有下面一段渐开线程序：) H& s& n/ s) k: L E: m" D
;;;begain suprgear.lsp
# Q3 p% U, E$ W) C;*************************************************
/ F' F/ P( p% Q8 y& q;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
* s/ s- B' G3 A+ g; O2 j;------------------------------------------------- : M0 y. k+ F5 L G) V( [
; This routine draws a spur gear using joined ; d6 T6 `' T3 p* l& \, D
; polylines. It lets you use any pressure angle
0 f2 X7 R- k' J( U4 ` w; to design the gear teeth.
+ L7 m2 S1 O/ q$ t7 M" B, L;*************************************************
; D8 V0 w) ^" t/ L1 J( i(defun err (s) . b& R5 ?! G8 I d5 Y4 _ N
(if (= s "Function cancelled") 3 l8 Q4 i; @/ e4 r
(princ "\nSPURGEAR - cancelled: ") 3 U4 U* {, W. Q1 X. ?5 o4 Z" R
(progn (princ "\nSPURGEAR - Error: ") (princ s) , [. ^) X4 n3 L6 i. X# ?9 q
(terpri)) 3 _ D) l" L4 ~" k4 z# Y+ c
); if
7 y5 n; u. S- L+ {% `(resetting)
6 K4 j! ^- _% d/ t, x$ h |: Y(princ "SYSTEM VARIABLES have been reset\n") . Y& T+ H5 [1 m' D: r' N1 q" r5 u
(princ) 2 `& H. C/ i/ p6 x! k
); err
) f; ], q( {4 w; x
8 h5 u( ]5 n0 d# ~5 G(defun setv (systvar newval) 3 c: T) m5 m( f0 Q! {7 \8 I8 k
(setq x (read (strcat systvar "1"))) 9 o0 [ Q2 B3 ^" n" c
(set x (getvar systvar))
! d/ \9 d3 {- [ x2 w(setvar systvar newval) / N7 _7 z7 k/ ?$ T* D+ `. _
); setv & T. v* Z0 s* V$ W; ?3 Y! R
8 f) O! n8 j+ I( f8 m
(defun setting () - q1 ^2 z6 e4 g" e) B
(setq oerr *error*) 9 P* V! \3 u* c' k" @. g4 @8 z
(setq *error* err) - C! N5 Q$ k5 h( U4 Q" D3 A
(setv "CMDECHO" 0) , z7 ?# d- O% z
(setv "BLIPMODE" 0)
) z: J( ?: x) C" i+ M [4 r3 A); end of setting & t: A( b1 p2 a
(defun rsetv (systvar) : t& n$ e. Q1 i' P4 k
(setq x (read (strcat systvar "1"))) ! q8 j# H6 w( ]
(setvar systvar (eval x)) 3 m: E/ ?( W! |) ^7 Q- S9 R$ p
); restv ( Z+ U* @1 `3 R5 L& M/ e
(defun resetting () , R4 R8 m1 F/ j6 R( H; R& }
(rsetv "CMDECHO")
$ z* x" f2 b6 ^% h Z; A(rsetv "BLIPMODE") 3 `& k4 S7 ^* H
(setq *error* oerr) / N6 U3 f" w6 A& o6 v6 i$ X- F
); end of resetting
) g4 L; M% }0 x8 }4 U, S, N
# V9 Q8 E2 ^( f& w1 [) y(defun dxf (code ename)
Q) Q% @) a% G(cdr (assoc code (entget ename))) 7 J X% D, R/ Z8 n. T
); dxf
0 s; O: E3 S( ~1 ?0 U! R; Y: R( E. ]8 @& b8 V4 A$ f
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 1 N$ E c* ~4 `4 b1 P
trimcode invent p0 p curvent linent linent2 ent2 p2)
, x! Y' C6 ~6 O! S9 f8 E# S(setq D (getreal "\nPitch diameter: ") ; k% i# f, q& k7 ^! U
N (getint "\nNumber of teeth: ")
/ i9 Q. f* O$ y3 w4 q- J, }5 Pphi (getreal "\nPressure angle: ")
( h0 a$ t* ]- ?0 {9 \( Ophi (* (/ phi 180) pi) ; Pressure angle ( w6 c1 J) V3 I% p7 U- M
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
* A+ K1 S! B5 x* P6 V. |RO (/ DO 2.0) ; Outside radius ' _. B8 _. T) o7 {
A (/ D N) ; Addendum
. i6 O6 X4 {6 wB (* 1.25 A) ; Dedendum c( q) a1 L& }! L7 N' U
DR (- D (* B 2.0)) ; Root diameter
0 ?1 M" W4 m1 T qDB (* D (cos phi)) ; Base circle dia.
