Makino Announces A99E HMC


MASON, OH”November, 2001” The A99E horizontal machining center (HMC) has been completely redesigned to substantially upgrade the quality and performance of the machine. This all new HMC replaces the former A99, and includes new designs and dimensions that enhance its strength, metal removal capability, speed of operation and workzone size.

The new A99E has X, Y and Z-axis travels 49.2" x 43.3" x 49.2" (1,250 x 1,100 x 1,250mm), more than 35-percent larger than its predecessor. The new four-bearing 40 horsepower 50 taper spindle has a top speed of 10,000 rpm. The 31.5" (800mm) square pallet has a maximum workzone of 57"d x 57"h (1,450 x 1,450 mm), which is nearly 60-percent larger than the previous model.

This new version from Makino is ideally suited for manufacturing in the diesel engine block, transmission and semiconductor markets. The A99E accepts loads up to 4,400 lbs. (2,000 kg), which is 12-percent higher than its predecessor, with an optional upgrade to 6,600 lbs. (3,000 kg). Cutting feedrates and rapid traverse rates are at 1,970 ipm (50m/min).

A 40-tool magazine is standard on the A99E. An HSK-A100 spindle is an available option, as are 90, 132, 188 and 244 tool storage options. Maximum tool capacities have also been substantially increased. The maximum tool diameter is 300 mm, and the maximum tool length is 540 mm, a 30-percent increase over the original A99. An optional long tool magazine rack is available to handle special tools up to 850 mm in length.

Capability, Speed and Size
The A99E has a tremendous metal removal rate capability of 244 cubic inches per minute (4,000 cm3/minute) for softer metals such as aluminum, and a 61 cubic inches per minute rate (1,000 cm3/minute) for mild steel. It also has a 360-degree bi-directional index table for superior versatility and machining flexibility. The 1.7-second automatic tool change and the 5.0-second chip-to-chip time significantly reduce the non-cutting time of the A99E.

As with all Makino A-series machines, the highly rigid bed allows for use of a three-point leveling system, which assures precise squareness and straightness in every axis, even when loaded with the heaviest allowable workpieces . The A99E has a center trough design effective for dry machining applications . A double-layer lift-up chip conveyor is standard, which is designed to handle both large and fine chips, and includes both a scaper, belt conveyor and drum filter.

A-Series Features
Makino™s advanced spindle core cooling system, a standard feature on all A-Series machines, circulates a large volume of temperature controlled cooling oil through the center of the spindle to cool it directly from the inside. Additionally, with under race lubrication, cooling oil flowing through the spindle is circulated through holes in the inner bearing races to lubricate the bearings. The adoption of this cooling and lubrication technology combined with core-cooled ball screws makes it possible to achieve greater rigidity, enhanced accuracy and faster machining speeds.

Geometric Intelligence (GI), another Makino standard, permits high feedrates with measurably higher accuracy over entire part routines and with shorter total cycle times. Using "look ahead" algorithms, GI software predicts and compensates for machine dynamics providing unmatched feeds and accuracy. The A-Series™ PRO3 control and easy-to-use graphic interface simplify programming of toolpaths for different parts.

The A-Series machining centers are Makino™s answer to high-productivity machining for a wide range of components. With high metal removal rates, fast feedrates, greater accuracy, greater stability and increased overall productivity, Makino™s machining centers provide demonstrably higher quality, shorter time-to-market, and the flexibility to meet changing production volumes, shorter part life cycles and reduced machining costs.

Makino is a global provider of advanced machining technology and application support for the metalcutting and die/mold industries. Makino manufacturing and service centers are located in the United States, Japan, Germany, Singapore, Italy, France, Korea, Taiwan, China, Mexico, Brazil, and India, and are supported by a worldwide distributor network. For more information visit Makino on the Web