有下面一段渐开线程序：: F; c( N3 y6 h) @
;;;begain suprgear.lsp
+ ~! U( P% T/ U;************************************************* ) n0 m3 S* s; C5 J. v
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss 2 B2 r. `+ e! g3 h0 t$ V) ]
;------------------------------------------------- / s4 u: }1 o1 e) _
; This routine draws a spur gear using joined 3 A$ a1 y3 v3 ^5 P$ u
; polylines. It lets you use any pressure angle + C' p5 E5 s6 m6 m
; to design the gear teeth.
- c' [" N9 I% }! v;*************************************************
! o0 V+ H0 j" m3 X2 |(defun err (s)
% P5 w1 E2 a1 Q# C+ t/ R(if (= s "Function cancelled") ' u: T) [! ? R, x/ k
(princ "\nSPURGEAR - cancelled: ") 9 H/ @$ X8 \1 A- l: p7 R
(progn (princ "\nSPURGEAR - Error: ") (princ s) 5 W/ P/ X0 P0 Y9 o$ n
(terpri))
3 V8 K( Q) H# h$ }2 g$ `); if # ? T6 ` H4 a3 L: |/ p
(resetting)
% @, H9 o/ q4 @, v* w(princ "SYSTEM VARIABLES have been reset\n") : X. @3 F8 F1 H6 o
(princ) 6 S- k) t( L2 f' s0 F: g
); err
" L$ ~5 V2 x. T/ j7 m' { t) y C# R2 Q
(defun setv (systvar newval)
0 \. |7 w7 H3 {9 F1 X6 w/ X(setq x (read (strcat systvar "1"))) 8 G' `8 C. K: d+ X0 u& ]& H5 s
(set x (getvar systvar))
6 E8 [- ?/ m& M! v6 [) ?+ z2 O. y(setvar systvar newval) 9 q* R% b' |: y9 z$ o ~6 x
); setv ) S$ \; o2 h# e& y
! d( L: N. L* U' {- H8 e5 D( ^( O(defun setting ()
" J) O/ f& c' K(setq oerr *error*)
. F1 D* R3 V7 O3 s2 W6 Z(setq *error* err) : i0 ]2 g8 l. W$ b- Y
(setv "CMDECHO" 0)
3 l C& W8 [1 d: [) P8 f(setv "BLIPMODE" 0) / L$ l' b" @: ^+ h' n/ q
); end of setting 9 c1 f m4 L7 V( N; n& w K$ N+ @
(defun rsetv (systvar) 4 v/ R3 @! A/ t
(setq x (read (strcat systvar "1")))
, h1 b9 Y9 s& B: p4 Z/ C F/ J(setvar systvar (eval x))
+ X& j3 Q- ?7 H- d); restv
) C2 u8 z! |4 D, r6 ^5 Q- j+ L9 C(defun resetting ()
/ r. S: ]6 x# Z( Q ?2 D& P3 G(rsetv "CMDECHO") ; s) Y4 b6 u# n+ g0 y. o
(rsetv "BLIPMODE") ; `7 ^' L% N( f Z' y; n
(setq *error* oerr)
$ \5 N0 Z: {( [' u4 S0 x# l* F); end of resetting ! W9 A" d$ G2 }% i' _6 K2 v. j
' O) ~/ G' P: i% K(defun dxf (code ename) 5 T) Q# n5 ?* |( B+ s; V$ x3 o# g
(cdr (assoc code (entget ename)))
; \* Q3 ]. s% v `); dxf ! W$ M. ?5 s1 h5 P1 q1 u8 O
: i1 I/ ]5 }& e3 _, V
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
% ^. C/ `# P- N( j4 Y8 mtrimcode invent p0 p curvent linent linent2 ent2 p2) 0 Y. a q; x- Y& Z7 m7 f. X4 @
(setq D (getreal "\nPitch diameter: ") 7 f& P3 q8 I" q7 }- c# m
N (getint "\nNumber of teeth: ") 9 o( r1 w8 F. A
phi (getreal "\nPressure angle: ")
9 C% r6 c; I5 p5 sphi (* (/ phi 180) pi) ; Pressure angle 7 L( r, P3 u2 B! t0 Z/ A+ w
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
5 N# i) P c0 T8 j/ T9 ]$ \RO (/ DO 2.0) ; Outside radius / ]8 Z' P7 r# U9 Y4 j
A (/ D N) ; Addendum
; {" @! o" `* {B (* 1.25 A) ; Dedendum ) }* p* H4 E+ `$ a3 L# X
DR (- D (* B 2.0)) ; Root diameter ( f3 U9 |" I4 Y0 K: t
DB (* D (cos phi)) ; Base circle dia.
