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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。+ x% ]7 R- X* E7 \
;;;begain suprgear.lsp 8 M; P$ h0 n6 G) q& a7 ~ Q
;************************************************* # i7 c- L# P" ^& q# S* Q: Z& d
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss 6 U6 T9 {! P6 U% C+ v
;-------------------------------------------------
# w0 J% K) F" w/ n' x; This routine draws a spur gear using joined ; j6 \1 C: x2 [1 k5 ~
; polylines. It lets you use any pressure angle
1 c; i$ L: F q4 T2 G6 O; to design the gear teeth. - ~9 J0 {( @9 f6 G+ i" ~3 \) G3 \
;*************************************************
7 W3 Y1 r6 Q# d- Q(defun err (s) $ a& x( [4 x. b3 T" X
(if (= s "Function cancelled") & P& p9 m8 K" |. G
(princ "\nSPURGEAR - cancelled: ")
, o/ V* J8 m0 n6 J(progn (princ "\nSPURGEAR - Error: ") (princ s)
# G7 q* h- [7 m- l+ a* D3 W(terpri)) . U. ^! `& _2 M8 \" M
); if 5 H9 K% R% U* [+ }2 h4 B; y2 K
(resetting) " z! l! p H& q3 O6 m# C
(princ "SYSTEM VARIABLES have been reset\n")
" |/ c# G& ], e' M0 M: p( [& T(princ) ! O5 W; Q5 D. l+ R; L2 g6 L
); err ) }: h# J# L; w& p& h
. J; w5 R f, @% C1 S+ y
(defun setv (systvar newval)
8 Y- j( _9 }' N(setq x (read (strcat systvar "1"))) % E# C0 T8 s' P- k. B
(set x (getvar systvar)) 3 m `; \4 s+ P- p; F/ \$ l' e
(setvar systvar newval)
( D( C' F0 g6 W- y( ]); setv
! H: W6 F+ P! n$ Y: ~* U. {+ w6 P' v+ @: \2 _& L) q
(defun setting ()
+ G/ i' `% D' ?" n/ H: C(setq oerr *error*) 3 p, _1 h4 W* |4 Z! x8 r
(setq *error* err) 2 H6 ?8 s% ~; |) J' x6 h$ c, \ z
(setv "CMDECHO" 0) 6 b A) {0 t @- G. Q: R
(setv "BLIPMODE" 0) ' H) c5 S+ ?$ o7 L3 y! C1 j
); end of setting 4 w( A6 W; P9 y) T+ z8 p, T
(defun rsetv (systvar) 7 B2 F) n: O# K1 s- _
(setq x (read (strcat systvar "1")))
* F* v( Q! E! X, K* J) F! g# D! f(setvar systvar (eval x)) ' B! G( q0 G7 }( @) |3 x
); restv
! n( i& q! c1 y2 j0 T8 x(defun resetting () 1 H! O* U3 t0 g0 ?
(rsetv "CMDECHO") / W9 a0 Q2 G5 Q) X
(rsetv "BLIPMODE")
k6 Q' b3 N0 R& D7 k5 B( R(setq *error* oerr) 2 f- B0 t0 ~& ~% Z6 L
); end of resetting
" X4 L/ V: F# U2 z. j* h9 N8 ]3 [+ e3 a4 m- R* \
(defun dxf (code ename)
/ M8 y9 N# n: t/ G# \( F) Q(cdr (assoc code (entget ename)))
. `: n$ l! s7 r5 @1 ?); dxf
4 x3 U* _3 ]. ]9 d
) t3 D5 T$ b( `+ Y' j1 |9 a9 g(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
, n9 ?" h4 y: C; utrimcode invent p0 p curvent linent linent2 ent2 p2)
+ ` q; C2 u- ?5 K% ^(setq D (getreal "\nPitch diameter: ")
2 |% M, k9 @9 A4 ^/ p/ k+ sN (getint "\nNumber of teeth: ") 8 L* b. i Z0 B6 n* w' D: o7 V1 u
phi (getreal "\nPressure angle: ") ( m1 F! R, y$ s. R3 T
phi (* (/ phi 180) pi) ; Pressure angle ' `; x! j- c7 ~: Z
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
8 B7 @* Z$ Q" w, s* [RO (/ DO 2.0) ; Outside radius
! s. [ Z/ E7 G) B& IA (/ D N) ; Addendum # T9 ]8 p7 H6 H( K+ W
B (* 1.25 A) ; Dedendum ( ]1 p3 F) j5 e/ M8 i4 x$ `$ h
DR (- D (* B 2.0)) ; Root diameter ; o7 w {* ]: l& {2 L! z
DB (* D (cos phi)) ; Base circle dia.
