US 6,280,304 B1Granted

Abrasive machine

AssigneeFujikoshi Kikai Kogyo Kabushiki Kaisha

InventorsYoshio Nakamura, Norihiko Moriya, Atsushi Kajikura

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Abstract

The abrasive machine of the present invention is capable of smoothly adjust the pressing force of an upper plate. The abrasive machine includes a plate supporting mechanism, which supports the upper polishing plate and is capable of adjusting a pressing force. The plate supporting mechanism comprises: a base frame; a cylinder unit being provided to an upper part of the base frame, ; a rotary plate being rotatably attached to a lower end of a piston rod of the cylinder unit; a plurality of connecting rods being pierced through the rotary plate, lower ends of the connecting rods being connected to the upper plate so as to rotate the upper plate together with the rotary plate; and a plurality of elastic members being provided between the stopper sections of the connecting rods and the rotary plate, whereby the pressing force of the upper plate is adjusted by adjusting a lifting force of the cylinder unit, which suspends the upper plate.

Claims12

Dependent claims

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;
and
a 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;
and
elastic 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.

7 more elements

Dependencies are inferred from the claim text.