有下面一段渐开线程序：
+ o( f6 S9 m6 F5 K;;;begain suprgear.lsp
; ~7 D6 m, r; \5 a% {8 A4 c;*************************************************
2 W! J; z1 ^2 n' `$ E6 };SPURGEAR.LSP - a lisp program by Tony Hotchkiss
+ s% z6 U) ]( ?" a; ]5 u;-------------------------------------------------
1 l# K$ s( _; E! j$ h5 E" D; This routine draws a spur gear using joined $ A1 ]: b5 v) |4 \$ K' F
; polylines. It lets you use any pressure angle
) x# K8 V! M+ Z( g/ s G; to design the gear teeth. " k Q q6 [+ I* l& p/ | T
;************************************************* 8 U# X2 p0 F' z# H" |
(defun err (s) % M- Q/ F7 ^. |6 [
(if (= s "Function cancelled")
1 K& r4 K/ c2 i: `' Q(princ "\nSPURGEAR - cancelled: ")
0 m' K( f4 N; K& P( b2 P(progn (princ "\nSPURGEAR - Error: ") (princ s)
* y$ j6 K- `: i) ]4 \: O/ ~(terpri))
, P3 f2 m5 j. K) V9 S# r); if
! ^# s& I. ~- f$ v0 x$ h(resetting) ( x( N& ~4 c) |
(princ "SYSTEM VARIABLES have been reset\n")
1 U3 p" Q% h S' M# \1 i(princ) ( r, _& k8 v- `8 i
); err
5 W. J' M! F: `; {" d+ Z' h2 R& Y; R0 D* r
(defun setv (systvar newval) * j! j6 S9 L; d: R- L+ J: J6 O$ x
(setq x (read (strcat systvar "1")))
; h* I% V9 E, a5 f" a% D a(set x (getvar systvar))
# m e& u' l" g(setvar systvar newval)
+ @' i1 l1 g7 N# m' B" Z5 x) k); setv
9 ~% V# e4 X5 r7 ?( B# O! y" K5 Y' ]' U# X u# D( j/ w# K
(defun setting ()
1 U$ x9 A& @0 u9 A) Q(setq oerr *error*) 9 U/ b# x7 N% N+ t& ?0 K
(setq *error* err)
9 Y/ U5 ^! q: g2 a" y9 W# g(setv "CMDECHO" 0) 5 ~2 W0 I0 K" ^, z+ K
(setv "BLIPMODE" 0)
1 Y; P ^+ o8 l); end of setting 8 {9 m' B/ E7 r) P% d: |! @
(defun rsetv (systvar)
* A7 Z1 e8 L6 J! O6 s r& W$ l(setq x (read (strcat systvar "1")))
9 I5 Z$ P0 ^0 v2 ]+ {. m(setvar systvar (eval x))
~# \/ |0 k: t/ X6 R, B( ]); restv 8 O8 d6 B* E0 t/ T4 F
(defun resetting ()
1 V( i; b: {: i' s( ]* r5 Q(rsetv "CMDECHO") ) u8 G* [5 |$ K& X( o+ h! b$ f1 W) y' o/ I
(rsetv "BLIPMODE") : A. {9 ?5 O; E! ]
(setq *error* oerr)
% B z4 f: r; x) `. A); end of resetting
, C7 C5 m) _) x1 M' J" ^- H {! {7 E6 L5 v; v( {3 k: ^
(defun dxf (code ename)
5 p+ Q) _$ ?# K8 {3 f(cdr (assoc code (entget ename))) # h# X& I5 @" K2 h
); dxf / q; u! u! P. I7 b
/ ]9 r9 F7 ^: }$ y& t(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
+ g2 P9 l! ?: p; c; K! mtrimcode invent p0 p curvent linent linent2 ent2 p2) " |* K8 @1 X( M/ F: y% R
(setq D (getreal "\nPitch diameter: ")
. x* V3 C( ]2 J8 A2 n3 kN (getint "\nNumber of teeth: ") ( Y- N# G* @% S8 H( ]; \6 e
phi (getreal "\nPressure angle: ")
4 C% E2 i$ M* \- o* u* f" Lphi (* (/ phi 180) pi) ; Pressure angle
) l4 z8 s0 j( S$ k+ n' F% zDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter & R2 t9 L$ Y7 Z8 l- Q1 w, x# p
RO (/ DO 2.0) ; Outside radius
9 B% P# \( h8 }: QA (/ D N) ; Addendum + \1 ]" l D3 w# E; ^) l
B (* 1.25 A) ; Dedendum 9 x6 j' {3 o' }) m2 B
DR (- D (* B 2.0)) ; Root diameter
( \7 T8 E/ J6 q9 I- v4 C/ QDB (* D (cos phi)) ; Base circle dia.
