CN202103496U

CN202103496U - Close-slot type cast aluminum rotor punched sheet

Info

Publication number: CN202103496U
Application number: CN 201120171860
Authority: CN
Inventors: 王岳; 姜煜峰
Original assignee: Jiangsu Tongda Power Technology Co Ltd
Current assignee: Nantong Tongda silicon steel stamping technology Co. Ltd.
Priority date: 2011-05-26
Filing date: 2011-05-26
Publication date: 2012-01-04
Anticipated expiration: 2021-05-26

Abstract

The utility model relates to the field of motor manufacture, in particular to the manufacture field of close-slot type motor rotors which are low in voltage, large in power, high in efficiency and capable of saving energy with roller ways and the like. A close-slot type rotor punched sheet comprises a rotor punched sheet body, wherein the edge of the punched sheet body is provided with a notch. The notch is a rectangle which is arranged right above a punched sheet body key groove and is 1-2mm in length and 1-2mm in width. An opening with a 1-2mm width is punched on the punched sheet by a punch press, when a rotor die-casts nest plates, one rotor punched sheet with an opening is arranged on the rotor at intervals, the interval ranges from several millimeters to several centimeters, therefore several to scores of vent grooves with a 1-2mm width and a one-punched-sheet thickness are formed along the length direction of the rotor namely, and normally the thickness is 0.35mm or 0.5mm. The design of the grooves reduces content of internal air to the greatest extent, thereby improving internal quality of rotor die-casting.

Description

A kind of grooved cast-aluminum rotor punching of remaining silent

Technical field

[0001] the utility model relates to field of motor manufacturing, especially the extrusion process of low-pressure high-power, roller-way, the grooved rotor of remaining silent such as energy-efficient.

Background technology

[0002] for a long time, centrifugal aluminum casting rotor apparent mass has problems always, and balance columns, fan blade, lower loop pore are serious, even misrun, so percent defective is quite high.Trace it to its cause, extrusion process is all adopted in the rotor production of existing domestic middle and small motor, and the die casting rotor is increasing; Diameter reaches more than the 600mm, and length surpasses 1000mm, and this technology is in the motor rotor die-casting process; Air in compression mod die cavity and the grooved can only exhaust on the upper and lower mould plane, and the die casting time have only in 0.5 second, a large amount of gases rows do not go out; Be prone in rotor aluminium ring, form a lot of pores, influence the casting aluminum rotor internal soundness, very big to the motor performance influence.

Summary of the invention

A kind of grooved rotor punching of remaining silent comprises the rotor punching body, and described punching body edges has notch.

Said notch is arranged on directly over the punching body keyway to, the rectangle of long 1 ~ 2mm, wide 1 ~ 2mm.

The punching grooved is washed into the opening of 1 ~ 2mm width, the punching notch is washed open.When the motor rotor die-casting nest plate every at a distance from one section (several millimeters to several centimeters) put one open mouth rotor punching; On the rotor length direction, be equivalent to form the air discharge duct of the wide punching thickness of several to dozens of 1 ~ 2mm like this; General 0.35mm or 0.5mm are thick, and rotor is in the moment of die casting, the air in die cavity and the grooved can be from mould several float air drains discharges lower plane and each grooved; Reduce the content of internal gas to greatest extent, thereby improve the internal soundness of motor rotor die-casting.

Description of drawings

Fig. 1 is a kind of grooved rotor punching of the utility model structural representation;

Fig. 2 is Fig. 1 partial enlarged drawing;

Fig. 3 is the structural representation after the punching of the utility model cast-aluminum rotor laminates;

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model utility model is described further.

Like Fig. 1, shown in Figure 2, a kind of grooved rotor punching of remaining silent.A kind of grooved rotor punching of remaining silent comprises rotor punching body 1, and described punching body 1 edge has single groove 2.Described single groove 2 length and width respectively are 1 ~ 2mm.

The utility model is to utilize the grooved rotor punching of remaining silent, and part punching grooved is washed into the opening of 1 ~ 2mm width, and the punching notch is washed open.Every at a distance from one section when the motor rotor die-casting nest plate; Put the rotor punching that opens mouthful for several millimeters to several centimeters; On the rotor length direction, be equivalent to form the air discharge duct (general 0.35 or 0.5mm thick) of the wide punching thickness of several to dozens of 1 ~ 2mm like this, rotor is in the moment of die casting, the air in die cavity and the grooved can be from mould lower plane and each grooved several float air drains discharge; Reduce the content of internal gas to greatest extent, thereby improve the internal soundness of motor rotor die-casting.

Claims

1. the grooved rotor punching of remaining silent comprises rotor punching body (1), it is characterized in that: described punching body (1) edge has notch (2).

2. a kind of grooved rotor punching of remaining silent according to claim 1 is characterized in that: said notch (2) is for being arranged on directly over punching body (1) keyway to, the rectangle of long 1 ~ 2mm, wide 1 ~ 2mm.