有下面一段渐开线程序：9 R! u1 z; s# E- e6 N, `) O
;;;begain suprgear.lsp / A6 V; c6 O$ t. E
;*************************************************
, a" a1 J& n; f' @;SPURGEAR.LSP - a lisp program by Tony Hotchkiss " L- R4 ^; \/ B" v
;-------------------------------------------------
8 ?. @" t: Q- g. _; This routine draws a spur gear using joined
" T) S( d' N" a. c: O; polylines. It lets you use any pressure angle ) g t! z# O' u! y
; to design the gear teeth. 3 B# W Q: {6 ?% I' d" s
;************************************************* / N. Z0 g. b4 }
(defun err (s) 3 q+ Y3 f+ }6 `" m9 s0 A: y6 _
(if (= s "Function cancelled")
# ~" ^0 l: o; h4 i(princ "\nSPURGEAR - cancelled: ")
+ r7 c$ ` P+ r/ f; z+ f(progn (princ "\nSPURGEAR - Error: ") (princ s)
9 ]# o4 p3 j$ b% \8 m(terpri))
, m! ]! \+ Z/ V4 d2 Q2 L); if , n7 o& P) ~0 @) C9 K+ h
(resetting) , \, H) H/ Y3 x0 d% Q+ `% c
(princ "SYSTEM VARIABLES have been reset\n")
: H1 \) r) W* T* Y/ g(princ) " ^2 y- W9 e2 d$ H N8 ~8 J
); err
: ^0 C: e# z% `- |& p, E& E7 q
(defun setv (systvar newval) , e4 R: Z* p! L+ j0 B. z H0 }8 ~
(setq x (read (strcat systvar "1"))) ' U/ r* x5 D7 h. K
(set x (getvar systvar)) ! k4 r) \3 g6 T$ E( `
(setvar systvar newval)
% v& o# `! z) z7 M5 C( [* y, \); setv 2 d* i X# ^9 c/ V1 A& l: w
9 y9 M: `' g/ Q- {& y L( a3 P(defun setting () , f/ w a9 M+ F# R4 y
(setq oerr *error*) ' P8 { W* [3 J) W3 k8 m! Q& n6 b% v: T
(setq *error* err) 5 g6 z% |5 V r) Z( w( A" I
(setv "CMDECHO" 0) ' N- e% F, b( Q3 m* G4 y; m# _/ @
(setv "BLIPMODE" 0)
; `! s' j4 V0 C$ V0 I: k* b$ h); end of setting / k7 [3 m9 U8 W( v% [9 @
(defun rsetv (systvar) : Y* s4 {5 r1 r4 L* h; ^ [
(setq x (read (strcat systvar "1")))
$ N5 t6 h# f0 A& x' t% A7 _ T8 n! m(setvar systvar (eval x))
( E& [& R* l( q) Z) c); restv 4 W, I" n( R3 h6 K0 Q
(defun resetting () 2 D. q; H5 k$ [) M; W
(rsetv "CMDECHO") 1 @7 c- |0 _ r9 y3 \7 C G: I' r
(rsetv "BLIPMODE")
4 J2 _# B4 O! K" c# A R# H2 @6 @, d(setq *error* oerr)
% ~# V3 Q' A- h( A); end of resetting
' Z2 S' d1 o4 A5 C/ e; y( o: Q. l# W5 r& g* d5 L# H
(defun dxf (code ename) 9 _8 c5 z7 c: t9 |
(cdr (assoc code (entget ename))) 7 j+ n* a) Z$ }7 S
); dxf , F L; l+ m( I& h* t
# T( D7 A7 J3 H) y
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
3 I) @* V* y* b" T. Etrimcode invent p0 p curvent linent linent2 ent2 p2)
6 @& q0 ~+ _) Z& V1 ^* O(setq D (getreal "\nPitch diameter: ")
u1 L4 o9 _. S% }+ PN (getint "\nNumber of teeth: ")
& j9 y3 |0 X9 S. _phi (getreal "\nPressure angle: ")
9 e% v6 O3 b4 J, s& F5 [phi (* (/ phi 180) pi) ; Pressure angle
( I5 j! R8 I- M9 uDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
, |( }8 W/ S% Z* `; z3 M; iRO (/ DO 2.0) ; Outside radius
$ a* b+ X: }+ Y: |A (/ D N) ; Addendum
8 i8 l' S W2 }. z ^! @( LB (* 1.25 A) ; Dedendum
9 [) q5 e4 k6 hDR (- D (* B 2.0)) ; Root diameter 0 r8 {( @2 Q3 M7 s/ R
DB (* D (cos phi)) ; Base circle dia.