3 P8 p3 n8 `& {inv-plst (involute DB N phi);involute points
4 V) |3 _- t- P# Utrimcode nil & G; J" I. V2 J+ u
); setq
+ [. d/ E t- v' `3 D7 S(command "ZOOM" (list 0 (- B)) + k+ P+ B, p( p8 T0 s
(list RO (/ RO 1.5))
0 T" _2 l5 a8 c4 l9 _); command , D2 q( h9 I$ b0 R) D1 c
(setq invent (draw-inv inv-plst)); Draw involute.
% n5 e/ C$ S f3 h: g. ^(setq p0 (car inv-plst) $ o' |( L! F- x, l6 L
trimcode (ext-trim p0 DR D);trim or extend
; N" [! q( F5 u) g$ e); setq ; the involute.
t. }3 y+ H: w4 d4 j1 w(if (and trimcode (= trimcode 0))
+ q# q( p u; m(progn ; Joins the involute to the extension.
3 m7 ?4 [# Q8 ]; p(setq p (list (/ DR 2.0) 0))
" Z5 P6 Y0 R/ E! X, ^/ P(command "PEDIT" p "Y" "J" invent "" "X") 1 ]4 ~! }8 r4 h/ V! T* M
(setq curvent (entlast))
5 ]6 o# u3 v5 Q8 y: a \; }); progn 9 ]4 ^$ S7 c/ o, C# p( Q% h
(setq curvent (entlast))
4 Y+ r; J9 p5 O( F# E b* o6 Y5 M); if - {( y \* r& v& k. {/ f
(if (null trimcode) (setq curvent invent))
5 K) V. l: m- M, n: N) i(setq linent (draw-top-line D DB N RO)); top line. : T3 ~) W% t A5 g
(command "COPY" linent "" "0,0" "0,0") . p' Y. h& c2 D) E. R) |
(setq linent2 (entlast))
* ^2 k/ C3 D) I2 B(setq ent2 (mir-it curvent linent)); mirror curve
' r" J, L1 }7 ^! q: ](command "PEDIT" curvent "J" linent ent2 "" "X") : m& Q/ K) w. v4 S8 g
(segment DR N linent2) ; Finish the job!
9 ^7 F4 T8 r3 R. H! f8 v(setq p1 (list (- RO) (- RO)))
1 l. K8 t' X8 l0 l, `2 [9 X(setq p2 (list RO RO))
) O& `: m% r" o( t/ r- G2 d& K(command "ZOOM" p1 p2)
3 O8 Q, X" |' Z* y(prompt "\nConverting to POLYLINE, please wait...") 2 G& g* J; }# A+ t9 b- z
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
% ^- g: v$ U8 H9 ?" f1 }(prompt "\nAll done!")
