CN101700547A

CN101700547A - Slitting punching groove die of stator punching sheet

Info

Publication number: CN101700547A
Application number: CN200910057099A
Authority: CN
Inventors: 张帆; 詹顺余; 唐群花
Original assignee: Shanghai Electric Group Shanghai Electric Machinery Co Ltd
Current assignee: Shanghai Electric Group Shanghai Electric Machinery Co Ltd
Priority date: 2009-04-20
Filing date: 2009-04-20
Publication date: 2010-05-05
Anticipated expiration: 2029-04-20
Also published as: CN101700547B

Abstract

The invention relates to a slitting punching groove die of a stator punching sheet. A guide pillar is arranged at the rear part of a lower die seat; an upper die seat is matched with the guide pillar through a guide hole at the rear part and arranged above the lower die seat; a fixed plate is arranged on the lower surface of the upper die seat; a slitting terrace die and a groove-shaped terrace die the groove opening of which is a round angle are embedded ion the fixed plate at intervals; the fixed plate is connected with stripper plates which are sleeved on the groove-shaped terrace die and the slitting terrace die through a spring mandrel; and a concave module is fixed on the lower die seat and provided with a groove-shaped cavity die and a splitting cavity die which correspond to the groove-shaped terrace die and the splitting terrace die, wherein the slitting terrace die and the splitting cavity die are of a flat rectangle shape. The die can punch off a piece of slitting scrap material while punching the stator groove shape, and a tip angle connected to the splitting scrap material falls off together with the slitting scrap materials, thereby avoiding the generation of metal scrap during punching the stator groove shape and finally improving the quality of the stator and the efficiency of punching groove of the stator punching sheet.

Description

Slitting punching groove die of stator punching sheet

Technical field

The invention belongs to technical field of motors, specifically belong to motor stator, rotor manufacturing technology field, relate to the stator punching that goes out stator punching in the disk punching out and cut punching die.

Background technology

In the manufacturing of motor stator, rotor, be to make stator and rotor a disk upper punch.For fear of when the operation rule of back, stator rabbet damages the insulating barrier of coil, and when stator laminating structure designed, the notch angle that requires the stator rabbet place was a fillet.

Cut in the punching die structure at existing stator punching, the flute profile cutting edge has fillet at the notch place, and the structure of circle cutting edge is the linear cutting structure in inclined-plane in cutting.Like this, mould but can leave unnecessary little wedge angle dashing on the rotor blank cylindrical that falls after going out notch place fillet on the disk, and quantity is consistent with stator slot shape quantity.Because of the stator and rotor groove number gone out on same disk is not always identical, when rotor was cut cylindrical and jet-bedding, except that the block waste material normal descend of flute profile, regular meeting was cut off the metal fragment that forms the free state that do not stress during this little wedge angle.These metal fragments can be adsorbed on the mould in the die-cut process of back easily, cause on the different parts of punching channel region with chance a lot of impressions that are stamped out, even the situation that has the damage flute profile produces, therefore, the quality of rotor punching can be subjected to adverse effect in various degree.Take place for fear of above-mentioned situation, in rotor punching punching out process, operating personnel can only slow down the speed of a motor vehicle and helplessly shut down irritating metal fragment ubiquitous on wiping punching and the mould not even the time, have influenced the jet-bedding efficient of rotor punching so greatly.

For the technical problem of above-mentioned existence, the way of the associated companies of foreign-made like product is: also mark notch place fillet on similar design drawing, but be not take in when actual punching out stator punching, still punching out meets at right angles.Just illustrated that also but external associated companies avoided this important difficult difficult problem of gnawing.But the way of evading the question like this can cause when the operation rule of back, and coil covering is very easy to be damaged by the wedge angle notch, has influenced the final mass of whole motor.

In addition, also having a kind of way is after back operation iron core laminates, and again the notch reconditioning is gone out fillet, and such way is time-consuming need do a large amount of work such as cleaning again, and can make loss increase unshakable in one's determination adverse effect be arranged to motor properties.

