有下面一段渐开线程序：
! z" X* A' \2 A7 B' p8 b+ T;;;begain suprgear.lsp
* n; l) }) v/ c( j4 h- ^1 e) l& C;************************************************* % I$ _$ g% N) J4 l
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss 9 m( R! X8 @8 h+ [ M
;-------------------------------------------------
, g6 {3 ` Y) {$ f- C3 S; f; This routine draws a spur gear using joined
% y- g( h; w" ]. h5 |2 d- B; polylines. It lets you use any pressure angle
. q; X* t2 L7 \; to design the gear teeth.
4 n9 u9 Y6 H x: d' c: k;************************************************* 5 z- L8 ?5 l. H8 l0 ?4 c4 ~( | |
(defun err (s)
% R1 l2 J& D! ]. r' L(if (= s "Function cancelled") + U9 _8 e0 O+ D) D% A. u
(princ "\nSPURGEAR - cancelled: ") 9 A+ C; R; M K/ u" t
(progn (princ "\nSPURGEAR - Error: ") (princ s) ) S \1 H2 K) x) j7 t5 F
(terpri)) # P, D" W8 k2 U, ]6 r2 _& c# K
); if . F5 S( s. i; k! ]
(resetting) ; E) {4 N6 n" h" F$ n! K, J- a
(princ "SYSTEM VARIABLES have been reset\n") / a1 x2 z: H, X% |6 q9 T2 t
(princ) 5 c& q E) \% |, x2 G( |
); err
, c. s5 U# h2 Q, |! K- k0 p9 Q3 \7 M0 A8 l$ r; I. K/ F; @
(defun setv (systvar newval) * P) D7 ^9 u- H! n2 _! N
(setq x (read (strcat systvar "1")))
9 \9 ^* Q h* t& t- w- g(set x (getvar systvar)) 6 X6 Z* L4 k! g4 e- f
(setvar systvar newval)
3 Y( j* t4 \9 W* F$ F6 d); setv
5 j/ j1 [; I4 y$ E5 q2 Q% I2 o/ }/ B, z# l: r$ X9 y: v
(defun setting ()
3 Z1 r, g y. A(setq oerr *error*) & J! d5 p- [% O L3 V
(setq *error* err)
: i1 `2 N- H: ]% I/ C# a(setv "CMDECHO" 0) . W5 [2 O3 ]( p" L. u- R
(setv "BLIPMODE" 0)
) j& U# ^# G$ Q) j @) t8 @); end of setting
8 K- H8 c" Q' V3 B- V- M(defun rsetv (systvar) 5 m$ @2 @: w. I
(setq x (read (strcat systvar "1"))) 2 f6 Y6 {( L8 j* T" l. I
(setvar systvar (eval x)) - ^! h( x) Z: H) }* j1 a: a
); restv 2 X8 P7 J* ~/ q
(defun resetting () + {9 K* I) t V W; y/ B+ h) r9 @* j
(rsetv "CMDECHO")
7 O8 [0 T5 E# ^/ a(rsetv "BLIPMODE") 3 _: Q5 l2 x8 C
(setq *error* oerr)
# s9 c$ H* I; p6 E" z( [); end of resetting 8 u7 T' K& C) J2 Y
`/ }+ ]; M! ?1 O, E8 R
(defun dxf (code ename)
8 p1 g+ C3 Z9 r3 g(cdr (assoc code (entget ename))) ! O( U: k( O, M5 g4 L/ `
); dxf
4 ]; g0 }* O$ g& k8 G, T/ q( w0 o
& q: v8 V X$ B3 S(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 ~3 W3 J! V8 l0 {% X! Z' z
trimcode invent p0 p curvent linent linent2 ent2 p2) # Z- a. {/ o: m+ N
(setq D (getreal "\nPitch diameter: ") \( b" H8 Y0 [. V5 e
N (getint "\nNumber of teeth: ")
) H }( I8 w) o; q+ O/ Y' i& w% f' [phi (getreal "\nPressure angle: ") ' M, m/ S' J& K* [# d; l. t
phi (* (/ phi 180) pi) ; Pressure angle " V& s8 e" i0 k+ N, K8 _
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter + x# o! i1 [% O2 x" m& h$ x
RO (/ DO 2.0) ; Outside radius
) F2 P3 T, e3 l1 J3 o+ ^9 i/ MA (/ D N) ; Addendum
5 h5 c0 }; e$ D) SB (* 1.25 A) ; Dedendum
3 k9 e2 `. v8 K8 nDR (- D (* B 2.0)) ; Root diameter ; V1 @9 r# @4 o& n1 q2 S4 w6 h# E
DB (* D (cos phi)) ; Base circle dia. + M5 }4 F9 i/ ^3 H) V* b5 c! K% K
inv-plst (involute DB N phi);involute points 1 H- g: {% S6 C1 w- K* k
trimcode nil 1 O- g" J6 d2 u0 S) h2 Y
); setq
, D1 j+ \8 { |9 P( A& e& o(command "ZOOM" (list 0 (- B))
' A& F& f7 ]3 ?( {! j(list RO (/ RO 1.5))
" M4 m- k, z! U, v( M$ |); command ) L& o$ h# Z1 F N7 g. X% F
(setq invent (draw-inv inv-plst)); Draw involute.
