As aerospace manufacturing continues to ramp up in North America, the a61nx-5E from Makino offers a unique and appropriately sized design for small components featuring 3-D contours, without compromising the highly productive spindle performance and 5-axis capabilities of larger aerospace machines.
The a61nx-5E provides enhanced rigidity through a three-point bed casting and tiered column structure. It has X-, Y- and Z-axis travels of 730mm x 730mm x 680mm (28.7” x 28.7’ x 26.8”), respectively. Linear acceleration is 1G on the X- and Y-axes, and 0.8 in the Z-axis. The direct-drive rotary tables on the a61nx-5E offer improved access to all sides of a part, especially when using shorter tools—yielding improved performance and accuracy. A closed-loop thermal management system ensures reliability and accuracy by removing heat generated by the large direct-drive rotary table motors. The a61nx-5E also uses the same proven tool magazines as the nx-Series of machines with a ring style ATC60 as standard. Optional matrix magazines with capacities of 133, 218, or 313 are available options.
High-Speed, High-Performance Spindle Configurations
The a61nx-5E comes equipped with a standard 14,000rpm spindle with 240 Nm of duty-rated torque and 30kW of duty-rated output. This configuration is ideal for the premium job shop needing a 5-axis platform to machine a wide variety of materials. Other spindle configurations include an optional 14,000rpm high-torque version and a 20,000rpm spindle for those manufacturers that need slightly more speed.
For those companies handling high-performance, high-volume aluminum machining, the a61nx-5E has the option for the new 24,000rpm high-performance core-cooled spindle. This spindle provides up to 80kW of duty-rated (60kW continuous) output, delivering four to five times more metal removal per minute than typical high-speed spindles, and offering superior finishing feed rates. This high-speed spindle brings the aluminum roughing and finishing capabilities that are typically associated with Makino’s much larger MAG machines into a smaller platform, enabling cycle-time reductions of 45% to 50% in complex parts (when compared to a typical 20,000rpm high-speed spindle).
Innovative Pallet-Change Configuration
The a61nx-5E’s innovative pallet changer eliminates material-handling challenges by enabling operator-friendly part loading and unloading via a 45-degree pivot point that transfers pallets from a vertical to horizontal orientation. The loading height is an ergonomically friendly 32” off of the floor, improving safety at the loading station. Workpiece limitations are a generous 600mm (23.62”) by 385mm (15.15”), accommodating easy crane clearance through the doors. For customers wishing to add automation to their 5-axis machining, this unique pallet-change system is fully compatible with the Makino MMC-R robotic fixture plate distribution