有下面一段渐开线程序： G1 f& E: T* ^: I
;;;begain suprgear.lsp
0 Z8 G& O- E7 M;************************************************* ( w% c+ @% b$ |+ f; s
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss , \. X6 L/ c+ t1 t% m0 d( A
;-------------------------------------------------
1 F) U1 A! K4 N- L: m& n; This routine draws a spur gear using joined ( ~: Y, R/ G: R: c0 v
; polylines. It lets you use any pressure angle
; a8 W' i8 _" X; to design the gear teeth.
* R: F7 i1 I. t R' p& V% k;*************************************************
* h9 n& S, w8 v3 ?, X; F(defun err (s) , Y# ?) S" U! r; j6 b& m4 V
(if (= s "Function cancelled") ( x0 X) T/ u1 p+ ~
(princ "\nSPURGEAR - cancelled: ")
S# I/ c* S5 f0 e( Z! ?4 ~(progn (princ "\nSPURGEAR - Error: ") (princ s)
/ E9 @, _7 C5 }0 H. d% B `# a(terpri))
6 b" Q# I# i2 Y7 p* O); if 3 K, {- p# h: r
(resetting)
! R" ?: w, Y \# l5 r7 X+ Y(princ "SYSTEM VARIABLES have been reset\n") 2 l# `1 K% `- F( L2 i( ]! H, w& o' P
(princ) ( F" M5 U4 @' p1 F! F
); err ; l/ d6 X D# g. l8 s3 R B8 l
" M) Y" E0 |; E& p+ A# H(defun setv (systvar newval)
9 o4 ?7 A q# T- T. ~/ o9 ^# w( \(setq x (read (strcat systvar "1")))
( s9 _9 s2 ~# y" s; k+ w0 l5 V(set x (getvar systvar)) % f: r: v4 B8 i7 G3 _
(setvar systvar newval) % ^: }+ S+ T1 o+ E6 X7 u! w+ j
); setv
% {/ c8 F, j1 S/ {" Q
8 d( M& v8 _2 R5 ~7 ](defun setting () : z! A1 c6 _9 @# h. K3 e9 j. C
(setq oerr *error*) ' q3 L# T0 J* y# `
(setq *error* err) 3 j2 C9 K5 d) e! M. V4 i
(setv "CMDECHO" 0) 5 Z" g: d, N, Z: y6 Y6 K* h0 H( K
(setv "BLIPMODE" 0) " a+ ?# i: l9 J+ l
); end of setting + ~' j, d- F( T% }' h
(defun rsetv (systvar)
# y# d4 m7 W' w$ _$ X9 N+ c(setq x (read (strcat systvar "1")))
9 P+ F* q, U1 ?, ]4 \3 h, o(setvar systvar (eval x)) & m! P% e3 |" T1 C+ {: c8 k
); restv 1 y$ `6 P, m2 z; t$ b
(defun resetting ()
+ J9 o+ y/ i; k) n1 \: l) Y! l(rsetv "CMDECHO") 8 K; s/ c# E. z# N! p
(rsetv "BLIPMODE")
* p) }9 U" p2 U1 N6 n(setq *error* oerr)
2 x- Q" t- s, V) ~); end of resetting
$ s S6 ?* c2 }/ l) L
: c6 [7 x% G3 _5 Q% X(defun dxf (code ename) / m5 S# Z$ F8 M0 D* S% W
(cdr (assoc code (entget ename)))
# ~) h( b0 q9 l" q7 ?' j# @3 X); dxf 0 l& N& d: m8 F2 e5 T+ r- N: m! t9 u
6 K( C) m: ^) y9 Y(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
& c- ?/ r% h$ Xtrimcode invent p0 p curvent linent linent2 ent2 p2)
9 u6 B& C2 e+ w8 {(setq D (getreal "\nPitch diameter: ") & Z4 y) H4 F, M5 \4 k% Z/ \/ O9 g/ [2 ~
N (getint "\nNumber of teeth: ") " {% D' b4 F: ^4 U
phi (getreal "\nPressure angle: ")
7 k0 x/ K, U8 M: Y w$ uphi (* (/ phi 180) pi) ; Pressure angle 7 M7 `0 R# ] X6 r
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter % M5 [; l5 i+ `8 {2 P) w( j# @
RO (/ DO 2.0) ; Outside radius
6 ~* G3 _1 n7 i- T! }" XA (/ D N) ; Addendum & t' T* G! x% I- \7 m9 O
B (* 1.25 A) ; Dedendum
0 w4 U: j. f( z4 a/ XDR (- D (* B 2.0)) ; Root diameter 3 } ~/ Z: J* X5 ~# P/ @/ v4 h8 E+ W
DB (* D (cos phi)) ; Base circle dia.
