有下面一段渐开线程序：8 R% }9 T3 Y+ T3 k
;;;begain suprgear.lsp
6 ?' [' }7 l% [% x) s: b+ H;************************************************* - `4 W F8 `4 _. e6 j3 Q6 q
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss 1 i- j: |; \0 f3 E3 j4 @4 Y2 w; m2 T
;-------------------------------------------------
! }( A* n' v0 v. A; This routine draws a spur gear using joined 2 u i# r# M3 {+ G1 z' U
; polylines. It lets you use any pressure angle + w" M2 e: p8 N; z
; to design the gear teeth. 4 G- ]! g; ^9 |, R7 m$ P; K5 O* |
;*************************************************
- ~1 X* p6 e# B* m2 B* I(defun err (s) D" ` ^! i9 J6 e \9 I. M, Q, o4 `
(if (= s "Function cancelled")
2 n: }, V1 `7 F1 t(princ "\nSPURGEAR - cancelled: ") " R2 a& r R; t; U
(progn (princ "\nSPURGEAR - Error: ") (princ s)
/ J v/ |1 o8 i% ~(terpri))
8 I; [2 G0 B; L. \. [, f9 R); if y6 b! k! ^/ m$ K" o* S* n
(resetting) - E! f5 z& P# s) U5 [6 i
(princ "SYSTEM VARIABLES have been reset\n") " U, K5 M. y/ f2 Y& m& Q
(princ)
" o7 u0 {9 Z s9 [5 {5 `: e); err
6 K# j/ D. q+ \( G. |7 z
! P: x+ ^8 w! Y6 q t- d(defun setv (systvar newval)
( G& F9 O' c5 ](setq x (read (strcat systvar "1"))) 3 w) A. L) p0 A7 Z2 O' G& m5 n/ L
(set x (getvar systvar)) 5 S. l g1 a% r) u3 |
(setvar systvar newval) 5 R, W+ h- u( p# y u( B t; ~4 f
); setv ' Q. Z& G: @6 z( O) I
* ]4 M7 e" n: A0 [+ d9 U6 S9 Q7 b
(defun setting () 0 C% H( B7 @. R! P( u
(setq oerr *error*) % v& R/ |" ? I7 }( h
(setq *error* err)
' h: J4 n1 t1 |0 R8 P7 ^& N3 Q! g5 v(setv "CMDECHO" 0)
: E7 w5 n9 U r(setv "BLIPMODE" 0) 0 s- I, J* Q& J% T0 d, z5 |1 g5 Y
); end of setting
& W) h ]8 }, h+ |* M/ {6 ?# w(defun rsetv (systvar)
5 C) u! ~% F" g$ N* ~(setq x (read (strcat systvar "1"))) : X' ]. x$ }7 k6 ^9 N5 `
(setvar systvar (eval x)) 2 J7 O' t6 j5 z' {$ u5 c, f
); restv
6 a0 x' u3 c. H, T9 o(defun resetting () / K0 p1 @4 \& @
(rsetv "CMDECHO")
; w6 k5 R7 D, a' o# S2 t(rsetv "BLIPMODE") / {" B6 d, ~7 l- K5 ?
