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以下就是齿轮渐开线的程序代码，唤起命令是“SG" 怎么加载忘了。* F1 t4 N) V* B0 r! C
;;;begain suprgear.lsp * _" }) F) W4 d [+ T
;*************************************************
5 l: `7 B, k k;SPURGEAR.LSP - a lisp program by Tony Hotchkiss * J) o$ }1 l" M
;-------------------------------------------------
& Y0 Q# }. a! i; This routine draws a spur gear using joined 9 ?7 R' q5 ], x+ f% A! ]5 \; R0 ?
; polylines. It lets you use any pressure angle
9 n6 D9 d5 [ S# N0 t; to design the gear teeth. 6 M& p6 g! U0 w' }, R% E8 k
;************************************************* ' B$ x8 m' a1 M
(defun err (s)
7 N( R3 W+ n1 k; c0 ](if (= s "Function cancelled") 5 l- O( n f3 g
(princ "\nSPURGEAR - cancelled: ")
8 P8 n# u+ L# p: l5 i S9 ~; {' i) ?(progn (princ "\nSPURGEAR - Error: ") (princ s)
p6 L7 R. O i9 j9 Y(terpri))
7 R! x! g# h+ Z0 n); if
( Z1 \! g; S6 K; F, {# p(resetting)
, `2 H6 V% M p(princ "SYSTEM VARIABLES have been reset\n")
[; P9 ~3 E8 R4 W( {(princ)
. R. d: L$ a9 [, f/ L); err : Z1 P/ r0 A: _; ?5 P! l3 `
( O2 w5 B& h- ]- `(defun setv (systvar newval) 3 y4 N3 R( }! V& O
(setq x (read (strcat systvar "1")))
: w$ Q, N+ R% L(set x (getvar systvar))
" R2 ^) P. n' Q0 |2 ~( }& I(setvar systvar newval) # Z5 d/ \0 H! q1 c6 Q6 T
); setv + M) }6 c \$ X% [
d9 f" D+ [3 R" h(defun setting ()
& l" k; }& v6 q: r# P6 z(setq oerr *error*)
, b5 t0 g4 Q8 c% V9 r) a( C(setq *error* err) , J; t1 z" D9 k+ U* G
(setv "CMDECHO" 0)
8 |/ g; E$ m+ O; M(setv "BLIPMODE" 0) % H$ T0 r8 R2 E) F# s6 s5 _
); end of setting & Z6 E. u& |+ W4 M
(defun rsetv (systvar)
- w0 j A z* Q. H2 W+ U; a(setq x (read (strcat systvar "1"))) , F; G9 {; ?: Q$ F2 f( `
(setvar systvar (eval x))
# Z! e% X+ a/ j); restv
! ]* ?1 ]" B4 `& t7 c(defun resetting () 4 j p" M0 ?! Q. f3 w
(rsetv "CMDECHO")
3 d+ G! C" o h% }(rsetv "BLIPMODE")
1 o; b @- ]$ B! q9 s, \. N% }(setq *error* oerr)
. l, F0 B0 b/ V! U6 i0 f); end of resetting
* J# x% ?2 x4 o, ]- W9 b c5 \8 n4 ~' @% j6 ~6 M7 G2 t
(defun dxf (code ename) " g& x* X% Q% c( @! u
(cdr (assoc code (entget ename))) 3 N2 i& E7 o; Y k4 z" B8 h3 l
); dxf
' |/ `" I- H j% |( l! L
9 ~+ v( q6 C8 U5 {(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
D) h6 L& H* A4 w$ `- x$ p8 Ytrimcode invent p0 p curvent linent linent2 ent2 p2)
4 }% z: R3 {% m(setq D (getreal "\nPitch diameter: ") 7 {& ~8 ?% i" @
N (getint "\nNumber of teeth: ") . v* _2 \' Y0 W6 r
phi (getreal "\nPressure angle: ")
4 }" a; t F' ]; N! ]6 \; qphi (* (/ phi 180) pi) ; Pressure angle
1 @% D5 I" ^0 T( w7 P* o1 zDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter . \3 A. U x7 H! t2 I
RO (/ DO 2.0) ; Outside radius
; s3 F. b$ _* c W1 _8 |A (/ D N) ; Addendum 6 k: e# E: Q+ `8 x1 V7 u9 U
B (* 1.25 A) ; Dedendum
p7 ]$ U$ H Q6 y8 DDR (- D (* B 2.0)) ; Root diameter
. w, n! O1 T7 |* n5 k0 j4 {DB (* D (cos phi)) ; Base circle dia.
