有下面一段渐开线程序：. _! `+ y! S: C. K9 X) F1 W8 \4 p
;;;begain suprgear.lsp
" K* O2 G, K# D6 Y;*************************************************
) f; s0 `( U; e, p! ?9 G9 g;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
$ f2 I3 u) p) `3 @3 ?0 Y- D;-------------------------------------------------
' a- l8 z5 a- `3 a, F; This routine draws a spur gear using joined
6 y: N5 a, K8 W9 _0 ^8 o4 n; polylines. It lets you use any pressure angle
! o9 y/ H/ A# d' w; to design the gear teeth. ) h# z+ B6 R# \" J
;************************************************* ) ?- Q) w2 w. B$ M
(defun err (s) % I! {) H' } v% ^
(if (= s "Function cancelled") . p4 i! g. @3 e: R: N+ m" Z
(princ "\nSPURGEAR - cancelled: ") 9 \! r7 l! V/ X I1 h
(progn (princ "\nSPURGEAR - Error: ") (princ s)
# m1 `+ q# f/ ?( v' O% S! k(terpri)) 9 e$ U+ i* e1 ~0 E
); if 2 w2 h0 P$ m% C1 Q: M
(resetting) " A# v* R6 y5 z3 F
(princ "SYSTEM VARIABLES have been reset\n") 3 e! R/ a% L: N! k
(princ)
- l0 V% t- E* a); err
- ?" M H5 c" G5 p: V) m0 ]) C- {% ?$ r
(defun setv (systvar newval)
7 s4 |! {3 p2 G Y(setq x (read (strcat systvar "1"))) & L3 Q7 w" z5 u, z8 G
(set x (getvar systvar))
9 w' M: ?6 h% j- h1 |7 }9 Y(setvar systvar newval)
& O4 E- M1 n% o# o) N/ [); setv # ?5 [0 h* M- e# E9 y# g" x
& f' T! b3 q! t$ a(defun setting () 6 U4 h8 d& {, l- N* c9 ~2 ]
(setq oerr *error*) & {7 ^* `7 @& L% c! u
(setq *error* err)
& G* D6 ~/ o2 H& Z3 {(setv "CMDECHO" 0)
* f1 i3 u& d( g! l! S! K/ N- t+ B(setv "BLIPMODE" 0) 5 D7 Y. N- U4 v( l2 W# b
); end of setting # ~! R8 [- {% m
(defun rsetv (systvar) 8 Y" n& O5 S% I/ q. @
(setq x (read (strcat systvar "1"))) % [/ s8 O8 u5 ~) d, n! @
(setvar systvar (eval x)) 5 e! ~" y0 {4 }/ g; \3 G$ }
); restv ; ^' r& [7 q; e" a6 z
(defun resetting () - A; |8 |% T! l2 z+ B% c$ u/ O
(rsetv "CMDECHO") 7 |8 T6 j3 c/ Y! ?6 e7 i
(rsetv "BLIPMODE") 8 {4 Z* {& E8 |2 u6 @, T) @
(setq *error* oerr)
3 q* P* g4 e8 S* X0 a); end of resetting
# t# s" p" ]9 x t n, H! t) W' G2 u$ A, G4 W! H% O$ U( J" A
(defun dxf (code ename)
! f4 w5 @" i. X5 P(cdr (assoc code (entget ename))) 6 a; `3 G; V6 w4 N; C$ t
); dxf ' D k, m: }& i0 u+ [
! l/ l( z% N& u% N1 x3 R+ R(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
# ?/ c5 ~4 A4 u ttrimcode invent p0 p curvent linent linent2 ent2 p2)
7 b5 W, S5 u% |. h; K) |, S(setq D (getreal "\nPitch diameter: ") % D8 V2 F6 i4 |
N (getint "\nNumber of teeth: ")
# v' F7 V4 `$ F# _phi (getreal "\nPressure angle: ") . P: @, `1 a9 e c. x- V; H4 N2 P
phi (* (/ phi 180) pi) ; Pressure angle * J$ |* M7 Q" C" Q X
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
" q( L, v, c b- l* NRO (/ DO 2.0) ; Outside radius
0 x5 V" }% y' D8 ?( t' jA (/ D N) ; Addendum 6 L1 h3 A$ ~$ j* A4 P) _( r& r3 r4 \# V
B (* 1.25 A) ; Dedendum
6 j- B @+ w0 A/ h5 H, kDR (- D (* B 2.0)) ; Root diameter * X0 H$ s2 {. Q0 b ?
