有下面一段渐开线程序：
% U1 T0 B6 ]" x3 O2 f7 p;;;begain suprgear.lsp 9 G/ \+ _! _6 W% s; v9 F
;************************************************* # d7 C1 {& i) l( s% ^
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss / w' c |5 t$ _) w; N5 C2 Q
;------------------------------------------------- - P& b5 K0 v, S% f) B1 T
; This routine draws a spur gear using joined ' r2 G$ e' c7 z; b' Y6 T
; polylines. It lets you use any pressure angle . Z8 @1 s; @8 A6 X: \% [
; to design the gear teeth.
+ E0 G0 z! z8 _; p;*************************************************
8 H9 S6 ]& X6 p: c% ^3 ?(defun err (s)
+ \# |0 p1 w+ `! ^% { S7 q8 x2 L(if (= s "Function cancelled")
0 f' g/ n$ h6 p5 a(princ "\nSPURGEAR - cancelled: ") ; E' B+ N9 P/ h1 K9 e% Z
(progn (princ "\nSPURGEAR - Error: ") (princ s) 8 V1 h' P+ k, l: O. L
(terpri))
( D9 m* A( Y, h2 D7 U1 }$ w); if , v- w/ B; G' k O
(resetting) + A; T: @. m1 x- F# X4 |, g. V, i
(princ "SYSTEM VARIABLES have been reset\n") - a y) V* {) n" B" |+ @
(princ)
0 X9 \" ~& q% H1 r: f0 R9 t* w/ F: R' u); err 4 o4 _+ H' G( ]6 o# q6 V9 d
! n6 S7 S3 a5 j# F- O(defun setv (systvar newval) 0 v& J/ F/ w+ c# t( \3 f/ ^
(setq x (read (strcat systvar "1"))) , \9 Z* D4 I x" N
(set x (getvar systvar))
. |5 P2 c, X4 I) M0 H# g(setvar systvar newval)
" ?7 s0 Y- v, I' h" }); setv ' l. ~1 u* n A- _! M% s* {
8 J$ P& F" _% v2 [, l) N(defun setting () % D7 X1 X6 G7 t1 E5 w
(setq oerr *error*)
8 h5 o' h+ H+ W% K; i0 {* k(setq *error* err)
2 G( s! `1 ^4 |+ E" K(setv "CMDECHO" 0) . F+ G+ B- o5 r# i
(setv "BLIPMODE" 0)
9 }# F6 y' A# t4 H2 X+ t Y); end of setting / D( \8 o, I3 n
(defun rsetv (systvar) $ ?# R( V9 S( j3 S9 ?
(setq x (read (strcat systvar "1")))
3 F6 d( I0 R* b* M(setvar systvar (eval x)) , M) Q2 J5 a# _# R
); restv * k- ~& t' X! C* k
(defun resetting ()
- V& \5 Q* `# _" g( N5 ]6 J% E(rsetv "CMDECHO") " M+ n. Z. D) h
(rsetv "BLIPMODE") 3 u+ B0 r ` r1 s) s6 A
(setq *error* oerr)
( o6 H2 t. V" j' J* L); end of resetting
/ t/ F5 Q6 |( B' c4 G* j4 J2 g7 Y; {, N! I7 f& `
(defun dxf (code ename)
3 s0 O3 l7 e& `1 h: P6 o(cdr (assoc code (entget ename)))
) [7 h1 _# m. I9 G% n. _* s); dxf
3 r E# F. |. ~* p3 W
; K* W! u# U( d1 y8 h3 W3 o(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 + V7 h" O+ E3 m. U& E0 o
trimcode invent p0 p curvent linent linent2 ent2 p2) 4 h. ?- L% I/ U g% e1 S' w9 |- a
(setq D (getreal "\nPitch diameter: ")
6 p& h9 x( l* sN (getint "\nNumber of teeth: ")
( ~9 o' _& A. {- ?3 R% N2 S& jphi (getreal "\nPressure angle: ") 3 c1 r8 U9 |; ?% ^
phi (* (/ phi 180) pi) ; Pressure angle 0 l4 p5 A) M, W+ b v- @* f
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
; f+ n2 _8 m; i% `' S) |( }RO (/ DO 2.0) ; Outside radius / ]! N4 a/ e5 o+ u( p- E
A (/ D N) ; Addendum 3 |1 W$ y9 A$ o2 ?
