Method of determining expanded shape of a product in a cad system

Abstract

Abstract A method of determining expanded shape of a product to easily and correctly find the expanded shape of a product produced by bending using a CAD system. As an operator manipulates a tablet device to form first and second projection drawings on two planes that are in parallel with the outer surfaces of first and second portions of an L-shaped product on both sides of, for example, a bending line, the processor draws (S1) the first and second projection drawings on the display screen according to shape data that define the two projection drawings, calculates (S5) the distances for moving the second projection drawing in the X-axis and Y-axis directions as well as the angle of rotation in order to bring the two vertexes of each of the projection drawings in agreement with each other depending upon the pick inputs (S2, S3) of two vertexes on the side of the bending line of the projection drawings drawn by the operator via the tablet device, produces the shape data that represent the shape of the product after bent and expanded based upon the calculated values, thickness of the plate, and the amounts of expansion and contraction of the material of the product caused by bending as calculated depending upon the input data that represent the bending angle and bending direction, and draws (S7) the expanded shape of the product on the display screen.

Inventors

• 👤 Masaki Seki
• 👤 Shizuaki Fanuc Dai3Virakaramatsu Hayanagi
• 👤 Koji Fanuc Dai-3 Vira-Karamatsu Suzuki
• 👤 Takeshi Room 8-307 Fanuc Manshonharimomi Hosono

Bibliographic Details