CN111817462A - Large-rotation skew round buckle self-riveting rotor and rotor press-riveting die - Google Patents
Large-rotation skew round buckle self-riveting rotor and rotor press-riveting die Download PDFInfo
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- CN111817462A CN111817462A CN202010538057.2A CN202010538057A CN111817462A CN 111817462 A CN111817462 A CN 111817462A CN 202010538057 A CN202010538057 A CN 202010538057A CN 111817462 A CN111817462 A CN 111817462A
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- rotor punching
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- riveting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/026—Reinforcing the connection by locally deforming
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a large-rotation skew round buckle self-riveting rotor and a rotor press-riveting die, which belong to the technical field of motor rotor manufacturing, and comprise a body formed by overlapping a plurality of rotor punching sheets, wherein the center of each rotor punching sheet is provided with a shaft hole, the periphery of each rotor punching sheet is provided with a wire groove, each rotor punching sheet is circumferentially and uniformly distributed with a plurality of buckling points by taking the shaft hole as the center, each buckling point comprises a positioning groove and a positioning bulge, the positioning grooves and the positioning bulges are vertically and cylindrically arranged and respectively positioned on the upper side and the lower side of the rotor punching sheet, the positioning bulges of the latter rotor punching sheet are correspondingly embedded with the positioning grooves of the former rotor punching sheet one by one, and the central axis of each positioning groove is horizontally offset by a preset distance relative to the central axis. The invention has the advantages of strong drawing force and high yield.
Description
Technical Field
The invention belongs to the technical field of motor rotor manufacturing, and relates to a large-rotation skew round-button self-riveting rotor and a rotor press-riveting die.
Background
The rotor of the motor is subjected to a time-varying magnetic flux, which induces eddy currents therein, thereby generating energy losses. To reduce eddy current losses, the rotor is typically made up of a number of thin rotor laminations, i.e., laminations, which are stacked together in a known "skew" relationship.
For example, chinese patent application No. 95117706.0 discloses a method and apparatus for setting skew angle, including for assisting in determining the orientation of a skew pin of an apparatus having a central shaft for stacking motor rotor laminations. The skew pin is movable in at least one predetermined angular orientation relative to the axis of the central shaft. The tool comprises: a first member shaped to be positioned in a generally spatially expanded relationship with the central axis and having at least one location thereon corresponding to a predetermined rotor lamination stack height; and a second member disposed in a predetermined relationship on the first member at a location corresponding to a predetermined rotor lamination stacking height. The skew pin can be located on one or more scales corresponding to one or more locations on the second member to orient the skew pin at a corresponding angular orientation relative to the central axis.
However, the method and the equipment can only be suitable for small-angle skew of the rotor punching sheet, so that the problem of uneven rotor mass distribution is easily caused, and in order to solve the problem, the applicant provides a large-rotation skew self-riveting rotor with the publication number of CN204349609U, the self-riveting rotor comprises a body formed by overlapping a plurality of rotor punching sheets, a shaft hole is formed in the axis of each rotor punching sheet, four positioning salient points are uniformly distributed on each rotor punching sheet around the shaft hole, the positioning salient points are symmetrical along the radial center of each rotor punching sheet, an extending hole is formed in one end of each positioning salient point, the plurality of rotor punching sheets rotate in the same direction and the same angle one by one, and all the rotor punching sheets are riveted to.
However, in the rotor structure, in order to generate a skew guiding effect when the fastening point is self-riveted, the fastening point is designed to be long waist-shaped and provided with the extending hole, so that the pulling force is insufficient when the fastening point and the fastening point are overlapped and riveted, the rotor punching sheets are easily separated, and the yield of products is low. Moreover, the structure of the buckling point is complex, the requirement on the concentricity of the long waist-shaped buckling point and the rotor punching sheet is high, and the yield and the production efficiency of the product are also influenced. In addition, in some rotor products, due to factors such as size, the rotor punching sheet cannot adopt the long waist-shaped buckling point.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a large-rotation skew round buckle self-riveting rotor with strong drawing force and high yield and a rotor press-riveting die.
