| 摘要 |
PURPOSE: A method for extracting pipe cutting line is provided to reduce processes and to satisfy the pre-determined gap of 3-5 mm, by only one cutting. CONSTITUTION: A method for extracting pipe cutting line comprises: a step of marking measuring location on the both sides of an elbow pipe; a step of emitting two-direction light crossing each other; a step of extracting the length of cutting line and gap information of the elbow pipe; a step of marking the measuring location corresponding to the elbow pipe; a step of emitting the two-direction light crossing each other toward each end of a pair of linear pipes; a step of marking a cutting line by using the gap information of the linear pipe or the length of cutting line. |
