有下面一段渐开线程序：# {" P% F- X" m8 Q
;;;begain suprgear.lsp . o& @" Q; ~8 k' r0 N7 d6 ^
;************************************************* 0 f9 Q4 P! T. ~1 m/ Y7 q. K0 O( ^
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
3 y1 g& E4 h' S* L4 `: ?;-------------------------------------------------
+ g' G, B6 Y3 w; [- `( S7 P$ @; This routine draws a spur gear using joined ' ^4 [3 Z4 J$ b5 k6 n+ h3 f; u" f8 B- _
; polylines. It lets you use any pressure angle
8 y! H& e6 C# f, e9 L6 B9 T; to design the gear teeth.
4 X$ i( Y0 i2 ^& c8 z8 P. A2 O;*************************************************
6 N# s. k# u7 B5 i& \9 \# C(defun err (s)
: w7 u8 u1 \6 L) L(if (= s "Function cancelled") ' v2 q7 ?2 _1 |! D' B- p
(princ "\nSPURGEAR - cancelled: ") 4 d( E0 }. A2 \
(progn (princ "\nSPURGEAR - Error: ") (princ s) 4 _/ }5 x0 C( l: o/ w
(terpri)) , z/ K% f1 [( x- p2 l) ^+ {
); if
7 w$ t& u% Z( ]+ N4 K/ p(resetting) , A3 D; \2 c; e: n, q' d; B
(princ "SYSTEM VARIABLES have been reset\n") 5 c% ~; Q; A8 v9 z0 l
(princ) + V, L3 N6 ^& D M
); err ! i& x4 h" e9 B4 n5 y7 ?4 J% I
2 e: Q; R. ^4 _
(defun setv (systvar newval)
1 m) `* K2 B' _- L, F3 R(setq x (read (strcat systvar "1")))
; [2 H; G9 O [9 A(set x (getvar systvar))
* B& ^, D# P# f5 q4 `(setvar systvar newval) ( a. g2 R! y. D+ M) I
); setv
: `4 t3 s1 v$ e! F3 K* b! P5 O) F" s4 ?1 \* O( {9 o" b' o" g
(defun setting () ! [5 P* F+ ^0 \7 A7 p6 Z
(setq oerr *error*) 4 I% b; n6 c1 j* z" p' }
(setq *error* err) - ~, N9 ?. e5 u3 n2 M
(setv "CMDECHO" 0) ' u3 u! i; `( N d( R% ]1 b" m( O
(setv "BLIPMODE" 0)
% x5 p+ w: h- j s( ~3 g); end of setting
2 ?# n- O4 p! |(defun rsetv (systvar)
8 _9 V% T3 y {2 S9 b2 q(setq x (read (strcat systvar "1")))
, V/ ]3 D7 s8 d2 F% i2 j" W2 l(setvar systvar (eval x))
& R2 d& T$ t, f7 l3 C x2 f# ]); restv
& j" C* a n+ O1 e, j$ N(defun resetting ()
* y. ?9 M, Y* R$ ^+ k# h5 m(rsetv "CMDECHO") / H: W3 N, i# F+ Q5 |8 W j
(rsetv "BLIPMODE")
, ?- o$ O$ A4 S9 K4 c(setq *error* oerr)
5 w7 S* x( g* }# v. E. B" R); end of resetting
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& O' O v. r+ t4 g) {: G: X0 @(defun dxf (code ename) 6 J% m0 q% n5 \ t }" `/ ~" e
(cdr (assoc code (entget ename)))
+ ~( c6 l, }7 x3 f9 x( w); dxf
. Q C2 s0 e8 ]' l' Q3 L; w7 W1 J$ [0 \( d& c, S1 S3 E
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 4 ~: V7 b. P6 Z
trimcode invent p0 p curvent linent linent2 ent2 p2)
. w% L) C; a# ?' N9 J2 V(setq D (getreal "\nPitch diameter: ") 1 N1 W- }" D. K* s
N (getint "\nNumber of teeth: ") + A, e# k! |* E" v' o
phi (getreal "\nPressure angle: ") ; f% ^9 C! Z7 |' y1 G
phi (* (/ phi 180) pi) ; Pressure angle + F0 |9 K1 \' E* ^; e* O. |% E
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
* ~ F3 T5 I2 i3 G7 ZRO (/ DO 2.0) ; Outside radius : I4 |2 X& z, v1 Q! x/ ]( r
A (/ D N) ; Addendum 1 {" d% J. t. m% P0 u2 k# Q
B (* 1.25 A) ; Dedendum " }5 w9 S2 H8 F6 a/ |
DR (- D (* B 2.0)) ; Root diameter 7 ~' \2 @' a. I! L( J3 D' [; Q5 U* i
DB (* D (cos phi)) ; Base circle dia.