2 q8 W- _/ C5 B: d) [# ~ rinv-plst (involute DB N phi);involute points # y- R, l; O2 W
trimcode nil 1 F6 {/ K' T; h$ k/ b0 S m; Z
); setq 6 H$ e f1 D3 [
(command "ZOOM" (list 0 (- B)) # B" }, h h+ z
(list RO (/ RO 1.5)) ~; k1 K' [3 S4 V1 B- B8 h. R5 f4 y
); command
+ v4 ~: O3 @+ f( X b(setq invent (draw-inv inv-plst)); Draw involute.
. g! M/ d- u( x7 ~4 \2 a(setq p0 (car inv-plst) ( m5 L5 E) b4 S5 s
trimcode (ext-trim p0 DR D);trim or extend
9 c. \- C8 h! K$ Z); setq ; the involute. 6 \- F. A( k5 X
(if (and trimcode (= trimcode 0))
4 L5 k2 s7 [7 @' y2 C- a) B) H7 Y3 u(progn ; Joins the involute to the extension.
' i0 \+ S/ }- k& K3 Y# u! _7 Y(setq p (list (/ DR 2.0) 0)) 8 `+ L- l8 p" r5 f
(command "PEDIT" p "Y" "J" invent "" "X")
4 c5 ]2 A/ `2 j! q( E(setq curvent (entlast)) * G3 O! i' w% h; \
); progn
# w# c1 S: m7 P(setq curvent (entlast))
1 |6 I g/ c ^# S); if 2 d" c( x8 H8 A4 O, h, ]
(if (null trimcode) (setq curvent invent)) 0 B# r0 V+ q" X# p% o) _
(setq linent (draw-top-line D DB N RO)); top line.
1 h9 K+ w& X' w(command "COPY" linent "" "0,0" "0,0") g$ G8 J l Q' u
(setq linent2 (entlast))
+ z# ? p+ |' B! f3 p: g(setq ent2 (mir-it curvent linent)); mirror curve
0 n5 `3 t) L$ ` t$ n) N9 W(command "PEDIT" curvent "J" linent ent2 "" "X") X: U* s1 }+ Y) o5 p. E
(segment DR N linent2) ; Finish the job!
& u3 O& P4 y' w/ F0 ^) \: K(setq p1 (list (- RO) (- RO))) ' z( y& V/ N% o' X) T. H
(setq p2 (list RO RO))
* g0 d7 H( o8 n% Q% w! q3 f8 U(command "ZOOM" p1 p2)
8 ]; S9 c3 W6 a3 `- n7 q- g1 T9 g! p. N(prompt "\nConverting to POLYLINE, please wait...")
' X, q" ]# R4 {2 X2 k( h(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
) A/ X3 A: d; J, Y! b0 @(prompt "\nAll done!")
! y$ p7 `! Q7 t) g0 L( X* l); spurgear & W3 k3 Z1 I4 b& J- w5 y" l7 q
1 N$ C" I& h1 X& @5 ~
(defun involute (DB N phi / numer denom frac theta2max & w! q& |% e$ l; A
thetamax theta-inc theta plist RB xval yval p) ' u' O) `! O8 ?1 v6 c4 l/ s
(setq invfact 3)
l: X. j5 o8 F4 }9 Q0 }(setq numer (+ N 2.0) 1 W8 {$ |% A+ J z- O2 @' k8 W( l
denom (* N (cos phi)) / e4 G2 Y6 r) p/ X+ K
frac (/ numer denom)
7 I" g( D6 M: Z$ a }" ptheta2max (- (* frac frac) 1)
8 R$ h) S8 w5 m, fthetamax (sqrt theta2max)
2 G5 O/ I" q- l* {& q! _/ u% [theta-inc (/ thetamax (float invfact))
~7 ]2 b+ S( C* L# ]theta 0 5 W6 p! G7 o2 a0 x: I) z+ T
plist nil # y7 h9 U$ w+ w: C! T4 p
RB (/ DB 2.0)
. f6 r; z8 Y e2 h! ^/ Q b5 T. U, p$ F2 C6 {); setq * z8 S4 D! A8 E0 W
(repeat (1+ invfact) ( v7 \# t% j8 J2 u* l( X( f
(setq xval (do-x RB theta)
7 s2 L8 `! x1 M/ ^% Iyval (do-y RB theta) ! R9 r! y% @) G
p (list xval yval)
2 K" U% t! K9 Lplist (append plist (list p)) 3 }! d+ n4 ~9 v3 M5 r: h/ b7 {# Z
); setq ; p q) f- o" ^& {, z5 C2 O9 d
(setq theta (+ theta theta-inc))
