| 摘要 |
<p>PURPOSE:To decide on a work graphic form suitable to numerically controlled (NC) work easily, speedily, and automatically by deciding whether the graphic form is an outline line or hole from the circumscribing rectangle of a closed graphic form through a computer according to primitive input and rearranging primitives in work order. CONSTITUTION:When primitive of basic graphic elements of a straight line, circle, etc., are inputted on a tablet 3 over a look at a display on a CRT2, the computer 1 decides on closed graphic forms CL1 and CL2 and rectangles REC1 and REC2 circumscribing them. Then, diagonal point coordinates of the rectangles REC1 and REC2 are compared with each other to decide that the graphic form CL1 is an outline graphic form and the CL2 is a hole graphic form. The computer 1 rearranges the primitives of the graphic forms CL1 and CL2 in order suitable to work on the basis of the decision results and supplies them to a paper tape punch and reader 6 to perform the NC work. Consequently, work graphic forms suitable to the NC work are determined easily and speedily.</p> |
