CN214053346U

CN214053346U - Processing frock of stator punching

Info

Publication number: CN214053346U
Application number: CN202022869681.9U
Authority: CN
Inventors: 夏辰宇; 袁峥; 田井呈; 黄厚佳
Original assignee: Zhejiang PanGood Power Technology Co Ltd
Current assignee: Zhejiang PanGood Power Technology Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-08-27
Anticipated expiration: 2030-12-02

Abstract

The utility model provides a stator is towards processing frock of piece, inlay cover, fixed plate, guide pillar, terrace die component and pressure flitch including die, the guide pillar is fixed in on the die, the die is inlayed the cover and is fixed in on the die, terrace die component is fixed in on the fixed plate, fixed plate sliding connection in on the guide pillar, drive terrace die component with the cooperation of cover is inlayed to the die to make the material area form towards the piece, press flitch sliding connection in on the guide pillar, and be located the fixed plate with the cover is inlayed to the die, it is right to press the material area to press the material. When the fixing plate moves downwards, the pressing plate is driven to move downwards at the same time, so that the material belt is fixed between the pressing plate and the female die, and the forming precision of the punching sheet and the overlapped riveting points on the punching sheet is improved.

Description

Processing frock of stator punching

Technical Field

The utility model relates to the field of machining, especially, relate to a processing frock of stator punching.

Background

The motor stator is a key part of the motor, is generally formed by laminating silicon steel punching sheets with magnetic conductivity, and has high quality, particularly the flatness and the verticality of the surface, which directly influence the performance of the motor. In the prior art, through set up on the silicon steel punching sheet and fold the riveting point, and utilize and fold the riveting point and rivet the multi-disc silicon steel punching sheet together, the shaping that can see to fold the riveting point will influence follow-up stator, for example, the position of folding the riveting point on every silicon steel punching sheet is non-uniform, make and fold the stator structure that the semi-manufactured structure of shaping stator is different with the design needs, and then influence follow-up stator machine-shaping, in addition, current processing frock work efficiency is low, in view of this, need provide a processing frock of stator punching sheet that promotes machining precision and efficiency urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an effectively promote machining efficiency, and the processing frock of the high stator punching of degree of automation.

The utility model provides a processing frock of stator punching, includes that die, die inlay cover, fixed plate, guide pillar, terrace die subassembly and pressure flitch, the die cup connect in on the guide pillar, the die inlay the cover and be fixed in on the die, terrace die subassembly is fixed in on the fixed plate, fixed plate sliding connection in on the guide pillar, drive terrace die subassembly with the cooperation of die inlay the cover is inlayed to the die to make the material area form towards the piece, pressure flitch sliding connection in on the guide pillar, and be located the fixed plate with the die inlays the cover, in order to right the material area is pressed the material.

Optionally, the female die is provided with at least two material blocking pins, and the material blocking pins are respectively clamped on two sides of the material belt.

Optionally, the stop pin is L-shaped.

Optionally, a second fastening piece is mounted on the pressure plate, the second fastening piece is slidably connected with the fixing plate, a spring is sleeved on the second fastening piece, and the spring is located between the fixing plate and the pressure plate.

Optionally, the male die assembly comprises a stacking riveting male die, the female die insert sleeve is provided with a stacking riveting forming groove, and the stacking riveting male die is matched with the stacking riveting forming groove so as to enable the material belt to form a stacking riveting point.

Optionally, the male die assembly further comprises a blanking male die, and the female die insert sleeve is provided with a blanking hole matched with the blanking male die.

Optionally, a convex die concave part or a convex die convex part is arranged on the side wall of the blanking convex die.

Optionally, the male die assembly further comprises a platform dividing male die, a platform dividing hole matched with the platform dividing male die is formed in the female die insert sleeve, and the platform dividing hole is located between the rivet-stacking forming groove and the blanking hole.

Optionally, the riveting device further comprises a waste cutter, wherein the waste cutter is fixed on the fixing plate and is positioned on one side of the blanking male die, which is far away from the riveting male die.

Optionally, a sliding plate is arranged on the female die, and the sliding plate is opposite to the waste material knife.

