有下面一段渐开线程序：
* _7 z! ~* Z* E# R. s;;;begain suprgear.lsp * u8 |* n( a8 ]3 Y% H5 {
;************************************************* 6 Q' _9 t- B) V) O* q7 [3 J( r
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
2 n! x* M0 O6 [2 ~;------------------------------------------------- 2 Q l0 ~; v! ] u
; This routine draws a spur gear using joined ! K; U! Q' h. G: J; H
; polylines. It lets you use any pressure angle 1 L( s: x- `- A1 f6 ]
; to design the gear teeth.
8 [. u* q$ {6 F! a# A) u) O;*************************************************
5 J: _! n1 R; [( q* T& j3 a# L(defun err (s)
' H/ p3 r0 V8 _9 R" S/ x3 b" G% d(if (= s "Function cancelled") 8 O( P) }% B# H# C1 L
(princ "\nSPURGEAR - cancelled: ") + t$ P, E2 R8 D/ I0 V7 y* s; k2 E
(progn (princ "\nSPURGEAR - Error: ") (princ s)
( k' K; L! K9 v- M$ h/ g(terpri)) ) `0 y# j9 @1 D; e
); if
' T, O; z* O( Q(resetting)
1 y! j7 g' o/ j. T# L3 I+ e(princ "SYSTEM VARIABLES have been reset\n") C5 \" b* X0 m# J
(princ) 7 `8 ^; y5 }5 r: j
); err 9 Z$ s6 r" v4 t( j+ }+ _
7 N( Q* N7 C6 l+ n; E ~6 }. O
(defun setv (systvar newval)
# g: z" F _! {6 {& ](setq x (read (strcat systvar "1")))
" S; D$ B# G0 P r" \2 ?(set x (getvar systvar)) 5 `: W4 ]2 E: v& p$ d1 P
(setvar systvar newval) ! W/ e7 b3 m" C- U: V+ g
); setv 4 G% U. j5 N" W, M8 d; S P
4 r0 Q+ h; }/ c8 t: T(defun setting () : P! S* j. A; s* k( p4 ~; b0 d" i
(setq oerr *error*)
# d( X! q! G- K3 L( p(setq *error* err) " G1 {! y9 I9 C) h
(setv "CMDECHO" 0) & }$ Q3 h( v- S: y' P/ @
(setv "BLIPMODE" 0)
$ J X( ]2 ?2 C& V% ?1 I); end of setting
' a% `. @$ g& F m) k0 f(defun rsetv (systvar)
+ f/ j [# g4 T3 J(setq x (read (strcat systvar "1")))
) R! j5 P; c6 j. }) N* }7 y$ D(setvar systvar (eval x))
% m- V0 D6 G& |, f); restv ! u" }. I; G6 U# C% Z
(defun resetting ()
9 E; b9 |. q3 n% G' \6 t$ n(rsetv "CMDECHO") / N" V0 s/ E6 O' ~3 M7 O& S
(rsetv "BLIPMODE")
* Y$ j {9 G1 r8 l(setq *error* oerr) # z$ K/ L2 n( g ]9 K3 B
); end of resetting
| g |- h9 D% H4 V
6 k$ s* f' p8 c. F# y7 F(defun dxf (code ename)
# s: H9 K+ z) x+ B(cdr (assoc code (entget ename))) 2 P* `- |; Y h* J7 N- w) ], `' i* A
); dxf + G6 Y0 z3 ^* ?8 B3 @
# ? s) L% B% h. `" w(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 7 a! C3 |/ |" L9 G0 p: O
trimcode invent p0 p curvent linent linent2 ent2 p2)
9 t* e. q; w; [ L(setq D (getreal "\nPitch diameter: ")
1 A6 ^0 O& ?* M' A) C w% p7 U8 @) t4 iN (getint "\nNumber of teeth: ") ' h/ a8 _# f* F' ?% p
phi (getreal "\nPressure angle: ") 7 _( Z- T7 F7 G7 P3 u/ K
phi (* (/ phi 180) pi) ; Pressure angle
' A; Y: i# J% b5 B$ LDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter 4 S0 V& V8 [# v; j
RO (/ DO 2.0) ; Outside radius
V& O9 j% d; U: {! gA (/ D N) ; Addendum
3 n f* _. r+ ]B (* 1.25 A) ; Dedendum 2 ^ d/ L' ~7 l7 \5 Q9 s ?0 `
DR (- D (* B 2.0)) ; Root diameter 4 s! q9 r u' |" @* G2 Y5 ?- b
DB (* D (cos phi)) ; Base circle dia.
