High-Rigidity Mechanical Structure
The bilateral gate structure in SIRIUS-2500 is the ideal design for distributing the vibration, the weight, and the heat throughout the entire frame. The machine is built through the finite element analysis to minimize the frame distortion which may be caused by machining condition or environment. The box way design for all axes is perfect for vibration absorption during heavy duty machining, and the Hwacheon-developed air levitation system on Y-axis keeps the workpiece stable while cutting a heavy-load subject. The distance between the spindle and the body is designed short, so the machine stays stable after a prolonged operation.
The spindle integrates the motor to limit vibration, noise, and power loss at high speed rotation. The jet of oil is injected directly onto the spindle bearing for effective cooling, and the motor and the spindle assembly are jacket-cooled to limit the displacement caused by heat. To achieve greater precision, the spindle constantly monitors for possible thermal displacement and makes necessary adjustment in real time.
High-precision feed drive
The frictional feed surface of the X and Z axes is coated with fluorinated resin and hand-scraped to precision with expert craftsmanship that boasts a tradition of 60 years to minimize friction on the slide surface. The roller linear guide on the X-axis enables stable and smooth feeding of large and heavy workpieces. Also, the servo motor is coupled directly to the drive and the ball screws are tensile preloaded, so that the heat generated from the ball screws does not cause the deformation and affect machining precision.