有下面一段渐开线程序：0 X7 `, o9 v7 D
;;;begain suprgear.lsp
1 k7 x4 S( d4 v4 W;*************************************************$ c5 O o& v7 ]9 ~7 v" @2 ]
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss9 F* d$ M8 B z' V# i6 e
;-------------------------------------------------3 `% z& a$ H7 |- s
; This routine draws a spur gear using joined
0 @! z. T; [6 S- F1 _) P- s$ q6 F. ~; polylines. It lets you use any pressure angle
2 G8 }3 J$ T! j1 F9 y D* N2 R& J; to design the gear teeth.
2 s' n4 h6 T h;*************************************************7 j. W2 P; }9 I+ T
(defun err (s)
: z1 W E. K% E8 b; K" m(if (= s "Function cancelled")
/ ~+ z* m+ k+ n2 K' l(princ "\nSPURGEAR - cancelled: "). y! f+ r8 ~1 r* {9 j% Z6 H& E
(progn (princ "\nSPURGEAR - Error: ") (princ s)
( _( O, r0 S& c/ X! \(terpri))
4 r& B5 x1 e7 B; O); if
' P6 d+ L( a2 V* p( j(resetting)
1 S% Q5 T8 `- i# C) M" R8 d- a H) P(princ "SYSTEM VARIABLES have been reset\n"), L& A- O2 t# f( D' S7 Z
(princ)
7 o* c1 c) O5 w3 c- K); err
" J+ S o9 v& x% M5 G$ x+ R, U, W
7 o% q- _$ R" c! U, `8 V7 B(defun setv (systvar newval)0 ~3 S/ ~' t! i* G$ l
(setq x (read (strcat systvar "1")))/ J8 p' {+ \- \$ C1 t" H
(set x (getvar systvar))
4 u Q; a" P( r3 z$ Y) e: u' D(setvar systvar newval)
. }5 L: E8 U2 C0 K); setv* G7 M* g v' l9 e4 f, m4 U1 e
9 p) ^% N8 w5 C& C$ {, ?
(defun setting ()
. m0 l8 v3 I" Q! ^- S8 I(setq oerr *error*)% C3 ]8 Y+ c* N! y# S
(setq *error* err)5 x. g8 C; D" Z
(setv "CMDECHO" 0)- a/ G) j5 y# E% B
(setv "BLIPMODE" 0)4 q! j4 D% G2 \# [7 D
); end of setting
: P* t+ h7 `" q# F(defun rsetv (systvar)
& R0 y" O7 V/ @& @) O7 }/ h(setq x (read (strcat systvar "1")))' ?- J3 q8 ^+ z) K Y+ |
(setvar systvar (eval x))
5 f, \* z, k5 E# s7 v); restv
2 X2 V1 ], S* ^7 L2 B7 S: A% D/ [(defun resetting ()
l- y2 U7 }/ p. |(rsetv "CMDECHO")- h- H; d4 x8 L. ^- _
(rsetv "BLIPMODE")9 O8 _2 e& u* Z3 g# _
(setq *error* oerr)7 b b/ w: F; z
); end of resetting- v) P2 q [' V+ i! }, Y/ j
! J: y, r p0 V4 j1 p. P8 r! R
(defun dxf (code ename)
( n9 K2 A: E0 ?+ K(cdr (assoc code (entget ename)))
8 l% F5 F/ Z0 o6 P); dxf
' P' r( `. W/ K4 Q0 |# [: C# S5 J, }0 O8 ]) t% U
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
7 T: W4 a* w$ B- g6 g5 |: ~1 |( u- ctrimcode invent p0 p curvent linent linent2 ent2 p2)0 B j; U: R# w# n% M1 B& n% p2 ?
(setq D (getreal "\nPitch diameter: ")
# |, w& w: r4 \% ?" d# }" G& yN (getint "\nNumber of teeth: ")2 r0 q2 V2 q4 [* ?! I
phi (getreal "\nPressure angle: ")% b: d# M% a6 |/ ~! b4 D
phi (* (/ phi 180) pi) ; Pressure angleG; D! \; e( f& U# p9 Q2 V
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
. G% b* m' k" Q4 b% T# K7 ~! ~" JRO (/ DO 2.0) ; Outside radius. ^) D3 L j! b; }
A (/ D N) ; Addendum
* [! `2 o; i5 ^/ w9 b# @- qB (* 1.25 A) ; Dedendum6 R5 ~% m7 D5 N# r: T; F
DR (- D (* B 2.0)) ; Root diametera6 g, c- d% |* Y, M
DB (* D (cos phi)) ; Base circle dia.' S- b/ P$ g3 }! L$ ~& h
inv-plst (involute DB N phi);involute points
* l# q- ~4 r! A$ Ytrimcode nil
0 F! F4 f! Q- X! C); setq
% O# {+ x( R8 H. O(command "ZOOM" (list 0 (- B))
9 e/ D- m) b/ O( c(list RO (/ RO 1.5))( u% W) O" h# I# O0 x
); command
) }" ~/ [: }7 I8 Q(setq invent (draw-inv inv-plst)); Draw involute.
