有下面一段漸開線程序：7 k, ?7 l) x$ X1 g3 Z6 w7 P
;;;begain suprgear.lsp " B, w8 H0 v) t( m! ~& |5 W2 q: t
;*************************************************
- u0 ?7 x- S% z7 g# |;SPURGEAR.LSP - a lisp program by Tony Hotchkiss 5 N9 O- f# W2 F2 z/ L% s, N9 H, l
;-------------------------------------------------
& ^! t3 P9 q: R) n; }' ~* A; This routine draws a spur gear using joined , M' l3 ]6 t6 f+ a4 Y, w0 i
; polylines. It lets you use any pressure angle & W+ t: t y- [7 g4 c& Y
; to design the gear teeth.
# v& e+ Y' a8 K, A+ M;************************************************* 5 c9 V8 Q9 ]6 F, {2 Q' k: g4 G
(defun err (s)
' c- C4 D: H. ?2 c# J(if (= s "Function cancelled")
& Y2 W- H# K3 C& ]2 C(princ "\nSPURGEAR - cancelled: ") ; k$ {) g6 p0 ^ a x8 L i8 o
(progn (princ "\nSPURGEAR - Error: ") (princ s)
! q$ ^5 v: @- k0 g9 S0 L/ [+ a0 S(terpri)) + z0 R9 G; r) l& K1 h
); if
r S; v& E& M8 C(resetting) , i7 ~7 D& Y( r1 J: B! `3 C8 N
(princ "SYSTEM VARIABLES have been reset\n")
' p- Y% ^( n; ^ G9 j8 f; l' x9 x(princ)
. H" L; ^3 Q2 A: l); err & k" k- g% S! ^1 k
* e3 [! u$ n8 h* n(defun setv (systvar newval)
# M6 g+ b$ J8 f1 w/ w( G7 }(setq x (read (strcat systvar "1")))
" U4 q4 z8 x! j4 E) c(set x (getvar systvar))
Z. O: d% y" y9 u7 Q. y ^$ E3 @(setvar systvar newval) ( d9 M/ V: @' S$ G. k
); setv 1 s2 @, [9 C! H: B
$ O: \* S( j. G- r* o Z! v(defun setting ()
5 M0 V4 s- v: T, {3 ^/ l(setq oerr *error*) * p5 f- s/ D' Q+ m; a# l: r
(setq *error* err)
% s+ E3 Q E1 @, E(setv "CMDECHO" 0) 1 {& C5 _3 c! F/ ~' x$ M9 O, @/ z# A
(setv "BLIPMODE" 0)
. @( M' p3 U% u3 |); end of setting
3 ]3 n' _/ j# q4 f |(defun rsetv (systvar) # J' m- E1 {4 U2 C. O
(setq x (read (strcat systvar "1")))
8 {" d! Y- q3 i) V. y9 k(setvar systvar (eval x)) % A6 M$ S0 i! l9 Z. m+ Z
); restv , H/ P( L$ d0 b
(defun resetting () - M5 M6 n" d! `; t& s6 U1 I
(rsetv "CMDECHO") - S2 k: u5 V9 v2 i
(rsetv "BLIPMODE")
5 {3 j5 A2 D$ ^2 d. F(setq *error* oerr)
$ y" W7 S! T+ v% a' ^); end of resetting
+ ^+ Z2 D, H! I1 m- w4 I# X( ?