$ J- I) x2 d0 N- i- |1 Vinv-plst (involute DB N phi);involute points ! f' S- l9 W+ E5 V" T
trimcode nil
+ y# P. r. g9 P( I' A% n4 Y! w); setq
! |! F# n; k! _7 t. n3 B(command "ZOOM" (list 0 (- B))
( B# g7 S* r9 ?7 F4 R(list RO (/ RO 1.5))
X! {) p& m9 ^4 G; i); command : _0 H# J1 t5 o( o, K8 @
(setq invent (draw-inv inv-plst)); Draw involute. 3 k- V c) z; O! j) {
(setq p0 (car inv-plst) # `7 T. R/ s' K9 {) e8 O9 t
trimcode (ext-trim p0 DR D);trim or extend
% |3 }0 H" C* F); setq ; the involute.
" ]5 c) N& ] L1 i+ C(if (and trimcode (= trimcode 0))
% R8 P! k! k0 J: N+ z. @+ I4 _(progn ; Joins the involute to the extension. 0 s- m0 D& o2 V
(setq p (list (/ DR 2.0) 0))
: ~5 A+ {4 ?" C8 k% R" C2 h(command "PEDIT" p "Y" "J" invent "" "X") 8 ^+ y* X# S4 i$ y- ]0 F
(setq curvent (entlast))
k1 v8 n1 T: U# y6 n6 o* K) G); progn
- e) w6 M% n, W5 V# w6 O5 S(setq curvent (entlast)) & g+ e1 ^/ q1 Q2 p" C
); if
6 Y Q9 W* B! O5 o(if (null trimcode) (setq curvent invent)) 2 T5 n4 g# H& s* ` q, i* E+ Y; L
(setq linent (draw-top-line D DB N RO)); top line. # a: q$ O" ?) @/ v
(command "COPY" linent "" "0,0" "0,0") # A9 _' h9 y1 i# H9 x
(setq linent2 (entlast)) - X+ \) `; v* d
(setq ent2 (mir-it curvent linent)); mirror curve * s: C2 a) l& a- C7 m
(command "PEDIT" curvent "J" linent ent2 "" "X")
+ W& G* H7 n4 p. Y(segment DR N linent2) ; Finish the job!
6 ~) g* D2 g% W1 W6 G' P; b# i(setq p1 (list (- RO) (- RO)))
# C/ M( L$ \8 y8 }+ N8 z(setq p2 (list RO RO)) 8 \: j% ~! p, p4 ^
(command "ZOOM" p1 p2)
& r5 n4 }0 k; [. q( }(prompt "\nConverting to POLYLINE, please wait...")
; s+ c8 x6 M2 U0 E/ \(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") + w9 y% T) U5 |
(prompt "\nAll done!") $ c0 k: s7 i. Q! h
); spurgear
0 ^! y1 J5 Q2 v: \2 H# z
( x- B9 y' W7 ]' T& w/ }(defun involute (DB N phi / numer denom frac theta2max + C( a; d) D" e' X. f9 n3 h$ ^
thetamax theta-inc theta plist RB xval yval p)
! W, x2 V" r& a& j/ }# L(setq invfact 3)
4 J1 v! h9 f L; o(setq numer (+ N 2.0)
6 D; P7 U1 v/ u1 @% Cdenom (* N (cos phi))
- s3 z8 I$ C: w! O& a" E9 P% J2 V4 Vfrac (/ numer denom)
% y: t# V4 r, b; U, n8 v. m& d! e+ b1 X& dtheta2max (- (* frac frac) 1) 0 r' I! P# k! c2 ?* |, u
thetamax (sqrt theta2max) 9 C+ _7 ~2 m8 k7 b) ~) n
theta-inc (/ thetamax (float invfact))
- N c k8 }4 x7 s. {3 ~theta 0
* Y! s2 o1 L% d; d- @# K, d+ kplist nil
. {) Q. z& i$ @4 c% TRB (/ DB 2.0)
. A Z9 W" ^7 q J' R8 H); setq 0 M. L5 X6 |$ j- p* ^
(repeat (1+ invfact)
7 R! O: o% g8 A2 z9 k" J1 j(setq xval (do-x RB theta) 3 I: C# ^" V. g( @* T, s
yval (do-y RB theta)
; F8 C7 |0 T+ C" T, [3 Kp (list xval yval) , b! ^; `+ C, W6 A0 `
plist (append plist (list p))
& ~" W P* n9 R3 |); setq
* |+ x8 N' e1 S! m" ~$ ](setq theta (+ theta theta-inc))
