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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。
{- d2 f+ O7 R9 ^* A: U0 p! V;;;begain suprgear.lsp $ T+ u* }; [5 }& a& T! p' r, j/ J3 n
;************************************************* & i2 v; [0 _# f7 b0 E" L
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss " ?. A+ P. [7 L0 { C
;-------------------------------------------------
" ^, @: s/ v1 ?- b S0 T5 @& g; This routine draws a spur gear using joined
) p3 `! i" r+ d: E% e; polylines. It lets you use any pressure angle % q3 L% d( }% I$ l0 K
; to design the gear teeth. 0 r8 w5 m: t A9 n0 T! X
;************************************************* 8 p, q; j$ B: l6 B9 m: z# f
(defun err (s)
- ^9 a# {8 v$ j3 g3 H4 r. G, G- E(if (= s "Function cancelled") + I$ m) Q$ U* V" ]
(princ "\nSPURGEAR - cancelled: ") 4 \3 g8 u/ x: O" q1 T5 X" z
(progn (princ "\nSPURGEAR - Error: ") (princ s) ( x% z: {4 x& T. E+ n0 R# u9 v
(terpri)) 4 v! v; Z2 j* v; p9 l" f
); if . O4 ?; i( f$ }, h' j6 u
(resetting)
6 S" j, K( a/ ~4 ~% a Y(princ "SYSTEM VARIABLES have been reset\n")
2 Z' k4 C7 h/ x(princ)
' K5 l& G' b S- R); err
& D. K1 y1 M) W- z9 n+ f" W' p
(defun setv (systvar newval) 7 z+ _+ H0 C8 `. v
(setq x (read (strcat systvar "1"))) 0 a5 P% V, F; `1 N' L
(set x (getvar systvar))
0 U3 Q- h/ J6 s+ w& a(setvar systvar newval) l% M2 g: P1 ^4 F1 M% p' b, Q
); setv
* O1 L1 F6 B& d* w) t' J* T* K) y
(defun setting () & i9 E4 h0 H" I
(setq oerr *error*)
3 F9 h) w: v2 R' d; O2 n(setq *error* err)
7 c# r5 }+ h7 t$ K4 s, r(setv "CMDECHO" 0) 9 ^( i( B2 Q% ]& V9 A+ v1 \
(setv "BLIPMODE" 0) ; R5 g, Y+ ^7 |. q
); end of setting
/ X! j% B' N% x4 d f9 g(defun rsetv (systvar) 8 O; c' {; A2 H+ e- t% L5 _* Y3 u7 @: t
(setq x (read (strcat systvar "1"))) ! S5 O& T u4 @+ ^. F$ c P3 P& Z
(setvar systvar (eval x))
% }4 G$ e) ], a# D0 p% ?( l2 h( x4 {9 x); restv
' X* J9 a/ n }% O(defun resetting ()
! v. X) a* Z3 G* Y+ `* x(rsetv "CMDECHO") # W8 ^4 Y' K0 [2 M: U0 x1 B
(rsetv "BLIPMODE")
6 A! ~' W; g, ~, t(setq *error* oerr) % ~( S" ?7 i6 h* B% ~$ c& Z& b
); end of resetting 0 h, H4 _7 T& i- j) C4 U
; `# }; v7 x) t) F(defun dxf (code ename) 8 Z! n2 o, h4 f1 }- A% p. K0 I5 ^
(cdr (assoc code (entget ename))) 9 @; b0 Y+ z6 N, D e7 f7 }/ a$ O" G* X
