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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。
/ |3 Y n- @) [$ l- @0 H) P;;;begain suprgear.lsp
7 g8 I1 N+ h& j- q) C+ J;*************************************************
$ j3 s! P4 O# M- f;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
" X+ S% R. w+ j; s) m;-------------------------------------------------
% k" A* o! U5 S; This routine draws a spur gear using joined ' H- l, z( t( A5 x
; polylines. It lets you use any pressure angle
6 M( [) J% _: x# u1 m; to design the gear teeth.
e9 @ ?: d2 C/ e% }$ f U;************************************************* 4 q- f$ [5 h- h
(defun err (s) 0 G: A# \0 S5 q( K& B" ^% J1 Y
(if (= s "Function cancelled")
5 P" J& q( I+ y* m; K8 I$ T(princ "\nSPURGEAR - cancelled: ") 8 z. z' q2 J. {: R6 J, K. p
(progn (princ "\nSPURGEAR - Error: ") (princ s) % x9 e# ~9 w E/ T: m6 P b
(terpri))
+ H& ?/ j" Z8 j8 E); if ! b8 \& n* j- P1 o
(resetting) 7 v; E1 p. r4 N$ {# d6 s6 d3 a' ~% A0 \
(princ "SYSTEM VARIABLES have been reset\n") @0 m' U/ a8 h) ?' M8 P
(princ) * R, z6 e; F% ?1 T. O5 E" r$ K
); err ! v% x! ]6 }; m5 x2 c) p
" o" K; x) Q& v: `% j7 _(defun setv (systvar newval) & _5 K- ~+ {* J+ m- @; _0 j! v
(setq x (read (strcat systvar "1")))
$ v5 _3 M. j& S, y. N% G4 R; j C2 i(set x (getvar systvar)) * \/ \3 Q6 q+ Y" T8 ]% ?
(setvar systvar newval)
" @' c3 H, B/ c1 y# b6 s1 p); setv
1 v+ u( N3 T2 E X
% r2 N6 _0 M( X9 v(defun setting ()
7 {/ T1 X k( s; i2 N# f! o. g(setq oerr *error*) - S! g4 f0 p2 P( M: D5 v; q! v
(setq *error* err)
Q1 A+ s# B' @- f b% l" S3 y3 L(setv "CMDECHO" 0) 4 H: P L9 M8 B q; P @- {3 n
(setv "BLIPMODE" 0)
2 D% r1 F( x4 Y8 d r); end of setting
. u3 i8 _( W( ^4 j" p(defun rsetv (systvar) : ^, U1 h5 K$ H4 Q3 H
(setq x (read (strcat systvar "1"))) , a$ M2 } ?, Y) U8 Q* q) t
(setvar systvar (eval x)) 8 l" u" f, p) {( S* T. U: ^3 I
); restv $ l( i t5 J: \! M
(defun resetting ()
& N7 P# n. e+ S/ g/ }/ u(rsetv "CMDECHO") . n7 ^$ K( D% ]5 p7 I
(rsetv "BLIPMODE")
- o3 ]+ W, R6 O! |(setq *error* oerr) ) O+ T9 T+ h& G' }6 b6 o, E
); end of resetting
) o$ b- A/ N- O! H7 i
& i: U) T; H' C1 `0 h% y6 W+ s P: ?(defun dxf (code ename) ) Y3 E! ~/ Q' C) x; \0 r
(cdr (assoc code (entget ename)))
7 I" X' U1 v8 @- c); dxf 1 [: T% O% k% R& c
