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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。
# H+ I& [( O3 C+ }0 D0 r;;;begain suprgear.lsp / S& m) w+ ~ C# |1 _' I& u, q
;*************************************************
6 C& {+ ]% H! U4 T- w$ };SPURGEAR.LSP - a lisp program by Tony Hotchkiss
/ a4 b9 U# X# H7 P4 J;------------------------------------------------- 1 q7 V! k5 Y: \
; This routine draws a spur gear using joined ; o% [/ |# O5 y5 _& o1 A- s
; polylines. It lets you use any pressure angle ! o# O q, @. k" z# |& K! L
; to design the gear teeth.
0 @2 q; G6 E" a;************************************************* 8 S) \$ j5 c, E0 I H
(defun err (s)
$ P/ `( _8 F' y# a(if (= s "Function cancelled")
$ n) q8 F% ] W" j( ]) \(princ "\nSPURGEAR - cancelled: ")
, c t& ^+ S$ x7 _/ I(progn (princ "\nSPURGEAR - Error: ") (princ s) ( \2 d$ ?, R; u
(terpri))
/ d" y! q% S9 X5 \( B& q" N0 N8 p. ~); if
; P0 A( i% P9 H(resetting)
6 W! Z% ]1 ^4 g6 {: L8 H: c/ z(princ "SYSTEM VARIABLES have been reset\n") 2 D4 h1 B! r6 f# P e
(princ) 6 Q v7 I @5 {) I# [2 u' j
); err + ]9 g2 n! { u% _
- A8 M$ {+ _( E0 [
(defun setv (systvar newval) 5 D5 s# y- Q2 ^) M9 E. t# U) C- ?* ^
(setq x (read (strcat systvar "1")))
5 l9 D8 `0 O8 U1 \ S(set x (getvar systvar))
6 z1 h7 ?" m3 T% t" c(setvar systvar newval)
Z( x3 }" x5 n+ ]); setv 2 x% Y5 D3 P! J6 r+ s, g/ s+ I
" |7 q7 v+ f- a- g" Y- Z% A(defun setting () ) b0 l: T! ~, E' f
(setq oerr *error*)
# `2 ~1 x% s4 y1 Y(setq *error* err) 3 r! H7 X, H& X/ n* v4 R! _
(setv "CMDECHO" 0) 4 r( ]4 B/ u. M0 O: t9 b; D
(setv "BLIPMODE" 0)
! o6 V; B7 V8 e1 s: U4 h); end of setting ) p5 v2 z) L) D
(defun rsetv (systvar)
6 _+ o# ~& l7 l z; A t3 S' s! H(setq x (read (strcat systvar "1"))) 1 q9 x5 c# Z; R/ K6 w( J0 l5 ?$ ~
(setvar systvar (eval x))
# s1 F$ |( Y5 I) c' x& h+ K$ Z1 q+ g); restv 9 O" T t: Z! I# h: S1 X/ _# b
(defun resetting () " d/ d/ Y. q8 \
(rsetv "CMDECHO") ! k3 `, R3 h% k# a
(rsetv "BLIPMODE")
( X/ m3 F* t; Q, c. Z. |5 Z(setq *error* oerr) " |) S6 A# z; @
); end of resetting
6 A! I8 `: g" Y: I
M2 o& I1 E: \& ]$ V3 B% B(defun dxf (code ename)
, y; `8 H: B g2 U(cdr (assoc code (entget ename)))
0 N; ]0 g* j$ H2 j9 x3 J' Q); dxf
9 W, g7 q* I+ ^
% W2 _7 @2 g$ E! m( M/ _3 j" A(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 5 ?7 O7 `9 E4 p2 V
trimcode invent p0 p curvent linent linent2 ent2 p2)
! _7 g7 b6 l# B G) n0 g, |, D" n6 g(setq D (getreal "\nPitch diameter: ")
) x+ l" E7 x6 I W/ k# @$ Z( j0 ]N (getint "\nNumber of teeth: ") % h) D; p T% I9 \6 @
phi (getreal "\nPressure angle: ")
9 {( J5 F7 U$ y( Wphi (* (/ phi 180) pi) ; Pressure angle
1 b6 v& B t/ g7 n6 z( l- g) Y$ tDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter " ]! b- R" [$ s, Y
RO (/ DO 2.0) ; Outside radius 9 ~8 f) u, ]& z( y- m
A (/ D N) ; Addendum 9 y0 i' I* D' ^* z2 F, ~* B5 X
B (* 1.25 A) ; Dedendum " Y% m4 M6 J1 V; E& A
DR (- D (* B 2.0)) ; Root diameter 7 Q* A; [1 Q/ v4 d* q8 Y6 [) B$ j- _
DB (* D (cos phi)) ; Base circle dia.