6 b2 W& w# B7 \(defun dxf (code ename) 7 {0 ]6 F& S; M( d
(cdr (assoc code (entget ename)))
- d, M p- J& i! l4 g); dxf ' g0 s6 Q7 P; f& o4 {
; F4 p+ H# t: a3 d6 ]9 @! z6 B. e(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
! G( w, f! W6 U% E& ztrimcode invent p0 p curvent linent linent2 ent2 p2) , G! K! ]" a1 r, G9 ~
(setq D (getreal "\nPitch diameter: ")
& z/ F2 Q$ A( B6 U0 A9 uN (getint "\nNumber of teeth: ")
8 Y6 ^" r" ` ]# G6 s, U$ e+ Fphi (getreal "\nPressure angle: ")
% H- C3 {) b6 Y; G7 Y Aphi (* (/ phi 180) pi) ; Pressure angle
4 _4 Y" T0 e/ D5 @( \DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter : y+ H% s9 m# f8 f
RO (/ DO 2.0) ; Outside radius
( J' e8 ~" R$ I' UA (/ D N) ; Addendum
. Z5 Z/ ^; \& U6 BB (* 1.25 A) ; Dedendum
. G5 P$ N' Q% F& I ZDR (- D (* B 2.0)) ; Root diameter : L$ B; g7 P8 A% p% R8 B- E/ t$ L
DB (* D (cos phi)) ; Base circle dia. 8 l. u1 k1 @8 _8 [2 {2 J, M
inv-plst (involute DB N phi);involute points ( a! _2 \( h k8 \
trimcode nil " K9 J! J3 g% a# c# ?$ n' h
); setq 4 I2 w; V4 O$ W* ^
(command "ZOOM" (list 0 (- B)) 7 [- r1 R9 w, A5 K
(list RO (/ RO 1.5))
3 {3 n6 u4 }2 t4 H6 e); command 7 |8 F& A7 H: S
(setq invent (draw-inv inv-plst)); Draw involute.
) m! a3 ^9 |+ `& Z" R(setq p0 (car inv-plst) ( w( b/ g8 N2 v' Z# j3 p5 R
trimcode (ext-trim p0 DR D);trim or extend
/ f. o+ E7 l6 o' e( z* w: n); setq ; the involute.
* c+ Y" S0 I( ~, ](if (and trimcode (= trimcode 0))
/ v& b6 ?+ a, ]/ \; U. Q(progn ; Joins the involute to the extension.
* ^7 q* z' @) c* @( g, M Y(setq p (list (/ DR 2.0) 0))
. J6 y6 Z. i3 `) @! Z0 w4 N(command "PEDIT" p "Y" "J" invent "" "X") * Q: x0 P B" x# ]+ M( Y* u: B
(setq curvent (entlast))
8 W/ e! b( ~+ G. @); progn
. ~" S8 D$ m8 {. q# N, h4 Y! w4 [(setq curvent (entlast)) * \* ]! s# B1 q
); if ( `1 b9 Z( `7 g& R9 q1 j' b
(if (null trimcode) (setq curvent invent))
' S+ O- c0 `. s& c3 ](setq linent (draw-top-line D DB N RO)); top line. E/ h% C& q4 @4 i
(command "COPY" linent "" "0,0" "0,0") 0 d3 f7 q5 M- x6 ~. v3 u
(setq linent2 (entlast))
$ g6 j5 Z& A* D" |5 ]) Q5 l* |(setq ent2 (mir-it curvent linent)); mirror curve . e( q: K K9 m* }4 C
(command "PEDIT" curvent "J" linent ent2 "" "X") 5 m7 Y0 B' a3 P- S# J1 u; c
(segment DR N linent2) ; Finish the job!
