepping mode, blanking of the pilot holes is conducted once in the length direction of the strip materials after each stepping mode, and an iron core single-piece forming area is arranged between every two adjacent pilot holes;
step C, punching a through hole: in the strip material step-forward feeding process, blanking of the through-flow hole is carried out in the iron core single sheet forming area after each step;
step D, punching a magnet slot: in the process of feeding the strip materials forwards in a stepping manner, blanking of a magnet slot is carried out in an iron core single sheet forming area after each stepping;
e, punching a process groove group: in the process of feeding the strip materials forwards in a stepping manner, after each stepping, blanking of a group of process groove sets is carried out in an iron core single sheet forming area, each group of process groove sets comprises three shaft hole process grooves distributed along the circumferential direction of a shaft hole profile to be formed, the center of the shaft hole profile to be formed is taken as a circle center, the included angle between a pair of adjacent shaft hole process grooves and a circle center connecting line is 180 degrees, the included angle between the other adjacent shaft hole process grooves and the circle center connecting line is 90 degrees, part of the profile of each shaft hole process groove is overlapped with the shaft hole profile to be formed, the arrangement of the three shaft hole process grooves after the rear group of process groove sets rotate by 90 degrees around the circle center is completely the same as that of the front group of process groove sets, and when each group of process groove sets is blanked, the three shaft hole process groove convex dies corresponding to the three shaft hole process grooves independently act;
step F, punching a metering hole or a buckling point: in the process of feeding the strip materials forwards in a stepping manner, the punching of a metering hole or a buckling point is carried out in the forming area of the iron core sheet body after each stepping;
step G, punching a shaft hole: in the strip material stepping forward feeding process, after each stepping, performing one-time blanking of a shaft hole in an iron core single sheet body forming area, and performing blanking of the shaft hole by adopting a shaft hole male die with 4 key grooves, so that the outlines of 3 key grooves on the shaft hole male die respectively fall into 3 shaft hole process grooves during blanking to form the edge outline of the shaft hole, the outlines of the rest 1 key groove are used for forming a key of the shaft hole during blanking, and a single-key shaft hole is obtained in the iron core single sheet body forming area after the shaft hole is blanked;
step H, blanking: in the process of feeding the strip materials forwards in a stepping mode, blanking is carried out once in the iron core sheet forming area after stepping every time, the iron core sheets punched and fallen after blanking are stacked in the blanking female die by the blanking male die every time, the blanking female die rotates 90 degrees after blanking every time, and when the number of stacked iron core sheets reaches the number of iron core sheets, the iron core sheets are separated from the blanking female die to obtain iron core finished products.
In the manufacturing process of the shaft hole single-key motor iron core, the punching machine is provided with a pilot hole punching station, a through hole punching station, a magnet slot punching station, a process slot group punching station, a metering hole punching station, a fastening point punching station, a shaft hole punching station and a blanking station in the strip material stepping forward direction.
In the manufacturing process of the shaft hole single-key motor iron core, the number of the punching process groove group stations is two, an empty station is arranged between the two punching process groove group stations, each group of process groove group in the step E completes punching at the two punching process groove group stations, and two independently-acting shaft hole process groove convex dies are uniformly arranged on each station.
In the manufacturing process of the shaft hole single-key motor iron core, when each group of process groove groups is blanked, three shaft hole process groove male dies are used for blanking the strip material in the total four independently-acting shaft hole process groove male dies on the two process groove group stations, if two shaft hole process grooves are obtained by blanking on a single station, the center of the blanking outline of the shaft hole is taken as the circle center, and the included angle between the two shaft hole process grooves and the line of the circle center is 180 degrees.
In the manufacturing process of the shaft hole single-key motor iron core, the number of the magnet slot punching stations is two, the magnet slot punching in the step D is completed at the two magnet slot punching stations, 8 magnet slots are punched in each station, and the magnet slot punching station and the magnet slot punching process slot group station are located at the same position in the strip material stepping forward direction.
In the manufacturing process of the shaft hole single-key motor iron core, the number of the through holes punched in the step C is 8, and the 8 through holes are circumferentially distributed on the outer side of the blanking contour of the shaft hole.
