Patent ID: 6430791
Filing Date: 2002-08-13
Classification: B23D,B23F,Y10T

Abstract:
Device for manufacturing a part provided with an outer profile wherein a work piece (32) is pressed by a thrust piece (24) in an advance direction (60) through an annular cutting tool (34), the cutting tool (34) has a central axis and a plurality of annular discs (36, 38, 40, 42, 44, 46) with inner cutting edges (62) surrounding cutting tool openings (48, 50, 52, 54, 56,58) for removing material from the work piece (32), the annular discs (36, 38, 40, 42, 44, 46) are spaced by spacers and connected by bolts, and the cutting edges (62) are progressively projecting in the advance direction, each cutting edge (62) removing material chips and the last cutting edge in the advance direction (60) corresponding to the desired outer profile of the part, chip chambers (74) being formed between the cutting edges (62) for receiving the chips, and being connected to outside the device through radial connecting openings, characterized in that the spaces between respective pairs of annular discs (36, 38, 40, 42, 44, 46) of the cutting tool (34) are formed by individual, separable annular spacer discs (126), regularly arranged circumferentially around the cutting tool openings, the spacer discs forming the connecting openings (128) therebetween and occupying a substantially smaller angular range around the openings in the cutting tool (34) than the connecting openings (128) so that material chips can pass through the connecting openings; and that rinsing fluid passages exit at the interior of said discs to thereby guide a rinsing fluid onto the work piece (32) such that the material chips are forced through the connecting openings (128) to outside the device directly after their formation.