Patent ID: 6435954
Filing Date: 2002-08-20
Classification: B24B

Abstract:
An abrasive machine for shaping a mantel surface of a substantially cylindrical work piece comprising a rotatably driven tool, chucking equipment for holding said work piece relative said rotatably driven tool and feeding means for effecting relative displacement between said work piece and said rotatably driven tool,said machine further comprising: a tubular cylindrical housing extending about a longitudinal axis, said housing having a longitudinal cylindrical inner space extending from a first end of said housing, said cylindrical inner space having a longitudinal axis which is offset from the longitudinal axis of said housing; a shaft arranged in said inner space for angular displacement in said inner space, said shaft being provided with a recess; a motor arranged in said recess; a spindle coupled to said motor, said spindle extending at an angle to said longitudinal axis of said tubular cylindrical housing and cooperating with said chucking equipment to hold and rotate said work piece; a rotatable outer casing peripherally enclosing said tubular cylindrical housing, and a lid member firmly connected to said outer casing for co-rotation with said outer casing, said lid member extending radially over said first end of said tubular cylindrical housing with said lid member being provided with a central through opening having a peripheral surface, said peripheral surface extending from an interior surface of said lid member facing said first end of said tubular cylindrical housing to an exterior surface; wherein said rotatably driven tool comprises an annular region of abrasive material on said interior surface of said lid member, said annular region of abrasive material being concentric with said central through opening of said lid member; and wherein said shaft is arranged in said inner space such that when said shaft executes an angular displacement in said inner space, said work piece held by said chucking equipment is caused to approach and contact said annular region of abrasive material.