有下面一段渐开线程序：7 r- [. M) x6 h" t; S! i
;;;begain suprgear.lsp
8 o; R% w0 t% J( ]* e' m- [;*************************************************
, C- h+ g- Y7 p7 |; U" S" t5 q;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
. X' y( T" K( M6 z+ b;-------------------------------------------------
p5 L1 X* r0 ]- z ~; This routine draws a spur gear using joined
1 p( m8 j9 g3 \; polylines. It lets you use any pressure angle 4 j% z0 V2 A# A: ~0 S7 g& N( n
; to design the gear teeth. ' U- \' G% F, A6 J, a# ^
;************************************************* " f. Z7 w+ v7 U5 A( w5 m. `
(defun err (s)
" ^" Y% t9 x1 U4 w) W! A8 p(if (= s "Function cancelled") 7 I' [" G/ K5 z- _$ U6 `9 T
(princ "\nSPURGEAR - cancelled: ")
' Z* G" b$ g( V(progn (princ "\nSPURGEAR - Error: ") (princ s)
( B! P+ @) Z8 e& ^) O1 o k(terpri))
7 g; G* E: A# C( f) y) F); if
% a+ ?! Q: r9 {9 P(resetting)
6 C0 l- `. Q' A' q( b5 _. h% h5 c(princ "SYSTEM VARIABLES have been reset\n") ' w- }8 \) }5 ^5 ~; b% C
(princ)
7 ~; g+ P# a9 U1 A( o# Q); err
9 ]6 o5 h% f4 _8 T) E& X4 y9 `4 o, y# w+ |' L" H4 E( l6 e, F4 o. ~+ W
(defun setv (systvar newval) & K% F9 f; z& B$ |0 b7 V
(setq x (read (strcat systvar "1"))) 7 U& u& w/ M$ r5 n
(set x (getvar systvar)) " {+ L5 O- x2 M9 }
(setvar systvar newval)
: R! D& L! M6 m( R); setv
4 ^9 s$ k4 \2 |0 T. B+ [0 K- Y4 `, i4 u5 c4 j7 k
(defun setting () % O% E- f2 C8 w3 n+ c- ]
(setq oerr *error*)
. N$ b N. q2 O @+ p+ I6 k: ~4 C(setq *error* err) * ]- |7 R1 g. r# r9 H! S
(setv "CMDECHO" 0)
~* w/ H- ]9 ?(setv "BLIPMODE" 0)
0 a4 C0 @9 {3 I* w6 @- o+ j7 w); end of setting
4 q8 M2 D5 | n(defun rsetv (systvar) 1 ?2 D. g0 I6 g' p! }* j
(setq x (read (strcat systvar "1"))) ' E O- k# s1 a& A3 R4 k: R
(setvar systvar (eval x)) c5 ~9 ^0 ?( e$ p* O# I
); restv
9 C* \; g9 w6 k! W* Y; ]+ f0 u) h(defun resetting () : ^# @' n( }1 `- x5 U( Y: x
(rsetv "CMDECHO")
; u1 A9 s- g7 X& f* a8 w% C(rsetv "BLIPMODE") 0 i8 _/ G( ^* b( R% o6 R
(setq *error* oerr)
& K4 R8 n0 B2 n% \1 e6 Q; k4 F, V); end of resetting
4 q- o& v5 K; T4 f9 ?8 a* Q* h* u3 H5 E2 {% w& H K: r2 |. _
(defun dxf (code ename)
9 e6 b% E C7 Z8 P1 m$ \6 T(cdr (assoc code (entget ename)))
7 G$ G$ Q1 [, o. U); dxf & t, x# ]7 }, f4 Z: @3 b* p# Q2 y
( B* E: Z: r& ~. P
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 : `( H% @" S4 l. m1 H* R1 u3 k* r
