The four-guide rail heavy-duty lathe

The four-guide rail heavy-duty lathe is a core heavy-load machining equipment in the high-end equipment manufacturing industry, featuring ultra-rigid support through its four-guide rail structure, making it irreplaceable in the field of heavy-duty component machining.

The four-guide rail heavy-duty lathe is a core heavy-load machining equipment in the high-end equipment manufacturing industry

Core Structural Features

The machine adopts a symmetrical four-guide rail layout, featuring a compound configuration of dual V-shaped combined guide rails and flat guide rails, achieving balanced bidirectional load distribution on the worktable. 

The split structure allows the tool post and tailstock to move horizontally, with the tool post capable of spanning over the center rest and tailstock, marking its core difference from conventional double-guide rail machine tools.

The spindle integrates a hydraulically preloaded hydrostatic bearing, achieving a radial runout of ≤0.003mm at 3000r/min. 

The tool post is driven by a linear motor, maintaining a positioning accuracy of ±0.005mm even at a feed rate of 30m/min.

Most machine models feature static pressure guideways for the X/Z axes, eliminating mechanical wear, ensuring high static and dynamic stiffness, and preventing vibration interference during heavy-load cutting, delivering excellent long-term precision retention.

Processing Capabilities and Application Fields

It can counteract up to 20 tons of cutting force, suppress machining vibrations, and compensate for thermal deformation in real-time through a closed-loop system, with roundness errors controlled within 0.01mm.

It is widely used in fields such as wind power, shipbuilding, and energy equipment, capable of achieving high-precision machining of components like 8MW wind turbine main shaft flanges, large ship crankshaft connecting rods, 

and nuclear reactor pressure vessel sealing surfaces, with surface roughness reaching Ra0.8μmThe mainstream models can achieve a maximum machining diameter of 1600-4000mm, with a maximum spindle load capacity of up to 500 tons, suitable for rough and finish machining of various large-scale rotary components such as shafts, disks, and rollers.