) n8 W/ [% o: {% R! b5 r+ g9 l9 @+ d4 z); spurgear 1 e: n6 ] j& ^1 ~; v
9 U# N: g, v/ v7 Z- h G(defun involute (DB N phi / numer denom frac theta2max % G2 Y, K( K% u0 A2 ]0 G
thetamax theta-inc theta plist RB xval yval p)
% F) {& T+ n0 P3 A2 l+ l5 {/ X(setq invfact 3) : y& f# J) j, k u- ~# i6 I) y8 i
(setq numer (+ N 2.0)
; w* [. _2 L G, udenom (* N (cos phi))
; E( h0 Q6 j) H2 P M; h: lfrac (/ numer denom)
; M! i8 W) a8 i! T$ W& o8 atheta2max (- (* frac frac) 1)
' J' F+ ]# |$ v" F& Uthetamax (sqrt theta2max) & g/ y: [% B/ j3 {, z# \ l
theta-inc (/ thetamax (float invfact)) ; X' ^! _2 M& M' J' H; x) Y
theta 0
. V5 W% h1 J$ y+ {, r' H( h6 t; C% l" _plist nil 0 j$ n1 ]& s9 k
RB (/ DB 2.0)
8 a1 r4 m% ?8 w& n( e8 k); setq
0 @7 v0 n; |1 v5 H3 Z(repeat (1+ invfact)
+ @: G6 w" V8 M! P; a" o, Y+ [(setq xval (do-x RB theta) 9 x4 N3 H! U5 _9 }$ @
yval (do-y RB theta)
7 Q+ O' q7 v' h5 p$ n7 o2 |. pp (list xval yval)
5 o5 P0 r: H/ b+ h1 ~& Nplist (append plist (list p))
2 B8 D! |5 q7 \+ J7 a3 g" S); setq / w6 D4 P2 y1 ~
(setq theta (+ theta theta-inc)) ; w* R3 S9 Q: u) j
); repeat 7 N5 I5 a9 A) R( \
plist
1 o k* u) U4 x3 i); involute v( H$ r2 f$ ~' U1 C, u* t
0 m$ B; M9 p) v- `# G# P3 F(defun do-x (RB theta)
% V+ ^4 K* Y) f' i# j5 b(* RB (+ (cos theta) (* theta (sin theta))))
?7 O& B: Z k); do-x
" x+ \5 f' U7 Q8 g1 X$ y7 O
8 F. R& H4 l `* T; p! H(defun do-y (RB theta) 8 v7 i" g- N `) h( [: L) G2 s
(* RB (- (sin theta) (* theta (cos theta)))) 6 q* A+ X3 m0 j$ z1 z( _
); do-y
0 X2 U b% `3 l, L0 K' P0 B9 y! \. Y% C4 ]' W- s( L
(defun draw-inv (inv-plst / dirpt plist p)
# U4 s! i8 c/ L' m4 j+ h. v$ g(command "PLINE" (nth 0 inv-plst))
. C) {5 Y4 p( L$ M) t: y(setq dirpt (polar (nth 0 inv-plst) 0 1)) " a! X! ?) V( \" ?' B
(command "A" "D" dirpt)
$ S& K4 H( i) K, @9 N(setq plist (cdr inv-plst)) $ y6 d7 j# P. A
(foreach p plist (command p))
) j" T; k& F$ w1 D: ?+ |(command "")
9 d) m Q! J4 c) b(entlast) 1 t; e2 z/ n2 S! L: K
); draw-inv
2 [6 v" g& H3 @; p% R* z N: U+ \; E8 C* w* |" S4 l
(defun ext-trim (p0 DR D / trimcode dist endr) : m6 d4 D, `+ A2 t7 Y# N6 V
(if (> (car p0) (/ DR 2.0)) ; Extends the involute : _, j5 s8 l. L7 K. X% k
(progn * s; g; ^; m- H2 { r1 \
(command "LINE" (list (/ DR 2.0) 0) p0 "")
; N. g% T( {% B(setq trimcode 0) 0 o) }5 F) k- G; [$ ^: k R
); progn 9 O, H1 N2 o9 c. T/ q% d: r
