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有下面一段漸開(kāi)線程序：
8 V2 X# {' x P/ m;;;begain suprgear.lsp , K& x, ^7 L1 I6 Q
;*************************************************
4 B4 q" {3 ~ y; o2 Q% m6 X/ v;SPURGEAR.LSP - a lisp program by Tony Hotchkiss 0 P. L2 D& B3 n; b2 ~ e+ ~* w
;-------------------------------------------------
* P! \2 x O2 i& I5 }- G( i- ]( ]2 q4 H; This routine draws a spur gear using joined
, n( ^9 ?" e" d* r; polylines. It lets you use any pressure angle 4 m' i# H4 L6 L7 J# F
; to design the gear teeth.
! o J1 i9 V: @. j t5 V5 U;************************************************* " I* G% j9 h- [5 B; s4 F8 G
(defun err (s) * H- N2 B+ n3 S8 S y+ t; P8 i2 ?
(if (= s "Function cancelled")
5 g, B' I5 V) ^) F" J$ C6 ?(princ "\nSPURGEAR - cancelled: ") 6 Z5 E! W; {$ C! V
(progn (princ "\nSPURGEAR - Error: ") (princ s)
2 G. a" J Q9 D# U! j! o" F(terpri))
9 x0 O' H$ R% f* T9 l; e; I- k); if + w+ T& G9 i9 t/ Y- p
(resetting) - }; r0 d) o! l
(princ "SYSTEM VARIABLES have been reset\n") , R' h5 x1 Z4 u4 t% ~
(princ) " n6 k: |, ^" H7 I* ~
); err " H0 V6 S$ w; A7 s9 E
; O: e) j! k0 R* \7 ~3 L3 Q(defun setv (systvar newval) ( L9 K4 V Q# z: ]6 d; l* r4 u. o' @
(setq x (read (strcat systvar "1")))
3 u' q8 X1 r8 r( a, L; a9 ^! `(set x (getvar systvar)) ' L5 q* M4 `# _) ? A2 n
(setvar systvar newval) 4 H) f6 h$ |2 Q
); setv 2 S7 y% ` \3 M; J
4 J& u6 C! ?8 D6 b% [
(defun setting () & A/ y, l% S2 z6 y7 ^
(setq oerr *error*)
6 b0 G& r2 w K% h4 @" t9 w(setq *error* err) 5 \2 @# I8 N# A8 ?9 x5 l* \
(setv "CMDECHO" 0) f, F2 {, G6 C' ^4 n
(setv "BLIPMODE" 0)
+ ]0 n+ z, ?# q: q); end of setting
( `/ Q6 m# b( Y% s% @) m! M: n(defun rsetv (systvar)
5 z" [& l4 \' d+ a* r(setq x (read (strcat systvar "1")))
8 E/ d9 m/ ?9 [" ]9 r! {(setvar systvar (eval x)) 6 c. r r1 u$ F F
); restv ) b! W2 P+ u' ?, f" V
(defun resetting () : T0 @/ Y9 Y% Z4 h
(rsetv "CMDECHO") + n7 ? \+ @: G# I- ~
(rsetv "BLIPMODE")
/ Y6 _ D6 J s8 k" m Q& ?' `& a5 {(setq *error* oerr)
& X3 X$ [: ~. }0 w); end of resetting ( d4 }8 D) t, G5 U9 t& |
+ {7 O) O2 F8 v* e, B( E/ s w5 J(defun dxf (code ename) 1 t$ w2 w. n' W% k- m' n
(cdr (assoc code (entget ename))) % z) Q( z. I1 F m. m
); dxf 5 ^3 K4 ?+ Q5 u r
3 t" {, V4 I. `) F S6 W
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 ) l+ D0 ~% f+ V! U2 W
