有下面一段渐开线程序：- {" ]7 \3 y5 `, n2 P
;;;begain suprgear.lsp . r: N. B! U" q9 H/ D8 S% `
;************************************************* ) Y2 H1 J h6 a; K4 @
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
' K C3 n0 A+ B0 r8 l& };------------------------------------------------- 8 D0 W" w. j1 h# Z$ V, k
; This routine draws a spur gear using joined
- A2 Z& \3 E: i9 O7 g2 x( t; polylines. It lets you use any pressure angle : s* t7 m3 d, F1 a/ A. y
; to design the gear teeth.
' P. U" K4 E% e0 }) Y" O;*************************************************
! s+ W! z- H5 P3 a. V- J(defun err (s)
; ]1 j7 |/ y% }0 o0 y0 n/ `) ?* m(if (= s "Function cancelled")
/ E1 h/ \. s6 ~% A) a/ I. Q(princ "\nSPURGEAR - cancelled: ") 7 s1 l7 f: t* e0 S* h
(progn (princ "\nSPURGEAR - Error: ") (princ s)
3 t8 J: x/ H% I( H4 t; {(terpri)) " a' G. z. N2 y2 J4 F
); if 4 n& w- `/ p! h% c7 A/ D I+ x @: z
(resetting)
( w7 q) b# e. R# b6 P: X( H& f* l/ K. |(princ "SYSTEM VARIABLES have been reset\n")
+ Q6 o0 x8 E2 o(princ) ) n" e' M; K- F9 ^8 w/ d& f
); err
3 B I+ \" L4 T" J* Z6 {: W# v" j" `5 J7 i8 P& I
(defun setv (systvar newval)
5 k4 o# b5 \7 _) I(setq x (read (strcat systvar "1"))) & Y0 f# b/ e) z7 p: W; k$ I
(set x (getvar systvar)) . \4 ^$ ?8 ~+ E$ m
(setvar systvar newval) * M4 H/ L# o6 ~ _) A' g/ ?/ ~2 f% [7 _
); setv
8 h8 ?; K( z1 D. D3 a' E0 E) |" F. n" ]. \3 F
(defun setting ()
9 r- v4 v# j2 `# e(setq oerr *error*)
* a. P ^1 C$ `/ A8 \4 B+ K(setq *error* err)
/ |2 L$ N( ^0 r7 T R! \9 U5 g(setv "CMDECHO" 0)
7 l+ w/ ^- K. P6 h( l(setv "BLIPMODE" 0) 9 [! K) J- ]1 O* o5 i; q& r+ g" D
); end of setting + q$ u5 K$ _" ^; d2 Z# H, k2 @
(defun rsetv (systvar)
- s V& c' Y% }6 M% q- r(setq x (read (strcat systvar "1")))
/ b3 w9 h2 y. G' i; V/ a$ i(setvar systvar (eval x))
5 w6 n, u, o; X; v! _); restv
# x8 i+ y0 ]! X( _" L) j(defun resetting () - A2 b. [' s# G9 x& S- K) Q* i% G
(rsetv "CMDECHO") 9 h* R) E8 w3 ^; }- G# J+ T* j
(rsetv "BLIPMODE")
1 c/ K& p, x. |- {1 _! I# W1 c+ ~(setq *error* oerr)
L5 m6 R8 H5 w$ t R' K); end of resetting 2 \. D: B. N5 \8 Z% L ?: C0 e
/ s9 t* X/ M. k; ?, Y% @# K; \
(defun dxf (code ename)
/ Q* Z" T+ w, [(cdr (assoc code (entget ename)))
3 \: I9 ]2 k8 g ~); dxf / R' _, ]! \! S4 S. B
! T) H6 @; t$ G7 d; O. M
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
6 j+ ?+ T( l/ U4 p+ { `/ ^trimcode invent p0 p curvent linent linent2 ent2 p2)
, j1 m& O* M* i; X(setq D (getreal "\nPitch diameter: ") : ^6 X# M5 p9 a+ _) V1 t
N (getint "\nNumber of teeth: ")
; A1 \( u5 l! P) S, Tphi (getreal "\nPressure angle: ") 4 y4 V5 ]% ?0 E+ C6 Z/ |
phi (* (/ phi 180) pi) ; Pressure angle ' Y& s- G/ t- r& S. b
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
1 m" v- E' M! D. dRO (/ DO 2.0) ; Outside radius
7 _( v$ a7 o$ ~0 ?4 zA (/ D N) ; Addendum
. n3 v! l* C% dB (* 1.25 A) ; Dedendum
% M/ j0 {! b) e3 ^, }DR (- D (* B 2.0)) ; Root diameter
% V: y* K$ E ]DB (* D (cos phi)) ; Base circle dia.
