Punch die module of stator punching sheet
A technology of stator punching and punching die, which is applied in the manufacture of stator/rotor body, etc., which can solve the problems of labor-consuming and time-consuming cleaning, increased core loss, and adverse effects on motor performance.
Active Publication Date: 2010-05-05
上海电气集团上海电机厂有限公司
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Problems solved by technology
However, this way of avoiding the problem will cause the coil insulation layer to be easily damaged by the sharp-edged notch when inserting the wire in the subsequent process, which will affect the final quality of the entire motor
[0005] In addition, there is another way to grind the notch into rounded corners after the iron core is laminated in the post-process. The performance of the motor is adversely affected
Method used
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[0018] The stator punch die module of the present invention includes an upper module and a lower module 20.
[0019] Among them, such as Figure 2 to Figure 5 As shown, the upper module is divided into a slitting punch 11 and a groove punch 12. And as figure 1 As shown, the lower module 20 has a slitting die 21 and a groove-shaped die 22.
[0020] Please refer to figure 1 with figure 2 As shown, the two corners at the lower part of the cross-section of the slot-shaped punch 12 and the slot-shaped die 22 are rounded. Such a cross-sectional shape makes the punched stator slot 301 have rounded corners (such as Figure 7 Shown). Rejoin figure 1 with Figure 5 As shown, the shapes of the cutting punch 11 and the cutting concave mold 21 are flat rectangular shapes.
[0021] Another example figure 1 As shown, the slitting die 21 and the grooved die 22 (from the upper module, that is, the slitting die 11 and the grooved die 12) are separated by a certain distance, and the specific positio...
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The invention relates to a punch die module of a stator punching sheet, comprising an upper module and a lower module, wherein the upper mould comprises a slitting terrace die and a groove-shaped terrace die which are arranged at intervals, wherein the groove-shaped terrace die is used for punching a notch angle of the stator into a round angle; and the lower module is provided with a slitting cavity die and a groove-shaped cavity die which are arranged at intervals and correspond to the slitting terrace die and the groove-shaped terrace die, wherein the slitting terrace dies and the slitting cavity dies are of a flat rectangle shape. The modules are mounted on the die, then can punch off a piece of slitting scrap material while punching the stator groove shape on the die, and a tip angle connected to the splitting scrap material falls off together with the slitting scrap material, 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
Technical field [0001] The invention belongs to the technical field of motors, in particular to the technical field of motor stator and rotor manufacturing, and relates to a stator punch die module for punching stator punches on a wafer. Background technique [0002] In the manufacture of motor stators and rotors, the stator and rotor are punched out of a wafer. In order to avoid the stator notch from damaging the insulation layer of the coil during wire embedding in the later process, the corner of the notch at the stator notch is required to be rounded when the stator punch structure is designed. [0003] In the existing stator punching die module structure, the slot-shaped cutting edge has rounded corners at the slot, and the structure of the internal circular cutting edge is an inclined linear cutting structure. In this way, after the die punches the rounded corners at the notch on the wafer, there will be extra small sharp corners on the outer circle of the punched rotor blan...
Claims
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IPC IPC(8): H02K15/02
Inventor 张帆詹顺余唐群花
Owner 上海电气集团上海电机厂有限公司