有下面一段渐开线程序：
4 P: f& n H& a3 q;;;begain suprgear.lsp + U4 ^* D( S+ v5 l, C5 c
;*************************************************
$ c2 I2 S1 T* p0 ?7 r& S) h" Y;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
' \) t Q+ Z4 Z. c4 ?;------------------------------------------------- 1 x! O2 \0 a& R% ?! S
; This routine draws a spur gear using joined 5 N1 V% \% c: Y8 C3 t8 ?. h
; polylines. It lets you use any pressure angle ' P5 J2 ]! z7 K& @* t
; to design the gear teeth. 9 f; a7 w$ y3 I7 A0 b' t) `
;************************************************* * y" y1 L+ D* {3 `/ v; K5 \( M
(defun err (s) 7 z: A% N# S& G1 j% g
(if (= s "Function cancelled")
2 c3 g2 c# Q$ Z6 z. U' B(princ "\nSPURGEAR - cancelled: ")
4 {( N6 D- F5 D+ {3 W/ {(progn (princ "\nSPURGEAR - Error: ") (princ s) 0 b2 t. j( @( \5 \
(terpri))
- |" q& l7 q6 z" w- \); if
5 ]( H5 v8 F" u(resetting)
; D3 T V! F; y' ~% J% o! ~(princ "SYSTEM VARIABLES have been reset\n") . ?6 y3 o4 x) o$ Q9 }6 |$ D# _
(princ)
$ s; x# r2 k1 t3 l); err
% m) P0 L, W- X4 Q% _; z* Z! E9 L! ^- w N% O3 M
(defun setv (systvar newval) 7 L3 O9 B# J1 M: c# C
(setq x (read (strcat systvar "1"))) / @* c& ~- s3 @ |
(set x (getvar systvar)) 8 M( l* [, l, U5 t+ X3 g
(setvar systvar newval) , T: F% e, ]7 D" z- u8 q6 B$ F
); setv - \9 L5 m }$ k8 z/ x3 z3 c
2 A6 x& u0 r& R(defun setting ()
, t4 \* |" m. {( \(setq oerr *error*) / ~8 o3 V- i5 B7 J
(setq *error* err) " u2 Q M3 N7 P7 n% f
(setv "CMDECHO" 0) 1 E, j0 X- o/ b4 `# y3 o
(setv "BLIPMODE" 0) + j& b7 H( @) v6 q9 m+ x
); end of setting , z: M. @# v$ G7 i; d
(defun rsetv (systvar)
e. ~& r" @7 \% d+ O$ g(setq x (read (strcat systvar "1"))) " U2 J$ z& _" }
(setvar systvar (eval x))
$ r* S* \* r, `4 U% d& _6 k1 Y. s); restv
, S2 G g! ] T5 C(defun resetting () ! F$ N) Q5 c, n5 A! k2 B
(rsetv "CMDECHO")
y: |7 A; S4 ]5 m x1 c7 l(rsetv "BLIPMODE")
* I9 E/ ~; b% p$ J, v, f(setq *error* oerr) 1 M e2 r/ D9 [: J ^2 L" n: ?) M B `
); end of resetting . U4 P) B# u' y* W3 A9 d
+ k I: p" M" o; q/ q T$ H( p
(defun dxf (code ename) 3 P0 m. r8 N* c$ w) ?
(cdr (assoc code (entget ename))) . w. |" C3 @- e' @& i
); dxf & e n; ^( `' D: X; N
& u9 e. M0 ^7 L; V- \% \0 p9 |, B
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
# k! `+ X5 B' s6 B1 M/ ltrimcode invent p0 p curvent linent linent2 ent2 p2) ' F( @9 P8 I4 w* K
(setq D (getreal "\nPitch diameter: ")
- I; F# B' Y+ J/ S0 |/ Z% D; PN (getint "\nNumber of teeth: ")
8 q2 Y6 s& Y% ]phi (getreal "\nPressure angle: ") ) F3 f' T2 V; Y
phi (* (/ phi 180) pi) ; Pressure angle
1 {+ I& a% d. z$ k& K7 g* VDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter ! e8 S: g D! W# ^/ o
RO (/ DO 2.0) ; Outside radius * P- ]% D1 l0 c6 L, b
A (/ D N) ; Addendum , m7 |, n. N6 v1 N( K
B (* 1.25 A) ; Dedendum
. ?, |0 j" _$ \" iDR (- D (* B 2.0)) ; Root diameter 6 L# C$ X* {+ b. t% S/ s
DB (* D (cos phi)) ; Base circle dia.