The purpose of the invention can be realized by the following technical scheme: the utility model provides a big gyration skew circle is buckled and is riveted rotor certainly, body that forms including a plurality of rotor punching coincide, the shaft hole has been seted up at every rotor punching's center, the wire casing is seted up to every rotor punching's periphery, and the rotor punching uses the shaft hole to have a plurality of knot points as central circumference equipartition, every knot point includes positioning groove and location arch, positioning groove, the location arch all is vertical cylindrical setting and lies in rotor punching upper and lower both sides respectively, the protruding and preceding rotor punching's of location of back rotor punching positioning groove one-to-one gomphosis, every positioning groove's the central axis is for corresponding the bellied central axis horizontal migration of location and predetermines the distance.
As a further improvement of the invention, each rotor punching sheet is provided with four buckling points, and the latter rotor punching sheet rotates 91-95 degrees relative to the former rotor punching sheet.
As a further improvement of the invention, a counting hole is vertically formed in the position, corresponding to the buckling point, of the rotor punching sheet at the bottom of the body in a penetrating manner, and the counting hole can be used for being embedded by the positioning protrusion.
The invention also provides a rotor riveting die for manufacturing the large-rotation skew round-button self-riveting rotor, which comprises a shaft hole station for punching a shaft hole of a rotor punching sheet, a wire slot station for punching a wire slot of the rotor punching sheet, a fastening point station for punching a fastening point of the rotor punching sheet and a blanking station for blanking and laminating the riveted rotor punching sheet, wherein the fastening point station comprises a plurality of groups of fastening point male dies and fastening point female dies which are matched, the fastening point male dies and the fastening point female dies are respectively arranged in a cylindrical shape, the central axis of each fastening point male die is horizontally offset from the central axis of the corresponding fastening point female die by a preset distance, and the depth of the fastening point male dies punched into the rotor punching sheet is not more than the thickness of the rotor punching sheet.
As a further improvement of the blanking device, the blanking station comprises a blanking male die, a blanking female die and a torsion mechanism which are matched with each other and drive the blanking female die to rotate, and the torsion mechanism drives the blanking female die to rotate by a preset angle.
As a further improvement of the blanking device, the blanking male die is vertically inserted with the same number of pressing rods as the buckling points, and when the rotor punching sheet is blanked, the lower ends of the pressing rods are embedded into the buckling points and abut against the rotor punching sheet.
As a further improvement of the invention, the buckling point female die is internally inserted with a number of ejector rods corresponding to the buckling points, and the buckling point male die, the buckling point female die and the ejector rods are enclosed to form a buckling point forming cavity.
As a further improvement of the counting hole punching machine, the counting hole punching machine further comprises a counting hole station arranged in front of the buckling point station, the counting hole station comprises a counting hole male die and a counting hole female die which are matched with the plurality of groups, the counting hole station is used for punching counting holes which penetrate through the counting hole station up and down, the number and the positions of the counting holes correspond to those of the buckling points, and the counting hole male die can move up and down to enable the counting hole station to work selectively.
As a further improvement of the invention, the shaft hole stations comprise a first shaft hole station and a second shaft hole station which are arranged in front of and behind the wire casing station, and the diameter of the shaft hole punched by the first shaft hole station is larger than that of the shaft hole punched by the second shaft hole station.
As a further improvement of the invention, the first shaft hole station, the counting hole station, the wire groove station, the second shaft hole station, the buckling point station and the blanking station are arranged in sequence.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
1. the utility model provides a rotor punching, it is protruding to set the location of knot point, positioning groove to dislocation eccentric structure ingeniously for rotor punching is when piling up the riveting from top to bottom, and the location arch of top needs the certain angle of circumferential direction rotation just can imbed the positioning groove of below, and then realizes the skew of rotor wire casing, simultaneously, forms the inseparable cooperation that the profile is unanimous between protruding and the positioning groove in location, can effectively guarantee the drawing power between the rotor punching, and the yields of final product is high. In addition, the cylindrical buckling point of the rotor punching sheet can be formed by one-time punching, the structure is simpler, the requirement on machining precision is lower, the production efficiency and the yield are higher, and the applicable rotor product range is wider.