: u. Z/ g; p1 Binv-plst (involute DB N phi);involute points
. a8 t, b- d" S# i9 Otrimcode nil 5 ]+ H. ~2 [4 T6 ^" _* z# E! Q
); setq # f! S1 h" x; s+ v
(command "ZOOM" (list 0 (- B))
- N5 ]7 A+ P# T(list RO (/ RO 1.5)) " A& r! L- ]+ K: i$ y" H' x
); command + Y% ^" i. b( ~0 U5 U) @
(setq invent (draw-inv inv-plst)); Draw involute.
b$ e. p1 z! u: {* W6 w(setq p0 (car inv-plst)
+ [/ h0 r& j) B6 N# C* L1 Atrimcode (ext-trim p0 DR D);trim or extend
; ~( S" o! E! s, f); setq ; the involute.
$ g! S6 {* ?( _(if (and trimcode (= trimcode 0))
$ \' e* z% Q" e( _4 E( d0 I(progn ; Joins the involute to the extension. , ^# M) y) n/ \) B# D( P1 Y6 c* h
(setq p (list (/ DR 2.0) 0))
- n# _* T+ V0 T, @) ?0 a0 V! S(command "PEDIT" p "Y" "J" invent "" "X")
4 e% l; w$ O% x(setq curvent (entlast)) , q6 _9 P) U" b2 B* B# u; [( k
); progn }! T6 L' @+ v2 M
(setq curvent (entlast)) * ]- }4 v+ d8 j* {! k+ T" m2 c
); if 7 `: P5 ^! p |9 V4 _ p( \
(if (null trimcode) (setq curvent invent)) - c; v% |! M/ G7 [, V; L) p' O' T
(setq linent (draw-top-line D DB N RO)); top line.
! ]) v* }& M1 ]2 ~& C: \1 j, O% q2 [, W2 C(command "COPY" linent "" "0,0" "0,0")
9 @" ], X, u! n( {. k f# q(setq linent2 (entlast))
9 ?+ _: O5 W% k( K: c% {3 f" Q(setq ent2 (mir-it curvent linent)); mirror curve % d6 N- L# Y2 T/ m+ E
(command "PEDIT" curvent "J" linent ent2 "" "X")
+ R' k, j( u5 L& r" ]4 g4 \ T(segment DR N linent2) ; Finish the job! 2 Q' a9 B# r i/ p) ?2 m" @; V( [
(setq p1 (list (- RO) (- RO)))
. t0 [: h. e; D0 W# l(setq p2 (list RO RO))
( k1 p, S$ ^8 U1 h c(command "ZOOM" p1 p2) 2 B2 g1 @! P6 g' D7 P% p% O7 j$ G9 @
(prompt "\nConverting to POLYLINE, please wait...")
% T' J& \ D8 t( t(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
. i; S" T6 B4 a1 ^, Z# y6 k(prompt "\nAll done!")
: H8 ^( y- W7 d; z+ x); spurgear f5 a6 E9 S A3 ~
7 z5 b0 [$ D% b9 I9 y4 E& u
(defun involute (DB N phi / numer denom frac theta2max : |8 v4 Z. W( `# ~: d) E: A
thetamax theta-inc theta plist RB xval yval p) 8 @. i8 l r% y! |9 d) V
(setq invfact 3) 0 }; L( t# f$ s; o9 | E
(setq numer (+ N 2.0)
) @" a' ~6 t$ x# j" z' h6 a2 ndenom (* N (cos phi))
; g2 h Z8 @" O2 F2 ?frac (/ numer denom)
( B( t, n2 w- P7 F/ A5 \1 [8 m: ztheta2max (- (* frac frac) 1) : H( A: J# ^! M3 S2 s2 [% ^
thetamax (sqrt theta2max)
[; y; U5 R) l; G9 V6 r3 dtheta-inc (/ thetamax (float invfact))
0 s) b, {/ I* E/ v- q( {theta 0
, [; _* _1 R7 K+ S0 v0 lplist nil N$ Y6 @ @/ z' G% U4 P; @, ]
RB (/ DB 2.0)
/ i' I# I8 [+ k4 O4 L); setq
! j, N+ ^' u" J(repeat (1+ invfact) \* L( m5 \2 G/ f# G
(setq xval (do-x RB theta) 6 q4 A d/ i S) E& s
yval (do-y RB theta)
+ G" V+ t% e& vp (list xval yval) : K7 [6 d, u5 t. ^8 \* O6 u
plist (append plist (list p))
2 |3 x/ S. ^. a; d); setq 3 I" n2 v y. y, R: Z
(setq theta (+ theta theta-inc)) % w, I/ S/ v/ B