, z1 M' k& ~0 F! S2 Z8 D$ V* Rinv-plst (involute DB N phi);involute points : _/ U: @7 ~* `
trimcode nil
# K7 c9 M4 E. G- z); setq
7 ]2 Q+ X5 w6 T(command "ZOOM" (list 0 (- B)) + f! {! C3 n6 |* M& y4 `
(list RO (/ RO 1.5)) 8 h% l3 I/ F! w% @; D- |
); command 9 u. N8 ?. V/ @, Z3 B
(setq invent (draw-inv inv-plst)); Draw involute. , s5 y; l+ h c7 A
(setq p0 (car inv-plst)
( A- Z9 k& A# [2 [" ctrimcode (ext-trim p0 DR D);trim or extend
3 l! ^/ e' W \2 z! T3 s); setq ; the involute. % ~" q: J m# `% s5 Z% i! Z) g
(if (and trimcode (= trimcode 0))
! \8 P4 c1 f9 G+ d(progn ; Joins the involute to the extension.
. A" k9 e4 `$ f) W(setq p (list (/ DR 2.0) 0)) # o0 Y+ U! Y- {& ]
(command "PEDIT" p "Y" "J" invent "" "X")
; x. b3 ?# X! I6 i(setq curvent (entlast))
# [/ t! R3 Y0 n$ I, j1 Q); progn , B3 ^) N" q7 y |
(setq curvent (entlast))
; g5 g9 K5 k8 V; \6 c$ Q9 W); if 7 S6 }3 U" P' \ ?
(if (null trimcode) (setq curvent invent)) 5 ~2 t) d0 U* j; `' c+ F
(setq linent (draw-top-line D DB N RO)); top line. ; h4 ~4 U# }% [/ [" n& D+ L9 Q
(command "COPY" linent "" "0,0" "0,0")
# [" E/ y% C0 ~4 n; O2 I( O) R(setq linent2 (entlast)) 8 l# w, ]5 N) d5 V' a
(setq ent2 (mir-it curvent linent)); mirror curve # e; ~1 _" V5 O4 X1 s- o
(command "PEDIT" curvent "J" linent ent2 "" "X")
5 y' B# g6 D) E* _4 l+ {(segment DR N linent2) ; Finish the job! \2 ~, P5 y' T6 A7 I$ o; X9 H
(setq p1 (list (- RO) (- RO))) $ m+ ^$ `/ j6 Z$ Z
(setq p2 (list RO RO)) 4 e* S0 j, d; w7 R
(command "ZOOM" p1 p2) 9 W) y- m0 W8 L9 n% J8 N. Q
(prompt "\nConverting to POLYLINE, please wait...")
