ACR3 system description

Renishaw's ACR3 is a four port rack that facilitates fast, automatic probe exchange without the need for probe re-qualification. The ACR3 is a four port mechanical design that traverses the MRS rail. Driven by the motion of the CMM, it locks and unlocks the autojoint between the probe and the probe head. In addition, the ACR3 provides covered storage and protection for up to eight probes and extension bars (two four port systems can be linked to provide an eight port system).

Mounted within the CMM's working envelope, the ACR3 is combined with the modular rack system (MRS / MRS2) to form an automatic change rack for probes and extension bars that incorporate the Renishaw autojoint. Each rack port is of modular design to permit easy replacement should wear occur during the operational life of the ACR3.

Fast probe exchange cycles are achieved by the probe head docking the original probe and selecting a new one. The autochange system consists of a four port autochange rack (ACR3) and the modular rack system (MRS / MRS2) as shown below.