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INTRODUCTION
1.1 System features
Manual No. H-1000-4045
The ACR2 autochange system is an arm-changing system for the PHS1
servo positioning head system. It allows probe extensions or probe adapter
arms to be exchanged to suit the probing task required.
Arms are locked or unlocked from the head by motion of the machine itself.
The head engages a rack port and the machine drives the port up to unlock
an arm or down to lock it in position.
No power connections or signal connectors are necessary to the rack,
making installation very simple.
The ACR2 is supplied as pairs of rack ports which are mounted onto a
suitable fixture supplied by the OEM. The system is modular and any number
of port pairs can be used anywhere on the CMM.
Modular construction
Simple concept
Expandable concept
Versatile probing
Safe operation
Sealed arm locations
Ports can be positioned in pairs anywhere on
the machine
The change cycle is operated by CMM motion
No power connections are needed and all
sensing and overtravel protection is contained
within the PHS1 servo positioning head itself;
no motors, switches or sensors within the rack
Any number of racks can be fitted anywhere on
the machine, eg a 4 port rack at one end and a
2 port rack at the other
ACR2 ports can accommodate touch trigger,
analogue contact or laser scanning probes, with
or without extension bars
Sensors on the PHS1 servo positioning head
detect collisions and check whether arms are
correctly and safely locked in position after a
change cycle. The PHS1 also incorporates an
overtravel mechanism to protect against
collisions
Covers with effective seals protect electrical
contacts and kinematic locations when not in
use
INTRODUCTION
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