, Z6 D0 D: X. y- h' q6 K- ~); repeat
, f/ U1 u% z4 s, n! Lplist 0 X$ B: G& L' v0 R8 ?* G( }
); involute
% d/ {% _2 j# @$ t& I
& v% s2 c t8 ^ | ~) V(defun do-x (RB theta) ) D; F9 e3 L3 y3 Y
(* RB (+ (cos theta) (* theta (sin theta)))) 7 [3 p6 ]( x: V% E. F1 r8 N
); do-x
1 J% H% s3 `5 W' c# h0 Q
7 i* B( m% S& ^5 k0 P( F- E(defun do-y (RB theta) 7 p/ X* j6 ?% e1 z$ G$ k' D
(* RB (- (sin theta) (* theta (cos theta))))
; C; I' K- K7 [. \' o); do-y
7 ^4 F4 x/ {) Y# l" L7 H+ w, p& R/ @( N; x
(defun draw-inv (inv-plst / dirpt plist p) 3 e* J8 ~5 Q- e! X* A
(command "PLINE" (nth 0 inv-plst))
: p: e; Q6 w7 e z(setq dirpt (polar (nth 0 inv-plst) 0 1))
) t' S+ O% r! N1 n% Z(command "A" "D" dirpt)
' c+ K. Z/ r- ^' P(setq plist (cdr inv-plst)) # A& H! U7 l+ l6 r
(foreach p plist (command p)) 1 q: l" A5 T- A
(command "")
' D. @# H4 K% ~! {(entlast) " p8 ?6 J' d9 b7 k! n
); draw-inv
6 b/ v, L8 c+ X& _3 c* n* }& d+ P5 S' \0 L: n' [
(defun ext-trim (p0 DR D / trimcode dist endr) / c- {5 E. {# x8 f) y, t) I
(if (> (car p0) (/ DR 2.0)) ; Extends the involute 7 e7 {9 @ T& p& {* q- Z# E
(progn
m) X: v# S. m! t6 B(command "LINE" (list (/ DR 2.0) 0) p0 "")
# Y$ M9 L9 b, v1 H; S" \. B& s(setq trimcode 0) 6 l' z7 M8 P+ H" U& E
); progn & y! S& y, e; A' k+ }
); if
7 h4 n! Z X+ q9 @) r* b(if (< (car p0) (/ DR 2.0)) ; Trims the involute
7 n: Y% W# o4 W(progn
, E" c8 U. M9 o' Y7 e6 y s1 ` A(command "CIRCLE" "0,0" "D" DR); Root circle
: y7 a& M% k1 ]+ i(setq dist (- (/ D 2.0) (car p0))) 5 {9 p/ @0 [! F5 i
(command "ZOOM" p0 % \6 G! D' f# O2 J K# V2 e
(polar p0 0.6 dist))
3 U7 U( S4 Q9 A; }(setq endr (entlast)) 9 k6 b/ |8 n ]
(command "TRIM" endr "" p0 "") " M! [' O2 j8 U, E7 _( P x2 y: y
(command "ZOOM" "P") + R9 a/ {$ F* o# u' y
(entdel endr)
3 ?. V* R" s( q(setq trimcode 1) - r0 v7 }2 p3 x5 n% p1 h$ X
); progn 9 X! |' h* X* W1 ]; T
); if
9 ~/ Q& L& D5 z: T0 \$ itrimcode
. {# ?5 ]9 A6 a1 j- U7 _); ext-trim
1 O: d- A- V( I% I7 J) B Y- Q. g5 C7 g
(defun draw-top-line (D DB N RO / theta-p xp yp alpha
( n; A7 V# l& q5 c) `# ^. \4 f6 Kbeta tang angend inv-endpt lend) & u2 `. i' v) t
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) 6 T& H+ Z6 O; h$ |# v4 t
xp (do-x (/ DB 2.0) theta-p); This section 7 |3 ^" |, h4 W" K; X8 m3 _
yp (do-y (/ DB 2.0) theta-p); sets up angles
! J4 E! w3 i. f& @1 v4 ], ]alpha (atan yp xp) ; for drawing a
! M$ @/ L, v( q0 G6 f& { }abeta (angle (list 0 0) (last inv-plst))
8 s# ^8 |) i5 \beta (- abeta alpha) ; line across the / l' L ~/ ~* k, `1 H* p% G
tang (/ pi N) ; top of a tooth
' e5 D( t9 Y7 h& ]5 Cangend (- (+ alpha tang) beta)
- i* l1 B4 l5 l4 K# v2 A; K2 ]inv-endpt (last inv-plst); This also creates
{) O$ |- P& f8 `( |lend (polar (list 0 0) angend RO); the tooth
2 j3 e6 _; G* t5 U); setq ; thickness.