Compared with the prior art, the technical scheme has the following advantages:

the material belt feeding method comprises the steps of forming a positioning hole on a material belt through the matching of a positioning hole male die and a positioning hole blanking groove, then enabling a positioning hole guide pin to penetrate through the positioning hole and be matched with a step pitch positioning hole, enabling a stacked riveting male die to be matched with a stacked riveting forming groove to form a stacked riveting point, and enabling a feeding step pitch of the material belt to be increased in the process that a branch punch is matched with a branch hole to form a branch hole part, and further guaranteeing the position accuracy of the stacked riveting point and the branch hole part. In addition, the material belt is continuously conveyed, so that the male die assembly punches the material belt to continuously form a plurality of punching sheets with overlapped riveting points, and the working efficiency and the yield are effectively improved. And the material pressing plate can move along the axis direction of the guide post, so that the movement of the material belt cannot be influenced, and when the fixed plate moves downwards, the material pressing plate is driven to move downwards simultaneously, so that the material belt is fixed between the material pressing plate and the female die, and the forming precision of the punching sheet and the upper overlapped riveting point of the punching sheet is improved.

The present invention will be further described with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of a processing tool for a stator punching sheet of the present invention;

fig. 2 is a cross-sectional view of the processing tool for the stator punching sheet of the present invention along one direction;

fig. 3 is a cross-sectional view of the processing tool for the stator punching sheet of the present invention along another direction;

fig. 4 is a cross-sectional view of the processing tool for the stator punching sheet of the present invention along another direction;

fig. 5 is a schematic structural view of the die insert of the present invention;

fig. 6 is a schematic structural diagram of the bottom plate of the present invention;

fig. 7 is a schematic structural view of the female die of the present invention;

fig. 8 is a schematic structural view of the fixing plate of the present invention;

fig. 9 is a schematic structural view of the material pressing plate of the present invention;

fig. 10 is a schematic structural view of the die shank of the present invention;

fig. 11 is a schematic structural view of the male mold for stack riveting of the present invention;

fig. 12 is a schematic structural view of the terrace die of the present invention;

fig. 13 is a schematic structural view of the blanking male die of the present invention;

fig. 14 to 18 are flow charts of methods of the tooling for processing the stator punching sheet according to the present invention;

fig. 19 is a schematic structural view of the stamped sheet of the present invention;

fig. 20 is a schematic structural view of a stator assembly of the motor of the present invention;

FIG. 21 is a schematic structural view of the substrate semi-finished product of the present invention;

fig. 22 is a schematic structural view of a semi-finished gear body of the present invention;

fig. 23 is a schematic structural view of the assembly of the base plate and the tooth member body according to the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

As shown in fig. 1 to 5, the processing tool for stator punching is used for processing a material strip 1700 to form a punching with a rivet joint 1720, and includes:

the die insert 400 is provided with a positioning hole charging groove 410, a stacking and riveting forming groove 430 and a step positioning hole 420;

the punch assembly comprises a positioning hole punch 800, a riveting punch 1000 and a positioning hole guide pin 900, wherein the positioning hole punch 800 is matched with the positioning hole blanking groove 410 so that a positioning hole 1710 is formed in a moving material belt 1700, and the positioning hole guide pin 900 penetrates through the positioning hole 1710 and is matched with the step positioning hole 420 so that the position accuracy of the riveting punch 1000 is improved when the riveting forming groove 430 is matched with the riveting forming groove to form a riveting point 1720.

The positioning hole male die 800 is opposite to the positioning hole blanking slot 410, the riveting male die 1000 is opposite to the riveting forming slot 430, and the positioning hole guide pin 900 is opposite to the step positioning hole 420, and moves towards the die insert 400 through the male die assembly, so that the material belt forms a positioning hole 1710 and a riveting point 1720. And the positioning hole 1710 formed on the material belt is matched with the positioning hole guide pin 900, so that the position precision of the riveting point 1720 is improved.

Specifically, the material strip 1700 passes through the die nest 400, sequentially passes through the positioning hole blanking groove 410 and the stacking rivet forming groove 430, and is matched with the positioning hole blanking groove 410 through the positioning hole male die 800 to form the positioning hole 1710 on the material strip 1700, waste materials formed by punching can directly fall into the positioning hole blanking groove 410, and then are matched with the stacking rivet forming groove 430 through the stacking rivet male die 1000 to form the stacking rivet point 1720 on the material strip 1700, and in the process of forming the stacking rivet point, the positioning hole guide pin 900 is matched with the step positioning hole 420 to improve the feeding step of the material strip, so that the position accuracy of the stacking rivet point is ensured.

