有下面一段渐开线程序：
5 H( v( n4 T0 X+ o3 T w+ |;;;begain suprgear.lsp
* I. I" m0 @- J% T/ S0 ?;*************************************************
' _3 Y+ T' s. x6 K% M;SPURGEAR.LSP - a lisp program by Tony Hotchkiss 7 \3 n8 u! _2 v; O5 k1 D) ^: j
;------------------------------------------------- * p( T2 ?% }- o: x1 w& _7 X
; This routine draws a spur gear using joined & J1 t* ]& H/ ?/ Q& ^) G3 w
; polylines. It lets you use any pressure angle 9 X. I( m4 l! |5 F% p2 K( P
; to design the gear teeth. 6 i0 i. ?# O+ O( P: T) X8 _
;************************************************* , y. k; e6 b- F7 r) e4 ~. Y
(defun err (s) ; j# s5 _8 L, p/ v0 v3 {
(if (= s "Function cancelled")
) j$ ~7 x) K, O+ r# `4 z(princ "\nSPURGEAR - cancelled: ") 3 V; |+ h$ H' m# G! u7 ]- `
(progn (princ "\nSPURGEAR - Error: ") (princ s) 6 m5 y5 X9 Y. f# v
(terpri)) * S0 e/ `- F3 R- f, g. t
); if
: X" c5 F3 f* a6 X. q, } K' x(resetting)
- J/ v( B6 x6 s4 i+ u(princ "SYSTEM VARIABLES have been reset\n") , Q& m( @3 D, t; b
(princ)
( p. a3 ]+ g3 K% V5 x( E); err ! q. l; Z0 M. |6 `
o2 X G$ p' t+ ~! ^
(defun setv (systvar newval) 5 t$ u; P# h6 i+ G
(setq x (read (strcat systvar "1"))) $ X& ?- ^& _5 a' ^( F3 }) O5 @; }; k4 Z
(set x (getvar systvar))
& L P' L/ L/ n% v, @(setvar systvar newval) 3 r; R6 Z: L1 T2 S
); setv ' B, |# ?( k5 E( R I, K
( O7 b, Q+ X8 @; v8 I+ m5 Q* f
(defun setting ()
. C/ S$ q$ w$ I8 _(setq oerr *error*)
# T+ E& V! \! l2 N" b& G& @(setq *error* err)
5 C$ T0 o# n# e2 f$ x( N1 o(setv "CMDECHO" 0)
3 W/ u' \6 w6 k3 s) G7 _; K% D(setv "BLIPMODE" 0)
* w* D O7 Q8 w# }) [); end of setting
1 k3 {2 B8 K" i5 U: _(defun rsetv (systvar) 9 P, K$ W. l" b/ B, X! L
(setq x (read (strcat systvar "1"))) 8 B5 S2 c$ k2 g7 s3 [7 m
(setvar systvar (eval x))
) T( Z2 B, A: m& G: d" [); restv
2 I* r6 K; {$ A7 R5 c4 S(defun resetting ()
9 U% |3 K% }, g, ?" m7 G; B(rsetv "CMDECHO")
9 v; Q* e6 p c/ |, G(rsetv "BLIPMODE") 3 T# W8 K; @, F" T! q
(setq *error* oerr) # y0 v4 p7 \+ @+ t1 d* Q4 g
); end of resetting : c7 d; \# z0 V( |9 v
# G, J; I* D- E; T, c6 U1 n9 d3 P
(defun dxf (code ename)
/ f2 B' M' ]7 [; z; v8 F& R6 z( L* \8 I(cdr (assoc code (entget ename))) ' q- q6 i; A0 ?; B
); dxf
$ W4 |0 t! ^1 q& l! p2 B4 A" O2 t
3 j, p Q, @, D/ F(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
* _; h# [# S; u$ q( d2 Itrimcode invent p0 p curvent linent linent2 ent2 p2)
9 {2 A/ Y% k: Q# M) M(setq D (getreal "\nPitch diameter: ")
" \# C/ ]& _' D |' qN (getint "\nNumber of teeth: ") o# B- {% C% k, w0 T+ w/ H
phi (getreal "\nPressure angle: ")
! V# ~9 `+ g) | q5 y$ p# `phi (* (/ phi 180) pi) ; Pressure angle ) U: `8 ^3 E' Z: s- W3 H/ v8 Y' H
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter 3 n: I: ?9 z) F" |7 f
RO (/ DO 2.0) ; Outside radius & o! O3 ?) H8 I- x1 S9 ?* m! I
A (/ D N) ; Addendum
1 O' Q8 ~) }2 I+ cB (* 1.25 A) ; Dedendum 1 K% _) u) [4 {! y" H- h3 ]: e
DR (- D (* B 2.0)) ; Root diameter
# z6 L9 t3 l6 L6 Z3 n f: w2 @DB (* D (cos phi)) ; Base circle dia. ' B% u3 m p2 Y, I1 S# [0 K
inv-plst (involute DB N phi);involute points
3 ` d8 Y, s1 o- i# H! \: Q) vtrimcode nil
' M: f1 X3 t# i5 F* x5 O, X/ j( y4 R); setq
( L& A' E B: C6 K f8 y(command "ZOOM" (list 0 (- B)) 7 N' l( f' @ s+ z+ {9 S, [. T
(list RO (/ RO 1.5))
, K" m3 ?, Q( u" f8 E) j); command 2 t4 a6 H" a, m* t7 z4 r
(setq invent (draw-inv inv-plst)); Draw involute. % H0 r9 X: \" k( m7 w$ |
(setq p0 (car inv-plst) 6 K. G- ~6 L; K5 r- O% }" W- Z
trimcode (ext-trim p0 DR D);trim or extend
3 z0 {7 T/ ~$ C); setq ; the involute.