2. The rotor punching sheets are subjected to large-angle rotation and then are subjected to overlapping riveting, so that the balance deflection caused by uneven material thickness distribution can be avoided, the balance effect during rotor rotation is improved, and the time for artificial correction is shortened.
3. Body bottom rotor punching is through setting up the count hole corresponding with the knot position for this rotor punching no longer overlaps with the rotor punching of preceding body and rivets, can realize autosegregation after the body is overlapped and is riveted promptly, and the knot of body is evaginated not, and the later stage need not to carry out knot leveling process again, and production efficiency is higher. In addition, when the rotor is in stack riveting production, the counting hole is punched once, which is equivalent to a body completed by stack riveting, and further the production counting function can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a rotor sheet.
Fig. 2 is a schematic structural diagram of a rotor punching sheet buckling point overlapping rivet.
Fig. 3 is a structural schematic diagram of a rotor riveting die.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is a structural schematic diagram of a male die part of the rotor riveting die.
In the figure, 100, a rotor sheet; 110. a shaft hole; 120. a wire slot; 130. buckling points; 131. a positioning groove; 132. positioning the projection; 140. counting the holes;
10. a first shaft hole station; 20. counting hole stations; 21. counting a hole male die; 22. counting a hole female die; 30. a trunking station; 40. a second shaft hole station; 50. a dotting station; 51. dotting a convex die; 52. buckling a point female die; 53. a top rod; 60. a blanking station; 61. blanking male dies; 62. blanking female dies; 63. a torsion mechanism; 64. a pressure lever; 70. and (6) guiding the station.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 2, the large-rotation skew round-buckle self-riveting rotor includes a body formed by overlapping a plurality of rotor sheets 100, a shaft hole 110 is formed in the center of each rotor sheet 100, a wire casing 120 is formed on the periphery of each rotor sheet 100, four buckling points 130 are circumferentially and uniformly distributed on each rotor sheet 100 by using the shaft hole 110 as the center, each buckling point 130 includes a positioning groove 131 and a positioning protrusion 132, each positioning groove 131 and each positioning protrusion 132 is vertically arranged in a cylindrical shape and is respectively located on the upper side and the lower side of each rotor sheet 100, each positioning protrusion 132 of the latter rotor sheet 100 is embedded with each positioning groove 131 of the former rotor sheet 100 in a one-to-one correspondence manner, and the central axis of each positioning groove 131 horizontally offsets by a preset distance relative to the central axis of the corresponding positioning protrusion 132.
According to the required skew angle of the wire groove 120 of the rotor body and the punching thickness of the positioning protrusion 132 of the fastening point 130, the required horizontal offset distance between the central axes of the positioning groove 131 and the positioning protrusion 132 of each fastening point 130 can be obtained through conversion.
The utility model provides a rotor punching 100, location arch 132 with knot point 130 ingeniously, positioning groove 131 sets to dislocation eccentric structure, make rotor punching 100 when piling up and riveting from top to bottom, the location arch 132 of a back rotor punching 100 needs the certain angle of circumferential rotation just can imbed the positioning groove 131 of a preceding rotor punching 100, and then realize the skew of rotor wire casing 120, form the inseparable cooperation that the profile is unanimous between protruding 132 of location and the positioning groove 131 simultaneously, can effectively guarantee the pull-out force between the rotor punching 100, the yields of end product is high. In addition, the cylindrical fastening point 130 of the rotor punching sheet 100 can be formed by one-time punching, the structure is simpler, the requirement on processing precision is lower, the production efficiency and the yield are higher, and the applicable rotor product range is wider.
The rotation angle of the latter rotor punching sheet 100 relative to the former rotor punching sheet 100 is 91-95 degrees. And the rotor punching sheets 100 are overlapped and riveted after being rotated by a large angle, so that the balance deflection caused by uneven material thickness distribution can be avoided, the balance effect during the rotation of the rotor is improved, and the time for artificial correction is shortened.