9 F: {' C2 l1 X/ Dinv-plst (involute DB N phi);involute points
' ]5 I8 [' Y8 w) ?' Ftrimcode nil
/ J" {5 ]2 Y2 E3 h( \$ S); setq 1 d2 _( l: m4 O. T7 b
(command "ZOOM" (list 0 (- B)) + o6 ]* p. O5 @) S" c. x1 t
(list RO (/ RO 1.5))
6 G, [$ F( b' C1 o); command
5 ~& E& k/ `) v! I% Y' |(setq invent (draw-inv inv-plst)); Draw involute. 4 [0 r- e0 E# N b) U
(setq p0 (car inv-plst)
# k6 f$ k+ E5 d7 k- Jtrimcode (ext-trim p0 DR D);trim or extend 4 o9 r/ f3 J& T0 Y) q
); setq ; the involute. 4 S8 v4 v5 f8 x: T7 E
(if (and trimcode (= trimcode 0))
0 U0 x# h2 v, c# [(progn ; Joins the involute to the extension. 3 w% L7 X [! b! \
(setq p (list (/ DR 2.0) 0))
5 m! g, x) U% t(command "PEDIT" p "Y" "J" invent "" "X") ; P3 `5 x D$ K
(setq curvent (entlast))
u6 x/ Z3 l# b); progn 3 }7 E6 a6 L% c7 A* N
(setq curvent (entlast))
4 {# `" A Q1 r, I% Y8 _); if 2 s- s$ u2 Y( Y7 I
(if (null trimcode) (setq curvent invent))
, f w- L" W6 C( s5 ~+ m(setq linent (draw-top-line D DB N RO)); top line.
" Q# J" f+ [# q7 x0 T' H, E(command "COPY" linent "" "0,0" "0,0")
% h+ {( G$ C) b6 E(setq linent2 (entlast))
' M, |: I* p& ?0 D/ v+ W(setq ent2 (mir-it curvent linent)); mirror curve
1 p6 d5 I- w$ k' `# j( g(command "PEDIT" curvent "J" linent ent2 "" "X")
% `9 z- ^ Y) j5 }9 k! \(segment DR N linent2) ; Finish the job!
- E$ K6 h- r% K! g! [(setq p1 (list (- RO) (- RO))) % E; H' y: j, f; l
(setq p2 (list RO RO)) 0 N( Z& H$ Z+ K# ^6 J! H
(command "ZOOM" p1 p2) ( f5 h1 J% t0 Y
(prompt "\nConverting to POLYLINE, please wait...") 2 y8 t' Z0 D$ `# Z4 t( R
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
$ _+ @' u! I* [# G: L" e0 S(prompt "\nAll done!") 7 l' U @3 d- t5 q9 x) e% F1 x
); spurgear
1 @( P" P: x$ E7 A
8 [ C3 C9 a7 Q" L7 w(defun involute (DB N phi / numer denom frac theta2max
) [" ~8 t2 ? q. B$ j I( I1 s5 [thetamax theta-inc theta plist RB xval yval p)
5 a/ t D( B6 b! d( ?: z(setq invfact 3)
7 T" v7 G& C1 z( ]8 c- ?" |9 W; W(setq numer (+ N 2.0) $ j* l( y6 w9 x7 z! |9 M/ l0 N0 Y
denom (* N (cos phi))
. R7 m9 p) W- D, y: ^8 ]5 b3 tfrac (/ numer denom)
+ l' f* E. R! x' T2 ftheta2max (- (* frac frac) 1)
# [7 I+ H ~$ ^thetamax (sqrt theta2max) * X4 r+ G; K$ B0 o$ [! P
theta-inc (/ thetamax (float invfact)) 2 l/ U6 U% A& s1 K# B, H! e; _# C1 L- M
theta 0 , G3 ?9 g( `. j, w9 h
plist nil # i3 ~" H7 E% s1 _% m7 B7 v
RB (/ DB 2.0)
4 L) X( F: F& R$ B: E' W); setq * Z* l+ Q v3 f% ?: v' ^
(repeat (1+ invfact)
2 y/ Q( M; f3 `: x8 S; V% w(setq xval (do-x RB theta)
6 H7 q& f! x4 \; P: m' h* ^+ qyval (do-y RB theta)
8 Y& u$ C! G8 xp (list xval yval)
" u% V# P% `6 L. q4 Hplist (append plist (list p)) : c$ O s. V" D4 a" M, U" D
); setq
& ~8 T" Y6 T1 h$ ^* B u# v(setq theta (+ theta theta-inc))
+ L+ B% x' \! z0 k5 F* ~); repeat
5 z! V' P P# ^# Y) K1 |' {9 fplist ; }9 R/ g% L; s8 S
); involute " W, c# K4 A! r+ `
