Overview of Machine Series

The document details a comprehensive range of CNC machining and turning centers by Yeong Chin Machinery Industries Co., Ltd., covering vertical and horizontal machining centers, mill/turn centers, geo turning centers, and CNC lathes. These machines serve industries such as aerospace, automotive, power generation, shipbuilding, construction, and oil/gas, offering solutions for general, heavy-duty, and complex multi-axis machining.

Vertical and Horizontal Machining Centers

Vertical machining centers range from high-efficiency T-base models to ultra-high performance 5-axis machines, emphasizing rigidity, precision, and intelligent automation. Horizontal machining centers (N H series) focus on high-speed, high-precision machining for demanding applications.

Turning Centers

The GT series features rigid boxway turning centers optimized for hard material machining with chucks from 6" to 12" and robust Meehanite® cast iron construction. The TC series offers 2-axis turning centers with chuck sizes from 6" to 24", designed for general to heavy-duty machining with slanted beds and powerful geared-head spindles. NT and NTC models provide configurable options including Y-axis, sub-spindle, and C-axis for complex single-setup machining.

Structural and Thermal Design

All machines utilize Meehanite® cast iron for high rigidity and thermal stability. The GT series incorporates symmetrical headstock design and spindle compartment ventilation to minimize thermal growth. Isolated coolant tanks and efficient hydraulic systems further reduce thermal deformation and maintain machining accuracy.

Spindle Performance

Spindles use CM cartridge-type designs with dual-roller bearings for stiffness and durability. Power and torque vary by model, with spindle speeds up to 6,000 rpm and torque ratings up to 510 kgf-m (3,688.9 lb-ft). Spindles are assembled in temperature-controlled environments to ensure quality.

Tooling and Turret Systems

Turrets are servo-driven with hydraulic clamping, featuring fast tool indexing (as low as 0.9 seconds) and large curvic couplings for high stiffness. Tool post standards include VDI 30/40, DIN69880, and DIN1809. Live tool motors range from 3.6 kW to 7.5 kW with torque up to 5.5 kgf-m. Tool holders support milling, drilling, boring, and tapping with maximum tool diameters up to 20 mm at speeds up to 5,000 rpm.

Key Specifications and Performance Parameters

• Chuck sizes: 6" to 24" depending on model
• Spindle speeds: up to 6,000 rpm
• Spindle power: approx. 1.1 kW to over 25 kW
• Torque: up to 510 kgf-m (3,688.9 lb-ft)
• Machine bed: slanted boxway design for rigidity
• Thermal management: ventilation, isolated coolant tanks, hydraulic systems

Applications and Industry Suitability

Machines are suitable for machining hard materials, heavy-duty tasks, and complex multi-axis operations, serving automotive, aerospace, medical, power generation, shipbuilding, construction, and oil/gas sectors.

Spindle and Chuck Details

• Chuck sizes from 6" to 24" with through-hole diameters 52 mm to 182 mm
• Large-diameter spindle bearings (up to 180 mm) for rigidity
• Spindle speeds vary by model: up to 4,000 rpm (TC-26), 2,500 rpm (TC-36), 2,000 rpm (TC-46)
• Torque up to 380 Nm (2,749 lb-ft) for TC-46 series
• Spindle motors from 15 kW to 50 HP with continuous and peak ratings

Structural Design and Rigidity

• One-piece Meehanite® cast iron bases for rigidity and thermal stability
• Hardened, ground box ways with Turcite-B coating reduce friction and vibration
• Separate coolant tanks and oil-cooling spindle systems minimize thermal deformation

Tailstock Features

• Fully programmable tailstock via M-code, with manual, hydraulic, or servo quill options
• Provides rigid support for long workpieces to enhance machining precision

Turret Systems

• Servo-driven turrets with 10 or 12 stations, including BMT 85 live tooling turrets
• Large 3-piece curvic couplings for high clamp force and accuracy
• Fast tool indexing times (~0.9 seconds) improve productivity