); if # O: e3 Y: S( N( X
(if (< (car p0) (/ DR 2.0)) ; Trims the involute " g/ f% l+ q5 u [8 r' h3 M) j( ~# p) v
(progn
7 y6 h" w5 Z$ x9 f% ~4 q(command "CIRCLE" "0,0" "D" DR); Root circle 6 ^4 v0 U( |) E) E' {% E0 {3 o% n
(setq dist (- (/ D 2.0) (car p0)))
' j6 N/ T- g1 N' D( ` A8 [5 @(command "ZOOM" p0
! S8 a" @) Q1 `0 ~6 u4 k; i(polar p0 0.6 dist))
5 W( f' C6 p9 c' s6 @(setq endr (entlast))
/ n& N# Q1 t- j8 d& {2 N3 K& z(command "TRIM" endr "" p0 "")
! S6 ?; w$ [ { U% N& k(command "ZOOM" "P") ( J8 d8 d1 x0 p1 ~
(entdel endr)
$ ~" W8 r2 q3 {$ m2 B% |& s(setq trimcode 1) s! h7 U9 o x; b' l) ^, P' }
); progn b' `! S' K% h0 D8 S2 P
); if % o4 H& V) f; F! |- U7 |
trimcode $ t0 t0 l$ L0 ~
); ext-trim
8 q+ O3 F6 T/ N0 o5 q( s* J' M2 Z+ B
1 U+ b3 ?" g$ B1 s! C(defun draw-top-line (D DB N RO / theta-p xp yp alpha j2 j9 m4 g; u( I" W
beta tang angend inv-endpt lend) ! t" Y! e3 n O. b7 c4 o$ {
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
. C; F4 x. ?/ ~% J+ Z5 h# cxp (do-x (/ DB 2.0) theta-p); This section
5 d* d5 y2 T' Syp (do-y (/ DB 2.0) theta-p); sets up angles ( `9 S2 R) d% D: U6 D2 Q4 f
alpha (atan yp xp) ; for drawing a 6 L& m4 ?# ]' r- `( V0 ?
abeta (angle (list 0 0) (last inv-plst))
. F; Y$ K9 j% l9 m& h( } G$ e9 fbeta (- abeta alpha) ; line across the 9 C! P5 E4 X1 T7 O2 U' L+ `
tang (/ pi N) ; top of a tooth
$ C* s7 G! g- u% s! w2 @" Sangend (- (+ alpha tang) beta) . d# [' R+ F# B- i
inv-endpt (last inv-plst); This also creates
( W# [$ J% v1 d- U e4 v- Dlend (polar (list 0 0) angend RO); the tooth r6 P2 B, M5 _, J) e- r; x
); setq ; thickness. . O5 _: }7 l' ~) U
(command "LINE" inv-endpt lend ""); Draws the line ( x, A C$ v" R9 {
(redraw)
9 Y5 T, j+ V6 n(entlast) ( R1 I* T$ P9 e1 C* v; s
); draw-top-line 3 t- X& a2 ?& E2 U9 r! \
+ h; V9 A: c* ]+ d(defun mir-it (cvent linent / pt) 5 j' N7 |" E/ Z1 o
(setq pt (dxf 11 linent))
, P7 O( m) f8 M* a0 u(command "MIRROR" cvent "" "MID" pt "0,0" "")
' l# d' i8 D. M c2 V(entlast) ) y6 M& I1 c8 r6 \4 f: X
); mir-it
" q/ i9 v- b# x3 z
2 k; G' g( ~: [- c(defun segment (DR N en / p1 p2 ang dist midp p0 pang % F) j& h' J1 c8 u9 _
pang2 p p3 ent3 entl1 entl2 en1 en2)
' k/ K0 E; t r2 Z! I% E(setq p1 (dxf 10 en) ! h1 F1 w3 W& Y$ _ g
p2 (dxf 11 en)
; M8 B' l, H) Y- Q2 ^6 p8 X( F+ Y, hang (angle p1 p2)
6 o0 E' x+ u0 p& ?dist (/ (distance p1 p2) 2.0)
