Fast pallet change - now of up to 1,000 kg

The compact Schunk robot couplings VERO-S NSR continue to set standards at high-efficiency, robot-supported pallet change on machine tools: with the module VERO-S NSR maxi 220 the system is becoming even in the heavyweight class a superior favorite for pal-let handling. It transfers torques up to 4,000 Nm, and can reliably handle up to 1,000 kg (at 800 x 800 mm). Due to the developed locking system with patented strokes (fast and clamping stroke) from Schunk, such large masses can be handled. Locking is done form-fit, and is self-retaining. All the components of the powerhouse are made of hardened, stainless steel.

In order to ensure a process-reliable function in challenging environments, it is completely sealed against chips and coolant. Moreover, a standardized cleaning function ensures a chip-free surface contact between pallet and robot coupling. For process monitoring, locking and unlocking conditions are monitored via a position sensor, and the presence of pallet via an inductive proximity switch. Repeat accuracy amounts to 0.02 mm.

Upgrade of Modules up to 350 kg

The innovative family-owned company also completes the VERO-S NSR sizes with smaller and medium-sized sizes: in order to achieve maximum process stability, these standard modules are also equipped with a cleaning function now. Steel inlays at the contact areas make the robot couplings extremely wear-resistant. Despite the upgrade, the module weight remains unchanged. Due to the consequent lightweight design, the modules with optimised interfering contours weigh 400 g (NSR mini 100), 1,600 g (NSR 160).

They are suitable for reliable handling of pallets up to 75 kg (at 200 x 200 mm), or up to 350 kg (at 400 x 400 mm). Together in a team with the new heavy-duty module NSR maxi 220, they are covering the complete range from 1 to 1,000 kg.

(Satish Sadasivan, Schunk Intec India Private Limited, Bangalore. Tel: 080-40538999. Fax: 91-80-40538998. Email: info@in.schunk.com)