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有下面一段漸開線程序：
$ S$ l: t0 P, L5 R4 w( g2 t- w;;;begain suprgear.lsp ) G: a L/ k0 v/ H& z- m! D
;*************************************************
) y, v: I9 z3 G5 g- M j; Y6 d;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
6 |6 c. y$ C- L5 y;------------------------------------------------- 0 e) w% X& {* F* L
; This routine draws a spur gear using joined ]7 J/ K( k/ R0 `$ a9 d) U
; polylines. It lets you use any pressure angle ) c: _9 U0 {) ?' D$ S/ \% V
; to design the gear teeth. ; r$ T3 x5 [. |: P
;************************************************* 1 j% B/ d0 w) P/ b$ A
(defun err (s)
+ r2 ~. e3 F8 y# \(if (= s "Function cancelled") 6 f$ g. k: x" F: G% Y5 J
(princ "\nSPURGEAR - cancelled: ")
0 i& Z! |, P! T& ](progn (princ "\nSPURGEAR - Error: ") (princ s) $ M7 n7 d3 o' g1 G
(terpri))
+ s k9 \% b7 w/ Y); if
" F9 ?: z" \+ x- q(resetting)
+ f3 {' c9 R: w( o+ Y(princ "SYSTEM VARIABLES have been reset\n")
, v! _ U; b1 l, y% ] X8 U+ G(princ)
+ K( ~8 W! S; y; E; I: T); err
( P. ]: a+ p* z: M2 x0 C, q! h% p7 x' P* A' i6 s8 B' v! h
(defun setv (systvar newval) ) L% \' G4 o' f! b6 N' {
(setq x (read (strcat systvar "1"))) ' v" x9 h$ i$ `% ]6 m* ?& U
(set x (getvar systvar))
4 J% e' e2 ` t q(setvar systvar newval) & v: A" m; r& }
); setv
4 S: \: e) Q! X( z3 W7 H
6 Y. R8 O8 t3 E( X( j4 y(defun setting () $ v1 t: Z3 b" Y, i
(setq oerr *error*)
, @. }7 f. m2 Y(setq *error* err)
8 d v7 z/ ^5 i V5 W(setv "CMDECHO" 0)
% d( u; Z( o/ f( p- a5 [(setv "BLIPMODE" 0) + o, K" Q# M1 [( ~, E. \4 n
); end of setting , F H3 n; E; _
(defun rsetv (systvar)
9 g, n1 b* `; H1 `3 ^: ^(setq x (read (strcat systvar "1"))) 5 c+ M9 d, E3 N# g8 W4 v$ I: Z
(setvar systvar (eval x)) 9 r/ w, G6 P; a/ ]' o8 \1 a
); restv ' c) a/ a. ^, H) N1 z2 ?9 z2 E
(defun resetting () E: h: {" D% N0 a( _ q
(rsetv "CMDECHO")
O9 u$ C+ K5 _+ ?$ k4 K(rsetv "BLIPMODE")
4 v! j5 v5 f4 j(setq *error* oerr)
+ _6 _: T9 t+ Q9 v; \); end of resetting
5 A3 W" L7 d; J) q
$ r: K! @( p: n. P0 x$ M5 z(defun dxf (code ename) & U* H& N {& P8 k) ]1 S! |
(cdr (assoc code (entget ename)))
$ q* b9 w8 y$ \); dxf
8 k, K% I" \# c; E9 j. T" Q, x3 e1 @0 F$ M& m. m
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
" `9 M6 S/ E- c$ d5 Q. Y. n% I0 gtrimcode invent p0 p curvent linent linent2 ent2 p2)
! S. l7 n8 x2 [0 e% B, ^7 c(setq D (getreal "\nPitch diameter: ")
$ X7 B' ?! o' v& t8 [N (getint "\nNumber of teeth: ")
: [7 N* P2 J$ j( c6 z/ i7 uphi (getreal "\nPressure angle: ") 9 G$ K- k4 b9 z. n. z, E! W
phi (* (/ phi 180) pi) ; Pressure angle & k& M' R8 m2 o" g3 g5 _" G
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
' d5 Z+ g2 J3 lRO (/ DO 2.0) ; Outside radius , ~2 K; K7 Q5 P. h" O; T2 D, w
A (/ D N) ; Addendum 2 c" ^' D& q" | F, c+ V0 @
B (* 1.25 A) ; Dedendum
) X; O( B7 e, cDR (- D (* B 2.0)) ; Root diameter H' z' R# V( L
DB (* D (cos phi)) ; Base circle dia.