trimcode invent p0 p curvent linent linent2 ent2 p2) 2 E9 h! R( }6 W; x$ p
(setq D (getreal "\nPitch diameter: ")
3 j( W E! \1 c" F0 w& `7 bN (getint "\nNumber of teeth: ")
8 N; W; ~7 }' H0 p% J4 R% lphi (getreal "\nPressure angle: ") 4 d( O% O0 E [) b* z/ J
phi (* (/ phi 180) pi) ; Pressure angle . y2 B. A4 w+ W( w0 Y- q
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
1 B! b6 q- W U3 x. C* b! `RO (/ DO 2.0) ; Outside radius * q$ S4 m E& ?. ]9 k
A (/ D N) ; Addendum
# ?8 Z# A2 F1 f. _ \4 UB (* 1.25 A) ; Dedendum 5 {% u% h+ V" A/ f1 K- N! k$ t1 \( o
DR (- D (* B 2.0)) ; Root diameter
/ U$ \ Z# f+ l3 B/ }5 z/ GDB (* D (cos phi)) ; Base circle dia. $ s, B# i \# I7 }. i" l" }. b
inv-plst (involute DB N phi);involute points
" U6 f: }" |$ V# F4 w* Dtrimcode nil 2 y8 f9 f% h- ^' q
); setq
4 r+ V& |. s( S(command "ZOOM" (list 0 (- B))
3 c1 r& O. Q/ Q5 w4 y+ U) l(list RO (/ RO 1.5))
0 O4 K" ?% [- }6 L4 k); command
' [& r1 y8 s* [8 ^(setq invent (draw-inv inv-plst)); Draw involute.
- v, u9 b& Q8 m. r9 t(setq p0 (car inv-plst)
2 }* d2 s3 v5 ]/ x# Q3 y2 atrimcode (ext-trim p0 DR D);trim or extend 7 n( Y @' x, _# g" m$ p. v
); setq ; the involute.
S6 F' j( a, H& H* P' a(if (and trimcode (= trimcode 0))
' n( v3 c4 ~2 D; X9 b" c(progn ; Joins the involute to the extension. , Z; ] M/ D' J O4 E: Y- \5 D
(setq p (list (/ DR 2.0) 0))
3 @1 a5 y! u9 |) P(command "PEDIT" p "Y" "J" invent "" "X")
9 d2 o- C$ O2 }3 l: h0 b(setq curvent (entlast)) ) w O, n2 |4 ^# r9 w
); progn ( O, z7 n- J. z1 I
(setq curvent (entlast)) 2 t# ]3 o: q2 ]3 |
); if " m! G, W0 f% T2 {
(if (null trimcode) (setq curvent invent)) 2 J3 r. ~0 _* q) \7 Z% r
(setq linent (draw-top-line D DB N RO)); top line.
# I3 s' B7 q5 n6 m3 \1 p(command "COPY" linent "" "0,0" "0,0") 6 t' m+ B- f& p6 }; E# j4 c
(setq linent2 (entlast)) 1 {$ v* c/ R+ g, Y4 O: T4 g
(setq ent2 (mir-it curvent linent)); mirror curve , S+ i% [$ G: R$ S) |3 Q9 A
(command "PEDIT" curvent "J" linent ent2 "" "X") 7 {6 |( X( F$ j& ?
(segment DR N linent2) ; Finish the job! ; m7 k$ T' s9 g j4 f3 z
(setq p1 (list (- RO) (- RO))) ! ]' R3 W4 |3 R0 R: r/ I) A
(setq p2 (list RO RO)) : `, |4 _1 y- L$ l7 w
(command "ZOOM" p1 p2) ! @* O1 a* ~' d8 E+ \$ Q! d
(prompt "\nConverting to POLYLINE, please wait...")
) X; T5 q; }; \8 n7 A; l(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
( X2 X! l4 X; T: D+ S(prompt "\nAll done!")