Summary of the invention

Technical problem to be solved by this invention provides a kind of stator punching of avoiding metal fragment to produce and cuts punching die, overcomes the defective that prior art exists.

In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:

A kind of stator punching is cut punching die, rear portion at die shoe has lead, upper bolster cooperates the top that is installed in die shoe by the pilot hole at rear portion with lead, the lower surface of upper bolster has fixed head, be embedded with at interval on the fixed head and cut punch and the notch place is the flute profile punch of fillet, fixed head also is connected with by central spindle of the spring and is enclosed within flute profile punch and the stripper of cutting on the punch, on die shoe, be fixed with the die piece, have with the flute profile punch on the die piece and cut the corresponding flute profile die of punch and cut punch, it is characterized in that the described punch of cutting is flat rectangular shape with cutting die.

Adopt technique scheme, owing to cut punch and cut die and adopt flat rectangular shape, on mould, just form a plane bulk like this and dashed cutting edge, this plane bulk dashes cutting edge can dash the waste material of cutting fall a band wedge angle along circle in the stator punching, makes wedge angle separate and make finally to cause dashing on the rotor blank that falls and do not have wedge angle together with cutting waste material.There is not the existence of little wedge angle on the rotor blank; when the punching out rotor slot shape, just can not there be the problem that can produce the metal fragment that cuts off; that is to say when the punching out rotor slot shape; not having metal fragment is adsorbed on the mould; the situation that also just can not form impression and damage rotor slot shape on rotor punching takes place; equally do not need operating personnel to remove to slow down the metal fragment that wiping punching and mould are removed in the speed of a motor vehicle or shutdown yet, improved the jet-bedding efficient of rotor punching greatly.Therefore, stator punching of the present invention is cut punching die and can be dashed one simultaneously at the punching out stator slot shape and cut waste material, and be that wedge angle is connected to cut on the waste material and together falls, avoided when the punching out rotor slot shape, producing metal fragment, finally improved the quality of stator and the efficient of rotor punching jet-bedding.

Description of drawings

The present invention is described in detail below in conjunction with the drawings and specific embodiments:

Fig. 1 is a structure cutaway view of the present invention;

Fig. 2 is the side sectional view of Fig. 1;

Fig. 3 be among Fig. 1 A-A to view;

Fig. 4 be among Fig. 2 B-B to revolved view;

Fig. 5 is for adopting stator punching behind the mould punching of the present invention, cutting the structural relation schematic diagram of waste material and rotor punching.

The specific embodiment

As shown in Figures 1 to 4, stator punching of the present invention is cut punching die, comprises upper bolster 10, die shoe 20, fixed head 30, and stripper 40, flute profile punch 50 is cut punch 60, lower module 70.

Wherein, the rear portion of die shoe 20 has lead 21, and die shoe 10 rear portions have the pilot hole 11 that cooperates with lead 21, and upper bolster 10 is installed on the lead 21 of die shoe 20 by pilot hole 11.The lower surface of upper bolster 10 is equipped with fixed head 30, flute profile punch 50 and cut punch 60 and be embedded on the fixed head 30.Because therefore flute profile punch 50 and to cut the impulsive force that punch 60 is subjected in punching out stator punching process bigger is lined with the high hard packing plate 80 of hardness that withstands flute profile punch 50 and cut punch 60 between upper bolster 10 and fixed head 30.Stripper 40 is installed in the below of fixed head 30 by central spindle of the spring 41, and the slotted eye that is enclosed within flute profile punch 50 and cuts punch 60 is arranged on it, stripper 40 the effect here be after flute profile of punching out with the stator disk from flute profile punch 50 with cut punch 60 and unload, so that the mould punching flute profile can be carried out continuously.As shown in Figure 4, in the present invention, flute profile punch 50 can punching out go out the stator slot shape that notch angle is a fillet, cuts punch 60 and keeps at a certain distance away with flute profile punch 50, particular location is in conjunction with shown in Figure 5, and the structure from the corresponding stator punching is between following two stator slot shapes.

