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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。
6 ^9 x( W9 X$ V: ]/ C) t5 e;;;begain suprgear.lsp
5 ]& x# h' c* ~1 r0 l! ?" H9 _;************************************************* 8 ^7 P% m6 p9 d) y
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
) G+ Q6 W/ t6 C3 b" g5 @;-------------------------------------------------
" F% a( g, Z8 }' |$ h; This routine draws a spur gear using joined
1 A( j. ~# ]8 ^/ K; polylines. It lets you use any pressure angle . ^9 z1 T% Y: x6 P; n" P
; to design the gear teeth.
" R: _2 Y, r) U6 I3 k& B. U2 [;*************************************************
3 x- ~, ?$ l/ L9 T# f! i5 w(defun err (s)
1 D, j: s: X9 F(if (= s "Function cancelled") + d4 \* \0 @$ b/ Z% E2 b
(princ "\nSPURGEAR - cancelled: ")
; p# J& v3 k" u1 s! B( [(progn (princ "\nSPURGEAR - Error: ") (princ s)
4 q8 R3 T( ~: _: O6 O" a) H(terpri)) 1 D4 r2 O- w# ~* f/ e7 h6 X
); if ; ?4 w, k' n0 \6 R) \& U1 z: c
(resetting)
* w$ q8 n0 X3 s; |) K! I7 A" [( O5 F(princ "SYSTEM VARIABLES have been reset\n") . W) v- Y& u0 `+ |8 x( u! S! O
(princ)
4 Z, {! L3 m. k5 W$ K# t1 g6 W7 G); err
$ y# h6 I! ?. E3 M8 u
7 N$ K/ Q' x" K! @4 E* ?6 A3 N(defun setv (systvar newval)
+ h1 a# L5 X' D+ l! I; ~. H(setq x (read (strcat systvar "1"))) 6 f5 ^0 T x: }1 a
(set x (getvar systvar)) ; M" B3 {8 Q; I L' h# b5 W6 W
(setvar systvar newval)
; d M* @+ q8 f0 Q: o); setv ) n4 \2 b3 s$ r6 e) S- r' S
+ N( F2 s4 o0 i5 Y F3 S(defun setting ()
( ~4 J. C' b& M0 ^5 \3 t7 s% O+ Y8 Z(setq oerr *error*)
$ S- ]* y* L9 y5 d(setq *error* err) - K' H$ c' x4 O
(setv "CMDECHO" 0)
; b7 ~7 ` _7 Z- K: a' P(setv "BLIPMODE" 0) 1 [0 [' q" B4 \
); end of setting
- {/ l7 `+ V; C; H% ~' t4 S" {0 `(defun rsetv (systvar)
5 ]" f2 I# |9 T# S4 ], z& i(setq x (read (strcat systvar "1")))
, t. K+ g# W/ Y7 t(setvar systvar (eval x))
2 ^. F3 ?8 ^ p9 U- G5 l); restv
5 a6 c& j+ I2 D(defun resetting () * E5 I; p( f4 M/ z( n7 S
(rsetv "CMDECHO")
+ r- i$ i" g9 f+ J(rsetv "BLIPMODE") 6 X: y8 d3 W+ s2 N4 e9 E$ w i& u; M
(setq *error* oerr)
: V# i% \/ a( @2 h" x0 L5 r/ T); end of resetting 1 ~) ^: M9 l3 r9 \
u! A w- W3 f$ g( K8 P( Q(defun dxf (code ename) 0 ~5 I7 y, d8 E1 @. M+ o* W
(cdr (assoc code (entget ename))) & G8 [+ i4 W0 R: Y2 \' L
); dxf 4 K$ I* `- e5 u& F0 s1 E
% n: V$ h/ R( @% Y(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 : f6 V7 o, @/ S, `" T
trimcode invent p0 p curvent linent linent2 ent2 p2)
3 X3 H0 Q7 v! C(setq D (getreal "\nPitch diameter: ")
1 s' I# n X- R; Q- \/ L: J8 WN (getint "\nNumber of teeth: ")
# w. I* b; X& i( N1 Aphi (getreal "\nPressure angle: ") + K. K6 ^# ]3 t
phi (* (/ phi 180) pi) ; Pressure angle
: r% d0 X. h. z w7 c% Q; FDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
* Q* z3 y, m8 m3 l2 q. l7 WRO (/ DO 2.0) ; Outside radius
; ^2 `, E x- ]; G& HA (/ D N) ; Addendum ! ^7 a" t4 e& {7 n. @
B (* 1.25 A) ; Dedendum 4 g' D" j' X! M6 K
DR (- D (* B 2.0)) ; Root diameter & p5 m, Y' f- z6 ?4 M3 e% _
DB (* D (cos phi)) ; Base circle dia.