As shown in fig. 5, the positioning hole feeding groove 410 and the rivet overlapping forming groove 430 are arranged along the moving direction of the material tape, so that the material tape first passes through the positioning hole feeding groove 410 and then passes through the rivet overlapping forming groove 430, the step positioning hole 420 and the positioning hole feeding groove 410 are positioned on the same straight line, and the step positioning hole 420 is positioned on the side of the positioning hole feeding groove 410 facing the rivet overlapping forming groove 430. Preferably, the center of the positioning hole feeding trough 410 is connected with the center of the step positioning hole 420, and the center of the positioning hole feeding trough is perpendicular to the center of the overlap rivet forming trough 430 and the step positioning hole 420. The center line of the positioning hole feeding trough 410 and the step positioning hole 420 is parallel to the moving direction of the material belt.

With reference to fig. 5, the number of the positioning hole blanking slots 410 is two, the positioning hole male dies 800 are respectively disposed on two sides of the rivet-stacking forming slot 430, the number of the positioning hole male dies 800 is the same as that of the positioning hole blanking slots 410, and the number of the positioning hole male dies 800 is also two, and each positioning hole male die 800 corresponds to one positioning hole blanking slot 410, so that the positioning holes are respectively formed on two sides of the material tape. Similarly, the number of the step positioning holes 420 may be two, and the two step positioning holes are respectively located on two sides of the die insert 400, each step positioning hole 420 is opposite to one positioning hole charging slot 410, and at this time, the number of the positioning hole guide pins 900 is also two, so as to correspond to the positioning holes formed on two sides of the material strip, and the feeding step of the material strip is further increased by positioning on two sides of the material strip. Of course, the number of the step positioning holes 420 and the positioning hole guide pins 900 may be more than two.

As shown in fig. 3 to 5, the punch assembly further includes a blanking punch 1200, the die insert 400 is provided with a blanking hole 450 matched with the blanking punch 1200, and the blanking hole 450 is located on one side of the rivet-stacking forming groove 440 away from the positioning hole blanking groove 430, and is used for punching the material strip to form a punched piece and dropping into the blanking hole 450.

Referring to fig. 5, the blanking hole 450 is located between two of the positioning hole blanking slots 410 and on the side of the step positioning hole 420 facing away from the positioning hole blanking slots 410.

The shape of the blanking hole 450 and the blanking punch 1200 determine the shape of the punch, which in one embodiment is rectangular. Therefore, punching sheets with different sizes can be obtained by replacing the blanking hole 450 and the blanking convex die 1200.

Since the material belt is continuously conveyed, a plurality of punching sheets with overlapped riveting points can be continuously formed in a stamping mode, and therefore the positioning hole male die 800, the overlapped riveting male die 1000, the positioning hole guide pin 900 and the blanking male die 1200 can fall down simultaneously, so that the material belt can form a positioning hole, an overlapped riveting point and a punching sheet at the same time, the positioning hole is used for positioning and forming of the next overlapped riveting point, and the overlapped riveting point is the overlapped riveting point on the next punching sheet.

It is worth noting that the punching sheet can be molded by matching the positioning hole guide pin 900 with the step pitch positioning hole 420, so as to ensure the position accuracy of the overlapped riveting point.

As shown in fig. 3 to 5, the punch assembly further includes a stage-dividing punch 1100, the die insert 400 is provided with a stage-dividing hole 440 matched with the stage-dividing punch 1100, and the stage-dividing hole 440 is located between the rivet-stacking forming groove 430 and the blanking hole 450, and is used for punching the material strip to form a corresponding stage-dividing hole portion. The punching sheets are continuously formed, and the stators are laminated and riveted according to the number of sheets required by design, so that after the punching sheet of one stator semi-finished product is finished, a separating hole needs to be punched to separate another stator semi-finished product, the separating hole corresponds to a laminating and riveting point, and the formed laminating and riveting point is punched through the matching of the separating convex die 1100 and the separating hole 440. Further, the positioning hole male die 1100, the riveting male die 1000, the positioning hole guide pin 900 and the blanking male die 1200 are continuously and intermittently dropped at the same time, and the separate male die 1100 is independently dropped relative to the other male dies.

Referring to fig. 5, the branch holes 440 are long holes and can cover the formed rivet overlapping points to punch and remove the rivet overlapping points, so as to obtain branch hole portions, and the removed waste materials can fall into the branch holes 440.