As shown in Figure 3, lower module 70 is installed on the die shoe 20, lower module 70 corresponding flute profile punch 50 have with flute profile punch 50 with the position of cutting punch 60 and cut the flute profile die 71 of punch 60 identical cross-sectional shapes and cut die 72.

In the present invention, cut punch 60 and cut die 72 cross sections and be flat rectangular shape, such shape makes that just forming a plane bulk on mould dashes cutting edge, this plane bulk dashes cutting edge can dash the waste material of cutting fall a band wedge angle along circle in the stator punching, makes wedge angle separate and make finally to cause dashing on the rotor blank that falls and do not have wedge angle together with cutting waste material.Owing to be subjected to the restriction of stator and rotor punching air gap size, and rotor when cutting the cylindrical jet-bedding the allowance that must leave, blade shape can only be flat rectangular shape (size: 1.8mm * 18mm).

Please refer to Fig. 5, stator punching of the present invention is cut punching die, along the circumferential direction washes out earlier stator slot shape waste material 201 successively simultaneously and cut waste material 202 on a disk 100.Just having formed notch angle 302 successively is the stator slot shape 301 of fillet to wash out flute profile waste material 201 backs, and the waste material 202 of cutting that washes out is cut along 301 along stator punching 300 internal circles between adjacent stator slot shape 302, at this moment the waste material 201 of cutting that washes out together falls from disk 100 upper punches together with wedge angle 303 (as the background technology introduction, notch angle is gone out fillet simultaneously must form wedge angle 303).Behind circumference of punching out, stator punching 300 and rotor blank 400 have just been formed so successively.And then utilize the rotor punch die to go out rotor slot shape 401 successively along circumferencial direction, just formed rotor punching after one week of punching out successively.

Adopt punching of the present invention to cut punching die, go out one by one on the disk 100 stator slot shape 302 simultaneously also along stator punching 300 internal circle lines wash out successively between the adjacent stators flute profile 302 have a wedge angle 303 cut waste material 202, make wedge angle 303 separate and make on the rotor blank 400 that finally dashes and do not have wedge angle together with cutting waste material 202.There is not the existence of little wedge angle on the rotor blank 400; when punching out rotor slot shape 401, just can not there be the problem that can produce the metal fragment that cuts off; that is to say when punching out rotor slot shape 401; not having metal fragment is adsorbed on the mould; the situation that also just can not form impression and damage rotor slot shape on rotor punching takes place; equally do not need operating personnel to remove to slow down the metal fragment that wiping punching and mould are removed in the speed of a motor vehicle or shutdown yet, improved the jet-bedding efficient of rotor punching greatly.Therefore, stator punching of the present invention is cut punching die and can be dashed one simultaneously at the punching out stator slot shape and cut waste material, and be that wedge angle is connected to cut on the waste material and together falls, avoided when the punching out rotor slot shape, producing metal fragment, finally improved the quality of stator and the efficient of rotor punching jet-bedding.

But, those skilled in the art will recognize that, the above-mentioned specific embodiment is exemplary, be in order better to make those skilled in the art can understand this patent, can not be interpreted as it is the restriction that this patent is comprised scope, so long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.

Claims

1. a stator punching is cut punching die, rear portion at die shoe has lead, upper bolster cooperates the top that is installed in die shoe by the pilot hole at rear portion with lead, the lower surface of upper bolster has fixed head, be embedded with at interval on the fixed head and cut punch and the notch place is the flute profile punch of fillet, fixed head also is connected with by central spindle of the spring and is enclosed within flute profile punch and the stripper of cutting on the punch, on die shoe, be fixed with the die piece, have with the flute profile punch on the die piece and cut the corresponding flute profile die of punch and cut punch, it is characterized in that the described punch of cutting is flat rectangular shape with cutting die.