DB (* D (cos phi)) ; Base circle dia. , G4 d( E8 A0 O9 p. F. W
inv-plst (involute DB N phi);involute points + k; C. n8 z0 k1 ^
trimcode nil
" f3 J, b5 ]3 g/ E% W. K# O! B. N* v# V); setq
* L1 q; J: Q: i(command "ZOOM" (list 0 (- B)) $ B. M A2 e* h( I. R
(list RO (/ RO 1.5)) ! i6 @; L, B: b/ g5 }+ A e( T& N
); command
. g7 f; n& E7 T4 Z(setq invent (draw-inv inv-plst)); Draw involute.
& F0 `, L) v s! \ l3 d5 D0 ?(setq p0 (car inv-plst)
; ]2 J8 ~) }4 p7 h7 x( B" Dtrimcode (ext-trim p0 DR D);trim or extend
- ]- T% Y( I: D- i: E5 k( J); setq ; the involute.
! v* s9 a- h& A, |+ Q+ e# {8 Z* O8 N(if (and trimcode (= trimcode 0))
8 M: C, i# j7 g# W# K& r4 T(progn ; Joins the involute to the extension. 3 `8 Z, c" r7 e
(setq p (list (/ DR 2.0) 0)) 6 a) F' M( V+ }
(command "PEDIT" p "Y" "J" invent "" "X")
4 r. N- C9 w* l, U6 M# A4 K(setq curvent (entlast)) : K: M+ G7 }& n
); progn
5 D( I2 O8 R" e1 ]/ W/ S(setq curvent (entlast)) 5 x' e$ k3 V+ F" @/ P# O
); if + B/ Q* D4 y$ F! N
(if (null trimcode) (setq curvent invent))
) P f0 n+ O9 \! f* q(setq linent (draw-top-line D DB N RO)); top line. ; ~' m g H8 c, ]5 \, Z
(command "COPY" linent "" "0,0" "0,0") % R$ O! L5 \- a
(setq linent2 (entlast)) 3 c' U" S; |. q
(setq ent2 (mir-it curvent linent)); mirror curve
; k4 {+ P% }# n( Q$ A! f(command "PEDIT" curvent "J" linent ent2 "" "X")
" m/ K% z' Z( w. `/ j(segment DR N linent2) ; Finish the job!
9 k+ Z" N; _+ }" L1 a( H9 P(setq p1 (list (- RO) (- RO))) 8 I, C* ~3 f6 A# {
(setq p2 (list RO RO))
, N2 z1 v/ S; l(command "ZOOM" p1 p2) 0 `# S5 P6 r% H, l0 D( W
(prompt "\nConverting to POLYLINE, please wait...")
" ]6 g$ x. ~% W, S, b# a(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") 7 l7 E8 g$ a& e, P1 c# n8 J
(prompt "\nAll done!")
) Q. A. ]1 t1 S7 g); spurgear & B- Y! v+ @6 ?, j3 j* H5 I
& @3 Y) ^# M3 l5 n g) P! r8 z(defun involute (DB N phi / numer denom frac theta2max
) ?7 f2 C9 N, f' Z' Qthetamax theta-inc theta plist RB xval yval p)
# r0 V9 S8 m- O3 @- C# y' E(setq invfact 3)
; h& G, Q+ r# `" k4 K(setq numer (+ N 2.0)
! c2 x, o/ {5 U$ S/ z; o% J8 A7 H& ndenom (* N (cos phi)) & v, N; Y1 P4 J$ p7 @ t
frac (/ numer denom) 4 F, E; z9 b; A- g
theta2max (- (* frac frac) 1) ! o/ t. Q' M) X. p+ Y/ w2 c5 n$ Y5 e2 z
thetamax (sqrt theta2max)
! M/ a( @, e) W, v" s; i: Xtheta-inc (/ thetamax (float invfact)) / w! f K/ [, l2 T3 N1 a
theta 0
3 j: k" @' d# p3 }# Mplist nil
: j# ~( D. _# V9 QRB (/ DB 2.0)
1 b: u2 q2 [8 Y, D U); setq + P- \2 o& f7 \8 i; j, K
(repeat (1+ invfact) 1 x* e0 S0 d7 D
(setq xval (do-x RB theta) 2 a4 \8 Z' y% m4 F4 q/ ^
yval (do-y RB theta)
$ _7 n. E$ r" Hp (list xval yval)
2 N' F3 `: s( {+ \! a, B: wplist (append plist (list p))
: ^5 w- q: G- f+ Z: S. @ N5 U); setq ) {0 I! @: k( D
(setq theta (+ theta theta-inc)) 7 ~ t8 T g% A: B0 W6 l- E
); repeat
% _; e" p7 m) P5 A9 splist T+ [( Q5 l& ]: g" |$ B6 ?6 g
