Patent ID: 6280304
Filing Date: 2001-08-28
Classification: B24B

Abstract:
An abrasive machine, comprising:a lower plate for holding a work piece;an upper plate for pressing the work piece on said lower plate, said upper plate being relatively moved with respect to said lower plate so as to abrade the work piece; anda plate supporting mechanism supporting said upper polishing plate, said plate supporting mechanism being capable of adjusting a pressing force of said upper polishing plate, said plate supporting mechanism including:a base frame;a cylinder unit provided at an upper part of said base frame, a piston rod of said cylinder unit being capable of extending and retracting in the vertical direction;a rotary plate rotatably attached to a lower end of the piston rod of said cylinder unit;connecting rods vertically and movably extending through said rotary plate, lower ends of said connecting rods being fixably connected to said upper plate so as to rotate said upper plate together with said rotary plate while allowing relative vertical movement therebetween, upper ends of said connecting rods respectively having stopper sections which prevent detachment of said connecting rods from said rotary plate; andelastic members being respectively provided between the stopper sections of said connecting rods and said rotary plate, such that said upper plate is supported by said cylinder unit, and a weight of said upper plate is gradually applied to said lower plate via said elastic members which are provided between said rotary plate and the stopper sections of said connecting rods to receive the weight.