(setq *error* oerr) 6 q% p$ r, K$ j0 Y; c2 F8 S
); end of resetting ) k% G) o; u8 |/ G% z% K
& M+ b/ w0 Q' I9 R. D; d% `
(defun dxf (code ename) 5 E4 L4 w$ |. G* i0 b+ c
(cdr (assoc code (entget ename)))
9 ~8 r& j" t" c5 `$ z9 ]1 C); dxf " j ? ?# a/ Q! M" {# y9 a u' X
" J7 A/ B' {- G* u1 t; Z( e V(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
8 R4 D5 E7 a! p- C1 Ltrimcode invent p0 p curvent linent linent2 ent2 p2)
8 g* R% [& r% e* e9 C( u(setq D (getreal "\nPitch diameter: ")
* m2 ?/ _6 q ?% `/ ON (getint "\nNumber of teeth: ")
; j6 S7 W" ~0 r) zphi (getreal "\nPressure angle: ")
6 v4 N) c" M @/ zphi (* (/ phi 180) pi) ; Pressure angle
" Q* y1 J' r. R# a. u) ODO (* D (+ (/ 2.0 N) 1.0)); Outside diameter + r- k) n4 D3 a2 ^
RO (/ DO 2.0) ; Outside radius
/ q- G) M. S' K: ^$ \2 ]A (/ D N) ; Addendum i; F2 U- H1 W- ^5 @$ W3 J
B (* 1.25 A) ; Dedendum V0 I5 W4 _4 R% X" v% @
DR (- D (* B 2.0)) ; Root diameter
/ ?% H. p( ?4 q2 t. e' aDB (* D (cos phi)) ; Base circle dia.
0 S2 J6 o. G {; F! |8 y2 @inv-plst (involute DB N phi);involute points
2 s! A4 M! C" n2 Q j! `9 _trimcode nil
6 f3 @! F: y9 ]2 a2 R); setq
/ a% _8 t9 c* C1 b(command "ZOOM" (list 0 (- B)) * Z( k$ M3 I2 L! ?; r! Y0 q) P% x7 T
(list RO (/ RO 1.5))
6 N3 i) Q o. K3 t5 g); command " r' ^( l0 D: C1 s3 \4 r
(setq invent (draw-inv inv-plst)); Draw involute. 5 Y+ p3 N) T `$ A, K3 T8 T" Q: a
(setq p0 (car inv-plst)
+ b1 [2 L ]: \0 ?+ c- Etrimcode (ext-trim p0 DR D);trim or extend
& {! _! @ w& {8 _7 x% \+ _); setq ; the involute.
7 k4 y% v7 N% E5 S, o4 B3 |3 Z& N(if (and trimcode (= trimcode 0)) 3 `/ c/ y% J) H, N. [0 [
(progn ; Joins the involute to the extension. , h5 y$ j2 \( m/ M( ~) c: t
(setq p (list (/ DR 2.0) 0)) 9 W5 w7 ]% h B$ p5 H' w) A$ a
(command "PEDIT" p "Y" "J" invent "" "X") N( p/ {; A8 P6 U
(setq curvent (entlast))
9 h) T' D- G7 g, S6 S& i); progn
8 j9 i; }; n- W" W+ O4 L1 ](setq curvent (entlast)) & V; c, ~! C8 j: ?
); if 3 q" m& U/ V6 U }
(if (null trimcode) (setq curvent invent))
$ g: x) m% e) l k" [: m(setq linent (draw-top-line D DB N RO)); top line.
5 z& G# b+ h+ T, b- |/ Z3 H* h+ W(command "COPY" linent "" "0,0" "0,0")
- e) p3 Y# h% U* w(setq linent2 (entlast)) " O/ {; V- z( n( ?+ `
(setq ent2 (mir-it curvent linent)); mirror curve 2 [5 v2 N; S% R% N5 u' s/ b4 S
(command "PEDIT" curvent "J" linent ent2 "" "X") ; a3 k- [4 ^2 r$ w2 g9 d$ G' F
(segment DR N linent2) ; Finish the job! 0 f/ F0 F5 }5 Y) C( ?; {
(setq p1 (list (- RO) (- RO))) ( t. F' x7 o- F+ }; v; d+ ^4 P
(setq p2 (list RO RO)) # E0 _( y! u; G) R% K! ]
(command "ZOOM" p1 p2)
5 q" Y9 C: O$ P# Y( ~1 _( k(prompt "\nConverting to POLYLINE, please wait...") # ?, Y" G) Y9 J/ d! g
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") 4 e8 e0 f0 v5 K6 L
(prompt "\nAll done!")