) T0 C! q3 t) a8 h' G- r0 l(setq p1 (list (- RO) (- RO)))
7 t$ j8 E% E; E$ q(setq p2 (list RO RO)) . o6 g: S+ F. o+ M* r9 Q! z* j* o
(command "ZOOM" p1 p2) ' I, `9 E, b$ K* B, `" N9 @
(prompt "\nConverting to POLYLINE, please wait...") 3 T& C$ M5 [7 a! N7 C; H
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
6 ]$ L4 O% A: o6 m% ^. J4 {(prompt "\nAll done!") ) j! O" E* b; e6 H" ?+ n y
); spurgear
3 u% k- }! ?' o( z3 }2 g; S1 Q- L, q( i0 n% \ T; G5 |3 ~8 p4 X
(defun involute (DB N phi / numer denom frac theta2max $ J# v3 H* R( Q- P5 V: L" D6 r
thetamax theta-inc theta plist RB xval yval p) + b& e5 k7 Y( y/ H6 j
(setq invfact 3)
. _$ H5 b6 X( C( n% Y7 {(setq numer (+ N 2.0) ; u2 {0 m1 L, O. ?9 L) s" c
denom (* N (cos phi)) * y; n2 a5 {6 Q' J+ G; K
frac (/ numer denom) 3 F& Y) e/ y; X5 l% V( c+ Z
theta2max (- (* frac frac) 1) 2 w0 d% _- K: _6 N7 N% M! ?; k
thetamax (sqrt theta2max)
4 K4 e; i' s! l1 \: s/ Q( N6 ^theta-inc (/ thetamax (float invfact))
& \ c$ G: ~( y1 _5 I/ n! c( Jtheta 0
+ d- v. C% h$ k7 Uplist nil
, _: y% e1 f2 {RB (/ DB 2.0)
" |9 I ~8 Z [4 _( ?); setq / y- }6 t) ]8 Q4 k
(repeat (1+ invfact)
! N# ^% c8 f# R. }(setq xval (do-x RB theta) 5 S/ i* \" c. U9 @+ R, b
yval (do-y RB theta)
0 Q" h9 D9 M% _' m1 e+ B& X7 J2 G$ Sp (list xval yval)
8 @6 R( I) g5 ]plist (append plist (list p)) ; N) C" n2 M' ^, s) O
); setq + ^3 l, Y/ w9 B+ ^1 [& h0 c# K
(setq theta (+ theta theta-inc))
! o5 z$ h+ ?, ^8 v/ T$ \9 Y! k); repeat
) m2 {4 e% i& ]5 d Dplist
& s5 _; F9 ]! l4 Y# ~8 o); involute
8 m& Z, \+ v6 B# [( N" L
) m. m+ B9 [* r3 G, U8 H(defun do-x (RB theta) 9 i/ E9 Z; H6 b! q
(* RB (+ (cos theta) (* theta (sin theta))))
3 p0 W) P. B0 h( e); do-x
, W" {' |. |) r- m. z' G( u3 U. g- t
(defun do-y (RB theta) 8 i/ t V, j+ V8 K
(* RB (- (sin theta) (* theta (cos theta))))
# L0 u8 O, h( a: ~1 ?9 N s' }+ w+ |' T); do-y ' U/ q; |4 U ~
7 s5 r8 j' F( [: l: ^
(defun draw-inv (inv-plst / dirpt plist p)
8 J& l3 F) C' i/ P(command "PLINE" (nth 0 inv-plst))
# ^( F5 d6 o* L: I* O% B; S3 c(setq dirpt (polar (nth 0 inv-plst) 0 1))
5 c' E* |. y5 c+ U6 P$ V/ ?(command "A" "D" dirpt)
5 f9 j8 N% d5 g+ D6 j9 o(setq plist (cdr inv-plst)) 4 T' E; L! _! X5 Y: _ U+ A. e
(foreach p plist (command p))
7 z/ `! g1 o' N1 @- a8 r9 q6 I(command "")
" @' q5 f5 x5 l(entlast)
# R. a' S: I- E! W/ d0 B+ r" c5 G); draw-inv 1 _; r `1 d0 r. @
$ Z' s' L, T- W, w0 r K
(defun ext-trim (p0 DR D / trimcode dist endr)
