有下面一段渐开线程序：, i4 g9 @& p" R* t) S+ {
;;;begain suprgear.lsp / c) k$ i! r* ^- M, E
;************************************************* & |1 K5 I7 N) r' J# J# Y( w
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
& v6 G% v. M+ t6 c W$ M( j;------------------------------------------------- 2 [* {$ m5 r; d# g
; This routine draws a spur gear using joined 7 p4 O; M$ k* g+ S. b0 Z V
; polylines. It lets you use any pressure angle
/ _5 J7 J8 O7 s' H6 G: N* k; to design the gear teeth.
* P, W& b; O( H" s7 I! I4 J;************************************************* - n% `1 P9 F( m9 j1 E
(defun err (s) + [3 m' _$ d) C. l: r
(if (= s "Function cancelled") ; L/ V0 [# l/ {& w- c1 h+ d
(princ "\nSPURGEAR - cancelled: ") % t4 Q$ q5 g3 S g
(progn (princ "\nSPURGEAR - Error: ") (princ s) ' }0 Y* d0 Z/ a
(terpri)) - n1 y: A* s- v0 f- X! |. a
); if ! _& H' g0 h8 L8 B6 n& j
(resetting) 7 T. @) r: F% i. r8 _7 }+ V6 C; V
(princ "SYSTEM VARIABLES have been reset\n") . U+ {* ~* C% N& ?4 g1 j' R& J
(princ)
$ s0 y' B: v# n; y0 w); err
o6 r$ Q$ f/ B4 n3 f
: c* T" I, ?- |5 V(defun setv (systvar newval)
1 \; q/ o ~- D# B1 `5 ]& i& c(setq x (read (strcat systvar "1")))
2 s/ E0 i1 H% |0 E7 l) [% a(set x (getvar systvar)) , b6 i* B, v+ K: ~. |; L
(setvar systvar newval)
2 g, S; n" S1 ~); setv 5 F" {5 M3 m! H) V8 u
: x4 S, J; Q$ d7 P G, ?# C4 s4 R
(defun setting ()
) F/ @. M3 Q* l4 J(setq oerr *error*)
2 f _3 h" U$ L: Q(setq *error* err)
7 d6 W P0 j. v/ d" m6 ?) g(setv "CMDECHO" 0) 6 s4 q9 |& z' ^( z ]
(setv "BLIPMODE" 0) & ^0 `) F+ { H J1 W v
); end of setting 7 A: f- q7 i. i: t6 l
(defun rsetv (systvar) ' L9 i, [0 l t9 P, P
(setq x (read (strcat systvar "1")))
A, q8 @/ e X5 `(setvar systvar (eval x))
+ ~- U; U) D7 B" G* V9 j); restv 7 ]' _: R; j& n& Z9 b( f. l
(defun resetting ()
& u4 n+ K. ^: R. X2 z$ d8 @(rsetv "CMDECHO")
( L* n& B) {1 m# j(rsetv "BLIPMODE") / i( ^( u6 H$ j
(setq *error* oerr) ) O1 k. H+ Y" W
); end of resetting
6 I: g7 H/ r# h+ N1 M) c& A' f1 b0 E n Q. {; u4 `( b+ `
(defun dxf (code ename) # Q, _$ V" E3 x7 G
(cdr (assoc code (entget ename))) 5 D! @' D7 | V( g7 \) q2 U' q
); dxf " k8 d" D: `+ U2 U0 k9 m9 a% f& B+ `
$ i% X3 z6 ~" y( k& ]* p2 K7 t4 Z9 w(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 : a7 N; [. g/ I8 E! ~) ~% @
trimcode invent p0 p curvent linent linent2 ent2 p2) : s: ~; I' ]. [' O* E3 y: X, f) V+ h
