Product Information

High-precision Grooving Lathe ULR Series

Features

This is a horizontal turning lathe that is used for precise grooving on the roll for optical sheet molding.
The following features are equipped to obtain high-precision machine movement and machining accuracy.

High-precision machine movement and machining accuracy

  • By using linear motors for X and Z axes, servo stiffness is increased, and irregular feeding and quadrant projections are decreased to enable smooth feeding.
  • X and Z guide ways are the roller guide way where selected rollers are aligned on the high-precision lapped V-V surface.
    This therefore achieves smooth and high-precision movement and high stiffness.
  • The spindle motor integrates the synchronized built-in servo motor and uses high-precision encoder. Therefore, when the spindle is used as the indexing axis (C-axis), mechanical play is eliminated and high-precision indexing and positioning are possible.

High-precision hydrostatic bearing (spindle, C-axis)

High-precision hydrostatic bearing (spindle, C-axis)

Hydrostatic bearings are applied for the spindle to support the roll, and high rotational accuracy can be obtained. 
Also, the high-precision temperature controller controls the temperature of hydrostatic oil to make the bearing stable.

High-precision air-hydrostatic bearing (B-axis)

High-precision air-hydrostatic bearing (B-axis)

The slewing bearing on the tool rest uses the synchronized built-in servo motor and high-precision encoder in the same way as the high-speed rotating air bearing and the spindle in order to ensure high-precision positioning.
 

Less affected structure by thermal deformation caused by environment change and heat generated by the drive system

Less affected structure by thermal deformation caused by environment change and heat generated by the drive system

By circulating temperature-controlled coolant through the bed, saddle, table, spindle, and B-axis, the structure is less affected by external condition and heat of the drive system.