& P1 R8 x7 N; ~5 t) R5 B) {); spurgear 5 Q) Q% M' E5 U) `' S
, \+ w1 p: t9 d0 Z6 z6 d: O
(defun involute (DB N phi / numer denom frac theta2max
2 Y; a4 U6 i& J9 o+ Athetamax theta-inc theta plist RB xval yval p)
0 A6 ?2 v, Q% w0 h6 N(setq invfact 3)
7 {$ ?2 S6 r1 D3 S! M( {9 ](setq numer (+ N 2.0) 7 x$ x' c- n/ t; |
denom (* N (cos phi)) - @2 ?7 S6 x7 |5 i8 F" v! B
frac (/ numer denom)
8 q& [+ ?3 R( ?' l8 I- ltheta2max (- (* frac frac) 1) : L; x+ D; O0 G' F+ h8 o" h: G
thetamax (sqrt theta2max) * U; [: |+ I, w: q
theta-inc (/ thetamax (float invfact))
. v' T$ @" `2 U8 ttheta 0 8 Q& U/ O+ [8 X- f- Q0 T
plist nil
2 n9 m$ F p' t' f8 k7 B& RRB (/ DB 2.0) 1 l/ O( s- T) ]$ b
); setq
1 I1 \+ V ~. H$ F2 `8 v: e(repeat (1+ invfact)
; h; `9 f1 O' C8 B G(setq xval (do-x RB theta) ) e( D& r# O3 g- f. ^
yval (do-y RB theta) ( Q) F& r4 x+ {$ `5 N
p (list xval yval) e2 p) }% }/ F2 r( l) O
plist (append plist (list p))
$ R; H# U9 K/ q2 S+ a); setq ( o% R# }, h4 _5 f0 w9 N2 k
(setq theta (+ theta theta-inc))
# W' e; {$ c0 A9 ]3 J* @- {); repeat
% ]: s. {+ M# N/ ]& f8 fplist
' Q8 H! I( a+ g6 k# J0 i); involute
# R' x6 c, X0 c9 b' T& F/ r @4 J! r) b7 f' k8 m- y
(defun do-x (RB theta) 1 n6 ~) R/ T* U; Y6 L
(* RB (+ (cos theta) (* theta (sin theta))))
* y8 Z7 w1 e3 I) ~' B); do-x " M+ `& ^% [4 T
! S8 E6 P- [' ~/ `
(defun do-y (RB theta)
( _( E$ n0 S) J8 J+ ^! D(* RB (- (sin theta) (* theta (cos theta))))
$ z. t7 e7 h% R); do-y 4 o: }0 a% e9 F9 B+ U) h9 ?& B
/ d5 k7 w. q# t$ n2 Y3 ^9 `, U(defun draw-inv (inv-plst / dirpt plist p)
4 D# c w; c& F/ O5 ?, ~" F: u(command "PLINE" (nth 0 inv-plst))
1 b" J- r, X- Z4 O9 R0 C/ S(setq dirpt (polar (nth 0 inv-plst) 0 1)) * o3 A) v) Y# l, m& J5 b7 H
(command "A" "D" dirpt) 0 O1 o5 L) u$ D- {' P
(setq plist (cdr inv-plst)) 7 x6 @ s$ ` h; [7 z" w8 H
(foreach p plist (command p))
$ o( h, d ]5 v0 q(command "") 4 o; v& p3 p2 w% H
(entlast) 9 w( s. K. e1 k$ b8 k6 W
); draw-inv
/ {3 _3 J" n9 W) L+ L' A: K$ k a8 l2 ~2 S; @+ {* J0 N
(defun ext-trim (p0 DR D / trimcode dist endr)
9 Z% u9 L2 ?( r$ M7 I: S(if (> (car p0) (/ DR 2.0)) ; Extends the involute 3 v% J& m9 } l7 B3 C
(progn ' k" f; W" Y# k" L% P6 h
(command "LINE" (list (/ DR 2.0) 0) p0 "")
: E) g& N% t, c, l: j7 t, N1 b$ h# _(setq trimcode 0) 2 q, V/ G0 O+ [: z, I
); progn