! V/ l7 w) y+ Q- Minv-plst (involute DB N phi);involute points
& {0 G: T. N: V/ e8 ~3 X2 |trimcode nil 7 ^# u2 ? z# Q
); setq
) f/ @" Z9 Q- |5 B( {(command "ZOOM" (list 0 (- B)) $ [, z7 _0 G# l- [" m- a. n
(list RO (/ RO 1.5))
; Y% z2 A- ]$ `7 Z3 }); command 9 j7 J* y8 Q& C3 n6 E. w
(setq invent (draw-inv inv-plst)); Draw involute. & k3 `, K. u( [1 [ y
(setq p0 (car inv-plst)
Q# x& j' c8 K! ]# A+ T' ^$ ftrimcode (ext-trim p0 DR D);trim or extend : r; w+ N4 ]; x% V7 ~+ l
); setq ; the involute.
5 M0 j( `/ a. Y- e/ e) N(if (and trimcode (= trimcode 0)) - u% J' l# i- g3 d1 y
(progn ; Joins the involute to the extension.
6 q4 N, s! C2 s1 C3 {/ [(setq p (list (/ DR 2.0) 0)) - ?) B- Y5 c- s
(command "PEDIT" p "Y" "J" invent "" "X")
: _( I, R: Q* O$ n: l. m(setq curvent (entlast)) # P- k6 q7 d4 e: I
); progn
# D% F: m s& i# u7 d! z/ z(setq curvent (entlast))
! Y5 I# O% H( r ]; S4 x); if
4 k4 q4 }1 `' P) M* F+ }9 O(if (null trimcode) (setq curvent invent)) & Y+ p4 Y8 D) q/ w! l! B
(setq linent (draw-top-line D DB N RO)); top line. . P, G. e: ]6 R I5 \7 C
(command "COPY" linent "" "0,0" "0,0")
6 Q- T! `+ o6 k(setq linent2 (entlast))
% G+ m& z3 c' e$ _2 K0 K(setq ent2 (mir-it curvent linent)); mirror curve
) t8 M5 G+ i1 }) ]! I8 y) ?3 i(command "PEDIT" curvent "J" linent ent2 "" "X")
' N m7 Y; J7 t5 J(segment DR N linent2) ; Finish the job!