( O/ e2 s: k1 R o2 Y+ {5 R/ kinv-plst (involute DB N phi);involute points
* A0 m" m2 B+ M: | |& \" \6 ~3 Ltrimcode nil 2 y* I( ?8 ]1 z" \$ L! n
); setq # ~5 q0 Y2 Z6 D q
(command "ZOOM" (list 0 (- B)) 3 o) J! D9 R9 U. C- \( }1 B2 t
(list RO (/ RO 1.5))
7 y; j, r; E' S% i" j); command / C/ o2 r0 g ?+ z9 j- @
(setq invent (draw-inv inv-plst)); Draw involute. 1 z y8 n0 I% L$ v! k+ J" P
(setq p0 (car inv-plst) 3 j. c1 d6 Y( \4 d/ A$ Q# N
trimcode (ext-trim p0 DR D);trim or extend
( ^8 ]2 o& y9 W); setq ; the involute.
# g/ G/ P% l! {- n(if (and trimcode (= trimcode 0))
5 d/ V/ {, S) _7 q& ^5 N(progn ; Joins the involute to the extension.
4 T+ I5 ]+ j" U0 F5 u$ ^4 o8 u(setq p (list (/ DR 2.0) 0)) 5 I8 x# Y0 r: K! A# E4 o4 u
(command "PEDIT" p "Y" "J" invent "" "X") 7 K6 d2 V, u7 \4 O" i. P* r4 f
(setq curvent (entlast))
3 @! T' i5 D' o); progn 3 G5 P$ O! c9 v" a: o
(setq curvent (entlast)) ! C. P* J6 _5 C {. G: R
); if n, x4 g& t* A- F
(if (null trimcode) (setq curvent invent)) 2 W n5 ` C! B. |; N2 d
(setq linent (draw-top-line D DB N RO)); top line.
7 c' s J( ?: u$ l) W2 k! o+ ~(command "COPY" linent "" "0,0" "0,0")
: N$ V( |/ {7 w0 U" b(setq linent2 (entlast))
0 i/ y3 V" J: Y& p! k+ }2 p: U& N( O(setq ent2 (mir-it curvent linent)); mirror curve
* X" C5 d5 V$ F6 p(command "PEDIT" curvent "J" linent ent2 "" "X") ; S) t* M6 f& z; A. e
(segment DR N linent2) ; Finish the job! ( J/ z5 D2 V/ z( l; V# j5 f
(setq p1 (list (- RO) (- RO))) " S$ G E ]: i. r
(setq p2 (list RO RO))
4 q* L; o1 r4 v6 g4 X) a3 @(command "ZOOM" p1 p2)
% x2 S5 P0 C; L3 { p3 H, _(prompt "\nConverting to POLYLINE, please wait...") - ~6 ?/ ~2 } \1 O7 o: y7 H% w
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
" r6 z9 m- v0 Q9 T8 D a! ~(prompt "\nAll done!")