$ W/ H- I! h" @" @! ^' D1 j(defun do-x (RB theta) 2 D4 i; u& ?7 a+ m- I3 P3 I5 ]
(* RB (+ (cos theta) (* theta (sin theta))))
& [# m# D$ B4 a7 h4 U3 ~; d); do-x E2 H3 b* {% g4 B7 _( u2 [: f* C
t0 X5 L/ t& R. B0 V
(defun do-y (RB theta) : D v. p; n' |. k
(* RB (- (sin theta) (* theta (cos theta)))) ; k' D$ |* t+ j7 l
); do-y 8 S" U t5 J& @; o& E
9 `1 q1 T( j) u(defun draw-inv (inv-plst / dirpt plist p)
) N& J; x- H6 y+ Z(command "PLINE" (nth 0 inv-plst))
, ]8 A; \& @7 q- e/ e' W(setq dirpt (polar (nth 0 inv-plst) 0 1)) / s/ u/ t. R; h+ L& N3 r
(command "A" "D" dirpt)
2 \$ Z% W4 k& \0 x; J+ ?(setq plist (cdr inv-plst))
- [* {7 y' i' _6 m& `" X(foreach p plist (command p)) : S7 z! [& b( F- C! H; o, E
(command "")
/ p; Y& V2 `- D( \$ P7 y( y( M(entlast) ( x' ~0 ?7 H3 q; V O
); draw-inv 0 Q4 S7 p$ t; H5 O8 f" d
+ ?5 r, ^: m! c) L+ X v(defun ext-trim (p0 DR D / trimcode dist endr)
; @ e# B4 y8 c9 I7 r! H(if (> (car p0) (/ DR 2.0)) ; Extends the involute
" [" J, ?" Y7 e$ M, d" l' z, g' @. x(progn * D- t$ p H0 Z: V; L; H
(command "LINE" (list (/ DR 2.0) 0) p0 "") 9 k- ^5 v# E- z. i7 V1 I2 {
(setq trimcode 0) 8 s+ u7 V* @2 N( L/ d( _, d: b3 e1 |
); progn Z( _1 W* s2 H x/ n# z
); if
6 s* n" t& R5 D1 W(if (< (car p0) (/ DR 2.0)) ; Trims the involute , n2 l7 |+ `- _# \+ [& Y% I
(progn
. U# P1 ` M2 R4 N' m4 U(command "CIRCLE" "0,0" "D" DR); Root circle
5 b' e a: L9 i7 d8 u% ^1 j# X(setq dist (- (/ D 2.0) (car p0)))
( E$ e9 q& f$ `6 s2 o$ J(command "ZOOM" p0 2 _9 b+ }% |# I+ }5 G
(polar p0 0.6 dist))
* Z% |3 m* p0 i: w H7 S. T- {(setq endr (entlast)) ' p( G9 h% P4 j4 v+ V, W
(command "TRIM" endr "" p0 "") ) f& y5 f' X2 q6 r \% J
(command "ZOOM" "P") 0 U) C. b" g+ } G: x) O
(entdel endr) $ c/ f1 m. C+ q; X( M# G
(setq trimcode 1)
0 `7 `! R/ D' O" p9 n); progn ( o2 i$ y0 ]& V( t& o
); if
- g1 G$ Q, Z) n0 J) X/ dtrimcode
8 n+ ~, c& i8 R1 w: ]' @); ext-trim 5 O u4 E! l: E: }2 g8 j
6 s. z6 J+ F1 e
(defun draw-top-line (D DB N RO / theta-p xp yp alpha
9 l! J9 R1 V( tbeta tang angend inv-endpt lend)
4 U% K) d6 P- l(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) - Q. ~- m9 ^4 U( Q4 V
xp (do-x (/ DB 2.0) theta-p); This section
( z: e% t7 q c4 ?yp (do-y (/ DB 2.0) theta-p); sets up angles
E9 Y8 ^5 }8 _8 P/ nalpha (atan yp xp) ; for drawing a ; e4 L1 S6 G: E/ \% p3 R
abeta (angle (list 0 0) (last inv-plst)) * Y8 {( @; \! s, j s M6 c
beta (- abeta alpha) ; line across the : g7 ^& X K: m. R7 {" v& e2 M. s
tang (/ pi N) ; top of a tooth 7 @& q) m9 r& A9 r1 b6 o( Z
angend (- (+ alpha tang) beta)
9 e. G* @) C( V; g! H) I& Vinv-endpt (last inv-plst); This also creates
. O# Q! W$ T" U- m' F; x" Nlend (polar (list 0 0) angend RO); the tooth * N* Y/ W$ N. M6 T. P, O6 {' k! v
); setq ; thickness. . X: k; Y* g. {7 @; G
(command "LINE" inv-endpt lend ""); Draws the line
1 ~& c+ r/ q& s7 k# Y(redraw)
6 U" y& _4 \8 E; {7 T(entlast)