trimcode invent p0 p curvent linent linent2 ent2 p2)
2 z9 a$ K5 H7 A) E/ ~9 h(setq D (getreal "\nPitch diameter: ")
4 T! R: ?3 ?- Z( L+ Z% h8 X x3 K; }5 tN (getint "\nNumber of teeth: ") ' r. j2 W$ d$ \( ~' C
phi (getreal "\nPressure angle: ") r, Y7 |: }8 A0 ?5 k
phi (* (/ phi 180) pi) ; Pressure angle
( O4 a+ l1 {8 r3 b/ {" Z9 {: uDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter , g- P. C& a; v* x
RO (/ DO 2.0) ; Outside radius 5 O: z6 Q! c1 h) G/ U" ^0 W# J
A (/ D N) ; Addendum
% Z1 T; N+ h b, [4 }7 X$ YB (* 1.25 A) ; Dedendum ' T1 @3 j5 a0 T# m2 ~ W8 M- ~
DR (- D (* B 2.0)) ; Root diameter
' k% G# I9 X) t( x; `DB (* D (cos phi)) ; Base circle dia. . e9 n; O p/ b, J, w K
inv-plst (involute DB N phi);involute points
; V) O: ~. t& N8 d0 W+ `trimcode nil 2 k4 I2 O, o- H
); setq
% {/ |7 Y% ~2 p2 X" r(command "ZOOM" (list 0 (- B)) # C, a1 ^' {. l1 Y& ]# R& ~
(list RO (/ RO 1.5)) * ?$ M- {. d, j) L6 e
); command / f8 L. Z8 K* r5 F7 M, q- `+ |6 \: y: Y
(setq invent (draw-inv inv-plst)); Draw involute.
+ P) J, n# @0 i F. R& G. o0 O, S(setq p0 (car inv-plst)
2 W$ {0 k: K5 Q8 D+ `4 c" {trimcode (ext-trim p0 DR D);trim or extend 3 y. H+ y8 U( k+ k% M( l
); setq ; the involute.
$ j6 b, _) }/ {(if (and trimcode (= trimcode 0))
5 `: n K2 a, |2 d5 p" r(progn ; Joins the involute to the extension. , D4 ~! \- t9 V; ~: y
(setq p (list (/ DR 2.0) 0)) 9 u; V; G; B9 ?8 h# w" G
(command "PEDIT" p "Y" "J" invent "" "X")
. r; m+ n7 X9 n$ B! n+ D* A$ ~(setq curvent (entlast))
% N3 p* T8 D: L3 b); progn ) q7 [# z/ `, F/ I* ~4 q
(setq curvent (entlast)) " @& j$ z+ t2 }7 s. L
); if
4 v) j/ V8 B' s& o1 e(if (null trimcode) (setq curvent invent)) 6 u X1 U) r s y l. _9 y
(setq linent (draw-top-line D DB N RO)); top line.
+ v% e5 f8 @$ d$ w" J(command "COPY" linent "" "0,0" "0,0")
9 j. @; Q; u2 B) Q! y! I(setq linent2 (entlast))
3 P: p/ y/ M$ [; w4 u3 C(setq ent2 (mir-it curvent linent)); mirror curve
5 F8 b7 y$ a! p9 W) J(command "PEDIT" curvent "J" linent ent2 "" "X") * I( T% d7 r9 W! s: P
(segment DR N linent2) ; Finish the job!
" [9 t% K* c8 |/ ?6 F(setq p1 (list (- RO) (- RO))) 5 c/ W! c7 D3 T
(setq p2 (list RO RO))
8 h4 H4 L* E+ Q& s9 f+ d(command "ZOOM" p1 p2)
" T% {/ R5 n9 T+ H(prompt "\nConverting to POLYLINE, please wait...")
