Coreless linear motor of embedded I-shaped coil

Abstract

The invention relates to the technical field of linear motors and discloses a coreless linear motor of an embedded I-shaped coil. The coreless linear motor comprises a U-shaped stator and an I-shaped mover. The I-shaped mover comprises an I-shaped coil and a mover installation plate arranged at one end of the I-shaped coil, and the other end of the I-shaped coils is arranged in the U-shaped stator. The I-shaped coil is composed of three phase coil windings, namely, a U-direction coil winding, a V-direction coil winding and a W-direction coil winding, the coil windings are mutually embedded with one another and are uniformly braided, four groups of coil windings pass through a gap in each group of coil windings, and the gaps in the coil windings are the same. The coil in the invention is of an I shape which is formed by mutually embedding and uniformly braiding the coil windings. Compared with a traditional coreless linear motor, the coreless linear motor provided by the invention has a higher space utilization rate, a larger thrust coefficient, higher structure rigidity and better thrust uniformity.

Description

technical field [0001] The present invention relates to the technical field of linear motors, in particular to an iron-less linear motor with an embedded I-shaped coil. Background technique [0002] The linear motor has an iron core with permanent magnets installed and an armature composed of a coil facing the iron core. One of the iron core or the armature is fixed on a fixed member, and the other of the iron core or the armature is installed on a movable parts, and can make the movable parts move linearly. The mover coil of the traditional ironless linear motor is set in a T-shape or a pseudo-I shape. [0003] The coil of the traditional T-shaped ironless linear motor is formed by laying U, V, and W three-way coil windings directly side by side, so the coil density per unit volume is small, and the coil space utilization rate is small, resulting in a low thrust coefficient; at the same time, due to The coil windings are laid directly side by side, so the coils cannot be ...

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Problems solved by technology

[0003] The coil of the traditional T-shaped ironless linear motor is formed by laying U, V, and W three-way coil windings directly side by side, so the coil density per unit volume is small, and the coil space utilization rate is small, resulting in a low thrust coefficient; at the same time, due to The coil windings are laid directly side by side, so the coils cannot be well connected to each other, the rigidity is not good, and there is a risk of cracking when the temperature rises

[0004] The coils of the traditional pseudo-I-shaped coreless linear motor are laid by U, V, and W three-way coil windings side by side, staggered and overlapped, so the gap between the coil windings is large, resulting in poor uniformity of thrust and uneven speed.

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