Patent ID: 9417618
Filing Date: 2016-08-16
CPC Classification: B23K,B26D,B26F,G05B,G06Q,Y02P

Claim Text:
1. A method of cutting one or more kinds of quadrangular unit pieces having a relatively small size from a quadrangular base material to manufacture the quadrangular unit pieces, the method comprising: (a) an inspection step of scanning a quadrangular base material in a longitudinal direction and in a lateral direction of the quadrangular base material to check positions of defects on the quadrangular base material; (b) a calculation step of calculating a yield when imaginarily cutting the quadrangular base material using at least two virtual cutting frames, each virtual cutting frame having a plurality of cutters arranged in a fixed array forming a plurality of quadrangular unit pieces and each cutter having a fixed size, wherein the respective virtual cutting frames are different from each other in terms of cutter arrangement and cutter size; (c) a selection step of selecting one of the virtual cutting frames in which the yield calculated at the calculation step (b) is within a range of above 30% of a maximum yield of quadrangular unit pieces in consideration of positions of defects, wherein the selected virtual cutting frame is set in a lateral or longitudinal direction from a first position to a second position when an increase in the yield is 20% or more of a previous calculated yield; and (d) a manufacturing step of cutting the quadrangular base material using a cutting frame corresponding to the virtual cutting frame selected at the selection step (c) to manufacture quadrangular unit pieces, wherein the method further comprises a virtual cutting step of cutting the quadrangular base material where the virtual cutting frames are imaginarily moved in the longitudinal direction or in the lateral direction of the quadrangular base material at predetermined intervals to obtain a position having the maximum yield, the imaginary cutting step being carried out prior to the selection step (c).