, L7 }4 |( a# y6 `4 G(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") 1 z4 R7 |" m( A5 d4 m* X/ @) y# W
(prompt "\nAll done!") 4 Q' u, K, W0 G: t* A" G
); spurgear
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0 M$ |2 y/ x. S* S) Q4 N(defun involute (DB N phi / numer denom frac theta2max
4 Q, U* R! I A5 U zthetamax theta-inc theta plist RB xval yval p) - ^/ M$ X: ]+ N- N1 x f; a
(setq invfact 3) b, T" [5 O3 V9 M
(setq numer (+ N 2.0) 5 O; l. @% w4 I1 e' y7 S
denom (* N (cos phi)) ) U) J( b2 `+ q4 c
frac (/ numer denom) + I% p# i/ x) K( E; q# O7 e X; V
theta2max (- (* frac frac) 1) : `2 m2 P" v9 B2 h6 U: A
thetamax (sqrt theta2max) ; J6 d( U/ R) ~9 X
theta-inc (/ thetamax (float invfact))
- H! `$ n G3 U# x$ Ptheta 0 " Y. {% w4 M5 O9 O! f0 j7 q7 S
plist nil ( X6 w- ]5 U4 N/ @4 g
RB (/ DB 2.0)
* ~" V6 a5 H% C% m6 p4 w0 w); setq % A/ n& Q4 X, p# Y; }8 t1 s
(repeat (1+ invfact) 1 }1 R6 i. e. ^. G
(setq xval (do-x RB theta) 2 `4 E! m r/ W5 K @, a8 s5 i
yval (do-y RB theta) 9 j9 C: U3 c, t; I
p (list xval yval) 3 U3 W/ X5 U$ j# O! ]
plist (append plist (list p)) 6 p& c" p$ P& e% d/ P1 r' D
); setq
+ z+ v, K! [8 c. p/ ?(setq theta (+ theta theta-inc)) 6 V+ \5 A) o: N# a+ w4 j& D4 V
); repeat ' g" h7 t( Q2 n, c" T* g
plist * i( f/ H u" y
); involute
3 O' p% s; X0 l, D- X& f6 N# T4 `. x' _+ f3 _2 ]8 r: d; B; r
(defun do-x (RB theta)
& \ o+ L5 X% V(* RB (+ (cos theta) (* theta (sin theta)))) 1 U( t9 Q# r1 i+ l# W# V8 U5 {+ A- N
); do-x / w9 e, L, u( L6 m2 M: ?& E; u+ l
7 }/ e. h$ N1 ]) |+ S% K# B, N(defun do-y (RB theta) B4 d* D7 i0 i* M& m# s6 C
(* RB (- (sin theta) (* theta (cos theta))))
_( t) E4 O$ `% X" A( ]); do-y
6 j4 v, _7 r9 r; m9 j/ g6 e/ D& l6 C5 h1 W) P3 U! G3 f$ w. W
(defun draw-inv (inv-plst / dirpt plist p) ( m9 Y/ | k% \# F* a8 e. {
(command "PLINE" (nth 0 inv-plst))
. W& S+ i- u' q; Q" B. B(setq dirpt (polar (nth 0 inv-plst) 0 1))
2 ^$ Q* j/ v+ [* }, [(command "A" "D" dirpt)
# Y. G4 m- x$ Z J0 t(setq plist (cdr inv-plst)) 6 o# [/ \& E& o' f" J0 r# ^2 G" c
(foreach p plist (command p))
2 t D( O; H3 V3 |0 Y) f1 K(command "") - H+ K& N( J. ]( N' O
(entlast) 5 s( J! E; a6 b$ k1 g7 i" i
); draw-inv & B. Y- e( D2 J/ Q6 n
! `2 z% Z! s, D
(defun ext-trim (p0 DR D / trimcode dist endr)
l7 G3 V4 F5 m, O$ i/ g0 v, i(if (> (car p0) (/ DR 2.0)) ; Extends the involute
$ ]) P7 O- k8 H! i( Y/ j7 ]+ O(progn