9 _7 \: C W0 u# F9 v3 ]7 u); if 0 Q) ?4 j$ D7 w) F% n. o! B; I5 F
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
* C' N0 P. }) b* r5 d(progn
7 T. S3 u3 u2 @% F(command "CIRCLE" "0,0" "D" DR); Root circle 6 B& U" ~) f; O0 j8 c n/ f. g
(setq dist (- (/ D 2.0) (car p0))) 7 x! K+ ]7 l5 v3 O" j( Q
(command "ZOOM" p0 " f! U5 o6 _' o3 a
(polar p0 0.6 dist))
/ g; O2 U4 ^8 I5 N4 A& }& W* E(setq endr (entlast))
6 J) l. h& I# `4 v. k1 [(command "TRIM" endr "" p0 "") 8 _: |% i$ A. {2 H: R
(command "ZOOM" "P")
8 a1 b/ d4 M1 B3 V5 P(entdel endr)
& Q, o+ t) l0 z, ~6 T: O* k' m( b(setq trimcode 1) ]4 V* G2 l9 {- k9 |
); progn y7 h7 B6 @2 u. Q/ `# Y
); if
2 I! f/ F% V B' Vtrimcode
4 G! s9 D/ X( d- |); ext-trim
# o- b# @7 u/ X" N
7 ?& n# V( U- {* |$ I(defun draw-top-line (D DB N RO / theta-p xp yp alpha
( s3 O, G M. o2 @beta tang angend inv-endpt lend)
/ z' n" H% e$ T6 ^6 n(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
3 c7 E6 ^1 E% U' f0 m; S9 Kxp (do-x (/ DB 2.0) theta-p); This section
( R/ J! n* E! ~( c: p3 Xyp (do-y (/ DB 2.0) theta-p); sets up angles ( g- ~' _, q/ F' Y
alpha (atan yp xp) ; for drawing a
. I2 i2 X, i1 y) d ^3 i- oabeta (angle (list 0 0) (last inv-plst))
# L* v, H6 [( u% U1 I& V. Tbeta (- abeta alpha) ; line across the & ]1 X3 e! l7 R N
tang (/ pi N) ; top of a tooth . i2 S. ?+ C3 N r1 B
angend (- (+ alpha tang) beta) ( B. F7 P. g, K7 t
inv-endpt (last inv-plst); This also creates
6 e2 S4 I; g& K) [! ^& Wlend (polar (list 0 0) angend RO); the tooth
( m1 U( _& g% z/ J0 H% v); setq ; thickness.
, I) u% O4 w6 q. A/ W/ r(command "LINE" inv-endpt lend ""); Draws the line
* q$ e: u9 S. m. t% w(redraw)
+ a5 E5 |9 Q" ^0 j(entlast)
& M& k2 P) R6 j( t' {9 O* t); draw-top-line
% P/ T" G! i% \8 A( D# d
- K! a/ a! U, \. t) ~& x& ](defun mir-it (cvent linent / pt)
% r/ Z$ V1 i7 O+ {6 G& \(setq pt (dxf 11 linent)) ' o; [/ |# C k/ p; [
(command "MIRROR" cvent "" "MID" pt "0,0" "")
# d+ |6 a; X0 | d(entlast) ) ?. j5 p3 a5 d& r& ^
); mir-it
5 c. _9 j" G7 e& _2 v2 f0 G) A9 a( M) m# |7 z( X2 R8 N8 a9 ~
(defun segment (DR N en / p1 p2 ang dist midp p0 pang
/ V' o; i8 q1 l* U8 xpang2 p p3 ent3 entl1 entl2 en1 en2)
& ~: x5 k1 k' V(setq p1 (dxf 10 en) s6 _$ t; ~$ v. {& W6 o
p2 (dxf 11 en)
* N& I v1 O9 g: o1 Lang (angle p1 p2)
