有下面一段渐开线程序：. X' U& N$ P6 |8 L
;;;begain suprgear.lsp
k5 E; t% ?2 X1 v: O& q;*************************************************
: {% m8 T# h5 h;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
* }( A. m* X/ z;-------------------------------------------------
3 s% n/ O+ e6 v' d8 p+ S" B; This routine draws a spur gear using joined
3 l# @* E& X+ i; polylines. It lets you use any pressure angle ; P' ]$ y7 |, @- |
; to design the gear teeth.
% l0 v1 a. U( E) i% w8 _7 X;************************************************* # I( W7 T4 r, b0 R+ ~
(defun err (s)
5 T. M% t( k5 y(if (= s "Function cancelled")
/ n: n. x' w( e(princ "\nSPURGEAR - cancelled: ")
- J, Y" z \* [1 X(progn (princ "\nSPURGEAR - Error: ") (princ s)
+ k' j) H. h# {7 P: `8 \(terpri))
# X. |+ z3 E) {$ M); if
$ C4 f# P# V) G: k0 Q(resetting)
( Y7 Y/ \# Q& h9 _0 r, E; k(princ "SYSTEM VARIABLES have been reset\n")
/ f$ l. B+ K( o/ Q* w(princ)
7 v; a1 j6 P9 s' s: u6 e, a/ `); err x* w! O) |# Y
4 W; M4 x# p8 O ]. Q(defun setv (systvar newval) 4 ]! h) _9 y$ I: K5 w
(setq x (read (strcat systvar "1"))) 2 N) G8 j6 U* _2 K4 p' W
(set x (getvar systvar))
7 B6 d3 Z8 r( s$ T& i(setvar systvar newval) & Z e2 l9 N3 D, _2 |
); setv " r9 z3 j! |7 k2 w# G- N% k
& c9 ?9 a N- ]3 g" }1 y/ M(defun setting () & e2 S- }! h0 v/ q! G& [5 u# B
(setq oerr *error*)
$ @$ ]% a8 g+ W- q F p(setq *error* err) # y1 t$ A% k, h" M8 i
(setv "CMDECHO" 0)
/ n0 k. y- l- `3 T(setv "BLIPMODE" 0)
. ^0 P1 t5 j2 ]5 G' B, d); end of setting
) [: c+ a- a' J( ^( Q8 R. _(defun rsetv (systvar) + c) _0 u5 O& j$ W8 l
(setq x (read (strcat systvar "1"))) # [. l4 P4 B* r$ A k& E/ ^2 b
(setvar systvar (eval x))
3 X! z1 i/ q* O: V2 _1 m7 L); restv
/ j& k2 K) w. W; Z+ J8 t(defun resetting () . F, G( Q1 e7 @' v$ H$ ?