5 `4 ?1 o- K' c, X. \/ J(if (and trimcode (= trimcode 0))
. L! M4 L: {$ {+ Q/ O(progn ; Joins the involute to the extension.
, L. R$ a$ A6 V9 b8 h0 m' t, W(setq p (list (/ DR 2.0) 0))
5 q& ~& ]( M% [& @3 Y a/ f7 O(command "PEDIT" p "Y" "J" invent "" "X")
" N& }( j+ ]# X& X+ S% {& j(setq curvent (entlast)) 7 l$ \9 @. p: y5 @2 T7 f9 m
); progn 2 o# i: T1 x- i) y
(setq curvent (entlast)) 0 I* ]. M7 P2 Y
); if + u& j' `9 P! T
(if (null trimcode) (setq curvent invent))
6 x1 I: L3 Z( _$ y. ?# u( v3 i2 ](setq linent (draw-top-line D DB N RO)); top line. : g) m2 j, W2 D. J8 m
(command "COPY" linent "" "0,0" "0,0")
& i/ H' |) d/ {(setq linent2 (entlast)) " F- c, k+ v+ R
(setq ent2 (mir-it curvent linent)); mirror curve [, S4 {0 Z4 g1 `2 s
(command "PEDIT" curvent "J" linent ent2 "" "X")
% t8 w) ~! P" |& h% l0 S' h(segment DR N linent2) ; Finish the job!
6 F. e- j* A2 h(setq p1 (list (- RO) (- RO)))
! y/ b k3 F2 F0 D. \' k(setq p2 (list RO RO))
5 \* m8 o% B. `' |$ z2 T; s/ S(command "ZOOM" p1 p2) * L* o b- _7 L+ I: P
(prompt "\nConverting to POLYLINE, please wait...") + R @; S' A9 u
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
" V+ _( i4 [' [* N(prompt "\nAll done!")
2 Y' `+ r5 a4 ]); spurgear
) b |6 Q' J i) Q2 e$ [
: M9 H7 f% n5 V6 F. d& s. K0 I(defun involute (DB N phi / numer denom frac theta2max
) S# `/ E- T2 f$ _thetamax theta-inc theta plist RB xval yval p) . Z# m9 y8 D( p! B
(setq invfact 3)
. ^# ^. M5 I( Q( }6 ^, V$ C(setq numer (+ N 2.0)
, h$ h+ A; R( @. Sdenom (* N (cos phi))
/ `! O2 r1 d3 G! Ofrac (/ numer denom)
- [% g- D% ?% |" T$ u% Z ]# Ktheta2max (- (* frac frac) 1) ) I! R* g: k1 p; L5 G
thetamax (sqrt theta2max) 4 d( p) o1 N5 g% ` O
theta-inc (/ thetamax (float invfact)) , g) f4 @8 m& U4 V$ Y
theta 0 5 u. i- X* e/ P4 q) `* ]/ X
plist nil
$ G& O: O# y' I; |! uRB (/ DB 2.0) 7 ^9 |! Y# x( a5 ?& \& O
); setq - m; m3 b6 S" l3 {
(repeat (1+ invfact) $ e `1 V$ Q/ p) |- n
(setq xval (do-x RB theta)
# B4 L9 \4 b0 @2 D/ Nyval (do-y RB theta) Q" }" m% W# A. s/ o4 U
p (list xval yval) i& c0 S1 ]1 {
plist (append plist (list p))
; Z; p) V' h0 ?8 {7 J); setq 1 }% C$ y+ G0 }+ R2 O! \8 `
(setq theta (+ theta theta-inc)) 0 C' A( j& j9 @2 U% L
); repeat
8 I) |4 H$ k' V9 i `5 g" G0 F( Iplist
4 Z, v. ]$ q y' U; p2 F); involute
' v2 C( F: S, q) J
6 J3 L3 F* m. N1 c(defun do-x (RB theta) ( b$ j3 N' U$ w
(* RB (+ (cos theta) (* theta (sin theta)))) ( j8 Q) M- W6 h5 l) k
); do-x
/ G1 P; X0 F! p2 _
