The Dual Axis Linear Stepper Motors

Table of Content

Introduction
Advantages
Applications

Introduction

Dual axis linear stepper motors offered by H2W Technologies are perfect for open loop positioning applications that require 2 axis of motion in a single plane. They can function at speeds of up to 80 in/sec [2 m/sec] and strokes of up to 20 in x 30 in [0.5 m x 0.75 m]. When coupled with a micro-stepping drive and indexer, linear stepper motors are capable of very precise position, acceleration control, and velocity.

The moving assembly known as the “forcer” is supported by magnetically preloaded air bearings that are imbedded in the forcer’s active surface. The bearings are designed to hold the customer’s payload, and to maintain the required 0.0005 in to 0.0010 in [12 to 25 µm] gap between the forcer and the platen.

For each axis, the step and direction signal is emitted from two separate micro-stepping drives (2 or 4 phase). A 2-axis indexer is needed to transmit step and direction signals to the drivers. For 4 phase motors, the full step is 0.005 in [125 µm] and for 2 phase motors the full step is 0.010 in [250 µm]. Resolutions in the order of 0.5 to 1 µm can be achieved with micro-stepping.

The dual axis linear stepper motor is a complete two-axis, single plane air bearing positioning system with the bearings, the motor, and the positioning system all integrated into a single compact package. Incorporating linear encoders with the stepper motor allows for a hybrid, closed loop positioning system.

Advantages

The main advantages of the dual axis linear stepper motors are as follows:

  • High speed
  • Low profile and small cross section
  • Multiple forcers on a single platen
  • Servo tuning is not required

Applications

The main applications of the dual axis linear stepper motors are given below:

  • Fiber optic
  • Wire bonders
  • Pick and place
  • Parts transfer

This information has been sourced, reviewed and adapted from materials provided by H2W Technologies.

For more information on this source, please visit H2W Technologies.

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