); repeat
' C p3 g8 r( `$ S! ^plist / d' L9 ?$ C& s* h4 b
); involute
8 g0 _+ j) H+ o h, A* U5 ^" c+ G0 T8 M4 h; M- ^
(defun do-x (RB theta) * U- P& s- c4 E# P5 r
(* RB (+ (cos theta) (* theta (sin theta)))) % {0 {3 D0 C1 O
); do-x
% k. L' D& g, i: [; O+ P2 \% n' q$ G! j8 p
(defun do-y (RB theta)
) Y( }7 ^1 y" p* A5 q$ A(* RB (- (sin theta) (* theta (cos theta)))) : J2 Z1 Q7 @2 t" ^
); do-y 2 h) w& [8 E: r% o& W
7 ?: K0 f8 z+ J4 p+ Q9 M- {
(defun draw-inv (inv-plst / dirpt plist p)
% S( r( s- V4 Z/ @. j" O(command "PLINE" (nth 0 inv-plst))
4 r/ P7 K% D/ t4 E(setq dirpt (polar (nth 0 inv-plst) 0 1)) 4 C3 E, E5 ]7 b, w
(command "A" "D" dirpt)
: y; I2 _, h6 k( M% T2 D(setq plist (cdr inv-plst)) A7 E) M q* o/ ^$ ~" }; v
(foreach p plist (command p)) 1 x2 H5 ]+ n- S6 g* e
(command "")
6 e) K) b. N3 Q6 F(entlast) 5 Y# c: Q- v/ \7 w
); draw-inv
0 ]' K1 y6 w8 `7 N; s) J* {/ U9 L) M( g
(defun ext-trim (p0 DR D / trimcode dist endr)
# X2 V( G: y4 p2 |& A& i" j(if (> (car p0) (/ DR 2.0)) ; Extends the involute + S0 W- v C3 J! o( Z/ |
(progn
8 W: s6 X0 y) k+ n+ F1 t+ T; A" j0 n(command "LINE" (list (/ DR 2.0) 0) p0 "") 9 A7 ^9 f0 i8 J/ [7 q
(setq trimcode 0)
+ E+ b! ~8 t0 l5 C% @) Y); progn
0 K- S/ v7 ~# q* ?. T/ y); if / _6 s2 _8 h8 | s& A6 J0 S* p
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
: d) r' b9 F' Y- o) u/ p(progn
) d2 y) L7 e1 w, R# C) z- J(command "CIRCLE" "0,0" "D" DR); Root circle 1 g4 y8 S Q; S
(setq dist (- (/ D 2.0) (car p0))) * @* ?7 Q9 }1 K. d
(command "ZOOM" p0 , Z6 w- x4 G$ l8 D6 W
(polar p0 0.6 dist)) " W. r5 Q) {8 m0 r1 m
(setq endr (entlast)) + \) ?3 R' E% ~9 \) _5 J' ]+ C4 `
(command "TRIM" endr "" p0 "") ; ^/ q$ L" M7 T. p
(command "ZOOM" "P")
6 \: C% v4 o x(entdel endr)
- f, S# \! \ Q. P+ }5 O(setq trimcode 1)
, ^7 s$ A$ I n' r); progn
1 z. ^- f, n/ t8 a# N# \/ x); if 3 c$ N. F5 E% g6 q5 y
trimcode
; z4 W0 X6 q3 y7 |); ext-trim
8 z8 b/ r' |: g3 t j7 {* n
9 P v$ E5 j5 y2 [2 c! b(defun draw-top-line (D DB N RO / theta-p xp yp alpha 6 j v) H; D) @" ?* J$ b7 b" |0 j' _& t
beta tang angend inv-endpt lend)
/ ?( F' y9 m F% d1 _(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) l6 a2 F, `4 @# O5 F: [0 q' C
xp (do-x (/ DB 2.0) theta-p); This section
3 J2 i% n$ Q" M! O0 ]3 d3 }yp (do-y (/ DB 2.0) theta-p); sets up angles
0 f* M: m# Q3 }3 r2 v4 `3 j+ j5 D, R, Galpha (atan yp xp) ; for drawing a
) n; m- ?2 p8 q! d2 F0 v9 Vabeta (angle (list 0 0) (last inv-plst)) - ~, U4 q" t0 x. G( M
beta (- abeta alpha) ; line across the
( Q. q/ }: q( G7 b1 Etang (/ pi N) ; top of a tooth . \' U6 q V. o; s$ _4 U
angend (- (+ alpha tang) beta) 6 n, n* H3 f% N( m4 S
inv-endpt (last inv-plst); This also creates " Q! ~' w5 O) P& N+ \0 {
lend (polar (list 0 0) angend RO); the tooth 0 U) N( ^9 i, D! K j9 }! ^: w
); setq ; thickness.