( V2 Z0 z3 q; l: k- M( ]0 g: Yinv-plst (involute DB N phi);involute points
& L: }8 x9 M: ]! R* Jtrimcode nil
8 _& s4 a* n' f" l); setq - P2 W' t& F0 B
(command "ZOOM" (list 0 (- B))
8 g: w; L( f5 c3 {0 H0 n(list RO (/ RO 1.5)) ) a& S4 j* Y9 t4 j; ?6 ~# b
); command
. l5 f* F! o6 S" m* y+ y: s+ _! T(setq invent (draw-inv inv-plst)); Draw involute. 5 i, a8 x. Q- |# H: {" e z6 g
(setq p0 (car inv-plst) / {6 K8 w0 ~% }# f7 S f9 @0 ]% E
trimcode (ext-trim p0 DR D);trim or extend $ ~9 K# X/ g, U) ~1 H l
); setq ; the involute.
, n5 P0 F$ @; i& H6 C(if (and trimcode (= trimcode 0)) " H3 E7 h C0 E. K
(progn ; Joins the involute to the extension. 0 [" F# n2 q' }
(setq p (list (/ DR 2.0) 0)) ; x" W3 C3 ?6 C# e% r* C$ ~
(command "PEDIT" p "Y" "J" invent "" "X")
# ~. o: o% `- B- ~) O(setq curvent (entlast)) , S( a: r4 H1 v0 j2 _( z. M: f
); progn
! n1 E7 f0 d( `. {5 L/ u(setq curvent (entlast))
/ v" S! t/ _3 p# Q; o) H5 x W' [, r); if
$ f5 B! ^1 J2 c& ?(if (null trimcode) (setq curvent invent))
4 X+ A" ~2 L5 R4 N% y' Q; T" \+ F1 U: G(setq linent (draw-top-line D DB N RO)); top line.
3 \. ?9 }1 y. j7 H8 z& I5 M( y2 P(command "COPY" linent "" "0,0" "0,0")
3 t! R9 l( i' |0 }. a9 A- V& g(setq linent2 (entlast)) . o2 X! y% u! A! h5 n( R6 u0 J+ _; ^
(setq ent2 (mir-it curvent linent)); mirror curve
, L) E8 n. |3 @(command "PEDIT" curvent "J" linent ent2 "" "X")
& A1 j( J3 C, `; Y, G" G9 _, F$ C(segment DR N linent2) ; Finish the job! : w' n( P, H. U! a# R2 ^; z
(setq p1 (list (- RO) (- RO)))
0 _0 o+ Y0 n( p(setq p2 (list RO RO))
( T* ], c, B' `9 W: Z4 J(command "ZOOM" p1 p2)
8 ?+ a4 ?3 l8 V: t4 g" l) X(prompt "\nConverting to POLYLINE, please wait...") % {8 \6 |% C5 s: ` X. Q
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
) N9 U( d+ X$ W(prompt "\nAll done!") 3 C" H) N8 u2 y$ G# h/ q4 t
); spurgear
% N" Z" W- C$ g( `( T1 c: r: Z' O0 C" S3 s8 _
(defun involute (DB N phi / numer denom frac theta2max " `, F; @/ a4 @" l J) b5 D
thetamax theta-inc theta plist RB xval yval p)
$ Q, X) ]6 J- I% X# g" \(setq invfact 3) ( i" ?2 }3 j* D1 d, v% G2 w5 d
(setq numer (+ N 2.0) 7 n# ]0 m+ j' j+ S# m/ k: g! C6 P
denom (* N (cos phi)) ( F5 Z, a1 @, p$ u9 {6 @( t0 V
frac (/ numer denom)
' m( g% R. I" F1 _3 i: o' ctheta2max (- (* frac frac) 1)
0 {, J* ~' }: x% ?8 Sthetamax (sqrt theta2max) / C# q; b& @7 v3 V
theta-inc (/ thetamax (float invfact)) , l6 a" F0 B: p6 s% ^* b$ m
theta 0
. x2 S; @4 M& D6 lplist nil 8 P, x3 P1 j7 A; j- W
RB (/ DB 2.0)
! K7 N1 f5 C# N+ H$ n); setq * J, m" a: P8 ^9 z# b( W0 T$ F
(repeat (1+ invfact) 0 H1 G& I) j. @4 }9 l5 ]% t; ?
