Absolute Arm presentation
H00007091 - Absolute Arm User Manual │Version 5.2.0 (2019-03-07) │10
A. ABSOLUTE ARM PRESENTATION
A.1 OVERVIEW
The ABSOLUTE ARM is a portable poly-articulated 3D coordinate measurement device, constructed from
high-grade carbon fibre, which is inherently temperature stable.
The arm – from 1200mm to 4500mm measurement volume – is available in 6 or 7 axes. The difference is
located on the wrist of the arm: 6 axes are generally enough for most of the probing
or tubing applications, while 7 axes are better for scanning applications.
6 or 7 axes
The device duplicates and enhances the movement and reach of the human arm
(shoulder, elbow, and wrist). Each element offers several degrees of freedom (2
on shoulder, 2 on elbow, 2 or 3 on wrist).
This means 6 or 7 rotation axes depending on the type (6axes / SE / SI). These
axes conventionally are named A / B / C / D / E / F and G. A and B are the Shoulder
of the arm, C and D the Elbow and E F and G the wrist.
On each axis, an encoder is giving the axis angle from which the coordinates of
the probe centre are calculated.
A, C, E and G axes have infinite rotation, allowing ergonomic comfort of use.
At the end of the arm (i.e. on F or G axis), a probe can be attached through a TKJ connector and is
automatically recognized and selected by the software.
The wrist or handle also has 3 buttons which can be used to take measurement points, delete erroneous
data, validate message boxes and perform other functions within software.
Accessories (headphones, speakers…) can be connected through Bluetooth wireless technology.
It also contains a haptic feedback motor, to warn the user through vibrations on some events.
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