: g$ b$ Y0 P5 z; O(command "LINE" inv-endpt lend ""); Draws the line
3 j) j5 N/ R/ l# ^9 v Z. L(redraw)
* G. N9 l3 F& I% E k4 c! T3 v( v# ?(entlast)
, X+ _; [3 q. `); draw-top-line 7 U, @& g6 c' j3 D& V- @& ^
2 A: L! `' O6 t' J% Q, k(defun mir-it (cvent linent / pt)
+ W& u# F2 v4 a! u) B(setq pt (dxf 11 linent))
7 v8 E( m; w- J7 w6 M+ B(command "MIRROR" cvent "" "MID" pt "0,0" "")
- M& D; [1 m, [4 J(entlast)
6 i* w* M" h {5 C); mir-it
% A" N H/ Q6 y, j3 @ m
* A8 w! @5 I) X(defun segment (DR N en / p1 p2 ang dist midp p0 pang
+ P& Y7 z4 s) ipang2 p p3 ent3 entl1 entl2 en1 en2) 2 x, B l {$ z2 N3 ]: o( {2 M
(setq p1 (dxf 10 en) 3 D& a6 I- w* f: m6 m, x9 c$ x
p2 (dxf 11 en)
9 ?3 T( G2 j" g2 A$ @9 Wang (angle p1 p2)
' {+ m& Z9 c5 B0 U. I( d$ U0 gdist (/ (distance p1 p2) 2.0) 9 {' m; R3 b' W+ G% _+ `8 l
midp (polar p1 ang dist) , B( Y7 V E% g3 A6 ^- O# C2 Q! w
p0 (list 0 0)
9 o1 v R! Q& c5 X, s3 Apang (angle p0 midp)
8 o" U+ A1 C$ Cpang2 (/ pi N)
8 y3 M7 X9 N# B: w; Xp (polar p0 pang (/ DR 2.0)) 8 ~" u7 p3 G4 I) T1 z. |2 o
p1 (polar p0 (- pang pang2) (/ DR 2.0))
5 M4 B- m) Z! X: wp2 (polar p0 (+ pang pang2) (/ DR 2.0))
! {' z" |2 r: a/ Y0 d/ Lp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) ! M8 i$ \, A" S
ent3 (entlast); This is the tooth p-line
! [, H5 a2 j R$ F( f); setq
( D: n9 c- L3 s(command "ZOOM" "W" p3 p1) 0 w+ i! n* y2 K; C. D, q3 s
(command "CIRCLE" "0,0" "D" DR) ;Root circle
% ^- k" h3 [) d7 c(command "TRIM" ent3 "" p ""); Trim the root circle 7 \5 x+ @* ?. D. X
(command "ZOOM" "P") ' E0 V: H. R5 G' Q
(command "LINE" p0 p1 "") . C1 _% @* s0 N7 P* O$ |. @! r' o9 d
(setq entl1 (entlast))
" |8 b/ F; [, O$ A; O4 P8 {8 h(command "LINE" p0 p2 "")
* a& }# k4 \( o* j(setq entl2 (entlast))
3 s k0 i7 ?2 ~# B* F2 N& @(command "TRIM" entl1 entl2 "" p3 "")
- f3 [; Q" u3 s( C8 F* U(entdel entl1) 7 n. `. m" T0 C" C
(entdel entl2) : `- }, u t$ o( o% M8 p6 o
(entdel en) ( ]5 w2 s! U, U4 o% ]# L, T
(command "ZOOM" "W" p3 p1)
5 F2 I/ U" u: R! e* _) M6 r% n(command "PEDIT" p1 "Y" "X") ( K5 @; k/ h# S4 a3 h% D
(setq en1 (entlast))
7 C' y. ]0 T0 g7 o' z8 r(command "PEDIT" p2 "Y" "X")
; l8 t! E$ K8 Z _+ C; M(setq en2 (entlast))
6 H a4 d1 [) ?, r9 F5 b+ N(command "PEDIT" en1 "J" midp en2 "" "X")
! Y, s8 Y0 q D8 T(command "ZOOM" "P") 6 j" }0 ]- V5 r) U2 ?( l
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
2 D% p% g4 e4 f; d; Q); segment ; N0 d1 N! L" j: ?& O0 E
% J; G8 k# B- d1 {: j' b# x(defun c:sg () ) B/ `* T7 n" H# o
(setting) ' A( B; q* Y7 T6 _+ ~/ N
(spurgear) 2 V* A4 P5 B; w2 g/ _
(resetting) ( X1 s: H' w( F* V0 K! Q. d
(princ)
+ E, f: u- Z& g1 ]. q" a); c:sg
$ U3 x3 h2 F7 A& U+ ]1 P! p* L& Z( `
) K* N0 L2 v' x+ e(prompt "\n**SPURGEAR.LSP Loaded!")
; o1 n- a% G }7 U(prompt "\n Enter 'SG' to start")
) d; d8 I; i% ?;;;end suprgear.lsp |
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发表于 2008-8-25 14:22