The You Ji VMT-1000+Y Vertical Mill / Turn Center is a compact, high precision, heavy duty machine. It combines a 3 axis 5 face machining center with vertical turning. The rigid vertical column and base are meehanite castings, heavily ribbed for reduced thermal distortion and vibration dampening. It is designed for turning and 5 sided or 4+1 axis milling of medium size workpieces, producing complete parts in a single set-up.
The X,Y, and Z axis rigid box guideways are completely enclosed and a forced lubrication system assures high precision. The mating surfaces are coated with Turcite-B and hand scraped for perfect fit and precision. The large 2” diameter class 3 precision ballscrews in all 3 axes are driven directly by the servo motors, eliminating belts or gears for high precision. The machine design features a fixed turning spindle and a 3 axis (XYZ) moving column for operator convenience and efficient chip removal.
The turning table construction is a heavy duty design incorporating high precision SKF NN type double roller bearings. The spindle also is protected from coolant contamination via double labyrinth seal as well as air purge. The NN type spindle bearings are used to endure high centrifugal loads and big spindle loads. The 30 HP high torque Fanuc spindle motor coupled with the 2 speed gearbox transmission system provides high torque at a low RPM. The spindle produces nearly 2,200 ft.lbs. of turning torque for heavy cutting. The table is equipped with a full C axis, allowing for 4 axis simultaneous milling, making this machine ideal for aerospace and energy industry applications.
The B axis head features a hirth coupling to lock the head position in place. Standard is a 90 degree index for horizontal / vertical milling. 5 degree and 1 degree indexing are optional. The 3500 RPM 50 taper milling spindle is powered by 20HP Fanuc spindle motor and produces over 178 ft./lbs. of torque.
The machine is standard with many performance enhancing features such as a heavy duty 24 tool arm type ATC, complete chip removal system consisting of a side discharge caterpillar type chip conveyor, spindle chiller, and Fanuc 31iT-B Plus CNC control. This versatile machine tool is designed for standalone applications or is easily integrated into a production line.
Maximum Turning Diameter 39.4″
Maximum Swing Diameter 39.4″
Maximum Cross Travel (X-Axis) 44.09” (-1.97” / + 42.12”)
Maximum Longitudinal Travel (Z-Axis) 44.68″
Maximum Off-Center Travel (Y-Axis) 29.5” (+/- 14.76” from center)
Distance from Milling Spindle Nose to Chuck Face (Vertical) 37.87″
Distance of Milling Spindle Face to Chuck Centerline (Horizontal) 33.35″
Spindle
Spindle Motor (Fanuc P Series) 30 HP Double Wound (more torque at lower RPM than a 50HP single wound motor)
Spindle Drive 2 Speed ZF Planetary Gearbox
Spindle Nose A2-11
Spindle RPM 0-1500
Spindle Bearing Diameter 7.87″
Spindle Inside Taper M. T. 7
Hydraulic Chuck 24″ 3-Jaw
ATC
Tool Positions 24 (40/60 opt.)
ATC Type Arm-Type with Tool Chain
Tool Mounting #50 Taper
Maximum Tool Diameter with Adjacent Tools 5″
Maximum Tool Diameter without Adjacent Tools 10″
Maximum Tool Length 13.8″
Maximum Tool Weight 55 lbs.
Tool Change Time 15-20 Seconds
Ballscrews and Axis Motors
Z-Axis Ballscrew Diameter 50mm (1.96″) x 16mm Pitch
X-Axis Ballscrew Diameter 50mm (1.96″) x 10mm Pitch
Y-Axis Ballscrew Diameter 50mm (1.96″) x 12mm Pitch
Ballscrew Type Class 3 Double Nut
Ballscrew Mounting Type Pre-loaded, Double Anchored
X-Z-Y-C Servo Motor HP X=8HP / Z=12HP / Y=5.2HP / C=4HP
C-Axis and B-Axis Milling Spindle
Milling Spindle Motor 20 HP
Spindle RPM 3,500
Tool Shank Type BT-50 (CAT-50 opt.)
Spindle Torque 178 ft./lbs. at 437 RPM
B-Axis Head Rotation 0-90° (2 positions) 5° or 1° Index Opt.
C-Axis Indexing .001°
C-Axis Rapid Speed 3.4 RPM
C-Axis Positioning Accuracy +/- 7.5 Arc Seconds
C-Axis Repeatability +/- 5 Arc Seconds
Feeds
Rapid Traverse Rate X, Y, Z 394, 394, 394 IPM
Cutting Feed Rate 0.01 – 157 IPM
Positioning Accuracy +/- .0003″ Full Stroke
Repeatability +/- .0002″
General
Coolant Tank Capacity 100 Gallons
Coolant Pump Motor 4 HP
Machine Weight 48,400 lbs.
Floor Space 220″ x 228″ x 160″
Machine Power Source 208/220V, 3-Phase, 150 Amps
Consult AMT or local distributor for exact power requirements when ordering
Hydraulic Pump Motor 7.5 HP
Spindle orientation
3 Jaw 24” hydraulic chuck
1 set of soft jaws
Coolant system with coolant through the tool holders
Tool kit
Halogen lamp
1 set operation manual
24 position ATC
Caterpillar type chip conveyor with chip bucket
Heat exchanger for electrical cabinet
Automatic lubrication system
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