); involute
! j. V' n4 p4 F5 }
) g* B$ A# q4 @0 a) `(defun do-x (RB theta) ; L! w& C4 g* Z( V* |9 i$ A
(* RB (+ (cos theta) (* theta (sin theta))))
* b4 C2 w3 E: J C* [$ s); do-x
: ^2 c& o; E" V5 R6 y& x* H, _- j+ q4 y1 j, y. f
(defun do-y (RB theta) 4 m' R6 w$ s! o( r; U
(* RB (- (sin theta) (* theta (cos theta)))) " j" }$ w1 `5 A4 ~
); do-y
: K. y2 X2 g- J; a! y# m9 s7 [2 K
(defun draw-inv (inv-plst / dirpt plist p)
( H2 ?# o4 ~% j" L- u! c8 T(command "PLINE" (nth 0 inv-plst))
1 `4 L0 Q8 w2 _2 G! e! c, G(setq dirpt (polar (nth 0 inv-plst) 0 1)) 8 ]' v' ~, n( p# e0 q
(command "A" "D" dirpt)
) k, y8 x8 ?! J1 c& D(setq plist (cdr inv-plst)) + Y- h/ s) Z5 [& w- {9 s
(foreach p plist (command p)) * ~7 u% `( D4 ~/ N& \& ]
(command "") 5 r, F! G* E+ p; W4 b t/ e
(entlast) ! j+ m7 y3 E# f
); draw-inv
2 @2 i. Z0 n$ {6 t9 j' h9 f( J# O3 A! Y
(defun ext-trim (p0 DR D / trimcode dist endr)
: i T! j1 T# B4 a$ i5 o(if (> (car p0) (/ DR 2.0)) ; Extends the involute
6 h0 ^* f. x* X. m& J7 l(progn + B$ @. J2 D6 A
(command "LINE" (list (/ DR 2.0) 0) p0 "") 8 c1 g" [ D' q
(setq trimcode 0) 6 Y/ T5 s, V3 h0 D2 k
); progn
/ {+ @6 F. N4 v5 `0 |1 u, t) K); if
l0 A. r7 O) Z9 L$ I(if (< (car p0) (/ DR 2.0)) ; Trims the involute
+ E% A( \* |2 v" ](progn / d0 c9 q) U8 }4 }% @
(command "CIRCLE" "0,0" "D" DR); Root circle
# L( K3 q w4 V& `6 P(setq dist (- (/ D 2.0) (car p0))) 8 i- E& c8 k* ~# ?4 u; R' ?2 o
(command "ZOOM" p0
" N% e$ A( r4 ?5 g' M& n% Z1 M(polar p0 0.6 dist))
' Q Z. |! K: `8 T(setq endr (entlast))
; [& n' x7 @* X6 u(command "TRIM" endr "" p0 "") - B: h# w( A% }, I
(command "ZOOM" "P")
: E: m2 f" V" m: U& B(entdel endr) ! T) z5 a8 ]/ X5 i
(setq trimcode 1) ! F# y" [* ?0 z7 `
); progn + K# ^/ Z, Z. W0 b, j3 h8 w! Y
); if
, A8 i- y/ D( O: ]' q0 k- T! `trimcode ' k+ b1 [2 a( z5 _
); ext-trim ) I$ e' h" g5 {' U+ C* m4 w
& S7 e$ E2 b# T( W( Q' Q(defun draw-top-line (D DB N RO / theta-p xp yp alpha ; V1 V" Y# d+ K7 `( k, [
beta tang angend inv-endpt lend) 1 ]1 T7 ^0 h, Q
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) : U, f9 z3 }. ~
xp (do-x (/ DB 2.0) theta-p); This section & a+ W3 E3 @& o: H5 G
yp (do-y (/ DB 2.0) theta-p); sets up angles
* v6 d) T3 V. H6 |; l- P/ Lalpha (atan yp xp) ; for drawing a . }9 c5 ~8 D& O: v( T
abeta (angle (list 0 0) (last inv-plst)) ) i" K$ Q% Q4 r s
beta (- abeta alpha) ; line across the
( L* O- K! S Y. Ytang (/ pi N) ; top of a tooth ; j- G7 c9 B7 w3 a
angend (- (+ alpha tang) beta) 8 J7 j0 [7 f! y
inv-endpt (last inv-plst); This also creates 2 x3 G( x5 e# H
lend (polar (list 0 0) angend RO); the tooth 7 G2 ^: B o6 S+ q5 ~
); setq ; thickness. & v8 z6 Q# B E8 c _# d
(command "LINE" inv-endpt lend ""); Draws the line
8 t: w9 z+ j" \4 e7 a. Y: w(redraw) $ h; P1 A3 s# w V4 z3 L
(entlast) 0 b7 K* i8 C6 O6 [5 W5 ]! |- w2 a9 J9 e
); draw-top-line
3 w3 K% z+ u* A# t6 I3 h5 b3 u
