WO2023030149A1

WO2023030149A1 - Method for forming silicon steel block for rotor of switched reluctance motor

Info

Publication number: WO2023030149A1
Application number: PCT/CN2022/114703
Authority: WO
Inventors: 孙显旺; 陈翾
Original assignee: 浙江盘毂动力科技有限公司
Priority date: 2021-08-31
Filing date: 2022-08-25
Publication date: 2023-03-09
Also published as: CN113676005A; CN113676005B

Abstract

The present invention provides a method for forming a silicon steel block for a rotor of a switched reluctance motor, comprising (a) providing a silicon steel sheet disc, the silicon steel sheet disc having an inner end portion and an outer end portion and a plurality of fixing holes passing through the inner end portion and the outer end portion, and a silicon steel block being formed between two adjacent fixing holes; (b) providing a plurality of tooth bars, and sequentially inserting the plurality of tooth bars into the fixing holes one by one; (c) providing a fixing assembly, and fixing the fixing assembly onto the inner end portion and the outer end portion; and (d) cutting along cutting positions defined between the silicon steel blocks and the fixing holes to obtain a plurality of silicon steel blocks for assembling the rotor. The silicon steel sheet disc is divided into the plurality of silicon steel blocks having the same shape by means of the fixing holes, the plurality of silicon steel blocks are separated by cutting and can be correspondingly assembled into a rotor, such that forming is convenient and quick, and the consistency of the shape of products is guaranteed, thereby realizing industrial batch production.

Description

A method for forming an axial switched reluctance motor rotor silicon steel block

technical field

The invention relates to the field of motors, in particular to a method for forming a rotor silicon steel block of an axial switched reluctance motor.

Background technique

Axial switched reluctance motors are simple, energy-efficient electromagnetic devices. In particular, axial switched reluctance motors are widely used in electric vehicles, general industries, and home appliances due to their small axial size, high torque-to-inertia ratio, high power density, and high efficiency.

Existing axial switched reluctance motors generally use silicon steel sheets as the lamination material of the stator and rotor. Taking the rotor as an example, silicon steel sheets are punched to form multiple sheets of different widths, and then the sheets are sequentially pressed according to the width. The larger method is stacked to form a plurality of fan-shaped tooth blocks of the same shape, and finally the multiple tooth blocks are arranged on the rotor frame in an annular interval, and the multi-layer sheets of each tooth block are arranged along the radial direction of the rotor frame. to get the rotor. However, multiple sheets are formed by centralized stamping, which is not conducive to the subsequent classification of the sheets that make up the fan-shaped tooth block, which in turn affects the forming efficiency of the rotor. In addition, the tooth block formed by stacking multiple sheets, The consistency of the product cannot be guaranteed, and thus industrialized mass production cannot be carried out.

Contents of the invention

In order to solve the above problems, the present invention provides a method for forming a rotor silicon steel block of an axial switched reluctance motor that effectively improves the forming efficiency of the rotor silicon steel block and realizes industrialized mass production.

The invention provides a method for forming a rotor silicon steel block of an axial switched reluctance motor, comprising:

(a) providing a silicon steel disc, wherein the silicon steel disc has an inner end and an outer end, and a plurality of fixing holes passing through the inner end and the outer end, and the plurality of fixing holes are along the Arranged at equidistant intervals along the circumference of the silicon steel discs, and a silicon steel block is formed between two adjacent fixing holes;

(b) providing a plurality of toothed rods, and inserting the plurality of toothed rods into the fixing holes one by one;

(c) providing a solid assembly, securing said solid assembly to said inner end and said outer end;

(d) cutting along the cutting position defined between the silicon steel block and the fixing hole to obtain a plurality of silicon steel blocks for assembling the rotor.

As a preferred technical solution, the step (a) further includes:

(a1) Stamping silicon steel sheet by a stamping equipment;

(a2) Rolling the stamped silicon steel sheet at the same angular velocity by a rolling device to form the silicon steel sheet disc.