3 g) t& H& O4 j# ~* W1 s. U* h' f/ {inv-plst (involute DB N phi);involute points
$ H5 f8 C! |! E7 H {! C$ _% mtrimcode nil # m6 W) l% `( @) u
); setq 3 t% |( j- [# ?
(command "ZOOM" (list 0 (- B))
' L/ C8 o; m/ H' I(list RO (/ RO 1.5)) . k: q7 j/ U5 B/ `# Z9 L9 H0 d0 f8 L) v
); command
( D+ a4 b5 `) B" v: c(setq invent (draw-inv inv-plst)); Draw involute. ; N7 ^0 p, W% D F! F" ?" B3 Z
(setq p0 (car inv-plst) ! g+ S3 j: w- k
trimcode (ext-trim p0 DR D);trim or extend & x* I+ n/ w5 p& T; G' B
); setq ; the involute. + p T( ~2 P1 e$ `) J% B
(if (and trimcode (= trimcode 0))
; \! @ H5 {5 R(progn ; Joins the involute to the extension.
( u% J, \; ?2 F2 u6 U9 S(setq p (list (/ DR 2.0) 0))
* U+ d1 n; h. [: L! S( ?(command "PEDIT" p "Y" "J" invent "" "X") 7 }/ S( a5 \4 X8 y" u6 W
(setq curvent (entlast)) 2 R4 Y; v R$ n6 ]2 E
); progn ( X" K& t7 ^7 ?+ {; W4 }
(setq curvent (entlast)) ! a0 S5 B0 q0 m. k
); if % M7 n6 R! n! a! E; l" L, }
(if (null trimcode) (setq curvent invent)) 9 n/ q( H$ z6 q) k$ C
(setq linent (draw-top-line D DB N RO)); top line. / t$ }+ j/ c, A0 f& ~
(command "COPY" linent "" "0,0" "0,0")
0 Q/ {+ M; l4 l* X7 y(setq linent2 (entlast)) - f) X$ O: O0 [/ J; U& a
(setq ent2 (mir-it curvent linent)); mirror curve ! ~) U2 L/ i4 S* n5 V
(command "PEDIT" curvent "J" linent ent2 "" "X")
# C/ @ _9 s1 H; v4 R) P(segment DR N linent2) ; Finish the job!
* b6 k$ z" J+ ^) ~ B B(setq p1 (list (- RO) (- RO))) ' o9 S6 G ?3 g. {5 e
(setq p2 (list RO RO))
. O! p* k, J$ k. L: N! W3 `" h2 B(command "ZOOM" p1 p2) 5 B: w) F+ K1 |
(prompt "\nConverting to POLYLINE, please wait...") 0 x1 k2 [% ?% s3 b; X3 g
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") ' Z- U; s& V# K% O( X4 _
(prompt "\nAll done!") 2 X" v! N: ~: X
); spurgear 3 f$ u' r- X$ R- \; q a! l- I+ D* l G
5 r) z9 p2 |4 |4 K5 K
(defun involute (DB N phi / numer denom frac theta2max ( G+ u' n1 F& E
thetamax theta-inc theta plist RB xval yval p) , W M+ ^& @8 c
(setq invfact 3)
1 ]* g+ ^( O9 t7 I+ k6 X/ u% h(setq numer (+ N 2.0) - H. A) S7 C" b- R O8 p( E
denom (* N (cos phi))
$ b4 [, c( Y8 V% Afrac (/ numer denom)
& s, U' n* {: ^0 itheta2max (- (* frac frac) 1)
$ g7 Z& e+ p2 m$ z- B dthetamax (sqrt theta2max)
$ }- z1 e2 R( G {theta-inc (/ thetamax (float invfact))
0 x* v5 S# Z J% O+ H9 I H [$ ttheta 0
" }7 J: u. T% n$ ]2 w* [plist nil
% N( k$ i3 M9 j$ f$ yRB (/ DB 2.0) ' s5 q/ ?+ s9 [5 D/ o
); setq
: G% _" Z0 o8 F$ D7 _(repeat (1+ invfact)
8 H% v. n0 L/ V$ S( A(setq xval (do-x RB theta)
# c/ @/ F1 L* G; kyval (do-y RB theta)
# \0 v9 u. S8 K( c/ wp (list xval yval)
5 D' g2 L5 y9 F$ g$ r3 Eplist (append plist (list p)) # Y) e: x1 q' n# R
); setq
; C1 f0 `7 V& K! s) Q+ R2 \(setq theta (+ theta theta-inc)) 2 M- _4 `2 t' j v" e
); repeat
- P' k/ C4 ~, }% rplist 5 j$ ]5 H+ Z- V& c& F/ B7 J2 Y