9 G6 P. j" L' L& s4 Z2 T4 l! Cinv-plst (involute DB N phi);involute points , p" s$ S) `% z! p9 ^
trimcode nil
" [! c, O4 }' _/ @1 `); setq
/ P" @$ t T: A: ^- \(command "ZOOM" (list 0 (- B))
$ V* _5 R) Z( N7 P" C% N. l9 X$ ?(list RO (/ RO 1.5)) ' W( k! A5 h7 Z: s( M/ I1 z# Z
); command
! K. N" F: P! u6 S3 a- ?% M% U `3 S# K(setq invent (draw-inv inv-plst)); Draw involute.
; l9 T' Y' P& y; M' P3 Y( y2 A8 }(setq p0 (car inv-plst)
2 r4 H% I5 O% |/ _: X3 _; ^8 qtrimcode (ext-trim p0 DR D);trim or extend - ~/ g7 Y1 ~. z. y( _" O
); setq ; the involute.
/ y- h5 i+ x1 {+ c(if (and trimcode (= trimcode 0))
s, j4 X9 ?9 p2 Q1 d J- P(progn ; Joins the involute to the extension. ( d! t- P8 Y/ r4 {! q0 G
(setq p (list (/ DR 2.0) 0))
4 W& l/ J/ G3 ^( ]+ q2 w( z) \(command "PEDIT" p "Y" "J" invent "" "X")
- l9 z: t$ v2 p: z$ d4 F(setq curvent (entlast))
2 m/ \3 m9 n9 z/ k w; A' c); progn
$ B' w0 Z9 i* c- E9 L& C(setq curvent (entlast)) 8 n: f: X7 G0 G$ m j
); if - R% }8 w- U0 ?1 Z: |" X
(if (null trimcode) (setq curvent invent))
( E- |3 [! i+ z8 n" _. w(setq linent (draw-top-line D DB N RO)); top line. # N" k0 J' C; ]4 i- A
(command "COPY" linent "" "0,0" "0,0") ! {% @5 |, s( ]6 t* V0 U
(setq linent2 (entlast)) 0 N1 M5 [ F. H+ U5 ]7 x
(setq ent2 (mir-it curvent linent)); mirror curve
- i6 d4 Y$ g7 H9 l0 s8 w$ H- v(command "PEDIT" curvent "J" linent ent2 "" "X")
& }' R* Q. n4 m" k' p2 `(segment DR N linent2) ; Finish the job!
' c- B! n( \4 d' e5 ?$ X8 k(setq p1 (list (- RO) (- RO)))
) V' H3 u0 \# v9 W- {(setq p2 (list RO RO)) 9 C. Q+ E* z, P2 k1 o+ V4 V! x
(command "ZOOM" p1 p2) ) o# W6 o* O) K- K; o. r
(prompt "\nConverting to POLYLINE, please wait...")