As a preferred technical solution, the stamped silicon steel sheet has a plurality of holes arranged at intervals, and a substrate located between two adjacent holes, and then in the step (a2), a plurality of The substrate is rolled one by one to form a plurality of silicon steel blocks arranged in a ring, and the holes are rolled one by one to form a plurality of fixing holes arranged in a ring and spaced apart from the silicon steel blocks.

As a preferred technical solution, the left and right sides of the substrate are respectively recessed inward to form limiting parts, and furthermore, in the structure of each silicon steel block, a plurality of limiting parts on both sides of the substrate are formed separately. Limiting slots on both sides of the silicon steel block.

As a preferred technical solution, the silicon steel disc also has an upper end and a lower end, and the upper end and/or the lower end are provided with a guide groove opposite to the cutting position, and then in the step (d ), cut along the guide groove.

As a preferred technical solution, the upper side and/or lower side of the silicon steel sheet are recessed to form a plurality of guide parts, and the guide parts are opposite to the cutting position, and then in the step (a2), a plurality of the The guide parts are rolled one by one to form guide grooves exposed on the upper end part and/or the lower end part.

As a preferred technical solution, the fixing hole is located in the middle of the upper end and the lower end, and the ratio of the width of the fixing hole to the thickness of the silicon steel disc is greater than or equal to 1/2.

As a preferred technical solution, in each of the silicon steel block structures, a plurality of the substrates are laminated along the radial direction of the silicon steel sheet disk and in a manner of gradually increasing width to form the silicon steel block, and the substrates The sheet has an arc-shaped structure, the inner side of the silicon steel block is an arc-shaped groove, and the outer side of the silicon steel block is an arc-shaped protrusion.

As a preferred technical solution, the solid assembly includes an internal solid and an external solid, and the step (c) further includes:

(c1) fixing the inner solid part on the inner end;

(c2) Fixing the external fixing member on the outer end.

As a preferred technical solution, the external solid part includes two clamps, and the step (c2) further includes:

Tighten the two clamps on the outer ends.

Compared with the prior art, this technical solution has the following advantages:

The silicon steel disc is separated into a plurality of trapezoidal silicon steel blocks with the same shape through the fixing holes, and the multiple silicon steel blocks are separated by cutting and can be assembled into a rotor correspondingly, which solves the problem of sheet material in the prior art. Problems that are not easy to classify are not only convenient and quick to form, but also effectively improve the forming efficiency of the rotor. In addition, the silicon steel block is pressurized in the circumferential direction by the tooth bars on both sides, so as to eliminate the rebound stress in the circumferential direction of the silicon steel block during cutting, and the silicon steel block is radially pressed by the solid component. Apply pressure to the opposite side to eliminate the radial springback stress of the silicon steel block during cutting, so that the surroundings of the silicon steel block are fixed to prevent deformation of the silicon steel block after cutting, thereby ensuring the consistency of the product shape To achieve industrialized mass production.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the flowchart of the molding method of axial switched reluctance motor rotor silicon steel block of the present invention;

Fig. 2 is the structural representation of the silicon steel disc of the present invention;

Fig. 3 is the structural representation of silicon steel sheet of the present invention;

Fig. 4 is a schematic structural view of the rack of the present invention;

Fig. 5 is a structural schematic diagram of the assembly of the solid component and the silicon steel disc according to the present invention;

Fig. 6 is a schematic diagram of the structure of the cut silicon steel block according to the present invention.

In the figure: 100 silicon steel disc, 1000 silicon steel sheet, 1001 inner end, 1002 outer end, 1003 upper end, 1004 lower end, 1100 hole, 1200 substrate, 1210 limiter, 1300 guide, 110 fixing hole , 120 silicon steel blocks, 121 limit slots, 130 guide slots, 200 tooth rods, 300 solid components, 310 internal solid parts, 320 external solid parts, 321 clamps, 322 fasteners.

