| 摘要 |
A stone slab is processed to reduce its thickness far more quickly and with much less difficulty according to an improved method and using a new machine. The machine includes a pair of motor driven sets of disk-shaped saw blades. Each set of saw blades is mounted on a separate, parallel axle. The saw blades are all of a uniform diameter. The saw blades in each set are separated by spacing rings. The sets of saw blades are mounted to reside in parallel planes, and the blades in each set are offset from coplanar alignment with the blades in the other set. A slab of stone to be reduced in thickness is advanced by a conveyor belt beneath the rotating sets of blades along a path parallel to the blades. The blades in the first set cut a number of parallel channels into the upwardly facing surface of the slab leaving ridges corresponding to the gaps between the saw blades in the first set. These ridges are cut away by the blades in the second set of saw blades as the saw advances past them, thereby reducing the thickness of the slab and leaving the slab with a flat upper surface and with a uniform thickness throughout.
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