PL4/5i - Coborn Engineering

PL4/5i - PLANETARY LAPPING MACHINE FOR PCD and CVD

Designed to polish the top surface of PCD discs to a flat, mirror finish. They can also be used to polish CVD discs/wafers and PcBN.

PL4/5i

Coborn’s planetary lapping machines are designed to polish the top surface of PCD discs to a flat, mirror finish. They can also be used to polish CVD discs/wafers and PcBN. The machine consists of a number of independent work heads which hold the discs against a large, horizontally mounted planetary motion grinding wheel.

It is impossible to use flood cooling when polishing large areas of PCD as the discs ‘aqua-plane’ on the wheel surface. Therefore, the lapping is a dry process and the wheel is internally cooled using water from an associated water chiller.

Chilled water is also fed to the back of each disc. This maintains the disc at a uniform temperature to minimise disc dishing. The PL5i is equipped with 6 work heads as standard. Each arm is fitted with a double gimbal fixture to allow the disc to self-level. The disc holders are motor driven. The lapping pressure can be individually adjusted.

The lapping or polishing of the top surface of PCD or CVD components is desirable to produce a smooth surface for chip flow and a good cutting edge for geometric integrity. It also maximises edge life, enhancing the characteristics of PCD and also minimises surface deviations over a large PCD or CVD area.

The PL5i has a new user-friendly touchscreen control system providing more clarity on display status and more detailed diagnostics. New features include spindle load monitoring and the planetary wear indicator.



Features

PL5i
Machine dimensions (w x d x h):
790mm x 1,150mm x 1,625mm
Machine weight: 590kg
Main spindle motor: 12.0 kW
Chiller capacity: 7.5kW
Fixtures: 6 as standard
Wheel: Diameter 400mm, Face 105mm

  • Additional polishing fixture (arm)
    Applicable (PL4 Factory Fitted)
  • Grinding Wheels
    Available - size and grade on request

PL5 Brochure

Planetary lapping machine the PL5 brochure

PL Series Spec Sheet

Technical Specification for the PL5

PL-Series-Spec.pdf

PL5 Fixture Options

Optional Fixtures for PL5

PL5-FIXTURE-OPTIONS.pdf

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