Detailed ways

The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

As shown in Figures 1 to 6, the forming method of the rotor silicon steel block of the axial switched reluctance motor includes:

(a) providing a silicon steel disc 100, wherein the silicon steel disc 100 has an inner end 1001 and an outer end 1002, and a plurality of fixing holes 110 passing through the inner end 1001 and the outer end 1002, A plurality of the fixing holes 110 are arranged at equidistant intervals along the circumference of the silicon steel disc 100, and a silicon steel block 120 is formed between two adjacent fixing holes 110;

(b) providing a plurality of toothed rods 200, and inserting the plurality of toothed rods 200 into the fixing holes 110 one by one;

(c) provide a solid component 300, and fix the solid component 300 on the inner end 1001 and the outer end 1002;

(d) cutting along the cutting position defined between the silicon steel block 120 and the fixing hole 110 to obtain a plurality of silicon steel blocks 120 for assembling the rotor.

The silicon steel disc 100 is separated into a plurality of trapezoidal silicon steel blocks 120 with the same shape through the fixing holes 110. The multiple silicon steel blocks 120 are separated by cutting and can be assembled into a rotor correspondingly, which solves the problem of existing The problem that sheet materials are not easy to be classified in the technology is not only convenient and quick to form, but also effectively improves the forming efficiency of the rotor. In addition, the silicon steel block 120 carries out circumferential relative pressure through the tooth bars 200 on both sides, so as to eliminate the circumferential rebound stress of the silicon steel block 120 during the cutting process, and the silicon steel block 120 passes through the solid Type components 300 carry out radial relative pressure to eliminate the radial springback stress of the silicon steel block 120 during the cutting process, so that the surroundings of the silicon steel block 120 are fixed and prevent the silicon steel block 120 from occurring after cutting. deformation, thereby ensuring the consistency of product shape and realizing industrialized mass production.

As shown in Fig. 1 to Fig. 3, described step (a) further comprises:

(a1) stamping silicon steel sheet 1000 by a stamping equipment;

(a2) Rolling the stamped silicon steel sheet 1000 at the same angular velocity by a rolling device to form the silicon steel sheet disc 100 .

The silicon steel sheet disc 100 is formed by winding the silicon steel sheet 1000, and the silicon steel sheet 1000 is stamped before winding to form the fixing holes 110, etc., which is not only convenient and quick to form, but also conducive to industrialization Mass production. The silicon steel sheets 1000 are bonded together during the rolling process by hanging glue or the like to form the silicon steel sheet disc 100 .

Wherein the silicon steel disc 100 is ring-shaped, its axial dimension is small, it has the inner end 1001 and the outer end 1002 located in the radial direction and opposite, and has an upper end located in the axial direction and opposite 1003 and lower end 1004.

As shown in Figure 3, the stamped silicon steel sheet 1000 has a plurality of holes 1100 arranged at intervals, and a substrate 1200 between two adjacent holes 110, and then in the step (a2) Among them, a plurality of the substrates 1200 are rolled one by one to form a plurality of circularly arranged silicon steel blocks 120, and a plurality of the hole portions 1100 are rolled one by one to form a plurality of annular arrangements, and are spaced apart from the silicon steel blocks 120. The fixing hole 110 .

Specifically, the stamping equipment provides a punch die, and stamps on the silicon steel sheet 1000 , so that the stamped silicon steel sheet 1000 has the holes 1100 and the substrate 1200 arranged at intervals. Wherein the shape of the hole 1100 remains consistent, but the shape of the substrate 1200 is inconsistent. In detail, since the silicon steel block 120 is trapezoidal, and the top of the trapezoidal silicon steel block 120 is an arc-shaped groove, the The bottom of the trapezoidal shape of the silicon steel block 120 is convex, and it can be seen that the multi-layer substrate 1200 forming the silicon steel block 120 is along the height direction of the trapezoid (that is, from the inner end 1001 to the outer end) in a gradually increasing width. 1002 direction), so the shape of the substrate 1200 is inconsistent.