% l( s' A/ d5 [1 i); spurgear $ m8 Q7 h7 ]) g. j' l
' K O2 T6 J w" j& q
(defun involute (DB N phi / numer denom frac theta2max 9 d$ \4 H) K; M
thetamax theta-inc theta plist RB xval yval p) ! @& R8 S6 q$ w6 F* W% H
(setq invfact 3) # _# L6 x. q" E
(setq numer (+ N 2.0) 4 I' {7 F( P$ v8 s" x% q( Z& m
denom (* N (cos phi))
2 g& L3 l, e6 Ufrac (/ numer denom)
/ q4 ~4 c( c3 Ltheta2max (- (* frac frac) 1)
: h, z0 A# J. X. U3 @) m/ c; c( T+ Xthetamax (sqrt theta2max) " D" G, H, C3 ?3 J% N
theta-inc (/ thetamax (float invfact))
& Y6 p7 X4 |: o! M. n6 }8 X: Jtheta 0 % O# p& b! X" I: ^$ h- @
plist nil
+ a' r8 {" [& t- t4 c2 `RB (/ DB 2.0) ) B: R' M; a. Y: K
); setq
. w3 {. S9 d; W. Q# i) G0 n(repeat (1+ invfact) 9 ]# L+ j. e! A0 I! ~- Z
(setq xval (do-x RB theta)
4 W4 }# f% L1 K; c9 n% w& |- Gyval (do-y RB theta) 2 V7 r) k M( ^" I
p (list xval yval)
0 F+ q" ?. {1 F6 Iplist (append plist (list p)) : W9 j9 b0 V6 q: b* o. C7 P$ a
); setq
% G0 |, k& ~& S+ \(setq theta (+ theta theta-inc))
! {, K4 ^- j/ I' B0 `' k( f); repeat
! n( z: Q: x; K, F9 D/ t; r" b1 rplist
# m; v& W. \( }9 I- ^. d); involute : x1 W$ [( ]5 u) V* N9 ?) K
1 B4 B7 A! ^. f. |1 Z/ u(defun do-x (RB theta) ) o b5 Q$ N- o: R+ t
(* RB (+ (cos theta) (* theta (sin theta))))
/ ?7 T! X% L) G/ E/ `); do-x $ L: r4 y3 b$ K! _: _- B2 Y5 z
& m2 P2 [( n: t- q, T(defun do-y (RB theta)
" m2 Y0 @2 a' B2 k6 ](* RB (- (sin theta) (* theta (cos theta)))) * M3 k7 l' a: q9 J4 V y. |
); do-y
" t: d0 Y* v' Z6 P5 u: c
. ^( O3 Q) f3 `; |6 I(defun draw-inv (inv-plst / dirpt plist p)
( V7 M5 Z q8 @. S4 i0 T2 u0 D4 k(command "PLINE" (nth 0 inv-plst))
' i2 L( \' N& P(setq dirpt (polar (nth 0 inv-plst) 0 1))
6 f" s+ d. R! G. l(command "A" "D" dirpt)
0 I J9 q j& y7 \(setq plist (cdr inv-plst))
) Z3 x* E3 ^6 P7 _(foreach p plist (command p)) ! K. t& o' o. i' g" u. q
(command "")
0 d1 S$ U& P- s3 u9 M(entlast) x6 x1 P) G' ]1 I
); draw-inv
" C- ?: s8 d4 U6 O. t
/ R# K* k2 E2 h) y# Q(defun ext-trim (p0 DR D / trimcode dist endr)
( n+ h- v1 E# Q( c% y0 q(if (> (car p0) (/ DR 2.0)) ; Extends the involute
0 T. U0 G: n5 z1 v3 G" n(progn
7 ]" v: j5 W# E- I: O5 i2 k(command "LINE" (list (/ DR 2.0) 0) p0 "") + [; P% d l. s4 e" A
(setq trimcode 0)
& y* ~" f% e, H) |6 e' G); progn ; g$ { }& |8 ^/ ^! R
); if
% F" f8 g& |/ Y1 S7 U3 M. J) y' ~0 O(if (< (car p0) (/ DR 2.0)) ; Trims the involute