(rsetv "CMDECHO")
) U5 O1 {( Y- G; [6 N/ J(rsetv "BLIPMODE")
' K { H' k4 h/ b. i3 f(setq *error* oerr) . ^+ e A! I: m
); end of resetting
6 t0 @' y/ Z- u( n4 {& { H0 v
- ~. ^& Q# V7 z' G4 f' O. R(defun dxf (code ename)
- n* i0 Q }1 f(cdr (assoc code (entget ename))) 6 ]# f3 F4 s. W. {7 T# e& Q( y
); dxf
. n& K+ w: y, G
& @/ h$ [. m# a5 X2 s+ s' B(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
5 B4 i5 t+ g. _# v2 utrimcode invent p0 p curvent linent linent2 ent2 p2)
# A$ t- G6 \# D- K: j(setq D (getreal "\nPitch diameter: ") 8 F+ U% M" }2 ~2 O3 r) B
N (getint "\nNumber of teeth: ")
2 B3 I' P! h+ d4 d; J5 k7 z4 Jphi (getreal "\nPressure angle: ") $ |3 J7 x5 F# K. y& q' J2 w5 v
phi (* (/ phi 180) pi) ; Pressure angle
, _0 \1 h& p/ `! P/ ~4 N2 `1 q ?DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter , Z c8 v; I9 ]& @/ J9 B5 u
RO (/ DO 2.0) ; Outside radius
9 b/ b6 ?* h) J: ^- E+ N bA (/ D N) ; Addendum # h$ K3 [- E) n$ D4 C
B (* 1.25 A) ; Dedendum + s8 N; |" V* @& r+ |6 }# x/ y
DR (- D (* B 2.0)) ; Root diameter # }3 m& H7 n+ o
DB (* D (cos phi)) ; Base circle dia. . m0 T' W ]( X6 F0 {! Z2 J
inv-plst (involute DB N phi);involute points
0 r+ f: \2 ~/ s) o6 Mtrimcode nil 2 `( O6 Q. l, W: |1 e. a
); setq 1 B) l+ y( L1 v
(command "ZOOM" (list 0 (- B)) 6 L: R5 G% ?/ ]1 m! }' E! k
(list RO (/ RO 1.5))
' i& g6 U4 r2 u j( A' r& J* X% E); command 1 Q$ Y* n' ~8 Z' x" ^/ W
(setq invent (draw-inv inv-plst)); Draw involute. 0 U% E' B4 {2 h. M
(setq p0 (car inv-plst)
4 o; J' b2 h3 J7 }9 Htrimcode (ext-trim p0 DR D);trim or extend
; ~( m W/ w6 I1 {) @5 [1 w); setq ; the involute.
1 {5 c) j2 M7 H/ K# E4 h+ W(if (and trimcode (= trimcode 0)) 6 a6 I3 L! f% G- U7 v
(progn ; Joins the involute to the extension. # c( _9 K* M$ s" E* S
(setq p (list (/ DR 2.0) 0)) # p8 ~! o S9 m3 x- u& l) f
(command "PEDIT" p "Y" "J" invent "" "X")
: C( L9 x/ @1 \# E, Q3 G(setq curvent (entlast))
1 q" N* ^; c x$ l$ }/ f/ I: ~); progn
. K Z. w* ^& \(setq curvent (entlast))
' N& n" y2 m7 n# o9 V% a/ h) [); if ( |3 m, P \7 p8 G% _ c4 q( v9 W
(if (null trimcode) (setq curvent invent))
6 `/ D" S: E0 ~( Z: c(setq linent (draw-top-line D DB N RO)); top line. ! }& _& f& m) O/ H$ k( M, m2 L
(command "COPY" linent "" "0,0" "0,0") : I, z. b( V* E
(setq linent2 (entlast))
% ?' }3 z& D4 T8 ^# `; }(setq ent2 (mir-it curvent linent)); mirror curve
G3 {. a/ z: ^4 [6 v6 U+ g$ T(command "PEDIT" curvent "J" linent ent2 "" "X") 0 F% H( U, B2 x2 @$ K1 V
(segment DR N linent2) ; Finish the job! 7 V3 h- j/ O, }! i% ?' `6 u V
(setq p1 (list (- RO) (- RO)))
$ I. P( ~2 a7 W6 c0 T" ?(setq p2 (list RO RO))
9 l5 m* U* e( a* Y5 Z& ~- t(command "ZOOM" p1 p2) - @8 _# n3 s5 x u6 V4 l* C
(prompt "\nConverting to POLYLINE, please wait...")
$ m) }7 G: X. D/ a(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
! O/ w% D. S* N5 \/ T- X: Y$ e(prompt "\nAll done!")