# U7 G; n: s8 A/ S/ [* f(defun do-y (RB theta)
6 X- c( D {- m" p(* RB (- (sin theta) (* theta (cos theta)))) / H0 ^; W! r- A L2 e
); do-y ; ~* L Z2 k" ^2 A1 S# v! x
' s6 m9 V* s- r2 U8 v! F(defun draw-inv (inv-plst / dirpt plist p)
c E: u" P/ _$ j. b: }(command "PLINE" (nth 0 inv-plst)) / ?! U# G0 [( x' v- N/ o# l6 _. w
(setq dirpt (polar (nth 0 inv-plst) 0 1))
5 i: f, z/ p7 D+ \(command "A" "D" dirpt)
9 k+ {0 a7 f, S3 N. p(setq plist (cdr inv-plst))
3 ~# X# q' T5 k6 T(foreach p plist (command p))
0 N9 {, j' g2 L- q(command "")
' Q$ t: i4 n" c7 f1 R0 S(entlast) * p2 D6 d0 y% r6 X% a, k
); draw-inv
9 o& L- O& T/ K+ `& Y$ J! p
( [+ j6 f/ P C6 O(defun ext-trim (p0 DR D / trimcode dist endr) ( o3 F, n. Q2 H
(if (> (car p0) (/ DR 2.0)) ; Extends the involute
* ^) ]0 t1 T0 p(progn / b$ p3 j! Y0 c
(command "LINE" (list (/ DR 2.0) 0) p0 "") 3 E2 l! H1 l+ Z5 K/ {
(setq trimcode 0) 7 t/ |# o+ k" F) S6 }7 X
); progn * p8 l! W4 c% m) _1 u5 D' a
); if
2 U) I; v1 A( n. ]' B& R, k(if (< (car p0) (/ DR 2.0)) ; Trims the involute
U# m" ?5 S9 R2 d' d. H- s% r(progn 4 w9 Y. g, D& k. R; l9 {9 r" R M
(command "CIRCLE" "0,0" "D" DR); Root circle
9 @3 `5 O6 m A. r0 a(setq dist (- (/ D 2.0) (car p0)))
4 r8 ^ O! K( |9 d3 F9 g% W(command "ZOOM" p0
2 O) c4 B ^1 d% l(polar p0 0.6 dist))
0 U2 z0 \; t9 T/ L* C+ _. I. K(setq endr (entlast)) % O, {! G* V% C7 S4 ]3 G0 g1 Q
(command "TRIM" endr "" p0 "")
) t9 W2 p3 L+ s7 C( z, ?(command "ZOOM" "P") o9 d% p! z/ j: T0 p% h @ Z
(entdel endr)
# W+ r: K( S! P(setq trimcode 1)
* @5 t+ w7 O5 b8 g2 }# s8 y3 ~); progn
/ E" o4 W( F! Q0 n); if
* u" n& ]! D8 p7 m! W. ?# K+ B4 x {0 Gtrimcode
0 ]8 E# {: p; H); ext-trim 1 B; z% @. D3 I
, V+ ^5 ^7 w% K+ s% l: m% Y6 j) Q
(defun draw-top-line (D DB N RO / theta-p xp yp alpha - [8 V- s' Z) R6 G
beta tang angend inv-endpt lend) $ d5 R: m, {/ e ^& F4 X
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) / [4 r0 H; o5 E! {
xp (do-x (/ DB 2.0) theta-p); This section ( I% u( K+ S1 P
yp (do-y (/ DB 2.0) theta-p); sets up angles 7 c( G+ T6 O1 @3 Y( `
alpha (atan yp xp) ; for drawing a
- G4 k1 h4 x4 N( a0 [& mabeta (angle (list 0 0) (last inv-plst))
S9 P0 h. n/ B' X lbeta (- abeta alpha) ; line across the
0 o% G6 v* M) |7 vtang (/ pi N) ; top of a tooth 3 x( ^. r2 e. S
angend (- (+ alpha tang) beta)
/ V- a" \- }3 U7 [4 yinv-endpt (last inv-plst); This also creates ; a7 S1 ~: f4 @& ?
lend (polar (list 0 0) angend RO); the tooth
R( [* L( `) y* i7 e3 _ U); setq ; thickness.