O1 c. S6 `- z8 `! t# I/ s( p( U(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") ) g1 x/ b8 ]; A' O
(prompt "\nAll done!") 7 B; m# m3 h. i
); spurgear ! Q) K- X) k, s; v
/ v0 S9 _+ W% S8 N
(defun involute (DB N phi / numer denom frac theta2max
/ G5 E! x+ s1 [8 _thetamax theta-inc theta plist RB xval yval p)
- Y) B$ e2 e" N. s! Z(setq invfact 3) Q* s- @! {; Y, Y5 b2 K+ b
(setq numer (+ N 2.0) - O3 n8 L- `) C" N1 }
denom (* N (cos phi))
2 g. }% t2 Z& [1 sfrac (/ numer denom) / h% ], b: d; j; V- b1 a
theta2max (- (* frac frac) 1) 0 G( T: Z( k6 U8 |
thetamax (sqrt theta2max) 0 J2 f& B; i \, q" W* q, Z
theta-inc (/ thetamax (float invfact))
, m7 \+ X6 ?6 }1 vtheta 0 0 y3 m- t w" }
plist nil
; O# o. s3 }, lRB (/ DB 2.0)
5 r3 W) O+ @3 s) Y5 L0 O& R); setq , s3 k7 l& n3 h( \' B1 T
(repeat (1+ invfact) % K" V4 O$ v3 C: w" F
(setq xval (do-x RB theta)
3 a; [3 ~0 V0 [, {' t5 l$ Iyval (do-y RB theta) 0 |! j6 {- X2 {4 H$ j5 ]. H: f; Z9 V
p (list xval yval)
k2 `. t3 f1 \- m3 Q2 o0 splist (append plist (list p)) . i+ _6 O' S; F7 t. ~" S
); setq ! _# f/ V, F2 M8 D+ J
(setq theta (+ theta theta-inc)) * L8 ^( Z% d& G0 [& l+ c
); repeat
# u; n0 `% D1 ?6 c! Mplist & s3 g( r- e' ~' J3 O b
); involute ( u8 z* N7 ~* D) n
( R$ X& P9 ?9 ~) Q" X$ |* u. p' _(defun do-x (RB theta) . G: Q- ] M2 R! ]& W" d
(* RB (+ (cos theta) (* theta (sin theta))))
( H% `& B% q1 q" M g" {$ h0 {3 y); do-x 6 B' L, s: _6 s& i% x* w5 R) Y6 T! t
/ f( ?5 v+ z# i$ q5 g! @
(defun do-y (RB theta)
~9 ~7 Y! n$ N9 n7 Z& i(* RB (- (sin theta) (* theta (cos theta))))
1 [; n2 m8 `6 v* D4 {); do-y
" e9 D4 i. D( s% G: \8 @5 W+ V l& x/ u5 y. j
(defun draw-inv (inv-plst / dirpt plist p)
: {. b; W2 l+ [(command "PLINE" (nth 0 inv-plst)) - |) c# k c$ s# o! \/ g
(setq dirpt (polar (nth 0 inv-plst) 0 1))
7 D. q# ]3 S5 r& c% U" y(command "A" "D" dirpt) : A6 m' T& g8 K1 t) J6 w! }
(setq plist (cdr inv-plst)) ) E8 {; r' U) M
(foreach p plist (command p)) i' }$ A4 P/ C: J1 p
(command "") 1 k2 D0 L+ z0 H4 Z3 _9 ~3 r