, z, i3 g3 s( z/ g1 y3 W6 d6 Y! j(command "LINE" (list (/ DR 2.0) 0) p0 "")
' o7 r) F6 I/ \(setq trimcode 0) % h9 L& b" c; `( n5 o9 r R
); progn
: f7 t/ G& E2 |2 I+ E/ Y! G R/ z); if
6 h% x# ]% I7 z$ W(if (< (car p0) (/ DR 2.0)) ; Trims the involute
9 l; D& Y" P% O4 J1 S. r(progn + K( c3 s$ W' m0 Z8 C7 o `1 w: T
(command "CIRCLE" "0,0" "D" DR); Root circle
a7 L% W9 j# M6 R(setq dist (- (/ D 2.0) (car p0)))
0 u. Y3 q- `1 T% X: U, _(command "ZOOM" p0 ) Q% N) l d. `) }5 v+ d
(polar p0 0.6 dist))
$ B X# F8 U$ E& |+ D' _) \6 ](setq endr (entlast)) # E1 s, g: [" t+ s0 M: l& B2 a* A6 m k
(command "TRIM" endr "" p0 "")
0 K' D5 l9 a# S' e M(command "ZOOM" "P")
- r" ]. p* i4 h% e% a, e- p(entdel endr) 0 F2 w* M: {- y+ d- E& U! M1 Z
(setq trimcode 1) 5 Z1 Z: V% y2 M% V4 G1 `9 j
); progn 4 R, Y& E7 {) k8 X+ V1 n6 Z
); if
* c' i2 E8 S" \ Dtrimcode
9 a) L0 Q! A/ ^1 N* y); ext-trim : T/ E3 t' E* h- ?, d
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(defun draw-top-line (D DB N RO / theta-p xp yp alpha
% B( h$ g% E8 O3 l. bbeta tang angend inv-endpt lend) 6 q9 h( F" z. d& D" D
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) 2 c0 q7 z9 s( E6 G* l
xp (do-x (/ DB 2.0) theta-p); This section
- \' @& ]8 \1 x, z# e$ kyp (do-y (/ DB 2.0) theta-p); sets up angles
0 ?9 d. O5 G) i; F/ A; lalpha (atan yp xp) ; for drawing a
: {' Q0 B: A Sabeta (angle (list 0 0) (last inv-plst)) 2 g" s7 k# z7 b/ h
beta (- abeta alpha) ; line across the + x# T- O4 z$ z. i* R, R$ t
tang (/ pi N) ; top of a tooth 1 G4 D0 A* {# n+ O8 u+ i: _0 j
angend (- (+ alpha tang) beta)
* `# k1 r+ [$ j8 a2 Dinv-endpt (last inv-plst); This also creates 6 P' f6 }' e0 D$ y
lend (polar (list 0 0) angend RO); the tooth
- n# D6 M9 D! L); setq ; thickness.
7 }7 F3 e& |" i(command "LINE" inv-endpt lend ""); Draws the line
3 r. e8 z$ q$ x X6 Q! Q(redraw)
* P6 X7 Q# B; J1 V6 G3 x(entlast) 1 E2 \8 p! {3 I: V% I: ~6 N
); draw-top-line
: W" H! L6 e/ ^, f0 N b6 C! b6 w: { `( s- z: @( E- f5 ~4 V
(defun mir-it (cvent linent / pt)
5 x2 @/ h, [6 t; ^5 o(setq pt (dxf 11 linent))
; p- z3 [; m; U1 l$ ]$ R(command "MIRROR" cvent "" "MID" pt "0,0" "")
* U: t. O, O4 J4 _- C(entlast) : r2 K7 C& B& L7 l5 Z
); mir-it + m; \; E+ i# D9 P, }4 s' R) v! c+ H
% _8 ?, K4 P2 q" p; i
(defun segment (DR N en / p1 p2 ang dist midp p0 pang
% V: A0 m O [2 ^8 E1 J3 jpang2 p p3 ent3 entl1 entl2 en1 en2)