5 s6 v$ _+ N; n); repeat
! y" _# b1 l% _ Y. Hplist $ b& B+ U, N$ s* [
); involute 1 W5 o8 T) Q7 h5 T( A( U: M+ ]2 d" }3 {
2 X2 W3 o/ V% |; t
(defun do-x (RB theta)
7 ~/ d6 k& m: \& q2 W: U) a(* RB (+ (cos theta) (* theta (sin theta)))) 4 L2 |4 B$ Z; p
); do-x
0 e, y- \) Z6 c8 v) n* i( W8 j4 U" N# G# u! P! i
(defun do-y (RB theta)
! i) ^" W) q, y(* RB (- (sin theta) (* theta (cos theta)))) * D7 Z6 P* R& m
); do-y
- [" T& Q9 n. p2 _
; V0 J, t* N" z3 C' C(defun draw-inv (inv-plst / dirpt plist p) : A- \8 a- [6 J- r/ W
(command "PLINE" (nth 0 inv-plst))
9 W! G! A9 y! z# U+ y( c/ V+ z ~(setq dirpt (polar (nth 0 inv-plst) 0 1)) ' |! r8 B8 B# `8 e
(command "A" "D" dirpt)
8 x0 Z% C2 X+ ]& l2 C/ J( {5 {(setq plist (cdr inv-plst))
, @$ K }% `4 i$ N(foreach p plist (command p)) $ m/ g) P. G, s
(command "") ' f6 i$ v1 y' C: T
(entlast) ) C0 { F+ `# g* t) Y, O& u# K7 T
); draw-inv
2 ?4 r& f4 g/ W8 f4 J7 J- a+ A- g: x* o) w o5 f6 P0 p
(defun ext-trim (p0 DR D / trimcode dist endr)
2 Z. B" C4 ^1 L" U+ w7 l2 H8 j(if (> (car p0) (/ DR 2.0)) ; Extends the involute
0 ~' A- Q: q$ i' \+ j(progn 5 Y6 {- u6 D. x$ Q- G- s! E
(command "LINE" (list (/ DR 2.0) 0) p0 "") % b# ?6 W4 H7 v8 ?5 q( ~% {
(setq trimcode 0) ( W2 F: I* Z5 b2 G8 g6 n9 u
); progn
$ _. M$ @) x8 R" p); if * ~- b; i/ g1 L# c2 Z" V' y) F
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
( j8 Y7 Z8 O1 R: J8 b(progn : W s4 E% w0 h; @( j
(command "CIRCLE" "0,0" "D" DR); Root circle
4 D" I, h7 W6 p& e' y0 N(setq dist (- (/ D 2.0) (car p0)))
( M: M# I ]3 Q3 d$ A% Q(command "ZOOM" p0 $ \+ H9 O" l9 _% V- p/ Z* [6 E
(polar p0 0.6 dist)) 3 G! g$ N0 s, G: m2 s& O1 A
(setq endr (entlast)) * C, N9 k( {" `, e# W
(command "TRIM" endr "" p0 "") : H8 d* z. c- S/ H
(command "ZOOM" "P")
5 u) r* u2 [% p/ H. k4 W(entdel endr)
; o' z$ {) U7 y) _1 K5 f(setq trimcode 1) - c' q% B! j7 T; z5 ?/ A$ R
); progn
6 k, D$ e0 { c3 s C, P9 ~: n# l); if
. N5 l: k& r/ l8 rtrimcode ) N6 o! w$ w' y8 e+ U" P) k# j
); ext-trim
3 ?3 O" G6 Q6 y# r; f
7 E$ p0 F: k9 t% p(defun draw-top-line (D DB N RO / theta-p xp yp alpha
+ c7 `5 Z) _9 Q* x4 r% X, t3 T; Kbeta tang angend inv-endpt lend)
5 F# p7 m6 i0 E3 y* Q# C(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
% w$ |* k9 k3 Kxp (do-x (/ DB 2.0) theta-p); This section ' }6 Q" u H* i
yp (do-y (/ DB 2.0) theta-p); sets up angles
2 T* h5 @) }. U4 b6 D5 o* _alpha (atan yp xp) ; for drawing a
* T7 J) h/ g% }abeta (angle (list 0 0) (last inv-plst)) / y; m3 d* e: r- x. R7 V5 h
beta (- abeta alpha) ; line across the
8 z: w) m/ I8 U$ h) qtang (/ pi N) ; top of a tooth ) Q: \6 G4 z$ J w. ^4 q
angend (- (+ alpha tang) beta)
! X/ h9 O7 H2 o1 Binv-endpt (last inv-plst); This also creates : @+ V8 u- ^' a% _9 f8 V- [2 z8 a