4 I' b6 g0 I8 c0 Y(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") : t% |* h5 F% N7 C; f6 E7 P
(prompt "\nAll done!") / W: P6 J- ]% T/ l) Y
); spurgear
/ h& C" w! x. R9 o9 g# b
/ s! ?. p; b) |# y* }0 e2 P. G, L(defun involute (DB N phi / numer denom frac theta2max & z7 @: p" _" ?0 r( }0 P' R
thetamax theta-inc theta plist RB xval yval p)
/ D4 b0 x9 W1 y1 g( X% ?+ b/ @(setq invfact 3) 1 m, {6 N& J8 M+ D8 O( Q- x3 y
(setq numer (+ N 2.0) 3 L& U+ I5 z I7 T4 k
denom (* N (cos phi)) / ~" h5 Q7 m0 F, w' ?+ _( [3 c, y& a$ j
frac (/ numer denom)
6 D5 n8 ~0 m1 Q- ~- [theta2max (- (* frac frac) 1) & j1 j; l# ?( i' q+ d# ^
thetamax (sqrt theta2max) $ v" a# F* n( {3 a; u+ m6 N& ~
theta-inc (/ thetamax (float invfact))
; T* U7 K; ~, o q' q/ c2 o* [* Ptheta 0
" |" L' }- L: l1 G( splist nil . p* q/ w& _# c' R, D3 ?# m: E0 a
RB (/ DB 2.0) " H+ O% R1 H3 O( Q i# o
); setq 5 z, i' x8 B _4 f6 X/ a
(repeat (1+ invfact) 5 o% o, Z/ @5 L/ G
(setq xval (do-x RB theta) % x- N, W& Y8 u
yval (do-y RB theta) 0 d/ Q: _* m i8 ]& u
p (list xval yval)
; S: p, w& q5 P1 _plist (append plist (list p)) 4 H6 R- Y* C+ D
); setq
( I; Z6 C2 m) l; K; ? m4 Z; e(setq theta (+ theta theta-inc)) , y( m7 m9 z7 O( F l1 x) |
); repeat " m, A! ?: x" Q' A% k0 n) C7 m
plist
6 v' U5 h: J' a; x4 F); involute 5 v4 k$ r+ b9 m4 e; ]/ E; r
0 @- m; Z: J; q6 M) R# r(defun do-x (RB theta) 0 D" i: m2 B. i4 ~# d; P1 [' ^& h' v
(* RB (+ (cos theta) (* theta (sin theta))))
8 ?2 s) A% R& r); do-x 3 R3 P. X' n# L; ?
! W1 \8 K$ Q/ t/ @% v8 ]4 I" e0 D(defun do-y (RB theta) ( S0 B, h9 v& _9 D
(* RB (- (sin theta) (* theta (cos theta)))) ; d9 i. d. a& I9 Z# O. W3 J) e
); do-y 0 G7 s% `+ f J6 a8 d, m
8 U! T# q; r3 N6 o& n(defun draw-inv (inv-plst / dirpt plist p) 0 i* Y2 X9 q; {
(command "PLINE" (nth 0 inv-plst))
2 U `. _, q r, l- P( @: n' U(setq dirpt (polar (nth 0 inv-plst) 0 1)) # q. l4 X7 `" X4 n9 Z! y
(command "A" "D" dirpt) ) ]1 w$ D7 W% _2 y6 r$ Y& |
(setq plist (cdr inv-plst))
$ H5 _" _ s# E4 l(foreach p plist (command p))
; g ~+ E; m. _0 ^; |: I9 ~6 B6 H(command "")
* Z4 U% ]5 H9 r2 K1 I(entlast)
$ Q1 J% a: L& A& ^! u) I& t. q: ^. r); draw-inv ) u% D$ e* P E2 c( T2 G
9 A9 Q. E& y3 f* v2 f(defun ext-trim (p0 DR D / trimcode dist endr)
G7 e7 ^% A4 b6 {8 o/ _5 a(if (> (car p0) (/ DR 2.0)) ; Extends the involute
/ V/ c$ ~% @+ Y4 M# ?8 X4 o- k(progn
