MANUFACTURE OF ROTARY TYPE TRUING OR DRESSING TOOL FOR GRINDING WHEEL

摘要

A mould 13 which may be of graphite, ceramic material, or metal is formed with an internal surface 14 accurately machined to the required shape of the surface of the rotary dresser which is being formed. Diamond particles 15 are then adhered to the surface 14 by any suitable adhesive. A metal surfacing powder is then applied to build up a metal layer 16 by means of an arc plasma spray surfacing gun 20 to melt the powder particles and a high velocity gas flow to propel the particles onto the diamond coated layer. A layer of a low melting point dimensionally stable alloy may be cast on top of metal layer 16 onto the internal bore. The mould 13 is then removed and the external surface accurately ground to final form. A supporting steel core may be added.