) G5 d9 ?+ Y- j- X3 ^4 `( y+ X(command "LINE" inv-endpt lend ""); Draws the line
5 o1 a" C& M2 W(redraw)
6 S% J1 j4 V7 h(entlast) 1 f8 z: H1 u4 W9 ~4 U3 ^( l( B& O
); draw-top-line : o# j4 I8 u: P( s* ^# p1 u
" s9 ?& t- q/ R2 U+ ^5 ]) H6 T
(defun mir-it (cvent linent / pt) * t- R0 z+ @/ w' U
(setq pt (dxf 11 linent))
, `5 c1 }$ } o(command "MIRROR" cvent "" "MID" pt "0,0" "") / e* V6 E; d# g) o0 j1 D
(entlast)
* H; P3 W! p1 `# g); mir-it
; Q/ ]7 G; r, |- I6 m4 V$ F
. Q; e ], \5 ?; {* j9 U2 D5 ~' Q(defun segment (DR N en / p1 p2 ang dist midp p0 pang
2 W4 I7 L: Z0 m; Wpang2 p p3 ent3 entl1 entl2 en1 en2) 2 V9 w: k0 F! w/ G6 J& h
(setq p1 (dxf 10 en)
0 {5 o3 x6 x" A. s) ^- h. Z' Ep2 (dxf 11 en) 0 O C1 d6 `% P( n
ang (angle p1 p2)
: O4 y- G( u5 p4 M5 D6 j; }dist (/ (distance p1 p2) 2.0) 0 p2 v5 u$ n( ~, R0 a9 K/ }
midp (polar p1 ang dist) 8 a, T% K( h. f3 @& y' V
p0 (list 0 0) . h/ `1 J' ~; }/ z& B8 Y
pang (angle p0 midp) 5 q5 {# W1 V9 m6 e! B% }$ X! K! \4 t K
pang2 (/ pi N)
7 ~5 F7 f" ]4 g$ V* Pp (polar p0 pang (/ DR 2.0)) ( }: Z3 w/ Q" O3 Y
p1 (polar p0 (- pang pang2) (/ DR 2.0))
8 a+ c5 C! m5 n1 J9 E. ]p2 (polar p0 (+ pang pang2) (/ DR 2.0))
$ Q. e' V4 F; o4 h- x3 Fp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
/ Y$ G4 K' A, _" Q9 _* d a2 D6 ient3 (entlast); This is the tooth p-line
: y5 ~5 ~2 p% @- o); setq
* m* h# b/ k, c) l" t(command "ZOOM" "W" p3 p1)
% S5 d1 C( n9 Z& W. G(command "CIRCLE" "0,0" "D" DR) ;Root circle
1 M2 q# b1 a& T3 K# N(command "TRIM" ent3 "" p ""); Trim the root circle & w! o+ ^/ n- z1 W
(command "ZOOM" "P") / P3 F5 N4 q, z1 D& X% E
(command "LINE" p0 p1 "")
8 u+ P/ \1 O9 g(setq entl1 (entlast))
& ~; x6 q* x( c) A/ r(command "LINE" p0 p2 "") . K; `* b( d( M: Q& K# F
(setq entl2 (entlast)) ' \! E& [/ h: p
(command "TRIM" entl1 entl2 "" p3 "") - r- [/ Y1 V% J0 O" S
(entdel entl1)
# z$ D3 m0 _; {9 s. W( I(entdel entl2) 7 S: f' X. K9 ]6 b
(entdel en)
* H' f1 k6 B' \3 I9 W& A(command "ZOOM" "W" p3 p1) , r5 V7 H, ^/ L; S* J" E' @
(command "PEDIT" p1 "Y" "X")
4 D7 [4 o' M7 w7 C: P& ~ p! @(setq en1 (entlast))
3 A2 f0 R( h p+ z" N$ z& r(command "PEDIT" p2 "Y" "X") / z2 d, P. x4 s3 \
(setq en2 (entlast))
1 g, K' O, A7 s& D7 Z! f4 F(command "PEDIT" en1 "J" midp en2 "" "X") ( I" M3 r, w3 b, X
(command "ZOOM" "P") % t, B6 X# z. J. M! ?/ u2 S8 d! b1 O o
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
Z' y6 W7 Y( I); segment
/ \3 R. T7 i; H3 z( |+ Z3 C2 w8 w1 o1 h6 G
(defun c:sg () - u! c. P. B5 L- D+ Q& W
(setting) ; @* t5 Z% q* f
(spurgear)
; J. G) T8 [# P) q- V& [(resetting)
) x8 H$ D$ Q5 p(princ) # X- \' d2 g+ V( o
); c:sg
% u' X" t8 ^1 L# z, [$ x0 P( ^% c! F
(prompt "\n**SPURGEAR.LSP Loaded!") 4 o9 S/ x5 e8 Q u
(prompt "\n Enter 'SG' to start")
2 F7 s4 ]& X( l, h( Y) m% V2 f;;;end suprgear.lsp
' t1 b# h+ U; Q- S打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的4 _: P. O! S7 {% |- J& A0 l
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
/ U& ~" L- a, R/ G+ ^' I入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