The operation of the stepped male die 1100 can simultaneously utilize the cooperation of the positioning hole guide pin 900 and the step positioning hole 420, thereby ensuring the position accuracy of the stepped hole portion forming. Specifically, the number of the step positioning holes 420 is four, two of the step positioning holes 420 are located on two sides of the overlapped rivet forming groove 430, the other two step positioning holes 420 are located on two sides of the separating hole 440, at this time, the number of the positioning hole guide pins 900 is also four, and each positioning hole guide pin 900 corresponds to one step positioning hole 420.

It should be noted that, in the same side of the rivet-stacking forming groove 430, the distance between the positioning hole feeding groove 410 and the adjacent step positioning hole 420 is equal to the distance between two adjacent step positioning holes 420.

As shown in fig. 1 to 4, 6 and 7, the stator punching sheet processing tool further includes a die 300 and a base plate 100, the die 300 is fixed on the base plate 100, and the die insert 400 is mounted on the die 300.

Specifically, the female die 300 is fixed to the base plate 100 by a first fastener a 01. Referring to fig. 6 and 7, a bottom plate threaded hole 120 is formed in the bottom plate 100, a female die threaded counter bore 340 is formed in the female die 300, and the first fastener a01 penetrates through the female die threaded counter bore 340 and is in threaded connection with the bottom plate threaded hole 120, so that the female die 300 is fixed to the bottom plate 100. The first fastening piece a01 may be a bolt, and the number of the first fastening pieces a01 may be multiple, so as to improve the connection strength of the two.

The die insert 400 is clamped on the die 300. Referring to fig. 7, the die 300 is provided with a die mounting hole 320, so that the die insert 400 is clamped in the die mounting hole 320.

With continued reference to fig. 3 and 6, the bottom plate 100 is provided with a bottom plate waste chute 130, and when the female die 300 is mounted on the bottom plate 100, the female die mounting hole 320 is opposite to the bottom plate waste chute 130, so that waste falling into the positioning hole waste chute 410 and the like can fall into the bottom plate waste chute 130.

With continued reference to fig. 3 and 4, the bottom plate 100 is provided with a bottom plate blanking groove 140, and when the female die 300 is mounted on the bottom plate 100, the blanking hole 450 of the female die insert 400 mounted on the female die 300 is opposite to the bottom plate blanking groove 140, so that the punching sheet enters the bottom plate blanking groove 140 through the blanking hole 450 to be stacked.

As shown in fig. 1, 2 and 7, the female die 300 is provided with material blocking pins 500 respectively clamped on two sides of the material strip to limit the material strip, so that the moving direction of the material strip keeps a straight line. Referring to fig. 7, a material stopping pin mounting hole 330 is formed in the die 300, and the material stopping pin 500 is inserted into the material stopping pin mounting hole 300, so that the material stopping pin 500 is fixed to the die 300.

In one embodiment, the number of the material blocking pin mounting holes 330 is four, two of the material blocking pin mounting holes 330 are located on one side of the female die mounting hole 320, the other two material blocking pin mounting holes 330 are located on the other side of the female die mounting hole 320, and the two material blocking pin mounting holes 330 on each side of the female die mounting hole 3320 respectively correspond to two sides of the material belt, so that the two material blocking pins 500 thereon are respectively clamped on two sides of the material belt, and further the moving direction of the material belt is limited, thereby improving the yield of the punching sheet.

Referring to fig. 5, the striker pin 500 is L-shaped.

As shown in fig. 1 and 2, the stator punching processing tool further includes a fixing plate 700 and a guide post 200, the guide post 200 is fixed on the base plate 100, the locating hole male die 800, the riveting male die 1000, the locating hole guide pin 900 and the blanking male die 1200 are fixed on the fixing plate 700, and the fixing plate 700 is slidably connected to the guide post 200, so that the male die assembly on the fixing plate 700 moves up and down along the axial direction of the guide post 200.

Referring to fig. 2 and 6, a guide post mounting hole 110 is formed in the bottom plate 100, and the guide post 200 is mounted in the guide post mounting hole 110, so that the guide post 200 is fixed to the bottom plate 100. The number of the guide posts 200 may be plural to improve the moving stability of the fixing plate 700.

Referring to fig. 2 and 7, the guide post 200 is slidably coupled to the fixing plate 700 through the female die 300. The die 300 is provided with a die through hole 310 through which the guide post 200 passes.