(setq D (getreal "\nPitch diameter: ")
6 k6 c7 k: t' q: o1 X2 aN (getint "\nNumber of teeth: ")
1 [' f! |+ M6 `; h+ vphi (getreal "\nPressure angle: ")
% `! r3 l! D vphi (* (/ phi 180) pi) ; Pressure angle
8 D' n; F4 X" L: Q. \/ IDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter * c _0 r2 M) m! M
RO (/ DO 2.0) ; Outside radius 8 y c. ` C, M9 Q
A (/ D N) ; Addendum 1 n8 K; v) g4 E! j- g% A3 U6 }
B (* 1.25 A) ; Dedendum - h# p0 P0 S3 R0 x
DR (- D (* B 2.0)) ; Root diameter
: E' u( @' c& B7 D, hDB (* D (cos phi)) ; Base circle dia. 3 o8 ^5 T9 a- Q: M. ^
inv-plst (involute DB N phi);involute points
! t/ b0 Z9 \+ I: ^% h* f8 Q Qtrimcode nil
4 F' h. l$ T" o8 |); setq & A0 t. [' N2 F/ C' U! x
(command "ZOOM" (list 0 (- B)) ) l6 W; O; `; D- A
(list RO (/ RO 1.5)) 6 C$ b4 s3 G; Y0 o
); command
2 q2 x# z8 I6 q3 }(setq invent (draw-inv inv-plst)); Draw involute.
/ B' c* j8 y, a3 o- a, z" a2 V(setq p0 (car inv-plst) ( _9 G1 O v0 y8 a1 \
trimcode (ext-trim p0 DR D);trim or extend
8 o& Y5 d1 C# g: R8 d# U" \+ W); setq ; the involute. - T5 ^# r. C2 p* V
(if (and trimcode (= trimcode 0)) + r ^: o* j# v3 y* A c3 {2 I
(progn ; Joins the involute to the extension.
+ ]0 a( T6 l( s }! h+ h+ Y7 a(setq p (list (/ DR 2.0) 0))
. ?' G( x6 P g7 j @$ V(command "PEDIT" p "Y" "J" invent "" "X") 5 g5 l1 s3 F' @: f2 s/ h1 [% g. R
(setq curvent (entlast)) $ q6 y) V# a l) Y4 i/ J
); progn
5 y" F O1 o' h9 ?(setq curvent (entlast))
( |5 ?6 K6 b% E" A% \); if 4 {. j- T) a, f, U7 [: I8 G
(if (null trimcode) (setq curvent invent))
- R% J% }# q- j8 {: E1 G(setq linent (draw-top-line D DB N RO)); top line. & }; L. S V7 f/ ~" ^7 s$ n) J; p
(command "COPY" linent "" "0,0" "0,0") 2 h* p! x0 W4 {% Z
(setq linent2 (entlast)) 4 C* F4 o! s3 ~5 [% Y
(setq ent2 (mir-it curvent linent)); mirror curve
: M3 D% s$ G( c" v6 l0 h# p(command "PEDIT" curvent "J" linent ent2 "" "X") & D+ t. I6 s9 Y) q/ e5 ~- y
(segment DR N linent2) ; Finish the job! 7 ^2 d8 P* ~! q4 e) y. s# U
(setq p1 (list (- RO) (- RO))) ; |8 A& g0 W3 U/ Z& P- ?
(setq p2 (list RO RO))
$ a! A- K* ~, q! h' e: }(command "ZOOM" p1 p2)
& j7 |/ ^& A0 W* J(prompt "\nConverting to POLYLINE, please wait...") 1 `! j+ J" N4 f& t+ X
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
* a) p; P% J A4 P8 r. _(prompt "\nAll done!")
