Centerless Grinding Machines | NISSIN MACHINE WORKS, LTD.

Element Technology of Machine Tool

• Bearings：

  Hydrostatic Bearings or Rolling Bearings is selected and used depending on the major purpose of the machine.  Main models are using Hydrostatic Bearings suited for high precision grinding.

  • ■ HYDROSTATIC BEARINGS
  • 1) High oil film stiffness independent on the number of rotation.
    Datum Surface of centerless grinding, rotational accuracy of Regulating Wheel is improved.
  • 2) Thick oil film supports the spindle and gives averaging effect of parts.
  • 3) Thick oil film gives high dumping and reduces vibration.
  • 4) No metal to metal contact design keeps spindle accuracy for a long time.
  

• Stationary Spindle：

  To get accuracy, one rank higher than before, new models with stationary spindle are developed.

  • ■ STATIONARY SPINDLE
  • 1) Wheel drive is direct and spindle length is short.
    Machine width can be designed small.
  • 2) Wheel spindle works as a part of wheel housing and increases machine stiffness.
  • 3) As wheel spindle is stationary and wheel sleeve rotates alone, the mass of rotation is small and gives higher dynamic stiffness.
  • 4) Wheel support bearing is located inside of the wheel sleeve. When spindle is fixed to the machine, the bearing will not be deformed by it. The bearing gives original high rotating accuracy.
  

Work Handling System

Own design handling system and various types of robot system moved by pneumatic, hydraulic and CNC are available.
From conventional speed loader to high speed loader with 2 sec load and unload time, best suited system can be selected.

Control and Gauging System

Machine control is performed using pneumatic, hydraulic or CNC system.
Work measuring system by contact type, pneumatic type and laser type are available.

Grinding Technology

Grinding and precision Truing Technology are developed on conventional grinding wheel, CBN Wheel and DMD Wheel.
NISSSIN has extensive experience in grinding applications for steels, aluminum, plastics and ceramic components with various profile.