As shown in fig. 8, the fixing plate 700 is provided with a positioning hole punch mounting hole 720, a rivet stack punch mounting hole 740, a positioning hole guide pin mounting hole 730, a blanking punch mounting hole 760, and a stepped punch first through hole 750, and the positions of the mounting holes determine the positions of the punches, for example, the positioning hole punch 800 is inserted into the positioning hole punch mounting hole 720 and faces the positioning hole blanking slot 410 of the die insert 400. The positions of the positioning hole male die mounting hole 720, the stacked riveting male die mounting hole 740, the positioning hole guide pin mounting hole 730, the blanking male die mounting hole 760 and the stage-dividing male die first through hole 750 can refer to the holes on the die insert 400, and refer to fig. 5.

With continued reference to fig. 8, the fixing plate 700 may further have a first guide post through hole 710 through which the guide post 200 passes, so that the guide post 200 passes through the first guide post through hole 710, and the fixing plate 700 moves along the axial direction of the guide post 200, as shown in fig. 1.

The guide posts 200 are perpendicular to the female die 300 and the fixing plate 700, respectively.

As shown in fig. 1 to 4 and fig. 4, the processing tool for stator punching further includes a material pressing plate 1400, the material pressing plate 1400 is sleeved on the guide post 200 and located between the fixing plate 700 and the female die 300, and the material strap is located between the material pressing plate 1400 and the female die 300. The material pressing plate 1400 can move along the axial direction of the guide post 200, so that the movement of the material belt is not affected, and when the fixing plate 700 moves downwards, the material pressing plate 1400 is driven to move downwards, so that the material belt is fixed between the material pressing plate 1400 and the female die 300, and the forming precision of the punching sheet and the upper overlapped riveting point thereof is improved.

As shown in fig. 9, the material pressing plate 1400 is provided with a positioning hole male die through hole 1420, a rivet stacking male die through hole 1440, a positioning hole guide pin through hole 1430, a blanking male die through hole 1460, a stage separating male die second through hole 1450, and a guide pillar second through hole 1410. The position of the upper hole of the die insert 400 is opposite to that of the upper hole of the die insert 400, so that the pressure plate 1400 is free from the positioning hole male die 800, the riveting male die 1000, the positioning hole guide pin 900, the blanking male die 1200 and the separating male die 1100.

As shown in fig. 1 and 2, the pressing plate 1400 moves against the elastic force of the spring 1500, specifically, the second fastening member B02 is installed on the pressing plate 1400, the second fastening member B02 is slidably connected to the fixing plate 700, the second fastening member B02 is sleeved with the spring 1500, and the spring 1500 is located between the fixing plate 700 and the pressing plate 1400, so that the pressing plate 1400 moves against the elastic force of the spring 1500, and thus when the fixing plate 700 moves upwards, the pressing plate 1400 can be driven to move upwards, so that the tape can be transported and moved, and when the fixing plate 700 moves downwards, the pressing plate 1400 presses against the tape against the elastic force of the spring 1500, so as to prevent the tape from being damaged.

Specifically, referring to fig. 9, a limit threaded hole 1480 is formed in the material pressing plate 1400, and the second fastening member B02 is screwed on the limit threaded hole 1480. The pressure plate 1400 is further provided with a stop pin avoiding groove 1470 for avoiding the stop pin 500, when the pressure plate 1400 presses the female die 300, the convex stop pin 500 is inserted into the stop pin avoiding groove 1470, so that the pressure plate 1400 cannot press the material belt.

Referring to fig. 8, a fixing plate bolt counter bore 780 is formed in the fixing plate 700, and the second fastening member B02 may be a bolt, which passes through the fixing plate bolt counter bore 780 to be screwed with a limit threaded hole 1480 of the pressure plate 1400, so as to realize the sliding connection between the second fastening member B02 and the fixing plate 700.

As shown in fig. 1 to 4, the processing tool for the stator punching sheet further includes a waste material knife 1300, the waste material knife 1300 is fixed to the side surface of the fixing plate 700, and the waste material knife 1300 is located at a side of the blanking male die 1200 departing from the riveting male die 1000, so as to perform waste material cutting on the punched material tape.

The fixing plate 700 drives the rivet-stacking male die 1000 and the like to move downwards and punch the material belt, and simultaneously drives the waste material cutter 1300 to cut off waste materials of the material belt.