: H7 m: ?1 M/ e. Z(setq p0 (car inv-plst) 2 n M% c0 E8 s0 @) Y( t! X& P8 V
trimcode (ext-trim p0 DR D);trim or extend R1 F" ~9 Y) f8 [& K' [
); setq ; the involute.
" H! n, b: r1 L) z+ Q6 L. A( [(if (and trimcode (= trimcode 0)) / f( a9 n2 q, |4 v
(progn ; Joins the involute to the extension.
, D; o! [- m6 E% N D(setq p (list (/ DR 2.0) 0))
" P$ L$ `# w% b, x5 S4 S3 l(command "PEDIT" p "Y" "J" invent "" "X") ; g: z: o- z/ U* g
(setq curvent (entlast)) 8 U+ c, R* f3 I+ {8 R( Y) m, a
); progn
, \# t' A! D J: F) o6 q# v) c(setq curvent (entlast))
- V, k1 v: F1 _' S' R8 S- _& d' F); if
: t2 v! v p# e/ K& B: L( {) a" V4 ^(if (null trimcode) (setq curvent invent)) 3 c% L" ~" H2 c3 |/ R
(setq linent (draw-top-line D DB N RO)); top line. ! j4 W: Y8 b7 t) ?
(command "COPY" linent "" "0,0" "0,0")
. B2 w5 ]! h! ]2 W# o7 i; k(setq linent2 (entlast)) , n8 t- Q3 F/ a$ F P1 k) {& [
(setq ent2 (mir-it curvent linent)); mirror curve
8 | @/ M) w4 K* Z% p- D(command "PEDIT" curvent "J" linent ent2 "" "X")
" O! V$ S, ^9 t! \# B# b(segment DR N linent2) ; Finish the job!
3 m0 E% }" y3 R# t. W) @(setq p1 (list (- RO) (- RO))) 5 q5 |& U9 D7 p1 K' ]" k! y
(setq p2 (list RO RO)) 5 R! a$ @5 o3 z% y1 l" }! o$ X
(command "ZOOM" p1 p2) : B7 N5 y% E4 m1 ^3 p
(prompt "\nConverting to POLYLINE, please wait...") 4 S7 o5 k& l! ~ X! Z/ D
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
1 }3 G3 }" j8 T; H% q! Z(prompt "\nAll done!")
9 T( Z% K4 Y( T( d5 a1 |); spurgear
- x( J0 ~3 c& t* k) i# t; D* F. [/ g, f
(defun involute (DB N phi / numer denom frac theta2max ' \8 j; {1 {# r4 n
thetamax theta-inc theta plist RB xval yval p) ; j1 n$ r& X1 O' c
(setq invfact 3)
: M& }3 O- ~; r1 r(setq numer (+ N 2.0) 8 F2 @+ R' | L8 _. y
denom (* N (cos phi))
( [4 }- @ ~5 Efrac (/ numer denom)
/ k% g- O( a: ?% p4 r8 w5 xtheta2max (- (* frac frac) 1) ; N' ~# a* @. z8 N
thetamax (sqrt theta2max)
( K l9 {7 `9 @ @theta-inc (/ thetamax (float invfact)) $ _0 z3 e6 u" a# O+ ^1 t+ J
theta 0
# C* ]: X8 a" C+ l1 ~plist nil ( l/ }% Q: {% F1 h" Z
RB (/ DB 2.0)
' t% Y3 r, s9 a0 ?* D7 O); setq
1 Q# |+ I9 }; h7 z, l N9 k0 v(repeat (1+ invfact) ' j8 Z. P! i) E V
(setq xval (do-x RB theta) 1 W" y2 y: C# v9 E
yval (do-y RB theta)
! g5 q% u1 O1 W8 }p (list xval yval) * V) U! D- ^' Q/ O/ o( q0 T+ ~
plist (append plist (list p)) ! O% A; K1 x9 T/ F, D, V* B# ^
); setq
1 @3 D R% m/ W1 k8 K(setq theta (+ theta theta-inc)) 4 o) c. q2 V+ ]
); repeat
+ P, \4 z; p# Z; g' I n5 E6 K! f! Yplist 3 _) ?, f0 P' U$ C1 K4 ~+ h
); involute
8 b4 D0 J& w1 T2 {- F6 v( p, l1 s; G7 C* B9 Y- K v. G
(defun do-x (RB theta)
