A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

An induction heating method includes a step of supplying a ring-shaped member to a predetermined section serving as a heating target section using an induction coil, and a step of moving the ring-shaped member along a reference axis so as to pass through the predetermined section. The moving step includes controlling contact between the ring-shaped member and a different member by a contact control portion.

A traverse hardening device performs traverse hardening on a shaft-like body in which a large diameter portion having a relatively large outer diameter and a small diameter portion having a relatively small outer diameter are connected via a level difference portion. The device includes: first divided coils annularly arranged around a motion center line at a first position on the motion center line; second divided coils annularly arranged around the motion center line at a second position different from the first position on the motion center line; a first divided coil drive unit configured to bring the first divided coils close to and away from the motion center line; a second divided coil drive unit configured to bring the second divided coils close to and away from the motion center line; and a control unit for the first divided coil drive unit and the second divided coil drive unit.

The invention relates to a method for heating a vehicle wheel, in particular as a preparation for a subsequent shaping method, in which at least a part of the vehicle wheel is heated by means of inductive heating using an inductor.

traverse hardening device performs traverse hardening on a shaft-like body in which a large diameter portion and a small diameter portion are connected via a level difference portion. The device includes a plurality of divided coils which are annularly disposed around a central axis and through which a high-frequency current flows; and a coil drive unit that brings the divided coils close to and away from the central axis. Each of the divided coils includes a plurality of protruding coil portions each having a shape protruding in a direction away from the central axis, and the protruding coil portions are disposed so as to at least partially overlap each other in an extending direction of the central axis and to overlap each other in a radial direction around the central axis.

A magnetic induction furnace configured to heat solid or tubular metal billets, of various lengths and diameters, made of non-ferrous materials. The furnace includes a fixed body in which there is arranged an electric motor having an annular rotor rotatably disposed in a stator. The annular rotor is joined to a rotor body carrying a plurality of permanent magnets arranged so as to define a hollow magnetic cylinder having a cavity configured to contain a non-rotating billet to be heated. The permanent magnets of the rotor body comprise main permanent magnets magnetized in the radial direction with respect to such rotor body and auxiliary permanent magnets magnetized in the axial direction. The permanent magnets generate flux lines of a magnetic field directed inwardly, towards an interior of the cavity configured to contain the billet so as to improve the heating thereof.