(setq xval (do-x RB theta)
1 P) q. K" c' vyval (do-y RB theta) 4 z$ r; C9 o- g7 d8 G
p (list xval yval)
/ p% ]$ N O3 O: X& nplist (append plist (list p))
. Y) u: \. c0 }, O- d/ Q2 P' r); setq b# Q: L( w8 |4 }: C+ t
(setq theta (+ theta theta-inc))
P) K* b! H* v5 w2 x); repeat
7 D P1 ?; b7 `/ s! U$ _7 d# oplist 0 u, D) q7 s+ }# F" v- W8 I$ |
); involute
* r7 T( R) i+ V5 H
3 h) y O' b0 a F(defun do-x (RB theta) . r8 f, J0 i% L {* l
(* RB (+ (cos theta) (* theta (sin theta))))
& ?* A, M, [+ p! ]: e5 t' y); do-x
# E1 r+ u- \" |9 m. n# ?, \) v: p' o7 Z3 L- }
(defun do-y (RB theta) " H: x) `3 u: L5 a4 p
(* RB (- (sin theta) (* theta (cos theta))))
. f2 W! I" R2 h2 t) l% z1 w); do-y # d, I) D8 Y( N3 z; \
6 x7 {3 V) s$ S) b2 j! _(defun draw-inv (inv-plst / dirpt plist p)
6 C$ G# P3 ^& `9 T(command "PLINE" (nth 0 inv-plst))
* Y1 F% V( v2 S1 Q+ f(setq dirpt (polar (nth 0 inv-plst) 0 1)) : m4 T# p- \, T9 C) C7 _
(command "A" "D" dirpt) ; T+ ]4 a2 v4 X' c9 }; U' I1 M
(setq plist (cdr inv-plst)) 3 e6 N4 s' [3 L1 w. U
(foreach p plist (command p))
& _% J1 W( y- [! f) c8 B( o(command "") ' A4 `# E' B( D
(entlast) * j, P- W& _# x) t) U. C
); draw-inv / f+ j& g) {' n0 R0 Z: O# u
% v2 { p% j5 k2 c(defun ext-trim (p0 DR D / trimcode dist endr) 0 j& }: v1 `& K! s& P9 V
(if (> (car p0) (/ DR 2.0)) ; Extends the involute ; V# a$ X0 R4 w9 o
(progn
+ l& E# U# O8 _7 t7 R* A( ?: |(command "LINE" (list (/ DR 2.0) 0) p0 "")
+ ]2 t2 K3 W q& b; C! f! a(setq trimcode 0)
8 r# _( [% n. y- I- w: Z8 P m); progn " t+ F) ]3 t- q$ b* m. I
); if ' Z' X$ b& p3 D+ I
(if (< (car p0) (/ DR 2.0)) ; Trims the involute " @* n- {8 N( K; Y. g3 Q2 @
(progn # n2 ?3 p8 X6 P
(command "CIRCLE" "0,0" "D" DR); Root circle
, {6 y k+ u+ _' a2 V ]3 A0 l(setq dist (- (/ D 2.0) (car p0))) - w2 ?) |0 x# u0 Y3 `+ k# r. t7 v
(command "ZOOM" p0 + g' `2 N0 n+ F. }* T) d0 `
(polar p0 0.6 dist)) ; V- o( i6 m" I/ l) D
(setq endr (entlast)) , _) S7 I1 s5 Z
(command "TRIM" endr "" p0 "")
6 A( z6 B* c' ~2 f: C(command "ZOOM" "P") 9 Z* c5 `) J% e$ T% G1 v% h: U
(entdel endr)
% B: P/ R X* h i+ h(setq trimcode 1) $ o0 |' o/ i2 D8 E& m8 U3 \
); progn
/ Y: b& @* L& a. o9 M); if 6 B. x2 j7 O7 j- ]
trimcode
1 H/ e! H2 R0 y) a3 Q" V); ext-trim
- A; |$ ?8 O- X/ k, f+ X. R6 d+ y5 H# P* i* k. O% r; e3 f
(defun draw-top-line (D DB N RO / theta-p xp yp alpha - i# u; a5 w' g& O
beta tang angend inv-endpt lend) 2 |1 a& U7 z. v6 T& H+ b2 i
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) 3 u* ~! h. _( N+ G
xp (do-x (/ DB 2.0) theta-p); This section
0 N5 {5 Y; f. I- o; y1 iyp (do-y (/ DB 2.0) theta-p); sets up angles H, C2 L9 t! Y' @1 v
alpha (atan yp xp) ; for drawing a
+ e' v' B1 G! g# [ |+ @/ jabeta (angle (list 0 0) (last inv-plst))
$ i( `6 a; j! |& c" I, @+ a' o" m* _beta (- abeta alpha) ; line across the
) Y J( Z7 b, j6 y+ ~; C2 Ctang (/ pi N) ; top of a tooth
9 j1 m D. ], f) [0 Y& ?# N7 ]angend (- (+ alpha tang) beta) 1 B% Y5 {) l2 U: S2 M. B. H8 i
