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以下就是齿轮渐开线的程序代码，唤起命令是“SG" 怎么加载忘了。4 g/ y6 j7 U! F5 T# _" E, |
;;;begain suprgear.lsp
$ B7 Y5 K$ A7 r0 l;*************************************************
: R( x! A7 m8 E* v- N3 w;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
1 h% B0 P1 O/ ~;------------------------------------------------- ; S! u! z; O+ ^% C
; This routine draws a spur gear using joined
5 u: C2 Z- @5 `- y. M; polylines. It lets you use any pressure angle # c. |+ U( ?) D9 ~: I' g9 O
; to design the gear teeth.
) F @+ j/ ?2 i L;*************************************************
R, s: C, l7 h4 y3 {' @. ?(defun err (s) b0 l! M! {( z" K$ [3 U
(if (= s "Function cancelled") ) L4 p2 J3 M/ e
(princ "\nSPURGEAR - cancelled: ") ; y; d+ P5 N" p6 `: L/ h
(progn (princ "\nSPURGEAR - Error: ") (princ s) * @/ j( C. }, o( j3 ? L& l
(terpri))
. u- a; c1 m0 v7 d& ~0 \); if & n; g' l% ~' _% C# r5 a" o
(resetting) % o9 R M; D; N7 F+ d) ~
(princ "SYSTEM VARIABLES have been reset\n")
L* F% G0 x6 S; X0 ?! _$ d(princ) $ N! N" D0 h8 w% ~
); err . l. a! v) ~! e3 v6 y4 s7 a
- l' ~) e/ J/ u(defun setv (systvar newval)
% ?( Z) I/ D: Q(setq x (read (strcat systvar "1")))
# C c: r, c- A5 | y6 r2 J! H& F(set x (getvar systvar)) c2 I/ ?! D( A8 i5 ~% z
(setvar systvar newval) 2 ~! I, ~3 d t' y) h; p/ E- [
); setv
7 D2 G# ?2 ^ u+ a- D
9 J5 j! P' P' [ Z$ A7 j(defun setting () - a' `6 s h# m2 j7 p; }* J
(setq oerr *error*) 4 l4 k% \9 p/ u1 f' Y; u& k& G
(setq *error* err)
& Y% i; w. E8 e( t& s(setv "CMDECHO" 0)
3 z# w1 w m8 I# O: u(setv "BLIPMODE" 0) ! t# ^$ f5 o: k1 `# B5 u4 G1 H8 B
); end of setting
% g- G6 u$ `# I; K(defun rsetv (systvar)
3 C8 O8 c* \7 x3 K' J* f/ p# j& y(setq x (read (strcat systvar "1")))
1 s! c# D, o1 I: f1 m1 z6 s(setvar systvar (eval x))
: \' f' B5 p5 a) X( x7 S) N); restv
8 K ~% c1 Q" ~' `+ P(defun resetting () / b7 ?+ i! F' s2 M" I: B
(rsetv "CMDECHO") / c& V3 A) }4 } C& V: `
(rsetv "BLIPMODE")
( h/ r! q3 e* U* a(setq *error* oerr)
/ i+ w2 z2 \" U# L% ~$ z) Q# _); end of resetting : p& Q* e0 K, M& u( N3 w, z
% P. }+ l+ j; D$ n) J7 U6 x
(defun dxf (code ename) $ C1 ~9 B* `' @8 b z
(cdr (assoc code (entget ename))) ' s& n* L; r8 m, `
); dxf
$ k, e. b. r9 q. ^4 s. X9 \$ c
/ A) @( @4 ~0 i8 C(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
* Y: h& Y9 X, Btrimcode invent p0 p curvent linent linent2 ent2 p2) / n# D- ^- ^( z9 Z
(setq D (getreal "\nPitch diameter: ")
! A7 D8 m' Q1 hN (getint "\nNumber of teeth: ") + x. o9 @3 g+ t
phi (getreal "\nPressure angle: ")
3 T$ P/ S! h& J, f! t" Ephi (* (/ phi 180) pi) ; Pressure angle
* Y4 i; F# z3 e7 ^7 P: e6 IDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter
; Q' Z; t7 P! J7 N2 }: n& P& URO (/ DO 2.0) ; Outside radius
2 e" n7 Q. A/ U/ i9 b. WA (/ D N) ; Addendum
; {8 a3 t4 w# @( q$ VB (* 1.25 A) ; Dedendum
! C' X& q; B% z3 c4 r9 k1 |DR (- D (* B 2.0)) ; Root diameter
% b* m* b6 {8 _) m: {DB (* D (cos phi)) ; Base circle dia.