); dxf
1 B( F2 K5 c: p* Q- J/ r$ o& {2 F2 ]! E0 z3 F+ H
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 ! V5 O9 Q- Q# v6 H) D
trimcode invent p0 p curvent linent linent2 ent2 p2) 1 U3 e0 i: O& z' W+ e
(setq D (getreal "\nPitch diameter: ") $ E# W$ W2 I8 F7 x- K$ }3 Y3 i( n
N (getint "\nNumber of teeth: ")
' B" W" w6 E$ t8 d0 z- ophi (getreal "\nPressure angle: ")
- A$ W5 Y; G4 aphi (* (/ phi 180) pi) ; Pressure angle
; M; F J. d% {- f/ N$ }* |3 EDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter 0 q% V1 D: k- X# A( ]
RO (/ DO 2.0) ; Outside radius 4 ?: Q3 C: Y$ z4 ~+ W, x+ G! W c
A (/ D N) ; Addendum , a+ t! W- F- [# b4 h
B (* 1.25 A) ; Dedendum
! y+ I8 n# G& O8 M$ p4 J2 dDR (- D (* B 2.0)) ; Root diameter
& E" p p- Z2 W7 DDB (* D (cos phi)) ; Base circle dia. / H( C) c& D- p o( G, V/ P
inv-plst (involute DB N phi);involute points
' _6 H3 n; D- u6 ?2 ?1 d) H: Htrimcode nil
7 `$ B3 ~2 y* N2 Z* k5 [* L4 ]1 s); setq
# {+ }+ Z$ t; x* t/ t m4 @+ a(command "ZOOM" (list 0 (- B))
. x* M2 X! Y) U1 ^* v/ \1 ]2 ], }2 Y, I# O(list RO (/ RO 1.5))
+ O6 ~, n& I0 M: b3 a6 p }! y); command
! \* s8 a$ Q! q% b/ q7 ~- p(setq invent (draw-inv inv-plst)); Draw involute.
% @' O4 \# T, [(setq p0 (car inv-plst)
' T! P9 m# p7 \: A) _trimcode (ext-trim p0 DR D);trim or extend v! ]" |/ Q! |# _. A
); setq ; the involute. ! L" V1 d1 f, M9 x) n" A( Y3 g
(if (and trimcode (= trimcode 0)) " Z/ ^ u- w) ?+ t/ J3 ]) b m* H: G
(progn ; Joins the involute to the extension. 3 `+ l3 Y$ A! {8 i; ]( w" o& n
(setq p (list (/ DR 2.0) 0)) / @) n$ j n$ H. X5 h, B
(command "PEDIT" p "Y" "J" invent "" "X") ' z- |0 V5 Y6 m2 g p2 v
(setq curvent (entlast))
$ c) _' F$ q6 R- K! O( K/ s" m. i); progn + p" n* ?* ~. q5 f9 q, U
(setq curvent (entlast)) " M8 r8 B) H- h/ D, `# d! o ?
); if " X! G0 r$ v. ~# }& ^( G
(if (null trimcode) (setq curvent invent)) - U) f5 M7 p% P# L) B0 k
(setq linent (draw-top-line D DB N RO)); top line. , `6 @# p$ b9 l" v, z% d$ J( [
(command "COPY" linent "" "0,0" "0,0")
& ~: c7 E1 D/ N( a7 q Z* J# ~(setq linent2 (entlast)) - J! R% q2 b% T: g; Q
(setq ent2 (mir-it curvent linent)); mirror curve
6 T5 @* F* ^$ S1 S4 q+ D# s. _(command "PEDIT" curvent "J" linent ent2 "" "X")
% ` {; w/ z& H& H5 G(segment DR N linent2) ; Finish the job!