) V, x9 Y6 W# e$ Iinv-plst (involute DB N phi);involute points
, V) x8 D! n7 L9 z$ s" Gtrimcode nil
7 z& J" Y/ `$ b3 \8 I0 N3 ~, P); setq / \: j0 T( r" P4 d* ?/ m
(command "ZOOM" (list 0 (- B))
: { y0 a/ P: f(list RO (/ RO 1.5)) 4 O7 B! Q0 h/ U) Z
); command 4 c+ k1 B6 [$ u9 n" S. s
(setq invent (draw-inv inv-plst)); Draw involute. ' C0 @2 H3 @' V( G6 n
(setq p0 (car inv-plst) / J$ o3 g; _+ X% Z7 Y
trimcode (ext-trim p0 DR D);trim or extend
0 p- j" J/ E! P. b/ F! T); setq ; the involute.
3 |6 C$ I+ p6 q7 a5 @5 z- S3 b(if (and trimcode (= trimcode 0))
* _5 W$ {4 R* l, V! H% f(progn ; Joins the involute to the extension.
g: a8 H& f3 z' _(setq p (list (/ DR 2.0) 0))
: \- R* s4 x7 l(command "PEDIT" p "Y" "J" invent "" "X")
/ a& r& |9 }$ S" l a* v3 @0 `7 p(setq curvent (entlast)) 9 z. f0 e4 p9 ^6 G& O+ {& ~3 ]* Z5 j
); progn 6 R! H2 u, o1 X* f2 z
(setq curvent (entlast))
) E1 e' Q; i$ N0 v& m) V); if 8 u, d8 ^ M0 u. H0 z
(if (null trimcode) (setq curvent invent))
. D2 Z2 V L" W8 t1 P(setq linent (draw-top-line D DB N RO)); top line.
7 ]! d& c; @9 x& r" @" z* D/ p(command "COPY" linent "" "0,0" "0,0")
9 v) J K0 A* Z5 b+ B(setq linent2 (entlast))
' k4 z1 d1 x$ K. B6 n6 W(setq ent2 (mir-it curvent linent)); mirror curve
' w6 I" u+ i# P8 K& M' d(command "PEDIT" curvent "J" linent ent2 "" "X")
# l$ H! ~3 ?% |(segment DR N linent2) ; Finish the job! : [. w5 g, [. F
(setq p1 (list (- RO) (- RO)))
- W* } d7 I% n; a) l; a# f(setq p2 (list RO RO)) 7 d# c0 z# y, c) n0 _1 S1 r
(command "ZOOM" p1 p2) 0 K: w# V* h5 r0 C M
(prompt "\nConverting to POLYLINE, please wait...") 0 E/ T! u: S0 S# ]' ~0 V
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
7 o2 `4 @/ f3 P* K* W; C" E(prompt "\nAll done!")
7 A1 }6 @- Q$ X+ N2 Z); spurgear
6 D5 E2 P3 T5 M! _5 t3 w! ]
# Y8 m* J5 b Y4 A% U(defun involute (DB N phi / numer denom frac theta2max
! W- v: x* ^% D/ v$ C+ Nthetamax theta-inc theta plist RB xval yval p)
3 |; z8 M, _* ~0 A1 H. ~(setq invfact 3) 1 B1 ~7 g4 r: t" l$ o: ]. J
(setq numer (+ N 2.0)
5 h7 ]% _$ r7 ]. ^) h! gdenom (* N (cos phi)) ' R2 F9 ~' f5 v) `
frac (/ numer denom) 4 R# R6 P0 S" F( ]6 Q2 `
theta2max (- (* frac frac) 1) 7 S+ U& _$ n& y4 V- t
thetamax (sqrt theta2max) 3 z0 C6 w1 q* ~) E' H3 g2 J6 m0 J
theta-inc (/ thetamax (float invfact)) 3 b R) x9 Q. t* T! L' w2 l
theta 0 : S2 J1 P9 n. {5 j
plist nil 1 @5 `# F" V" p/ U
RB (/ DB 2.0)
; k0 U3 G' k& p8 j; A1 i); setq & }4 S8 d8 c6 o; c; D0 c
(repeat (1+ invfact)
+ U8 C9 G4 y. r0 F: M5 J. t# e(setq xval (do-x RB theta)
5 [! ?' m0 D7 syval (do-y RB theta) * D+ G8 d, w$ r' b/ i2 P3 D5 C
p (list xval yval) 9 K! n* _( l# t
plist (append plist (list p)) 4 z( Y: j5 S9 ~" m, H. B
); setq $ \6 y2 j' s3 y! |7 R& l' u/ D
(setq theta (+ theta theta-inc)) + z' u$ D$ [6 T F6 K4 P" Y$ G
); repeat + n u0 C5 Q" C A
plist
- C7 a$ T- ~) ~& Z$ X: \); involute - g" U5 k. ~/ t8 a
) o' p% i. ?+ M+ U$ S! P