It is worth mentioning that a counting hole 140 is vertically formed in the position, corresponding to the buckling point 130, of the rotor punching sheet 100 at the bottom of the body in a penetrating manner, and the counting hole 140 can be used for being embedded into the positioning protrusion 132. Make body bottom rotor punching 100 no longer overlap with the rotor punching 100 of preceding body and rivet, can realize autosegregation after the body is overlapped and is riveted and accomplish promptly, and the knot point 130 of body is not outer protruding, and the later stage need not to detain the flattening process of point 130 again, and production efficiency is higher. In addition, when the rotor is in stack riveting production, the counting hole 140 is punched once, which is equivalent to completing one body in stack riveting, and further playing a role in production counting.
As shown in fig. 3 to 5, the present invention further provides a rotor riveting die, which is used for manufacturing the above-mentioned large-rotation twisted-skew round-buckled self-riveted rotor, and includes a shaft hole station for punching a shaft hole 110 of a rotor sheet 100, a slot station 30 for punching a slot 120 of the rotor sheet 100, a fastening station 50 for punching a fastening point 130 of the rotor sheet 100, and a blanking station 60 for blanking and stacking the riveted rotor sheet 100, where the fastening point 130 punching station includes four sets of fastening point male dies 51 and fastening point female dies 52, the fastening point male dies 51 and the fastening point female dies 52 are respectively arranged in a cylindrical shape, a central axis of each fastening point male die 51 is horizontally offset from a central axis of the corresponding fastening point female die 52 by a preset distance, and a depth of each fastening point male die 51 punching the rotor sheet 100 does not exceed a thickness of the rotor sheet 100.
The blanking station 60 comprises a blanking male die 61, a blanking female die 62 and a torsion mechanism 63 which are matched with each other and drive the blanking female die 62 to rotate, and the torsion mechanism 63 drives the blanking female die 62 to rotate by a preset angle. The blanking female die 62 is internally provided with a locking ring with the inner diameter slightly smaller than the outer diameter of the rotor punching sheet 100, and when the rotor punching sheet 100 is riveted, the locking ring is in interference fit with the rotor punching sheet 100 to provide upward supporting force, so that the rotor punching sheets 100 are attached to each other up and down.
The raw material of the plate is punched by the shaft hole station and the slot station 30 to form the shaft hole 110 and the slot 120 of the rotor punching sheet 100, then 4 cylindrical fastening points 130 are punched at the fastening point station 50, and because the central axes of the fastening point male die 51 and the fastening point female die 52 are horizontally staggered, the central axes of the positioning groove 131 and the positioning protrusion 132 of the cylindrical fastening point 130 are also horizontally staggered, then at the blanking station 60, the raw material of the plate is punched by the blanking male die 61 to form the disc-shaped rotor punching sheet 100, and the rotor punching sheet 100 is pressed into the blanking female die 62, then the blanking female die 62 drives the rotor punching sheet 100 to rotate 91-95 degrees according to the skew requirement of the slot 120, so that the central axis of the rotor punching sheet 100 at the top of the blanking female die 62 is always coaxial with the central axis of the positioning protrusion 132 of the rotor punching sheet 100 to be punched, so as to facilitate the up-, the wire slots 120 of the rotor are naturally skewed.
The structure and the working principle of the blanking station 60 refer to the CN 108746322A-rotor sheet manufacturing method and the mold, which are not described in detail.
The buckling point male die 51 and the buckling point female die 52 of the rotor riveting die are not of conventional upper and lower coaxial concave-convex matching structures, are skillfully arranged to be of a staggered structure, and further punch the cylindrical buckling points 130 into the required staggered structure, so that the wire grooves 120 of the rotor punching sheets 100 after being laminated and riveted are naturally skewed, the conception is ingenious, and the production efficiency is high. And the depth of the punched rotor sheet 100 of the buckling point male die 51 does not exceed the thickness of the rotor sheet 100, so that the shape and the size of the buckling point 130 can meet the requirements, and the buckling point male die 51 and the buckling point female die 52 cannot interfere with each other.
