有下面一段渐开线程序：' {7 f$ `/ P0 H9 h- Z, s8 ~$ Z
;;;begain suprgear.lsp
. ?. m+ c& @- Y' P;************************************************* : p) Q' f' r# x# j
;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
6 _" ~' G; K, t;------------------------------------------------- : ~ n+ A0 v' [8 M: z8 V; H* |/ p
; This routine draws a spur gear using joined
0 h$ K! i# z3 A0 |; polylines. It lets you use any pressure angle
6 d3 l/ e; u2 y( P8 C* \+ `; to design the gear teeth.
. @& L9 ~0 q* x7 ]3 J2 I;************************************************* ' ?0 s* }9 Z" d, ~. f& `& c* D
(defun err (s)
( K8 J1 B, d! D/ d) p. a( P(if (= s "Function cancelled")
6 |* ~& C8 V! S# X6 U) `(princ "\nSPURGEAR - cancelled: ")
, ?. K; d7 r* i! ?& W( \( ~' M2 D(progn (princ "\nSPURGEAR - Error: ") (princ s) 5 y4 f& ?0 a9 t! r8 R$ t" c
(terpri)) 3 B) v2 r( ^5 F* e2 q" G
); if
( t% @3 N1 k+ k' k& ?2 d(resetting)
2 k: ]# Q( \/ [' P$ Q' e' L(princ "SYSTEM VARIABLES have been reset\n") 3 U7 T7 F1 r$ E% s* }8 i
(princ) ! K) y- r. V# r! C* B
); err
7 _5 v# J3 D9 x0 T9 |5 ~8 X6 v8 _ D2 z" c5 T
(defun setv (systvar newval)
! P1 `7 o" D s' y- {4 D(setq x (read (strcat systvar "1"))) 8 x: e j4 t1 |
(set x (getvar systvar)) ' x9 w% c i0 a' A5 h: O. z. F
(setvar systvar newval)
1 C4 l, }+ t) g' k8 `8 J, J h); setv
) F1 u+ ]: _4 x
$ o! w, L2 }) s# p: I(defun setting ()
7 M7 t2 y V- u* F8 M" W(setq oerr *error*)
1 F( @% o* \4 m( R(setq *error* err)
( Z& d8 r; ]& r9 F$ G! q; l(setv "CMDECHO" 0) & e- H+ }+ b( z
(setv "BLIPMODE" 0) " l3 A4 W$ }+ B! V
); end of setting : r$ t ]% e9 ] y, o1 l
(defun rsetv (systvar)
7 i" T6 B1 C) C1 Q) u& u(setq x (read (strcat systvar "1")))
" B% P9 p, P' Y5 m! o. b2 w# e(setvar systvar (eval x)) 9 c; m: B4 x% i$ v) _1 N: F: N
); restv ; I1 ~) a: ]0 g/ S v
(defun resetting () 5 A5 ^* V- E V
(rsetv "CMDECHO") 3 ~- \ w; F: Y3 Z I
(rsetv "BLIPMODE")
( F1 z% t7 P8 E2 m0 w5 n. p0 L(setq *error* oerr)
/ {: U0 Q/ N: i, j); end of resetting
; j# I' [( A- V1 l6 ~5 [ D1 p& d
9 @; u! e8 U) j(defun dxf (code ename)
% r. V3 U7 w0 j; ](cdr (assoc code (entget ename))) $ v1 O0 i) v7 }# R
); dxf 1 z) L; }7 k+ R0 J& j- i( z, V
% P l Y8 p! J! R
(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 2 h; x. T7 D2 ~, ?
trimcode invent p0 p curvent linent linent2 ent2 p2)
4 o; N: f5 w9 z& ]0 \(setq D (getreal "\nPitch diameter: ")
3 B0 O6 \! v. p# d" [N (getint "\nNumber of teeth: ") 5 U) l8 d6 ^( g5 [( ^6 S+ }
phi (getreal "\nPressure angle: ")
! h0 {" g3 T6 Xphi (* (/ phi 180) pi) ; Pressure angle q; F* Z) x D. b0 L5 T
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
0 i, v/ F- B9 u' @1 {: l1 oRO (/ DO 2.0) ; Outside radius
6 _& h& w1 E1 F5 O8 ~/ [A (/ D N) ; Addendum * c" @3 u/ D+ ]2 j1 v( U4 o8 Q
B (* 1.25 A) ; Dedendum 7 v; M. X6 D% j" z( H! g t3 B/ K9 _
DR (- D (* B 2.0)) ; Root diameter
/ i- M# r) M7 t3 g% vDB (* D (cos phi)) ; Base circle dia. : O3 q2 `& k" x6 B: X+ B$ ^
inv-plst (involute DB N phi);involute points
8 U5 L" V: m. M8 ~, H% `trimcode nil
6 ^) ^, _% o6 J- A. a9 B; k9 O2 x); setq
|( t# q. @0 O: _(command "ZOOM" (list 0 (- B)) , E9 E; X. Y2 W$ ~; e
(list RO (/ RO 1.5)) ( ]% i+ U( n- Z0 R2 b; ~+ Q
); command
4 ~1 V4 {2 B @" {# [- H(setq invent (draw-inv inv-plst)); Draw involute. ) w. G. k0 ?5 `% |5 e
(setq p0 (car inv-plst)
; @# e8 M# t( N0 D4 b5 jtrimcode (ext-trim p0 DR D);trim or extend
5 c" p. A) E$ p) o/ {4 m); setq ; the involute.