& u" K7 @1 n5 W0 q! q+ }(setq p1 (list (- RO) (- RO)))
2 o) G& T1 |) R* t; l1 W(setq p2 (list RO RO)) & E0 j) c3 A3 D
(command "ZOOM" p1 p2) 0 ^0 ?; Y, u' u# V! f2 |
(prompt "\nConverting to POLYLINE, please wait...") 6 ~2 ?6 F; l- K% u+ G
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") * ~7 X- F# p4 W# s2 F4 L
(prompt "\nAll done!") . a, L, Y' ]8 G/ h5 e2 I
); spurgear ( ~6 ]6 }- C% d' H
P, L; r: |/ ~# D- J(defun involute (DB N phi / numer denom frac theta2max ) ?/ p& N/ U+ v% I- c% B7 u |
thetamax theta-inc theta plist RB xval yval p)
3 I8 A, d5 B) [" w; U o(setq invfact 3) , Y' m |& x3 q* p) N1 N' b/ [8 N
(setq numer (+ N 2.0) 9 b; a- v2 ^0 ` i Q) q
denom (* N (cos phi)) : j6 l1 m$ n, |2 P4 n2 Q0 J9 A, _3 [) Y, |
frac (/ numer denom)
! |2 E6 {* z6 j; j( Q/ S1 F" |theta2max (- (* frac frac) 1)
4 }7 O& A {: W6 ~/ w: hthetamax (sqrt theta2max) ! @$ B) N' t7 { g
theta-inc (/ thetamax (float invfact)) 6 ^5 G0 ?. n+ a0 d) M6 q
theta 0
8 \' `& j: N& H2 N$ Qplist nil - H) t: g [ ?/ A) I
RB (/ DB 2.0)
! d! ^) Y" s3 V O/ [6 O); setq
5 Q" U6 v3 H/ J& [5 U' v(repeat (1+ invfact)
/ s# R& f/ E# C' f! z( a(setq xval (do-x RB theta)
Y" {$ a0 d2 R4 wyval (do-y RB theta) 0 Q1 w8 E& O$ A: G5 q6 O5 r( o7 ~5 ?
p (list xval yval) " P* f' ~# t$ h3 j5 t; V9 x
plist (append plist (list p)) , e9 R9 s8 i4 Q$ l( i: P, T
); setq
- K# j8 `5 t" A, D(setq theta (+ theta theta-inc))
7 A" h5 {0 n+ k" S+ t); repeat & `9 s; S) J* @" ]& q/ k
plist - U- J4 ^- o# P9 V8 k* A
); involute
! Z" C- E+ p+ r5 O7 X
" H# D3 {2 S) | v o(defun do-x (RB theta) % s& ~, i2 U2 Y% u5 `
(* RB (+ (cos theta) (* theta (sin theta)))) 2 h1 o# l- K/ O! f) K1 x1 I5 _
); do-x 1 V6 T6 Y' ]' p4 S! H' J0 ], H
4 g) H0 O4 l8 e3 ~1 \(defun do-y (RB theta) 2 J2 c1 s# f/ o# Y" Z+ Z. L" ]
(* RB (- (sin theta) (* theta (cos theta))))
" u% a/ z% V7 z); do-y
) D* C \4 y6 C3 q& h( y$ t# A. T P% M8 q$ l% j" M( o
(defun draw-inv (inv-plst / dirpt plist p) 9 L' R- N: B% p9 `2 ~' _9 n e
(command "PLINE" (nth 0 inv-plst))
( L* }# d+ z9 U% v: U3 n# A(setq dirpt (polar (nth 0 inv-plst) 0 1)) , w7 w$ `6 P* D
(command "A" "D" dirpt)
( m2 X L5 N- @, E(setq plist (cdr inv-plst)) 4 b) ?/ b" h) p6 h8 b1 Q9 r
(foreach p plist (command p)) - \) k/ s6 [0 l4 M w6 U$ l
(command "")
3 Z1 k+ ?$ v+ c) D2 O, O+ X(entlast)
- P* M2 }3 H7 B7 ~/ g: v); draw-inv
1 @$ h" p9 g" J1 N+ | X) g3 N, r) h3 w g7 D& Y- V- ]
(defun ext-trim (p0 DR D / trimcode dist endr)