( W6 a* Y, \% ?9 t); spurgear & Z1 R) f @5 ?" |* o
2 C, N3 _! \; j, S+ t- q3 p(defun involute (DB N phi / numer denom frac theta2max ) r+ c, Q* K; r3 z" }9 \
thetamax theta-inc theta plist RB xval yval p)
" ?4 F3 i$ F1 F(setq invfact 3) ; v* M! c6 E/ m$ u9 t; J
(setq numer (+ N 2.0) 7 C( @% I' T1 P5 U1 t2 s& v* V% j
denom (* N (cos phi))
9 ~. U* F7 t6 _+ @( S+ tfrac (/ numer denom) 9 R' j8 P& D0 _. r2 H" h
theta2max (- (* frac frac) 1) % N( d2 w7 _3 M/ f; U, H1 S3 J
thetamax (sqrt theta2max)
% L6 ]6 d) g) N! Mtheta-inc (/ thetamax (float invfact)) & E+ E' L6 p7 e ^) x1 l
theta 0 " n5 [3 \; b& T4 Y
plist nil
v( n2 N Y% [) m: ~" g$ TRB (/ DB 2.0) , g0 k+ i5 I8 I5 o; Y
); setq ( N3 h: b5 D" Z. \7 v& Y
(repeat (1+ invfact)
: k. L( _; J L(setq xval (do-x RB theta) 5 n7 {7 H6 {6 Q- b% T
yval (do-y RB theta)
. @) B, ~% R0 E4 ]* s0 hp (list xval yval) ' v, F# `5 _) m0 L$ Y0 L# N2 ~
plist (append plist (list p)) 0 R2 U, l3 b) h! c9 d, f0 M
); setq
' K+ y/ |' g7 _2 E+ L(setq theta (+ theta theta-inc))
; q7 w: q0 D0 w3 \' z, M); repeat 6 L; T; i7 {/ O7 g
plist + \/ i& w9 M! U+ \/ ~& p" N
); involute 6 @# y( F8 M+ r* U+ L5 l
8 Y& i$ ]% n- I+ y# ?
(defun do-x (RB theta) 6 [. L- `" s& B% E1 p" M5 u! a
(* RB (+ (cos theta) (* theta (sin theta)))) " w. [. ^. e9 u% Q& f( r% k
); do-x 7 j1 }) h3 v4 K6 O: _
! B( R6 `0 ]: `# Y8 x) ~$ _% I
(defun do-y (RB theta)
( U4 x+ p8 L) r! z- M" z(* RB (- (sin theta) (* theta (cos theta))))
+ c+ m+ V: u/ h! g! J/ y); do-y , a, @8 A3 f) h; F
3 `' \8 O- c& Y Z$ a(defun draw-inv (inv-plst / dirpt plist p)
' p+ t7 Y; }3 w1 d(command "PLINE" (nth 0 inv-plst))
, o* I- r' R. v6 [- t; y" w(setq dirpt (polar (nth 0 inv-plst) 0 1))
$ p. \+ I* _: Z0 N6 |: m4 y(command "A" "D" dirpt)
3 ~* b! ~$ d8 p, V+ P(setq plist (cdr inv-plst))
7 |% j% R7 x }/ ]3 d# V(foreach p plist (command p)) 9 }1 D( c, B" E$ r! \
(command "") $ K Z, k5 X$ p! A g1 u, J0 o1 k
(entlast) % I. j) k! H) e8 l5 X( H3 o& k
); draw-inv
% S( S: S$ B9 A2 u# {7 Y/ B+ B5 m; ^2 }1 R/ r
(defun ext-trim (p0 DR D / trimcode dist endr) 5 k8 I0 f& }& ]( w6 |
(if (> (car p0) (/ DR 2.0)) ; Extends the involute
7 l+ |2 Y% F, U1 W2 d/ D(progn 2 m1 N6 E/ K/ Q: o1 ?# {
(command "LINE" (list (/ DR 2.0) 0) p0 "") 7 m' H( b k4 X {1 w$ s l) o
(setq trimcode 0) ) n8 C0 k Z* {9 F# p
); progn . `8 k" f5 \1 n' m