! [! s! E) g- ^* iinv-plst (involute DB N phi);involute points
/ \9 ~9 E# M- ytrimcode nil
! J9 J& Z+ ]/ A) g1 t \); setq
4 h/ h; d: m+ T3 w7 Z, D# z3 I(command "ZOOM" (list 0 (- B)) / Q4 t' A! |. Y- u- L1 D
(list RO (/ RO 1.5))
( m( |3 z/ A- d2 X5 e! k' p); command 9 J0 _3 `; B9 | a5 A' G. n
(setq invent (draw-inv inv-plst)); Draw involute. , H# b. n+ B- \- k# f1 m: K
(setq p0 (car inv-plst) 8 ~: v+ |, @% Q/ M9 t
trimcode (ext-trim p0 DR D);trim or extend # a% R2 W9 X$ U; ?
); setq ; the involute.
1 W+ d t1 w5 ^( V+ t7 e(if (and trimcode (= trimcode 0)) 6 D$ C* Q; D, q6 g
(progn ; Joins the involute to the extension. 8 X+ j! `' n: G3 X
(setq p (list (/ DR 2.0) 0)) * t; Q: _1 e- s% [, ?3 E/ _' u4 h
(command "PEDIT" p "Y" "J" invent "" "X")
+ }# y0 Y& T0 s# C+ {(setq curvent (entlast)) : G3 [ R. E. E# p6 b
); progn
% l& ~' E( {' k7 P* E# L- n; G(setq curvent (entlast))
& G" j: b) n+ W+ P4 H); if R6 i3 h# k4 w$ A/ W- \' {
(if (null trimcode) (setq curvent invent)) : e/ T0 U" o4 l% l
(setq linent (draw-top-line D DB N RO)); top line.
/ I, U& f* n) l: m8 A. |(command "COPY" linent "" "0,0" "0,0")
1 z( E1 u5 Z. d; q: P(setq linent2 (entlast))
% D0 N- Y/ ]. L9 b# E( @* {(setq ent2 (mir-it curvent linent)); mirror curve 9 d/ g3 B* ~4 D9 g
(command "PEDIT" curvent "J" linent ent2 "" "X") ; @( f( g+ |3 s0 J* Y" |
(segment DR N linent2) ; Finish the job!
( [2 I$ R1 | m @/ [' H(setq p1 (list (- RO) (- RO))) * ^1 A3 F' j( k* Z9 W0 f
(setq p2 (list RO RO)) 0 L2 v0 N1 D9 i* w
(command "ZOOM" p1 p2) 9 {- p) J" z1 e; N( ?2 R
(prompt "\nConverting to POLYLINE, please wait...") % e$ g' W4 q' z3 e
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
M, ]% O% b5 `* ?4 }. `, s(prompt "\nAll done!") % y8 N# [, p- u i1 N- \
); spurgear
% P5 X! K3 a, }! G) q( r+ r( ^ J
(defun involute (DB N phi / numer denom frac theta2max ) {# ]4 z/ e: c) P; r2 ?" _
thetamax theta-inc theta plist RB xval yval p)
3 @$ G, ]" Q! F+ ?(setq invfact 3) ' x" I- A2 F$ p& A0 i* E3 L
(setq numer (+ N 2.0)
3 N* c! w$ z9 @0 }denom (* N (cos phi))
6 }, O/ q* ]4 p6 V: Ifrac (/ numer denom)
" q) q3 t3 {7 \) a Q& F- wtheta2max (- (* frac frac) 1)
$ x$ K0 U) |# ~) uthetamax (sqrt theta2max)
. ~' @; j7 N7 l. Otheta-inc (/ thetamax (float invfact)) : \; `& N) N( j0 {- N3 `
theta 0 1 C0 y; R. F4 g0 r1 L; V- C
plist nil
' t' c/ c" r; rRB (/ DB 2.0) 4 I$ I+ }& x# [& D
); setq ) B+ S) n$ i' D# m9 G5 R
(repeat (1+ invfact)
1 g/ R$ | Y# Q4 J: D(setq xval (do-x RB theta)
3 A* z$ }! c9 [7 [# Wyval (do-y RB theta)
: |& l7 C d/ ip (list xval yval)
' e" J5 P, B8 z% n: M4 q1 d uplist (append plist (list p))
6 [; H- O m6 d( ^2 ^); setq
* {8 n9 L0 J' [% ^! \(setq theta (+ theta theta-inc)) 1 ^* O ^- p" O, B% n1 p( q; x
); repeat ( b6 H( y( r/ N) U
plist