+ I( `9 d* Q i# q(if (and trimcode (= trimcode 0))
, c9 y0 s; ^' h' _( W(progn ; Joins the involute to the extension.
, w6 E$ F' f* G4 ~(setq p (list (/ DR 2.0) 0)) * y; X7 e8 Q; W6 D- O
(command "PEDIT" p "Y" "J" invent "" "X")
^: u5 d1 X' B(setq curvent (entlast)) % p, f# I% i- \' W. n
); progn
6 z' p' @( `; t, t( W(setq curvent (entlast))
; |' p9 Z1 Q" g2 [* i5 L( l; X- v); if
7 U. e" X) s$ X8 Y(if (null trimcode) (setq curvent invent))
/ s) A, B6 G [) d0 s- k" t(setq linent (draw-top-line D DB N RO)); top line. ( J2 O$ T B) e. r9 t
(command "COPY" linent "" "0,0" "0,0") ' I- \- O' U6 f8 p) L+ Q
(setq linent2 (entlast))
5 j/ e0 d3 x4 ?: C, N1 o) Q(setq ent2 (mir-it curvent linent)); mirror curve * t( B' l" d: i$ V0 J% K
(command "PEDIT" curvent "J" linent ent2 "" "X")
& k8 W" b$ @- ^( a9 q! F+ O(segment DR N linent2) ; Finish the job!
# Y9 [' m1 V5 }6 C: }" f(setq p1 (list (- RO) (- RO))) * N$ W% B+ D! \# K8 I- a# D
(setq p2 (list RO RO))
5 b+ y p3 _/ p(command "ZOOM" p1 p2)
" ^0 s6 @) d, J5 _ d# A/ G(prompt "\nConverting to POLYLINE, please wait...")
: `( y7 O8 ~& k(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
4 C# y* Y( i A6 q0 ~: H(prompt "\nAll done!")
3 h$ |2 Y$ L8 i: L) v); spurgear * J3 o. [- }$ `( X) @) G) X/ q. D/ o
d7 A' c$ X2 z) B# v
(defun involute (DB N phi / numer denom frac theta2max
3 b. a! C' t8 D5 }5 s9 ythetamax theta-inc theta plist RB xval yval p)
6 O. p' L4 A- [# N3 e, [(setq invfact 3) " W0 `6 k* i" L4 J7 B2 M
(setq numer (+ N 2.0) + Z9 s7 T( @. \* O
denom (* N (cos phi)) # j; W, g. u0 G
frac (/ numer denom)
9 ]4 ~) { ]( A6 Y0 f( @6 Ktheta2max (- (* frac frac) 1) 8 h3 d5 V5 N4 @) K2 z" |! \
thetamax (sqrt theta2max)
% M2 ]% P5 b$ q* |7 U- L: Vtheta-inc (/ thetamax (float invfact)) - }& a# T9 ]3 G ^4 |0 H0 {- _
theta 0
4 |3 a {# k& S: n3 P: P8 ~plist nil ; \ q1 I/ z/ n) g+ u- s' [0 P! k8 e
RB (/ DB 2.0) , Q+ C) S9 n: ~1 I6 W
); setq 2 d: ^" j2 g+ F% K. H N
(repeat (1+ invfact) # p# q* W, I/ `' {3 V
(setq xval (do-x RB theta) / ?6 V" h6 n/ `
yval (do-y RB theta)
' V5 `( h, l7 gp (list xval yval) % j/ s1 Q- L' z. `2 z
plist (append plist (list p))
+ A. l; {) S, ^- S); setq
, _* `# e1 [5 _: [% t4 {1 M(setq theta (+ theta theta-inc)) 0 L8 Z3 {, P, s" c1 ]- p
); repeat
! u0 r: {. Q% M7 Z3 ?' }# r" [5 Wplist
; V$ ^) |. \8 S/ r4 D z& l); involute
$ N- b% k; V8 m4 m! O
% I! R" F- {" ?: E. x(defun do-x (RB theta) 4 V7 j% R- S. K. M' @5 Y
(* RB (+ (cos theta) (* theta (sin theta)))) ; v0 u% u" a: A4 n( v8 b
); do-x 0 X- N- e) e% T' {9 Q
" z, \$ {" ?* g& {' d: o(defun do-y (RB theta)
9 G' ~6 t6 X* G1 J: n+ q- D(* RB (- (sin theta) (* theta (cos theta)))) & K2 @# ~' f: l1 j" c
); do-y : b- L* q+ E3 r8 W9 b