(entlast) ' _) a$ e8 `( H+ z3 X+ v ~# K
); draw-inv , }' o& W3 d3 n! y5 e7 s
5 X3 r2 a5 B! p7 ]( y9 y+ z(defun ext-trim (p0 DR D / trimcode dist endr)
( y4 @. ]( Z6 k1 j$ E(if (> (car p0) (/ DR 2.0)) ; Extends the involute , ] ]% S5 k I7 L/ M
(progn
: z. P$ F9 Z- V9 [( \ v(command "LINE" (list (/ DR 2.0) 0) p0 "")
' B F2 j; u3 }' z% O( [: L4 w8 M(setq trimcode 0) 1 D0 p+ W# b1 m- r7 @
); progn ) a- e- J: H8 e$ O3 o: O; s
); if
; `5 }& a* J3 G0 d(if (< (car p0) (/ DR 2.0)) ; Trims the involute . ~5 o5 j3 X6 I1 f- G6 G$ D
(progn
; b# r8 ?" ~, }# p" |7 g0 V0 |! l(command "CIRCLE" "0,0" "D" DR); Root circle : W1 @7 L" V" y% m: ?' w
(setq dist (- (/ D 2.0) (car p0))) # I5 W8 ?# y/ v5 Y' d- [. w
(command "ZOOM" p0
$ B2 z7 n4 |1 e2 d(polar p0 0.6 dist))
& E5 ^5 E" E! O0 \9 G( Z/ E* z(setq endr (entlast)) - A# I7 j: E8 [6 G2 X2 A' B
(command "TRIM" endr "" p0 "")
& Z7 u2 J, s ^. H& {(command "ZOOM" "P")
2 h' L) D: w' Q$ J1 D6 u* W' q3 t(entdel endr) 8 B- H) {7 Z2 s
(setq trimcode 1)
3 G0 T1 X! k+ c6 `); progn
4 Q6 w9 c: B& ?3 }2 i); if
! D7 T5 x. ^2 x* \7 Itrimcode
) B5 a8 ?1 ~) B, h); ext-trim & G: _* v6 `! K3 P
5 {# C6 E# S+ v( s5 {" q D6 ]3 }(defun draw-top-line (D DB N RO / theta-p xp yp alpha
, H7 i6 ?' X8 m/ ` u, p1 j5 ibeta tang angend inv-endpt lend) & w4 d6 A' u! E! l
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
1 [, b% J& R/ G1 ~9 V. yxp (do-x (/ DB 2.0) theta-p); This section
( J( n% e8 ]3 w! A! Syp (do-y (/ DB 2.0) theta-p); sets up angles
; u* C* J0 K3 o) l- e# x+ Jalpha (atan yp xp) ; for drawing a 9 G, a1 n7 @! a! q
abeta (angle (list 0 0) (last inv-plst)) . M% }/ T9 }9 @7 R/ o
beta (- abeta alpha) ; line across the
* o/ H0 g2 |# Q- ?! S! Ctang (/ pi N) ; top of a tooth % g+ V; K+ K; B5 T. b
angend (- (+ alpha tang) beta)
+ y; O! ~. Z+ y% P2 Y! Einv-endpt (last inv-plst); This also creates 1 }, t+ N. u7 G% C, Q/ J
lend (polar (list 0 0) angend RO); the tooth 6 M' e _3 i% x$ G+ L5 |
); setq ; thickness.