. C& U# @; V" ^/ g4 L7 A); spurgear
) M+ s) E" K# q8 M3 _) O% O& J4 t; y$ w
(defun involute (DB N phi / numer denom frac theta2max & _2 ^+ A# X% B# b' i
thetamax theta-inc theta plist RB xval yval p) & ~- x% l3 ~ D+ g% \% ^ w! A
(setq invfact 3) 0 a4 r, v" D5 V4 {* ?& A
(setq numer (+ N 2.0) ( ?8 p+ M' K- U! q/ v* R4 x& b
denom (* N (cos phi)) * E5 s5 {! p, ?3 M9 o1 L q2 a; W, u
frac (/ numer denom) 8 q* }! o! `( h( G9 T& L
theta2max (- (* frac frac) 1) ; Q4 c7 D5 Y2 j+ h u; T) J/ C
thetamax (sqrt theta2max)
$ o; `, u. B6 Z3 d5 htheta-inc (/ thetamax (float invfact)) ! D* Z2 }/ d3 z0 L3 E
theta 0 2 M/ \3 t6 D1 o, P
plist nil - X7 e+ v f" H* N
RB (/ DB 2.0)
3 C' p& I- R. y# a( Q5 v) q); setq " Q8 @! v3 S8 s
(repeat (1+ invfact)
8 s7 u$ N1 H. q' Q$ E(setq xval (do-x RB theta)
' ~5 c3 F9 R( \8 V: V& F" Dyval (do-y RB theta) ! {$ p# q& x/ t; G" ^0 ?
p (list xval yval) & I# O. M4 C. K! j8 T. x5 l! w
plist (append plist (list p))
( _6 ^- c5 j7 f& U" ]); setq + F9 }; k1 D w7 W4 R6 B
(setq theta (+ theta theta-inc)) 5 l( r7 I! s/ K J% u2 M
); repeat {# T! }; v4 s; B2 u% D
plist
+ }% F+ H7 r! G. d- b); involute 5 D- f9 ^; { \0 [
/ V6 u2 ?8 z4 u' E0 u6 D3 c0 r6 ?(defun do-x (RB theta) " N; y1 D9 u t/ x
(* RB (+ (cos theta) (* theta (sin theta)))) * T- t' P7 x% P- C
); do-x ! w. g8 j7 X5 e+ ~1 R; W; k0 H% s6 W
8 M8 O8 ], G! x(defun do-y (RB theta)
% Y1 P+ i+ i# S" A9 W1 ^6 j(* RB (- (sin theta) (* theta (cos theta)))) , Q) b+ x. T/ W
); do-y
3 o4 a4 l. N/ z8 ]$ t |0 }2 I( n4 ~3 g* n
(defun draw-inv (inv-plst / dirpt plist p) $ E" ~3 B: q- k
(command "PLINE" (nth 0 inv-plst)) + A+ M4 H- k- T# e; P* `
(setq dirpt (polar (nth 0 inv-plst) 0 1))
* q8 \; E0 R$ B8 ?! R(command "A" "D" dirpt) 1 t# _' i C! K; @. A
(setq plist (cdr inv-plst)) + R; k0 l' c+ o w( C# C1 e5 I
(foreach p plist (command p)) }1 o4 P, Z4 ~$ \5 w
(command "") - G" R: e: p8 [, U. B
(entlast)
. v9 r# Q. m+ f; j( M, j, I; I- o); draw-inv
% b8 E- |) e$ e' n
" j$ A- y# Q4 W(defun ext-trim (p0 DR D / trimcode dist endr)
/ v$ A. y7 n4 q: S(if (> (car p0) (/ DR 2.0)) ; Extends the involute
6 ]" t6 l( e+ g' g! J(progn
3 N6 X: O$ c7 n7 e(command "LINE" (list (/ DR 2.0) 0) p0 "") 9 M( ~' i! f; S5 l9 t2 u
(setq trimcode 0)
% g: ^2 Y! J% p8 T); progn
& a- A$ ]/ n" u6 Q2 H2 c); if . s2 ^" v* W9 A* e