7 d% W7 ^( l# G/ M# @ P(defun draw-inv (inv-plst / dirpt plist p) 8 ]; I1 ~* ]" P7 r% A) E
(command "PLINE" (nth 0 inv-plst)) 1 |# N' q. d# ], x5 t
(setq dirpt (polar (nth 0 inv-plst) 0 1))
( e" q7 Q8 f9 K6 R7 q/ t(command "A" "D" dirpt) . s9 v; H6 p1 g) E3 ]& l
(setq plist (cdr inv-plst))
1 I" }* d" m7 }6 R(foreach p plist (command p))
. G7 }' |8 A# q% z; p3 ^(command "")
: h+ [+ s7 A# V6 e4 r5 v(entlast) : Z) g0 M; J9 b, B
); draw-inv # R4 l! E" S( p8 D0 T( `* M
& @, @) [3 e8 p- I8 h$ V b+ U(defun ext-trim (p0 DR D / trimcode dist endr)
% `: E, u. {" p1 _' g+ Q: q- R(if (> (car p0) (/ DR 2.0)) ; Extends the involute 9 K* Y, ]1 E) T9 b1 c- e
(progn # Y0 ?" p7 B& i* }
(command "LINE" (list (/ DR 2.0) 0) p0 "")
* Q4 V9 G$ u I7 s9 h(setq trimcode 0) 1 t% h) z* o# b! n. Z# M( t; P6 _1 n, \
); progn
% u# x. J( F8 @! q); if $ [- U% H* R3 e& ~ v, @
(if (< (car p0) (/ DR 2.0)) ; Trims the involute 9 p* U8 j* Q- g$ M/ k* G
(progn
) A4 q$ H* B" {(command "CIRCLE" "0,0" "D" DR); Root circle 5 C$ ^4 P6 z* ]4 |7 ^5 y
(setq dist (- (/ D 2.0) (car p0))) & z9 f( b7 x/ L/ |" \% G% B
(command "ZOOM" p0 9 m+ B8 P2 N7 e
(polar p0 0.6 dist))
, T* n! z' i4 m0 d1 w2 q(setq endr (entlast)) , F; x" r `, T) Z, a
(command "TRIM" endr "" p0 "")
% C$ g t& W* N# ?" j& l(command "ZOOM" "P") 8 j! G% j ]! O( }
(entdel endr) 9 x7 y! H) X8 ^* W' ^
(setq trimcode 1)
* G' _2 n8 f0 i5 g); progn . | x/ o2 k! p: x( f7 D
); if
- M& p# d! y9 U. w4 Mtrimcode
8 z4 ~9 s9 S) M# u: o" U+ h( ]: t); ext-trim
- m8 e$ i* A0 w. [2 r0 X8 V& @9 @2 o( n t1 k. @
(defun draw-top-line (D DB N RO / theta-p xp yp alpha : |- j& _* p& E6 t4 G: B! E
beta tang angend inv-endpt lend) ) F, i9 t! d7 X
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
- o5 Q3 k. ]2 s' ~' e* c$ ]$ V- U ~xp (do-x (/ DB 2.0) theta-p); This section / M3 |- ?5 t1 ]) y' K
yp (do-y (/ DB 2.0) theta-p); sets up angles
# F. a8 H0 z2 u3 X z. s6 f. A; r+ Zalpha (atan yp xp) ; for drawing a
0 b$ R7 K: d5 w* Labeta (angle (list 0 0) (last inv-plst))
* p+ v9 T9 l) A" d3 J/ q+ N& [2 v( Mbeta (- abeta alpha) ; line across the 5 ]7 i ^/ E+ B, ^/ H: V0 s! S i
tang (/ pi N) ; top of a tooth
) Q0 i d/ _2 _0 vangend (- (+ alpha tang) beta)
0 z' s; i8 B, ]8 O! s+ dinv-endpt (last inv-plst); This also creates
$ {4 `1 E. Z* ^+ I( nlend (polar (list 0 0) angend RO); the tooth
# k( e0 d' B8 T0 T0 j$ [' r5 A); setq ; thickness. 6 k; Y5 T" K# X8 n: \2 K: j1 x
(command "LINE" inv-endpt lend ""); Draws the line
$ t6 E+ ^5 a1 j(redraw)
+ c; Z$ T- Y" z5 K(entlast) 9 z; n( M; @' w+ J6 R
); draw-top-line $ l/ s: q( T" o8 A8 ]( J9 w
* c7 B, z: X* f+ m6 p: Q/ [
(defun mir-it (cvent linent / pt) - g5 O7 _# G; Q% s& k3 C) ~
(setq pt (dxf 11 linent)) / k# ]& q3 ~2 ^7 o# w, x) X
