有下面一段渐开线程序： A) A) h9 a4 o
;;;begain suprgear.lsp / z% n% Z4 H$ M$ P- D$ \2 {5 \
;************************************************* # U I+ v6 ^$ Z, n" d. u
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
0 _: w8 X7 n7 }6 l6 n! t;------------------------------------------------- z6 f2 u8 r* g* K) n2 a9 e/ W
; This routine draws a spur gear using joined
( y; ~2 a& X5 V% |3 ]& ~7 j; polylines. It lets you use any pressure angle
& @( f/ e2 j# E) u; to design the gear teeth. ( M9 S- |7 g% i/ m3 U7 v$ x
;*************************************************
3 L* l/ M; I, T3 ](defun err (s) . P R: |" N0 D% ?' f. k4 `
(if (= s "Function cancelled")
% N9 u& G0 ?( ^2 @+ m(princ "\nSPURGEAR - cancelled: ") ) n" r1 G+ z% q/ R7 n* M' [
(progn (princ "\nSPURGEAR - Error: ") (princ s) 8 d+ s3 j0 y4 }/ q" i' v3 k' i' R* S
(terpri)) " j7 j) O4 E$ y
); if & `0 ^2 x9 ^- x; D! O# Y# d
(resetting)
, ~; x( q7 k4 ^* e8 ?" O8 j% q(princ "SYSTEM VARIABLES have been reset\n")
! m2 ` i* a4 d! q(princ) $ e: Z0 l1 a5 c# E7 F8 u- y6 F8 n
); err
; V4 K/ u; C1 f
4 P, y3 B# L3 r/ d) j(defun setv (systvar newval)
( I4 }1 B$ M9 G5 h1 ~# |; ?(setq x (read (strcat systvar "1")))
# h% J' o- a- o7 w8 M% W(set x (getvar systvar))
' J; e& h2 C9 i" S( S1 t& {(setvar systvar newval)
* W5 u- A0 V( w) n* C# c$ _6 r. z" ^); setv # S I1 s8 e, W: o: C
6 W1 N2 q: S& @1 y
(defun setting () : T/ c7 z& b4 n/ u$ w, b/ M( [
(setq oerr *error*) 7 N( m+ s4 P3 z4 u4 o
(setq *error* err)
( k8 N# n3 Y& {* O! d) ?; l4 B(setv "CMDECHO" 0) 4 N/ @4 ]! P! u* V! |2 H
(setv "BLIPMODE" 0) & [1 x! ], D+ Z9 B2 j
); end of setting 8 ?+ p+ h* t' Q* ^' E! I6 J* o
(defun rsetv (systvar)
' u, O( ^* L0 ~# y. s; V4 Y) `; k(setq x (read (strcat systvar "1"))) 5 J4 E4 ^+ ?+ Y6 g' Y* f* |
(setvar systvar (eval x))
& W+ J1 Y$ {* u( ~- }); restv
, O1 W) E6 E# P/ _3 V(defun resetting () 8 Z1 r* B9 x9 A; U$ P0 m1 Y# z
(rsetv "CMDECHO")
& T$ F! S( u9 ^3 E(rsetv "BLIPMODE") 2 [- @7 R6 M- v* }& L
(setq *error* oerr) # |1 V3 `# A4 H! A) d* g W" c
); end of resetting 3 K) Q( @% n$ O- K
( s/ }) D3 ?4 k6 e
(defun dxf (code ename) - s( {0 @ Z3 f! C+ C
(cdr (assoc code (entget ename))) ; T- m$ @# L6 d8 y! N3 I
); dxf 6 z# c0 w$ ?% Y5 E
! F5 ?" F, s1 f( ^(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
8 ?: R* n& [2 G% V; vtrimcode invent p0 p curvent linent linent2 ent2 p2) / q6 {2 d7 s+ e; {
(setq D (getreal "\nPitch diameter: ")
$ `! O1 g; u% _% O3 oN (getint "\nNumber of teeth: ")
7 e4 j |, f( i( nphi (getreal "\nPressure angle: ") ! h# ]+ h. J. r
phi (* (/ phi 180) pi) ; Pressure angle
0 _/ a$ G2 l0 E8 b9 D; i2 B/ w! xDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
, X# B4 p0 ~1 _* fRO (/ DO 2.0) ; Outside radius - h. t/ E: \9 ]1 v1 T
A (/ D N) ; Addendum
7 G9 S8 t: D! S$ D/ d5 ]B (* 1.25 A) ; Dedendum
2 r" K, K- O/ L p8 gDR (- D (* B 2.0)) ; Root diameter
- L" i3 j9 j, Q. y" gDB (* D (cos phi)) ; Base circle dia.
