| 摘要 |
1,008,083. Grinding. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. July 24, 1962 [July 24, 1961], No. 28400/62. Heading B3D. [Also in Division B5] An annular saw comprises a blade 11 having an inner cutting edge and mounted on a rotatable vertical hollow cylindrical carrier 2, and a stationary cylinder 6 coaxial with and inside the carrier, the inner diameter of the cylinder, where it faces the saw, being larger than the diameter of the opening in the saw. The saw may consist of a thin metal sheet, the internal edge of which has a diamond edge 12, and is clamped by a ring 1 to the carrier 2 which is mounted in bearings 3, 4 and rotated by a belt drive 5. The cylinder 6 is mounted on a vertically adjustable plate 9 and has bores 8 connected to an annular lubricant feed duct 7 whereby lubricant is directed at the cutting edge of the saw. During operation, the workpiece is advanced in the direction of the arrow 15. The sawing sludge is thrown centrifugally along the lower side of the saw. The top of the cylinder is adjusted so that there is a small gap between itself and the lower side of the saw and some of the sludge passes through the gap and holes 2a to a reservoir, the severed section 13a falling on to the screen of a collector 17 in a separator 16 which has holes 16a leading to a suction pipe 19 for removing oil mist from the separator and a passage 20 leading to the reservoir 21. In other embodiments, the carrier and cylinder are of funnelshape or have stepped diameters. |