- h4 c+ m6 w/ n9 V, S7 Finv-plst (involute DB N phi);involute points , r- R1 s, H3 l1 b) K" u) M
trimcode nil
6 ?! ]3 T) D2 @( o8 w- C); setq
$ a( [7 j0 P9 e(command "ZOOM" (list 0 (- B)) 8 S' C% p' ~( E' g
(list RO (/ RO 1.5)) O2 t0 D' D3 T' ?9 X! w- H- l1 F& R
); command
' x2 d, `- R f0 P8 f(setq invent (draw-inv inv-plst)); Draw involute. $ M" }; `8 |7 N# |& j
(setq p0 (car inv-plst)
) g! n" }- A# ]% Q7 ?" A7 [trimcode (ext-trim p0 DR D);trim or extend ( e9 t4 [, M. V: I e, [4 t
); setq ; the involute. $ N( C3 {4 z2 ~% b K# I
(if (and trimcode (= trimcode 0)) & r$ i1 l9 \% ]5 [0 \4 c! r' Y" O
(progn ; Joins the involute to the extension.
; v/ V2 G l( F% ? O, v(setq p (list (/ DR 2.0) 0)) : r. d) r: o4 _+ `
(command "PEDIT" p "Y" "J" invent "" "X") $ S* O2 R# Z, X
(setq curvent (entlast)) - D4 A! X# w [% z2 H2 u# a
); progn
: Q4 d6 w, V7 ~; S8 e: r, U. F: ]) i(setq curvent (entlast))
) |$ I7 V2 y# P* Z3 B); if
9 h1 c( r5 u) z1 t(if (null trimcode) (setq curvent invent)) * \9 S9 l t- }
(setq linent (draw-top-line D DB N RO)); top line. ( L! p: s) j7 M
(command "COPY" linent "" "0,0" "0,0") : O$ n: q- X4 H7 S0 r
(setq linent2 (entlast))
6 l& S4 U, P" [% n5 y8 ?(setq ent2 (mir-it curvent linent)); mirror curve
' |( B9 O7 i$ R4 K; w(command "PEDIT" curvent "J" linent ent2 "" "X")
( _% R+ O2 G2 p+ y) k) k(segment DR N linent2) ; Finish the job! ! z- _5 h$ K8 p2 j1 U0 V* m
(setq p1 (list (- RO) (- RO)))
" D1 E6 E! }' V7 e% K8 e" O3 U(setq p2 (list RO RO))
% w Z) v) E+ j( k6 I(command "ZOOM" p1 p2)
( L9 j( ~: _# R* [( B$ v(prompt "\nConverting to POLYLINE, please wait...") + ?$ I7 C4 n" W/ N
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
% m5 |! B: }! ^: \* I(prompt "\nAll done!") 2 `7 z( G% }1 B4 t% W
); spurgear ) X6 ~" t8 B e7 b' {0 k# e
8 @1 R, a: K5 |(defun involute (DB N phi / numer denom frac theta2max
) V) D4 h4 @5 p5 o8 bthetamax theta-inc theta plist RB xval yval p)
% \- S) e. X: `8 I(setq invfact 3)
4 ~! }2 P9 U8 \% V# z( }2 g1 S: P- d- ~(setq numer (+ N 2.0) + I& a6 z! r' E! ?$ u1 i7 r$ h' D
denom (* N (cos phi)) ) ]/ O% m/ B9 r' P. D* ~
frac (/ numer denom)
