Tech Briefs Magazine - April 2021 - MD-14

Precision Position Feedback for Smart Manufacturing

D

irect-drive (DD) motor technology
has been around for more than 40
years but its widespread adoption has
happened only recently. Over the past
few years, the cost differential between
linear motor systems and traditional ball
screw systems has halved.
Chieftek Precision Co., Ltd. (CPC),
based in Taiwan, is a global manufacturer of precision motion control products
such as linear guide rails and directdrive motion stages. In recent years,
CPC has invested significant resources in
motion control-related development
projects including linear stages, DD motors, and DD rotary tables - many of
which use Renishaw's high-performance
linear and rotary (angle) encoders.

Challenge
While the motion control equipment
market continues to see strong growth,
competition remains fierce. Manufacturers need to stand out in a crowded
marketplace in order to break through.
James Wu, R&D Department Manager
at CPC, explained his company's strategy. " We started out as a miniature guide
rail manufacturer and we are a leading
player in this market with more than
half of our revenues coming from guide
rail products.
" In recent years, " he continued, " we
have seen growing demand for directdrive motors and associated components and we have also invested more
resources in this area, which now accounts for around 70% of our total R&D
expenditure. "
He added that " in a crowded marketplace, efforts to minimize production
costs are essential. Most of our machine
components, motors, and drivers are
developed and manufactured in-house.
Our biggest challenge is ensuring that
our motors are competitive.
" In terms of the parts we buy in, " he
continued, " we keep our costs as low as
possible by looking for high-performance parts that offer good value for
the money. We also develop our own
motion control software that meets a
wide range of customer requirements.
Product customization will become increasingly important as we enter the
new Industry 4.0 era. "

The RCDM disc scale.

An ATOM optical encoder in a mini rotary platform application.

14

Motion Design, April 2021

Cov

ToC


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Tech Briefs Magazine - April 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - April 2021

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