2014 JOHNFORD DMC-1200HN HI-NET, 24,000 RPM High Speed Bridge Mill, Double Column, Gantry Mill Mold & Die

Description

Explore the precision of the JOHNFORD DMC-1200HN HI-NET, a new Gantry Machining Center with a 24-tool ATC, 24,000 RPM Weiss Spindle, X/Y/Z Heidenhain Scales, and HSK-63 Taper. Perfect for dynamic manufacturing needs.

Description
The Hi-Net DMC-1200HN is a high performance double column machining center designed for high speed machining of complex 3-D shapes. The Hi-Net concept was developed to meet the needs of high speed, net shape machining in mold, die, and aerospace machining. Simply put, the machine is built to machine shapes in a variety of materials at high feedrates and with a high degree of accuracy.

To accomplish this task, it takes a very well built machine. We start with a cast iron machine frame that weighs in at 26,400 lbs. The machine design features a moving table and fixed column for maximum rigidity. A rugged 90 degree bridge with offset Y axis ways and a wide saddle keeps the spindle center line extremely close to the bridge for rigidity. The columns and bridge are a one piece casting for the best rigidity. The massive Z axis head and Y axis saddle feature square box ways coated with Turcite and have been designed with diagonally arranged ribs that will help reduce the amount of distortion that is caused by years of continued service. The X axis table traverse is accomplished via heavy duty Schnerberger roller linear ways for accurate positioning of heavy work pieces. Accurate positioning is carried out by large diameter, pre-tensioned ballscrews and powerful servo motors. The servo motors are directly coupled to the ballscrews via rigid couplings.

Weiss integral spindles, made in Germany, are standard equipment. For heavy cutting and fine finishing together, the 110mm diameter shaft 15,000 RPM HSK-100A spindle with 56HP and 300 ft/lbs of torque is an excellent choice. For medium roughing and even finer finishing, a 70mm diameter shaft 24,000 RPM HSK-63A spindle with 31HP and 53 ft/lbs of torque is the answer. Both spindle features ceramic bearings with Vogel air/oil mist lubrication for best life. A Weiss 18,000 RPM grease packed spindle is also available

An impressive list of standard features includes a heavy duty 24 tool ATC (HSK-100A) or 24 tool (HSK-63A) that is mounted to the machine column for easy maintenance, a chip removal system consisting of 2 screw type conveyors on each side of table that discharge into a caterpillar type conveyor at the end of the machine, a high volume coolant system, and a full machine enclosure (including the top) to contain chips and coolant. The Fanuc 31iMB with powerful alpha I series servo motors and loaded with high speed machining options is standard for high speed, high accuracy machining.