In the foregoing manufacturing process of the shaft hole single-key motor core, the number of the metering holes or the number of the fastening points obtained by punching the metering holes or the fastening points in step F is 8, and in one finished iron core product, the metering holes are punched on the iron core sheet body of the first blanking, and the fastening points are punched on the iron core sheet bodies of the rest blanking except the first blanking.
In the manufacturing process of the shaft hole single-key motor iron core, the button punching station and the shaft hole punching station are located at the same position of the strip material in the stepping forward direction.
Drawings
Fig. 1 is a schematic structural view of a single iron core sheet;
fig. 2 is a top view of a core monolithic body after lamination in a conventional process;
FIG. 3 is a schematic view of a press working line according to example 1 of the present invention;
FIG. 4 is a schematic view of a press working line according to example 2 of the present invention;
FIG. 5 is a schematic view of the overlapping of the profile of the axial bore punch and the profile of the axial bore process groove.
Reference numerals: 1-strip material, 2-punching pilot hole station, 3-punching through hole station, 4-punching magnet groove station, 5-punching process groove group station, 6-punching metering hole station, 7-punching buckling point station, 8-punching shaft hole station, 9-blanking station, 10-idle station, 11-pilot hole, 12-through hole, 13-magnet groove, 14-process groove group, 15-metering hole, 16-buckling point, 17-shaft hole and 141-shaft hole process groove.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example 1: a manufacturing process of a shaft hole single-key motor iron core is shown in a schematic diagram of a corresponding punch work flow line in figure 3, and specifically comprises the following process steps:
step A, feeding: and (3) feeding the strip material 1 into a punch press, so that the strip material 1 can be continuously fed forwards step by step on the punch press.
The punching machine is provided with a pilot hole punching station 2, a through hole punching station 3, a magnet slot punching station 4, a process slot group punching station 5, a metering hole punching station 6, a buckling point punching station 7, a shaft hole punching station 8 and a blanking station 9 in the step-by-step forward direction of a strip material 1.
The number of the punching process groove group stations 5 is two, and an empty station 10 is arranged between the two punching process groove group stations 5 at an interval, so that a reasonable space for controlling the action of the die is ensured.
The number of the magnet-punching groove stations 4 is two, and the magnet-punching groove stations 4 and the punching process groove group stations 5 are located at the same position of the strip 1 in the stepping forward direction, so that the die space is reasonably saved.
The punching buckling point station 7 and the punching shaft hole station 8 are located at the same position of the strip material 1 in the stepping forward direction, and the die space is reasonably saved.
Step B, punching a pilot hole 11: in the process of feeding the strip material 1 forwards in a stepping mode, blanking of the pilot holes 11 is conducted once in the length direction of the strip material 1 after each stepping mode, and an iron core single-piece body forming area is arranged between every two adjacent pilot holes 11.
Step C, flushing the through-flow hole 12: in the step-by-step forward feeding process of the strip material 1, punching of the through-flow holes 12 is carried out in the iron core single piece forming area after each step, the number of the through-flow holes 12 punched each time is 8, and the 8 through-flow holes 12 are circumferentially distributed on the outer side of the blanking outline of the shaft hole.
Step D, punching a magnet slot 13: in the step-by-step forward feeding process of the strip material 1, after each step, blanking of the magnet grooves 13 is carried out in the iron core single sheet forming area, the blanking of the magnet grooves 13 is carried out twice in two stations, and 8 magnet grooves 13 are blanked in each station.
E, punching the process groove group 14: in the process of feeding the strip material 1 in a stepping forward manner, after each stepping, a group of process groove sets 14 is blanked in an iron core single sheet forming area, each group of process groove sets 14 comprises three shaft hole process grooves 141 distributed along the circumferential direction of a shaft hole profile to be formed, the center of the shaft hole profile to be formed is taken as a circle center, the included angle between one pair of adjacent shaft hole process grooves 141 and a circle center connecting line is 180 degrees, the included angles between the other adjacent shaft hole process grooves 141 and the circle center connecting line are 90 degrees, part of the profile of each shaft hole process groove 141 is overlapped with the shaft hole profile to be formed, the arrangement of the three shaft hole process grooves 141 after the process groove sets 14 in the rear group rotate by 90 degrees around the circle center is completely the same as that of the process groove sets in the front group, and when each group of process groove sets 14 is blanked, the three shaft hole process groove convex dies corresponding to the three shaft hole process grooves 141 independently act.
