The a92 horizontal machining center (HMC) is the newest addition to Makino's line of production machinery. The rugged speed and durability of the a92 machine is perfect for use by shops in North America and around the globe for manufacturing parts used by the aerospace, automotive, semiconductor, and oil field markets.

"The size, rigidity, power, and spindle torque of the 800 x 1000 mm pallet machine make it a very powerful and stable tool," according to Tim Jones, HMC product line manager for Makino. "This is especially beneficial when used in conjunction with the 'Super High Torque' package, which is ideally suited for cutting aerospace titanium components where torque and axis thrust are essential."

The performance of the a92 can be further enhanced for structural aerospace component machining in aluminum. A 20,000 rpm spindle and Super Geometric Intelligence (SGI.4) motion control allow metal removal rates approaching 300 cubic inches per minute. SGI.4 motion control allows high-speed machining while achieving high-accuracy finishing capabilities. Its center trough design facilitates excellent chip management in a high metal removal environment.

Features and Specifications

The rapid feedrate of the a92 machine is 1,969 IPM (50m/minute), with the acceleration/deceleration rate at 0.4 g. It has X-, Y-, and Z- axes ranges of 59 x 49 x 53 inches (1,500 mm x 1,250 mm x 1,350 mm), and comes standard with a 10,000 rpm spindle. Additional spindle options range from the 8,000 rpm Super High-Torque Spindle to the 20,000 rpm High-Speed Spindle.

The extremely accurate positioning standard of the machine is +/- 0.00010 inches, with a repeatability of +/- 0.00006 inches. The squareness geometry is 0.0005 inches in 20 inches, and straightness geometry at 0.00031 inches in 20 inches.

The a92 has a 31 x 39-inch pallet capable of handling workpieces up to 59 inches (1,500 mm) in diameter and height, and weighing up to 4,400 pounds (2,000 kg), with an option up to 6,600 pounds (3,000 kg). The automatic pallet changer on this machine allows for a full pallet change in 23 seconds. The standard automatic pallet changer allows significant setup reduction as compared to traditional machinery used for medium to large structural aerospace component machining.

The 360-degree position index table of the new machine contains four tapered cone pallet clamps positioned specifically to achieve unparalleled high-thrust machining in the upper extreme of the Y-axis.

The automatic tool changer has a capacity of 40 tools, and can handle a maximum tool diameter of 14 inches and maximum tool length of 35 inches. The tool-to-tool time is a brisk 1.7 seconds. Larger ATCs ranging from 92 to 301 are also available options.

Copyright © 2001 - 2008 by Makino, Inc. All rights reserved.