The blanking male die 61 is vertically inserted with four pressing rods 64 corresponding to the fastening points 130, and when the rotor punching sheet 100 is blanked, the lower ends of the pressing rods 64 are embedded into the fastening points 130 and abut against the rotor punching sheet 100. That is to say, during blanking, the blanking male die 61 is completely attached to the upper surface of the rotor sheet 100, and the buckling point 130 is not easily deformed during the blanking process, so as to ensure the drawing force of the rotor.
Similarly, four ejector rods 53 corresponding to the buckling points 130 are inserted into the buckling point female die 52, and a buckling point 130 forming cavity is formed by enclosing the buckling point male die 51, the buckling point female die 52 and the ejector rods 53. The ejector rod 53 is arranged so as to control the punching thickness of the positioning protrusion 132 of the buckling point 130, and the consistency of the shape and the size of the buckling point 130 is ensured.
In this application, still including setting up the count hole station 20 before the knot point station 50, count hole station 20 includes count hole terrace die 21, the count hole terrace die 22 with the four group's adaptations, count hole station 20 is used for punching the count hole 140 that runs through from top to bottom, and the quantity and the position of count hole 140 correspond with the quantity and the position of knot point 130, and count hole terrace die 21 can move about from top to bottom so that count hole station 20 selectivity work.
When the counting hole male die 21 descends, the counting hole station 20 is in a working state, 4 counting holes 140 which penetrate through up and down are punched in the counting hole station 20 by the plate raw materials, and the positions of the counting holes 140 are completely consistent with those of the buckling point male die 51 at the subsequent buckling point station 50, so that the buckling point station 50 is equivalent to no working.
When the counting hole male die 21 rises, the counting hole station 20 is in a non-working state, the plate raw material is not punched at the buckling point station 50, and the buckling point 130 is formed by punching at the buckling point station 50.
The structure for controlling the counting hole male die 21 to move up and down is referred to CN201120372053.8 as a pneumatic device for selectively punching the die, and is not described in detail herein.
Body bottom rotor punching 100 is through setting up count hole 140 and no longer fold with the rotor punching 100 of preceding body and rivets, can realize autosegregation after the body is folded and rivets the completion promptly, and the knot point 130 of body is not outer protruding, and the later stage need not to carry out knot point 130 flattening process again, and production efficiency is higher. In addition, when the rotor is in stack riveting production, the counting hole 140 is punched once, which is equivalent to completing one body in stack riveting, and further playing a role in production counting.
Preferably, the shaft hole stations comprise a first shaft hole station 10 and a second shaft hole station 40 which are arranged in front of and behind the wire casing station 30. Furthermore, in the rotor riveting die, a first shaft hole station 10, a counting hole station 20, a wire groove station 30, a second shaft hole station 40, a buckling point station 50 and a blanking station 60 are sequentially arranged.
Set up primary shaft hole station 10, count hole station 20 before wire casing station 30, can avoid warping because of the product that wire casing 120 punching technology leads to, effectively guarantee shaft hole 110, count hole 140's precision, and lie in wire casing station 30 after set up secondary shaft hole station 40, can correct the shaft hole 110 deformation that leads to because of wire casing 120 punching.
Further, a guide station 70 is arranged in front of the first shaft hole station 10, the plate raw material is punched into a guide hole in the guide station 70, and positioning pins penetrating through the guide hole are arranged on the subsequent shaft hole station, the buckling point station 50 and the like, so that the positioning accuracy of the plate raw material during punching is ensured.