) Q, o7 ?$ l* D7 c3 Ninv-plst (involute DB N phi);involute points
, y m& w4 I3 `8 A* j5 Ktrimcode nil # M2 G; l/ g9 ]) t# @% Z# z
); setq
0 |6 ^; o6 \5 F' X1 B(command "ZOOM" (list 0 (- B)) ; U7 \7 g3 }: I: G* t$ O% P) a# p
(list RO (/ RO 1.5)) ) w/ V" ^, O$ i$ h
); command 3 h: {8 ?( }$ A. Y. u+ T, z
(setq invent (draw-inv inv-plst)); Draw involute. 0 P0 v7 Q3 M0 d
(setq p0 (car inv-plst)
( P1 }4 E# \) Dtrimcode (ext-trim p0 DR D);trim or extend
; D; e. ?+ H- E2 Z( n); setq ; the involute. * l3 t# r/ |* \. o% B$ z& p
(if (and trimcode (= trimcode 0))
7 [; o) U& T7 o% h(progn ; Joins the involute to the extension.
+ s% {4 |' W& r; a/ G(setq p (list (/ DR 2.0) 0)) 0 m1 X& \2 O" S! Z( X0 O# `
(command "PEDIT" p "Y" "J" invent "" "X")
7 m5 n3 G3 [; j T6 S+ Z9 B( a H(setq curvent (entlast)) : y4 X% [+ K/ M$ S) ?' q2 E
); progn
+ J3 G" i% z) ?8 c8 R2 t(setq curvent (entlast))
9 h$ w9 ^( M- K! w q. B); if
5 l8 T6 ?& t4 q4 f- d4 U5 M6 R7 m" g) ](if (null trimcode) (setq curvent invent)) $ u' X' E) ^% w# ~3 ~8 y& j0 B- E
(setq linent (draw-top-line D DB N RO)); top line.
1 P1 c- S) ^3 p2 s2 w(command "COPY" linent "" "0,0" "0,0")
9 L6 e2 _4 }( F v/ J(setq linent2 (entlast))
2 ]" j- y! j0 {/ h(setq ent2 (mir-it curvent linent)); mirror curve
9 E5 ?" q8 e& h& ?( d9 p0 X(command "PEDIT" curvent "J" linent ent2 "" "X") * m( ?! g2 Q7 g; T+ @0 }' p7 y1 b
(segment DR N linent2) ; Finish the job!
# I9 y5 n! t" i y1 X5 O(setq p1 (list (- RO) (- RO))) $ j6 B. @4 s/ ?# L
(setq p2 (list RO RO))
" B* G) T4 a7 k2 [3 H(command "ZOOM" p1 p2) 4 V: R5 A; k9 C- u2 {! V, r9 u; k
(prompt "\nConverting to POLYLINE, please wait...")