Specifically, referring to fig. 8, a waste blade mounting hole 770 is formed in a side surface of the fixing plate 700, and the waste blade mounting hole 700 is located on a side of the blanking punch mounting hole 760 facing away from the riveting punch mounting hole 740, so that the waste blade 1300 fixed to the waste blade mounting hole 770 is located on a side of the blanking punch 1200 facing away from the riveting punch 1000.

In one embodiment, the waste knife 1300 is inserted into the waste knife mounting hole 770.

In another embodiment, the scrap knife 1300 may be bolted into the scrap knife mounting hole 770.

As shown in fig. 1 to 4, a slide plate 600 is disposed on the base plate 100, and the slide plate 600 is opposite to the scrap cutter 1300 and is adjacent to the female die 300, so that the cut scrap slides out along the slide plate 600. Of course, the slide plate 600 may be fixed to the female die 300.

Referring to fig. 6, the base plate 100 is provided with a slide plate screw hole 150 for connecting a slide plate 600, and the connection between the two can be realized by a fastener.

As shown in fig. 1 to 4 and 10, the processing tool for the stator punching sheet further includes a die handle 1600, the die handle 1600 is fixed on one side of the fixing plate 700 away from the material pressing plate 1400, the die handle 1600 is connected to a card installing device on a punch press, and the punch assembly is driven by the punch press to move up and down so as to punch the material strap.

Referring to fig. 10, a punch chuck 1610 is provided on the die shank 1600 for chucking a machine tool. The die shank 1600 is provided with the die shank counterbore 1630, referring to fig. 8, the fixing plate 700 is provided with a third fastener mounting threaded hole 790, and the third fastener B03 passes through the die shank counterbore 1630 and is screwed with the third fastener mounting threaded hole 790, so as to fix the die shank 1600 and the fixing plate 700.

With continued reference to fig. 10, a shank relief hole 1640 is formed in the shank 1600 to relieve the second fastener B02, and with reference to fig. 2, the shank relief hole 1640 is opposite to the fixing plate bolt counterbore 780, so as to facilitate installation of the second fastener B02.

With continued reference to fig. 10, a third guide post through hole 1620 is further formed in the die handle 1600, so that the guide post 200 passes through the third guide post through hole 1620, so as to realize the sliding connection between the die handle 1600 and the guide post 200.

With continued reference to fig. 10, a third separating punch through hole 1650 is further formed on the die shank 1600, so that the separating punch 1100 penetrates through the third separating punch through hole 1650, referring to fig. 4. So that the stage-dividing male die 1100 can independently move relative to the positioning hole male die 800 and the like.

In summary, the positioning hole punch 800 is first matched with the positioning hole blanking slot 410 to form a positioning hole on the material tape, and then the positioning hole guide pin 900 is used to penetrate through the positioning hole and is matched with the step pitch positioning hole 420 to improve the feeding step pitch of the material tape in the process that the clinch punch 1000 is matched with the clinch forming slot 430 to form a clinch point and the staging punch 1100 is matched with the staging hole 440 to form a staging hole, so as to ensure the position accuracy of the clinch point and the staging hole. In addition, the material belt is continuously conveyed, so that the male die assembly punches the material belt to continuously form a plurality of punching sheets with overlapped riveting points, the automation degree is high, and the working efficiency and the yield are effectively improved.

The processing tool for the stator punching sheet is used for punching to form the punching sheet with the overlapped riveting points, then a stator semi-finished product is formed by overlapping, and finally a stator is formed by cutting. Referring to fig. 20 to 23, the stator assembly 1 of the electric motor includes a plurality of base plates 11 and a plurality of tooth members 12, wherein the plurality of base plates 11 are spliced to form an annular structure, and each of the base plates 11 is spliced to one of the tooth members 12. Specifically, the plurality of gear bodies 12 are sequentially clamped on the splicing base 13, so that the plurality of gear bodies 12 are annularly arranged, and then one substrate 11 is sequentially spliced on each gear body 12, so that the plurality of substrates 11 are sequentially spliced to form a closed annular structure.

Referring to fig. 23, the base plate 11 is provided with a base plate concave portion 111, and the gear body 12 is provided with the gear body convex portion 121 engaged with the base plate concave portion 111. The base plate 11 and the gear body 12 are joined by the cooperation of the base plate concave part 111 and the gear body convex part 121.