B (* 1.25 A) ; Dedendum
& H% t# } L; m' [1 cDR (- D (* B 2.0)) ; Root diameter
7 k" M: M' }% W! BDB (* D (cos phi)) ; Base circle dia. 0 @" F: X) ^6 X; L
inv-plst (involute DB N phi);involute points : ]! R8 J2 ~% \: Z% }8 g
trimcode nil
7 U7 W6 d3 O5 }/ w); setq & u& ~/ o4 ]9 }% ~1 O
(command "ZOOM" (list 0 (- B)) ' t! Q8 N1 u. U" ~4 q7 p
(list RO (/ RO 1.5))
+ x) ~2 n2 `2 T: Q8 u); command % ~4 E; |0 M r3 r
(setq invent (draw-inv inv-plst)); Draw involute. ; }; N/ R7 z4 t: j% o' ^" K
(setq p0 (car inv-plst) 9 @3 c( `+ _# X" u* M# {# f9 \
trimcode (ext-trim p0 DR D);trim or extend 9 S0 o. E' ^5 }1 p
); setq ; the involute.
! d/ P& f4 y" d: ^+ I(if (and trimcode (= trimcode 0)) 2 {. t! [; D5 O: T$ \8 u& t7 }
(progn ; Joins the involute to the extension.
% O, S# k- T; K6 {& e(setq p (list (/ DR 2.0) 0)) . p9 X5 _: Q" v: X9 o( `
(command "PEDIT" p "Y" "J" invent "" "X")
' B) @: G7 X4 M; P* f% |# P(setq curvent (entlast)) # f, h: b! \* e& k% f
); progn ; s5 E, q3 ]5 R# x- z
(setq curvent (entlast)) : B/ r! o/ {( A& d! M$ J2 Y$ q% Q
); if
" a) ?' P5 @, g, v(if (null trimcode) (setq curvent invent))
) e- P- R; N5 |4 r$ I(setq linent (draw-top-line D DB N RO)); top line. 8 v: W" N) v: w5 c. H
(command "COPY" linent "" "0,0" "0,0")
8 Y! H* X P3 z/ B4 N(setq linent2 (entlast)) . H* Q* u3 b4 o9 ? }* U% d( P
(setq ent2 (mir-it curvent linent)); mirror curve
9 Q7 n$ Q, W# v+ ^7 h2 D(command "PEDIT" curvent "J" linent ent2 "" "X")
7 G/ r% S/ d8 x6 D F(segment DR N linent2) ; Finish the job! * ]$ ^5 y- b- g7 e; ^
(setq p1 (list (- RO) (- RO))) / `, ^( y" ?- D- K; _# n, N9 G: @
(setq p2 (list RO RO)) ! j9 I" {" n- ]: ]/ b
(command "ZOOM" p1 p2) 6 A) g7 m h e% ^2 w
(prompt "\nConverting to POLYLINE, please wait...") ~/ @7 H, e. N2 t6 f
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
: o9 o& h* C0 |" i% s8 S(prompt "\nAll done!")
6 M! k+ \4 @( V8 o1 y7 `1 _! g% ~); spurgear ( E- ]" T- y6 i# s
_( [7 Y! N# s(defun involute (DB N phi / numer denom frac theta2max ) s& p4 T; B" e1 A7 J+ x7 V
thetamax theta-inc theta plist RB xval yval p)
2 N9 r/ s5 f. `" z8 F, T S1 M(setq invfact 3)
: t+ j* e6 \: v! }0 H3 E3 ](setq numer (+ N 2.0) " C8 s; H- U5 J* Z' F5 k' Z
denom (* N (cos phi)) , E, U; D* {$ S5 W/ }% X# b2 Q
frac (/ numer denom) / }, d: X/ l# \/ B4 H
theta2max (- (* frac frac) 1)
}# Z& m8 ]! Dthetamax (sqrt theta2max)
# B6 ^: u5 d& T( T& J3 y5 M& f- Q5 Gtheta-inc (/ thetamax (float invfact))
! I0 D" s: {% m- e0 ttheta 0
2 K6 ]& g( z, C! [plist nil 5 i+ f$ L1 C& o) {/ v- _* G6 f
RB (/ DB 2.0) ) r y5 @) h7 I
); setq / O0 x7 c S% v
(repeat (1+ invfact)
+ Z$ w: U# o& i5 z) z5 J(setq xval (do-x RB theta) 5 R2 ^0 \3 H7 U$ G K
yval (do-y RB theta)
3 W) v, K4 U0 ]( Np (list xval yval)
8 O6 W9 d) H: t( Gplist (append plist (list p)) # G) S% y4 I& F _
); setq
* ]6 t" W& k% L- Q/ {# T(setq theta (+ theta theta-inc))