( b& v" ^' l8 ^. W$ R! T(setq p1 (list (- RO) (- RO)))
i- h, ~; X% v( `, c(setq p2 (list RO RO)) % ^0 ]' G5 Z# S6 E4 Q6 d( r
(command "ZOOM" p1 p2) 2 s/ K) N& N: h% u: E, o
(prompt "\nConverting to POLYLINE, please wait...") 2 c2 N) n+ D/ x) ?& H/ K
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") 6 n3 r( n# h) d- N6 i
(prompt "\nAll done!") 4 s$ l( u m5 J; k, h- R: ?% O1 I3 z* F
); spurgear 1 M, e9 U2 I; z0 m/ N
( S. U2 v6 ^9 p$ B6 g
(defun involute (DB N phi / numer denom frac theta2max 0 F3 H, v: ]4 b4 Q8 y/ J7 J" j
thetamax theta-inc theta plist RB xval yval p)
7 l% C* I, g7 I& W, K" a(setq invfact 3)
4 |; t; w2 _! b! R; @2 y# s0 d(setq numer (+ N 2.0)
' u8 T; j" F; F3 H! Q" wdenom (* N (cos phi))
; P/ ?( i5 i/ b; qfrac (/ numer denom)
& H# k/ R0 { P8 p) E' h2 |+ ctheta2max (- (* frac frac) 1)
- D1 V% {' X& v8 n! J( y0 tthetamax (sqrt theta2max) " ]/ I | }! g% Z+ o# r
theta-inc (/ thetamax (float invfact)) 8 {% G# F( a' [9 s& c5 P
theta 0 ; I" i) x, S t. n" n, b$ h+ g1 c
plist nil ) J& ?2 F, R9 \- N
RB (/ DB 2.0) ' V; W l- F) n0 l1 Z- l
); setq ( }; G) e% Y) E8 v: Y6 _
(repeat (1+ invfact)
, R2 C/ n R* X6 s' h3 A(setq xval (do-x RB theta)
$ z/ R0 Q9 a' |) g( q6 p4 eyval (do-y RB theta) N+ u) z$ {0 j" w! v& i1 ?% t( K
p (list xval yval) ) g- Y m6 Q: ~4 I% r: @
plist (append plist (list p))
; {$ c0 S) R- P); setq
0 x- g; J5 r. b+ A. E E(setq theta (+ theta theta-inc))
8 Z5 b3 |) s) w0 y* t Q); repeat ' F# T$ R! E7 v/ x
plist
3 H0 F; ~1 L+ V; T# x9 G5 X6 c* X); involute / V) n" @& {9 e( d, w8 S
3 T% F* I2 d3 A8 m(defun do-x (RB theta)
. {2 }; h0 [6 K* F& S(* RB (+ (cos theta) (* theta (sin theta))))
9 y9 y' ^( w- D, m, r5 f); do-x
1 |6 Z% a7 C+ c. }6 m" v" Y+ Q& B9 @7 A7 T) n+ [
(defun do-y (RB theta)
- V# g) A* R% y(* RB (- (sin theta) (* theta (cos theta))))
4 |# |" N* o6 A4 W2 o% U6 e); do-y ; y3 x. t* `- }6 X7 K0 o4 O
2 k2 ~# v m; Y0 Y( W
(defun draw-inv (inv-plst / dirpt plist p)
; b; p( b( h- k( i+ ~. r2 d6 t- u6 b s(command "PLINE" (nth 0 inv-plst)) / T3 j9 T! F& k; T( v3 e7 Y
(setq dirpt (polar (nth 0 inv-plst) 0 1))
/ y& o% L$ [ {(command "A" "D" dirpt)
- ~2 J# A+ I( {: A. _5 a1 q6 ]4 M(setq plist (cdr inv-plst))
) L$ j7 I3 v% o+ }1 {/ c& i(foreach p plist (command p)) % y. _4 O+ U# v+ C, c
(command "")
( \4 A% \6 ]: m# \4 u(entlast) " D5 ?+ y& {$ i9 m- B
); draw-inv 8 N; h( T7 {* \+ ?8 h' r
' v1 b% D k1 S: L2 G$ ~2 U( a) y(defun ext-trim (p0 DR D / trimcode dist endr)