); involute
: o v8 D# u8 ?0 X2 I9 d# Y
" o, _# c5 f% V$ R- T(defun do-x (RB theta) ( l5 L. K2 P: G: `) |' D
(* RB (+ (cos theta) (* theta (sin theta))))
+ o& H- U$ R* [* O- [); do-x
7 d3 S3 w$ r$ |4 V. L- H
. ~& `; W: S/ i4 w5 y" F, b+ U(defun do-y (RB theta)
6 p4 u- \* {) g5 `) v9 Z# B( q; _(* RB (- (sin theta) (* theta (cos theta)))) ( F5 N5 @2 {$ W! F/ K& G& ?) T- k
); do-y
8 r2 y5 ]/ T1 u- k; _, r/ M8 H& W5 V+ g. C/ }" T
(defun draw-inv (inv-plst / dirpt plist p) + S2 e% ]! _$ K
(command "PLINE" (nth 0 inv-plst)) , b" x5 X) a4 I, d& Z, D
(setq dirpt (polar (nth 0 inv-plst) 0 1))
. l+ n4 `6 A2 b(command "A" "D" dirpt)
( x( M" B( W! l! M. J. f(setq plist (cdr inv-plst))
! d. U( I6 i5 @: u/ ~(foreach p plist (command p))
0 r- b7 k1 A' k! e) z% ], T9 ^(command "")
7 Z' Y" [& G% D' K ^2 G(entlast)
9 ^2 D5 R7 y5 U; x6 }% I); draw-inv
) ?; C4 r2 P" I, ^" }) H& u. J6 S$ S+ Q7 q: {1 n; T
(defun ext-trim (p0 DR D / trimcode dist endr) 6 R, ^6 D4 w# t! T
(if (> (car p0) (/ DR 2.0)) ; Extends the involute - H! x: Z$ M; w' H' L1 J7 j, [# O
(progn
( c u# b, n4 x; Q8 k(command "LINE" (list (/ DR 2.0) 0) p0 "") ) D+ a. h1 N/ W
(setq trimcode 0)
2 i4 _0 c! ]5 t6 D7 `' w); progn
, i* F$ j: K, N% R J2 s); if 8 Z! v/ i. r/ E' s
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
" G0 d4 r+ @ ]" S" _7 |(progn ! [ J3 t! A! a* t& W
(command "CIRCLE" "0,0" "D" DR); Root circle
* v! Q' W2 u0 g9 e(setq dist (- (/ D 2.0) (car p0)))
+ V: y, }; A" g1 x$ P(command "ZOOM" p0
/ E. Q( X/ ]" Z" e: L# c(polar p0 0.6 dist)) 0 j) M) l$ b+ J6 v% g
(setq endr (entlast))
) K0 j+ x/ Z% I& D(command "TRIM" endr "" p0 "")
* L# Q0 K( [ M# ?(command "ZOOM" "P") # f& T3 G& ^4 Q9 P
(entdel endr)
' \! W, R3 `& }( ^(setq trimcode 1) : h5 ?6 H9 F( O, g
); progn
' P$ ]% U* `9 B1 h+ r); if $ M# Z0 N! c* O6 e
trimcode 1 L) G3 p- ]$ R) V; e3 c
); ext-trim ) v. N5 V' |( H3 q1 i# m
3 @- L2 e4 i% T" r
(defun draw-top-line (D DB N RO / theta-p xp yp alpha ?# l% \ o2 W
beta tang angend inv-endpt lend) 0 `' k# u6 A* D0 y- p: u2 E" n1 o
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
7 j! R9 c2 \# w% zxp (do-x (/ DB 2.0) theta-p); This section
. {# G( R- K" P% P6 d6 t) ryp (do-y (/ DB 2.0) theta-p); sets up angles " V! y5 t- ]7 u5 w
alpha (atan yp xp) ; for drawing a
6 v: Z2 d& U( ~8 ~& q( eabeta (angle (list 0 0) (last inv-plst)) ; A) L U* m; R4 J6 I' v
beta (- abeta alpha) ; line across the 1 A0 k/ X, I* A+ x2 Q
tang (/ pi N) ; top of a tooth - g/ j6 ?3 H& `/ `; p, N a5 r
angend (- (+ alpha tang) beta)
2 C0 L( {! A) H+ ~( }) finv-endpt (last inv-plst); This also creates
( \0 F) I* q% T# a @6 r- vlend (polar (list 0 0) angend RO); the tooth
& f, g+ a0 _# p6 C) t( s+ J); setq ; thickness. + r( ]5 E2 L! L' E, [
(command "LINE" inv-endpt lend ""); Draws the line