t9 y9 r+ G; o: o5 O5 E: |); draw-top-line 6 {+ J! ]7 m5 c. p( r5 j2 W/ a
- J: B g, U1 x6 l(defun mir-it (cvent linent / pt)
0 M* S+ c8 l \, k7 d(setq pt (dxf 11 linent)) 5 ~) e9 U$ ~' w' D
(command "MIRROR" cvent "" "MID" pt "0,0" "")
: J; }5 a" \" G(entlast) # W7 [4 W: s i! [; j8 s3 A
); mir-it # j( G' ^3 M' }0 e; m
9 y9 w2 Q, n5 M6 g) M- _) H(defun segment (DR N en / p1 p2 ang dist midp p0 pang 1 {) v$ p" J: |
pang2 p p3 ent3 entl1 entl2 en1 en2) 3 ]: }; m, T. e; w9 v
(setq p1 (dxf 10 en)
( }. M' m8 _7 R1 x! S/ ~p2 (dxf 11 en) 4 d+ z2 O* d( Y
ang (angle p1 p2) " A* s: x6 Y( l) m
dist (/ (distance p1 p2) 2.0)
' q9 {* s) c7 j: F! amidp (polar p1 ang dist)
, n: d9 E. H, l$ \ r8 Fp0 (list 0 0)
- p: b! V& ^1 M) c; W4 k' O2 b! R% epang (angle p0 midp)
2 w* I5 N" @8 y, j( r% Kpang2 (/ pi N) ' M) j4 @& W: s' S
p (polar p0 pang (/ DR 2.0)) ) `* D s; N9 o7 s: g
p1 (polar p0 (- pang pang2) (/ DR 2.0)) ! i( E/ ^, z1 C1 E2 p6 a
p2 (polar p0 (+ pang pang2) (/ DR 2.0))
5 t, e4 b+ T6 A9 lp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
' U; o5 s' t0 I+ ^ent3 (entlast); This is the tooth p-line & F4 q& ~% M3 p- L. C) o
); setq , h, i: F0 [2 H
(command "ZOOM" "W" p3 p1)
! W7 ]: a7 j& g& d6 O. Q, o# K* Z# s(command "CIRCLE" "0,0" "D" DR) ;Root circle ( A0 U5 w J% V- C8 S, M* t2 c
(command "TRIM" ent3 "" p ""); Trim the root circle
; r6 N9 B/ e, x/ o. Y(command "ZOOM" "P")
: |# Q$ C) r2 C% f(command "LINE" p0 p1 "")
- v" A1 F$ j, c! u) X3 y' [(setq entl1 (entlast))
5 |- g9 W: q2 S: t(command "LINE" p0 p2 "")
& |% I; |0 J( A% }4 C: r(setq entl2 (entlast)) & Z7 b9 M* [& D' b
(command "TRIM" entl1 entl2 "" p3 "")
* g8 ?/ w( [0 }+ \8 @2 Z(entdel entl1) % m' i+ I2 u$ {. M7 F
(entdel entl2) 0 y4 v. i8 G( |* g8 L) J
(entdel en)
8 y0 e0 Q$ W8 r/ N(command "ZOOM" "W" p3 p1) + \. h+ E# g6 _$ V. Q9 Z
(command "PEDIT" p1 "Y" "X") + I4 w9 J; r' G& }
(setq en1 (entlast))
" W' |2 B2 v- |- X. I- X9 |' r% o(command "PEDIT" p2 "Y" "X") % j3 k7 T9 P- W& N' K
(setq en2 (entlast))
V. g2 X; o: E$ X(command "PEDIT" en1 "J" midp en2 "" "X")
\5 k6 T. y+ V4 a- k(command "ZOOM" "P") , Z: c6 V- l- y+ F% H
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
' e) Z: M7 X: t' Y4 S+ m8 k& h); segment n7 R' Y( g% V1 f0 O7 ] Z
0 \' R$ {3 x3 _* ~& t
(defun c:sg () 3 O g4 z8 U B: ^2 r4 ]
(setting) 7 B! C- u7 B' O6 i% ^
(spurgear) $ w8 F0 a0 R7 N; e7 U
(resetting)
1 g+ b s& F& b8 f(princ)
* X) ?% \4 b0 B, r5 V2 j8 b); c:sg
, f" i; P; T$ ?& c& Y& ]1 ^/ Q: B0 k
(prompt "\n**SPURGEAR.LSP Loaded!")
2 ]) x6 P* n- a% N(prompt "\n Enter 'SG' to start")
. c# ^6 m4 N6 f; D2 X% h;;;end suprgear.lsp7 k/ U( f: Y/ {2 \+ T- s
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的' P; m& b. i9 O4 d; }! a( L3 C
".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
: n7 v" v# V, A6 H& Z7 w入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