0 S1 n" x+ K: o( q5 X(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") ; w( L+ ]3 q/ B9 R* d
(prompt "\nAll done!") 5 d( t! e1 u7 n7 Z: {! O
); spurgear 4 W6 V' l5 m& X. }. v! F
% H F2 a$ R8 P$ s( a6 y% _& M(defun involute (DB N phi / numer denom frac theta2max
: j8 d. Z, T- ethetamax theta-inc theta plist RB xval yval p) 7 D6 d @7 V5 x- D. V* n/ l
(setq invfact 3)
2 L4 M- t. I( z% k1 A8 y2 O(setq numer (+ N 2.0) * e: V! S% A$ S: f# o
denom (* N (cos phi))
9 |$ S$ {/ j! R7 t) Wfrac (/ numer denom) 9 \( y5 A% N$ |5 W4 u4 D* W
theta2max (- (* frac frac) 1) 2 [+ j! D- J& P% q% C3 B; Q
thetamax (sqrt theta2max)
! g, [: |" a; `3 ]* {1 p9 z/ Ktheta-inc (/ thetamax (float invfact))
) `: d0 G4 b etheta 0 ( g, l: G4 r9 Y0 @1 F' ]
plist nil
3 P8 x) Q( [% W" bRB (/ DB 2.0)
, O' A* i, `0 I, `* `/ k); setq
, R& e. t# {% \. A$ Q: K(repeat (1+ invfact)
6 F, u& W. M8 q" w5 P(setq xval (do-x RB theta)
C# n& F7 G( z1 S3 ]# o1 \yval (do-y RB theta)
8 f- {1 g, @( F$ O# H. Fp (list xval yval) - f2 `4 B$ K# F6 e" C+ K$ M/ h; d, _9 n8 p
plist (append plist (list p)) $ ~4 ~3 I8 b1 o
); setq Y; h, s" G3 n1 k3 q- j7 B
(setq theta (+ theta theta-inc)) / D" r, I; i! p [4 y
); repeat 3 \/ H6 ^7 J1 Z- B2 b* Y- [. T3 `
plist ' [: A- B0 r/ `: J. Q
); involute
/ [! P5 f/ i; X6 w# V
) J2 S, t' d( j! B x(defun do-x (RB theta)
0 N4 x* C2 P7 j% Y8 u(* RB (+ (cos theta) (* theta (sin theta))))
& M/ {" G) }4 h+ ^4 O) U6 I5 [); do-x 7 V8 l7 t% a3 a! X' E' W! `6 z _5 n& T
4 {9 ]; r: I" T$ n& X4 _& U! X1 I(defun do-y (RB theta)
9 {4 U6 D- `/ A(* RB (- (sin theta) (* theta (cos theta))))
5 I& j4 }3 |! ?); do-y 0 B4 J9 \9 G2 f; y# P, c
) v9 `/ B- i: y7 G0 y& |(defun draw-inv (inv-plst / dirpt plist p)
; g b6 s$ v% Z. j) C(command "PLINE" (nth 0 inv-plst))
1 J) |! `% ]0 V0 y* x: s(setq dirpt (polar (nth 0 inv-plst) 0 1)) ! x+ H7 d% N' I- p+ S! n7 y6 V
(command "A" "D" dirpt) 8 q% P( f M g! s2 x' b8 @/ C
(setq plist (cdr inv-plst)) * O/ }9 r: M) Z$ }7 k
(foreach p plist (command p)) - ]) B7 r4 \" l# w: o$ ]$ r
(command "") + G! G r2 z% C
(entlast)
0 q! w7 J! B8 M/ }8 |7 E8 D2 w& w); draw-inv
& R$ ]4 Q0 P j7 B: V' d# W A/ K2 S _) Z3 A0 B
(defun ext-trim (p0 DR D / trimcode dist endr) " X; {3 ]5 A# Y7 e: H8 e7 E, z
(if (> (car p0) (/ DR 2.0)) ; Extends the involute " v. b1 \8 C% ~+ F
(progn
& I0 r/ ? ~2 _8 J! i(command "LINE" (list (/ DR 2.0) 0) p0 "")
9 ~) ^3 ~; X& v- u/ o0 t; G(setq trimcode 0) ' h& C& e$ e3 S' W% `3 R" O
); progn
1 E( m5 N) @6 Z: q3 d); if . L; ^" w$ s% t, k) Y
(if (< (car p0) (/ DR 2.0)) ; Trims the involute * r- f q! V% B, N& O6 ^