- }$ G! s6 r D# F3 }. O(setq p0 (car inv-plst)/ Q( V5 T6 }. [/ u: ?/ y
trimcode (ext-trim p0 DR D);trim or extend
4 C2 {, F7 s4 w$ `7 t); setq ; the involute.; \ L! C* L5 Y" w
(if (and trimcode (= trimcode 0))1 J2 m' \; B: ^
(progn ; Joins the involute to the extension.
, N8 P+ ]( a- _0 b(setq p (list (/ DR 2.0) 0))
9 \0 T ?" o. s" D+ U0 n- ]6 h(command "PEDIT" p "Y" "J" invent "" "X")
1 d% T J: |* S T8 K: A5 }2 m j(setq curvent (entlast))# A2 k% c v- \/ v% t7 h
); progn
0 O% N$ T& O( @4 V- P) d3 P(setq curvent (entlast))
" X0 O5 r( Q$ o8 m1 w# r: O* r); if
. o; `, h0 B' H8 [ T X(if (null trimcode) (setq curvent invent))
4 N* l+ a- l& f5 _(setq linent (draw-top-line D DB N RO)); top line.
1 E0 @5 S8 m: g+ c8 b+ t( O(command "COPY" linent "" "0,0" "0,0")6 I) ] g( A+ \) ~* O$ }# [
(setq linent2 (entlast))
9 @3 X! B8 V& {1 \3 X' Y: z(setq ent2 (mir-it curvent linent)); mirror curve
& ~+ G- p* x+ t' L" _- Y) F& Y(command "PEDIT" curvent "J" linent ent2 "" "X")8 [" s7 h; k1 ~: g; U* g0 {% e+ a' b8 {
(segment DR N linent2) ; Finish the job!$ L N) A- p7 G# b
(setq p1 (list (- RO) (- RO)))
" w. @ y3 D# M5 B(setq p2 (list RO RO))
) x6 V$ [0 G- y. z: R0 p' G7 }(command "ZOOM" p1 p2)! H/ l) x, c4 A; y
(prompt "\nConverting to POLYLINE, please wait...")* o9 t4 v3 k: l0 g
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
- n# s/ [7 f. l4 c# M; ^+ @(prompt "\nAll done!")2 i# d9 U# V. X' j: N5 q
); spurgear
z9 D. h( D% Q, t+ K
8 V6 P3 u; q Y3 U% @1 \(defun involute (DB N phi / numer denom frac theta2max
. n5 o" x7 x- M* L; w( s; l, P+ X+ xthetamax theta-inc theta plist RB xval yval p)& V, \( T& O# o% b2 C* {
(setq invfact 3)
& P7 R* r; s& l2 s# U6 C! Q2 i(setq numer (+ N 2.0). C; u; ~: \" F- N* l. @, ~
denom (* N (cos phi)): ?. Y% X# L8 h( y& Y
frac (/ numer denom)# v5 y( d) m9 v) o8 X( s5 t# {
theta2max (- (* frac frac) 1)% |. s9 G+ t- m" p7 R+ ^; p3 O
thetamax (sqrt theta2max)
$ R" b% a0 n1 y( Ptheta-inc (/ thetamax (float invfact))
7 R1 T! w. d$ l! h& x- {8 jtheta 0
/ e+ c- f- H# k8 F* u0 O' c9 cplist nil7 G$ B' u. q" N7 w4 ], _; [+ P5 U
RB (/ DB 2.0)* ^, H/ n; U6 O" u# _' ~
); setq
8 \2 K# u8 d$ I+ P# q& R" L# V(repeat (1+ invfact)
4 y6 \6 C& g: j(setq xval (do-x RB theta)/ G1 `$ T5 m2 p; s/ S" A/ }1 q
yval (do-y RB theta)- c- A4 @& V0 k1 G; [( {" ?( p
p (list xval yval)7 }+ r1 f7 c8 _- d3 [. S
plist (append plist (list p))
. A4 |. z2 D6 o- m% k6 x! d# x/ d); setq
4 m& R+ x+ W+ ^4 ~! e, h(setq theta (+ theta theta-inc))
* J2 r1 Y% H- Y- j- a% s); repeat
2 w0 M& E' X# W' a5 m3 P( M; f" K/ fplist
$ b m& L1 Y O* J8 C- Z); involute- d( o" z/ R- x6 y6 z8 |, e
% U. C, M8 ^3 }(defun do-x (RB theta)# m3 r. {% Y# j' m# W3 T
(* RB (+ (cos theta) (* theta (sin theta))))
; c: J* N2 h; Y4 s9 n3 T& I' h! H); do-x
