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The principle of Operation and Application of a Linear Shaft Motor - page 31 / 31

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Shaft

Magnet

Coil

Slider

What is a shaft motor?

This is a direct drive-linear-servomotor which is controlling movement by switching on the current to the shaft arrayed inside with magnets and the coil rolled in the shape of a cylinder

Structure of a shaft motor

Cables for moving part

Cables for encoder

Table

Magnet shaft

Linear encoder

Linear guide

Moving part (coil)

Shaft holder

Application

Using high resolution                      High precision position accuracy

Using stability in speeding and less than 0.05% of unevenness of movement                 Precise measurement

Using 0.1μm of repetition positioning accuracy               Pinpoint alignment

A system can be compact and it can build simply.            System design with high flexibility

2 heads of a shaft motor are used at the X-axis

1 head of a shaft motor is used at the Y-axis

Features of a shaft motor

Quiet, no friction during movement

Big thrust (6000N)

Repetition of position accuracy is available in 0.1μm.

Compared with the other drive system, it is very stable in speeding and possible to control with stable speed.

Possible to operate by a high-speed drive (6.5 m/Sec) to low-speed drive (8μm /Sec).

Can be used in strong environments such as underwater and in a vacuum.

A system is compact and simple.

Summary

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