In step E, each group of process cell groups 14 completes blanking at two station positions 5 of the punching process cell group, and each station position is uniformly provided with two independently acting shaft hole process cell male dies, therefore, when each group of process cell groups 14 is blanked, three shaft hole process cell male dies are arranged in four independently acting shaft hole process cell male dies on the two station positions 5 of the punching process cell group to blank the strip 1, if two shaft hole process cells 141 are blanked on a single station, the center of the blanking profile of the shaft hole 17 is taken as the center of the circle, the included angle between the two shaft hole process cells 141 and the line of the center of the circle forms 180 degrees, so as to provide a larger space for the arrangement of the die, specifically referring to fig. 3, each shaft hole process cell 141 is blanked by an independently acting shaft hole process cell, and two shaft hole process cells 141 are drawn on the first station position 5 of the punching process cell group in fig. 3 to better display the arrangement positions of the shaft hole process cell male dies, in the working condition of fig. 3, the first punching process groove set station 5 actually punches only one shaft hole process groove 141, and the blank station 10 shows the state after punching, and two shaft hole process grooves 141 are punched in the second punching process groove set station 5, so that 3 shaft hole process grooves 141 are formed in total, and the state shown in the second punching process groove set station 5 can be referred to.
Step F, punching a metering hole 15 or a buckling point 16: in the step-forward feeding process of the strip material 1, after each step, the metering holes 15 or the buckling points 16 are punched in the iron core sheet body forming area, the number of the metering holes 15 or the buckling points 16 obtained by punching the metering holes 15 or the buckling points 16 is 8, in an iron core finished product, the metering holes 15 are punched on the iron core sheet body of the first blanking, and the buckling points 16 are punched on the iron core sheet bodies of the rest blanking except the first blanking.
Step G, punching the shaft hole 17: in the step-by-step forward feeding process of a strip material 1, after each step, blanking of a shaft hole 17 is implemented in an iron core single sheet forming area, a shaft hole male die with 4 key grooves is used for blanking the shaft hole 17, the outlines of 3 key grooves on the shaft hole male die respectively fall into 3 shaft hole process grooves 141 during blanking, the edge outlines of the shaft hole 17 are formed, the outlines of the remaining 1 key grooves are used for forming keys of the shaft hole 17 during blanking, see fig. 5, a single-key shaft hole 17 is obtained in the iron core single sheet forming area after blanking, and the single-key shaft hole 17 obtained by the last blanking and the single-key shaft hole 17 obtained by the previous blanking have an angle difference of 90 degrees.
Step H, blanking: in the step-by-step forward pay-off in-process of strip 1, implement a blanking in iron core sheet body shaping region after stepping at every turn, iron core sheet body that blanking later on blanking of blanking terrace die is range upon range of inside the blanking die at every turn, and blanking die is rotatory 90 after blanking at every turn, can guarantee that the iron core sheet body physical stamina of new blanking can coincide completely with iron core sheet body shaft hole key before with, after the range upon range of piece number of iron core sheet body reaches the required piece number of an iron core, deviate from the blanking die and obtain the iron core finished product, this iron core finished product is shaft hole single bond motor core promptly.
