A method of resuming the wire sawing process of a workpiece after an unscheduled interruption

摘要

A process for resuming an interrupted process for sawing a workpiece (5) into a plurality of disks with a wire saw, comprising a saw wire (3) which spans a wire gate (4) consisting of many parallel wire sections, the saw wire (3) having a forward movement of a transmitting coil (1a) is unwound, is guided over at least one rotatable deflection roller (2) in the wire gate (4), the wire gate (4) via at least one further rotatable deflection roller (2) again, on a receiver coil (1b ) and the saw wire (3) was moved forwards alternately at intervals of time by a length L1 and backwards by a length L2 before the interruption; wherein the wire gate (4) penetrates with forward movement at a first speed v1 of the saw wire (3) into the existing kerf of the workpiece (5) with the addition of a liquid sawing medium until the wire gate (4) or the workpiece (5 ) has arrived at the position of interruption of the wire sawing process, and wherein the saw wire (3) comes to a standstill, wherein the wire (3) at the resumption of the sawing operation alternately at timed intervals a length L3 with a speed v forward and a length L4 is moved backward at a speed v ', where L4 is less than L3 and a forward and backward movement corresponds to one cycle Z, and at each, every second, or after any number of forward movements, the forwardly moved length of wire L3 is extended until the wire length L3 of the wire length L1 of the forward movement before the interruption.