有下面一段渐开线程序：: ^7 h/ C8 I( u y
;;;begain suprgear.lsp
! t( J2 L( q5 \$ P- }# m;*************************************************
7 }) q: C/ f" k( {" }/ C;SPURGEAR.LSP - a lisp program by Tony Hotchkiss * E4 }+ _) G) F( `. z: g
;-------------------------------------------------
' S, N7 _7 y. O& T. \; This routine draws a spur gear using joined $ _7 A( Z- ]: e
; polylines. It lets you use any pressure angle 0 K% R) |$ D a9 i2 {
; to design the gear teeth.
, k" S$ X! q) y( Z s* a( p6 p;************************************************* 4 b; b K+ [9 z7 S* U# r, j. t, J
(defun err (s) $ q: ]* c9 f9 I7 }4 C( ]
(if (= s "Function cancelled") ) r' ], M, e @: M @3 v+ b+ j
(princ "\nSPURGEAR - cancelled: ")
% t4 u0 i2 u+ s4 }(progn (princ "\nSPURGEAR - Error: ") (princ s)
3 @" U5 i2 D1 Y(terpri))
, o! V; y; o" H( b); if
/ _4 r" w" O9 X0 Y. d( b* f0 J. U(resetting)
" ?0 O% a ^# N3 y# e(princ "SYSTEM VARIABLES have been reset\n")
! ~$ e, t- w' @6 ~& j! ~/ \(princ) ) v2 _, B. C; r Q' E
); err
9 X; s! _3 s2 \. U1 E& m# u' B: ~6 q! s) X# ?
(defun setv (systvar newval)
( s# Z/ {. U) @- } Y) y3 E/ [+ P- S(setq x (read (strcat systvar "1"))) ) [* M8 w. Z, l, e( N! {4 H
(set x (getvar systvar))
+ s" S' d% G9 `8 ~, x3 ^(setvar systvar newval)
2 f: [3 K6 `& A); setv
" M7 }( }( h( h% X& p8 w8 }6 k; X& K( t" v* B
(defun setting () T$ w r/ q5 Z; s+ N# t
(setq oerr *error*)
% w6 [3 D& {! u" d(setq *error* err)
) n$ p. w9 g0 Q) R t(setv "CMDECHO" 0)
. C, i; P! v: g; \& |% Y9 u. u(setv "BLIPMODE" 0) / g6 R( }; r! \
); end of setting 5 E/ C7 G" s/ u" r* b
(defun rsetv (systvar) 0 {2 F g* [1 L/ d/ m- |
(setq x (read (strcat systvar "1"))) % \8 V# }" N' ~
(setvar systvar (eval x))
, w; E6 z7 G* l5 S); restv / I$ u! i( i6 q! y
(defun resetting ()
* y* a N" `5 Y7 N9 }(rsetv "CMDECHO") ( p5 F8 k# N, C% Q6 t; o
(rsetv "BLIPMODE")
! y" f8 a% E7 _" M(setq *error* oerr) # e; b- ?6 @4 i
); end of resetting
- ^% k: x7 u2 E6 T0 H
* G4 U8 L- X) n6 L9 W(defun dxf (code ename) ) L9 n; m |# K* s
(cdr (assoc code (entget ename)))
1 I2 ~, o/ l J! D); dxf % R3 S4 s% s0 k' O
4 Z X' d) {6 x6 X/ D9 E/ ^' D
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
0 ]6 a3 c, k, L i3 Atrimcode invent p0 p curvent linent linent2 ent2 p2) 8 c5 A5 g9 w6 y. l. G
(setq D (getreal "\nPitch diameter: ") . J% `6 k1 ?! x' k8 P. d* I8 F, n) D
N (getint "\nNumber of teeth: ") . v4 F" Q- @- |, }! h5 J4 l
phi (getreal "\nPressure angle: ") # j) c: N: P1 x# b$ y, n( D
phi (* (/ phi 180) pi) ; Pressure angle
2 r$ N0 b; C k* C5 XDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
6 B: \# I: y FRO (/ DO 2.0) ; Outside radius
& m3 \/ c$ k) d- T, K$ J- GA (/ D N) ; Addendum
# J0 u/ N, i7 fB (* 1.25 A) ; Dedendum ' Y4 W$ B: N+ G! G( ~; {
DR (- D (* B 2.0)) ; Root diameter 7 o; `; ^6 P+ d9 Z# J
DB (* D (cos phi)) ; Base circle dia.
* u# L) o3 V) P1 R+ hinv-plst (involute DB N phi);involute points , X, ^% }4 c- t8 l* V
trimcode nil & a% [2 t: V9 ]" i( c
); setq
+ f4 t( P. E3 @* R3 C! H4 e k(command "ZOOM" (list 0 (- B))
4 s/ G6 C% L' }* M$ i- v; s7 V(list RO (/ RO 1.5)) 2 T3 P7 T. t% f# D# s
); command 7 k/ ?) K$ ?# @+ v) \' l( V: R% w
(setq invent (draw-inv inv-plst)); Draw involute.