The utility model discloses a processing frock of stator punching sheet can correspond processing and form the punching sheet of base plate semi-manufactured goods and tooth spare body semi-manufactured goods, refer to fig. 21 and fig. 22. Specifically, the shapes of the riveting male die 1000, the blanking male die 1200 and the like are changed. The following are presented by way of two examples:

first embodiment

The processing tooling of the stator punching sheet of the embodiment corresponds to the punching sheet processing of a substrate semi-finished product, referring to fig. 21, two substrate concave parts 111 are arranged on the side surface of the substrate semi-finished product, and two substrate overlapping riveting points 112 are arranged at the end part of the substrate semi-finished product. Wherein two substrate staking points 112 may be laterally disposed.

As shown in fig. 1 to 4 and 11 to 13, the stator punching sheet processing tool includes a die insert 400 and a punch assembly, the die insert 400 is provided with a positioning hole blanking groove 410, a rivet-stacking forming groove 430, a step positioning hole 420, a blanking hole 450, and a separating hole 440, and the punch assembly includes a positioning hole punch 800, a rivet-stacking punch 1000, a positioning hole guide pin 900, a blanking punch 1200, and a separating punch 1100.

Referring to fig. 5, the number of the overlapped riveting forming grooves 430 is two, and referring to fig. 11, two overlapped riveting bosses 1010 are arranged on the overlapped riveting male die 1000, and each overlapped riveting boss 1010 corresponds to one overlapped riveting forming groove 430, so as to form two substrate overlapped riveting points 112 at the end of the substrate semi-finished product, referring to fig. 21.

With reference to fig. 5, the number of the stage holes 440 is two, and with reference to fig. 12, two stage bosses 1120 are provided on the stage punch 1100, and each stage boss 1120 corresponds to one stage hole 440 so as to correspond to two stage hole portions.

The shape of the blanking convex die 1200 determines the shape of the substrate semi-finished product, and as shown in fig. 14, a convex die concave part is formed on the side wall of the blanking convex die 1200, corresponding to the substrate concave part, refer to fig. 21. The cross section of the substrate semi-finished product is rectangular, and the cross section of the blanking male die 1200 is also rectangular.

Second embodiment

The processing tooling of the stator punching sheet of the embodiment corresponds to the punching sheet processing of a semi-finished gear body, referring to fig. 22, two gear body convex parts 121 are arranged on the side surface of the semi-finished gear body, and a gear body overlapping riveting point 122 is arranged at the end part of the semi-finished gear body.

The number of the overlapped riveting molds 430 is one, referring to fig. 11, an overlapped riveting boss 1010 is arranged on the overlapped riveting male mold 1000, and the overlapped riveting boss 1010 is matched with the overlapped riveting mold groove 430 to form a substrate overlapped riveting point 112 at the end of the substrate semi-finished product, referring to fig. 22.

With reference to fig. 5, the number of the stage holes 440 is one, and with reference to fig. 12, a stage boss 1120 is disposed on the stage punch 1100, and the stage boss 1120 is matched with the stage hole 440 to correspond to a stage hole portion.

The shape of the blanking male die 1200 determines the shape of the gear body semi-finished product, and a male die convex part is formed on the side wall of the blanking male die 1200, corresponding to the gear body convex part 121, as shown in fig. 22. The cross section of the semi-finished gear body is square, and the cross section of the blanking male die 1200 is also square.

Referring to fig. 14 to 19, the tooth body semi-finished product and the substrate semi-finished product have the same sheet forming method, and the sheet forming method will be described below by taking the substrate semi-finished product sheet as an example, the bottom plate 100, the die 300, the die insert 400, and the like are classified as components a, the die shank 1600, the fixing plate 700, the pressure plate 1400, and the like are classified as components B, wherein the component a is fixed, and the component B can move up and down along with the pressing machine, and the method includes the following steps:

the strip 1700 is restricted from passing over the die insert 400 by the dam pin 500 and is stepped by a certain distance.

