JPH0383907U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a mold for molding an anisotropic ring-shaped permanent magnet to which this invention is applied, Fig. 2 is a current circuit diagram in the above example, and Fig. 3 is a detailed diagram of the current circuit. Figure 4 is a graph showing the relationship between the direction of current and the direction of magnetic flux, Figure 5 is a graph showing the relationship between distance from the first circuit surface and magnetic field strength, Figure 6a,
Figures b and c respectively show preferred wiring examples according to this invention, Figures 7a and b are explanatory diagrams of radial anisotropy and polar anisotropy, respectively, and Figures 8a to d are
FIG. 9a is a process diagram of the compression molding method, and FIG. 9a is a diagram showing a conventional coil winding procedure, and FIG. 9b is a current circuit diagram thereof. 1, 9... Mold, 2, 10... Groove for winding the conductor, 3
, 11... Conductor wire, 4... Hole for winding the conductor wire, 5, 12...
Sleeve, 6, 13...Cavity, 14...Upper punch, 15...Die, 16...Lower punch, 17...Core,
18...Feeder, 19...Powder, 20... Molded body.

Claims (1)

[Claims for Utility Model Registration] 1. In a device that applies a magnetic field to a ring-shaped material to be processed, a coil wound around a mold yoke that accommodates the material to be processed is connected to the axis of a cylinder formed by a mold cavity. forming a first circuit in a plane facing the axis and a second circuit in a plane parallel to the axis and extending radially;
and a structure of a magnetic field application device in which adjacent circuits of the second circuit generate magnetic fields in directions that repel each other. 2. The structure of the magnetic field application device according to claim 1, in which the first circuit and the second circuit are connected in series.