^) b- Z% k( i3 r& _(setq p0 (car inv-plst)
: `8 ~8 ^( b& y6 v K% |trimcode (ext-trim p0 DR D);trim or extend
. `: f' f; J, c8 e4 ^' v); setq ; the involute.
. |0 Z8 [3 c* O* b: c1 o(if (and trimcode (= trimcode 0)) . s7 Q! X6 |( A$ V4 n) k! p( ~
(progn ; Joins the involute to the extension. - y# E7 r: @+ q2 q; E* M
(setq p (list (/ DR 2.0) 0)) " s3 b" ?" }: ~
(command "PEDIT" p "Y" "J" invent "" "X") ?# q7 C0 f, R, k4 x3 o
(setq curvent (entlast))
4 C& S' l1 w6 M4 k* n, y, r. y1 ^ u); progn
2 L& ~: [$ U, \. B(setq curvent (entlast)) 8 I! a: k' e* k
); if + ^8 s& h& a( K" J9 ]% G$ O
(if (null trimcode) (setq curvent invent)) + C$ C: S* t- [2 k* i& L
(setq linent (draw-top-line D DB N RO)); top line.
0 u8 U# D0 M0 r/ A(command "COPY" linent "" "0,0" "0,0")
9 p0 o+ O/ W! s( u. W(setq linent2 (entlast)) ; W# ?, z P+ p n5 S; i- {$ [" i
(setq ent2 (mir-it curvent linent)); mirror curve
7 Q. a8 P/ f2 X) ~+ Q: d8 L0 m2 G(command "PEDIT" curvent "J" linent ent2 "" "X")
8 e% x2 N, s. \$ u(segment DR N linent2) ; Finish the job! ! l/ {6 W9 @& L: W
(setq p1 (list (- RO) (- RO))) $ y! S9 T3 H6 O: S: K
(setq p2 (list RO RO)) ( t, a2 I/ m. S6 I1 O8 E
(command "ZOOM" p1 p2) & p( r7 R0 M/ F) y
(prompt "\nConverting to POLYLINE, please wait...") 3 g8 k& H! ?2 b d# Q; b! ]" H) g# I
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") ; z! Q7 p+ h/ \. ]* a; u! N
(prompt "\nAll done!") $ y9 C' X( ?1 R3 P$ G2 h; b
); spurgear
; y+ ^( f6 b. H) `; Z* R; f5 m
% b6 l( R' `/ ^6 V+ ?8 w(defun involute (DB N phi / numer denom frac theta2max
' ]6 {, c2 m, w- h) B- tthetamax theta-inc theta plist RB xval yval p) 0 h, ?. o6 }- X! q
(setq invfact 3) 5 @. b' {( h4 X. O' F J
(setq numer (+ N 2.0) 9 [& Y6 Q8 L5 H5 H, G
denom (* N (cos phi))
3 X2 k$ Y# m. I- K" cfrac (/ numer denom) 4 I8 f V: l Z6 S2 \
theta2max (- (* frac frac) 1)
" H. |& N# h Z* C5 m: Z; Lthetamax (sqrt theta2max) + G1 `' O8 V. Y& K7 w
theta-inc (/ thetamax (float invfact))
. b2 U3 u9 e3 Etheta 0
0 c. s. z# C9 {. Y# W1 {/ kplist nil ) U5 N8 Q0 z7 \7 n, F: h
RB (/ DB 2.0)
( N3 p; F8 d, D4 [; y); setq ' X: _5 o7 a) J. ^
(repeat (1+ invfact) ' x& O) ?. g+ g" v1 ?9 f
(setq xval (do-x RB theta) ( L% @; f$ B: C5 F
yval (do-y RB theta)
% v( N! I: p% e) g/ I* bp (list xval yval) : x3 W6 G( B$ Z e: H9 r" V
plist (append plist (list p)) l6 [% a( W( }& X# o1 R9 J
); setq
% s h4 u9 ^7 P) q; O7 y: Y(setq theta (+ theta theta-inc))
- S" d5 G( J. }); repeat
6 g4 H0 Z/ a, d$ tplist
4 [, L n9 M4 z) |" y) n& n6 a; S); involute ' `( l1 Z# F' v% T9 S: \# J. N
8 \" b8 W- q; i8 j: |1 J; w(defun do-x (RB theta) " U* p Y' I+ G f2 \6 G; Y