+ K% J/ v% {0 v! b6 g$ y& G(defun mir-it (cvent linent / pt) # {" T+ ?; }5 V1 s4 [' j2 U+ k
(setq pt (dxf 11 linent)) 6 n% x; L! H7 l: ]
(command "MIRROR" cvent "" "MID" pt "0,0" "") : O2 ? N4 L2 H" Z1 C; r
(entlast)
0 B) o2 e& }' _1 a' C ]+ `); mir-it
9 g% Q6 T; L2 t T6 {4 F' \- T8 `) y, e* E6 P- |( q9 Y
(defun segment (DR N en / p1 p2 ang dist midp p0 pang
3 H+ g) `5 _3 l1 i6 r- a) ~pang2 p p3 ent3 entl1 entl2 en1 en2)
* f% `' G: M; M7 r% @(setq p1 (dxf 10 en) " `" P7 Q( d1 |4 U
p2 (dxf 11 en) 0 e. q' q) V0 F# w0 V
ang (angle p1 p2) ! r2 R0 Q- E' X
dist (/ (distance p1 p2) 2.0)
5 w# E/ A8 [+ l3 ?midp (polar p1 ang dist)
- |- _- h. J8 `5 vp0 (list 0 0) # R0 y: \+ d" @
pang (angle p0 midp) + C, ?1 J* e% h4 x$ J
pang2 (/ pi N)
3 U9 ~; J, N) A* ]9 }5 n: mp (polar p0 pang (/ DR 2.0)) 6 Q- H! y% ] A; e, a1 }
p1 (polar p0 (- pang pang2) (/ DR 2.0)) 8 T8 K8 f$ P, s2 f
p2 (polar p0 (+ pang pang2) (/ DR 2.0)) 0 ^! ^0 p j: J' S7 b
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
4 y2 O; N' |& [1 _3 y* U, Xent3 (entlast); This is the tooth p-line
h+ m, M8 w: i5 J2 L X) l* n" v( R); setq
x- z4 N5 {# ` a& r. ?0 J(command "ZOOM" "W" p3 p1)
, _& i1 J9 N9 z. U6 {; o6 ](command "CIRCLE" "0,0" "D" DR) ;Root circle / c. w+ S$ L, J2 u! g' r, g* A
(command "TRIM" ent3 "" p ""); Trim the root circle - d k$ r) z/ G. r
(command "ZOOM" "P") # D: F* O7 C0 g. I
(command "LINE" p0 p1 "") ! {3 t" R, G8 u* J. O: l
(setq entl1 (entlast)) 2 k# R! c I/ u8 E# T
(command "LINE" p0 p2 "")
+ h( U* l+ u5 q3 C8 k0 B(setq entl2 (entlast)) 8 ]6 |$ Y# j6 H$ K) u; ~
(command "TRIM" entl1 entl2 "" p3 "")
+ j, N% v: G- B9 Q* f- F" G5 g(entdel entl1)
3 @$ P |0 z. u: N(entdel entl2)
# @ N4 u# U' f- f) _* \ L# u) R(entdel en)
: A' ^, D n1 t" U7 \(command "ZOOM" "W" p3 p1) " o' j/ S& i5 [. ]
(command "PEDIT" p1 "Y" "X") 8 _- n2 k5 U8 Y* \" ]6 k
(setq en1 (entlast)) ( P& u( l: u$ N0 W( `2 d F- C
(command "PEDIT" p2 "Y" "X")
* ~3 S+ k' I; X: Y$ x* U(setq en2 (entlast)) 1 _, @! L% K2 l6 ~
(command "PEDIT" en1 "J" midp en2 "" "X") 9 C5 B; X) G5 l* m( d
(command "ZOOM" "P") ' W- i6 l4 h( U
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
" f; Q% L- ?! l# Q4 Q) v); segment
+ I5 ]3 o7 x! l: Z& N# ~: {4 l% [: ?& b" f" t( w: s, O2 G
(defun c:sg ()
5 N4 o: P; h; B- k' E6 N(setting) $ p4 D- ^7 R& o! [6 E$ V
(spurgear)
+ L% l! x3 g. |(resetting)
, W; d) k& j' S(princ) 8 J0 g E5 @% \6 r5 R
); c:sg
8 u9 j8 [* ~+ i' F* W3 j7 G
. c% l! F" l* k. ]: T* m(prompt "\n**SPURGEAR.LSP Loaded!") , S8 E& L, g- m+ q% G0 [
(prompt "\n Enter 'SG' to start") 4 t; X: |9 T- f5 a
;;;end suprgear.lsp
) X+ r8 c6 ]0 _/ J打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的" i. G" j. X V# C3 a% B& {1 o6 W1 I% C" q
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输+ G9 g$ m8 g8 a6 l) \( o& ~& |
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