9 `% ]. S" s/ ~" ?3 O% Zinv-plst (involute DB N phi);involute points 8 o z% j" G) u" O: Z. P( ^% S5 W' ^
trimcode nil
" y, B/ e+ Z6 B8 o2 Y6 u: _8 J* W); setq / Z* A8 A. B; G9 h* a0 Z: S) |
(command "ZOOM" (list 0 (- B))
: T8 N7 Z8 Q9 e(list RO (/ RO 1.5)) - a/ G- p$ u1 z+ J
); command
D4 l8 |, S/ y. k6 Y# n(setq invent (draw-inv inv-plst)); Draw involute.
% j" `- W* @3 ]5 J |(setq p0 (car inv-plst) ; g0 W6 Z# }) w! k& O r9 [) \+ S! U! A
trimcode (ext-trim p0 DR D);trim or extend 4 b8 S1 ?, L. ~- W
); setq ; the involute.
/ l4 e- i- Q \/ ^(if (and trimcode (= trimcode 0)) & _4 [ z# @- ^* z$ N; |; x: t2 N [. |
(progn ; Joins the involute to the extension.
5 y l9 P% _$ o- z(setq p (list (/ DR 2.0) 0)) ' B4 N: W8 Y5 A" c
(command "PEDIT" p "Y" "J" invent "" "X")
, n9 Q ]3 b1 i) p; Z! G0 p5 G(setq curvent (entlast))
, y) }& p( N6 _9 n* a' o( b); progn
# x+ T, A( y3 V7 `; d+ B) z3 Q(setq curvent (entlast)) ' H' L' {6 Q" B) w
); if 1 X3 |& j* l& G& _- w
(if (null trimcode) (setq curvent invent)) ! m# L9 E5 R5 e% z8 b: R: e6 T
(setq linent (draw-top-line D DB N RO)); top line.
, l$ E. Y* c3 l9 q3 ^8 @% S(command "COPY" linent "" "0,0" "0,0")
; _1 b' s. A+ z(setq linent2 (entlast))
- F1 h# u5 m7 p& h0 |1 [, R(setq ent2 (mir-it curvent linent)); mirror curve - s. ], n# h4 z" _9 q/ Y
(command "PEDIT" curvent "J" linent ent2 "" "X") 1 k0 u; V6 t& m6 U6 m. {/ s
(segment DR N linent2) ; Finish the job! 2 t( L E% L$ ?* P" Q& o/ ^. i9 a
(setq p1 (list (- RO) (- RO)))
" j- M; R$ w' z; z3 ?; V! f(setq p2 (list RO RO))
+ P# k6 C, A7 B(command "ZOOM" p1 p2) / z* m; X" r5 c# v
(prompt "\nConverting to POLYLINE, please wait...")