. ]7 _: V$ w# M3 }, c1 O); repeat
- F* ^$ u0 _' D1 M& S( Hplist
* W6 z; v2 Y, z& @); involute
4 T6 P; P% P8 G+ E) V9 p( J) Y; ?! `' B; i0 V7 @; Q$ W$ w! E
(defun do-x (RB theta)
* k6 V7 B( T/ {" z(* RB (+ (cos theta) (* theta (sin theta)))) & y+ y& h. V3 ~ D, j
); do-x
- e1 e1 E* V3 I% v
* _2 O4 N2 A" Z# B ~/ i(defun do-y (RB theta)
5 M! @" N* y/ O! X) R' q(* RB (- (sin theta) (* theta (cos theta)))) 7 X8 n$ I" s' ^/ b9 |" f" B
); do-y
4 g0 y, X0 T6 A! R1 m
$ {$ u7 i& C* N( j* e' G ^(defun draw-inv (inv-plst / dirpt plist p) 4 q- k0 T) `) n. K1 }( E) d! L( V
(command "PLINE" (nth 0 inv-plst)) 8 M5 g( F5 l3 C* x+ C/ ]+ S
(setq dirpt (polar (nth 0 inv-plst) 0 1)) $ d: S' y( R9 z; |% t
(command "A" "D" dirpt)
" Y& H: i9 K h' A, P# c/ ~(setq plist (cdr inv-plst))
) I! n* T% {+ J9 q) Z) Z(foreach p plist (command p))
5 l, E* S. v8 L0 n' w" J(command "")
2 |' V" |1 T% P# b' ?; _(entlast) 6 M* u) Y6 a) d( X/ J- v
); draw-inv
9 E1 a# U7 _" z: }( X" k
* w* y0 j) w" D; g m(defun ext-trim (p0 DR D / trimcode dist endr)
2 ]+ B) |" T( [( r4 d(if (> (car p0) (/ DR 2.0)) ; Extends the involute
& T- i1 |' o% q( X8 o(progn 1 ~$ I, i* {4 V
(command "LINE" (list (/ DR 2.0) 0) p0 "") 8 J. T. ?7 d/ O6 g7 a r
(setq trimcode 0)
( p8 p- i$ q5 m2 l); progn 7 F! y v4 Q7 D
); if
" `8 a& B6 t% n$ J" \* b& W: f(if (< (car p0) (/ DR 2.0)) ; Trims the involute # z+ O' `4 R$ b* _3 m- h, T4 O5 ^
(progn 4 X+ o/ L8 B b) P3 Q7 f
(command "CIRCLE" "0,0" "D" DR); Root circle
1 R! ~3 U8 d* q5 J' v3 Y(setq dist (- (/ D 2.0) (car p0))) * e- ]' q: s( r3 D Y9 X5 b
(command "ZOOM" p0 % h/ l, _# q) n8 c/ ?
(polar p0 0.6 dist)) 5 X$ Z$ j3 w3 z! c1 Y9 g: D
(setq endr (entlast))
# v6 y$ ` H' z" q0 W/ P- U(command "TRIM" endr "" p0 "") ) c4 }& Z# u3 ]- x, r# e
(command "ZOOM" "P") # M: C1 G; S, l3 ~; G
(entdel endr) 6 H: Y5 n7 S c3 U
(setq trimcode 1)
% ^) {. H8 b' I% `7 X7 {5 r); progn 4 S2 F( S: o1 y7 F
); if
* l! p, E7 F$ a: u' I$ G& `trimcode 6 x E& ~; |3 `% g9 c2 N
); ext-trim ; [6 |9 ]: w% Y; b% N
" i; I1 s2 K' b4 Y& o0 O
(defun draw-top-line (D DB N RO / theta-p xp yp alpha 2 `; Q ^: q* A/ M2 m
beta tang angend inv-endpt lend) $ T" p' ]. j; K+ o: u" ~
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) / z+ O3 N9 F$ D4 e3 O. T
xp (do-x (/ DB 2.0) theta-p); This section ! ?( v0 M t. Z6 l$ _
yp (do-y (/ DB 2.0) theta-p); sets up angles 0 F- L, ?: b+ r# H8 V& G& @
alpha (atan yp xp) ; for drawing a
0 e$ r, @+ }6 E) f9 Sabeta (angle (list 0 0) (last inv-plst)) - A& e3 a" ?+ @+ v4 i& Q" z7 \
beta (- abeta alpha) ; line across the % G8 }" P0 Q. B4 H
tang (/ pi N) ; top of a tooth + b$ f' u Y o/ `/ y9 N) m
angend (- (+ alpha tang) beta) + h: r: S1 g3 r. g1 z
inv-endpt (last inv-plst); This also creates
6 Z a4 s: }+ r8 p2 Elend (polar (list 0 0) angend RO); the tooth 4 e, F6 K. F2 `7 C: u Z5 N# L5 X; K
); setq ; thickness.