1 J3 w8 q0 D9 ~+ D9 G+ }2 p$ m# J z. F1 \0 C
(defun do-y (RB theta)H; z2 m D- T# N- I8 i
(* RB (- (sin theta) (* theta (cos theta))))" h4 _$ S3 }; d: t1 C" V
); do-y
2 V' U5 [! X8 b% S" K
/ x! w [8 T% E+ t5 r" o/ T+ T/ K2 F2 B(defun draw-inv (inv-plst / dirpt plist p)
! P2 T, D8 b: }(command "PLINE" (nth 0 inv-plst))
% L' y ?: a( o(setq dirpt (polar (nth 0 inv-plst) 0 1))7 n6 _6 U3 k, i7 ~
(command "A" "D" dirpt)
! K" w4 s" w% H; n3 f4 G' N8 Z(setq plist (cdr inv-plst))
7 H) l1 c- J( w(foreach p plist (command p))
r# ^5 u1 d1 n8 p& k(command "")
0 x/ F1 f! U% O( k5 G% l(entlast); ^/ Y0 D0 x2 Y4 X2 B
); draw-inv& k' u# p" E5 t8 ?' r7 n
/ K/ n1 \# _% _: ^/ ~ t) o(defun ext-trim (p0 DR D / trimcode dist endr)
, |7 |( Q9 Y G& J7 U(if (> (car p0) (/ DR 2.0)) ; Extends the involute
& Y$ C( D# j1 \5 P" H* [(progn/ R1 Z% F/ x* S7 B0 {$ f. ]: {
(command "LINE" (list (/ DR 2.0) 0) p0 "")L9 k4 r# ]. }7 y( @0 Y" d0 S0 E/ r4 B
(setq trimcode 0)- |( @! w3 K1 V: q8 q/ Q" @; Y
); progn
! X1 P& R4 f8 |. x7 |); if
9 T" V$ z1 k9 G1 B# m(if (< (car p0) (/ DR 2.0)) ; Trims the involute# r5 }, |7 W% D6 N
(progn
9 {1 M& L$ C x9 b% A(command "CIRCLE" "0,0" "D" DR); Root circle0 N' H8 f9 L* P1 N) W: j4 Y
(setq dist (- (/ D 2.0) (car p0)))
5 A2 f, [& C% p% v(command "ZOOM" p0A3 {' o. K. I' {7 h4 k
(polar p0 0.6 dist))
$ l; }+ w; T0 c% |/ Z1 `(setq endr (entlast))3 I; s: M# L8 l
(command "TRIM" endr "" p0 "")
& k* E i' X# i7 g3 V(command "ZOOM" "P")
+ G& U8 @8 a4 g. `(entdel endr)6 I' t `7 d* M
(setq trimcode 1)- w3 P0 ~% u2 O% c. [ p- l+ E1 h7 A5 m
); progn
8 @4 x8 N0 F+ P% M); if4 j" b7 p- x- ~3 X3 ?
trimcode
) [* Z1 ? T0 I' w( U); ext-trim+ {' q6 T* [" A- c. G
* C$ I, v+ ^* ?% ~; H+ n/ j
(defun draw-top-line (D DB N RO / theta-p xp yp alpha; s* H+ Y3 Y# d
beta tang angend inv-endpt lend)
- G7 H& D% ^% }8 B5 j(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
, W% g0 l; J9 U" @xp (do-x (/ DB 2.0) theta-p); This section3 H7 e6 `9 x2 v/ p8 b2 p) p
yp (do-y (/ DB 2.0) theta-p); sets up angles
, \2 ]) ]! r6 x) galpha (atan yp xp) ; for drawing a; ^6 p3 L, Z8 @" Q3 ^) n- a% K
abeta (angle (list 0 0) (last inv-plst))
1 D! i! e- D% V1 c3 X/ a! g& _beta (- abeta alpha) ; line across the
$ [, u' |3 t- R' Gtang (/ pi N) ; top of a tooth
' F _! }5 D- M6 H3 l8 N' }angend (- (+ alpha tang) beta)
6 ~; X2 k- C' u& F u) R3 s' Sinv-endpt (last inv-plst); This also creates
8 _7 j- {! G- [1 z) i dlend (polar (list 0 0) angend RO); the tooth
6 t' t( V9 O2 I$ u); setq ; thickness.5 q5 S/ v8 J, g
(command "LINE" inv-endpt lend ""); Draws the line
( {8 c, T7 t% p1 a- c! c! B(redraw)
) }% ?. M# `: _6 F6 e2 L* q: i(entlast)
3 O4 G& R+ Z" \6 I); draw-top-line
+ y. `) \- f1 K
5 |+ X5 |" d6 E& `/ [(defun mir-it (cvent linent / pt)0 [ ]4 v& I2 s
(setq pt (dxf 11 linent))6 a+ L2 S( F( l6 C1 ~