7 k' h/ r4 G) s(if (> (car p0) (/ DR 2.0)) ; Extends the involute + x+ L, o! z$ P5 y' Y2 v2 _
(progn , d& d5 e+ w) ]
(command "LINE" (list (/ DR 2.0) 0) p0 "")
. N Q, q5 Q; A% J: x- H(setq trimcode 0)
; M1 o: C( O! }& x); progn
, t8 o% F4 H0 Z! \& `0 E); if
- w* v9 P$ @- n) N" Z(if (< (car p0) (/ DR 2.0)) ; Trims the involute
! I! s6 r" ?- i! _, B) Y(progn
) [7 f0 `' [& F# H4 B) q(command "CIRCLE" "0,0" "D" DR); Root circle 0 T1 O5 z" D" y' y6 z9 ]% r
(setq dist (- (/ D 2.0) (car p0)))
. l/ a3 ?, P; T6 q1 a, L. g(command "ZOOM" p0 : l3 p0 k" E" w- }4 ^
(polar p0 0.6 dist))
# @! M) c/ h1 s* {(setq endr (entlast))
, \8 Y$ l8 w S& Q" r5 O(command "TRIM" endr "" p0 "") 9 }- U% m6 A' W1 s9 Y
(command "ZOOM" "P")
- U5 {8 E* R$ _8 Y. D(entdel endr)
$ b* I7 w) T, D; v, |3 Q(setq trimcode 1)
+ L% {: n) ~- M0 g7 Z9 r); progn ^$ } A( n R" S
); if
7 B+ m5 w7 B2 t4 |$ Ttrimcode 0 f1 u2 B( r, V
); ext-trim
* i& s9 k; ?2 G+ W
& W' F; k6 h3 O4 F5 S(defun draw-top-line (D DB N RO / theta-p xp yp alpha 1 _4 s+ i# B' f6 k! Z2 @8 i* z( n
beta tang angend inv-endpt lend)
! ]: L& ]( P/ [4 Q, z(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
1 N+ D) j; P- p. `2 |2 @xp (do-x (/ DB 2.0) theta-p); This section ) `0 J% i! Z) t- e
yp (do-y (/ DB 2.0) theta-p); sets up angles
# I$ B8 d6 U u2 Q" balpha (atan yp xp) ; for drawing a
% N, W$ g4 f, G7 L9 Zabeta (angle (list 0 0) (last inv-plst))
- A" v+ o% ^1 Q1 |; G6 z) rbeta (- abeta alpha) ; line across the
3 @# M. Q6 O, L1 f0 L- K! Ctang (/ pi N) ; top of a tooth ! w1 S7 |6 n' ?, ]4 x
angend (- (+ alpha tang) beta) 4 p Z! J3 n+ C6 B; K% D# ?% R
inv-endpt (last inv-plst); This also creates
. m9 ~( N3 u$ j1 R/ T: f& ~3 Vlend (polar (list 0 0) angend RO); the tooth 6 f& K4 c; ^0 e n4 f
); setq ; thickness.
3 R% a/ p' p+ T8 I% S4 a m% e(command "LINE" inv-endpt lend ""); Draws the line 1 d4 S# Z8 x# _% @( |
(redraw) & w4 I: B$ _. S
(entlast)
. ?$ ^! X; g7 A/ i); draw-top-line
6 J T2 a% D" J( Y
/ D6 V) [+ l/ U3 ]; K+ c(defun mir-it (cvent linent / pt) * E1 n% J9 \4 b" O& W: G
(setq pt (dxf 11 linent)) 9 t* v% _: Q* ]" P
(command "MIRROR" cvent "" "MID" pt "0,0" "")
4 ~- u/ l! z4 `3 ^5 G(entlast)
! ]) N& S. b0 b& X- z- V j1 l1 J); mir-it
" q9 n6 ]' Z! l" e @, ?0 V# ]. f5 R A3 J5 J
(defun segment (DR N en / p1 p2 ang dist midp p0 pang 4 D& |9 k5 C- i! k |& m1 v
pang2 p p3 ent3 entl1 entl2 en1 en2) 2 l. B( \# m9 b2 h+ _. H {0 n