Example 2: a process for manufacturing a shaft hole single-key motor iron core is shown in figure 4, wherein a corresponding work flow line diagram of a punch press is shown, unlike embodiment 1, the shaft hole process groove punch in this embodiment is not independently operated, therefore, four punching process groove group stations 5 are required to be arranged, each punching process groove group station 5 is provided with three synchronously-acting shaft hole process groove convex dies, however, the arrangement sequence of the three synchronous action shaft hole process groove male dies on the four punching process groove group stations 5 is different, the front part and the rear part have 90-degree angle difference, four process groove groups 14 are convenient to process and used for punching the subsequent shaft holes 17, compared with the embodiment 1, the proposal needs to be provided with four punching process groove group stations 5 and four groups of shaft hole process groove convex dies, the mould is not as good as the embodiment 1 in the aspects of cost and space utilization, but the controllability is simpler to a certain extent because the three shaft hole process groove convex moulds on each station synchronously act.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned examples, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The manufacturing process of the shaft hole single-key motor iron core is characterized in that: punching a plurality of groups of process groove groups on the strip material in sequence along the length direction of the strip material, wherein each group of process groove group comprises N-1 shaft hole process grooves which are circumferentially arranged along the outline of a shaft hole to be formed, N is more than or equal to 3, and after the rear group of process groove groups rotate for 360 degrees/N around the arrangement center of the rear group of process groove groups, the arrangement of each shaft hole process groove is completely the same as that of the front group of process groove groups; adopting an axle hole male die with N key grooves to punch the axle hole of the area where each group of process groove groups on the strip are located, so that the outlines of N-1 key grooves on the axle hole male die respectively fall into the N-1 axle hole process grooves during punching, keys are not formed during punching and are used for forming the edge outline of the axle hole, and the outlines of the remaining 1 key grooves are used for forming the keys of the axle hole during punching, and finally obtaining a single-key axle hole; and (2) blanking and blanking the area where the single-key shaft hole is located by adopting a blanking male die, wherein the iron core sheet body punched and fallen by the blanking male die after each blanking is stacked in a blanking female die, the blanking female die rotates for 360 DEG/N after each blanking and blanking, and when the number of stacked iron core sheet bodies reaches the number of iron core sheets required by one iron core, the iron core sheet bodies are separated from the blanking female die to obtain an iron core finished product.
2. The manufacturing process of the shaft hole single-key motor iron core according to claim 1 is characterized in that: the processing of a plurality of stations of the process groove groups in the strip conveying direction is realized, a total of N independently-acting shaft hole process groove convex dies are arranged on the stations, and N-1 shaft hole process grooves of each process groove group are processed by the N-1 independently-acting shaft hole process groove convex dies.
3. The manufacturing process of the shaft hole single-key motor iron core according to claim 1 or 2, characterized in that: the method specifically comprises the following process steps:
step A, feeding: feeding the strip material into a punch press, so that the strip material can be continuously fed forwards step by step on the punch press;
b, punching a pilot hole: in the process of feeding the strip materials forwards in a stepping mode, blanking of the pilot holes is conducted once in the length direction of the strip materials after each stepping mode, and an iron core single-piece forming area is arranged between every two adjacent pilot holes;
step C, punching a through hole: in the strip material step-forward feeding process, blanking of the through-flow hole is carried out in the iron core single sheet forming area after each step;
step D, punching a magnet slot: in the process of feeding the strip materials forwards in a stepping manner, blanking of a magnet slot is carried out in an iron core single sheet forming area after each stepping;
e, punching a process groove group: in the process of feeding the strip materials forwards in a stepping manner, after each stepping, blanking of a group of process groove sets is carried out in an iron core single sheet forming area, each group of process groove sets comprises three shaft hole process grooves distributed along the circumferential direction of a shaft hole profile to be formed, the center of the shaft hole profile to be formed is taken as a circle center, the included angle between a pair of adjacent shaft hole process grooves and a circle center connecting line is 180 degrees, the included angle between the other adjacent shaft hole process grooves and the circle center connecting line is 90 degrees, part of the profile of each shaft hole process groove is overlapped with the shaft hole profile to be formed, the arrangement of the three shaft hole process grooves after the rear group of process groove sets rotate by 90 degrees around the circle center is completely the same as that of the front group of process groove sets, and when each group of process groove sets is blanked, the three shaft hole process groove convex dies corresponding to the three shaft hole process grooves independently act;
step F, punching a metering hole or a buckling point: in the process of feeding the strip materials forwards in a stepping manner, the punching of a metering hole or a buckling point is carried out in the forming area of the iron core sheet body after each stepping;
step G, punching a shaft hole: in the strip material stepping forward feeding process, after each stepping, performing one-time blanking of a shaft hole in an iron core single sheet body forming area, and performing blanking of the shaft hole by adopting a shaft hole male die with 4 key grooves, so that the outlines of 3 key grooves on the shaft hole male die respectively fall into 3 shaft hole process grooves during blanking to form the edge outline of the shaft hole, the outlines of the rest 1 key groove are used for forming a key of the shaft hole during blanking, and a single-key shaft hole is obtained in the iron core single sheet body forming area after the shaft hole is blanked;
step H, blanking: in the process of feeding the strip materials forwards in a stepping mode, blanking is carried out once in the iron core sheet forming area after stepping every time, the iron core sheets punched and fallen after blanking are stacked in the blanking female die by the blanking male die every time, the blanking female die rotates 90 degrees after blanking every time, and when the number of stacked iron core sheets reaches the number of iron core sheets, the iron core sheets are separated from the blanking female die to obtain iron core finished products.