0 R8 t. q- o1 g* k, C8 F(* RB (+ (cos theta) (* theta (sin theta)))) F( H# B% s6 _( U
); do-x ) F4 G- T( F/ j
' t0 |) z0 ~# ]3 m/ I6 d/ T2 t(defun do-y (RB theta) ; i- B* T' p9 o. i2 z/ d' X4 }
(* RB (- (sin theta) (* theta (cos theta)))) / k! _0 l- U/ i4 r" a' D
); do-y
; t: k g9 {( U/ _4 n. V' t# i) }" G$ c2 J
(defun draw-inv (inv-plst / dirpt plist p) 5 {1 k% v; [' `( f2 B# v
(command "PLINE" (nth 0 inv-plst)) + \0 O) |% i' J
(setq dirpt (polar (nth 0 inv-plst) 0 1)) 3 w' t- N; \) h7 C6 x; r) I# I" h
(command "A" "D" dirpt) E; f2 L6 t5 n) J
(setq plist (cdr inv-plst)) / B& A1 f/ X2 D4 l6 m0 f
(foreach p plist (command p)) $ c( A* `+ U6 U i/ E
(command "")
. D" f( D5 i1 C. U' E2 v: `(entlast) 5 ?8 j0 t; R3 X9 [
); draw-inv $ D7 p; R- x0 g1 R L
- R6 Q; T& w+ B(defun ext-trim (p0 DR D / trimcode dist endr)
7 ]8 X3 `9 C9 m* U1 l) `7 A(if (> (car p0) (/ DR 2.0)) ; Extends the involute * [( G, h1 f8 ~. b" v
(progn
5 q. \8 p2 B y(command "LINE" (list (/ DR 2.0) 0) p0 "")
' }3 I4 R" T5 [(setq trimcode 0) . `/ Q) i' M U# T! R/ _
); progn
2 R' N9 f6 d; ^); if : G# v* |8 Y! i( L5 Z" N0 ^0 g
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
: a j+ m1 H, i7 F, g' ^ J(progn
8 q+ f' M o3 g0 @(command "CIRCLE" "0,0" "D" DR); Root circle ! G% L" x: n: N9 _4 p. Z4 G
(setq dist (- (/ D 2.0) (car p0)))
2 f# u8 B$ Z5 z0 f(command "ZOOM" p0 ! r0 S+ r, `* R6 l$ @6 E: s
(polar p0 0.6 dist))
8 M+ c9 w- c4 {6 s, y+ C, n(setq endr (entlast)) 3 G3 x0 z- Y1 g3 Z( K
(command "TRIM" endr "" p0 "")
7 \ ]8 g8 f' C c9 y) V T(command "ZOOM" "P")
$ k- }0 c# d, k" l; p1 v8 T(entdel endr)
2 K; f }$ H* j) W; V(setq trimcode 1) 3 N( p$ s, r" M) _
); progn
3 w5 X$ N, H" ~' j) X); if
( ^% a1 ^$ l, ktrimcode ) H2 z& V% A$ M
); ext-trim 1 F3 s5 s5 k @7 F" F& m
* q X* o' b; R1 h, o2 Z(defun draw-top-line (D DB N RO / theta-p xp yp alpha
( ^1 e/ M. T) }/ W3 j/ `beta tang angend inv-endpt lend) % ]! b c7 n+ w7 `
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) 4 o" s+ X7 {: S; Y9 m) J ?
xp (do-x (/ DB 2.0) theta-p); This section
& I! m$ w. _7 [) E5 iyp (do-y (/ DB 2.0) theta-p); sets up angles - L# B# h* g3 l9 \" r
alpha (atan yp xp) ; for drawing a
G& ]' b2 [1 w! I% q! ^3 Pabeta (angle (list 0 0) (last inv-plst))
( ?4 f4 Y' m( e. Fbeta (- abeta alpha) ; line across the
5 v# I( _/ p+ Q' P3 C" g3 Ttang (/ pi N) ; top of a tooth U; L4 {$ [4 E7 F) b5 V7 U
angend (- (+ alpha tang) beta)
% y% N: D, T0 O( b6 rinv-endpt (last inv-plst); This also creates 7 _5 K8 c' @6 e; U' v9 ^" V
lend (polar (list 0 0) angend RO); the tooth / V- N( x/ k* @: u+ H8 M7 n6 x
); setq ; thickness.
