Product Information

High Precision Machining Center UVM-450C(V2)


UVM-450C(V2) has been developed with the concept of high speed and high quality machining, providing High Precision Aerostatic Bearing Spindle. This is a high precision machine and one of application targets is a precision mold.

This machine helps ensuring reduction in the running costs and a significant improvement of the machining quality when compared with the conventional machines.
The following specific effects can be expected:

  1. 60,000 min-1 spindle installed as standard
     => Reduction in the machining time
  2. Virtually unlimited life of the spindle by using non-contact air bearings
    If the spindle is damaged by any chance, the repair costs are much less than the spindles of other machines.
     => Reduction in the maintenance costs
  3. Enhancing tool life by achieving high rotational accuracy of the spindle
    In addition, there is no restriction on time for running the spindle at high speed, and machining can be performed with only small-diameter tools.
     => Reduction in the tool costs
     => Reduction in the types of tools used
     => Reduction in man-hours for CAM operation
  4. Significant improvement of machined surface quality
     => Reduction in man-hours for polishing
  5. Significant improvement of machining accuracy
     => Realization of high-valued added machining
  6. Realization of various machining operations by only the machine with a variety of optional accessories such as a rotary table
     => Realization of various types of functions with the machine itself

High speed aerostatic bearing spindle

High speed aerostatic bearing spindle

Spindle speed: 60000 min-1
SPAM(*): 0.10 μm
TIR: 1 μm

(*) Measured with the method of Single Point Asynchronous Error Motion

1. High speed and low heat generation

High speed and low heat generation
  • Improvement of machining time
  • Reducing in the types of tools and the processes (small diameter tool use)
  • Low spindle thermal displacement (See the figure at right)

2. High rotational accuracy

High rotational accuracy
  • Realization of high quality machined surface
  • Enhanced tool life

3. Virtually unlimited life of bearings

  • Availability of high speed, continuous machining
  • Reduction in the maintenance cost

4. Low level vibration and noise

  • Realization high quality machined surface
  • Improvement of the working environment

Comparison of the spindle functions

ItemBall/roller bearing spindleAerostatic bearing spindle
Bearing life2000∼3000 hourVirtually unlimited
Continuous running timeWithin a few hoursVirtually unlimited
Drive motorSeveral 10 kW1.6 kW
(Extremely consumed by generation of heat, noise, vibration)
Tool lifeShorter (Due to the low rotational accuracy)Longer (Due to the high rotational accuracy)
Spindle exchanging time
required and the cost
2∼7 days Expensive2∼3 hours Cheaper

Linear motor drive

High precision contouring

High precision contouring

High quality surface machined with high speed feedrate is realized, providing linear motor driving system for X, Y and Z axis.

  1. High quality and smooth machining around quadrant switching area realized, due to minimized lost motion.
  2. High quality flat surface realized, due to eliminating factors, for instance, influenced by a ball screw driving system.

High precision positioning and smooth feed

High precision positioning and smooth feed

Reliable step feed 0.1 μm realized, providing 0.01 μm of programming resolution for X, Y and Z of linear 3 axes

Efficient cooling system

Minimized thermal deformation

Minimized thermal deformation

Casting pipes in the machine body is TOSHIBA MACHINE's own development.

Variety of applications

(1) High speed spindle

High speed spindle

Replacing the standard spindle

(2) Vertical rotary and indexing table (C1 axis)

Vertical rotary and indexing table (C1 axis)


  • Crossed groove machining
  • Turning
  • Fresnel lens machining

(3) Horizontal rotary and indexing table for work piece (A2 axis)

Horizontal rotary and indexing table for work piece (A2 axis)


  • Lens mold machining
  • Turning

(4) Tool swiveling and indexing head (A axis)

Tool swiveling and indexing head (A axis)


  • Groove machining
  • Groove machining with gradually changing angle
  • Automatic tool changing (turret)

(5) Tool twisting head (C2axis)

Tool twisting head (C2axis)


  • Curved groove machining
  • Fine groove machining
    (e.g., analytical chip)

(6) High speed micro-pattern machining system

High speed micro-pattern machining system

Tools are moved at high speed by the piezo-oscillator stage. Micro-patters are machined in a short time.

Automatic tool changer

Automatic tool changer to support efficiently a long hour operation

Automatic tool changer
(1) Tool direct chucking system
(2) Shank size of tools:

Either one of φ4mm and φ6mm

(3) Tool storage capacity: 16 tools