- g& Z) t; p. j k: J5 A" V(progn ) r9 t% B2 Y# Y* O$ k
(command "CIRCLE" "0,0" "D" DR); Root circle o. I) K' h8 }% A/ @
(setq dist (- (/ D 2.0) (car p0)))
2 E, X7 V6 P# D& u$ G+ z(command "ZOOM" p0 # X6 b; e- I6 g& o+ [" W S% ?" i& J
(polar p0 0.6 dist))
( _. s4 f# `3 Y4 D( I" v(setq endr (entlast)) ! @ P/ S. R: Q; {
(command "TRIM" endr "" p0 "")
3 g, Z8 B. y+ s' Y(command "ZOOM" "P") ' `5 |- J4 M7 @/ N" P& o1 t
(entdel endr) 5 Z* x$ G9 v/ g0 \% T
(setq trimcode 1) 9 T& n/ u; |+ L2 v: s: q7 M3 k: }
); progn
3 v2 S0 I" Y, a: h8 ]: o); if
- m1 {+ w/ @9 l+ H% rtrimcode 2 ~+ Q& \$ e* A" M, n
); ext-trim . C3 ^6 N3 l" S9 K/ W
3 \1 a1 R- Q1 a1 V. n/ h! M(defun draw-top-line (D DB N RO / theta-p xp yp alpha " ~# [1 e& T& S& q* T1 M7 \
beta tang angend inv-endpt lend) G" `3 J8 `7 t+ \+ F1 e
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
& h4 _3 j5 @8 k& _1 W$ C9 dxp (do-x (/ DB 2.0) theta-p); This section
1 {& n( h6 |/ ]( Pyp (do-y (/ DB 2.0) theta-p); sets up angles ) k4 D2 g- F; i& g+ I: L$ Q
alpha (atan yp xp) ; for drawing a
2 ]6 ^7 h9 _% h' s0 f* Uabeta (angle (list 0 0) (last inv-plst)) . C0 w2 T5 z% i# L4 A l( ], G
beta (- abeta alpha) ; line across the . X7 h. ~9 ]" O
tang (/ pi N) ; top of a tooth ; H5 @" |8 x! h. T# Q8 h
angend (- (+ alpha tang) beta)
3 ?, J u+ F- L( T9 O+ Binv-endpt (last inv-plst); This also creates
+ L2 V4 q: ^+ l% G1 h% slend (polar (list 0 0) angend RO); the tooth
! M2 q. A7 a% @8 _' k/ J); setq ; thickness. + v, v/ X1 ?5 q+ E. ]6 |6 G+ |- y
(command "LINE" inv-endpt lend ""); Draws the line
8 R: v& v! A' O }) ](redraw) ; r8 p9 Q- i4 c% q
(entlast) " F( i" v9 b. h* `+ l4 ?- g2 ]
); draw-top-line
( p a- U& E4 @- v- f, H. w$ R7 V! S
(defun mir-it (cvent linent / pt) & y- I/ p& g# k0 Q% P" z- C
(setq pt (dxf 11 linent)) " ~. b1 E# R% v1 k6 j* O7 b* y
(command "MIRROR" cvent "" "MID" pt "0,0" "") . e) p" ]+ c) E" s5 X& \
(entlast)
# [" ~$ G% Q+ q Y( V0 j); mir-it
/ V, o# F" t0 j- Q2 }% ]6 U' C: P) h4 @. H) u" U- X- y A- x5 v! p
(defun segment (DR N en / p1 p2 ang dist midp p0 pang 0 R: \# b7 {" E* w# Y/ d
pang2 p p3 ent3 entl1 entl2 en1 en2)
F$ w( y/ D1 o$ Z+ r(setq p1 (dxf 10 en)
" P/ X& C% V' g' K2 R# Tp2 (dxf 11 en)
6 S* w: F8 l+ b- @7 B7 A" Oang (angle p1 p2)
6 k; q* _/ s1 b8 ^6 h, T6 f2 s0 Ndist (/ (distance p1 p2) 2.0)