(setq p1 (dxf 10 en)
3 n: N8 P. z: p! y/ qp2 (dxf 11 en)
( T) r! M- m' f1 Fang (angle p1 p2)
$ N! p( w4 \: I! m. |3 sdist (/ (distance p1 p2) 2.0)
# F: g+ ]6 m% n5 b6 n) Mmidp (polar p1 ang dist)
\$ \3 b [# Bp0 (list 0 0)
' S# h" Z1 b7 Mpang (angle p0 midp) 6 T$ S4 Z- f2 D. {/ [
pang2 (/ pi N)
9 s6 Z* k8 V3 g, M! Yp (polar p0 pang (/ DR 2.0))
3 I1 b0 m/ k- X/ Fp1 (polar p0 (- pang pang2) (/ DR 2.0))
! A3 J. i; Z# U# Y( G! I. C I0 p+ |p2 (polar p0 (+ pang pang2) (/ DR 2.0))
) o: t$ ?9 k/ f% Mp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) 8 ^5 ?* Q5 j* |, U/ I. [! H" s3 o
ent3 (entlast); This is the tooth p-line 1 L0 S, Q5 G7 b! s
); setq
{( @& h& M: s" k" }' }2 \(command "ZOOM" "W" p3 p1) $ ?. L8 _# n* z! i
(command "CIRCLE" "0,0" "D" DR) ;Root circle # D) d9 v' @4 ~$ [
(command "TRIM" ent3 "" p ""); Trim the root circle 6 F- b1 U+ i Y# x4 I* Q
(command "ZOOM" "P") % D2 r6 T$ s& I8 \
(command "LINE" p0 p1 "")
/ M: K$ G/ w, y, r, V+ U* X(setq entl1 (entlast)) . @' R7 u$ M- K
(command "LINE" p0 p2 "")
3 g) [# o, _: Q7 F! k. w(setq entl2 (entlast)) 8 e n \- \! {$ U5 N' n& c$ r
(command "TRIM" entl1 entl2 "" p3 "") 5 C& S, Q/ N/ Y# b' x9 T4 f
(entdel entl1) , x- |0 W5 Z2 ?) `% f$ s% H
(entdel entl2)
6 ~ p0 b& D2 B8 _0 I8 L(entdel en)
1 G6 x/ s& @+ Z' Q" i(command "ZOOM" "W" p3 p1) / |2 O$ [! t4 V. t4 a# Q# A4 G
(command "PEDIT" p1 "Y" "X") 7 U ?* q9 p' g" P, ~( O* g
(setq en1 (entlast))
5 r6 b9 X/ k4 o(command "PEDIT" p2 "Y" "X")
, G" P, p, j5 R5 q+ b(setq en2 (entlast))
: i: I1 d! ~; h# X& V' A(command "PEDIT" en1 "J" midp en2 "" "X") , @* C4 p" `( P8 w+ @! y! G
(command "ZOOM" "P") j. [+ ?( ]7 w% K
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") ! W- u. q0 I& M7 g8 A# |+ c% |" Y+ Z
); segment , `2 {1 {7 O3 G. U* Y! `: q0 J7 ]* b
; h% S2 f$ O4 N1 C7 V5 C3 F(defun c:sg ()
- m% u9 e+ R. ]7 y(setting)
) ~! K; x: v; h4 b(spurgear)
) v) B4 g: F! ~(resetting)
r/ A3 I8 s, | E+ B* D(princ)
, {1 I _9 x: @8 e); c:sg 6 j% s, M0 z) y. Q7 [5 q
, w0 s$ d. H1 ?(prompt "\n**SPURGEAR.LSP Loaded!") 5 M- O1 Y2 w, l! N. i5 m
(prompt "\n Enter 'SG' to start")
" r, w- P( I# f; m5 y! L4 R8 p" C; G;;;end suprgear.lsp$ k$ r' t" o5 i; I' Z4 s
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的- `% }( h% U/ a2 j8 u' q* K6 e1 v
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输: j3 ^. l. Z' O# M% [$ t9 H
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
楼主