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
3 W4 W2 Z5 w, `$ a. z* ]! R(progn
; r. m K' ~4 |2 ?(command "CIRCLE" "0,0" "D" DR); Root circle
( d& Z4 U7 s: N9 A( `5 V2 _! V; x4 v(setq dist (- (/ D 2.0) (car p0))) % Z& _0 A9 Z X5 u+ f ^# I
(command "ZOOM" p0 - W0 W; ], g: E$ l8 F( m
(polar p0 0.6 dist))
$ j* y6 K: r5 [" v6 e7 j3 W+ O(setq endr (entlast))
4 i" |3 \! A+ l; K Z(command "TRIM" endr "" p0 "")
V @) W5 w: X+ ~" ~1 n" Y' a) q- s(command "ZOOM" "P")
3 }/ ^1 e0 u$ P8 `/ o- Y(entdel endr)
# h$ E8 J/ I! F(setq trimcode 1) 3 ~& J8 S( O8 d" K! r j1 t& o* s8 W
); progn T( b H; h, Y4 u- R3 x" g2 Z
); if
) ]/ L+ M& I1 m& r/ Qtrimcode & R- P; j6 f0 o8 _3 l
); ext-trim
- _( a3 }% M8 L; ?4 @+ p
2 v( E( P9 C) H- M(defun draw-top-line (D DB N RO / theta-p xp yp alpha
) D0 w! N' R gbeta tang angend inv-endpt lend) & V( @0 ^- g+ e/ {& u; T
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) ) H9 s' d+ I: V1 A: w& G8 Y5 ^) n) H
xp (do-x (/ DB 2.0) theta-p); This section
; ?0 R- X6 K5 H& }7 typ (do-y (/ DB 2.0) theta-p); sets up angles
/ q& `# _4 I2 `) Q+ z, Xalpha (atan yp xp) ; for drawing a * T! u* A8 W4 `% }* z3 a
abeta (angle (list 0 0) (last inv-plst))
+ B. M" \7 B7 G5 z6 V1 q- p% [- fbeta (- abeta alpha) ; line across the % q4 U. t I& s; O; q' L; p
tang (/ pi N) ; top of a tooth ' s N* M; B F# {
angend (- (+ alpha tang) beta) * E0 i& c$ T0 U: j# M' [
inv-endpt (last inv-plst); This also creates ; }8 i" O0 Q3 ]
lend (polar (list 0 0) angend RO); the tooth ( h3 g) M4 X v
); setq ; thickness. 8 a( c) A! ^! H8 v( U" \
(command "LINE" inv-endpt lend ""); Draws the line 8 _, C- N! C F1 x: M2 @1 H! S5 i9 v
(redraw)
3 a5 u4 [8 f5 }# i) L; ~(entlast) + b9 n) I5 q- C; {4 ~# p
); draw-top-line - s) P0 t7 Z) |) {: |1 Y
$ H6 C" Y7 P) X: ~(defun mir-it (cvent linent / pt) * J; ~# z9 Q! W. j# Z
(setq pt (dxf 11 linent))
* |4 O. B/ e4 u5 O(command "MIRROR" cvent "" "MID" pt "0,0" "")
6 `5 J- Z2 p5 c Y; z+ Q- ^(entlast)
6 j* d* U$ e5 `); mir-it s; e6 R) p) q* V1 N r2 g2 ^' E
3 k! e; C1 j& [) q7 ^0 _3 ~8 m(defun segment (DR N en / p1 p2 ang dist midp p0 pang
' o! Z0 t3 k }pang2 p p3 ent3 entl1 entl2 en1 en2) " U* a9 T0 W! ?! s, N' c- e) x; A
(setq p1 (dxf 10 en) 3 N; V2 k5 Q/ B3 \
p2 (dxf 11 en) 5 l: a( e& w; g |% | j
ang (angle p1 p2)
