The Hoffmann Group has updated the software of its loading system for automated loading and unloading of machine tools. With this update the system provides even greater flexibility and value for money when running in unmanned mode machining centres, turning and milling machines. With the new software update, the GARANT Automation Basic Plus loading system can now also handle stacked parts, place them next to the machine and even turn them over. It also reliably handles GARANT XTRIC centring vices. This provides a wide range of possibilities for automated loading of machine tools without an automation interface. The system will be showcased at Automatica 2022 in Hall A5, Stand 411.

The GARANT Automation Basic Plus loading system is equipped with a NACHI MZ12 industrial robot, which is based on a GARANT platform and can move up to ten kilogrammes of workpiece weight per operation. The system is controlled by the specially developed GARANT Human Machine Interface (HMI). The programming steps are very simple – if components have already been taught in and saved in the memory function, the teach-in process essentially only requires a few clicks. The grippers can be replaced quickly using the GARANT quick-change system with pressure maintenance valve. Thanks to the software update, the system can now also successively process and re-stack parts that have been stacked on the grid plate. Special stacking pins are screwed onto the grid plate for this purpose. Depending on the size of the component, this means that significantly more parts can be produced in a single cycle. The maximum load weight on the panel is 300 kilogrammes. Another very convenient feature is the new "Store in a different location" function. If this option is selected, the system does not place the parts back onto the grid plate, but instead puts them next to the machine (for example on a pallet or directly into a transport container), saving time when the parts are transported later on. It is now also possible to handle vices in conjunction with the GARANT Xtric 80 XS centring vice. A turning station for rotating the parts by 180 degrees if required is available as an option.

The Hoffmann Group has come up with something very special for the communication with the machine tool: the GARANT Automation Basic Plus loading system simulates the machine operator, while the GARANT AutoDoor control system is responsible for opening and closing the door. As such, the machining process is not started by the machine operator, but rather by an actuator installed on the operator panel. A magnetic field sensor picks up the electromagnetic signals at the door control system and is connected to the GARANT AutoDoor system via a cable, so it always knows the status of the machine and door. But that’s not all – the CE-compliant safety concept does not require an individual CE acceptance test on site, or a protective enclosure. A two-zone laser scanner marks out the safety area around the system. If someone enters the safety zone, the machine is automatically stopped temporarily or completely. All this means that the system requires a footprint of just eleven square metres. For customers with special requirements, the Hoffmann Group can provide comprehensive consulting as well as special solutions.

The GARANT Automation Basic Plus loading system with software update is now available to order from the Hoffmann Group. Stacking pins and the new turning station have been added to the range of accessories (GARANT AutoDoor, grid plates, SCHUNK gripper packages and fingers).