The forming steps of the rotor body in the rotor riveting die are as follows:
s1: the plate raw materials are conveyed to a first shaft hole station 10 step by step, and a shaft hole 110 is punched at the first shaft hole station 10;
s2: the plate raw materials are conveyed to a counting hole station 20 in a stepping mode, and the counting hole station 20 can selectively work;
s3: the plate raw materials are conveyed to a wire casing station 30 step by step, and the wire casing station 30 punches a plurality of wire casings 120 which are uniformly distributed in the circumferential direction;
s4: the plate raw materials are conveyed to a second shaft hole station 40 step by step, and the second shaft hole station 40 corrects the shaft hole 110;
s5: the plate raw material is delivered to a point-buckling station 50 step by step, the point-buckling station 50 comprises 4 groups of matched point-buckling male dies 51 and point-buckling female dies 52, and the central axes of the corresponding buckling point male die 51 and the corresponding buckling point female die 52 are horizontally deviated by a preset distance, the buckling point male die 51 and the buckling point female die 52 are respectively arranged in a cylindrical shape, and the central axis of the dotting punch 51 is horizontally offset by a preset distance with respect to the central axis of the corresponding dotting die 52, the punching depth of the buckling point male die 51 into the rotor punching sheet 100 does not exceed the thickness of the rotor punching sheet 100, 4 cylindrical buckling points 130 are punched at the buckling point station 50, each buckling point 130 comprises a positioning groove 131 and a positioning protrusion 132, the positioning grooves 131 and the positioning protrusions 132 are vertically arranged in a cylindrical shape and are respectively positioned on the upper side and the lower side of the rotor punching sheet 100, and the central axis of each buckling point 130 positioning groove 131 horizontally offsets a preset distance relative to the central axis of the corresponding positioning protrusion 132;
s6: the method comprises the following steps that plate raw materials are conveyed to a blanking station 60 in a stepping mode, wherein the blanking station 60 comprises a blanking male die 61, a blanking female die 62 and a torsion mechanism 63, the blanking male die 61, the blanking female die 62 and the torsion mechanism 63 are matched, the blanking female die 62 drive the blanking female die 62 to rotate, the blanking station 60 punches the plate raw materials into a disc-shaped rotor punching sheet 100, the rotor punching sheet 100 is pressed into the blanking female die 62 and is overlapped and riveted with the previous rotor punching sheet 100 through a buckling point 130, and the torsion mechanism 63 drives the blanking;
s7: repeating the steps S1 to S6N times, and when the number 1 is reached, working at the counting hole station 20 in the step S2, punching 4 counting holes 140 in the plate raw material, and correspondingly embedding 4 counting holes 140 in 4 dotting convex dies 51 in the step S5; in the 2 nd to the nth time, the counting hole station 20 does not work in the step S2, and in the step S5, 4 fastening points 130 are punched on the plate material;
s8: and the finished product after the stack riveting is sent out along the bottom of the blanking female die 62.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a big gyration skew circle is buckled and is riveted rotor certainly, body that forms including a plurality of rotor punching coincide, the shaft hole has been seted up at every rotor punching's center, the wire casing is seted up to every rotor punching's periphery, and every rotor punching uses the shaft hole to have a plurality of knot points as central circumference equipartition, a serial communication port, every knot point includes positioning groove and location arch, positioning groove, the location arch all is vertical cylindrical setting and lies in rotor punching upper and lower both sides respectively, the location arch of a back rotor punching and the positioning groove one-to-one gomphosis of a preceding rotor punching, the central axis of every positioning groove is for corresponding the bellied central axis horizontal migration of location and predetermines the distance.
2. The large-rotation skew round-button self-riveting rotor as claimed in claim 1, wherein: each rotor punching sheet is provided with four buckling points, and the latter rotor punching sheet rotates 91 degrees to 95 degrees relative to the former rotor punching sheet.
3. The large-rotation skew round-button self-riveting rotor as claimed in claim 1, wherein: the counting hole is formed in the position, corresponding to the buckling point, of the rotor punching sheet at the bottom of the body in a vertical penetrating mode, and the counting hole can be used for being embedded into the positioning protrusion.
