Forming machine, in particular a forging hammer
AssigneeLangenstein & Schemann GmbH
InventorMarkus Otto
Life of this patent
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Abstract
The underlying invention relates in particular to a forming machine, having an electromagnetic linear motor with a linear mover and multiple coil units each with a predetermined coil pole pitch (S) which is measured in the direction of the movement axis. The linear mover includes, in an alternating arrangement along the longitudinal axis (L) thereof, first permanent magnets which are magnetized transversely to the longitudinal axis with a predetermined first magnetic pitch (T1) and second permanent magnets which are magnetized in the direction of the longitudinal axis (L) with a predetermined second magnetic pitch (T2), wherein a ratio of coil width (S) to first magnetic pitch (T1) is 3:1, and wherein a ratio of first magnetic pitch (T1) to second magnetic pitch (T2) is 2:1.
Claims19
A forming machine, in particular a forging hammer, for forming workpieces, said forming machine comprising:
- an electromagnetic linear motor designed for driving a die, in particular hammer heads;
- wherein the linear motor comprises multiple coil units, which are arranged one behind another along a movement axis (L) of a linear mover, define a mover space and comprise in each case a predetermined coil pole pitch (S) in the direction of the movement axis (L);
- wherein the linear mover includes, in an alternating arrangement along the longitudinal axis (L) thereof:
- first permanent magnets which are magnetized transversely to the longitudinal axis (L) with a predetermined first magnetic pitch (T1), and
- second permanent magnets which are magnetized in the direction of the longitudinal axis (L) with a predetermined second magnetic pitch (T2);
- wherein a ratio of coil pole pitch (S) to first magnetic pitch (T1) is 3:1, and wherein a ratio of first magnetic pitch (T1) to second magnetic pitch (T2) is 2:1.
The forming machine in the form of a forging hammer, the forging hammer comprising:
- the electric linear motor;
- and
- the linear mover, wherein the linear mover includes along the longitudinal axis (L) thereof:
- first permanent magnets with a predetermined first magnetic pitch (T1) and preferably a magnetization which extends transversely relative to the longitudinal axis (L), and
- in an alternating arrangement with the first permanent magnets additionally second permanent magnets with a predetermined second magnetic pitch (T2) and preferably magnetization which extends parallel to the longitudinal axis wherein:
- the first and second permanent magnets are realized as ring magnets, and are fixed, in particular clamped, on a piston rod which reaches through the ring magnets:
- a hammer head, to which a forming tool is attached, is fastened on an axial end of the piston rod of the linear mover.
Dependencies are inferred from the claim text.