); if ( k" j n0 w$ k6 {
(if (< (car p0) (/ DR 2.0)) ; Trims the involute 9 ]: ^. \7 ~" Q, N- m
(progn ! }- F/ D( |! m" F, v! W( f
(command "CIRCLE" "0,0" "D" DR); Root circle 0 ?* Z3 T& f2 F) o- z% x! z
(setq dist (- (/ D 2.0) (car p0)))
) O4 }; V) n5 X6 f, C' o(command "ZOOM" p0 ' @& G/ i; ]; K1 G9 Y$ D
(polar p0 0.6 dist))
8 h7 B: [+ L7 F& d, s# o; e7 V! `- }(setq endr (entlast)) + f" P# P6 H% B* u2 W9 e
(command "TRIM" endr "" p0 "") 3 `0 t0 _6 U) r {" m# f; d
(command "ZOOM" "P")
[7 s# X# ^' Y4 W* M(entdel endr) 6 @' ^; Z2 l4 f B. k
(setq trimcode 1) 4 W# Q: m0 H8 a$ T" W- K2 P. F% C
); progn
' h6 _7 t. ^1 Z, |; L); if / W# D6 c M4 y6 G/ o/ O, d
trimcode
3 \+ m) o! U3 ]0 ]% F- S; s); ext-trim 1 w+ {" T4 B$ ?; E' L4 J6 X. h
' S; {9 l/ G; q$ Q" T(defun draw-top-line (D DB N RO / theta-p xp yp alpha 7 G6 D' |9 P: z
beta tang angend inv-endpt lend) + w# O4 J* L9 S5 j4 P
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
$ ~4 f3 y$ Q* U. J' K: H; H8 Vxp (do-x (/ DB 2.0) theta-p); This section 0 D* C( T8 d- O/ ^. ^
yp (do-y (/ DB 2.0) theta-p); sets up angles " L5 O) f& K/ u6 @
alpha (atan yp xp) ; for drawing a
! o6 t( B% r( X' {. A2 y Wabeta (angle (list 0 0) (last inv-plst))
$ l8 G, z* c) D( Tbeta (- abeta alpha) ; line across the % h" J$ W, z! Y9 X. _% |. s" ?
tang (/ pi N) ; top of a tooth 3 y% m6 j) h- R8 U
angend (- (+ alpha tang) beta)
* _: B4 ?7 z* ~. @: D2 U* O8 finv-endpt (last inv-plst); This also creates . ?& K f) @; M3 Y7 A- y* |
lend (polar (list 0 0) angend RO); the tooth
$ @: u7 l/ v- ]); setq ; thickness.
; e! @/ F& p1 g# O9 Y5 |(command "LINE" inv-endpt lend ""); Draws the line # m- z4 e! D; }- ], ?7 j
(redraw) , @2 M. z4 z4 b* R6 ]& z
(entlast)
5 v% L7 S; ], w); draw-top-line
3 W- T8 Y V% S+ c2 y' r5 Z4 r# X+ i1 S
# j- R, i& _, f(defun mir-it (cvent linent / pt)
, `/ D* q; S0 C5 @* t U) ?(setq pt (dxf 11 linent))
$ d! ~# [+ K- \. |(command "MIRROR" cvent "" "MID" pt "0,0" "")
5 X& V4 o/ i) R(entlast)
& ?4 e: U1 @2 |- s); mir-it ; u( Z' `" C0 X( X
# s8 b; ~8 h2 Y/ m* y) n
(defun segment (DR N en / p1 p2 ang dist midp p0 pang ; ^2 P6 M. G {$ U. ^9 `
pang2 p p3 ent3 entl1 entl2 en1 en2) $ Q) K7 f C8 m! B
(setq p1 (dxf 10 en) $ i' u9 X% v! G
p2 (dxf 11 en) % e. F) u7 b# Q( ]- c! K+ L# \9 o
ang (angle p1 p2) 7 G: {7 U4 X, e6 y6 @7 W/ V' z