G6 y! G) ?; w% {; g) m% e); spurgear
6 T: q2 h9 U: q- m9 t
6 x- |% i3 L0 A7 U! A(defun involute (DB N phi / numer denom frac theta2max ' ^: P. G, ?" H
thetamax theta-inc theta plist RB xval yval p)
4 a6 e, x4 }. j* }% Q- D _(setq invfact 3) ; g9 S$ d& n' u; m' z0 S
(setq numer (+ N 2.0)
: y: a3 k) m: A. K- r9 d+ ddenom (* N (cos phi))
& d, u: B; ~& ?* Pfrac (/ numer denom)
( ?6 \( C# V' s4 v. |7 K7 h9 v/ q6 `theta2max (- (* frac frac) 1) 4 Y* w$ |+ ~/ y' l% J( L& n
thetamax (sqrt theta2max) $ ?- }4 b- I2 e0 j% P* V
theta-inc (/ thetamax (float invfact)) 4 ~. p- B. ^" X& t0 K6 G
theta 0
4 d: X% p) Q# s" Lplist nil
% b8 I2 N( h+ U) ~RB (/ DB 2.0) ( Z& H4 |5 G: y& c ^3 X8 t/ ^/ f
); setq 1 S( |2 _3 K; t0 y( s1 W) d
(repeat (1+ invfact) ' f% y$ x9 v$ D& q! C
(setq xval (do-x RB theta)
/ ^% x4 A4 e [yval (do-y RB theta) " T5 L% ]4 c, l/ ^" x/ |7 m
p (list xval yval) # ^8 b, Q7 J9 K Y* a4 g
plist (append plist (list p)) 8 a# c2 o/ M. k! v
); setq
9 C! @6 E9 `2 Z$ ? {. M; B(setq theta (+ theta theta-inc)) , J5 J+ ~# y5 c) w
); repeat
% r, h. p0 \" V& b+ G, Xplist
0 ^' z8 e7 x4 e: c); involute
3 X: K9 M7 G+ S! s* A$ A) k/ Z5 @0 t- E. ]3 m% V, [ B
(defun do-x (RB theta) : h! v% V N: J* O/ G& J, ]! H
(* RB (+ (cos theta) (* theta (sin theta)))) 6 ]; u) Q9 s" z$ g( Z1 ^1 I4 A: f0 A( {
); do-x % J6 h6 B6 u3 y2 G' _8 U- z9 B
3 E# I: A# N$ Z P* ]3 M4 t# r
(defun do-y (RB theta) , v: e: |8 Q' k" N5 @
(* RB (- (sin theta) (* theta (cos theta)))) . Y4 V2 ~% ^5 l' i# G
); do-y
6 r: d3 b d% M8 E2 ~- g
, F$ [1 u- N5 z3 ]: ?+ `7 E$ d(defun draw-inv (inv-plst / dirpt plist p)
4 U5 F! f5 v3 R% ~6 ](command "PLINE" (nth 0 inv-plst)) 4 q$ S# S/ O" c. Y
(setq dirpt (polar (nth 0 inv-plst) 0 1)) * N- |3 ~) `( X3 L m) n
(command "A" "D" dirpt)
* a% f/ v' X) l) l2 _& k. V, T(setq plist (cdr inv-plst))
: E7 w, B2 z j% [$ R6 a5 U) B7 x(foreach p plist (command p))
& {8 E1 ~: m2 g8 B) T- G) x(command "")
! b+ i2 u5 h2 b(entlast) : ?. r7 m) Z( W* Q4 C) l( ?4 ~
); draw-inv 2 f( {' C$ T) U. H( D. o0 T, E/ b
+ Y3 x$ ^7 ]/ s(defun ext-trim (p0 DR D / trimcode dist endr)
7 L5 }' |+ u w8 v) ~$ D" v! I8 o(if (> (car p0) (/ DR 2.0)) ; Extends the involute
' L2 S7 e' x h% g! x" l(progn / t1 r# _! J T1 }+ k
(command "LINE" (list (/ DR 2.0) 0) p0 "") . m# M& \, I0 \0 @+ ]
(setq trimcode 0) / p4 `" n L, Q