# j* S0 {! C& W |* l, F(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
: P2 D6 F. h$ Y# |# N6 Gtrimcode invent p0 p curvent linent linent2 ent2 p2) . |9 P0 q9 t( F0 T3 B
(setq D (getreal "\nPitch diameter: ")
6 o* D& v1 g$ S+ P1 X4 `6 r/ FN (getint "\nNumber of teeth: ")
. f& @ i# `/ x. Uphi (getreal "\nPressure angle: ")
$ d+ }. q2 v$ D Sphi (* (/ phi 180) pi) ; Pressure angle
: Y* f/ l7 H! o9 jDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
, _$ F Z4 T% Y% mRO (/ DO 2.0) ; Outside radius : H4 [& ]* i% l3 {3 Y0 ^
A (/ D N) ; Addendum ' @ R! c1 {* @7 Y5 W( c
B (* 1.25 A) ; Dedendum K" z) E4 I# w$ h9 Y# c
DR (- D (* B 2.0)) ; Root diameter
- x- A: w% K* G* x4 n" X& |3 mDB (* D (cos phi)) ; Base circle dia. ' r. H4 i5 f f. I# k% P8 M
inv-plst (involute DB N phi);involute points 2 Z5 J) H- s: P& }9 \6 T
trimcode nil : u# e: u! S+ y$ N
); setq & ]- l9 J: ^& O# B% F3 w0 v( r
(command "ZOOM" (list 0 (- B)) 1 P+ {) L" P) _9 V7 J' g
(list RO (/ RO 1.5)) * T" ~! l6 m: w+ k" d' m4 P
); command
. ]3 l& ]% ^ T& Y. j) g, ^9 e$ C(setq invent (draw-inv inv-plst)); Draw involute.
{: U Y, b: C(setq p0 (car inv-plst)
) I6 }# M0 _* ]$ L' w! y. r% D4 Qtrimcode (ext-trim p0 DR D);trim or extend 2 N. k" e# T- W! k B& k' W% I7 t+ @5 U
); setq ; the involute.
8 d4 I! w& J* O# H* x+ S& O! q(if (and trimcode (= trimcode 0)) , }9 t% g J+ |7 g1 J
(progn ; Joins the involute to the extension. " ^. P( \4 p$ s G" Z/ b
(setq p (list (/ DR 2.0) 0)) / a0 L) Q! @4 Z; v, s6 l- z
(command "PEDIT" p "Y" "J" invent "" "X")
6 a- z- j: b& p" K4 f$ U(setq curvent (entlast)) , @) ]8 g3 X1 [9 U+ w# j
); progn 6 q( E+ c" T n! p* ~& Y: U
(setq curvent (entlast))
^* S$ T: o/ v& Q5 ~7 N); if 2 r8 a! K" ~* u& b' h
(if (null trimcode) (setq curvent invent))
# Q- h Y) f1 A1 Z t(setq linent (draw-top-line D DB N RO)); top line.
! G' ?! \0 W! ^! }. y/ H5 q(command "COPY" linent "" "0,0" "0,0")
' m5 E+ `" n' u8 L' ~- B8 s(setq linent2 (entlast)) 2 O9 Y0 Y e5 O* E5 ~0 I# o
(setq ent2 (mir-it curvent linent)); mirror curve
0 z5 @, ]7 m1 c4 `(command "PEDIT" curvent "J" linent ent2 "" "X")
, K+ z9 U% g+ u7 q& ?(segment DR N linent2) ; Finish the job! - x# |$ f' L8 D, s- V' i
(setq p1 (list (- RO) (- RO)))
- x$ C8 ^: j( A8 W0 Q& Q(setq p2 (list RO RO)) . g: s, [5 r5 @9 J0 X
(command "ZOOM" p1 p2)
1 `. a2 [4 u& }6 r4 s+ I; D$ U(prompt "\nConverting to POLYLINE, please wait...") ) r2 b( |) c) K) w: u: o, ^