(command "MIRROR" cvent "" "MID" pt "0,0" "")
! }# l9 ~! N: O: [9 b(entlast) : u) { S U3 R" c. Z) o
); mir-it * _" G6 R; a2 i0 F. M
# n+ [& V3 b6 g, g) U
(defun segment (DR N en / p1 p2 ang dist midp p0 pang h9 L* w. z h$ q
pang2 p p3 ent3 entl1 entl2 en1 en2)
/ q8 B8 J5 S% D/ f(setq p1 (dxf 10 en)
9 s: M) ~" \' G: H3 @/ ~p2 (dxf 11 en)
. W" q0 c2 q$ M4 q- mang (angle p1 p2) 0 j# t0 s! m, S# V, x n
dist (/ (distance p1 p2) 2.0) 4 V+ t; A1 ]3 j I3 I. Z
midp (polar p1 ang dist) 3 C- I+ V2 M+ k- S
p0 (list 0 0) 7 a' E) `: R( a- P
pang (angle p0 midp)
: }% w4 s. b* l6 F9 W4 z! ?/ |' tpang2 (/ pi N) . L8 q% F# b3 k5 t9 J2 l
p (polar p0 pang (/ DR 2.0))
3 Z% E: q/ P3 W0 C6 rp1 (polar p0 (- pang pang2) (/ DR 2.0)) - b% f) e1 |! `) {
p2 (polar p0 (+ pang pang2) (/ DR 2.0))
0 S3 A+ i2 L, n, S6 J' G% Fp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) + s0 U+ x Z6 U$ a
ent3 (entlast); This is the tooth p-line 2 U# [. i ~! z; G" u- j5 u$ {9 ^
); setq
6 @/ S z3 s- t3 B(command "ZOOM" "W" p3 p1)
% U0 D$ `7 q C' A& U# p6 G+ |(command "CIRCLE" "0,0" "D" DR) ;Root circle
( `9 r$ k( m( A( V& z% n6 Z(command "TRIM" ent3 "" p ""); Trim the root circle
0 w/ ]. Y( _$ R; X* r1 i(command "ZOOM" "P") # E7 q9 h( H; T& ?
(command "LINE" p0 p1 "") $ }0 t% v' F A3 |7 Z0 F8 k
(setq entl1 (entlast)) $ z4 Y7 ~5 a! s5 m) R4 g
(command "LINE" p0 p2 "") " y7 n1 J" Z* z! p
(setq entl2 (entlast))
# Z) T% x+ x. Q: y) F(command "TRIM" entl1 entl2 "" p3 "") q1 x% V7 j7 K1 A0 g
(entdel entl1)
, Z1 s) o/ U; l2 o) L8 [3 N$ V(entdel entl2) / a p9 y5 `/ }0 s6 {* @/ H: F3 ]
(entdel en)
( g$ q4 t+ `. K2 E(command "ZOOM" "W" p3 p1) - P3 ]5 |8 l6 O) G* S
(command "PEDIT" p1 "Y" "X")
. B9 `/ L4 Y- i; v% Z) A(setq en1 (entlast))
$ R/ o7 E/ R9 u" k. {(command "PEDIT" p2 "Y" "X")
& z7 J6 N1 w& s) H(setq en2 (entlast)) O! ?; h5 x! l& J. H0 z, t
(command "PEDIT" en1 "J" midp en2 "" "X")
' ^2 k. g* d) P$ L- N( \(command "ZOOM" "P") - I* W u3 C- X& C* h
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
# ^4 {: H, f5 [$ e9 l" }); segment 7 j, |, @4 ?- p: j% h/ t: h+ g( w
; E; M9 g, Q8 u4 R3 |$ m; P
(defun c:sg () % {, _* w9 B! X+ u* N8 g& \
(setting) % o9 p* f# R( a+ e
(spurgear) 5 V/ G1 M |; |- `
(resetting) 9 H# |1 u& b I9 b' [
(princ)
, y7 R& S& b- N' v7 G6 n& C); c:sg 0 @6 A0 m. L$ L5 Y' t: R; U
4 Y: e) y, C' [6 k7 n7 ~8 ~8 {5 Y
(prompt "\n**SPURGEAR.LSP Loaded!")
3 \2 @( h* L) [' R7 w% Y3 w5 A% {(prompt "\n Enter 'SG' to start")
1 v( U+ W: M1 m;;;end suprgear.lsp
5 S g; }) H% v4 }% [! }, [打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
! ]' ^: _5 s- D5 c; z".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
( [- G6 d% i+ V$ B7 j入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