To further illustrate, take five silicon steel blocks 120 as an example, wherein the number of the fixing holes 110 is consistent with the number of the silicon steel blocks 120 and are arranged at intervals in sequence. In the step (a1), the punching equipment continuously punches the silicon steel sheet 1000 six times with the first width, so as to form five holes 1100 arranged at intervals on the silicon steel sheet 1000, so that all Five substrates 1200 of the first width are formed on the silicon steel sheet 1000, and then in the step (a2), the rolling equipment rolls the five substrates 1200, and makes the five substrates 1200 The substrates 1200 are sequentially connected in a circular arrangement, and at the same time, the stamping equipment continues the silicon steel sheet 1000 five times with the second width to form five spaced holes 1100 on the silicon steel sheet 1000, so that Five substrates 1200 of the second width are formed on the silicon steel sheet 1000, and then the five substrates 1200 of the second width are rolled out of the five substrates 1200 of the first width by rolling equipment, and one One-to-one correspondence, reciprocating in this way, to form the silicon steel disc 100 as shown in FIG. 2 .

To further illustrate, the second width is greater than the first width, so that in the structure of each silicon steel block 120, a plurality of the substrates 1200 are along the radial direction of the silicon steel disk 100 and gradually increase in width. Larger ways are laminated to form the silicon steel block 120 .

It should be noted that the rolling equipment rolls the stamped silicon steel sheet 1000 at the same angular velocity, so that the multiple substrates 1200 of each silicon steel block 120 can correspond one-to-one to prevent displacement deviation However, the forming effect of the silicon steel block 120 is affected.

As shown in Figures 2 and 3, the hole 1100 is located in the middle of the upper and lower sides of the silicon steel sheet 1000, that is, the formed fixing hole 110 is located in the middle of the upper end 1003 and the lower end 1004, And the ratio of the width of the fixing hole 110 to the thickness of the silicon steel sheet disk 100 is greater than or equal to 1/2, and the teeth are added under the condition that the fixing hole 110 does not affect the structural stability of the silicon steel sheet disk 100. The contact area between the rod 200 and the silicon steel block 120 can further increase the pressure of the toothed rod 200 on the silicon steel block 120 , and further prevent the deformation of the silicon steel block 120 during cutting. Wherein the width of the fixing hole 110 refers to the dimension of the fixing hole 110 in the axial direction of the silicon steel disc 100, and the silicon steel disc 100 is defined between the upper end 1003 and the lower end 1004. thickness.

As shown in FIGS. 2 and 3 , the left and right sides of the substrate 1200 are respectively indented to form stoppers 1210 , and in the structure of each silicon steel block 120 , multiple sides of the substrate 1200 The limiting portions 1210 of the silicon steel block 120 respectively form limiting grooves 121 provided on both sides of the silicon steel block 120 .

The two limiting grooves 121 are arranged along the circumference of the silicon steel plate 100 and are respectively arranged on two sides of the silicon steel block 120 . Wherein the silicon steel block 120 is fixed on the rotor frame by the limiting slot 121 to prevent the silicon steel block 120 from moving axially on the rotor frame. The limiting part 1210 is formed together with the hole part 1100, and the limiting groove 121 is formed on both sides of the silicon steel block 120 in the circumferential direction by rolling, so that the forming of the limiting groove 121 is more convenient. Faster, compared to forming the limiting groove 121 by stamping after the silicon steel block 120 is formed, it ensures the reliability of the overall formation of the silicon steel block 120 and avoids affecting the consistency of the product.

Specifically, referring to FIG. 3 , the limiting portion 1210 communicates with the hole portion 1100 , and the two sides of each hole portion 1100 correspond to a limiting portion 1210 . It can be seen that the punch die corresponds to A hole portion 1100 and the limiting portions 1210 respectively arranged on both sides of the hole portion 1100, that is, after the punch die is stamped on the silicon steel sheet 1000, the hole portion 1100 as shown in FIG. 3 is formed. and the limiting part 1210 respectively arranged on both sides of the hole 1100, and in the subsequent rolling process, the limiting part 1210 forms the limiting groove 121 provided on the silicon steel block 120 . It can be seen that the limiting groove 121 extends from the inner end portion 1001 to the outer end portion 1002 , that is, runs through each of the substrates 1200 referring to FIG. 2 .

More specifically, the limiting portion 1210 is semicircular and located in the middle of the substrate 1200 , it can be seen that the formed limiting groove 121 is located in the middle of the silicon steel block 120 .

