CN102211268A

CN102211268A - Manufacture process of automobile generator finish-forged claw pole capable of reducing noise

Info

Publication number: CN102211268A
Application number: CN201010163259XA
Authority: CN
Inventors: 不公告发明人
Original assignee: JINHUA SIMPO PRECISION FORGING AUTO PARTS CO Ltd
Current assignee: JINHUA SIMPO PRECISION FORGING AUTO PARTS CO Ltd
Priority date: 2010-04-06
Filing date: 2010-04-06
Publication date: 2011-10-12

Abstract

The invention relates to a manufacture process of an automobile generator finish-forged claw pole. The method process comprises the following steps of: 1, obtaining a claw pole blank through preforging, rough forging, finish forging and trimming; 2, removing oxide skin of the claw pole blank through shot blasting, and then annealing, phosphating and saponifying the claw pole blank subjected to oxide skin removal; 3, placing the treated claw pole blank into a die cavity of which size is the same as the size of a finished claw pole (the die closing position is provided with a discharge tank), closing an upper die and a low die by using a pressure over 500 ton, and squeezing excess materials into the discharge tank; and 4, cutting off the excess materials of the discharge tank by a punch press and then directly obtaining a desired finished claw pole (without needing machining again).

Description

Automobile generator finish forging claw pole reduces the manufacturing process of noise

Affiliated technical field

The present invention relates to the manufacturing process that a kind of automobile generator finish forging claw pole reduces noise, especially automobile current generator is reduced noise, the product appearance quality behind the finish forge is effectively controlled, thereby improves service life.

Background technology

At present, automobile generator claw pole has casting and forges two kinds of technologies; Its weak point is that the temperature shakiness causes the different unifications that influence size of shrinkage ratio when producing, so need to add allowance just can reach the finished product pawl utmost point again through machining requirement, but the deviation that in machining process, produces, can bring some uneven weight, and surface and chamfering and fillet have the left out-of-flatness of ball blast, can certain influence be arranged to the air-flow that rotor rotation produced, electromagnetic noise can't be guaranteed fully.

Summary of the invention

A kind of automobile generator finish forging claw pole reduces the manufacturing process of noise, it is characterized in that: obtain the blank pawl utmost point that a size is amplified a little by blocking, rough forge, finish forge, side cut, the pressure that the finished product pawl utmost point die cavity of after ball blast descale and phosphatization, the saponification it being put into a high rigidity adds 500T is extruded onto unified size with it, the surface must the smooth vestige that does not stay any ball blasts, unnecessary material is clamp-oned in the hopper and with punch press it is excised, and directly obtains a complete finished product pawl utmost point.The product technology of this processes is simple, size is unified, the precision height, need not reprocess, dynamically balanced quality is less, and surface and chamfering and fillet are smooth smooth, inner pore-free produces, thereby reduce the air-flow that rotor rotation produced, more effective reduction electromagnetic noise has improved the automobile current generator product quality.

Description of drawings

Fig. 1 is moulding tool structure figure of the present invention.

Among Fig. 1: 1. be the moulding patrix; 2. be the moulding counterdie; 3. be liftout in the demoulding; 4. be demoulding bottom knockout; 5. be discharge groove; 6. be pawl utmost point die cavity.

The specific embodiment

Referring to Fig. 1, to pass through blocking, rough forge, finish forge, side cut obtains the blank pawl utmost point that a size is amplified a little, ball blast descale and phosphatization, after the saponification it is put into the finished product pawl utmost point die cavity (6) of high rigidity, the pressure that adds 500T is with moulding patrix (1) and moulding counterdie (2) closure, the blank pawl utmost point is extruded onto unified size, the surface must the smooth vestige that does not stay any ball blasts, unnecessary material is clamp-oned in the hopper (5), open moulding patrix (1) and moulding counterdie (2) then, with liftout in the demoulding (3) and demoulding bottom knockout (4) the finished product pawl utmost point is ejected from die cavity (6), and with punch press clout is excised, directly obtain a complete finished product pawl utmost point.

The product technology of this processes is simple, size is unified, the precision height, need not reprocess, dynamically balanced quality is less, and surface and chamfering and fillet are smooth smooth, inner pore-free produces, thereby reduce the air-flow that rotor rotation produced, more effective reduction electromagnetic noise has improved the automobile current generator product quality.

Claims

A kind of manufacturing process of automobile generator claw pole finished product has following processing step:

1. obtain pawl utmost point blank by blocking, rough forge, finish forge, side cut.
2. pawl utmost point blank ball blast descale and annealing, phosphatization, saponification are handled.
3. the pawl utmost point blank that will handle put to the die cavity of finished product pawl utmost point same size in (the matched moulds place of die cavity is provided with discharge groove), with the upper and lower mould closure, unnecessary material is clamp-oned discharge groove with the pressure more than 500 tons.
4. punch press cuts away the clout of discharge groove, directly obtains a required finished product pawl utmost point (need not machined again).