NEW MILLTRONICS VK4II 3 Axis Knee Mill

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800-759-7337

Inventory Number:
33791
Product Code:
VK4II
Brand:
Milltronics

Description

FEATURES

  • Milltronics 8200-B Series CNC Control
  • Program Conversationally or G-Code
  • 12" LCD Color Display
  • Solid Model Graphic Display
  • 1 GB RAM, 2 GB Program Storage
  • Retractable Handwheels with Feedback
  • 5.9" Manual Quill Travel
  • Programmable RPM Spindle
  • 7.5 HP Spindle Motor
  • High Torque 8:1 Back Gear
  • CAT #40 taper
  • ±90° Head Tilt
  • Ram Travel +/- 12” (from centerline)
  • Ram Swivels +/- 90 Degrees
  • Dovetail Way with Turcite X-axis
  • Hardened and Ground Way Y-axis
  • Unique MillSlideTM Z-axis
  • Auto Lubrication
  • DXF File Import
  • One Year Parts Warranty Quill Scale w/ CNC Feedback (option)
  • Power Drawbar (option)

SPECIFICATIONS

CAPACITY:

X axis travel                                                                        33" (840 mm)

Y axis travel                                                                        14.25" (362 mm)

Quill travel                                                                           5.9" (150 mm)

Knee travel                                                                          16.5" (420 mm)

MillslideTM travel                                                                  5.25” (133 mm)

Table size                                                                           54" x 12" (1370 mm x 305 mm)

Allowable table load                                                            1500 lbs. (680 kg)

T-Slot size                                                                           3 x .63" (16 mm)

 

SPINDLE:

Spindle nose to table min/max                                             6”/30” (152/762 mm)

Column to spindle center                                                     34.55” max/10.71” min (877.5 max /272 mm min)

Quill Diameter                                                                     4" (100 mm)

Spindle taper                                                                      ISO No. 40

Spindle speed (Low gear)                                                    70-500 RPM

Spindle speed (High gear)                                                   500-4000 RPM

AC spindle motor                                                                7.5 HP (5.5 kW)

Torque                                                                                200 ft lbs. (271 Nm)

 

MOTION:

X/Y, Z axis rapid traverse rate                                              300 IPM (7.62 m/min)

Max. cutting feed rate X,Y / Z                                              150/200 IPM (3.81 m/min)

Positioning accuracy                                                           0.0004" (+/- 0.010 mm)

Repeatability                                                                       0.0002" (0.005 mm)

Axis thrust force X/Y/Z (peak)                                              1,921 lbs. (8.5kN)

 

GENERAL:

Machine Height                                                                   100.79” (2560 mm)

Machine Width x Depth                                                        117.95” x 85” (2996 x 2160 mm)

Machine Weight                                                                   4400 lbs. (2000 kg)

Power required                                                                    11 KVA (29 amps)

Voltage required                                                                  208-240 Volts / 3 Phase

  

* BASE, COLUMN AND SADDLE:The base, column, and saddle are composed of Meehanite cast iron, which includes very high dampening characteristics. The one piece base casting and column are stress relieved to ensure machine geometry is maintained throughout the life. Spacing of the solid box ways ensure optimal support for the table and saddle in full travel of each axis. Heavily ribbed castings provide superior dampening for high speed machining and aggressive milling. The mating surface of the base and column are hand scraped to optimize fit and machine geometry. The 54"x12" machine table is fully ground and hardened. 

 

* WAY SURFACES:

The Y axis is hardened and ground square box ways with Turcite. The X-axis is dovetail. The ways are widely spaced to eliminate table pitch and deformation. The way surfaces on the Y and X axes utilize gibs with easy adjustment to maximize rigidity and maintain geometry throughout the life of the machine tool.

 

* MILLSLIDETM:

The unique MillSlide provides programmable Z axis travel by traversing the entire head up and down. This is not only more robust than competitors quill-driven solutions but it also allows for full manual functionality of the head and quill.  

 

* SPINDLE:

The oversized 4" quill comes standard with CT40. The quill has 5.9" of travel for manual operations. The spindle is belt driven using an inverter control AC spindle motor. The spindle rpm is fully programmable using the CNC control. A 8:1 manually shifted back gear allows for applications requiring high torque. Tools are secured in the spindle using a drawbar.  There is an optional power drawbar. The head is capable of tilting ±90 degrees for additional flexibility. An optional quill mounted scale allows feedback to the CNC to update tool length offsets.  Retention knobs are not required.

 

* BALL SCREWS AND AXIS DRIVES:

Each axis is driven using a high precision, fully ground ball screw. Axis ball screws are fully supported using angular contact thrust bearings and are perfectly centered between the way surfaces. The axis ball screws are belt driven with AC servo type drive motors.

 

* RAM:

   The heavy-duty Ram has +/- 11.5” (295 mm) travel and can be swiveled +/-90 degrees. This flexibility provides big-machine capacity at a modest price.

 

* LUBRICATION:

Automatic lubrication is provided to the way surfaces and ball screws with oil to eliminate wear. Way oil is delivered by metered valves, which precisely control the volume. A low oil-level alarm warns the user preventing possible damage to the way surfaces and ball screws.

 

* REMOVABLE TABLE CHIP GUARD (OPTION):

The table chip guard is conveniently designed to allow the operator to easily remove the guarding. This convenience offers the best solution to chip and coolant containment in normal working conditions, and when an oversized work piece needs machining the guarding is easily removed allowing oversized parts to hang over the table.

STANDARD FEATURES/OPTIONS

  • Milltronics 8200-B CNC
  • 12" Color LCD Display
  • Ethernet Connection
  • USB Port
  • Auxiliary Keyboard Jack (for optional Keyboard)
  • DXF File Import Software
  • User Definable Custom Macros
  • Feedrate and Spindle Speed Overrides
  • Spindle Load Meter
  • Edit Key Lock-out Switch
  • LCD Hour Meter
  • Tri-Color End of Cycle Light
  • Single Spare "M" Function with CNC Wait Channel
  • 7.5 HP (5.5 kW) Spindle Motor
  • Programmable RPM Spindle
  • ±90° Head Tilt
  • 5.9" Manual Quill Travel
  • 16.5” Knee Travel (Power Knee Optional)
  • Ram Travel +/-12” from Centerline
  • Dual Retractable Handwheels with Feedback
  • 8:1 Back Gear
  • CT40
  • One Piece MeehaniteTM Cast Iron Base
  • Fully Ground 54" x 12" Table
  • Fully Ground Box Ways on Y axis, Dovetail on X, MillSlideTM on Z
  • AC Servo Motors Belt Driven to Oversized Ball Screws on all Axes
  • 32 mm Ball Screw on X/Y, 25 mm Ball Screws on Z Axis
  • 400 IPM Rapid Traverse Rate
  • Matched AC Servo Amplifiers on all Axes
  • Automatic Metered Way Oil Lubrication
  • Programmable Flood Coolant and Drip Pan (Option)
  • Instruction Manual, Parts List, and Electrical Drawings
  • Operator and Maintenance Manuals