(progn 9 R3 G' B% V% s* a( ]1 ?0 I# D- ~
(command "CIRCLE" "0,0" "D" DR); Root circle
' m# G6 E5 j' r0 z) h: m(setq dist (- (/ D 2.0) (car p0)))
' z/ B* V. y, E6 e" x% f+ t2 p(command "ZOOM" p0
, R) p; p2 {$ ?. f3 w& A; Q! w4 k(polar p0 0.6 dist))
! M6 R0 B, R+ G. k( C2 u6 d(setq endr (entlast))
$ O' Z: u+ S& g. Q, F(command "TRIM" endr "" p0 "")
+ E' x+ E6 F( d4 f1 ^) f(command "ZOOM" "P") ' Q& h |; c- ]" b8 T. Y1 y
(entdel endr)
~! V8 t# J9 X7 h* `(setq trimcode 1) $ x# g# U- Q; \ O- P7 [" x
); progn
0 N7 m3 K4 N. d( \2 ^$ y); if : l2 J1 }1 ]7 g' \ L% v
trimcode / q" I8 W L0 i% s; K9 m0 H' K' ~
); ext-trim " Q5 _+ f: a1 O1 \
, K/ h c' v: B1 C" Y; Z( }(defun draw-top-line (D DB N RO / theta-p xp yp alpha
# M8 f" l/ O# Y* n7 zbeta tang angend inv-endpt lend)
" l0 r& U( L# @: s% U# k$ @6 Y* K8 h7 Z) F(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
/ n# Y1 d+ |( l$ g' w& \2 c/ p& C9 Mxp (do-x (/ DB 2.0) theta-p); This section
3 _3 M2 H w6 ?' a( uyp (do-y (/ DB 2.0) theta-p); sets up angles
; i1 {/ O, s$ ~' ^0 w5 ialpha (atan yp xp) ; for drawing a $ A1 _: R$ y/ l; N$ E
abeta (angle (list 0 0) (last inv-plst))
7 y6 c! y7 z( \) B/ m, kbeta (- abeta alpha) ; line across the
) F! S0 A* K& ]4 \5 A- x! k! J* P2 @tang (/ pi N) ; top of a tooth
/ q+ u! z+ {, J5 G3 |0 Eangend (- (+ alpha tang) beta) 8 p, \9 ^! z4 h5 w. j+ s
inv-endpt (last inv-plst); This also creates 9 X3 w- |& Q8 y
lend (polar (list 0 0) angend RO); the tooth
! f* C: ^$ u/ [- O, h0 G1 M); setq ; thickness.
' L- p* e5 L- ]% ^(command "LINE" inv-endpt lend ""); Draws the line V7 A8 c, Q3 q+ s3 k! X4 y/ l# p
(redraw)
! \4 `2 T: b. p% K% B, `(entlast)
) x4 r. }! k1 m; r); draw-top-line
/ W% D1 ?' j2 U& R0 {5 ]
; {- Z4 K! `6 w' I* W(defun mir-it (cvent linent / pt) 9 y# R3 @9 }& t# p
(setq pt (dxf 11 linent))
2 P8 E/ c* X8 ~- b# G- d. S(command "MIRROR" cvent "" "MID" pt "0,0" "") 0 [# W0 f9 I2 m- c& _, q) B" @
(entlast) 2 [& ^& m M) | o- C1 n& }8 ]/ m9 C
); mir-it / C1 ?( k4 u! Q% I3 U
3 R- m' @5 S7 C( D8 u
(defun segment (DR N en / p1 p2 ang dist midp p0 pang
0 H) P+ m# g& [! ipang2 p p3 ent3 entl1 entl2 en1 en2) / v9 e3 T6 [+ S( A! `
(setq p1 (dxf 10 en) ) X7 d+ c, r# u
p2 (dxf 11 en) 7 B7 P; u1 a+ G, h U( Z
ang (angle p1 p2) 9 b6 t7 f @ S! w) E8 b
dist (/ (distance p1 p2) 2.0)
9 F3 m6 X1 I+ o7 l/ Rmidp (polar p1 ang dist) ; D5 ^& w/ P7 C1 N
p0 (list 0 0)
2 h; f' E3 {- i8 Z5 Gpang (angle p0 midp)
, @% O% i' H) z/ F3 ypang2 (/ pi N)
- V7 t$ T3 N9 [8 X8 |8 a& w- I7 g4 ~p (polar p0 pang (/ DR 2.0)) ) m+ Z9 V# ?6 V3 D. i7 z
p1 (polar p0 (- pang pang2) (/ DR 2.0)) , h/ U8 A, @- ?