4 ?7 c6 P, V9 dtheta2max (- (* frac frac) 1) ( u+ y2 ?1 E4 t$ r; \8 p
thetamax (sqrt theta2max)
0 ~. X% S' K! ?& W; @5 ~$ Itheta-inc (/ thetamax (float invfact)) 5 n& T- m. c2 L5 y$ M
theta 0
* I ?8 K$ X: j: I9 kplist nil ~% m# j1 v5 x" ]9 u& b
RB (/ DB 2.0)
: j3 ?" M% c" e); setq
2 Z7 g# Y) n% A(repeat (1+ invfact) # b& X4 k' @/ K8 {! O: s
(setq xval (do-x RB theta)
; z2 O q, ?# L- M! Byval (do-y RB theta) ! r$ k0 T6 V! M1 D
p (list xval yval) ; Z, P+ k, s% V
plist (append plist (list p))
% ?6 _* j/ r( t, y, s) Q$ q); setq : r4 A0 c1 ?6 f- _- `: i; c! x# x
(setq theta (+ theta theta-inc)) ' l4 d- ^7 ^4 L T( T" T h
); repeat
2 A1 B9 u; A! Mplist $ n' I6 y1 c/ K7 Q+ i& q1 j& B! n
); involute
1 |8 U1 Z7 x `; F R6 j) {
, K" O, b7 r, d; x6 ](defun do-x (RB theta)
7 J# p; v2 _# S" d' x$ x(* RB (+ (cos theta) (* theta (sin theta))))
5 ~& W& Y4 A) ~); do-x ' F, ~, L% |' w" x% l" J g
. ^3 M+ }. i8 ]; }$ j8 x. @1 i(defun do-y (RB theta) 8 i+ f7 M' N' o$ p$ \$ u7 [5 H
(* RB (- (sin theta) (* theta (cos theta)))) ) p$ `) I6 F; `# ]# N
); do-y 4 t: H+ j! n" l; Q! q+ Z
+ D( L$ o. S" G9 e' F(defun draw-inv (inv-plst / dirpt plist p)
6 z8 S7 z# j4 r0 i% G0 u. c {(command "PLINE" (nth 0 inv-plst)) & ~0 l& {+ L, g8 S+ J+ m
(setq dirpt (polar (nth 0 inv-plst) 0 1))
q1 l, M1 O8 Q4 {# ~% t" G+ ^$ ^(command "A" "D" dirpt) ( T+ e' d) z* D
(setq plist (cdr inv-plst))
0 [' ~4 n& o- G( {8 j A1 h6 E(foreach p plist (command p)) & o# p" h" l) R2 ~& q1 Z8 ?8 W h. \
(command "")
/ C, Y1 h& q8 U" C" _2 ](entlast) . U* {* y/ w1 s6 @
); draw-inv
; R3 _" G8 r# I& X9 J E" ~, e$ o1 n
(defun ext-trim (p0 DR D / trimcode dist endr)
9 _4 S& s! A* E( `(if (> (car p0) (/ DR 2.0)) ; Extends the involute . \/ m5 p) B# Y" q/ I! F
(progn
% E' p& Z- `. a! H: _(command "LINE" (list (/ DR 2.0) 0) p0 "")
" [; ^4 T0 d7 T3 y5 |# W5 I" B(setq trimcode 0) ( U7 h* `7 n& G: z! c- }
); progn
6 |6 e9 \/ B4 Z); if
$ W" O4 N. G$ e6 t, F$ @ e, d(if (< (car p0) (/ DR 2.0)) ; Trims the involute " K. ?2 E- ~8 F/ V0 n
(progn : o& P+ p+ [! b& n
(command "CIRCLE" "0,0" "D" DR); Root circle 6 y- A' B4 B" D" t, l" O* c
(setq dist (- (/ D 2.0) (car p0))) 2 u, y8 ~ I1 L* b# {9 C5 o8 o' p
(command "ZOOM" p0