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
5 D8 h% h/ h( Z! F(prompt "\nAll done!") ) p4 M/ `, {8 @- L# i* _& p5 _
); spurgear / j, G1 _' I" x& m% k
# b6 R7 K5 d, f5 C/ V, D
(defun involute (DB N phi / numer denom frac theta2max
* M9 \7 x* p7 `1 Jthetamax theta-inc theta plist RB xval yval p) % t$ G8 z' G" d: L0 c/ f
(setq invfact 3)
, d" M$ W7 |/ d/ {% o# N; K7 N( J) [- m(setq numer (+ N 2.0)
$ c, z( k) l' ~* z; qdenom (* N (cos phi))
; P4 a/ f7 _9 R9 }% i. W+ }8 Ifrac (/ numer denom)
6 c) b" o; }7 U+ g: B3 [theta2max (- (* frac frac) 1) % `' F( E* ?2 Z* H- B% h
thetamax (sqrt theta2max) k2 G' N! W U4 B$ X! r2 `0 m
theta-inc (/ thetamax (float invfact))
6 b) u. T- d1 R% F+ H$ C+ [$ R' ptheta 0
# k4 |( g6 g S% N+ ~, k8 Cplist nil 8 p/ A7 k V8 E9 y. F
RB (/ DB 2.0)
7 L* ~: ^. K, J P8 i/ D# f); setq 8 E; d! h; f$ k
(repeat (1+ invfact) % `7 ]- [. s W2 V0 Y, K% [
(setq xval (do-x RB theta) . f4 E/ U( N. d2 O% c5 {
yval (do-y RB theta) c$ V8 o1 ~& ]' e9 F* ]
p (list xval yval) , ^/ L3 ^& B1 D k4 M6 S$ R
plist (append plist (list p))
! }' ~( w4 x4 d s+ E& A); setq
+ H& f3 W: t& ~ P(setq theta (+ theta theta-inc)) , j) v& b) `9 w7 Q6 G3 V
); repeat + b" ^, D# d3 M" U5 V: l% c5 a$ q
plist
9 A" `$ n3 V3 A2 A0 Q); involute / L6 i4 G6 I% K1 D1 ~4 O
# k3 n3 n+ h1 S4 e7 M2 e2 H1 q(defun do-x (RB theta) J" [ z3 I: S5 ]/ I
(* RB (+ (cos theta) (* theta (sin theta)))) * W% \8 o5 S/ d
); do-x
: Z" O5 Q% Q1 p+ \3 k$ V' [) T2 H2 n/ H1 P) o7 ]0 r0 v
(defun do-y (RB theta)
' h; h/ D3 H& b+ o: Z(* RB (- (sin theta) (* theta (cos theta))))
* X* F( H$ {, x9 A, @8 G); do-y 7 d9 M% p0 m+ _# \( o
3 l/ F/ s7 b0 L$ K3 d6 Z
(defun draw-inv (inv-plst / dirpt plist p) 1 j* O; ?: x5 F D/ l$ o
(command "PLINE" (nth 0 inv-plst))
$ T, ^: h2 j9 K3 f(setq dirpt (polar (nth 0 inv-plst) 0 1))
5 I4 g4 q! O. O9 b( U. d(command "A" "D" dirpt)
+ H' T W2 t X* T- o6 F(setq plist (cdr inv-plst)) - I+ E- U6 ^1 A3 R( _( J
(foreach p plist (command p)) ! B6 z# U2 E, c" ?0 j6 Q$ d" `
(command "")
- m! _2 \2 l @(entlast)
9 ?- _6 g8 h9 D' N+ b+ {6 U); draw-inv 7 J& ^, R: J9 P" g! ]
% t/ I5 Y0 \# L* q/ X& H(defun ext-trim (p0 DR D / trimcode dist endr) 5 M6 A+ K1 a, k9 k6 @8 y* x
(if (> (car p0) (/ DR 2.0)) ; Extends the involute . q* p+ h+ L2 W
(progn
