Johnford DMC-1200HN HI-NET VERTICAL MACHINING CENTERS. VMC's

 

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

 

SPINDLE (WEISS)

SPINDLE MOTOR ............................... 31 HP INTEGRAL

SPINDLE TORQUE .............................. 53 FT/LBS AT 3000 RPM

SPINDLE TAPER ............................... HSK-63A

SPINDLE SHAFT DIAMETER ...................... 70mm

SPINDLE DRIVE SYSTEM ........................ INTEGRAL MOTOR

SPINDLE SPEED ............................... 0-24000 (AIR / OIL MIST LUBRICATION)

        

AUTOMATIC TOOL CHANGER (ARM TYPE)

NUMBER OF TOOLS ............................. 24 TOOLS

TOOL SELECTION .............................. BI-DIRECTIONAL-RANDOM

TOOL CHANGE TIME ............................ 2.5 SEC TOOL TO TOOL

MAXIMUM TOOL DIAMETER ....................... 3" WITH ADJACENT TOOLS, 4” WITHOUT

MAXIMUM TOOL WEIGHT ......................... 22 LBS

TOOL TYPE ................................... HSK-63A

MAXIMUM TOOL LENGTH ......................... 12.6"

 

BALLSCREWS AND AXIS MOTORS

X-Y-Z BALLSCREW DIAMETER .................... 2” X, Y, Z 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**

AIR SOURCE .................................. 90 PSI

 

EQUIPPED WITH:

HEIDENHAIN I530-TNC CONTROL

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,

 

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.