(defun do-x (RB theta) |# L; e( t2 q- C9 s- c4 _
(* RB (+ (cos theta) (* theta (sin theta))))
$ g- p7 |+ m' j R); do-x
9 W3 |0 X: q0 s: }# t" b \9 E
* L- o; n$ v! V+ W9 n9 n* Z(defun do-y (RB theta) 4 w, i$ \) `# X% Q2 t9 ]2 {
(* RB (- (sin theta) (* theta (cos theta)))) : p0 N1 s$ W* v L H9 e
); do-y
+ Z4 {4 H; D) Y; I; H5 m2 [6 _4 q; ^5 V- k: F7 {
(defun draw-inv (inv-plst / dirpt plist p)
0 ]' {% e- m! V1 \4 H) J( ?2 L(command "PLINE" (nth 0 inv-plst))
/ |/ C5 ~+ A4 v1 q& F(setq dirpt (polar (nth 0 inv-plst) 0 1)) 0 T; ? D; G0 K, W5 A3 k
(command "A" "D" dirpt)
( V" @$ l; C* N/ G! m(setq plist (cdr inv-plst))
+ N0 w* T1 [! Z6 k3 m7 _# \(foreach p plist (command p)) - |! h, P7 a# Q) @, c! z6 H
(command "") 6 i: s$ w \9 V
(entlast) 0 w0 ~0 x, ~; h$ y6 o+ ~ q
); draw-inv 5 I, D$ G/ h. u+ i i. a% [, m
. x k+ _! a7 {2 H
(defun ext-trim (p0 DR D / trimcode dist endr) ) U% C. X* U, \7 M: N! h; l* k( a# e! i
(if (> (car p0) (/ DR 2.0)) ; Extends the involute 0 @' P( M: e8 a2 n6 n0 C& E
(progn ' p8 K d6 D4 f5 k( e) Z7 r
(command "LINE" (list (/ DR 2.0) 0) p0 "") 9 o$ Q5 U5 V! u" m& Y" ~# a) e4 @* G" @1 f
(setq trimcode 0) 1 J" P% W2 E8 G. ]
); progn
, X9 Z( j$ X8 b/ G); if
+ h' B+ I) \+ Q' |(if (< (car p0) (/ DR 2.0)) ; Trims the involute : W3 e2 C; a9 M
(progn 5 }$ v9 O% S) S" C7 K }9 [
(command "CIRCLE" "0,0" "D" DR); Root circle 2 N- E. A4 ]' v( Y1 e
(setq dist (- (/ D 2.0) (car p0))) 9 x" B9 g8 D" E
(command "ZOOM" p0
6 u: I! E2 y% p0 S(polar p0 0.6 dist))
* ]/ p* H& ^4 L q3 G9 a, d, W(setq endr (entlast)) 7 o* j5 H( |! ^$ ^( P. n" v
(command "TRIM" endr "" p0 "") + I0 L& }6 V2 U8 z# j$ h# I
(command "ZOOM" "P")
8 ^6 n7 N0 }; C4 L(entdel endr) 6 `5 g! d' d) V1 ?: n
(setq trimcode 1) * H* ~) H7 ^; B, |* P4 p: ]
); progn
$ _# O9 p& T: e5 R% ?) _' _); if
6 x0 E; ] h$ S# J/ U8 |7 otrimcode
4 F: l* U8 l R); ext-trim + F% g; _& d2 s" C. ]5 M
& \- }0 h" b, e2 u: x/ Q
(defun draw-top-line (D DB N RO / theta-p xp yp alpha # q; }# \$ t1 m5 {
beta tang angend inv-endpt lend) " s$ b$ @, M1 b% ~. |
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) ?' {8 R9 J: O/ ]! A$ K1 ^
xp (do-x (/ DB 2.0) theta-p); This section ' ] [1 q& U0 w5 \8 }) u8 Y
yp (do-y (/ DB 2.0) theta-p); sets up angles
$ ~4 |) p& Q& n5 oalpha (atan yp xp) ; for drawing a 9 m* y" H) A1 R5 @0 S3 I# j0 v: i
abeta (angle (list 0 0) (last inv-plst))
# T, s' z1 N- m' W2 a4 hbeta (- abeta alpha) ; line across the $ n e! [* n: k+ S- z- d# t
tang (/ pi N) ; top of a tooth ! }9 X' Q3 @, Z+ ~, G
angend (- (+ alpha tang) beta)
7 Y! Y" @* o; Einv-endpt (last inv-plst); This also creates " Y/ ]! X% s Q' Y A' y
lend (polar (list 0 0) angend RO); the tooth
' \& y6 T) U$ j# j, N! T, G); setq ; thickness. & ]) I% }, M# F3 u7 y
(command "LINE" inv-endpt lend ""); Draws the line
: {* B# V: b9 } m# C(redraw) K/ b, o6 i; }& k% @7 Y5 j
(entlast)
2 I/ [8 P3 n( g, o/ I); draw-top-line