4 A8 M, _6 H" r. K3 d4 W( o(if (> (car p0) (/ DR 2.0)) ; Extends the involute 1 P. Z( _) y- k0 x' n: ~
(progn
( z# @$ i5 S. X(command "LINE" (list (/ DR 2.0) 0) p0 "") # F9 [2 O2 ]8 p7 T
(setq trimcode 0) $ q) G! u$ ?7 f4 t L( {
); progn ) N6 U( ]2 v* m5 ~) [* @' m
); if
. I; ^' Z7 }6 L: N(if (< (car p0) (/ DR 2.0)) ; Trims the involute 5 n$ t: F7 Q0 N* o% }3 ^
(progn
9 b- e: B7 ?& f2 K(command "CIRCLE" "0,0" "D" DR); Root circle " o( ^' ^9 y1 b+ X7 [% S
(setq dist (- (/ D 2.0) (car p0)))
( }, P7 | W! n6 R l9 i(command "ZOOM" p0 # n8 { f- s4 u6 u6 {
(polar p0 0.6 dist)) W/ e) j, j& [0 |" Q$ |; J
(setq endr (entlast)) . r9 l7 ?+ p$ c
(command "TRIM" endr "" p0 "")
' W- d8 {% m, ~ A(command "ZOOM" "P") ! E% t* Z' t& t! E" I+ A
(entdel endr) : M7 R6 ~ R# {3 q% U' K& @5 L/ k
(setq trimcode 1)
& b( N1 f$ s" {! C+ d); progn " m2 J4 x1 Y; F
); if
: V, |! m" n, o2 |trimcode
0 s: J1 @9 T5 U7 h); ext-trim % }9 x* N: c5 c% Q
# Q* g9 U" K" s) o, |9 Q! |; E(defun draw-top-line (D DB N RO / theta-p xp yp alpha 2 F% v1 N' f" ~. h8 U
beta tang angend inv-endpt lend) 1 s" I& p$ s9 L2 e" L7 N' r
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) ; @( U9 ?2 [9 m2 }8 b9 \
xp (do-x (/ DB 2.0) theta-p); This section
$ `1 t3 A d7 w; s- y% |' ]yp (do-y (/ DB 2.0) theta-p); sets up angles
% c7 d- O# l$ {. o9 }alpha (atan yp xp) ; for drawing a / k5 y* \& i/ ~) B
abeta (angle (list 0 0) (last inv-plst)) ! \4 X( P9 _7 z& |5 a7 X0 }
beta (- abeta alpha) ; line across the
6 A' E( ~/ l+ O) N4 C( T0 mtang (/ pi N) ; top of a tooth # j% s/ K8 o' O# u- ?
angend (- (+ alpha tang) beta)
. ?+ i8 h1 Q7 C% Y2 d# r* L0 ninv-endpt (last inv-plst); This also creates
3 w4 G g7 i) \2 f- I7 o( R/ jlend (polar (list 0 0) angend RO); the tooth ) e0 Q( g" {" e+ m( s
); setq ; thickness. * B: g$ g! j/ {& a
(command "LINE" inv-endpt lend ""); Draws the line
' C3 p+ ~! f1 m! w- N(redraw) ; T7 O/ {5 U Q: A4 k; `
(entlast) 8 z! K$ o. i1 s& X; J
); draw-top-line / n. i. U+ J) a5 ~% I! @
' o9 I' I/ e/ L2 k(defun mir-it (cvent linent / pt)
: g9 e, p4 l8 Z% a( l" }& y(setq pt (dxf 11 linent)) ! m- {" u6 @0 S: z. A6 j; ?
(command "MIRROR" cvent "" "MID" pt "0,0" "") 9 Z6 q2 |0 f2 T- Y& y, S
(entlast)
" l# ]: N2 B+ {6 D. I% }); mir-it + s- \( t/ S9 m" I1 i
- o, A; ^ w( z W, N* ^
(defun segment (DR N en / p1 p2 ang dist midp p0 pang
R$ N' Z6 e1 o4 e l) m" Dpang2 p p3 ent3 entl1 entl2 en1 en2) ) }$ D/ b' t3 a b1 B
(setq p1 (dxf 10 en) ! R& f8 d/ `1 @0 i: m/ x8 j$ ?