! b% J( N, g4 {, T/ `! m+ E- x(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") N: u2 }( e' U3 X7 a3 H% n
(prompt "\nAll done!") & z7 V8 ?* V6 I* G* J1 \
); spurgear . z8 [, I2 s+ ]' r$ @ ]! l0 q
; m3 m& Y, b9 C- ~, [0 |(defun involute (DB N phi / numer denom frac theta2max
8 z) K; n! E6 I% V! b' t; `+ Wthetamax theta-inc theta plist RB xval yval p)
^# E7 c) H) ?' {6 Z(setq invfact 3) 8 w' i0 |8 x" A s0 F/ H
(setq numer (+ N 2.0) . ?9 ?. x! @) @! _: P' J1 }
denom (* N (cos phi))
+ e6 v8 H& ^- Q x" }8 {6 Yfrac (/ numer denom)
& v" j+ @1 G5 F' @) \theta2max (- (* frac frac) 1)
$ S8 l( Q9 M2 v: l7 o1 E U/ Z: Gthetamax (sqrt theta2max)
) v( P1 P E4 a( jtheta-inc (/ thetamax (float invfact))
9 Z) K; F+ B h4 Atheta 0 6 p6 O3 c; d+ k8 F- I I$ a
plist nil
: l1 J+ z# J3 ^+ c2 d" jRB (/ DB 2.0) # X" Q+ `: q% x o( i; m
); setq 0 U' m$ H3 j. R- Y* s
(repeat (1+ invfact) ' Z. ~/ L( [& f% o R8 b* J; p
(setq xval (do-x RB theta)
3 J9 m6 H2 q4 {$ T- u9 Cyval (do-y RB theta)
* e7 I) g% M* z; gp (list xval yval)
1 Z% M- B7 `& p4 m7 }0 l. Oplist (append plist (list p)) 0 {! j5 w* d& b
); setq
- U$ @( V9 K: e7 O7 I; ~(setq theta (+ theta theta-inc)) . Y8 h. |. F. p% K5 ?$ ^: J
); repeat 8 Q! _, U+ S0 W, N) [2 E4 B6 e
plist 0 Q" \- w# K _* y& u) l
); involute
9 r$ a7 Q8 a I6 b% ?6 d, E$ d6 n& L0 O, s4 K) n# x7 A
(defun do-x (RB theta)
, {4 X* {/ a( [& j8 f(* RB (+ (cos theta) (* theta (sin theta)))) 6 ?: z% q* _# r/ S: ~/ G
); do-x ( m+ D; f$ t3 {4 t& N& M% }
1 S( f& L6 W3 n$ U(defun do-y (RB theta)
2 d: e* u0 ^. e# A! W: y/ l, \(* RB (- (sin theta) (* theta (cos theta))))
6 S6 i6 J' f0 I5 w9 x. _); do-y 0 r1 N7 x/ K7 X5 |9 ] Q" N% R" F
& K8 a# X$ A. A$ m! N0 F+ H(defun draw-inv (inv-plst / dirpt plist p)
. \3 T+ Q* ~* Y/ ^(command "PLINE" (nth 0 inv-plst))
1 S2 B t8 d! o# g3 B(setq dirpt (polar (nth 0 inv-plst) 0 1))
2 ?8 J- @5 B. E(command "A" "D" dirpt) 3 S4 X4 |5 Y5 k' I3 U0 j
(setq plist (cdr inv-plst))
+ o8 }4 b* c3 g! ~ }' e& V(foreach p plist (command p)) 7 o9 k: R, i7 D9 \% n1 e+ _
(command "")
. `2 N. W- y# n# C1 `* ^2 C(entlast) 7 x4 q% j3 S2 p7 M
); draw-inv
+ Q# d2 p I% u" C
% Y: l: e+ q4 O. d# I \; H1 J' H' y(defun ext-trim (p0 DR D / trimcode dist endr) & v( W& [# z8 |8 |: H
(if (> (car p0) (/ DR 2.0)) ; Extends the involute . }* N3 [5 ]" M) E
(progn
( ?- ^ g8 _- {, V: D" A(command "LINE" (list (/ DR 2.0) 0) p0 "")