2 m) G. B9 u0 `/ _/ Z$ e* k(redraw) , L+ r u% n( A2 C1 A. }
(entlast) 0 v! K1 x0 C% C% k1 C
); draw-top-line ) ^( C# k2 v2 E4 @4 M% S8 b2 H# D
( }, B0 _% O- H a1 ](defun mir-it (cvent linent / pt) 3 z k2 Q" z) M' t7 z! A
(setq pt (dxf 11 linent)) " n6 E$ f3 B5 f- v( z( J+ R
(command "MIRROR" cvent "" "MID" pt "0,0" "")
5 t+ J+ `9 C% A, x$ u+ F( n( F# I9 Y(entlast) ! ~# [2 a1 g+ u/ }4 e
); mir-it
/ d$ O& i- y, c6 e3 _/ }* ]
1 M9 `7 r7 P4 E1 }; ?(defun segment (DR N en / p1 p2 ang dist midp p0 pang
0 G1 A& X% t5 Y5 s1 u0 Opang2 p p3 ent3 entl1 entl2 en1 en2) / S6 P% g9 q3 b$ P( z+ [% p
(setq p1 (dxf 10 en)
, S& f. ~& ?; u' C2 g! R3 sp2 (dxf 11 en)
+ p+ J' I/ z/ _9 v4 Fang (angle p1 p2)
& {9 ~$ x5 `: I0 c3 fdist (/ (distance p1 p2) 2.0) - j! w7 r1 T" E: K
midp (polar p1 ang dist)
" j# W3 \0 `5 q9 v/ kp0 (list 0 0)
: F1 t) Y" R ]3 ^( Vpang (angle p0 midp) : S' Z5 R. h; q- E3 K' H
pang2 (/ pi N) ' b) q( \, w4 x0 c9 S
p (polar p0 pang (/ DR 2.0)) 2 @, y% i, C( F/ h
p1 (polar p0 (- pang pang2) (/ DR 2.0)) , F3 `: r7 Z" P* t" V6 j, V
p2 (polar p0 (+ pang pang2) (/ DR 2.0))
! R& Z9 _# N% q- z7 j& G2 v" Bp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) & b0 u7 p* k$ U; j( ^* L
ent3 (entlast); This is the tooth p-line
, H! M4 _( }( }0 g- |); setq
, ]$ v! X O3 {( d(command "ZOOM" "W" p3 p1)
9 B9 p( n$ ~/ L5 V/ X8 }( n- Y(command "CIRCLE" "0,0" "D" DR) ;Root circle 1 B& v( Q& n' M* C+ B
(command "TRIM" ent3 "" p ""); Trim the root circle 4 w* A# f3 H* G6 G( M" p
(command "ZOOM" "P") ) g% {7 L* G: o/ y
(command "LINE" p0 p1 "")
' c$ E$ g( r( L& }# d7 Y# `6 ?2 N+ D(setq entl1 (entlast)) - @" d+ V. A* T$ I
(command "LINE" p0 p2 "") & n( f, L! w1 f5 z7 \2 V$ I9 I
(setq entl2 (entlast)) b9 h7 I4 T! p3 c, }
(command "TRIM" entl1 entl2 "" p3 "") ( G, E- \. f" F0 }' R
(entdel entl1)
/ `2 O& U7 c" q% p F(entdel entl2)
( c; ^, }' b9 e1 n(entdel en) # V: n% a. ?0 e7 D5 |- r
(command "ZOOM" "W" p3 p1) 8 B, ]: Z2 t3 N8 C
(command "PEDIT" p1 "Y" "X")
5 @3 ?! y* ?6 s6 _- W! z(setq en1 (entlast)) 7 X6 B$ g7 J8 e& V1 D. }0 T8 L
(command "PEDIT" p2 "Y" "X")
5 o1 _) B/ F' W. i; c. p( i(setq en2 (entlast))
3 n7 r k8 B2 D" L(command "PEDIT" en1 "J" midp en2 "" "X")
6 _+ L; B. l+ y. l3 w0 {(command "ZOOM" "P")
5 {% l7 [9 r6 D4 q(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") * J/ t$ N- y" E/ h4 s# Q
); segment
2 N U+ r- Z5 `/ i: e8 J5 @1 D+ D" ~. w
(defun c:sg ()
3 d9 x: m1 Q3 m i6 l& A(setting) / J4 E8 S2 m! g# R* F. m
(spurgear)
% g5 v) P6 T9 `(resetting) 2 Z9 z, @- D4 X
(princ)
R# O8 p: h$ K4 R( c2 F, z); c:sg , [9 g( \) S w% H2 {" j# }2 J7 y3 C
! Y: K3 o U: M
(prompt "\n**SPURGEAR.LSP Loaded!")
2 E, r. Z' M d" I1 b5 I6 M(prompt "\n Enter 'SG' to start")
% x7 M( U+ h& h2 q' n& W4 ^;;;end suprgear.lsp |
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发表于 2008-8-25 14:22