| 摘要 |
The invention refers to an external abrasive machine, precisely an external grinder for removal of material from the outer envelope surface of annular work pieces, and/or from flanges associated therewith, and particularly ball bearing race rings, belonging to type comprising a rotatably driven tool, such as a grinding wheel (18), clumping elements (14) for a work piece (15) to be mechanically processed, and feeding means (10, 11), for performing relative feeding movements adjusting mutual positions between work piece (15) and tool (18), wherein the machine further comprises a tubular cylindrical housing (3), having a longitudinal cylindrical inner space, where the cylindrical inner space (4) has its longitudinal axis offset the longitudinal axis of said housing, next shaft (7) provided in the said inner space (4), and having a recess (7a), where a motor is arranged (17) coupled to a rotatable work head (16), which, together with said clumping elements is arranged to hold and rotate a work piece (15) to be treated; then shaft (7) being angularly moveable in the observed space; the housing (3) being enclosed by a rotatably driven outer casing (5), where the said casing (5), is being firmly connected to a lid member (19), having an opening (20), forming at its inner edge, a tool, such as a grinding wheel (18), where the observed shaft (7) when being angularly moved in the mentioned space, displaces the work head (16) with the work piece (15) in a path, allowing the work piece to approach and contact the inner periphery of the tool (18). |
