Machine tool characteristics

1. This machine tool is manufactured using high-grade Meehanite cast iron and a box‑type structural design. After appropriate annealing to relieve internal stresses, the material exhibits exceptional toughness. Combined with the box‑type structure and a highly rigid body, the machine delivers ample rigidity and strength, enabling robust heavy‑cutting performance and outstanding repeatability of machining accuracy. The crossbeam features a stepped lifting system with an ergonomically optimized operating interface, maximizing its heavy‑cutting capabilities. The crossbeam’s clamping and releasing mechanism employs hydraulic release and hydraulic clamping.
2. The base adopts a box‑type structure with thick ribbed walls and multi‑layer ribbing, minimizing thermal deformation and enabling it to withstand both static and dynamic torsional and deformation stresses, thereby ensuring high bed rigidity and excellent stability. The columns feature a special symmetrical box‑type design, providing robust support for the slide table during heavy cutting operations—perfectly embodying superior rigidity and precision. The general specifications for machine tools comply with JIS/VDI 3441 standards.
3. The Z-axis square guide rails feature an extra-large cross-section (220×220 mm) to enhance cutting performance and ensure high roundness. The slide column is made of alloy steel and undergoes annealing treatment.
4. High-precision, high-rigidity spindle head; this machine is equipped with a FANUC high-power spindle servo motor (with a power rating of 60/75 kW).
5. The spindle bearings are either the U.S.-made TIMKEN CROSS ROLLER bearings or the European PSL cross-roller bearings, featuring a large inner diameter of φ685 mm to deliver exceptional axial and radial load capacity. These bearings ensure reliable performance during prolonged heavy‑duty cutting operations, offering outstanding precision, stability, low friction, excellent heat dissipation, and robust spindle support—making them ideal for machining large workpieces and asymmetrical components.
6. Transmission Characteristics:

• 1) No noise and no heat transfer to the spindle.
• 2) Vibration-free transmission to the spindle ensures cutting quality.
• 3) The gearbox and the spindle utilize a separate lubrication system.
• 4) High transmission efficiency (exceeding 95%).
• 5) Gear shifting is controlled by a gear selector fork, ensuring stable gear changes.

7. Characteristics of crossed roller bearings:

• 1) Double-row crossed roller bearings occupy the same space as single-row roller bearings, yet their load application points are not reduced.
• 2) Takes up little space, with a low bed frame height for easy operation.
• 3) The center of gravity is low, resulting in reduced centrifugal force.
• 4) A Teflon bearing retainer is used, resulting in low inertia and enabling operation even at low torque.
• 5) Uniform heat conduction, low wear, and long service life.
• 6) High rigidity, high precision, vibration resistance, and easy lubrication.

8. The X and Z axes employ FANUC AC servo motors coupled directly to large-diameter ball screws (C3‑grade accuracy, preloaded to eliminate thermal expansion and enhance rigidity), eliminating cumulative errors associated with belt drives and delivering exceptional repeatability and positioning accuracy. The support bearings are high‑precision angular contact ball bearings.
9. ATC Tool Magazine: Equipped with an automatic tool‑changing mechanism, the magazine holds 16 tools. The tool holder features a 7/24 taper and BT‑50 interface; each tool can weigh up to 50 kg, and the magazine’s maximum load capacity is 800 kg. An integrated coolant system ensures effective cooling, extending tool life and reducing machining costs.
10. Electrical Cabinet: The electrical cabinet is equipped with an air conditioner, effectively reducing the internal ambient temperature and ensuring system stability. The external wiring section features protective corrugated tubing that is resistant to heat, oil, and water.
11. Lubrication System: This machine features an automatic pressure‑relief lubrication system with centralized oil supply, employing an advanced pressure‑relief intermittent lubrication mechanism. It delivers oil to each lubrication point at predetermined intervals, in specified quantities, and under controlled pressure, ensuring timely and adequate lubrication for every location and enabling the equipment to operate reliably over extended periods.
12. The X and Z axes feature a symmetrical box-type structure with hardened guideways; after heat treatment, wear-resistant strips (Turcite‑B) are bonded to the sliding surfaces, forming a high‑precision, low‑friction precision slide assembly.

Machine Tool Technical Parameters