* @' m/ Q. N) V9 I' ]0 ^4 [dist (/ (distance p1 p2) 2.0)
6 V" o' @# q+ Z: X+ J5 Y$ qmidp (polar p1 ang dist) # }& \5 s6 }# C$ }4 J% g" d
p0 (list 0 0) . r* n" J( a: G* W& f
pang (angle p0 midp) + V/ j+ h: v5 ]; n& @, W
pang2 (/ pi N) : G2 w) V- G$ d6 t2 h ^9 w
p (polar p0 pang (/ DR 2.0))
$ n3 p" m1 A4 Q( {p1 (polar p0 (- pang pang2) (/ DR 2.0))
- c+ h; b3 [4 C1 q; _7 hp2 (polar p0 (+ pang pang2) (/ DR 2.0))
1 `! E1 P* }6 g/ E3 v) b- P" vp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) 4 X6 \( e H7 l. R( v7 [8 B
ent3 (entlast); This is the tooth p-line
# G9 J3 H% B& |); setq + R1 M6 c9 }/ c( U
(command "ZOOM" "W" p3 p1)
. `# t, T; B) t% k(command "CIRCLE" "0,0" "D" DR) ;Root circle - q2 G& z3 O: [
(command "TRIM" ent3 "" p ""); Trim the root circle
; b% C& S8 \( A9 o7 a) h(command "ZOOM" "P")
: ~) s9 _3 V @(command "LINE" p0 p1 "") ) G+ U+ @3 \" M, l) S; b- k4 P% U* K
(setq entl1 (entlast))
! i3 H& h2 t7 Y0 `$ Y7 ~(command "LINE" p0 p2 "")
( k6 D$ m9 o5 _( M! l(setq entl2 (entlast)) / R5 I' }$ s" c% _* A: o1 H
(command "TRIM" entl1 entl2 "" p3 "") 8 p% e) V, w# m+ u" }- y8 Y
(entdel entl1) 5 T5 \. C* W! N) a8 ~$ ^& ~
(entdel entl2)
5 H8 A7 m6 O6 u. V8 x3 Z& x(entdel en)
) q- V; L, G! T! C- L(command "ZOOM" "W" p3 p1) " T% T2 b a$ p5 \
(command "PEDIT" p1 "Y" "X") 5 G: r2 D1 ?- A. V" r; q+ ]2 |) D
(setq en1 (entlast)) 4 q" l9 l# t C( M
(command "PEDIT" p2 "Y" "X") 7 i. |6 v& F' ]+ h! J' h
(setq en2 (entlast)) 4 c# g4 S, R& H! [) h: R3 X
(command "PEDIT" en1 "J" midp en2 "" "X")
/ C' Z9 w% d; `8 n(command "ZOOM" "P")
5 w* E# A$ Z+ J3 O t' g(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") ( v9 f2 A5 C* I) @3 j
); segment
$ n$ t) s, q2 w2 k* }- W
+ L6 U. K% q- u# x! Z9 B& C- z(defun c:sg () # L0 r% `/ N3 W/ p7 C
(setting)
1 @1 x! A* { a) L! [(spurgear)
2 e3 e4 ^3 v9 f1 j6 g(resetting)
6 Z8 ~! w, r8 T6 S, r) B& b(princ) ) b! z( ]9 X# d! Q4 N
); c:sg
, ]& y7 |% Q1 m+ n. o, m: Q" c! v
(prompt "\n**SPURGEAR.LSP Loaded!") d1 l8 z6 X- u1 c' n, @
(prompt "\n Enter 'SG' to start") + w5 [7 O; q; V# O) F
;;;end suprgear.lsp
3 X I( u @# k) D) e W打开CAD图形后点击“工具”菜单→AutoLISP→加载→找到自己所存的
4 |/ O! E) \* v$ W3 a m3 O9 z".LSP"文件位置点“加载”、点“关闭”。在CAD环境下“命令”状态栏里输
9 d# v3 n& ]/ V0 ^入“什么”命令后才能按提示使用? |
发表于 2007-10-20 03:42:53
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