); progn 5 k3 [4 W' N( b! \. W5 q/ Q( U
); if ; `: E4 [1 V6 z$ ~' j3 w* f
(if (< (car p0) (/ DR 2.0)) ; Trims the involute / o( k: r" [/ Y& o
(progn
. w5 b0 |$ p9 n- p' _(command "CIRCLE" "0,0" "D" DR); Root circle 5 F' y, r" Y9 H# ~6 E, |
(setq dist (- (/ D 2.0) (car p0)))
$ P$ M: s3 X% q4 X6 Q9 {5 w(command "ZOOM" p0
; Z$ I/ @0 G+ _: q2 k! f3 j(polar p0 0.6 dist)) 2 [8 T2 ^1 v) j3 q
(setq endr (entlast))
! X6 k' E! `9 [( B8 U) P(command "TRIM" endr "" p0 "") 2 k/ d" O* W N6 t
(command "ZOOM" "P")
8 \- {- B/ s6 f% o5 Q0 b9 W8 w(entdel endr) % e3 K# R+ P7 f* i5 }1 i& H
(setq trimcode 1)
% G' {7 S- i8 ?; V); progn 5 @$ q4 ^ [5 T3 [( b0 g U
); if + ~4 x# d8 e2 F/ w
trimcode ' z$ Q1 }0 ^: t( U
); ext-trim
' F7 F2 u; T1 M& e. e" y: j$ L9 b" P4 O' V2 [
(defun draw-top-line (D DB N RO / theta-p xp yp alpha
( _+ @! B6 I8 t9 S5 A$ E8 p# Obeta tang angend inv-endpt lend) % P* r( N! |( A6 H6 ~5 z" `9 [& ?/ X
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
- ?; `3 B8 c/ qxp (do-x (/ DB 2.0) theta-p); This section
" I, K( m$ V* ?! fyp (do-y (/ DB 2.0) theta-p); sets up angles
5 [# z- W# g% L4 R3 O) ~2 Z4 dalpha (atan yp xp) ; for drawing a ; s! A# S' C$ f5 Y* M
abeta (angle (list 0 0) (last inv-plst)) $ d) i- |6 e. V; t
beta (- abeta alpha) ; line across the
8 s) C1 D T2 i- ?tang (/ pi N) ; top of a tooth
9 V1 x& }4 z0 a9 hangend (- (+ alpha tang) beta)
3 |# n/ ?2 H) H( M; X! Q# Ainv-endpt (last inv-plst); This also creates
8 I" U+ A" X' [3 z- n' [: Klend (polar (list 0 0) angend RO); the tooth m1 O- ^% ^9 Z/ Z- a' F, w
); setq ; thickness.
; r! s% `( T) M& p(command "LINE" inv-endpt lend ""); Draws the line 0 J* I- A2 M: y" L
(redraw)
1 M$ k8 d5 T/ i- P! j2 Y(entlast)
( F& y8 j& S# q, u# q); draw-top-line
4 b) K: A$ V* O+ c9 ^( b5 V: l, B( J% s, @- G1 L& W; H
(defun mir-it (cvent linent / pt)
8 ^% Q( s! @5 q9 y(setq pt (dxf 11 linent)) ! T; f% c! i+ G: L: j( M, E
(command "MIRROR" cvent "" "MID" pt "0,0" "") , e; [/ U6 x# N
(entlast)
2 E; ]+ `- F g. P); mir-it ' ^+ y' j- p* m
% K9 s9 N" x5 \1 p(defun segment (DR N en / p1 p2 ang dist midp p0 pang
' a1 G6 ?4 _0 c% |' X7 G4 \0 Bpang2 p p3 ent3 entl1 entl2 en1 en2)
: d3 J p; a. \6 G9 F, f! X% Z% C) X(setq p1 (dxf 10 en)
3 k* F3 {3 k* G/ L ^- P$ l9 N4 Vp2 (dxf 11 en) 0 O6 B/ n" a+ ] Z/ [" j! S2 T
