The metal die casting sector is set to improve efficiency by two software developments for Fanuc robots. The enhancements are targeted at robots used for unloading die casting machines. The Fanuc RJ-2 controller combines the software which is compatible with the Fanuc range of the LR Mate 100 with a maximum load capacity of 5kg to the S900 which can handle up to 300kg at the end-of-arm.
Soft Float enables the robot to detect an external force on the robot’s servo motors. On a die casting machine pressure from ejectors pushing the castings out of the die would be the external force. The software interprets the external force as a request to float in the opposite direction to the force being applied. Without this type of control the robot would record this condition as an overload and automatically stop. Once the die is firmly gripped the system goes back to its pre-programmed path.
The second software development comes into being as a high sensitivity collision detector. The software can be set at variable levels throughout the rest of the cycle. The robots are also used as trim runners, to tap holes and to stack. The software improvements enable more efficient extended periods of unmanned operations for the die casting machine.