5 |! \- Z/ r3 r& L# U2 x3 E$ Y0 Zdist (/ (distance p1 p2) 2.0) 0 N: F- _; N$ d w2 `7 g
midp (polar p1 ang dist)
2 n0 C2 G: p7 h9 M% kp0 (list 0 0) ) N4 o" N5 y. M3 z3 q: K6 y) S
pang (angle p0 midp)
! K: V% ~& x1 p$ X7 d' [# tpang2 (/ pi N) ) U. Q* v _1 V6 j7 S0 j" O: I
p (polar p0 pang (/ DR 2.0))
# ?8 x! _9 C `( Bp1 (polar p0 (- pang pang2) (/ DR 2.0))
# e4 ]7 ^' T% yp2 (polar p0 (+ pang pang2) (/ DR 2.0))
8 I+ I& d2 t* ]& W C( i% F) ip3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) 5 W8 S% i7 v( V! l7 p. p1 K' r
ent3 (entlast); This is the tooth p-line - Z1 i/ R5 \ U
); setq ) _, k% y6 m9 P. \
(command "ZOOM" "W" p3 p1) $ e" K* b0 V. b8 F; u
(command "CIRCLE" "0,0" "D" DR) ;Root circle
5 N0 M p1 F0 g, Z, s' `* [(command "TRIM" ent3 "" p ""); Trim the root circle
" c" m& u. p" q1 Z9 b6 {- Q(command "ZOOM" "P") . ^, l3 Z# e0 \% F
(command "LINE" p0 p1 "")
# \3 f1 ^' B1 X7 H- _3 e9 C7 I1 T5 Y(setq entl1 (entlast)) + {1 D, m6 [% z' S7 J
(command "LINE" p0 p2 "") % y! J, `# m. i! i
(setq entl2 (entlast)) " {8 F( g$ @1 K7 ^
(command "TRIM" entl1 entl2 "" p3 "")
9 O5 `3 T) M' A3 C3 y" \6 ^) E(entdel entl1)
t4 t; A, U+ i; ^, g(entdel entl2)
- s0 n! Q: w! z. j(entdel en)
7 F* n+ g0 r- p2 L6 B7 V3 z" l(command "ZOOM" "W" p3 p1)
/ N! b+ s2 x; K7 r! s(command "PEDIT" p1 "Y" "X") + H+ @6 o& v [! A. E u5 l/ T
(setq en1 (entlast))
& ?( t% A0 g* x: g' D, `(command "PEDIT" p2 "Y" "X") * n3 t2 v# T8 n1 P4 C( ^
(setq en2 (entlast))
; o0 E) h8 L. g3 F4 W: ~(command "PEDIT" en1 "J" midp en2 "" "X")
+ X/ @5 X$ N0 h; t: ?# e(command "ZOOM" "P") + N3 x, ~1 ?7 f- c S2 r7 Z/ P: E$ x
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
/ {$ T" p2 F! p2 m" g- o' l); segment / M' }# K3 p8 b8 }! M! K: K' H2 H
" i. b% J* H) T(defun c:sg ()
) o' I- j" f# l& O" r; w6 V( s(setting)
G2 {0 _" F$ v4 }# R' t. f1 g(spurgear) 0 ?: c9 T7 Z5 |4 o. y1 P0 N1 B
(resetting)
6 T" m7 L' m1 W: O(princ) 5 [* K3 c' D0 \ H9 k
); c:sg 0 J3 B3 p5 X4 I
/ P$ t0 o* C0 D(prompt "\n**SPURGEAR.LSP Loaded!") 4 Y. B% U! K! u. g2 Q' q( J
(prompt "\n Enter 'SG' to start") 6 T, M& _$ M5 C) [8 p
;;;end suprgear.lsp
) R, x2 _0 O& P) R打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的! _( A, t9 ~" F1 R3 l
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输8 ~4 |8 p y* t! K
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