8 {/ W( g o$ L$ B+ b7 t(setq trimcode 0) & y' i" c6 f" w/ f& O
); progn " A P/ z& D: f. F* w
); if ; N& o y( Q7 j6 j
(if (< (car p0) (/ DR 2.0)) ; Trims the involute 4 g k! L3 u( G; I
(progn ' D4 x ]. f5 t; z8 k0 q
(command "CIRCLE" "0,0" "D" DR); Root circle
) l; @8 W, {. |* m) f(setq dist (- (/ D 2.0) (car p0)))
/ L) r. a- X6 ?: Z, r0 d(command "ZOOM" p0 8 R7 {. V+ z! ]. }; h3 n
(polar p0 0.6 dist)) 3 V) n. T4 L0 g6 p& B' N
(setq endr (entlast))
# X- ]5 }+ Q. k* D: F(command "TRIM" endr "" p0 "")
% {5 S5 `4 z* r! U3 H) O7 x8 x(command "ZOOM" "P") * z1 X! \6 y6 \5 c
(entdel endr) 7 k; C+ M. k7 Q2 O4 B$ s3 ?: ~" c1 m
(setq trimcode 1)
7 f: C: M* M9 H5 {' ]. y); progn
. G3 B& z8 |+ [/ z); if
3 e5 o: h% ^# h$ a1 }trimcode
3 k3 m7 V2 V- d8 E4 [0 e$ x$ L); ext-trim - g5 |$ D0 c! |6 h2 v
: h; Z# j' L8 G y& Y(defun draw-top-line (D DB N RO / theta-p xp yp alpha . [3 }. `& {: Z) d
beta tang angend inv-endpt lend)
+ S' s2 Y- r& f. p3 E- ]: B- W(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
/ c; I, r: o4 |% C( Sxp (do-x (/ DB 2.0) theta-p); This section ! g+ T9 H. m; x }6 `% ~
yp (do-y (/ DB 2.0) theta-p); sets up angles
7 x$ q% ~2 s6 ]7 i# O( @* ?alpha (atan yp xp) ; for drawing a
: |4 f$ v) ]1 q- X4 J+ X/ Tabeta (angle (list 0 0) (last inv-plst)) + w2 o8 r; R- F% r, }3 }
beta (- abeta alpha) ; line across the
9 c' Y, R4 b( z6 etang (/ pi N) ; top of a tooth
3 S* |: z' @4 V% }6 Z( t, ~angend (- (+ alpha tang) beta)
2 H% g8 t& H* H& |( v( x$ a) vinv-endpt (last inv-plst); This also creates + S" R+ h% P8 s, ?! {% r6 D
lend (polar (list 0 0) angend RO); the tooth
9 m" F8 ?/ u7 p S); setq ; thickness.
5 |- S, _' @& ^; L(command "LINE" inv-endpt lend ""); Draws the line 2 e/ q+ p0 s$ U9 C" v b, R
(redraw)
! a- w, p/ q# h# n(entlast) ' c |: I4 \3 s( u1 F
); draw-top-line 1 f+ u) C; ]9 G' p9 L/ |
. Q- E) |' I4 u1 U# D/ b(defun mir-it (cvent linent / pt) 2 T% K5 ^! B' @, v4 F4 {9 Z% M
(setq pt (dxf 11 linent))
# k9 M7 _0 ?# J$ E: v(command "MIRROR" cvent "" "MID" pt "0,0" "") & L. j- \# }+ w/ `
(entlast) 4 d# o' {% y4 {6 T' k# f% M
); mir-it
3 J8 H% M6 _; Q, T( `* F! X; }4 b, Y
(defun segment (DR N en / p1 p2 ang dist midp p0 pang / V: S" X" K$ t* N$ {
pang2 p p3 ent3 entl1 entl2 en1 en2) . R/ _( E4 v: _, g/ S
(setq p1 (dxf 10 en) " C* j! H* f& U2 [1 w
p2 (dxf 11 en) : L" e7 o3 k5 V7 t/ M