As shown in Figure 2, the silicon steel sheet disc 100 also has an upper end 1003 and a lower end 1004, the upper end 1003 and/or the lower end 1004 are provided with a guide groove 130 opposite to the cutting position, and then In the step (d), cutting is performed along the guide groove 130 . By setting the guide groove 130, the silicon steel block 120 can be kept consistent after cutting, and then industrialized mass production can be carried out.

The guide groove 130 extends from the inner end 1001 to the outer end 1002. In one embodiment, each silicon steel block 120 corresponds to four guide grooves 130, two of which are guide The grooves 130 respectively correspond to the left side of the silicon steel block 120, and are respectively arranged on the upper end portion 1003 and the lower end portion 1004, and the other two guide grooves 130 respectively correspond to the right sides of the silicon steel block 120, and are respectively arranged on the upper end portion 1003 and the lower end portion 1004. on the upper end portion 1003 and the lower end portion 1004. By setting guide grooves 130 on both the upper end 1003 and the lower end 1004, no matter how the silicon steel sheet disk 100 is positioned, it is possible to follow the guide grooves on the upper end 1003 and the lower end 1004 130 for cutting.

In another embodiment, the silicon steel block 120 corresponds to the two guide grooves 130 respectively, and the two guide grooves 130 respectively correspond to the left and right sides of the silicon steel block 120 and are located on the upper end 1003 , so the silicon steel disc 100 is positioned. The upper end portion 1003 is arranged upward so as to pass through the guide groove 130 of the upper end portion 1003 for cutting.

As shown in Figures 2 and 3, the upper and/or lower sides of the silicon steel sheet 1000 are recessed to form a plurality of guides 1300, and the guides 1300 are opposite to the cutting position, and then in the step (a2) Among them, a plurality of the guide parts 1300 are rolled one by one to form the guide grooves 130 exposed on the upper end part 1003 and/or the lower end part 1004 .

The guide part 1300 can be formed together with the limiting part 1210 and the hole part 1100 respectively, and the guide groove 130 exposed on the upper end part 1003 and/or the lower end part 1004 is formed by rolling. This makes the forming of the guide groove 130 more convenient and quick, and ensures consistency. Specifically, each punch die corresponds to one hole 1100 , two stoppers 1210 on both sides of the hole 1100 , and four stoppers 1210 on both sides of the hole 1100 . The guide part 1300, that is, after the stamping die stamps the silicon steel sheet 1000 once, the silicon steel sheet 1000 forms the opposite hole 1100, the two limiting parts 1210 and the four guide part 1300 .

Referring to FIG. 2 , the cutting position refers to the joint between the silicon steel block 120 and the fixing hole 110 , specifically corresponding to the left and right side edges of the silicon steel block 120 , that is, along the left and right edges of the silicon steel block 120 . The edge is cut to obtain the cut silicon steel block 120 . Referring to FIG. 3 , in the guide part 1300 formed by stamping on the silicon steel sheet 1000 and opposite to the cutting position, the guide part 1300 is located at the left and right edges of the substrate 1200 , and its cross section may be square Or circular, etc., are not limited here.

As shown in FIG. 2 , in each structure of the silicon steel block 120 , a plurality of the substrates 1200 are laminated along the radial direction of the silicon steel sheet disk 100 and gradually increasing in width to form the silicon steel block 120 , Furthermore, the substrate 1200 has an arc-shaped structure, the inner side of the silicon steel block 120 is an arc-shaped groove, and the outer side of the silicon steel block 120 is an arc-shaped protrusion.

As shown in Fig. 2 and Fig. 4, the cross-sectional shape of the tooth bar 200 is consistent with that of the fixing hole 110, for example, both are rectangular. When the tooth bar 200 is inserted into the fixing hole 110, the adjacent The silicon steel blocks 120 apply pressure to prevent the silicon steel blocks 120 from being deformed due to cutting. The gear bar 200 can be assembled with the silicon steel disc 100 manually or automatically.

Specifically, the toothed rod 200 is flush with the inner end 1001 and the outer end 1002 respectively, so as to facilitate the fixation of both by the solid component 300 . One end of the toothed bar 200 is an arc-shaped groove, which is flush with the inner end 1001, and the other end of the toothed bar 200 is an arc-shaped convex portion or substantially horizontal, so as to be flush with the outer end 1002. flat.

