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

A flange-type, electromagnetic braking technology, applied in the direction of manufacturing tools, metal extrusion dies, metal processing equipment, etc., can solve the problems of low magnetic permeability of products, low manufacturing efficiency, poor environment, etc., and achieve improved magnetic permeability , reduce impurities and avoid damage

CN110523899BActive Publication Date: 2021-08-13宣城市安工大工业技术研究院有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-08-13

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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.
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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...

Examples

Embodiment

[0051] to combine Figure 4 As shown, the process flow of the precision thermal processing method of the electromagnetic brake and clutch flange-type yoke in this embodiment includes blanking, upsetting, upsetting and extruding preforming, punching inner holes, precision extrusion molding and shaping. Glitches and other steps.

[0052] Specifically, the steps of the precision thermal processing method of the electromagnetic brake and clutch flange-type yoke in this embodiment are as follows:

[0053] Step S01, round billet heating: After the brake and clutch yoke soft magnet round billets are accurately cut, the forging temperature of the soft magnet round billets is controlled within the hot forging temperature range by intermediate frequency induction heating, and the hot forging temperature is 1100-1200 ℃; It is worth noting that the material of the round billet can be any kind of soft magnetic metal material, and low carbon steel round billet can also be used for blanking...