(* RB (+ (cos theta) (* theta (sin theta)))) + X$ X' m( N! @; A
); do-x + {+ n6 `- m: k* l& `. s f4 _" E7 h
- A) Z4 B* y1 l6 M0 r% N
(defun do-y (RB theta) ! K6 K' ]0 H9 f3 t$ V
(* RB (- (sin theta) (* theta (cos theta)))) * `- N- g, b: b
); do-y 3 ^& L8 [2 |% O: e- r; x5 @; Y
# J3 i6 F2 Z Q(defun draw-inv (inv-plst / dirpt plist p) 9 X7 Z/ _" ~% ?" n& f
(command "PLINE" (nth 0 inv-plst))
) t8 h* S* T0 v% j9 \(setq dirpt (polar (nth 0 inv-plst) 0 1))
* G; A& H, \" ]. t& Q$ t(command "A" "D" dirpt) . m3 l, v& N" p7 H
(setq plist (cdr inv-plst))
/ X3 J, `% H, q! L, m(foreach p plist (command p))
$ m; K7 { l3 H2 Y. ~; c2 I(command "")
' R. u* d( [! ]/ m# \2 U) F& |(entlast) + G( A6 ]; [4 `6 k& T% O
); draw-inv
, m, Z9 g& f7 t( {
: |1 M4 v( x3 B" E(defun ext-trim (p0 DR D / trimcode dist endr) + J7 q: L6 x% u5 N) A1 {
(if (> (car p0) (/ DR 2.0)) ; Extends the involute
x) G7 w" X5 w) {5 N8 [(progn / K) E2 K4 t2 ]" q+ V& L
(command "LINE" (list (/ DR 2.0) 0) p0 "")
& u3 W; ?" f7 J' v(setq trimcode 0) * p' A }0 J# O- @4 A0 c9 A
); progn 6 V8 ?9 `: d1 R! g, T
); if 6 ]' D' ?! X" N4 r7 ^: e- C
(if (< (car p0) (/ DR 2.0)) ; Trims the involute 5 L7 R6 O k8 F) N
(progn 9 @9 ]% i. I3 S
(command "CIRCLE" "0,0" "D" DR); Root circle . t% s! i+ d7 r$ B) M) K B2 _
(setq dist (- (/ D 2.0) (car p0)))
0 k+ u9 d: y, X F; d4 t2 U(command "ZOOM" p0 5 i" V, S) i0 ?& g
(polar p0 0.6 dist)) ' T2 r% y! I. l' x) D4 o
(setq endr (entlast))
2 |1 l8 }3 z! @* ~1 t+ h- E0 F7 y(command "TRIM" endr "" p0 "") " ?2 m. {1 v( d* ]5 x5 }: _- T
(command "ZOOM" "P") Z, } f. y: R4 ~$ \9 h
(entdel endr)
9 Y* y/ Y7 F# g; o1 _4 r(setq trimcode 1) $ Z) \0 ^( m" p, V M' M
); progn
/ Y; d5 R% _+ x8 S" P: t); if ! F( `5 O6 W/ O0 }
trimcode
& i- y# \- a& |+ B3 B8 r. u# r); ext-trim 9 H) P& ]% n! t1 t6 E2 A1 N
! g% t4 r: M" Y, m' q
(defun draw-top-line (D DB N RO / theta-p xp yp alpha
5 m7 `* q. c8 e gbeta tang angend inv-endpt lend)
9 n5 l* D" m: D) u* v w0 W(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
& |* F1 a/ h; D' c" Kxp (do-x (/ DB 2.0) theta-p); This section , K( i7 C9 N% _) t, D3 [, [
yp (do-y (/ DB 2.0) theta-p); sets up angles
9 b3 \4 y* R% R- Ralpha (atan yp xp) ; for drawing a 3 i0 j2 r8 k8 E( q& |* Y+ V% d
abeta (angle (list 0 0) (last inv-plst)) - V& b/ t4 ?. _& ]5 n2 }8 ^( M, z
beta (- abeta alpha) ; line across the
7 y8 A% {, y+ }tang (/ pi N) ; top of a tooth ; _8 D$ t" u# D" |2 G9 U$ M
angend (- (+ alpha tang) beta)
D8 z/ o1 G/ O: |3 j8 Rinv-endpt (last inv-plst); This also creates
7 L% c( J) K/ U9 xlend (polar (list 0 0) angend RO); the tooth : T9 j: X+ F) E" ?6 i
); setq ; thickness.