Wherein the fixation of the inner end 1001 and the outer end 1002 by the solid component 300 can be done manually or automatically, for example, after the assembly of the toothed rod 200 and the silicon steel disc 100 is completed, a manipulator is used to Put the solid component 300 on the inner end 1001 and the outer end 1002 , and provide a moving function through the conveyor belt, etc., so as to realize automatic operation and improve the molding efficiency.

As shown in Figure 5, the solid component 300 includes an inner solid part 310 and an outer solid part 320, and then the step (c) further includes:

(c1) fixing the inner solid part 310 on the inner end 1001;

(c2) Fix the external solid part 320 on the outer end part 1002 .

The inner solid part 310 is annular and is used to apply pressure to the inner end 1001, and the outer solid part 320 can also be annular and is used to apply pressure to the outer end 1002, thereby exerting pressure on the inner end 1001. The radial pressure of the silicon steel block 120 is applied to eliminate the springback stress in the radial direction of the silicon steel block 120 during the cutting process, thereby ensuring the consistency of the shape of the product and realizing industrialized mass production. In addition, the inner solid part 310 and the outer solid part 320 fix the rack bar 200 at the same time, ensuring that the rack bar 200 presses the silicon steel block 120 in the circumferential direction.

Continuing to refer to FIG. 5, the external solidification member 320 includes two clips 321, and the step (c2) further includes:

Fasten the two clips 321 on the outer end 1002 and lock them with fasteners 322 .

In the step (d), the silicon steel disc 100 can be cut by laser or wire cutting.

Taking laser cutting as an example, after the assembly of the solid component 300 and the silicon steel disc 100 is completed, it is transported to the laser cutting equipment and cut along the guide groove 130 to obtain multiple rotors assembled into the same rotor. Silicon steel block 120.

After said step (d), further comprise the following steps:

A plurality of the silicon steel blocks 120 on the same silicon steel sheet disk 100 are blanked, transported to the rotor forming place and assembled with the rotor frame to form the rotor.

The blanking of the silicon steel block 120 includes: removing the solid component 300 to release the radial force exerted by the fixing component 300 on the silicon steel disc 100, and the silicon steel block 120 after cutting It exists independently and can carry out corresponding blanking.

The removed solid component 300 and the rack 200 can be recycled.

It can be seen that a plurality of silicon steel blocks 120 on the same silicon steel sheet disk 100 can be assembled into a rotor correspondingly, so the silicon steel sheet can be designed and formulated according to the requirements of the rotor (including the number and size of the silicon steel blocks 120, etc.). The disk 100 structure further facilitates the classification and arrangement of the silicon steel blocks 120 and improves the forming efficiency of the rotor.

To sum up, the silicon steel disc 100 is separated into a plurality of trapezoidal silicon steel blocks 120 with the same shape through the fixing holes 110. The multiple silicon steel blocks 120 are separated by cutting and can be assembled into a rotor correspondingly. , which solves the problem that the sheet materials are not easy to be classified in the prior art, not only the forming is convenient and fast, but also the forming efficiency of the rotor is effectively improved. In addition, the silicon steel block 120 carries out circumferential relative pressure through the tooth bars 200 on both sides, so as to eliminate the circumferential rebound stress of the silicon steel block 120 during the cutting process, and the silicon steel block 120 passes through the solid Type components 300 carry out radial relative pressure to eliminate the radial springback stress of the silicon steel block 120 during the cutting process, so that the surroundings of the silicon steel block 120 are fixed and prevent the silicon steel block 120 from occurring after cutting. deformation, thereby ensuring the consistency of product shape and realizing industrialized mass production.

