JOHNFORD DMC-1200HN HI-NET – Year 2014

Weiss Integral Spindle, 24,000 RPM, 24 Tool ATC, HSK-63, Heidenhain Scales on X, Y, Z-Axis, Air/Oil Mist for Spindle Lubrication/Cooling, Heidenhain i530-TNC Control

Travels Longitudinal Travel

(X) Axis 47.2″ Cross Travel
(Y) Axis 35.4” Vertical Travel
(Z) Axis 30″

Table to Spindle 5.9″ min/35.9″ max

Distance Between Columns 43.3″
Table Table Working Surface 51.2″ x 33.5″
Maximum Workload on Table 8,360 LBS.

Table Surface Ground / T-slotted No. of T-slots x Width 7 x 18mm Weiss Spindle (Medium Rough and High Speed Finishing Spindle Motor 31 HP high torque
Spindle Torque 53 ft/lbs @ 3000 RPM
Spindle Taper HSK-63A
Spindle Shaft Diameter 70mm
Spindle Drive System Integral Motor
Spindle Speed 0-24000 RPM
Automatic Tool Changer (HSK-63A arm type)
Number of Tools 24 tools (32, 40 opt.)
Tool Selection Bi-directional-random Tool Change Time 2.5 sec tool to tool
Maximum Tool Diameter 3″ with adjacent tools
Maximum Tool Weight 22 LBS

Tool Type HSK-63A
Maximum Tool Length 12.6″
Ballscrews and Axis Motors X-Y-Z
Ballscrew Diameter 2” XYZ x 10 pitch
Ballscrew Type Class 3 double nut pre-loaded
Ballscrew Mounting Type Pre-tensioned X-Y-Z
Servo Motor HP 5.2 – 5.2 – 9.0HP
Servo Motor Mounting Direct coupled XYZ Feeds Rapid Traverse Rate X,Y,Z 944, 944, 590 IPM Cutting Feed Rate 0.01 – 472 IPM
Positioning Accuracy +/- .0003″ full stroke Repeatability +/- .0002″

General Coolant Tank Capacity 120 gallons

Machine Weight (base machine only) 26,000 LBS
Floor Space 186″ X 118″ x 148″
Machine Power Source 208/220 Volts, 3 Phase 200 Amps** **Consult AMT or your local distributor for exact power requirements when ordering** Air Source 90 PSI

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.

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. An impressive list of standard features includes a heavy duty 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 Heidenhain i530-TNC Control is loaded with high speed machining options as standard for high speed, high accuracy machining. This machine is intended for high speed Near Net machining of complex 3D shapes and molds.