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如何在cad中画缓和曲线(How to draw a transition curve in CAD)
如何在cad中画缓和曲线(How to draw a transition curve in CAD) How to draw a transition curve in CAD First, draw the tangent length in CAD Two, running procedures: in the command line, enter HH enter Three, select the two tangent, and then enter the curve radius, such as: 2204.5, enter Four, enter the transition curve length, such as 270, drawing completed! Figure Notepad format content, the new LISP language, in CAD, you must first load Polyline simulation curve;. Enter a stop line, radius, curve length, or design speed. ; command: HH (defun, com_p () (setq, l, 0) (command, UCS, O (list (- 0, x1) 00)) (command, pline (list 000), W, 0 (repeat 1000 (setq L (+ L (/ Ls 1000)) X (+ (- L) (/ (*, l, l, l, l, 40, C, C)) / (/ * l, l, l, l, l, l, l, l, l, C, l,, C, C, C, and) Y (* id__ (+) (- - (/ * l, l, l, l, C, l, l, l, l, l, l,, C,,, C,, C, C, C, C, C, l, l, l, l, l, l, l, C, l, l, l, l)) Setq); (command (list, x, y, 0)) ) repaet ) command (setq, pt5 (trans (list, x, y, 0) 10) ) com_p (defun, ll_v () (setq, V (getreal, \nGive, Velocity:) Ls1 (* V 0.85) Ls2 (/ * 0.0357, V, V, V, R) Ls (max, Ls1, Ls2 (/ R, 9)) Ls (* (fix (/ Ls, 10)) 10) Setq); (if (, Ls, R) (setq, Ls, R)) (ll_d) Ll_v); (defun, ll_d () (setq OS (getvar osmode)) (setvar, osmode, 0) (setq, C (*, Ls, R) Q (- (+) (/ Ls 2) (/ (*, Ls, Ls, 240, R, R)) (/ (*, Ls, Ls, Ls, Ls, Ls, R, R, R, R)) / (/ *, Ls, Ls, Ls, Ls, Ls, Ls, Ls, Ls,,, R, R,, R,, R, R, R)) PT1 (CDR (Assoc 10 (entget (car, P1))) PT2 (CDR (Assoc 11 (entget (car, P1))) Pt10 (polar, pT1 (angle, pT1, pT2) (/ / (distance, pT1, pT2) 2) PT3 (CDR (Assoc 10 (entget (car, P2))) PT4 (CDR (Assoc 11 (entget (car, P2))) PT20 (polar, pT3 (angle, pT3, pT4) (/ / (distance, pT3, pT4) 2) P (+ (- *, Ls, Ls, 24, R) (/ (*, Ls, Ls, Ls, 2688, R, R)) / (/ * Ls, Ls, Ls, Ls, Ls, Ls), R, R, R,, R, R, R, Ls) JD (inters, pT1, pT2, pT3, pT4, Nil) Alf1 (angle, pt10, JD) Alf2 (angle, PT20, JD) ALF (- (angle, JD, PT20) alf1) Setq); (if (or (, ALF, PI) (and ( ALF 0)) ( ALF (- 0, PI))) (progn (setq
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