p2 (dxf 11 en)
2 @! M' v S( z$ `- j6 G' nang (angle p1 p2) ( }6 f5 b0 Q9 F; @( ?
dist (/ (distance p1 p2) 2.0)
q- ~: j" Z6 s6 s3 B* u2 kmidp (polar p1 ang dist)
, t2 Z% [3 \, _, N8 jp0 (list 0 0) 2 @. i A" H/ t& ~
pang (angle p0 midp) + `" q* i5 }) ~9 z+ Y
pang2 (/ pi N) , `% b3 |0 ~% c1 Z5 ~3 F
p (polar p0 pang (/ DR 2.0))
# F0 Y0 m: e W* g; t. ?$ q! y3 Zp1 (polar p0 (- pang pang2) (/ DR 2.0)) 4 ]5 x: q% D8 Q$ ^; @4 q0 e
p2 (polar p0 (+ pang pang2) (/ DR 2.0))
" ^0 v/ d( A- Y7 |1 e1 S& L1 a! Wp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
) f( ] ^7 \$ ~. Dent3 (entlast); This is the tooth p-line
' T. m8 |! x" e1 J- g); setq
1 j/ y% C1 S8 E3 |& J- X% w' @% Q(command "ZOOM" "W" p3 p1) 5 M) D. ~. r( F4 T+ N7 e
(command "CIRCLE" "0,0" "D" DR) ;Root circle ! C5 g8 G5 f& H
(command "TRIM" ent3 "" p ""); Trim the root circle
& O* N) q8 [. ~6 o(command "ZOOM" "P")
3 b4 ~8 A: e6 v' {; \(command "LINE" p0 p1 "")
: R' j1 B5 j) J3 \: L(setq entl1 (entlast)) 1 |' u3 U4 R# K3 h" K. \* R
(command "LINE" p0 p2 "")
% C: ^ [& {: Q0 i# q" _- W" X" @) W(setq entl2 (entlast))
+ |3 p# Q8 `+ o) x3 J(command "TRIM" entl1 entl2 "" p3 "")
# |! U7 Z$ n% C) ~. a6 {(entdel entl1) # N" M& @, t2 G% A% c% @/ W" W6 |
(entdel entl2) - q+ |( ?3 |( Q, U
(entdel en)
/ J1 X- |( l: n/ R( d/ U4 S, n(command "ZOOM" "W" p3 p1) # i# _1 u* M1 k! l% u9 E( o
(command "PEDIT" p1 "Y" "X")
{7 i2 d3 n6 H& ]2 w3 A(setq en1 (entlast))
) ?2 x1 V0 Z# }! Z# M; K9 J/ }(command "PEDIT" p2 "Y" "X") 3 M5 f9 k) W; N" W
(setq en2 (entlast)) 7 m6 J! ?' a. p. E& N* k
(command "PEDIT" en1 "J" midp en2 "" "X")
& x& P h4 L" `) y(command "ZOOM" "P") . r8 M! |* I! e; O
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") 9 _) A8 k; {- B& Q% ?& F' Q7 b
); segment 4 e5 w$ ~- R' V% R
% U4 n3 G0 _7 }/ V% R(defun c:sg () " M% n$ W- S$ i* B4 i2 v
(setting)
& J6 i2 W: K% X: C" t3 \(spurgear)
w2 i; H, q. f+ v# Z, b( [7 T(resetting) 6 j! f* a8 {2 R" T& h; \- N
(princ)
& n4 e3 `& \, \ H8 @" M$ B); c:sg % K2 R; \, Y2 {0 q- t
7 q5 F& s3 G C ]
(prompt "\n**SPURGEAR.LSP Loaded!") $ U6 p& ?9 d% g+ ^* c0 R' C
(prompt "\n Enter 'SG' to start") 8 L, Z" a! c, w; L* } p9 S) ]
;;;end suprgear.lsp |
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发表于 2008-8-25 14:22