p2 (polar p0 (+ pang pang2) (/ DR 2.0)) : g. a @: d# ?
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
T$ _, T* N6 e6 lent3 (entlast); This is the tooth p-line
y7 K; Z7 @- e- r8 h$ z* X3 s); setq 7 x/ Y# U3 u' u. V2 U. z
(command "ZOOM" "W" p3 p1)
6 }' ] w g6 [(command "CIRCLE" "0,0" "D" DR) ;Root circle
3 u2 q5 Z/ b9 Q( C$ O/ [' e' Z% X(command "TRIM" ent3 "" p ""); Trim the root circle
) {7 n) U/ k. |(command "ZOOM" "P") 5 x. I: k, ^. w4 O$ o
(command "LINE" p0 p1 "") : I+ `: k2 n$ _; M" u$ U
(setq entl1 (entlast)) $ }9 Q7 l7 P" s
(command "LINE" p0 p2 "")
! h: u6 B" r1 t: o1 P(setq entl2 (entlast))
% f- g; X" c$ I6 C. w(command "TRIM" entl1 entl2 "" p3 "") . T# ^% o9 r) E- y/ N4 P
(entdel entl1)
6 U7 F# c9 s% E/ q# h(entdel entl2)
# s; ]) b# n$ h! Z' E+ O% j(entdel en)
) Y( c! T; h, H(command "ZOOM" "W" p3 p1)
& a5 W5 h, s* D- T" z(command "PEDIT" p1 "Y" "X")
4 _- k- H& ]/ x& B, c( J3 g(setq en1 (entlast))
- U* M2 }- h: s! \- V P(command "PEDIT" p2 "Y" "X") ) ]/ l# F+ o4 e- Y+ ]5 A
(setq en2 (entlast))
; _- o) C! x: Y* k(command "PEDIT" en1 "J" midp en2 "" "X")
" |4 @0 C. L5 S' X# ~/ ^(command "ZOOM" "P") 4 R f( I2 O0 W8 N4 N* @
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") $ F( {! M; n: Z- R) _4 W7 R
); segment
/ v. X6 n2 i" M1 I# o1 M
( ?) X+ w8 t6 x8 \(defun c:sg () + U6 b) [6 G" c& w! ]8 M7 z
(setting)
, t4 V0 I/ X/ n" A4 u: x(spurgear)
- D0 o* } m) L8 _2 l' s( U2 S q(resetting)
% g* m0 B+ q; O% a(princ) + L! v. N2 M( Q& H. {6 A
); c:sg 0 j4 z, A& A u4 G7 y, d
+ e' R! M; r. A* m/ D0 O# Y1 t$ S' }2 r(prompt "\n**SPURGEAR.LSP Loaded!")
8 T0 w& o; Q& L# D" C(prompt "\n Enter 'SG' to start") ' q0 }, M" m {& m0 V p& Q( g
;;;end suprgear.lsp
, M! G, X: ]: `9 c5 r- s打開CAD圖形后點(diǎn)擊“工具”菜單→AutoLISP→加載→找到自己所存的) T+ S, P1 C7 G8 j7 M0 C1 x$ y
".LSP"文件位置點(diǎn)“加載”、點(diǎn)“關(guān)閉”。在CAD環(huán)境下“命令”狀態(tài)欄里輸
1 d- `$ L$ ?1 V* J6 E& v* @入“什么”命令后才能按提示使用? |
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發(fā)表于 2007-10-20 03:42:53
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