9 W+ k0 ?3 |, v- k(command "LINE" (list (/ DR 2.0) 0) p0 "") ; u' P0 J1 V8 F# V" Q
(setq trimcode 0) ; }$ l" J x3 q9 L+ i) a( I
); progn 1 L( h* `0 q$ T/ ^- Q: B
); if
* s+ c& O* _) V% }5 F(if (< (car p0) (/ DR 2.0)) ; Trims the involute
6 `) W0 d* _: c' E9 i# I(progn
6 x# B) v, M( h% c; }; ?(command "CIRCLE" "0,0" "D" DR); Root circle
& w7 U L: n" y$ e+ Q: X: u! r/ n9 a5 J(setq dist (- (/ D 2.0) (car p0))) # g2 A0 s1 k" ]9 W6 o
(command "ZOOM" p0 . L" x8 m( l# s1 ~! k/ |
(polar p0 0.6 dist)) 6 _# G0 `5 l3 r y7 p0 q
(setq endr (entlast)) $ C3 d" [! I S, w8 W2 a- Y* w: ^1 H
(command "TRIM" endr "" p0 "") , \4 t" _5 ?1 A& Z, D5 @' N8 t
(command "ZOOM" "P")
# h5 |1 D5 |6 \8 O3 T1 l: ^- a; I(entdel endr)
% d2 j5 F) |- i; d6 k* P(setq trimcode 1) . T Y4 D7 C2 _
); progn
( H0 a# X3 w2 P. O" ?); if 7 d$ }2 Y1 P9 _& U
trimcode 9 i+ ]3 K) }# } t% D6 J7 i. V
); ext-trim
2 ^, E( U. u% }+ m8 ?/ K) h5 y; Z" B
(defun draw-top-line (D DB N RO / theta-p xp yp alpha
5 ^5 m8 O* {7 Z8 q+ x9 n2 Tbeta tang angend inv-endpt lend) & X7 I9 o; w ^) x# X0 q+ H
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
0 u7 T- D6 _% H' u# T2 Zxp (do-x (/ DB 2.0) theta-p); This section $ @/ h5 H. n9 [( ^' n4 U6 }
yp (do-y (/ DB 2.0) theta-p); sets up angles
7 h0 K, V" S3 y# p* v% z, t; Ralpha (atan yp xp) ; for drawing a ! M! h& a$ r' V, {; G
abeta (angle (list 0 0) (last inv-plst))
+ I7 z$ w+ j2 a# G6 T( K& Kbeta (- abeta alpha) ; line across the 8 B2 ^- _( J0 R0 D w0 j' A" D# _% y
tang (/ pi N) ; top of a tooth
" j. K b! j! w X9 U3 z1 \angend (- (+ alpha tang) beta)
5 {7 @6 ]; a6 e4 x; ^5 q; C1 l+ `' F- ainv-endpt (last inv-plst); This also creates j7 n; @! s5 ]8 }; X0 V* n1 }& @" S
lend (polar (list 0 0) angend RO); the tooth
6 y J5 B( u. d); setq ; thickness.
8 m. F: R% c; T% L(command "LINE" inv-endpt lend ""); Draws the line
* m7 G& T' M) n% V! U6 e8 h% C) z" m(redraw) # Y/ Q% l2 M- d6 H3 V3 V
(entlast) ; S# v- q7 n. B% ?8 m
); draw-top-line
" W% m/ H1 I; [9 V0 R( H# g' |$ n" h9 @9 T- |$ V
(defun mir-it (cvent linent / pt) ) t0 L& d/ Q$ p1 d, ]9 a
(setq pt (dxf 11 linent)) 0 s) G8 G( x, P! W
(command "MIRROR" cvent "" "MID" pt "0,0" "")
% A" \ ~# Y \$ V }$ O# O(entlast) : h8 V/ u% [9 m; B$ d& N1 ]/ _3 f
); mir-it
7 ?* o1 w5 Y$ v+ b5 G8 Y8 j# ^" [, ^! f
(defun segment (DR N en / p1 p2 ang dist midp p0 pang 0 g# n/ x& p' {/ c& E
