| 摘要 |
A drawing device for drawing of cubic curves contains a crank cinematically connected with a crank arm, a guiding crank arm installed into a sliding block, a pair of sliding blocks cinematically connected together, with the crank arm and guiding crank arm, and a basis, on which a crank and a sliding block are installed. It is equipped with a pair of additional sliding blocks, a vertical guide and with a pair of horizontal guides connected together by the vertical guide installed on the basis and cinematically connected with guiding crank arm, and a pair of additional slide blocks is cinematically connected with the crank and vertical guide. |
