Renishaw ACR2, Руководство по установке

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Introduction
The ACR2 autochange system is an arm-changing system for the PHS servo positioning head system. It allows probe extensions or probe
adaptor 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.
System features
Modular construction Ports can be positioned in pairs anywhere on the machine.
Simple concept The change cycle is operated by CMM motion.
No power connections are needed and all sensing and overtravel
protection is contained within the PHS servo positioning head itself
(no motors, switches or sensors within the rack).
Expandable concept Any number of racks can be fitted anywhere on the machine (e.g. a
four port rack at one end and a two port rack at the other).
Versatile probing ACR2 ports can accommodate touch trigger, analogue contact or
laser scanning probes, with or without extension bars.
Safe operation Sensors on the PHS servo positioning head detect collisions and
check whether arms are correctly and safely locked in position after a
change cycle. The PHS also incorporates an overtravel mechanism to
protect against collisions.
Sealed arm locations Covers with effective seals protect electrical contacts and kinematic
locations when not in use.
System description
The ACR2 rack consists of pairs of ports that store arms. The arms are either head adapters (HA) or head extensions (HE).
The ports allow arms stored in them to be automatically locked and unlocked onto a PHS servo positioning head.
To change probe arms automatically, the CMM must be programmed to complete a series of movements using positions calculated during
the port datum routine. These movements cause a mechanism inside the port to rotate a screwdriver which engages a slot on the arm. The
slot activates a cam which, when rotated, locks the arm in place.
Manual fitment of probe arms can be achieved using the S10 autojoint key supplied.
ACR2 installation guide
www.renishaw.com
Issued 09 2020
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