CN2842858Y

CN2842858Y - Brushless generator claw pole

Info

Publication number: CN2842858Y
Application number: CN 200520076927
Authority: CN
Inventors: 刘强; 庄晓伟; 徐进; 孙跃
Original assignee: ZHUANG LONGXING
Current assignee: ZHUANG LONGXING
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2006-11-29
Anticipated expiration: 2015-10-28

Abstract

The utility model relates to a kind of pawl pole of brush-less generator, and pawl utmost point bottom is an annulus, is evenly distributed with six or eight beak shaped pawls on annulus, and the interior inclined-plane of pawl is provided with one and ends shoulder.Pawl pole of brush-less generator of the present utility model utilizes the only shoulder on the inclined-plane in the pawl, and brush-free claw-pole is welded together with annulus with the fore paw utmost point, can prevent to cause pawl to bump stator, thereby cause generator short circuit in the distortion of the high speed rotating median claw utmost point.

Description

Pawl pole of brush-less generator

Affiliated technical field

The utility model relates to a kind of pawl pole of brush-less generator.

Background technology

Brushless generator is installed in the next door of engine, by the engine driven rotary, thereby mechanical energy is converted into electric energy.Brushless generator is made up of stator winding and rotor winding two parts, and the threephase stator winding is distributed on the housing by differing 120 degree each other, and the rotor winding is made up of two pawl utmost points.By excitation, two pawl utmost points form the N utmost point and the S utmost point when the rotor winding is connected direct current.The magnetic line of force is set out by the N utmost point, enters stator core through the air gap and returns the adjacent S utmost point.Rotor is in case rotation, and the rotor winding will cutting magnetic line, produces the electromotive force of mutual deviation 120 degree in stator winding, and promptly three-phase alternating current becomes direct current output through rectifier cell again.Brushless generator is as the term suggests be exactly that generator need not used brush.Its principle be magnet exciting coil on the bobbin of internal stator, internal stator is connected with rear end cap, draw by internal stator at the two ends of magnet exciting coil, be connected on the two ends of voltage regulator, internal stator does not contact with the front and back pawl utmost point, and magnet exciting coil does not rotate during the rotation of the pawl utmost point, has so just saved brush.The advantage of brushless generator is: do not produce electromagnetic interference 1.; 2. need not change brush, non-maintaining, stable performance, reliable, the generator long service life.The brushless generator structure impels the shape of its pawl utmost point to be different from the brush generator claw pole, and existing pawl pole of brush-less generator very easily is out of shape at the high speed rotating median claw, causes pawl to bump stator, thereby causes generator short circuit.

Summary of the invention

In order to overcome the deficiency of existing pawl pole of brush-less generator, the utility model provides a kind of pawl pole of brush-less generator, can prevent to cause pawl to bump stator, thereby cause generator short circuit in the distortion of the high speed rotating median claw utmost point.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of pawl pole of brush-less generator, and pawl utmost point bottom is an annulus, is evenly distributed with six or eight beak shaped pawls on annulus, the interior inclined-plane of pawl is provided with one and ends shoulder.

The beneficial effects of the utility model are, pawl pole of brush-less generator of the present utility model has one to end shoulder in pawl on the inclined-plane, utilize this to end shoulder brush-free claw-pole is welded together with annulus with the fore paw utmost point, can prevent to be out of shape at the high speed rotating median claw utmost point, cause pawl to bump stator, thereby cause generator short circuit.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of pawl pole of brush-less generator of the present utility model.

Fig. 2 is a process chart of the present utility model.

Fig. 3 is the structural representation of raw pieces in the utility model.

Fig. 4 is the structural representation of jumping-up spare in the utility model.

Fig. 5 is the structural representation of pre-forging in the utility model.

Fig. 6 is the cutaway view of Fig. 5.

Fig. 7 is the structural representation of finish forge spare in the utility model.

Fig. 8 is the cutaway view of Fig. 7.

Fig. 9 is the structural representation of semi-finished articles in the utility model.

Figure 10 is the cutaway view of Fig. 9.

Among the figure: 1. annulus, 2. pawl 3. ends shoulder.

Embodiment

Pawl pole of brush-less generator of the present utility model as shown in Figure 1, pawl utmost point bottom is an annulus 1, is evenly distributed with eight beak shaped pawls 2 on annulus 1, the interior inclined-plane of pawl 2 is provided with one and only takes on 3.

The manufacturing process of pawl pole of brush-less generator of the present utility model as shown in Figure 2 has following processing step:

A. blanking; Select the good raw material 08# mild steel of electromagnetic performance for use,, raw material are sawn into as shown in Figure 3 raw pieces with sawing machine according to the weight requirement;

B. heating; Raw pieces dropped into be heated to 1050 ℃～1100 ℃ in the heating furnace; We are through repetition test, the raw pieces heating-up temperature is fixed between 1050 ℃～1100 ℃, can guarantee only needs heating once, its interior tissue was single austenite when raw pieces was carried out jumping-up, blocking, finish forge on streamline, raw pieces still has good plasticity during finish forge, makes each pawl of finish forge spare can both forge full, the dimensional accuracy height of pawl, the good dynamic balance of final finished part;

C. jumping-up; The raw pieces that heats with the crank press flat one-tenth jumping-up spare as shown in Figure 4 of upsetting, is removed surface scale;

D. blocking; Jumping-up spare is moved into preforming in the blocker of taking pore out of, adopt pawl to forge towards upper type, form as Fig. 5, pre-forging shown in Figure 6, owing to adopt pawl to forge towards upper type, and has venthole on the mould, therefore forging equipment can adopt the common forging equipment of less tonnage, as friction press;

E. finish forge; Pre-forging is put into the precision forging die moulding, form as Fig. 7, finish forge spare shown in Figure 8;

F. cut edge; Overlap excision with finish forge spare;

G. magnetic annealing; The finish forge spare of excision overlap is put into annealing furnace anneals;

H. cold shaping; Inclined-plane in yoke cylindrical, inner plane and the pawl of the whole pawl utmost point is for follow-up machine work provides benchmark;

I. roughing; With inclined-plane location in the pawl after the cold shaping, the big plane and the cylindrical of the processing pawl utmost point, and cut out endoporus with cutter form as Fig. 9, semi-finished articles shown in Figure 10;

J. fine finishining; Fine finishining is carried out at positions such as the yoke plane of the semi-finished articles pawl utmost point, big plane, cylindrical and mesopore, made pawl pole of brush-less generator of the present utility model as shown in Figure 1.

Claims

1. pawl pole of brush-less generator is characterized in that: pawl utmost point bottom is an annulus (1), is evenly distributed with six or eight beak shaped pawls (2) on annulus (1), and the interior inclined-plane of pawl (2) is provided with one and ends shoulder (3).