Twin Spindle Live Tooling Lathe

The Twin Spindle Live Tooling Lathe combines a main spindle, sub-spindle, CNC turret, and driven tooling for turning and secondary machining operations.

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Product Introduction

The Twin Spindle Live Tooling Lathe combines a main spindle, sub-spindle, CNC turret, and driven tooling for turning and secondary machining operations.

The main spindle handles the first machining stage. The sub-spindle takes over the workpiece for rear-side machining, while live tooling performs drilling, tapping, slotting, and milling. This setup enables complete component processing in a single production route, eliminating manual re-chucking and extra machine transfers.

Technical Specifications

Specification	Standard Parameter Range
Machine Type	Twin Spindle Live Tooling CNC Lathe
CNC Control	FANUC / Siemens / Mitsubishi
Main / Sub-Spindle Speed	Up to 4,000–6,000 rpm
Main / Sub-Spindle Motor	11 / 15 kW (Model Dependent)
Max. Turning Diameter	320 mm
Max. Turning Length	500 mm
Max. Bar Capacity	51 mm / 65 mm
Turret Type & Tool Stations	12-Station Servo Turret (All Live Tool Capable)
Live Tool Speed / Motor	4,000–6,000 rpm / 3.7 kW
X / Z / Y Axis Travel	X: 200 mm \| Z: 550 mm \| Y: ±40 mm
C-Axis Resolution	0.001° (Main & Sub-Spindle)
Rapid Traverse Rates	24 / 30 m/min
Automation Options	Bar Feeder Interface, Parts Catcher, Chip Conveyor

Why Use a Twin Spindle Live Tooling Lathe?

Single-Setup Production: Complete turning, drilling, tapping, and milling in one unified production route.
Elimination of Human Error: Automated transfer removes manual re-clamping variation and improves batch consistency.
Floor Space & Labor Efficiency: One machine replaces separate turning and milling stations, lowering labor and energy consumption per unit.
Seamless Automation Integration: Standardized interfaces make pairing with bar feeders, gantry cranes, or articulated robots quick and straightforward.

Suitable Parts and Application Industries

Automotive & Drive Systems: Transmission shafts, drive pins, sensor housings, fuel rail connectors, and splined hubs.
Fluid Power & Hydraulics: Valve spools, hydraulic fittings, manifold adapters, pneumatic sleeves, and connectors.
Medical & Precision Technology: Bone screws, instrument bodies, connectors, and specialized fittings requiring high surface finish.
General Industrial Machinery: Stepped shafts, custom bushings, flanged couplings, and motor shafts.

Machine Configuration

The machine configuration is selected according to component geometry and production goals:
Spindle System: Main spindle for primary turning, synchronized sub-spindle for rear-side operations, full C-axis positioning, and hydraulic chuck or collet workholding.
Turret & Tooling: Multi-station CNC turret supporting static turning tools and live tooling positions. Optional Y-axis for off-center milling applications.
CNC & Automation: FANUC, Siemens, or Mitsubishi CNC controls; optional bar feeder, parts catcher, chip conveyor, gantry loader, or robotic loading interface.

Twin Spindle System

The main and sub-spindles divide the machining process between both ends of the workpiece:
Main Spindle: Performs initial OD turning, ID boring, facing, grooving, and threading.
Sub-Spindle: Grips the workpiece during programmed cutoff to execute rear-side turning, facing, boring, and secondary milling.
Workpiece Transfer: Fully automated via C-axis phase synchronization, ensuring precision alignment between front and rear features.

Machine Comparison: Standard CNC Lathe vs. Twin Spindle System

Production Feature	Standard CNC Lathe	Twin Spindle Live Tooling Lathe
Front Turning / Boring	Fully Capable	Fully Capable
Rear-Side Machining	Requires 2nd Setup / Operator	Automated Sub-Spindle Transfer
Drilling / Milling / Tapping	Requires Secondary Milling Unit	Integrated Live Tooling
Off-Center Features	N/A	Available via Y-Axis Option
Bar-Fed Continuous Run	Semi-Automated	Fully Automated Front-to-Back

Engineering Input Requirements

To evaluate your process and provide a formal machine recommendation, please supply:
Part 2D/3D engineering drawings (STEP, IGES, PDF)
Raw material grade and blank stock dimensions
Annual volume targets and target cycle time
Critical tolerances and surface finish specs

FAQ

Q: How does the main-to-sub spindle transfer maintain accuracy?

A: The CNC control synchronizes both spindle speeds and angular C-axis positions before closing the sub-spindle chuck. This eliminates stopping time and guarantees tight concentricity and axial alignment.

Q: Can live tooling fully replace a dedicated vertical machining center?

A: It effectively replaces secondary drilling, tapping, and light-to-medium milling on turned parts. Heavy, wide-area block milling remains better suited for dedicated machining centers.

Q: What is the advantage of a BMT turret over a VDI turret?

A: BMT (Base Mounted Tooling) turrets feature a rigid 4-bolt connection directly to the turret disk, offering higher torsional rigidity, superior heavy-cutting stability, and better radial precision than key-located VDI systems.

Q: Is the machine suitable for unattended or "lights-out" manufacturing?

A: Yes. Equipped with an automatic bar feeder, sub-spindle part transfer, parts catcher, and chip conveyor, the system can run continuously with minimal operator intervention.

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