As shown in Figures 2 to 6, the semi-finished forming structure of the rotor silicon steel block of the axial switched reluctance motor includes:

A silicon steel sheet disk 100, the silicon steel sheet disk 100 has an inner end 1001 and an outer end 1002, and a plurality of fixing holes 110 passing through the inner end 1001 and the outer end 1002, and a plurality of the fixing holes 110 The holes 110 are arranged at equal intervals along the circumference of the silicon steel disc 100, and a silicon steel block 120 is formed between two adjacent fixing holes 110;

A plurality of toothed rods 200, one toothed rod 200 is respectively inserted into each of the fixing holes 110;

A solid component 300 , the solid component 300 is fixed on the inner end 1001 and the outer end 1002 .

As shown in FIG. 2 and FIG. 6 , the silicon steel block 120 is trapezoidal, and the silicon steel block 120 is formed by stacking a plurality of substrates 1200 with different widths along the height direction of the trapezoid. The substrate 1200 has an arc-shaped structure, the trapezoidal bottom of the silicon steel block 120 has an arc-shaped protrusion, and the trapezoidal top of the silicon steel block 120 has an arc-shaped groove. After being assembled with the rotor frame, the sheet-shaped rotor (that is, the axial dimension is small) is formed to adapt to the axial switched reluctance motor. In the rotor structure, the arrangement direction of the plurality of substrates 1200 is consistent with the radial direction of the rotor.

As shown in FIG. 2 and FIG. 6 , the limiting grooves 121 on both sides of the silicon steel block 120 respectively pass through each of the substrates 1200 . Wherein the silicon steel block 120 is fixed on the rotor frame by the limiting slot 121 to prevent the silicon steel block 120 from moving axially on the rotor frame.

As shown in Figure 2, the silicon steel sheet disc 100 also has an upper end 1003 and a lower end 1004, the upper end 1003 and/or the lower end 1004 are provided with a guide groove 130, the guide groove 130 is connected to the The cutting position defined between the silicon steel block 120 and the fixing hole 110 is opposite.

By setting the guide groove 130, the silicon steel block 120 can be kept consistent after cutting, and then industrialized mass production can be carried out.

As shown in Figures 2 and 4, one end of the toothed bar 200 is an arc-shaped groove, which is flush with the inner end 1001, and the other end of the toothed bar 200 is an arc-shaped convex portion or substantially horizontal, so as to flush with the outer end 1002 .

The cross-sectional shape of the tooth bar 200 is consistent with that of the fixing hole 110, for example, both are rectangular. When the tooth bar 200 is inserted into the fixing hole 110, it can exert pressure on the adjacent silicon steel block 120 to prevent The silicon steel blocks 120 are deformed by cutting. And the two ends of the toothed bar 200 are flush with the inner end 1001 and the outer end 1002 respectively, so that the solid component 300 can radially fix the toothed bar 200 at the same time, so as to ensure the The tooth bar 200 exerts pressure on the silicon steel block 120 .

As shown in Figure 5, the solid component 300 includes an inner solid part 310 and an outer solid part 320, the inner solid part 310 is fixed on the inner end 1001, and the outer solid part 320 is fixed on the outer end 1002 .

Specifically, the external fixing member 320 includes two clamps 321 , and the two clamps 321 are clamped on the outer end 1002 and locked by a locking member 322 .

As shown in FIG. 2, the fixing hole 110 is located in the middle of the upper end 1003 and the lower end 1004, and the ratio of the width of the fixing hole 110 to the thickness of the silicon steel disc 100 is greater than or equal to 1/2 .

Under the condition that the fixing hole 110 does not affect the structural stability of the silicon steel disc 100, the contact area between the tooth bar 200 and the silicon steel block 120 is increased, thereby improving the contact area between the tooth bar 200 and the silicon steel block. 120 to further avoid deformation of the silicon steel block 120 during cutting. Wherein the width of the fixing hole 110 refers to the dimension of the fixing hole 110 in the axial direction of the silicon steel disc 100, and the silicon steel disc 100 is defined between the upper end 1003 and the lower end 1004. thickness.