, J k0 G: ^+ x& G9 `/ S) @2 F(command "LINE" inv-endpt lend ""); Draws the line
3 ?2 f& s8 ^. Q6 g(redraw)
6 ?' _; ~( t$ S- P; @/ t(entlast)
( _& z5 H3 I3 I); draw-top-line
3 t( [# ]5 x* I1 r( K9 s; T! s6 a. E# G k, A0 v. x
(defun mir-it (cvent linent / pt)
+ |6 P& P- ~6 x5 o$ E. o(setq pt (dxf 11 linent))
9 k8 r# F# J# |$ y(command "MIRROR" cvent "" "MID" pt "0,0" "") 1 p# H% o: r% F! a: c, U9 {8 M
(entlast) 0 @ R8 H* W8 u$ l
); mir-it
' ?6 C9 b( E1 q) a4 ?, v
! P- \8 d3 ?7 E* t& y4 w(defun segment (DR N en / p1 p2 ang dist midp p0 pang " V/ F9 ^ ~" O- Z
pang2 p p3 ent3 entl1 entl2 en1 en2) 5 H$ Z* p6 h( {/ h2 a
(setq p1 (dxf 10 en) 3 h m6 B3 x% W O: [/ b# L
p2 (dxf 11 en) 0 j; h+ l; k" I, l
ang (angle p1 p2) , R$ q3 E# W. U+ ~9 ^: d1 ~# }2 r
dist (/ (distance p1 p2) 2.0)
9 R8 j5 k: ~- v( u& A" ~ Smidp (polar p1 ang dist)
2 X" P+ u" a9 p @$ \p0 (list 0 0) y0 q# \, M2 }& j% E9 B
pang (angle p0 midp) 1 y3 _/ r, c0 J8 f4 B/ R1 x$ a
pang2 (/ pi N) T6 |) j6 V( Q4 Z" D
p (polar p0 pang (/ DR 2.0))
4 }! _$ t/ q) m4 Y/ w# [) u1 [" kp1 (polar p0 (- pang pang2) (/ DR 2.0))
6 ]. }- F- ^ q+ J, s: _5 Fp2 (polar p0 (+ pang pang2) (/ DR 2.0))
2 v `- t9 R9 H6 E0 p: V+ fp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
9 s |2 ?( z1 g% ]% w. Gent3 (entlast); This is the tooth p-line
* `2 h4 i; |9 m5 Z! r% C# ?1 y); setq 5 Y1 v# M1 j4 }1 _* Z6 j3 _ l
(command "ZOOM" "W" p3 p1)
. R4 t6 X/ w' R! g4 S4 o2 L(command "CIRCLE" "0,0" "D" DR) ;Root circle
& b. Y' E3 P8 n8 N% {# P5 O(command "TRIM" ent3 "" p ""); Trim the root circle
( m7 B+ a( P& u) Y0 @(command "ZOOM" "P")
* U7 H2 j- q, C1 H/ ^7 |" Q(command "LINE" p0 p1 "") 4 W6 E* z$ N; c! R3 N% r
(setq entl1 (entlast))
* O& Q/ ^# G, s5 N' b/ X(command "LINE" p0 p2 "")
; r, R1 X4 S) Z/ g& L9 q6 |3 e$ Y(setq entl2 (entlast)) X! a4 n' g( U0 O9 Q( v4 z- K
(command "TRIM" entl1 entl2 "" p3 "") ( y. S3 ~! R7 k" y5 D; w% q$ x
(entdel entl1) ! K- Y( \+ w+ F; U" r A
(entdel entl2) ! X# K% V1 N( r \; d
(entdel en)
$ A/ J {4 f- N1 i(command "ZOOM" "W" p3 p1) # y8 U7 N2 G4 u4 Y
(command "PEDIT" p1 "Y" "X") 9 h* g- {* L9 V/ o9 U0 p2 S
(setq en1 (entlast)) & X5 n" \: e' U, L) V5 Y
(command "PEDIT" p2 "Y" "X") ) d" J8 q. E. M% t& a0 \
(setq en2 (entlast))
3 n7 ~% R ?4 v! d7 `(command "PEDIT" en1 "J" midp en2 "" "X")
- T! b+ _7 v) N: j(command "ZOOM" "P") - R, h# A& @0 K( j2 K: V
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
) X8 h4 p8 F) v B1 o); segment ) z5 B0 \, W1 [9 b' A
3 R) V% _; O& l" j
(defun c:sg ()
9 C# r5 x X( c# H- o4 C5 l* A% L(setting) , V4 _' x' k' z: U, F5 N7 Z" F: l8 Z
(spurgear)
; e7 X4 @+ H* |(resetting)
5 I! q: x4 j/ a. Q" B5 O(princ)
# ^. N6 }/ p/ f. n5 w" n/ i); c:sg
! r1 R5 _; _- _4 q+ r1 P
* a& E) O2 h9 _) A% Y( i(prompt "\n**SPURGEAR.LSP Loaded!") 7 f9 |9 h) f6 O" m0 u
(prompt "\n Enter 'SG' to start") y( |9 c+ i$ k: h- Q
;;;end suprgear.lsp
# d/ I% c3 {1 J1 m8 ]打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
$ n$ s# ? a* u& c1 e9 i".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
0 j7 o( L: C6 W: I入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
