Patent ID: 6991520
Filing Date: 2006-01-31
Classification: B24B

Abstract:
1. An abrasive machine, comprising: a pressure vessel having a lid which opens or closes said pressure vessel, said pressure vessel being capable of increasing and reducing inner pressure; an abrasive plate being provided in said pressure vessel; a pressing plate being provided on said abrasive plate, said pressing plate pressing a work piece, which has been set between said abrasive plate and said pressing plate, onto said abrasive plate; a driving unit relatively moving said abrasive plate with respect to said pressing plate so as to abrade the work piece; a pressure source being connected to said pressure vessel, said pressure source increasing or reducing the inner pressure of said pressure vessel; and a plurality of rollers contacting an outer edge of said pressing plate so as to hold said pressing plate at a prescribed position on said abrasive plate.