lend (polar (list 0 0) angend RO); the tooth
0 J' L9 o+ c' k) j. }- e' A' p); setq ; thickness.
/ B! n/ z4 h; _4 T# s4 B; b0 i(command "LINE" inv-endpt lend ""); Draws the line 9 i. z w$ C: x0 u3 B
(redraw)
4 H. w# B/ @! Q5 p0 G8 |* U: {4 B(entlast)
9 u6 M2 N2 i/ c8 l); draw-top-line % J, C6 ?( _: s4 G6 C4 w2 d
' {' u. z; [0 X; N* T0 _$ [(defun mir-it (cvent linent / pt)
- d. g3 W% T( l! a" x8 h(setq pt (dxf 11 linent))
& j1 X' y$ `5 \5 V(command "MIRROR" cvent "" "MID" pt "0,0" "") 6 s$ o8 w8 c K8 h9 o* v/ X
(entlast) . b- H5 j4 U. J! |. w
); mir-it
% K9 _( H t" b8 z! V' D& W5 M3 H3 a" `: j% O. {
(defun segment (DR N en / p1 p2 ang dist midp p0 pang
& I% ]% A0 n4 _5 lpang2 p p3 ent3 entl1 entl2 en1 en2) : t1 r3 i# L U+ ^. D4 P
(setq p1 (dxf 10 en)
: o6 l9 f# j5 wp2 (dxf 11 en)
2 K' [ c0 r# kang (angle p1 p2) ) n% K4 s) i) ]
dist (/ (distance p1 p2) 2.0) 6 O8 J% y9 F+ | Y5 p7 F
midp (polar p1 ang dist)
1 X( Z2 I- ^% n0 d/ Ap0 (list 0 0) 0 o! @- t; \3 w4 b# D
pang (angle p0 midp)
4 u& }/ B8 C4 vpang2 (/ pi N)
( N$ q: ?- q2 z( x; n$ V, \p (polar p0 pang (/ DR 2.0)) 4 N3 `# f; ~* K. n) E, W- N$ @7 M
p1 (polar p0 (- pang pang2) (/ DR 2.0)) $ i( T' q) o8 w
p2 (polar p0 (+ pang pang2) (/ DR 2.0))
- N$ w3 O% M/ x7 h$ Xp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
- V9 |7 m I2 n( d: k. Went3 (entlast); This is the tooth p-line " o- E2 U6 Q) X2 }* d
); setq - H2 ~5 U/ V% T. C
(command "ZOOM" "W" p3 p1)
+ Z" K) f" b' P0 E% v& L+ `(command "CIRCLE" "0,0" "D" DR) ;Root circle
8 t; K1 k4 `' p. a7 c. Q(command "TRIM" ent3 "" p ""); Trim the root circle 6 J7 Z) ?) z) Y( q" e2 q6 a( U% k) s
(command "ZOOM" "P")
9 _. s& v# I2 F5 S1 b5 Y(command "LINE" p0 p1 "") ' t2 U! N B2 p! ~* _& Y2 n9 f
(setq entl1 (entlast)) 3 _& f6 U3 b$ F: W5 {
(command "LINE" p0 p2 "") , G% Y2 c4 o! }5 \1 N/ b; S1 X
(setq entl2 (entlast))
2 D% J) N+ H8 H7 i" A* J a(command "TRIM" entl1 entl2 "" p3 "")
/ l- z1 z7 f6 C, L6 D(entdel entl1)
2 b: `# c# y- W: x/ ~1 ~(entdel entl2)
) V3 M- [/ i3 i T! G(entdel en) % }4 J0 b+ O$ X V# L4 p
(command "ZOOM" "W" p3 p1) 1 m: V+ w$ l O" Q
(command "PEDIT" p1 "Y" "X")
6 R1 U5 B1 B+ I) y0 A(setq en1 (entlast)) : t' L2 U1 G, ]% G, F
(command "PEDIT" p2 "Y" "X") . x5 x$ j( v, X. o1 q2 _) ]( d
(setq en2 (entlast))
- P, X) @( ^9 t5 O9 Z(command "PEDIT" en1 "J" midp en2 "" "X") 5 a8 T0 M. `8 \: A0 A! U3 }6 a
(command "ZOOM" "P") / t m8 k0 A4 T1 O1 X, p- G
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
: t$ G$ S% A2 {); segment
w6 t! c8 U" j- _, G
/ r; a5 |: Q q% ?* n(defun c:sg ()
; o0 }1 c% B& [0 m3 o(setting)
! | D- O# f$ u6 p F0 Z(spurgear) A- i) m, k# X8 E: A! E8 ^4 H
(resetting)
6 o# ^ f+ z" W; ~(princ)
5 s! u; R8 j7 _); c:sg
% _: `2 d' M, o" ]/ f& k) [3 h. b2 t0 y) s3 o: K" T
(prompt "\n**SPURGEAR.LSP Loaded!")
2 k! r2 [5 q* G' F* C7 T/ ?- {6 a9 Q(prompt "\n Enter 'SG' to start")
# p! ^1 d; ~% S7 p;;;end suprgear.lsp
/ P( z- `# m6 h打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
, y/ r& b# A" I x".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输& m* Z9 ?6 y& n3 Z
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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