4. The manufacturing process of the shaft hole single-key motor iron core according to claim 3 is characterized in that: the punching machine is provided with a pilot hole punching station, a through hole punching station, a magnet groove punching station, a process groove group punching station, a metering hole punching station, a buckle point punching station, a shaft hole punching station and a blanking station in the strip material stepping forward direction.
5. The manufacturing process of the shaft hole single-key motor iron core according to claim 4 is characterized in that: and E, blanking process groove group stations, wherein the number of the punching process groove group stations is two, an idle station is arranged between the two punching process groove group stations, each group of process groove group in the step E is blanked at the two punching process groove group stations, and two independently-acting shaft hole process groove male dies are uniformly distributed on each station.
6. The manufacturing process of the shaft hole single-key motor iron core according to claim 5 is characterized in that: when each group of process groove sets is blanked, three shaft hole process groove male dies are arranged in four shaft hole process groove male dies which are independently operated on two punching process groove set stations, and if two shaft hole process grooves are obtained by blanking on a single station, the center of the blanking outline of the shaft hole is taken as the circle center, and the included angle between the two shaft hole process grooves and the connecting line of the circle centers forms 180 degrees.
7. The manufacturing process of the shaft hole single-key motor iron core according to claim 5 is characterized in that: and D, punching the magnet slots, wherein the number of the magnet slot punching stations is two, the magnet slots are punched at the two magnet slot punching stations in the step D, 8 magnet slots are punched at each station, and the magnet slot punching station are positioned at the same position of the strip material in the stepping forward direction.
8. The manufacturing process of the shaft hole single-key motor iron core according to claim 3 is characterized in that: in the step C, the number of the through holes punched in each time is 8, and the 8 through holes are circumferentially distributed on the outer side of the blanking outline of the shaft hole.
9. The manufacturing process of the shaft hole single-key motor iron core according to claim 3 is characterized in that: and F, punching the metering holes or the buckling points in the step F to obtain 8 metering holes or buckling points, punching the metering holes on the iron core sheet body of the first blanking in the iron core finished product, and punching the buckling points on the iron core sheet bodies of the rest blanking except the first blanking.