4 l8 }0 V1 R4 \(command "LINE" (list (/ DR 2.0) 0) p0 "") . \* v- A3 P0 p# W8 d4 X
(setq trimcode 0) 5 b5 _0 f! E) P9 n1 i/ Z% S* ]
); progn 6 L) r. _, i- e0 n4 I7 ^$ U; Y8 U
); if
# p# L' K- C* r8 q$ x6 N(if (< (car p0) (/ DR 2.0)) ; Trims the involute 8 b4 w7 V8 m# k* z' G3 o
(progn 2 u3 q) ? a( w2 m; C3 c6 h6 p4 p
(command "CIRCLE" "0,0" "D" DR); Root circle
( u/ J; s t5 N; B3 P(setq dist (- (/ D 2.0) (car p0)))
+ [! I2 g8 Q$ R; o* L x( A. e& X3 y(command "ZOOM" p0 : ~2 o/ j9 ]( w# I
(polar p0 0.6 dist))
, I: s- X4 m% w# D/ x(setq endr (entlast)) $ ?. \, V. m9 @' A
(command "TRIM" endr "" p0 "")
6 e9 M: l8 e( u$ {6 @4 u- h(command "ZOOM" "P") 1 X# a9 x' Y2 H1 v4 \# M
(entdel endr) # c7 B5 h5 r& `1 \, I
(setq trimcode 1)
! O! E, }' V4 |8 Z0 ^, Z/ P); progn
5 c& h- g& p+ k) N, L+ f); if
y. ~6 [) f: D7 P" o a. Ctrimcode
- i$ j s3 }. r, b); ext-trim ! `) s" j5 c: a. X+ U. W& f
5 o3 @- Y, ?- c7 C1 f: q" D# z1 T5 Z(defun draw-top-line (D DB N RO / theta-p xp yp alpha 4 x) A! V4 B( T" q
beta tang angend inv-endpt lend)
$ W8 v# S4 m: e' \: Z( h(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) * \4 P# [. x& b Y- z. m' n
xp (do-x (/ DB 2.0) theta-p); This section " f2 J+ k, n$ O. n' m9 K
yp (do-y (/ DB 2.0) theta-p); sets up angles
4 |% s% b. p5 }. Qalpha (atan yp xp) ; for drawing a
: p4 v. a8 ]8 H habeta (angle (list 0 0) (last inv-plst))
1 p5 e( q- v1 K) P9 r7 vbeta (- abeta alpha) ; line across the
/ k1 |1 j& ]* ~: [tang (/ pi N) ; top of a tooth 7 H8 R2 [; a' f/ E h3 w8 {
angend (- (+ alpha tang) beta)
% @3 F+ N1 |0 ?3 {" v! f! E0 |inv-endpt (last inv-plst); This also creates 0 ~: U1 O* Q$ n. h4 U5 D
lend (polar (list 0 0) angend RO); the tooth
* d, W& T( o" M2 L( T3 K- r) e); setq ; thickness.
: q9 v1 d$ n/ C(command "LINE" inv-endpt lend ""); Draws the line
, O9 A* [+ b3 Z(redraw) k+ m1 \) y1 v+ g" S& A
(entlast) . C# Y1 _% e- v3 ?3 P, {0 R! `1 m
); draw-top-line
c# F" \5 a6 J4 c, W1 _; W, J1 q3 T5 V d* J. C7 z
(defun mir-it (cvent linent / pt)
% V: y/ Y! m) q0 {(setq pt (dxf 11 linent)) , P6 X( K9 j- F$ A! y3 I. Y9 [) D' u
(command "MIRROR" cvent "" "MID" pt "0,0" "")
0 V" J( V/ d# c( O& A0 s(entlast)
+ |1 F% C+ H, ~); mir-it
8 P, o4 A! [" b* Z7 G( } {7 E9 K! U/ m' J0 f- X, u1 O/ `
(defun segment (DR N en / p1 p2 ang dist midp p0 pang 4 d2 v9 R1 N$ K4 o; l' p
pang2 p p3 ent3 entl1 entl2 en1 en2) . B. h" Y8 w- ?- U; s( ?& t