/ Z g+ _3 l% g1 U; A7 ^5 N(command "LINE" inv-endpt lend ""); Draws the line - C& J+ V" ?* G7 n" k: p1 [
(redraw)
, O! b Z1 c( h# U8 _(entlast)
. j% i# K- s/ W% P6 r* {& J); draw-top-line ; b. u2 O8 o3 \% H, G+ M# N. }
! I& j0 O. r0 r( `6 E/ w1 t* c(defun mir-it (cvent linent / pt) - l9 U2 `1 {6 C
(setq pt (dxf 11 linent)) 6 R [( v) p& A/ L$ b! W
(command "MIRROR" cvent "" "MID" pt "0,0" "") 5 P0 _ w" D4 G( _8 F6 p
(entlast) / ]0 e; `$ R3 m+ M. n
); mir-it & h( o8 t1 ]1 O8 x* s* Z# Z
. x+ Z+ y; N4 h; t+ S0 B" C(defun segment (DR N en / p1 p2 ang dist midp p0 pang
+ H5 x( k' o D' f6 Q, G, hpang2 p p3 ent3 entl1 entl2 en1 en2)
d- f2 e, {' z' B) t(setq p1 (dxf 10 en)
& T$ O: A: a2 d2 t% c: Sp2 (dxf 11 en)
0 q; L/ z- m- _0 H$ wang (angle p1 p2)
: J% c# J, Y" E- F, k$ R. d" G* ldist (/ (distance p1 p2) 2.0)
5 R, u/ a1 ^' F# ymidp (polar p1 ang dist) ' n2 ^; o- W; S& V! F5 I/ I
p0 (list 0 0)
, \0 j9 S% t. z a6 B9 Gpang (angle p0 midp) $ w2 |. w" Z0 ] t3 C% [- @9 D% {
pang2 (/ pi N) ' x; M8 F9 _( c
p (polar p0 pang (/ DR 2.0))
5 [" m+ _9 T/ L/ p' _- i6 w; A* Rp1 (polar p0 (- pang pang2) (/ DR 2.0)) ' c3 u% I2 j T: I9 d2 Y
p2 (polar p0 (+ pang pang2) (/ DR 2.0)) l8 F$ k9 W) j$ W' E2 |, h
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) ; S# P- a6 Z0 j! Y7 E) }
ent3 (entlast); This is the tooth p-line
: \" [% O' B. E1 S- C0 M); setq
" ~4 V9 u1 N6 F+ ^% T3 u% S9 g(command "ZOOM" "W" p3 p1) 1 m* X8 {/ Y& K0 |: ^
(command "CIRCLE" "0,0" "D" DR) ;Root circle
0 I; j( O2 M8 n7 _; ^(command "TRIM" ent3 "" p ""); Trim the root circle ; M+ F' L' \6 _' [
(command "ZOOM" "P") . C+ X& }% o) Q+ u$ ^4 @
(command "LINE" p0 p1 "")
6 }- U! _2 c5 j+ G$ S2 J7 q(setq entl1 (entlast)) ) h* V( p8 R6 M
(command "LINE" p0 p2 "") : w! }" N' v* C& C: T
(setq entl2 (entlast)) 0 [* Q6 h! L8 S& p2 a
(command "TRIM" entl1 entl2 "" p3 "") / R: x; w" W9 ~9 @
(entdel entl1) ( x! N+ |# B# D+ |1 p- E0 v
(entdel entl2)
# ?1 m4 G; Y* V; ~/ _. e$ Z+ G(entdel en)
+ ?! K. n3 Q+ Y+ r) S(command "ZOOM" "W" p3 p1) $ M& ]+ Q [$ m3 v/ J5 f. U
(command "PEDIT" p1 "Y" "X") : t, x+ w+ `/ b: |3 P) p
(setq en1 (entlast))
. A- y- U" x$ A7 J2 e(command "PEDIT" p2 "Y" "X") - ]* o3 `4 S' p
(setq en2 (entlast))
- _7 G) @6 I/ W# m+ ^+ D$ ^(command "PEDIT" en1 "J" midp en2 "" "X") ' c/ e, e6 Y. Q) I0 e" _& o$ l
(command "ZOOM" "P") 1 r8 k7 Y' X# G% i
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
. E: Z" e. u/ P; i( X' x); segment
}+ c5 i, m9 t- C( f( Q% T* `1 \% D( Y* k- B( m
(defun c:sg ()
5 D1 h d! n+ ]& N(setting) 6 J/ ~4 [! p; @. _ G! i
(spurgear)
. z5 L4 {6 m2 C; P& G" U' g(resetting) % r8 f, u, `' y
(princ)
8 U% y6 s- D: @6 l! }8 Z); c:sg
2 g6 B4 O6 F8 n$ c% ]( h8 ^+ n" }/ j- v+ H% c. S j
(prompt "\n**SPURGEAR.LSP Loaded!")
, u( L* [0 b7 J* N' p6 Y(prompt "\n Enter 'SG' to start") - |; b2 ~- V, a- k* V; N) `& \
;;;end suprgear.lsp |
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发表于 2008-8-25 14:22