A flange-type magnetic yoke precision thermal processing method and mold for electromagnetic brake clutch

Abstract

The invention discloses a method and a mold for precision thermal processing of a flange-type magnetic yoke for an electromagnetic brake clutch, belonging to the technical field of plastic processing of metal materials. The precision hot processing method includes: step S01, heating a round blank; step S02, preforming combined process: the first step is an upsetting process; the second step is a pre-top upsetting forming process, and the third step is a punching process; step S03, Occlusion precision extrusion molding; step S04, shaping and trimming burrs. This process uses forging instead of casting, which improves the magnetic permeability of electromagnetic brakes and clutch yokes, and better meets the requirements of use; and the size of the forgings is close to the size of the finished product, and the utilization of materials reaches more than 98%. The mold involved includes an upper extrusion die, a lower extrusion die and an extrusion punch; the space formed by the butt joint closure of the upper extrusion die and the lower extrusion die is a cavity, and the lower end of the extrusion punch is provided with a cavity. For a single annular boss, the volume of the cavity is equal to the sum of the volume of the yoke blank and the volume of the extrusion punch extending into the cavity.

Description

technical field [0001] The invention belongs to the technical field of plastic processing of metal materials, and more specifically relates to a precision thermal processing method and mold of a flange-type magnetic yoke for an electromagnetic brake clutch. Background technique [0002] Flange-type yokes for electromagnetic brakes and clutches are the most important basic structural parts and core components of brakes and clutches. The structure of the product is a disc-shaped part. Specifically, its geometric feature is that there is a through hole in the middle and a The boss formed by the annular groove, the boss and the bottom flange are integrated to form a disc hub part with flange steps, and the outer ring size of the flange is larger than the outer diameter of the boss, which belongs to the disc-type axisymmetric structural part. The yoke is used as the basic part (housing) of the brake and the clutch, and is connected to other parts through the flange, and the magne...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of low manufacturing efficiency, many processes, poor environment, and low magnetic permeability of the product in the prior art precision casting method, the present invention provides a precision thermal processing method of a flange-type yoke for an electromagnetic brake clutch , Through the precision preforming and final forging forming process, the precision machining and forming of the flange type magnetic yoke is realized. This method improves the material utilization rate, lowers the manufacturing cost, and realizes forging instead of casting

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