ang (angle p1 p2) O* z/ r3 u3 G' d: V
dist (/ (distance p1 p2) 2.0)
, f" u4 H+ w1 i, B2 `" Imidp (polar p1 ang dist)
$ @0 k( ~3 \5 S( B8 b5 }1 H( ep0 (list 0 0)
# B- L$ a4 C9 p+ e9 Q. v B5 vpang (angle p0 midp)
- Q& z& d- `6 d5 f# [" c# @' c* Cpang2 (/ pi N) 7 J" L, p* a0 \
p (polar p0 pang (/ DR 2.0))
+ r3 j2 [3 T$ L8 H( xp1 (polar p0 (- pang pang2) (/ DR 2.0)) 2 @( U, Z w. `! D# z$ H0 Y
p2 (polar p0 (+ pang pang2) (/ DR 2.0)) & |8 U6 J0 w5 `" p5 x5 `/ `2 m8 O
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) - ?9 j; t) `& g7 ~; Q; w
ent3 (entlast); This is the tooth p-line 4 }& D9 Y8 r6 O
); setq
* ~1 w) y% } w& N% K(command "ZOOM" "W" p3 p1)
5 x7 U6 l% s0 U! X" G- |1 `+ p( F(command "CIRCLE" "0,0" "D" DR) ;Root circle
* F. U$ {4 E& g Q(command "TRIM" ent3 "" p ""); Trim the root circle
0 k# D8 J' l$ a N/ E" B(command "ZOOM" "P")
7 j# s" F6 T+ n4 }1 j(command "LINE" p0 p1 "")
' _2 H/ p# i0 _. b+ ?(setq entl1 (entlast)) 4 H A5 s/ V0 z9 l( w
(command "LINE" p0 p2 "") 8 S8 S: T" N9 N$ A
(setq entl2 (entlast))
) Z) \, Z* p& z- W$ T' G Z(command "TRIM" entl1 entl2 "" p3 "") I4 C* h& p4 x- z
(entdel entl1) ! G! M9 D. l6 q+ t8 h2 g2 `! o2 K
(entdel entl2) % }2 c+ m I; G# `! ?0 h8 O" e
(entdel en)
4 E! B9 g' t9 G# _8 c' S(command "ZOOM" "W" p3 p1)
4 @" Y) Z& N( m(command "PEDIT" p1 "Y" "X") , |. ^( C' g: \: l6 O# O
(setq en1 (entlast))
2 a' S. J* K, l, i(command "PEDIT" p2 "Y" "X") 4 J) i* {4 H6 X8 ]
(setq en2 (entlast))
; [* |3 c: Q4 H' ?; t(command "PEDIT" en1 "J" midp en2 "" "X")
+ n) ?& D% L. V h! R, F0 s(command "ZOOM" "P")
: T" I, f: N2 W0 N8 @, R0 K(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") D( w- \, g4 N
); segment 5 Q, P; n, F9 S, O
. U! p: |. R9 Q(defun c:sg ()
) g2 z$ ~0 C, x+ N8 x(setting) # P" e1 r5 A4 \+ w
(spurgear)
4 F) _4 d! g2 V- ~4 I0 l: C: ]4 d/ ?(resetting) ! s+ @' D2 w& N2 c( l
(princ) % V7 b- A( _+ M: \6 | V6 ?6 Z5 E
); c:sg ; ~& X; |; A1 _+ D
' E6 \; }" M, h/ [; |1 J0 x(prompt "\n**SPURGEAR.LSP Loaded!") " _1 y# K4 v5 o3 J8 A
(prompt "\n Enter 'SG' to start") 7 H2 P! y0 f8 [% Y5 O$ y' g9 K& [
;;;end suprgear.lsp& [! ~7 s# S' T$ m
打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
6 e6 d" D( d% R. l; m1 e) z".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
8 ?1 B9 l. q! L# ]0 @: z/ i入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