inv-endpt (last inv-plst); This also creates
' X; T S: h) i# \, m( d5 b# |lend (polar (list 0 0) angend RO); the tooth 3 ~$ s# \0 i7 _ s/ W
); setq ; thickness. 1 X% B* d: w( N- D. N
(command "LINE" inv-endpt lend ""); Draws the line
. T0 g" t- h8 K4 ]2 Y) A0 T(redraw) 6 x' @+ l0 g% `* E
(entlast)
i. R' Y7 _; K$ M); draw-top-line
- G4 ^+ R! V4 R @% T% J% r" N4 p. M( L* x! _" P
(defun mir-it (cvent linent / pt)
) w2 p6 @ {7 J' m(setq pt (dxf 11 linent))
6 R: N; K, A1 D# R; u(command "MIRROR" cvent "" "MID" pt "0,0" "") 2 @0 a( n" _3 Y- D9 x
(entlast) ' h) k0 g2 g! E7 X
); mir-it 7 {" m. O3 ?1 x5 [) H. R3 v
- e" X' [% E; t) w0 @1 m(defun segment (DR N en / p1 p2 ang dist midp p0 pang ( V0 m8 b& \6 f% ^6 t
pang2 p p3 ent3 entl1 entl2 en1 en2)
( G9 u) w* k2 F7 N- _(setq p1 (dxf 10 en)
, |9 I% z2 w4 w: u8 o0 L3 q! Ip2 (dxf 11 en)
' p( K1 P) [* k5 P; Sang (angle p1 p2)
& ?: k3 N1 H2 m% |dist (/ (distance p1 p2) 2.0)
! B/ Q2 ~2 j# d2 imidp (polar p1 ang dist)
! o: @. P3 Y$ r' t0 G/ s' ~p0 (list 0 0) ' k: q! Y+ L6 _% u" G% B! g( j
pang (angle p0 midp)
6 D# {" }- B; ^' o, `# ?( p7 o; Wpang2 (/ pi N)
! A. j' u# e( y. |; [, ~8 {p (polar p0 pang (/ DR 2.0))
7 p# k# E; |. e& I7 q% m+ W; d1 \p1 (polar p0 (- pang pang2) (/ DR 2.0))
5 R. g7 x, o& d; {9 \: o/ e+ ?: Gp2 (polar p0 (+ pang pang2) (/ DR 2.0)) ) d" R t3 t- y( m2 I8 O
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) 9 h- g; X) k8 {8 d& o
ent3 (entlast); This is the tooth p-line $ G ]5 n2 x& e
); setq
k' q5 g/ m! C* m) k1 `(command "ZOOM" "W" p3 p1) % ^ D' [/ L" x' a( s
(command "CIRCLE" "0,0" "D" DR) ;Root circle $ c7 P. ^$ {% ?1 P! k! w
(command "TRIM" ent3 "" p ""); Trim the root circle # L, t: q# |% c% `/ ^
(command "ZOOM" "P") & ] C8 e7 G: g; K
(command "LINE" p0 p1 "")
+ x9 ^0 t; R- m(setq entl1 (entlast))
* @9 e' j6 W: @: a(command "LINE" p0 p2 "")
( u4 m T( N% C! D3 w" K: E(setq entl2 (entlast)) 9 H" u: O3 t% _6 d* s t
(command "TRIM" entl1 entl2 "" p3 "")
; r7 U6 \5 ?& b3 Q(entdel entl1) ) g( r* t: C9 Q
(entdel entl2)
! F& j1 F4 f1 ]# N(entdel en)
5 v: W% A7 G( b(command "ZOOM" "W" p3 p1)
1 `$ {+ z& ^( w" S$ z# x(command "PEDIT" p1 "Y" "X")
- i Q) q s, \: U+ T8 o! f; M. {(setq en1 (entlast))
+ `& k. [8 W6 l(command "PEDIT" p2 "Y" "X") , |1 L, Z+ }# d) q o
(setq en2 (entlast))
: L: [7 R- ?' s! b( V5 H9 T) f" ^(command "PEDIT" en1 "J" midp en2 "" "X")
! A! V* q' n' L(command "ZOOM" "P")
|( E, z' V3 `& Z/ V(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
' P2 N7 @# C9 I); segment j% l3 O! T3 L9 R
7 W" A2 }( n/ A/ u l/ k0 ?(defun c:sg () ! x. A8 B1 k0 \/ R( O
(setting)
- i- |* ~4 p' Q8 B6 _(spurgear) ( J* `8 q! {+ F* f. T0 ]; z
(resetting)
- o: J7 n& t% p* L(princ)
- F n4 L, f8 H, g5 O); c:sg
1 c' h; M5 x* a W. P- h9 t! X' ]7 M3 ]" z6 e
(prompt "\n**SPURGEAR.LSP Loaded!") p! r8 b7 l9 v p7 H V" K
(prompt "\n Enter 'SG' to start") ) o4 B1 m. c+ i7 W; j
;;;end suprgear.lsp |
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发表于 2008-8-25 14:22