dist (/ (distance p1 p2) 2.0)
; l( P# M, v0 O$ I9 \& [. W% rmidp (polar p1 ang dist)
2 H1 V/ C$ p+ }' Lp0 (list 0 0) , n, M8 D, j, T! `+ ?2 O: C
pang (angle p0 midp)
4 m k. E" E5 a x& epang2 (/ pi N) : d& G2 w# ? {0 T- d; \" \
p (polar p0 pang (/ DR 2.0))
/ ?9 [) ]( r( Up1 (polar p0 (- pang pang2) (/ DR 2.0))
2 V* ~: A0 a. Q8 R. Zp2 (polar p0 (+ pang pang2) (/ DR 2.0))
4 ^5 e' O2 p9 K0 f; f1 ?p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) ' G3 P9 n' ]% I6 |
ent3 (entlast); This is the tooth p-line
4 g! J8 k/ M0 m2 Z% l); setq
. F" g `" Z2 e+ h(command "ZOOM" "W" p3 p1) 6 s. B. D& G; c: H1 B5 z2 e2 Z9 K& J
(command "CIRCLE" "0,0" "D" DR) ;Root circle " O: |) x; v Z1 q
(command "TRIM" ent3 "" p ""); Trim the root circle % Q( E3 l" X# D$ C, j% Y' q
(command "ZOOM" "P") % }% o9 L7 B* M r
(command "LINE" p0 p1 "")
1 ^% {2 E' `( z7 p" _( \3 C(setq entl1 (entlast)) 6 ^ i8 d [7 ~+ u
(command "LINE" p0 p2 "") % R9 j6 k7 C7 @' ~
(setq entl2 (entlast))
3 ?$ J' c$ ~4 t4 x(command "TRIM" entl1 entl2 "" p3 "")
1 j8 L0 k" l: i(entdel entl1) + h# c* V; ?# O% ~1 ?
(entdel entl2)
9 u6 t6 Q- D, _0 u(entdel en) # d% t: n0 q& ^% n# B6 \
(command "ZOOM" "W" p3 p1) 1 ~* g- D9 y: ?$ i0 g
(command "PEDIT" p1 "Y" "X")
, F$ x6 v6 c( i# [; r# U(setq en1 (entlast))
- Q0 `" B; o8 b6 H- Q6 c2 E8 G' P(command "PEDIT" p2 "Y" "X")
/ J6 n. X7 F6 i4 ?1 l(setq en2 (entlast)) 8 f) F- h$ T, f/ x* }9 q
(command "PEDIT" en1 "J" midp en2 "" "X") ; p( O7 t: d' Q% p9 @" k
(command "ZOOM" "P")
% M6 G- f4 V- W- Y, |" [$ q(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
; z7 V7 _( l6 p* Y); segment
( ?* O8 {& Q, a$ m( _; V9 G, M2 [0 m) D* D1 S+ f$ }3 d) d* p/ e* ]+ F
(defun c:sg ()
+ D% G- ?) v, ]: U) M(setting) 9 { [2 K1 U4 G7 {$ ?8 C
(spurgear)
/ K a+ F0 K* l% D% w9 ?(resetting) , _7 W+ m% T& _
(princ)
& y, V# k+ |9 q2 k- d1 Z: @! I); c:sg
/ a- n- M2 b: O+ H# x8 c7 B% j q% T$ g% w' Y: v3 X- Y
(prompt "\n**SPURGEAR.LSP Loaded!")
- b( H, d, e/ }: r(prompt "\n Enter 'SG' to start") 3 K9 g2 f7 \0 o/ V- Q
;;;end suprgear.lsp; n- U7 m" F- K( `+ D9 _7 A
打開(kāi)CAD圖形后點(diǎn)擊“工具”菜單→AutoLISP→加載→找到自己所存的
/ U0 F9 x" z2 @$ n: H- j".LSP"文件位置點(diǎn)“加載”,、點(diǎn)“關(guān)閉”。在CAD環(huán)境下“命令”狀態(tài)欄里輸2 }3 x% ?2 X, \
入“什么”命令后才能按提示使用? |
|
發(fā)表于 2007-10-20 03:42:53
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