! j, H) S# X( P4 x4 w( c(command "LINE" inv-endpt lend ""); Draws the line
6 P; k j! q$ P" s) K }(redraw)
( U- @9 h, ]) d(entlast) 5 ^/ E2 T* d0 f' T
); draw-top-line \" j% N" p4 ^! @4 h
* _2 q% T4 F/ k E; K(defun mir-it (cvent linent / pt)
" r( w5 O8 a7 ]9 f+ X(setq pt (dxf 11 linent)) , P# A' M6 I- L0 W. o- R, s/ e
(command "MIRROR" cvent "" "MID" pt "0,0" "")
3 v: ], D: e) ^(entlast)
2 B1 F2 X) S" z3 \# R); mir-it
; S! b5 Q$ |" A Z* t4 L' b% k" l0 b3 S& i. i, f$ V
(defun segment (DR N en / p1 p2 ang dist midp p0 pang ' B. b4 z/ u8 e8 o
pang2 p p3 ent3 entl1 entl2 en1 en2) 9 N2 B* K' d* ~
(setq p1 (dxf 10 en)
% [0 ~! h! r1 [& A: zp2 (dxf 11 en) # d! ~4 W8 H0 X( p ]- Y# n
ang (angle p1 p2) 2 \6 |# V1 @. J/ I' d
dist (/ (distance p1 p2) 2.0)
k! m% S: B4 Q* A3 Nmidp (polar p1 ang dist)
! Y- Q0 f8 [3 f+ s+ Vp0 (list 0 0) 5 e. e. J& @+ ~3 f: }+ ?
pang (angle p0 midp)
# ^& w7 L: x/ @; J ]3 u3 zpang2 (/ pi N)
7 n7 L4 p$ |) hp (polar p0 pang (/ DR 2.0))
- M f# q; C: t; f6 w, I3 q2 |p1 (polar p0 (- pang pang2) (/ DR 2.0))
- V0 F, |9 t2 x, h* lp2 (polar p0 (+ pang pang2) (/ DR 2.0)) 4 h5 v- U' D( I9 {+ r
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
. @0 q- {$ r6 n, h4 H5 ient3 (entlast); This is the tooth p-line & W0 J! }* o1 z6 k8 y
); setq % q* W6 e. M8 S
(command "ZOOM" "W" p3 p1)
& r2 @+ l$ J9 o5 Z f( d(command "CIRCLE" "0,0" "D" DR) ;Root circle
4 H& @4 Q; V1 B T% W& m(command "TRIM" ent3 "" p ""); Trim the root circle
2 c2 ~4 D; V8 e8 o! m- e0 g(command "ZOOM" "P") 7 B/ {; \+ H" f% h% {; {0 u+ |5 l
(command "LINE" p0 p1 "") e) p( k# t6 Y; M
(setq entl1 (entlast))
X6 H% |* t* Y J' }(command "LINE" p0 p2 "") 4 _4 A+ }6 a0 h& |, d( x! Z
(setq entl2 (entlast))
! l: s9 F! ^. I/ ?( G(command "TRIM" entl1 entl2 "" p3 "") & A" h3 E, A0 L
(entdel entl1) # [. g$ }6 x; S: j
(entdel entl2)
- k5 a# B% T4 a% O% L. E(entdel en) # o+ B- V( f0 ^' V, d$ @; ?
(command "ZOOM" "W" p3 p1) 0 ?+ m$ E9 P/ a1 \
(command "PEDIT" p1 "Y" "X") : |' O2 I$ s1 `, [2 \5 @
(setq en1 (entlast))
}& K1 ~" E( s(command "PEDIT" p2 "Y" "X")
. c P0 D( U: X, b0 d(setq en2 (entlast)) - e0 d: l& c5 S2 m- w5 M7 W( W
(command "PEDIT" en1 "J" midp en2 "" "X")
) L5 @7 @" H" K- l, @(command "ZOOM" "P") ' H, S8 k. |/ U+ ?( Y+ [4 B `
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") 9 _6 c5 Q$ s$ @$ j; o4 a- b- x' _9 m
); segment
* _) W. Q# b* P ~2 w1 e6 F
0 O+ i8 D0 ]6 N8 @(defun c:sg ()
+ @* W Y, @. R9 I, T(setting) . m9 y) o% l! ~5 c0 X
(spurgear) 0 K% @; B; q+ J5 P- c
(resetting)
3 Y3 C/ D2 a$ m `5 G4 Y2 k0 P(princ) + Y* u' Q5 x0 x
); c:sg 1 `0 u3 q) i# s
( F) |3 K! H; D) z" s" \
(prompt "\n**SPURGEAR.LSP Loaded!")
6 v; B6 k3 O, m. ]% O+ h(prompt "\n Enter 'SG' to start") 1 f6 H/ `0 m$ D3 a
;;;end suprgear.lsp
- h# O# y) ~, Z8 B" I打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
0 u2 V( s5 M; u3 }! O8 M".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输( Y$ c6 F2 M' @# I
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
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