Abrasive rotor for finishing workpiece - has circumferentially spaced ducts receiving abrasive near centre, producing jet at peripheral outlets

摘要

The mechanism is used for finishing a workpiece by means of abrasive material. It uses a rotor (10) with a number of circumferentially spaced passageways (11) each having an inlet (12) and an outlet (13). During rotation of the rotor, the abrasive mixture is fed to the inlets by a stationary supply tube (17) and leaves through the outlets in the form of a jet due to centrifugal force. Each passageway may have a slot or opening near its outlet through which air enters the flow of abrasive mixture. The passageways may be curved in planes through the rotor axis (16).