1 Y, P1 H% i1 @; l8 u p3 V% M; Gmidp (polar p1 ang dist) 8 R# `3 c0 ?! u) Y3 r* ~
p0 (list 0 0)
3 R) T* o5 g( q; M+ Gpang (angle p0 midp) " q* m1 n, I( p- f- R% C# |/ e6 b
pang2 (/ pi N)
a6 d2 q. p. L- fp (polar p0 pang (/ DR 2.0))
, ~8 \5 k& A/ ]p1 (polar p0 (- pang pang2) (/ DR 2.0)) 4 X" N' P' |1 z$ o1 M
p2 (polar p0 (+ pang pang2) (/ DR 2.0)) # f$ a" K/ P: C. o4 k3 C* f
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) 9 D: A" w" u/ {: s- O4 x2 W* K0 s
ent3 (entlast); This is the tooth p-line
' F9 b) \: Z4 z+ y4 Z- l5 Y); setq
. a' u0 `8 t! q+ N% U2 Z* p(command "ZOOM" "W" p3 p1) ' N/ p( o F) ?% r8 b1 ]2 T1 _
(command "CIRCLE" "0,0" "D" DR) ;Root circle * w$ `* l2 t: c! P+ u: @4 {+ A
(command "TRIM" ent3 "" p ""); Trim the root circle
/ ^' b3 v. X# J! L6 R! P+ G& Y(command "ZOOM" "P")
& S* ]% t! t9 J(command "LINE" p0 p1 "")
9 ^% A1 F, a2 A(setq entl1 (entlast)) 3 `% o0 f4 ~5 ^+ X) i0 l/ D
(command "LINE" p0 p2 "") 9 H* [( {2 T! A) r
(setq entl2 (entlast)) ) S, x6 c: s# s
(command "TRIM" entl1 entl2 "" p3 "") 5 c' q+ W: ?7 n$ o4 |" d4 c( B, o/ Z
(entdel entl1) # I, U2 `/ O% c: T4 p* l
(entdel entl2) 0 |6 ?+ F( B" i# u/ i1 x
(entdel en)
! ^$ L! ]1 U6 O(command "ZOOM" "W" p3 p1)
- F5 F% o+ d! D0 L1 H(command "PEDIT" p1 "Y" "X")
, a. ]. J; A' s! a8 h6 D# g5 _(setq en1 (entlast)) * b( J! |0 F' Y6 d1 a8 e
(command "PEDIT" p2 "Y" "X")
0 ?+ Y+ ?; W: [- _% J; ?7 ?(setq en2 (entlast)) : J+ p. v2 U, B8 E! i, L6 w
(command "PEDIT" en1 "J" midp en2 "" "X") , V' c/ h" K \7 y8 K
(command "ZOOM" "P")
: v; y/ z; [( M! Q0 x: _7 }(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
% B$ T6 |; b, o( j$ u# r0 h* S); segment
2 j1 R0 ~: @, o2 J+ E3 ^
! W# R. h/ w" p4 a( f6 ]/ W. S- H(defun c:sg ()
3 o0 G8 A& F- I. h ~+ y- u6 f' D(setting) + p K6 _4 ^! B* V
(spurgear) - [; _( S/ E; e
(resetting) - P: t5 D# M% l, P
(princ) . X0 J: C- J0 n& b( E1 E+ C
); c:sg
. z/ a! p, J: [' D: k0 Z% e
0 I& ] h. f* U$ J0 {(prompt "\n**SPURGEAR.LSP Loaded!")
, K$ G$ M2 e2 O/ ?% _4 v+ {: m( N(prompt "\n Enter 'SG' to start") 3 N- a7 D" Y# H0 n! H7 f
;;;end suprgear.lsp
9 s" |6 |' ^2 ~/ Y* ^; M7 t# l打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的# r5 h! A' G& l: A5 `9 M
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
" \2 {/ E: d# C. O- J) V! H/ r入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
