Family of Turning Centers

June 29, 2010

Doosan’s Lynx 220, a family of five turning centers, has chucks ranging from 6.5 in. to 8.25 in., and each is equipped with a 20-HP spindle motor.

A 30-degree slant bed maintains a minimal and constant distance from tool tip to guideway and eliminates deformation under heavy loads.  The design also enhances chip flow while allowing easy access for loading and unloading material, replacing chucks and tool, and repositioning the optional tailstock. 

The headstock is mounted on the same plane as the optional tailstock, providing constant alignment and center height, regardless of bed temperature.  The spindle is supported by double-row cylindrical roller bearings with large contact surfaces for high precision during heavy loads, the company states.  Spindle speeds are from 4,000 to 6,000 RPM depending on the model selected.

The 12-station turret is nonstop and bidirectional, with a 0.15-second next-station index time.  A dedicated 5-HP rotating tool motor engages the rotating tools in 0.5 second and generates up to 6,000 RPM.  Holders are prelubed for 1,000 hours of operation, and polar coordinate interpolation is provided for simplified C-axis contouring.

Automatic force lubrication is provided to all guideways, ball screws, and the tailstock quill.  A low-level alarm prevents restarting until the oil reservoir is replenished. 

For more information, visit www.doosan.com.