| 摘要 |
A diamond wire saw exhibits a disc fitted with a groove. The diamond wire is wound around a supply reel activated by a first motor placed close to the centre of the disc. The diamond wire then passes over a pulley, then into the groove of the disc. The diamond wire moves away from the disc in a loop passing through two pulleys between which is placed the part to be sawn. The diamond wire then passes through a tension pulley, then returns to a pulley placed on the disc, and from there to the groove, then to a take-up reel placed close to the centre of the disc, symmetrically to the supply reel. The disc oscillates, communicating a to and fro motion to the wire. At each oscillation, a motor placed on the disc and controlled by approach switches depending on the angular position of the disc, makes the supply reel turn at a certain angle, freeing a certain length of wire. Likewise, the take-up reel turns at a certain angle and winds a certain length of used wire each time that the tension pulley reaches a determined position. The wire is thereby continually replaced during sawing.
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