4. A rotor riveting die is characterized by being used for manufacturing the large-rotation skew round-buckle self-riveting rotor as claimed in any one of claims 1 to 3, and comprising a shaft hole station for punching a shaft hole of a rotor punching sheet, a wire slot station for punching a wire slot of the rotor punching sheet, a buckling point station for punching a buckling point of the rotor punching sheet, and a blanking station for blanking and overlapping the riveted rotor punching sheet, wherein the buckling point station comprises a buckling point male die and a buckling point female die which are matched in a plurality of groups, the buckling point male die and the buckling point female die are respectively in cylindrical arrangement, the central axis of the buckling point male die horizontally deviates for the central axis of the corresponding buckling point female die by a preset distance, and the depth of the buckling point male die punching the rotor punching sheet is not more than the thickness of the rotor.
5. The rotor riveting press die according to claim 4, wherein the blanking station comprises a blanking male die, a blanking female die and a torsion mechanism, the blanking male die and the blanking female die are matched, the torsion mechanism drives the blanking female die to rotate by a preset angle.
6. The rotor riveting die according to claim 4, wherein the blanking male die is vertically inserted with a number of pressing rods corresponding to the fastening points, and when the rotor punching sheet is blanked, the lower ends of the pressing rods are embedded into the fastening points and abut against the rotor punching sheet.
7. The rotor riveting press mold according to claim 4, wherein the buckling point female mold is internally inserted with a number of ejector rods corresponding to the buckling points, and the buckling point male mold, the buckling point female mold and the ejector rods are enclosed to form a buckling point forming cavity.
8. The rotor pressure riveting die of claim 4, further comprising a counting hole station arranged before the buckling point station, wherein the counting hole station comprises a counting hole male die and a counting hole female die which are matched with the plurality of groups, the counting hole station is used for punching counting holes which penetrate through the counting hole station from top to bottom, the number and the positions of the counting holes correspond to those of the buckling points, and the counting hole male die can move up and down to enable the counting hole station to selectively work.
9. The rotor riveting press mold according to claim 8, wherein the shaft hole stations comprise a first shaft hole station and a second shaft hole station which are arranged in front of and behind the wire casing station.
10. The rotor riveting press die of claim 9, wherein the first shaft hole station, the counting hole station, the wire groove station, the second shaft hole station, the point-fastening station and the blanking station are arranged in sequence.
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|---|---|---|---|
| CN202010538057.2A CN111817462B (en) | 2020-06-12 | 2020-06-12 | Large-rotation skew round buckle self-riveting rotor and rotor press-riveting die |
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| CN202010538057.2A CN111817462B (en) | 2020-06-12 | 2020-06-12 | Large-rotation skew round buckle self-riveting rotor and rotor press-riveting die |
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| CN111817462B CN111817462B (en) | 2021-11-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910159A (en) * | 1982-07-07 | 1984-01-19 | Hitachi Ltd | Manufacture of core for die cast rotor |
| JPH04344139A (en) * | 1991-05-21 | 1992-11-30 | Mitsui High Tec Inc | Laminated core for squirrel-cage type rotor |
| CN110089005A (en) * | 2016-12-20 | 2019-08-02 | 株式会社电装 | The rotor and rotating electric machine of rotating electric machine |
| CN212381002U (en) * | 2020-06-12 | 2021-01-19 | 卓尔博（宁波）精密机电股份有限公司 | Large-rotation skew round buckle self-riveting rotor and rotor press-riveting die |
-
2020
- 2020-06-12 CN CN202010538057.2A patent/CN111817462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910159A (en) * | 1982-07-07 | 1984-01-19 | Hitachi Ltd | Manufacture of core for die cast rotor |
| JPH04344139A (en) * | 1991-05-21 | 1992-11-30 | Mitsui High Tec Inc | Laminated core for squirrel-cage type rotor |
| CN110089005A (en) * | 2016-12-20 | 2019-08-02 | 株式会社电装 | The rotor and rotating electric machine of rotating electric machine |
| CN212381002U (en) * | 2020-06-12 | 2021-01-19 | 卓尔博（宁波）精密机电股份有限公司 | Large-rotation skew round buckle self-riveting rotor and rotor press-riveting die |
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| CN111817462B (en) | 2021-11-30 |
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