' R3 y) Q/ q* l/ b7 j2 z(command "LINE" inv-endpt lend ""); Draws the line
5 A( O& V \7 @- J; t; v(redraw) " d, ]$ Z* X/ y/ i n+ D
(entlast) . ?5 m; j; T- C
); draw-top-line
8 \/ a" g$ ^( h1 I, S8 G4 w" r5 V2 b6 v3 C" _4 E
(defun mir-it (cvent linent / pt) 0 \' _/ |) W* o ^ m0 M
(setq pt (dxf 11 linent))
' o7 q. W. f0 v8 P: R(command "MIRROR" cvent "" "MID" pt "0,0" "") $ m* y: S/ c3 w. w# T
(entlast)
" \+ A+ K* F- g8 L ?: [& N5 v); mir-it ( H7 ~6 Z* e0 e5 T
c9 `, A { T3 i! {) t. J(defun segment (DR N en / p1 p2 ang dist midp p0 pang . m5 m. Q8 o0 T( u7 g, i9 _
pang2 p p3 ent3 entl1 entl2 en1 en2) / b4 r# t& b' s7 Y( r& ~- y B
(setq p1 (dxf 10 en)
7 {' I$ w5 l2 s D/ `p2 (dxf 11 en) . V# l2 L) n" m; i
ang (angle p1 p2) / t& q9 e4 m# W N. y
dist (/ (distance p1 p2) 2.0)
3 c( s1 q$ c# [& wmidp (polar p1 ang dist) . s# |5 c# p9 P5 ]
p0 (list 0 0)
( L! s& }1 R6 E3 Z, w% w; lpang (angle p0 midp)
& q/ S+ b5 _) U& spang2 (/ pi N)
) M. G; ]& M! y* {: M2 Y sp (polar p0 pang (/ DR 2.0)) # z9 ]0 D Z+ w6 N
p1 (polar p0 (- pang pang2) (/ DR 2.0))
+ w( g4 O9 r& y8 o; Tp2 (polar p0 (+ pang pang2) (/ DR 2.0)) * S6 V" E( J9 L+ D% C, R
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) 8 m9 n. w% f3 }3 v5 f! j2 \
ent3 (entlast); This is the tooth p-line $ i$ P3 m' V! G/ v
); setq
! G V, c E+ ?9 H(command "ZOOM" "W" p3 p1) 5 v4 o' C2 q4 u- C% N+ U7 g
(command "CIRCLE" "0,0" "D" DR) ;Root circle
6 }. P9 o" u7 A- l' Y(command "TRIM" ent3 "" p ""); Trim the root circle
" }; D* p1 o3 H8 Q4 c(command "ZOOM" "P") 6 Q" f$ A# y- ^# W
(command "LINE" p0 p1 "")
{+ J( k6 E4 |(setq entl1 (entlast)) 0 @, B1 r6 x+ m5 p% b: a: M( f
(command "LINE" p0 p2 "") 0 w( Z' c4 K6 o
(setq entl2 (entlast)) ' k: n6 q" Y/ r& s" W
(command "TRIM" entl1 entl2 "" p3 "")
4 v1 N6 H/ w( D$ F, T- `% m(entdel entl1)
/ T9 {. R$ n6 U3 [" V(entdel entl2)
& g# u* w/ D$ {3 V(entdel en)
2 ~& Q% Z* r3 X6 p, z# q+ b% o- \(command "ZOOM" "W" p3 p1)
+ d2 X& ?0 k: Q0 G) O2 R0 u(command "PEDIT" p1 "Y" "X") ( T$ _& a# p G1 f
(setq en1 (entlast))
2 N' Z" F j7 p5 B; l(command "PEDIT" p2 "Y" "X") % m; e# ~6 }* \
(setq en2 (entlast)) 9 L- h! F$ Y& t. Y
(command "PEDIT" en1 "J" midp en2 "" "X") X- z K: v) M5 t; n0 Y, m3 H9 t
(command "ZOOM" "P") * E8 l* ^/ Y6 Z# ] d) d4 T9 P K
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") 0 i$ g4 Q7 `. ]
); segment
" S1 d, \( {! x, @" o( |8 P! k1 P6 R4 p5 Q
(defun c:sg () ) S# t1 s% d }' K
(setting) 8 c0 `0 i, t, _: c
(spurgear) 3 }" M* r0 G8 o" w
(resetting)
: |9 Z) E$ G+ d: N1 D(princ) # q( K! ]5 H# d: K, N/ W1 Z
); c:sg 6 |& X8 w- S" o$ J. |
1 G+ G) m# J! g0 e$ v9 {5 B(prompt "\n**SPURGEAR.LSP Loaded!")
2 x% {) f0 C( i# z(prompt "\n Enter 'SG' to start")
1 _( ?$ l% p; N6 ^% \. `;;;end suprgear.lsp' Y/ y3 d2 r) X+ o) U
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的5 D* C: o' l2 O7 C
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输5 f4 ^1 V! Y" s6 U& u' Z% e4 _
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