5 ~& y+ [' z9 S$ q- q; W7 @(polar p0 0.6 dist)) % `$ h2 s9 z6 B" E
(setq endr (entlast))
' I* i# Q( S, x(command "TRIM" endr "" p0 "") % B- o5 S$ t; j& P, q! ?! K
(command "ZOOM" "P")
# W# Z- h! W, x( J0 R(entdel endr) - v" Z$ `+ ]% A3 U1 h# J/ u. \
(setq trimcode 1) 3 Q( C( t. U. {& c% @
); progn " m- c) L: p6 P ^$ w; _5 Q
); if * [4 x+ v( d/ J O+ _
trimcode * A5 x1 `( x! R7 V5 e1 I
); ext-trim
4 W& e! q6 u8 C% q. ~, ~) r( X9 k. x( b+ n9 C3 O
(defun draw-top-line (D DB N RO / theta-p xp yp alpha ! ^4 f( e0 ^/ |5 l
beta tang angend inv-endpt lend) ' ^0 ]6 L) ~, f2 B2 b! r. X, D3 a
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) ; ?+ {7 ]& r/ [1 H7 ~/ z1 |" y' Y
xp (do-x (/ DB 2.0) theta-p); This section
@8 B9 q! O- N& a2 c [0 Zyp (do-y (/ DB 2.0) theta-p); sets up angles ( f6 q- a4 Z! I( | C. P
alpha (atan yp xp) ; for drawing a
0 W5 R$ X6 D3 c C5 Kabeta (angle (list 0 0) (last inv-plst))
1 ]% u5 j0 J* s3 e8 b; U& Tbeta (- abeta alpha) ; line across the : u2 O6 \0 Y* M
tang (/ pi N) ; top of a tooth 3 W; R* U0 j t6 L; |3 ?
angend (- (+ alpha tang) beta)
9 S0 k2 P* n/ tinv-endpt (last inv-plst); This also creates
M0 p7 A/ v& Z6 \0 |0 c: e7 Y' `: vlend (polar (list 0 0) angend RO); the tooth
3 l0 d/ X; `: u: l- x' M) X+ o); setq ; thickness.
9 d4 }8 c4 I. e6 P(command "LINE" inv-endpt lend ""); Draws the line
5 h4 n0 K' d; P8 q( x0 p& @(redraw) + {3 f8 b ~' V" q+ ^: m# F
(entlast)
1 T4 C& v" u1 ^+ D+ w); draw-top-line
) f$ u5 J$ w5 k/ D0 g, ]( M! Q6 X% L4 R) j
(defun mir-it (cvent linent / pt)
1 f( X* v3 E7 b( m(setq pt (dxf 11 linent)) 6 o$ L5 c5 t; N9 g
(command "MIRROR" cvent "" "MID" pt "0,0" "") 5 ?: U- x( X R5 r$ G
(entlast) 4 S& K3 I( T7 c4 T4 w9 y+ |% F
); mir-it 4 H) a5 x6 R+ W
+ Y, X5 i) g. N+ n( x4 s# U
(defun segment (DR N en / p1 p2 ang dist midp p0 pang , U9 |6 o7 |" {3 U: C1 _& g8 W
pang2 p p3 ent3 entl1 entl2 en1 en2)
t6 Y# C% H0 N2 d(setq p1 (dxf 10 en) 3 b% Z; d9 _/ _1 k8 n
p2 (dxf 11 en) . `" K8 i' y- _0 A- t7 i
ang (angle p1 p2) 1 x( c1 [$ D& _+ p; j+ k4 W. \
dist (/ (distance p1 p2) 2.0)
4 s* I+ [8 b% ?4 {9 B; Vmidp (polar p1 ang dist)
9 x9 ]; k+ X$ S& f! Rp0 (list 0 0) % n3 ], t8 @7 f( N