(command "MIRROR" cvent "" "MID" pt "0,0" ""). \+ R7 l5 l9 j6 F
(entlast)3 }( Y/ E9 @# q3 ?5 G/ r9 f
); mir-it! y. t) e j8 E" [9 A
e- n, n6 h- O(defun segment (DR N en / p1 p2 ang dist midp p0 pang0 m; Y0 J6 j# B& W9 {" Y
pang2 p p3 ent3 entl1 entl2 en1 en2)/ Z& H7 p) A# e& _: q
(setq p1 (dxf 10 en)
7 @: Y6 @7 u* ]p2 (dxf 11 en). ~0 Y9 F; ~' d2 T& U1 n7 S
ang (angle p1 p2)
5 ]7 z5 r0 F$ ^, ?$ B5 adist (/ (distance p1 p2) 2.0)
7 ?& Q5 m$ s& b C% t! d: Rmidp (polar p1 ang dist)2 J, @: M% r7 { _3 G3 r' |5 \
p0 (list 0 0)
0 W5 E( h$ w; @# A% Ypang (angle p0 midp)
# ]) S7 A9 A% n5 ?pang2 (/ pi N)
! N6 {8 ~/ }7 {" M$ Ip (polar p0 pang (/ DR 2.0))
+ H; c. V/ p) J$ X8 Jp1 (polar p0 (- pang pang2) (/ DR 2.0))
# c. P) {" k [/ d: E9 c! Lp2 (polar p0 (+ pang pang2) (/ DR 2.0))" U3 G5 ^7 Y4 w' A4 e/ T
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
2 Z) @9 I" o. M% g' @4 Cent3 (entlast); This is the tooth p-line& X+ c! l& m; x F0 Q- l* [
); setq- j7 B. {, Q# [) a; j& X; Q) q
(command "ZOOM" "W" p3 p1)
" A: B. w/ s8 M2 t0 `2 d& E(command "CIRCLE" "0,0" "D" DR) ;Root circle
6 _: s2 R* W8 b(command "TRIM" ent3 "" p ""); Trim the root circle
5 Q. k2 }/ x# `(command "ZOOM" "P")
7 B3 i* r: Y& }6 m+ b8 d2 `9 a+ G' Y(command "LINE" p0 p1 "")
% y; N$ Q8 ?& N( K$ e8 }9 _7 Y; T4 \(setq entl1 (entlast))* H1 _: L4 A! M+ j2 m% O2 b
(command "LINE" p0 p2 "")
5 {) L5 l; _( |2 Q9 M+ s. E" U( W(setq entl2 (entlast))
7 r( ]* X7 w* [3 B& }(command "TRIM" entl1 entl2 "" p3 "")
; K% {' K' v1 l8 g7 h2 M(entdel entl1)
' q; G' `# N, d2 A$ P(entdel entl2)
% G" o( B s0 L# {3 S) k(entdel en)
& q2 [6 t# {. W4 s$ {(command "ZOOM" "W" p3 p1): c( \! _3 O; Y7 M' R
(command "PEDIT" p1 "Y" "X")* F4 D# H: g; g
(setq en1 (entlast)): {& x4 X S" W3 H, Y* D
(command "PEDIT" p2 "Y" "X")6 o. R3 I5 t L5 d
(setq en2 (entlast))" ~# c7 C# z4 G3 M! Y, V# j
(command "PEDIT" en1 "J" midp en2 "" "X")
7 A4 ~( l4 t9 m: r+ i0 F$ b(command "ZOOM" "P")|9 k3 n$ ^" [4 h# K
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")$ C5 Q- I/ |% L% D6 U( ]/ r/ X
); segment
' }. I9 K% X( {0 ~) M9 V4 D2 i6 L9 z" S# m# t/ F i' V
(defun c:sg ()7 L* i B0 u/ n9 C, `8 p5 `
(setting)- _! ]# ^4 Y- Y; Y
(spurgear)$ Z, w }5 v1 V% A: B, E# Q0 R
(resetting)$ n, e, r+ O1 z
(princ)o0 {& w2 n8 b, o3 a4 O) z
); c:sg3 W2 s% V. v5 A1 m k
; G P% ]7 U3 ^: D. a' e) g(prompt "\n**SPURGEAR.LSP Loaded!")
: |+ k: L9 L, E# Y5 c0 d(prompt "\n Enter 'SG' to start")
& }7 ~( W- i" y2 z+ c4 o;;;end suprgear.lsp9 d5 T6 G! S* U& {8 a
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
% F; k# p. G5 f6 `".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输- |$ i) z5 [* O, ^) C9 J0 w
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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