% v0 q# l; g3 D6 v, Y(setq p1 (dxf 10 en)
/ R" w8 c+ B2 Q: ?* y4 R; Np2 (dxf 11 en) - F5 l8 i7 a. O0 f
ang (angle p1 p2)
7 n; a$ {/ H. xdist (/ (distance p1 p2) 2.0)
* i' f1 C* g9 p) z7 u9 }8 B( }midp (polar p1 ang dist)
$ N8 g9 ^" |' s% Mp0 (list 0 0)
. N0 I. I, O2 @7 ?" M( Spang (angle p0 midp)
' Q" T: y, I# b3 B2 Spang2 (/ pi N) 9 w8 T/ O9 x' i( x5 C
p (polar p0 pang (/ DR 2.0))
" P4 _8 m" E( s( D, Fp1 (polar p0 (- pang pang2) (/ DR 2.0))
$ S& K. o7 w3 k2 j( Y4 A; |. {2 Tp2 (polar p0 (+ pang pang2) (/ DR 2.0))
# I, i* Y) s" j$ kp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) + z5 U( @' \' \ F! _: U
ent3 (entlast); This is the tooth p-line
8 ~. {- V9 h; w7 V5 g); setq
E) P6 i2 a; b" Y; z(command "ZOOM" "W" p3 p1) ( s, p/ t# `5 ~8 Z
(command "CIRCLE" "0,0" "D" DR) ;Root circle
! m4 @5 @9 c) H/ ?6 u1 V. M(command "TRIM" ent3 "" p ""); Trim the root circle
! X% ]8 h5 m: e3 c(command "ZOOM" "P")
) E! g7 D( R6 w1 `! S6 W(command "LINE" p0 p1 "") 0 E/ j( x a3 n/ } O. B/ V' A
(setq entl1 (entlast))
! |' T. I y0 o+ { N(command "LINE" p0 p2 "") 2 u2 w" |5 C0 W$ N
(setq entl2 (entlast))
% e. G1 m* n P) b6 ?) u% w(command "TRIM" entl1 entl2 "" p3 "") 4 R: s) c* q. I0 z" |
(entdel entl1)
5 Q" y6 B; F+ q4 b) N0 }) N(entdel entl2)
9 l5 b, x7 o8 Q(entdel en) + |, p3 Q# U" }3 J- b, Z
(command "ZOOM" "W" p3 p1)
$ C! `$ O7 R- g(command "PEDIT" p1 "Y" "X") : e, E# b8 O, H- N6 P' [
(setq en1 (entlast))
" J0 l; M6 [5 [. P- i) h(command "PEDIT" p2 "Y" "X") 3 x5 A! N0 A1 k) d; i0 q- }& l6 Q: E
(setq en2 (entlast)) ; V( v9 E0 W7 h8 ~9 K( v
(command "PEDIT" en1 "J" midp en2 "" "X")
3 b3 p% q0 p) z(command "ZOOM" "P") ) @ H5 C/ ]7 [7 S! h: d
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
5 R0 c4 L8 v5 R# z( H); segment
0 {. b$ L) e/ J u" ?/ c
5 l2 e9 s& z$ N( F(defun c:sg ()
" H% ?3 R* V' p% {5 R* r(setting)
6 a* i) x: ?' m6 _(spurgear) 5 Y2 u( o# g1 z' }
(resetting) 7 w7 M! r0 `1 s5 f* e3 B) M' _5 _
(princ) ! o, T" O7 D4 N) a) N1 g
); c:sg
7 R/ O {: |7 c* k2 @$ u" L- Y' a) m v k
(prompt "\n**SPURGEAR.LSP Loaded!") x; D3 \* r! W1 y: I7 a
(prompt "\n Enter 'SG' to start")
3 F: N: e; ?; q5 Q$ z5 |" a- d;;;end suprgear.lsp
* t7 S7 q2 ]/ l# Q g打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的2 @$ b; a+ j0 d2 x2 M
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
1 G( e; W- S, \0 l' A入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