The punching machine drives the component B to move downwards, so that the material pressing plate 1400 presses against the material belt 1700 against the elastic force of the spring 1500 to prevent the material belt 1700 from slipping off, and meanwhile, a positioning hole 1710, a riveting point 1720, a punching sheet hole 1730 and waste materials 1740 are formed in the material belt 1700. Specifically, through locating hole terrace die 800 with locating hole blanking groove 410 cooperates, so that form material area locating hole 1710 on the material area 1700, afterwards the B subassembly rebound, wherein fixed plate 700 drives press flitch 1400 to shift up, in order to relieve press flitch 1400 is right the effect of compressing tightly of material area 1700, so that the material area 1700 can step by step once more, until locating hole 1710 on the material area 1700 with step-by-step locating hole 130a is relative, at this moment subassembly B moves down again, so that form the follow-up locating hole 1710 that is used for the location on the material area 1700, and locating hole uide pin 900 passes through locating hole 1710 inserts in step pitch locating hole 420, utilize simultaneously fold rivet terrace die 1000 with fold rivet shaping groove 430 cooperation, so that form material area fold rivet point 1720 on the material area 1700, through locating hole uide pin 900, The step positioning holes 420 are matched with the positioning holes in the material belt, so that the forming precision of the riveting point 1720 is improved. After the tape 1700 continues to step until the clinch point 1720 is matched with the blanking hole 450, the component B moves downward again, so that the blanking male die 1200 passes through the tape 1700 to form a punched piece with the clinch point, and at this time, the tape 1700 leaves a punched piece hole 1730 and a waste 1740.

When the punched waste 1740 on the strip 1700 moves to be opposite to the waste knife 1300, the waste knife 1300 moves downwards to cut the waste, and the cut waste is removed along with the sliding plate 600.

The positioning hole male die 800, the positioning hole guide pin 900, the blanking male die 1200 and the waste material knife 1300 move downwards simultaneously, and the forming of the overlapped riveting point, the distribution holes and the like improves the feeding step precision under the matching of the positioning hole guide pin 900 and the step positioning hole 420, so that the forming position precision of the overlapped riveting point and the distribution hole part is ensured, and the yield of the punching sheet is effectively improved.

The operation of the stepped male die 1100 can simultaneously utilize the cooperation of the positioning hole guide pin 900 and the step positioning hole 420, thereby ensuring the position accuracy of the stepped hole portion forming.

The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to limit the scope of the present invention in terms of implementation, which is not limited by the present embodiment, i.e. all equivalent changes or modifications made in accordance with the spirit disclosed by the present invention still fall within the scope of the present invention.

Claims

1. The utility model provides a processing frock of stator punching, its characterized in that includes the die, the die inlays cover, fixed plate, guide pillar, terrace die assembly and presses the flitch, the die cup connect in on the guide pillar, the die inlays the cover and is fixed in on the die, terrace die assembly is fixed in on the fixed plate, the fixed plate sliding connection in on the guide pillar, drive terrace die assembly with the cooperation of cover is inlayed to the die to make the material area form towards the piece, press the flitch sliding connection in on the guide pillar, and be located the fixed plate with the die inlays the cover, in order to right the material area is pressed the material.

2. The processing tool for the stator punching sheet according to claim 1, wherein the female die is provided with at least two material blocking pins, and the material blocking pins are respectively clamped on two sides of the material belt.

3. The processing tool for the stator punching sheet according to claim 2, wherein the material blocking pin is L-shaped.

4. The processing tooling for the stator punching sheet according to claim 1, wherein a second fastener is mounted on the pressing plate and is slidably connected with the fixing plate, a spring is sleeved on the second fastener, and the spring is located between the fixing plate and the pressing plate.

5. The processing tool for the stator punching sheet according to claim 1, wherein the male die assembly comprises a riveting male die, the female die insert sleeve is provided with a riveting forming groove, and the riveting male die is matched with the riveting forming groove so as to enable the material belt to form a riveting point.

6. The processing tool for the stator punching sheet according to claim 5, wherein the male die assembly further comprises a blanking male die, and the female die insert sleeve is provided with a blanking hole matched with the blanking male die.

7. The processing tool for the stator punching sheet according to claim 6, wherein a male die concave part or a male die convex part is formed in the side wall of the blanking male die.

8. The processing tool for the stator punching sheet according to claim 6, wherein the male die assembly further comprises a platform dividing male die, a platform dividing hole matched with the platform dividing male die is formed in the female die insert sleeve, and the platform dividing hole is located between the stack riveting forming groove and the blanking hole.

9. The processing tool for the stator punching sheet according to claim 6, further comprising a waste cutter, wherein the waste cutter is fixed on the fixing plate and is located on one side of the blanking male die, which is far away from the riveting male die.

10. The processing tool for the stator punching sheet according to claim 9, wherein a sliding plate is arranged on the female die, and the sliding plate is opposite to the scrap cutter.