Machining Capabilities and Efficiency

• Multi-axis integration (X, Y, Z, C axes) with live tooling enables complex operations in one setup
• Sub-spindle with 6" chuck and Y-axis for complete part machining, reducing handling
• High-speed and high-torque options with geared heads up to 1,400 lb-ft torque and 6,000 rpm spindle speeds

Cooling and Chip Disposal

• 45-degree slanted bed and chip conveyors optimize chip evacuation
• Oil circulation spindle cooling maintains thermal stability

Performance Data and Diagrams

Power and torque charts illustrate spindle performance across speed ranges and gear shifts for TC-26, TC-36, TC-46, and TC-46M models, with detailed numeric values for continuous and 30-minute ratings.

Critical Parameters and Recommendations

• Use Meehanite® cast iron and Turcite-B coatings to maintain rigidity and accuracy
• Match chuck size and spindle speed to workpiece and machining needs
• Programmable tailstock and servo turrets enhance flexibility and precision
• Proper coolant and chip management critical for thermal stability and efficiency

Tool Holders and Cutting Tools

Specifications cover O.D. and face cutting tool holders compatible with BMT85, ER50/ERA50, and DIN1809 standards. Tool holders support milling, boring bars, drills, rotary tools, and cut-off tools with sizes up to 20 mm diameter at 5,000 rpm. Collets (ER25, ER32, ER50) and various tool holders are detailed for precise machining.

Machine Dimensions and Installation

Detailed dimensions for models GT-200B/MA through TC-46 series include overall size, installation space, chip conveyor placement, electrical cabinet, coolant tanks, and door clearances. Proper installation space ensures accessibility and maintenance ease.

Machine Specifications Summary

• Machining capacity: swing over bed 320–850 mm, max turning length 570–3,200 mm
• Spindle: chuck sizes 6"–24", spindle speeds 1,200–6,000 rpm, max torque up to 510 kgf-m
• Motors: main spindle 11–40 HP, axial motors 1.8–9.4 HP, turret motors 1.2–6.44 HP, live tool motors up to 30 HP
• Travel: X-axis 150–415 mm, Z-axis 500–3,200 mm, rapid feed up to 30 m/min
• Turret: servo-driven hydraulic clamp, 8–12 stations, tool shank sizes 20–32 mm
• Tailstock: quill diameter 75–150 mm, taper MT-4 or MT-5, travel up to 3,000+ mm
• Hydraulic system: pressure 45–70 kgf/cm², flow 21–38.5 L/min
• Coolant system: tank capacity 139–1,060 L, pump power 0.59–2.02 HP
• Machine weight: approx. 3,700–15,500 kg

Additional Equipment and Options

• Refrigerated heat exchangers, automatic parts catchers, oil skimmers, 20 bar pumps
• Chip conveyors (right side standard, rear optional), air and coolant guns
• Electrical cabinet cooling: heat exchangers standard, A/C coolers optional
• Auxiliary systems: air blast, automatic lubrication, hydraulic systems, oil mist collectors
• Peripherals: oil skimmers, RENISHAW HPMA tool length measurement, bar feeders, parts catchers
• Safety: safety clutches on axes, manual and hydraulic steady rests, full chip enclosures
• CNC Controls: FANUC TXP-100FA, TXP-200FA, and TXP-200FB depending on model

Critical Notes and Best Practices

• Adhere to tooling size and standard specifications for optimal performance
• Observe spindle speed and torque limits for continuous and short-term operation
• Ensure installation space accommodates maintenance and safety requirements
• Use hydraulic clamping properly to maintain precision and repeatability
• Consult manufacturer for updates as specifications may change without notice

Conclusion

This document serves as a detailed technical reference for selecting, installing, and operating Yeong Chin CNC machining and turning centers. It emphasizes robust structural design, powerful spindle and turret systems, flexible tooling options, and integrated multi-axis machining capabilities to support high-precision, efficient, and heavy-duty manufacturing across diverse industries.