10. The manufacturing process of the shaft hole single-key motor iron core according to claim 4 is characterized in that: the punching buckling point station and the punching shaft hole station are located at the same position of the strip material in the stepping forward direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111399115.9A CN113824277B (en) | 2021-11-24 | 2021-11-24 | Manufacturing process of shaft hole single-key motor iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111399115.9A CN113824277B (en) | 2021-11-24 | 2021-11-24 | Manufacturing process of shaft hole single-key motor iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113824277A CN113824277A (en) | 2021-12-21 |
| CN113824277B true CN113824277B (en) | 2022-02-08 |
Family
ID=78918129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111399115.9A Active CN113824277B (en) | 2021-11-24 | 2021-11-24 | Manufacturing process of shaft hole single-key motor iron core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113824277B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113991900B (en) * | 2021-12-23 | 2022-03-22 | 宁波震裕科技股份有限公司 | Stack riveting structure of circumferential large-torque chute iron core and manufacturing process of iron core |
| CN116652027B (en) * | 2023-08-01 | 2023-09-22 | 苏州范斯特机械科技有限公司 | Rotor magnetic bridge blanking optimization method and rotor core production equipment |
| CN117428271B (en) * | 2023-12-20 | 2024-03-19 | 宁波震裕科技股份有限公司 | Die block forming method of motor iron core blanking die and motor iron core blanking die |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860134A (en) * | 2010-05-18 | 2010-10-13 | 江苏通达动力科技股份有限公司 | Stamping process for stator and rotor of wind power generator |
| CN102005869A (en) * | 2010-12-15 | 2011-04-06 | 兰州兰电电机有限公司 | Blank pressing process used in punching rotor slot on motor stator plate and key mold thereof |
| CN105057424A (en) * | 2015-08-12 | 2015-11-18 | 北京首钢股份有限公司 | Method and device for machining strip steel |
| CN211539190U (en) * | 2019-11-29 | 2020-09-22 | 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 |
-
2021
- 2021-11-24 CN CN202111399115.9A patent/CN113824277B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860134A (en) * | 2010-05-18 | 2010-10-13 | 江苏通达动力科技股份有限公司 | Stamping process for stator and rotor of wind power generator |
| CN102005869A (en) * | 2010-12-15 | 2011-04-06 | 兰州兰电电机有限公司 | Blank pressing process used in punching rotor slot on motor stator plate and key mold thereof |
| CN105057424A (en) * | 2015-08-12 | 2015-11-18 | 北京首钢股份有限公司 | Method and device for machining strip steel |
| CN211539190U (en) * | 2019-11-29 | 2020-09-22 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113824277A (en) | 2021-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113824277B (en) | Manufacturing process of shaft hole single-key motor iron core | |
| CN102111042B (en) | Method for manufacturing laminated core | |
| KR101921723B1 (en) | Manufacturing method and manufacturing apparatus for layered iron core | |
| JPWO2009069463A1 (en) | Manufacturing method of stator laminated iron core | |
| JP3722539B2 (en) | Manufacturing method of annular laminated iron core and progressive mold apparatus | |
| CN112122450B (en) | Method for forming convex hull at flanging position of metal stamping part and special stamping die set | |
| CN105790520A (en) | Motor lamination riveting rotor and stator grading punching folding device | |
| CN114453482B (en) | Manufacturing process of iron core | |
| CN117791987B (en) | High-speed production method of laminated iron core of motor | |
| CN104242565B (en) | The manufacture method of laminated iron core manufacture device and laminated iron core | |
| CN105728559A (en) | One-die two-socket precise forming die | |
| CN102990718A (en) | Die and method for punching plurality of products at one time | |
| CN211757882U (en) | Etching cutting die of two-way location | |
| CN106695255A (en) | Key production process | |
| CN114189114B (en) | Manufacturing process of iron core of motor for new energy automobile | |
| CN101875082A (en) | Continuous die mould of part | |
| JP5438441B2 (en) | Manufacturing method of laminated iron core and laminated iron core produced using the same | |
| CN210547341U (en) | Progressive die for forming stator and rotor of motor | |
| CN216312898U (en) | Station arrangement structure for manufacturing shaft hole single-key rotor core | |
| CN101829711A (en) | Rolling and cold-bending forming manufacturing method of window-shades for steel structure | |
| CN1644261A (en) | Method for shaping facsimile edge | |
| CN113922607B (en) | Winding slot hole processing die set in motor stator core forming process | |
| CN207735426U (en) | A kind of retainer ring mold | |
| CN113949235B (en) | Manufacturing process of motor rotor iron core with special-shaped tooth part | |
| CN113991900B (en) | Stack riveting structure of circumferential large-torque chute iron core and manufacturing process of iron core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221117 Address after: No. 31, Intelligent Equipment Industrial Park, Changhu Road, Yueyang, Hunan Province, 414000 Patentee after: Yueyang Fansite Machinery Technology Co.,Ltd. Address before: Xiangshan Industrial Zone, Xidian Town, Ninghai County, Ningbo City, Zhejiang Province Patentee before: NINGBO ZHENYU TECHNOLOGY Co.,Ltd. |