pang2 p p3 ent3 entl1 entl2 en1 en2) , \0 ~1 J! Q# G- X+ F4 {! w; |! H
(setq p1 (dxf 10 en) 4 G$ Z7 h+ W( d
p2 (dxf 11 en)
4 ` I7 y5 U6 w0 ]7 Uang (angle p1 p2)
" k; ]3 [5 }+ n: ~* Kdist (/ (distance p1 p2) 2.0)
0 j! ~( t) y, h# Imidp (polar p1 ang dist)
5 `# ]# d. G. I1 p% U. ^5 \p0 (list 0 0)
/ W! u4 y" T0 C) t& Ipang (angle p0 midp)
" b1 s5 R* I! L# {/ p& V, m5 Gpang2 (/ pi N)
( o7 X2 c6 T! I( R$ }2 v; Bp (polar p0 pang (/ DR 2.0))
( f9 O* a6 l. T6 Hp1 (polar p0 (- pang pang2) (/ DR 2.0))
4 |6 t: |# R. G- kp2 (polar p0 (+ pang pang2) (/ DR 2.0)) 0 D5 y8 w5 i4 p8 c0 P! V4 J- P& E& \
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
$ \% A. g1 {! ~1 p! [ent3 (entlast); This is the tooth p-line r: |9 Y7 |# i; X
); setq
$ I5 T: q! }9 l" w$ j. m(command "ZOOM" "W" p3 p1)
1 ?3 `$ S8 g! R7 S P- |(command "CIRCLE" "0,0" "D" DR) ;Root circle / q- e8 P8 b" m/ \0 }6 c/ T
(command "TRIM" ent3 "" p ""); Trim the root circle ' U2 g% S: j7 n/ g( b7 D. {
(command "ZOOM" "P")
* l0 F! E+ C+ { [4 h: [7 E(command "LINE" p0 p1 "") 9 y. T! F+ i! n
(setq entl1 (entlast)) 2 B/ i0 L3 s) @
(command "LINE" p0 p2 "")
7 N! _) s! @4 l! q(setq entl2 (entlast))
- [% B& S2 Y4 }1 M3 a, \$ i( Q(command "TRIM" entl1 entl2 "" p3 "")
' }1 c! c9 j9 C9 H(entdel entl1) 7 r/ ~( O2 X& f! Y9 @" u( B0 E
(entdel entl2)
+ R" |7 W [ B9 @$ u(entdel en)
9 ~* Z d- C) {) d(command "ZOOM" "W" p3 p1)
4 q: N0 d0 E; K$ r(command "PEDIT" p1 "Y" "X") & n) P- j) h i; J$ x
(setq en1 (entlast)) ; [' f4 {) P, v' |7 p2 `6 Q
(command "PEDIT" p2 "Y" "X") 3 p4 j0 ~6 O' Q& @! S0 f& e
(setq en2 (entlast))
4 R* [ d! t; P2 z5 s3 Q2 e(command "PEDIT" en1 "J" midp en2 "" "X") % m3 ~& Q, k! `; [# R9 n# c% M) g
(command "ZOOM" "P") # y. [! E; ?9 P+ w% v: \& U0 s0 N
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") % d* y$ `) D, e# R$ y
); segment 3 W L# s! Z$ k4 O1 Q
W$ T1 P! z4 l7 u" A
(defun c:sg () 6 k; M/ Z3 Y5 ^+ ]- l5 c
(setting) : J5 D# P4 z' H& A0 g$ E
(spurgear) ! ~& T. ?) _6 y) s7 Y; X( O
(resetting) ' f1 P+ D; e8 q3 z) W2 ]
(princ)
: l9 P8 n0 a& O, R$ m); c:sg " F$ T4 T/ g2 n* h6 T; b8 p" _
4 K$ c4 F7 |8 K6 n
(prompt "\n**SPURGEAR.LSP Loaded!") " z: O- [ Y6 J) D( O. ]
(prompt "\n Enter 'SG' to start") 4 g* e) H. f& ~: ^) n5 I- t
;;;end suprgear.lsp |
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发表于 2008-8-25 14:22