' j+ B/ b7 e9 O( n/ O3 g(if (> (car p0) (/ DR 2.0)) ; Extends the involute $ x: A& c' V! M( a2 v- d$ h3 f+ h
(progn 9 X) V* R9 u- c% `
(command "LINE" (list (/ DR 2.0) 0) p0 "")
. c# T2 J! M: f3 @0 E: d5 {1 b6 @(setq trimcode 0) 6 [5 n1 M7 L" o5 u* ~ p6 f
); progn 5 j3 O8 z+ B; b6 k- T) W& K
); if 7 _" m) ~* A' Y" \, I" ~1 h
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
3 |$ t; t( M* }2 R2 R$ M(progn , S' G6 o- F3 D5 Q, g$ U ~
(command "CIRCLE" "0,0" "D" DR); Root circle 5 c* g: N# L6 k9 _9 j3 l! t7 L
(setq dist (- (/ D 2.0) (car p0))) . q- }: J: d6 ~% B: l! w
(command "ZOOM" p0 # X/ ^3 U; o- ?6 Q) h2 F+ G
(polar p0 0.6 dist))
# @+ C' a( i6 ^& z9 A9 u2 J(setq endr (entlast)) , g) J# w, y c0 l6 N; I
(command "TRIM" endr "" p0 "") 9 ? q1 k) j4 l
(command "ZOOM" "P")
7 F: u7 n/ ]) g0 u# E(entdel endr)
; D. J e5 Y5 o, _(setq trimcode 1) * U0 u5 C, O. s2 b, G
); progn 4 i/ |. {, a4 A- @! [" K
); if
, y8 \; ?, q8 {1 w4 R2 f( {2 |trimcode
& u% u( x9 L' A: f. C7 t); ext-trim
% u x5 {/ C# x3 m3 L9 ]
# r, I1 V9 c0 U$ a5 c" f; i& m(defun draw-top-line (D DB N RO / theta-p xp yp alpha
/ {/ l, X- K( C4 m- Fbeta tang angend inv-endpt lend) + b! v' E" P8 [( K' ]2 D% O2 Q/ @" o1 j
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) 4 x0 y. |0 H: O0 E0 y; M; D5 W# ^( j
xp (do-x (/ DB 2.0) theta-p); This section
5 a! k) O* {1 N7 I& t2 A, k1 Q# yyp (do-y (/ DB 2.0) theta-p); sets up angles
8 o3 t8 z5 Q' a. a1 halpha (atan yp xp) ; for drawing a
. a, H" u% C3 `! Uabeta (angle (list 0 0) (last inv-plst))
& k8 ~8 l/ i: A1 T$ v% [beta (- abeta alpha) ; line across the + p9 e( _* \- N, Z2 e3 z
tang (/ pi N) ; top of a tooth
. G" j9 L5 Y8 D, D, F& t1 sangend (- (+ alpha tang) beta) / R! X, d; A+ Q: Y
inv-endpt (last inv-plst); This also creates
! M: R/ z+ d; Z7 r/ h& olend (polar (list 0 0) angend RO); the tooth & d+ u3 V1 P& |) k- P, @
); setq ; thickness.
9 j* s+ g; v! D n% G(command "LINE" inv-endpt lend ""); Draws the line
$ z. Y4 L' `+ X8 E3 D. g(redraw) 7 t i% c3 v# }- \3 s* N& l; O7 o
(entlast)
! Q$ G6 e2 ]$ @( {6 ~' g7 Y+ K" P6 n); draw-top-line
2 l. n! [* _) y* _! o! W; H) t- u* E5 J6 Q7 E8 P b% U
(defun mir-it (cvent linent / pt) + v& n; T. U; I: T4 E% {
(setq pt (dxf 11 linent)) ! E$ K+ f# n) L/ Z; U( c% ~" _
(command "MIRROR" cvent "" "MID" pt "0,0" "") # B) S* V. z5 s. P! S* o3 y$ b
(entlast)
, E3 e3 G) v {: M9 N' Q); mir-it
3 b* U0 ^' l1 {3 ?9 x9 }4 ]3 i1 @9 p ?& O3 T; \+ Y
(defun segment (DR N en / p1 p2 ang dist midp p0 pang