(setq p1 (dxf 10 en)
/ n+ x4 J- Y9 z9 R8 E" @* Qp2 (dxf 11 en) " D. J8 D$ z6 l# ?' m3 ^4 m/ q
ang (angle p1 p2)
6 G2 j" V* c# h( f5 [dist (/ (distance p1 p2) 2.0)
3 ]7 K$ f, N1 R& Y9 R# Ymidp (polar p1 ang dist) " K. t! ?- u: u
p0 (list 0 0)
) B& c2 l9 G- z+ F* spang (angle p0 midp) * u$ w6 \3 x7 a. a3 ?6 x9 ~
pang2 (/ pi N)
; o, W+ D, o0 ]p (polar p0 pang (/ DR 2.0)) ; F* Q U) J0 `; [) }
p1 (polar p0 (- pang pang2) (/ DR 2.0))
. Q# y. G- p! o9 M0 W1 `p2 (polar p0 (+ pang pang2) (/ DR 2.0)) + J: e! o' B5 O- M" s) C5 ~2 ~: d
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) : [& I5 X* ~6 f
ent3 (entlast); This is the tooth p-line
6 T( ~ F9 P4 ~ Q) K; G- K); setq / ?- m/ I& \, z/ [! |
(command "ZOOM" "W" p3 p1)
+ `* Y% `. F3 B& A$ v(command "CIRCLE" "0,0" "D" DR) ;Root circle
) v7 d: _% _' z; z, Q4 k(command "TRIM" ent3 "" p ""); Trim the root circle
, A1 ^% l" V% i. L+ w7 ~(command "ZOOM" "P")
% d0 {/ C' J# A) F; d, L5 \(command "LINE" p0 p1 "") ) ~5 Z: M# X1 A! @0 @7 d: U5 B9 \. O0 Y
(setq entl1 (entlast))
+ u. M. q" c- n(command "LINE" p0 p2 "") % R& g( B0 m/ ^
(setq entl2 (entlast))
% B! p4 g5 {6 x! t(command "TRIM" entl1 entl2 "" p3 "") 2 ]: R+ K, n0 w5 ]! R: Z& G
(entdel entl1) + v5 W5 a( c3 H; p
(entdel entl2)
$ B; ]8 D" V& [" W$ D' E(entdel en) % f2 b6 U# {/ G6 }8 c, l
(command "ZOOM" "W" p3 p1)
" J+ \* }* ^8 x2 ~; @ | E(command "PEDIT" p1 "Y" "X")
" m1 z* O, d6 f, [0 i" P(setq en1 (entlast))
1 B0 n+ ^9 ]9 V2 l(command "PEDIT" p2 "Y" "X")
% F4 B' C" H/ S% O5 v(setq en2 (entlast))
" C* I. y& s- N; n) _% B(command "PEDIT" en1 "J" midp en2 "" "X") # m0 r7 B9 r0 V. m( }' Z4 a
(command "ZOOM" "P")
' w$ z4 P \. ?3 e(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
* s% `* ?' j! f. L& w); segment
3 X+ U/ m! q4 F' K. @, d9 M
+ V1 x" D% _3 C6 w* m: ^6 ?' L(defun c:sg ()
9 O) _7 }+ ]/ v2 V% l7 {(setting) 3 J; V; H! o7 s1 j
(spurgear)
- e; i* d9 @: `9 [(resetting) : v. P+ a7 l Y
(princ)
2 o8 }0 T$ A- ?$ W); c:sg 1 e/ v! R7 ~% r; o6 G. O
& c1 n4 q$ W% D9 ]1 j! U(prompt "\n**SPURGEAR.LSP Loaded!") 5 P7 V9 J( Z; k; q @
(prompt "\n Enter 'SG' to start")
1 E1 t4 A9 A" ^, N;;;end suprgear.lsp
* Z, @- M. c i$ c. r打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
, s @9 f9 V6 g; u" q, N$ Z".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输, L3 W4 O" _" S9 K$ i p
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