H( Y1 l0 j( @" ?2 v) z(command "LINE" inv-endpt lend ""); Draws the line
- K" V, S% E2 l5 E/ L8 j' N(redraw)
; R8 J+ b3 e* R(entlast) ' P: m: i8 @1 d0 U8 w" w% X
); draw-top-line 7 O9 ] p; V+ B4 j% J
) R9 \$ u4 n S
(defun mir-it (cvent linent / pt)
4 w1 C/ J4 D6 |; W5 ~(setq pt (dxf 11 linent))
. M% A- s, e% m/ G/ d(command "MIRROR" cvent "" "MID" pt "0,0" "") 5 E8 C" r$ s7 j. w2 F
(entlast) 9 T" s, w3 H# e% N* ~0 D
); mir-it
, b8 M; j4 E5 ]$ u" x/ n5 g z7 k( O9 Y1 Q
(defun segment (DR N en / p1 p2 ang dist midp p0 pang 7 K' z* n5 z& }+ c
pang2 p p3 ent3 entl1 entl2 en1 en2) . s! o) j% L) C8 T" i
(setq p1 (dxf 10 en)
7 |+ v* {8 h1 C' \5 dp2 (dxf 11 en) h, i% A/ b, {) P5 p2 T7 N: I& a
ang (angle p1 p2)
7 F$ f2 @% K1 [+ E, m( idist (/ (distance p1 p2) 2.0) 8 P. k! ~2 h) p/ Q7 c( P
midp (polar p1 ang dist)
( [8 i7 R& O$ E8 S( ^1 K: Hp0 (list 0 0) ; k8 L |* T! T( o
pang (angle p0 midp) % R1 d6 M2 M. h6 Z' k
pang2 (/ pi N)
W' n2 h2 G& \! z6 G1 V. q8 op (polar p0 pang (/ DR 2.0))
* W3 W: J3 Q- t" \! ]p1 (polar p0 (- pang pang2) (/ DR 2.0))
& g! t) g% A1 g Zp2 (polar p0 (+ pang pang2) (/ DR 2.0)) ?, w6 w$ b; D+ ^8 z
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) : ]- c5 m1 g# [+ c" ~, n0 n
ent3 (entlast); This is the tooth p-line : m$ ~. x8 M: q4 X. Q; u
); setq 5 o# c. H7 `. v/ e0 F
(command "ZOOM" "W" p3 p1) ) y7 ^; t0 \- F4 `% E+ x
(command "CIRCLE" "0,0" "D" DR) ;Root circle 7 [% t8 c8 |5 L- k$ e/ {
(command "TRIM" ent3 "" p ""); Trim the root circle
- y5 \9 U6 T; b1 \(command "ZOOM" "P")
' E4 d! o2 L4 v3 Z" B(command "LINE" p0 p1 "") % I& M0 L* C1 [2 f: ]1 |3 p3 d
(setq entl1 (entlast)) + o/ P* J A) Y
(command "LINE" p0 p2 "") * L: {- M1 L1 N* c6 u# z% t
(setq entl2 (entlast)) 3 B, s2 ?! |1 e) R
(command "TRIM" entl1 entl2 "" p3 "")
6 v; ]! V, G# [& Q7 h$ O& z) }' [(entdel entl1) - B3 {( M5 Y2 a- G
(entdel entl2)
4 Y: m5 d3 h; X' o# H! l: H/ u. R(entdel en)
7 B# r1 q+ v9 E: i8 c1 u$ d(command "ZOOM" "W" p3 p1) 5 d. t2 D f; O6 i9 D3 c
(command "PEDIT" p1 "Y" "X") T; n0 b f+ u2 P# a
(setq en1 (entlast))
- {/ L# V0 p) T7 a5 o( s(command "PEDIT" p2 "Y" "X")
. M& ]# d+ d: O: w, O* \, X(setq en2 (entlast)) 1 `7 q% u* H, m- O! D7 ^8 b# L
(command "PEDIT" en1 "J" midp en2 "" "X")
5 J$ j+ W1 [. U) |2 o4 \(command "ZOOM" "P") 1 e, @! M4 B, Y
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") + t! [- Q# d* d' u
); segment
- m! u# g ~2 L3 ?5 S7 ~& ?5 S( U, \) K+ H' W8 u6 }0 ` O
(defun c:sg () 2 C- l E c+ n& g J& U( c
(setting) h# j. E3 w" G; g3 ^4 [9 G' N
(spurgear)
4 F& F4 A/ t% ?2 n(resetting)
9 Z4 P. s& Q+ H; E7 W; _/ C(princ) + u1 U( ~ n( K' k
); c:sg ! n% X( M3 ]3 @" V) l2 p$ V
) M- {- A2 E' C(prompt "\n**SPURGEAR.LSP Loaded!")
* P6 C! j$ _: \5 p) v* ~7 N0 a! P( T(prompt "\n Enter 'SG' to start") k5 v& D, v3 j6 R6 q
;;;end suprgear.lsp/ @- e. u9 S$ W4 U+ F) F$ s" R% p% D
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
) T: P0 Y) N' T" `" D".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
i9 X, X5 ?" ~" k入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