1 q7 P$ e+ K0 ?4 V- opang2 p p3 ent3 entl1 entl2 en1 en2) . }6 E* g3 ^8 e, z( x
(setq p1 (dxf 10 en)
2 [8 a6 w3 r; ^( Np2 (dxf 11 en) - N/ U2 F5 z0 q+ o A, a
ang (angle p1 p2)
/ q" J- ]& C3 N! Udist (/ (distance p1 p2) 2.0)
& g$ _* S& b7 Lmidp (polar p1 ang dist)
/ g: s% D' o# l9 r% \/ h6 q# Dp0 (list 0 0)
5 X+ Q) D' ]! j7 @7 f! f/ {) W Dpang (angle p0 midp)
e# B! L7 g, r# B4 d) Apang2 (/ pi N) & n5 C" l# n) e7 Y* Q* w
p (polar p0 pang (/ DR 2.0))
! |) Z. p5 S* Bp1 (polar p0 (- pang pang2) (/ DR 2.0))
2 t; T% Q7 k, K) Np2 (polar p0 (+ pang pang2) (/ DR 2.0)) ) ~! z; ]: E. S. N
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
, }! X1 h; O3 L9 \6 Ient3 (entlast); This is the tooth p-line
6 N! ]5 A; D' T6 Q, y- B); setq * U+ U) V i; @/ S: S
(command "ZOOM" "W" p3 p1) ' J, z% P& a) e
(command "CIRCLE" "0,0" "D" DR) ;Root circle - q9 |+ q# S' p& b4 h
(command "TRIM" ent3 "" p ""); Trim the root circle & W% f0 i% h$ \( R# l7 W
(command "ZOOM" "P")
& J+ |+ a& [* l6 ^$ Q(command "LINE" p0 p1 "")
( [( O5 J f, ?. C(setq entl1 (entlast))
" f+ @2 H; T8 A5 a5 T- h(command "LINE" p0 p2 "") l( W" J J! U
(setq entl2 (entlast)) % a3 t S; ]' K) s7 i) U U
(command "TRIM" entl1 entl2 "" p3 "") % x4 X3 E& Z% U' Z$ N+ v
(entdel entl1)
1 s2 E4 u. K- a- {* K. r(entdel entl2) : \$ |( B$ u O1 V' G& _
(entdel en) 5 y- t; f0 P/ L t& u
(command "ZOOM" "W" p3 p1)
m6 ~. u9 r1 @. B, R' U(command "PEDIT" p1 "Y" "X") , ?4 V+ ?2 U) @8 E7 L& `
(setq en1 (entlast)) , {0 g- v+ L7 N5 L" v
(command "PEDIT" p2 "Y" "X")
" n. M% n5 C! l+ [+ E(setq en2 (entlast))
! h+ w5 a' f4 F5 C. p(command "PEDIT" en1 "J" midp en2 "" "X") 9 J6 G( W0 S8 O- @' i3 @
(command "ZOOM" "P") * ` V- Z4 ^3 }0 |
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") ! u2 _9 O: R0 Y) R; T8 Y
); segment
0 t7 n- T6 D! u1 T* _! f' L- t* a+ B3 a' y7 i0 j
(defun c:sg () # C% [# y" a' }. V
(setting) 0 q9 c1 w% J0 P, Q' p# j) M
(spurgear) & d- e- L- {2 ^7 W
(resetting)
( o1 [$ |) ^ N' x0 f: J4 C- Z9 n(princ)
; N. C' R% v+ o. f1 X+ g, V); c:sg
. g, I W( Q4 z7 s" i
, e* Q7 h- J- X9 Z(prompt "\n**SPURGEAR.LSP Loaded!")
" A7 A" q2 m$ h! H3 p5 i(prompt "\n Enter 'SG' to start")
: @- |# n: p( _+ q) ]9 b/ H8 \. i;;;end suprgear.lsp! a) w9 ?( J# p3 Q1 q; p
打開CAD圖形后點擊“工具”菜單→AutoLISP→加載→找到自己所存的
* W% F( n* z$ M. }".LSP"文件位置點“加載”、點“關閉”。在CAD環境下“命令”狀態欄里輸
, l( k5 u9 _- d+ p入“什么”命令后才能按提示使用? |
發表于 2007-10-20 03:42:53
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