TONGTAI VU SERIES – 3-5 AXIS ROTARY ULTRASONIC ASSISTED MACHINING CENTERS
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The Tongtai VU-5 is a 3-axis (5-axis with trunnion table) dual-function vertical machining center that offers rotary ultrasonic assisted machining capability. Rotary ultrasonic machining combines high speed spindle rotation with high frequency vertical vibration of the cutting tool. The diamond tool impacts the material with high contact speed, reducing cutting force and producing ultra-fine finishes three to five times faster than conventional machining. Typical applications include microhole drilling and machining of any material that is softer than the cutting tool, including glass, sapphire, silicon carbide, quartz, ceramic, hardened steel, high nickel alloys, and non-ferrous materials.
The compact, fixed column/moving table style of the Tongtai VU-5 features roller type linear slideways and a Meehanite cast iron frame for fast, precise movement and high rigidity. X, Y, and Z axis travels are 20″ x 15.7″ x 13.8″ (508 mm x 398 mm x 350 mm) respectively. Class 3, double-nut pre-loaded 25mm (1″) diameter ballscrews permit a standard rapid traverse rate of 1,890 inches/minute (48 m/min) in all axes with acceleration of 1.2 G. An APS (Absolute Pulse Coder) servo system does not require zero return; the machine can be started from any position. A standard bed flushing system provides efficient chip removal.
A high-speed 30-tool arm-type automatic tool changer provides 0.8 sec. tool changes and 1.3 sec. chip to chip times. The 3 hp, 24,000 rpm direct drive spindle employs a dual contact Big Plus 30 taper (BBT-30) toolholding system. Through-spindle coolant capability is standard, as is a spindle chiller.
Automatic frequency search and lock via M-codes is standard for ultrasonic operation. Auto tuning range is from 15-45 kHz and amplitude range is 1 – 10 microns.
The 3-axis Tongtai VU-5 machine is equipped with Siemens 828D control with 10.4″ TFT and ShopMill software with an Advanced Surface package. The 5-axis version has a Siemens 840D control with 15″ monitor, the Sinumerik Mdynamics Techology Package for 5-axis milling, and ShopMill.
Travels
Longitudinal X-Axis Travel 20″
Cross Y-Axis Travel 15.7″
Vertical Z-Axis Travel 13.8″
Table to Spindle 7.01″ min / 20.79″ max
Spindle Center to Column 16.3″
Table
Table Working Surface 23.6″ x 15.7″
Max. Workload on Table 550 lbs.
Table Surface Ground / T-slotted
No. of T-slots x Width 3 x 18 mm
Table Height from Floor 33.5″
Spindle
Spindle Motor 3 HP
Spindle Taper BBT-30 Dual Contact
Spindle Drive System Direct Drive
Spindle Speed 0 – 24,000 RPM
Automatic Tool Changer – Arm Type
Number of Tools 30 Tools (+1 in the spindle)
Tool Selection Bi-directional Random
Tool Change Time .8 sec. Tool to Tool
Chip to Chip Time 1.3 sec. Chip to Chip
Max. Tool Diameter 2.67″ with Adjacent Tools
Max. Tool Weight 6.6 lbs.
Tool Type BT-30
Max. Tool Length 7.9″
Ballscrews and Axis Motors
X-Y-Z Ballscrew Diameter 25 mm (1″) x 16 mm Pitch
Ballscrew Type Class 3 Double Nut Pre-loaded
Ballscrew Mounting Type Double Anchored
X-Y-Z Servo Motor HP 2.4-2.4-2.4 HP
Servo Motor Mounting Direct Coupled
Ultrasonic
Max. Power Level 1 kW (1.3 HP)
Static Run Out 3 µ
Dynamic Run Out 10 µ
Ultrasonic Controller Independent from CNC Control
Frequency Range 18 – 40 kHz (depends on tool design)
Amplitude Range 1 – 10 µ (depends on tool design)
Auto Tuning Range 15 – 45 kHz
Adjustment for Frequency Mode/Power Level M-codes for Automatic/Manual 10% – 100%
Collet Size ER-11/Customized
5 Axis Trunnion Table
Manufacturer Lehmann T1-507510.LL
Drive System Pre-loaded Gear Drive, Backlash Free
A-Axis (tilt) Rotation Speed 60 RPM
C-Axis (rotary) Rotation Speed 111 RPM
Positioning Accuracy A-Axis 24 Arc Seconds
Positioning Accuracy C-Axis 20 Arc Seconds
Repeatability A-Axis C-Axis 2 Arc Seconds
Siemens Motor Sizes for A and C BLS072ERN
90° Cycle Time A-Axis 0.41 Seconds
90° Cycle Time C-Axis 0.26 Seconds
180° Cycle Time A-Axis 0.66 Seconds
180° Cycle Time C-Axis 0.39 Seconds
Travel of A-Axis +95° / -5°
Travel of C-Axis +360° / -360°
Feeds
Rapid Traverse Rate X, Y, Z 1,890 IPM
Acceleration 1.2 G
Cutting Feed Rate 0.01 – 787 IPM
Positioning Accuracy ± .0003″ Full Stroke
Repeatability ± .0002″
General
Coolant Tank Capacity 30 Gallons
Machine Weight 6,270 lbs.
Floor Space 91″ x 78″ x 108″
Machine Power Source* 208/220 Volts, 3 Phase 40 Amps
Air Source 90 PSI
STANDARD ACCESSORIES
Flood Coolant System with washdown hose
Air Blast for Spindle
LHL Lube USA auto grease lubrication system – Eco friendly – no waste oil
Full Machine Enclosure
Halogen Work Lamp
Chip flushing system from top
Preparation for Coolant Through the Spindle (pump system not included)
Rigid Tapping
3 color operation light
Spindle Cooler
Vacuum Generators (for part clamping via vacuum)
Freeze Drier (for vacuum pump)
Oil Mist Collector
Ultrasonic Control VC2100
Ultrasonic Tool Holders x 3 sets
Renishaw NC-4 laser tool setter
X/Y axis ballscrew protection covers
X/Y/Z axis special telescopic way cover
OPTIONAL ACCESSORIES
Siemens 840D 5 axis simultaneous control**
Lehmann high precision tilt / rotary table T1-507510.LL with motors, drives, cables, and 4” riser**
Additional Ultrasonic Tool Holders
XYZ axis linear scales**
Centrifugal separator (coolant filter)**
Renishaw OMP-40 part probe for 2-D surfaces (hardware only kit)
Renishaw OMP-40 part probe installed with 2 days training**
Renishaw OMP-400 part probe for 3-D surfaces (hardware only kit)
Renishaw OMP-400 part probe installed with 2 days training
440 / 460 / 480 Volt operation
High pressure coolant thru spindle 300 PSI
High pressure coolant thru spindle 1000 PSI**
Automatic power off
Column riser block 4” or 6”
Column riser block 8”, 10”, or 12”
Automatic doors
Additional 8 sets of M codes for fixture interfacing
Additional HYD unit and plumbing to supply fixture hydraulics
Caterpillar type chip conveyor
Additional 2MB user memory in NCU (up to 3 sets or total extra 6MB available)
PCU50.5P
Siemens MPG
Spare digital I/O 16 in / 16 out
**Recommended Options
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