The above-described embodiments are only used to illustrate the technical ideas and characteristics of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and the scope of the present invention cannot be limited only by this embodiment. The scope of patent adoption, that is, all equivalent changes or modifications made according to the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

A method for forming an axial switched reluctance motor rotor silicon steel block, characterized in that it comprises:

(a) Provide a silicon steel sheet disk (100), wherein said silicon steel sheet disk (100) has an inner end (1001) and an outer end (1002), and through said inner end (1001) and said outer end A plurality of fixing holes (110) at the end (1002), the plurality of fixing holes (110) are arranged at equal intervals along the circumference of the silicon steel disc (100), and two adjacent fixing holes A silicon steel block (120) is formed between the holes (110);

(b) providing a plurality of toothed rods (200), and sequentially inserting the plurality of toothed rods (200) into the fixing holes (110);

(c) providing a solid component (300), fixing the solid component (300) on the inner end (1001) and the outer end (1002);

(d) Cutting along a cutting position defined between the silicon steel block (120) and the fixing hole (110) to obtain a plurality of silicon steel blocks (120) for assembling the rotor.
The method for forming the rotor silicon steel block of an axial switched reluctance motor according to claim 1, wherein said step (a) further comprises:

(a1) Stamping the silicon steel sheet (1000) by a stamping equipment;

(a2) Rolling the stamped silicon steel sheet (1000) at the same angular velocity by a rolling device to form the silicon steel sheet disc (100).
The method for forming an axial switched reluctance motor rotor silicon steel block according to claim 2, wherein the stamped silicon steel sheet (1000) has a plurality of holes (1100) arranged at intervals, and the adjacent The substrate (1200) between the two holes (110), and then in the step (a2), a plurality of the substrates (1200) are rolled one by one to form a plurality of annularly arranged silicon steel blocks (120), a plurality of the hole portions (1100) are rolled one by one to form a plurality of the fixing holes (110) arranged in a ring and spaced apart from the silicon steel block (120).
The method for forming a silicon steel block for an axial switched reluctance motor rotor according to claim 3, characterized in that, the left and right sides of the substrate (1200) are respectively indented inward to form a stopper (1210), and then each In the structure of the silicon steel block (120), a plurality of limiting parts (1210) on both sides of the substrate (1200) respectively form limiting grooves (121) on both sides of the silicon steel block (120). .
The method for forming a silicon steel block for an axial switched reluctance motor rotor according to claim 2, wherein the silicon steel disc (100) also has an upper end (1003) and a lower end (1004), and the upper end (1003) and/or the lower end portion (1004) is provided with a guide groove (130) opposite to the cutting position, and then in the step (d), cutting along the guide groove (130) .
The forming method of silicon steel block for rotor of axial switched reluctance motor according to claim 5, characterized in that, the upper side and/or lower side of the silicon steel sheet (1000) are recessed to form a plurality of guide parts (1300), so The guide part (1300) is opposite to the cutting position, and in the step (a2), a plurality of the guide parts (1300) are rolled one by one to form the upper end part (1003) and/or the Guide groove (130) at the lower end (1004).
The method for forming an axial switched reluctance motor rotor silicon steel block according to claim 1, characterized in that the fixing hole (110) is located in the middle of the upper end (1003) and the lower end (1004) , and the ratio of the width of the fixing hole (110) to the thickness of the silicon steel disc (100) is greater than or equal to 1/2.
The method for forming an axial switched reluctance motor rotor silicon steel block according to claim 2, characterized in that, in each of the silicon steel block (120) structures, a plurality of the substrates (1200) along the The silicon steel discs (100) are stacked radially and gradually in width to form the silicon steel block (120), and the substrate (1200) is in an arc-shaped structure, and the inner side of the silicon steel block (120) is in an arc shaped groove, and the outer side of the silicon steel block (120) is arc-shaped convex.
The method for forming the rotor silicon steel block of an axial switched reluctance motor according to claim 1, wherein the solid component (300) comprises an inner solid part (310) and an outer solid part (320) , and then the step (c) further comprises:

(c1) fixing the inner solid part (310) on the inner end part (1001);

(c2) Fixing the external fixing part (320) on the outer end part (1002).
The forming method of axial switched reluctance motor rotor silicon steel block as claimed in claim 9, characterized in that, said external solid part (320) comprises two clamps (321), and said step (c2) is further include:

Tighten the two clips (321) on the outer end (1002).