ang (angle p1 p2) 0 ~2 L8 e" [+ g% l& Q
dist (/ (distance p1 p2) 2.0) 1 @3 s) ]/ s' w; f9 ^4 P
midp (polar p1 ang dist) . c! \) ~# L% |
p0 (list 0 0) " K( z0 f& W6 p. v' W
pang (angle p0 midp)
1 r+ L' M6 A- ?pang2 (/ pi N)
6 \0 l d! [. V: Jp (polar p0 pang (/ DR 2.0))
2 e& ]3 z8 S" s" I( h/ ^7 j6 d6 E, \p1 (polar p0 (- pang pang2) (/ DR 2.0))
' ]" S# s& P( T& L4 L( @# wp2 (polar p0 (+ pang pang2) (/ DR 2.0))
* z G8 r9 P7 {3 pp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
- N3 j% L4 @, K6 T7 sent3 (entlast); This is the tooth p-line
+ s9 g+ z- Y; J3 E( n7 f); setq
! f) ~: A) ]) Z; t' p; s# B(command "ZOOM" "W" p3 p1)
" E& [$ N* v9 X0 _(command "CIRCLE" "0,0" "D" DR) ;Root circle
8 V/ a3 v; C% k5 l( \$ ?$ |+ ?(command "TRIM" ent3 "" p ""); Trim the root circle * C+ P2 M! h0 f% t7 s
(command "ZOOM" "P") 5 G; ]7 R2 ^' N& K7 s
(command "LINE" p0 p1 "") 2 G7 S+ Y& }+ T" u: r7 l0 p6 q+ t
(setq entl1 (entlast))
, y7 M7 T( v" ~. C9 t(command "LINE" p0 p2 "")
# W( {: b6 |) }" Q(setq entl2 (entlast)) 7 c1 Z' d/ w0 ]6 [4 p% \
(command "TRIM" entl1 entl2 "" p3 "")
' B) b0 Q! h2 z+ b: \(entdel entl1)
0 e2 \& H% |+ o* \. f3 O! }2 b(entdel entl2)
9 ~2 ]+ f$ X2 b9 f(entdel en)
. O# Q5 {; y' y$ i1 M(command "ZOOM" "W" p3 p1) : U) U$ V+ E- B- V& |1 e z
(command "PEDIT" p1 "Y" "X")
9 S$ I8 W3 A) S4 }' i(setq en1 (entlast)) 3 u% c' r8 z; h3 {) ~( `
(command "PEDIT" p2 "Y" "X") 1 o @0 S: _# t% l0 U
(setq en2 (entlast))
J! @' W+ V# ~6 U(command "PEDIT" en1 "J" midp en2 "" "X") - b6 c- b# s* u# ]' K4 R
(command "ZOOM" "P") 7 E5 i/ t( v$ K9 O. F
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
! @) s: ?3 p' s& u); segment # {1 S) C) N* a* c9 e/ F
+ E" t& U* H5 l9 D2 B* ]5 g& |(defun c:sg ()
; t7 p: V- W1 x7 I2 \; i/ P(setting) 3 n z, D& ~" `/ @
(spurgear) 7 Z$ D2 x( M1 j+ j" w$ Y5 g
(resetting) 9 ]# U* X$ k4 z
(princ)
- {$ g+ k$ G P; {" }+ @4 e% r); c:sg / w {1 [ x( n* M3 D# ~* D+ [
/ E0 W: |; m+ {# A0 f0 a0 P(prompt "\n**SPURGEAR.LSP Loaded!")
/ h# J. U0 D/ I, Q, p(prompt "\n Enter 'SG' to start") ) G! W |# L7 W' w, s
;;;end suprgear.lsp3 d; J- v8 Z: q& x$ V; L
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的9 _" l6 p% ~+ \+ G2 s" i
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
" Z7 v. K1 j' k& F3 _/ ^入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
楼主