# B5 u: j: [# bmidp (polar p1 ang dist)
# r# S+ f; R& g% ]' q$ {9 { Jp0 (list 0 0)
5 T0 W: ~4 O. f! s! D dpang (angle p0 midp)
+ E% g$ U) f ]! {& X% t! {, y, Gpang2 (/ pi N) $ M9 }3 @5 L4 [3 o7 C
p (polar p0 pang (/ DR 2.0))
: \* s4 D4 |8 G) Q% ap1 (polar p0 (- pang pang2) (/ DR 2.0))
: s/ h* P( w* r* G# ip2 (polar p0 (+ pang pang2) (/ DR 2.0))
, a0 B+ x1 n1 i/ Fp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) 6 y/ Z9 N* c0 L. x# b- m- S
ent3 (entlast); This is the tooth p-line 5 ^3 S7 a9 k7 Q1 T: J5 x
); setq . m [2 O6 f/ v& T7 p: V7 y- H; ?5 H
(command "ZOOM" "W" p3 p1)
* [' ]" V& N$ ?$ Z(command "CIRCLE" "0,0" "D" DR) ;Root circle 2 j/ F# N$ ~: t( T) U* Y8 k- P7 W
(command "TRIM" ent3 "" p ""); Trim the root circle
& ]! M5 T; R8 W9 U3 [, c(command "ZOOM" "P") * J2 C0 Q6 \0 @ `0 [4 g4 S1 F2 B, Q
(command "LINE" p0 p1 "") 8 w. M( l) b3 r5 O
(setq entl1 (entlast))
8 q4 Q* E9 ], R- q7 @2 W(command "LINE" p0 p2 "") # Z* F; M) q: Y: D
(setq entl2 (entlast)) c$ R0 p9 E: Q
(command "TRIM" entl1 entl2 "" p3 "") 0 a* h) c; Q8 p- d% o- E X
(entdel entl1) - B: ?' V# t1 V3 i1 e
(entdel entl2) " K3 R( [, U# ^6 r5 J& T' j
(entdel en)
1 z, ~, o$ \! m5 N( l(command "ZOOM" "W" p3 p1) 1 z. G: w+ _) d( M1 Q
(command "PEDIT" p1 "Y" "X") ' a7 O7 L! P! A: j+ ?. B. y8 p4 A$ g
(setq en1 (entlast)) 4 s: p3 _+ `0 ?3 F8 @
(command "PEDIT" p2 "Y" "X")
. k+ S2 S/ j$ v/ K5 C, U2 k(setq en2 (entlast)) : I2 \$ O# G4 `1 D- L1 q' ~" Z
(command "PEDIT" en1 "J" midp en2 "" "X")
, K H* S5 r4 _$ O1 Y3 M' ](command "ZOOM" "P") 7 y' L3 H Z: N4 L6 W+ z* ]
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") 8 c" ]& b3 X* Q' s
); segment 2 P3 a; [0 r: R# l: D+ J' v
9 R* R2 ?( w' h/ n
(defun c:sg () 9 N, x9 \5 e, W8 v4 ]" G
(setting)
; y. w4 `4 v+ n Z" F(spurgear)
& A4 l! Q( T" U& h" a/ x(resetting) # R' R+ c8 o: Z& k( B) S
(princ) " v7 ^( T6 f8 h+ p1 N
); c:sg
$ h5 h; S9 V- a0 i6 b
) `+ E4 E$ ~; d(prompt "\n**SPURGEAR.LSP Loaded!") ; g: v) e& L; g( ]1 {; q; U
(prompt "\n Enter 'SG' to start")
. A' J* G& R$ e8 k1 c0 f;;;end suprgear.lsp
4 i* O+ M' d! V Q/ R& x1 Z( m打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
& {# c, _/ a. `8 U".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输( L$ t- {) c% c5 g0 Z% t7 n- p6 z
入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