pang (angle p0 midp) 0 B( _( u0 }6 H9 H6 |/ r+ h
pang2 (/ pi N) " {. K# h$ d% ]; h' a
p (polar p0 pang (/ DR 2.0)) ( a8 [9 y# w' h! f$ O
p1 (polar p0 (- pang pang2) (/ DR 2.0))
x# R d& G% `( v! A1 ?p2 (polar p0 (+ pang pang2) (/ DR 2.0)) * J& o' |; B/ ^
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) _* J1 E e+ x/ A
ent3 (entlast); This is the tooth p-line 6 L- ], n; L- t+ ~/ Z& s
); setq
; ~/ j& Z% X, n7 \" g(command "ZOOM" "W" p3 p1)
2 Y3 W: e0 c; v' U+ j1 c. F(command "CIRCLE" "0,0" "D" DR) ;Root circle 5 x; [# I# s2 p3 z( z
(command "TRIM" ent3 "" p ""); Trim the root circle
0 {5 m" J5 _1 H+ t. C7 ^(command "ZOOM" "P")
. W* g3 k- J5 R" m(command "LINE" p0 p1 "")
1 }$ e6 u7 q8 I(setq entl1 (entlast))
, ]2 ?. h5 X) E/ |2 ^" b4 n(command "LINE" p0 p2 "") 6 B+ B, J) P$ @. N/ `
(setq entl2 (entlast)) ) n4 }3 g( h. S" ], S
(command "TRIM" entl1 entl2 "" p3 "")
$ `+ q- m N; |# P. C(entdel entl1) % C, t. p9 a! d/ R2 B' h4 ~% e
(entdel entl2) ) w1 D! P9 }; H" z; ?
(entdel en) 6 x$ ?1 m# B& M8 O: M. m2 x
(command "ZOOM" "W" p3 p1)
- |1 }) v; t: a7 K2 h(command "PEDIT" p1 "Y" "X") * b; { B9 r/ p. D$ A2 K" v& _
(setq en1 (entlast)) 8 j6 G6 n( e% U) E' q
(command "PEDIT" p2 "Y" "X")
5 D0 W- g% b+ Z(setq en2 (entlast))
T8 ] g8 D0 r(command "PEDIT" en1 "J" midp en2 "" "X")
" v& B; Y" ? `, f& v(command "ZOOM" "P") 1 [+ `( O0 P7 ?
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
- D/ x! R; U( D! A: ]. ^ i); segment
+ C2 ]2 a. c l; V; l( r h0 ?' Z) i! \/ ^+ C2 r8 _+ {
(defun c:sg ()
- o2 B3 N. h8 s R% Y+ o- ?; z(setting)
* A1 h" |3 \" _0 b& t(spurgear) * X( O' T4 l5 T2 a. x
(resetting) ; x! n( O) A! J6 B% c- H! f
(princ) 5 I [ h& E3 s% A) X J
); c:sg
- U1 J2 ]* v) x8 Y( E0 E/ `5 I& h4 i' C$ q4 _. B2 k' t
(prompt "\n**SPURGEAR.LSP Loaded!") ' i5 h) |7 D! G4 D" F; ~4 l
(prompt "\n Enter 'SG' to start") 0 s5 R, A* T+ i0 t: A1 }1 s& g
;;;end suprgear.lsp% O6 g7 L* }* k' ^$ L9 L& b, N+ u
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
$ ?* w" S2 [. D# d' k0 f! e".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输5 Y2 h) d/ @0 L R$ k y9 [6 Q
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
楼主