) l% Y' i* q+ u# c, v) a& l) z8 Z* p. w( W, T
(defun mir-it (cvent linent / pt)
7 J( |$ l5 x- x6 F2 z4 T, V(setq pt (dxf 11 linent)) $ V. Z! o+ R/ \
(command "MIRROR" cvent "" "MID" pt "0,0" "") " X7 _" C8 G" q# L* K) C* [6 s
(entlast) ) E% \! b+ b+ g0 W# H- ?6 |
); mir-it ! K* B6 G0 i, b1 |; u2 J
3 c$ Y6 Q, x1 ]6 I6 u9 r# P(defun segment (DR N en / p1 p2 ang dist midp p0 pang 8 A& e' Q% y3 u$ R
pang2 p p3 ent3 entl1 entl2 en1 en2)
0 h4 d& r- C( n, Q(setq p1 (dxf 10 en)
7 G& @7 A) S7 n- P }( C Ip2 (dxf 11 en) 4 D- @) n! a$ S! X+ Y
ang (angle p1 p2) 8 G5 [8 b7 @0 d7 Z9 n' G
dist (/ (distance p1 p2) 2.0) ( f7 N- I7 v; Y- o- E% ^, Y/ c, V" |
midp (polar p1 ang dist)
; \0 d; s, v) P! F9 b9 J, Jp0 (list 0 0) 7 V( o7 ?! I4 `7 [& E
pang (angle p0 midp)
/ R# ?$ W1 i' G% qpang2 (/ pi N)
H8 e% }: L$ b9 o: Op (polar p0 pang (/ DR 2.0)) : F7 m+ c" O8 i0 C/ g# ^9 }! C: V
p1 (polar p0 (- pang pang2) (/ DR 2.0)) . t7 T' s5 Z) i" F
p2 (polar p0 (+ pang pang2) (/ DR 2.0))
. k4 a; d. U: W8 p+ Mp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
5 g" e( m0 j) t& a4 Q& y' W0 Kent3 (entlast); This is the tooth p-line
+ ~7 k, e% T% ^1 t4 n' ]/ C, j); setq
, X. h6 h8 g b& R(command "ZOOM" "W" p3 p1)
X8 J! e8 H. I% [% X& Z(command "CIRCLE" "0,0" "D" DR) ;Root circle 2 I6 @, [1 ]) ]
(command "TRIM" ent3 "" p ""); Trim the root circle ( b5 _; U- y* p* W
(command "ZOOM" "P") $ k. e4 R3 _( _4 B6 I* }$ N
(command "LINE" p0 p1 "") $ g R% z& ~8 n( R' }
(setq entl1 (entlast))
% t4 s4 ]* L& R) I1 B+ s: g(command "LINE" p0 p2 "")
! r* S' Z% W, } K- T(setq entl2 (entlast)) + ]! x; D) e+ m1 X- v7 @
(command "TRIM" entl1 entl2 "" p3 "") - {) S3 u: S9 M8 t( O) f! A
(entdel entl1)
/ o: A% R6 Y2 G# ?) I- V" O. ~(entdel entl2)
! g7 M3 c/ ?; D0 T(entdel en)
: O* n, E- R3 _(command "ZOOM" "W" p3 p1) 7 y% n$ @6 Q$ @# V/ C
(command "PEDIT" p1 "Y" "X")
( s8 X" e( z f# q8 P(setq en1 (entlast))
/ k- y! K, v* k) [(command "PEDIT" p2 "Y" "X")
) y% D6 b0 f2 o; p& {( E(setq en2 (entlast))
; k8 j3 m6 I+ z$ X: U4 K& I(command "PEDIT" en1 "J" midp en2 "" "X") - m* t6 W# j4 b
(command "ZOOM" "P")
2 o6 R$ y( K @! k" I3 n2 J& i(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
4 L/ i4 o. D( j- R9 M); segment ; ^6 }( Q/ f( Z5 O
0 S s7 d0 a) T1 Z% D(defun c:sg () 2 m4 t% I, |' o3 z
(setting) b* S+ p; g. }$ U6 r0 B d
(spurgear)
8 W# ^- _7 [0 K7 Q- j0 r% X(resetting)
1 N+ e% P1 B. p+ G1 Y+ C' Z(princ)
9 x$ J t7 i" Z U0 \' c3 T); c:sg 8 {7 k8 m! Q5 o4 g
: W( Y, K! R! c4 L
(prompt "\n**SPURGEAR.LSP Loaded!") + P# n- d7 f+ y2 T! ?* Z' i
(prompt "\n Enter 'SG' to start") 5 e1 h5 J" i. G6 }
;;;end suprgear.lsp
' X; t: u6 D9 |! |打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
8 L; N2 z# f: R- K: p+ U" c2 J2 W9 @".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
4 u7 v* c2 ~3 c2 U% E( E# D6 C入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
楼主