1 N( U/ [4 `/ j); involute ; h& j) D5 B2 U4 O, g. k$ z
( o% o% a% D6 K, V1 @1 i(defun do-x (RB theta) " p+ H+ d/ t* {3 S& d
(* RB (+ (cos theta) (* theta (sin theta)))) " d6 u; s# R2 Z8 a
); do-x
7 ~* C2 Y2 {4 I3 j W) |5 Q% s
. N1 E4 [* G+ t6 H(defun do-y (RB theta) , }$ \/ x4 V% |" o
(* RB (- (sin theta) (* theta (cos theta))))
, i* T* j l& B, X9 I8 a); do-y
7 G1 i& a# m: c% g4 `- Y' h$ K5 d% Z4 g
(defun draw-inv (inv-plst / dirpt plist p)
1 h A- ~# R& l" }* V$ I! Y- I8 h(command "PLINE" (nth 0 inv-plst))
. g5 o* P' F+ y X(setq dirpt (polar (nth 0 inv-plst) 0 1))
4 R X) Z! X3 K5 Z3 ](command "A" "D" dirpt) u2 W* T6 b+ `. B
(setq plist (cdr inv-plst))
, ~, ?) z# S+ J(foreach p plist (command p)) / ]& u! }1 b- i; h: J+ B; a7 }9 Y
(command "") 6 X; Y k7 N) M* G, {
(entlast) . M3 ^: s2 V3 q; s
); draw-inv
) D; ~) o7 d/ }. e% M
/ V. ^3 v$ K& u$ L7 a(defun ext-trim (p0 DR D / trimcode dist endr)
& \ z' w/ u" l9 {& z(if (> (car p0) (/ DR 2.0)) ; Extends the involute
; ]- P5 R/ ~, q; x(progn 0 f: ~; J! q8 j- ]& v
(command "LINE" (list (/ DR 2.0) 0) p0 "") ( b, M3 B3 V) P# y/ x6 x3 I5 ^
(setq trimcode 0)
' ^7 G" v4 z& R6 d0 e- B O6 W); progn
- J, ~2 `9 M" M1 X7 V); if
, C; f! y' K: v* e, J(if (< (car p0) (/ DR 2.0)) ; Trims the involute & R0 y; L, W; E6 |
(progn * E; |" d* C2 F, l7 B2 k* d
(command "CIRCLE" "0,0" "D" DR); Root circle 2 n( d9 L$ a. P1 M) Z
(setq dist (- (/ D 2.0) (car p0)))
( [. r( G2 H- |2 N(command "ZOOM" p0 / ?* [1 R2 ^1 u& x3 b+ |
(polar p0 0.6 dist))
3 x) O I, P0 G% ]% P(setq endr (entlast))
% g' Q, i7 O9 d+ z2 Q$ G+ I; X(command "TRIM" endr "" p0 "")
8 k1 n; x5 k4 Q8 v(command "ZOOM" "P") ( O, w* r3 l& J/ i5 q |
(entdel endr)
8 z* R+ ?7 }) \& K(setq trimcode 1)
! w) I Y @4 \1 [) M9 v); progn
0 m Q) M3 a' s; g8 j. S); if [9 X1 q6 b8 R8 x* h& |; }0 x8 D
trimcode , L* c+ @: ^8 ^7 P; _' g
); ext-trim 4 S: a; i5 v- p
/ K' R8 S* T S! e7 O
(defun draw-top-line (D DB N RO / theta-p xp yp alpha / Q, z! q& W/ S% K/ U4 d
beta tang angend inv-endpt lend)
6 x" O) w1 p R, D1 i& u9 \(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
- {4 y3 E+ [% e, h4 y- gxp (do-x (/ DB 2.0) theta-p); This section ! T* z- H% U: g- t: u
yp (do-y (/ DB 2.0) theta-p); sets up angles
4 M+ D, s( d- v" Falpha (atan yp xp) ; for drawing a ' S' n; M" F6 X& L
abeta (angle (list 0 0) (last inv-plst)) ' j s$ ? |1 N, |. U5 u& x
beta (- abeta alpha) ; line across the
9 f2 g/ ^. c }+ q6 \tang (/ pi N) ; top of a tooth
9 f3 H9 O6 o8 [1 _. Y+ i1 Q$ Jangend (- (+ alpha tang) beta) $ q, G: w1 y- [( @
inv-endpt (last inv-plst); This also creates
9 |3 n% n, h& c3 R3 a# C, x* C ulend (polar (list 0 0) angend RO); the tooth
" U) [ M8 e$ }6 D' _, y); setq ; thickness. . U Y3 O1 P% d% s8 [
(command "LINE" inv-endpt lend ""); Draws the line
; c6 h6 j4 [% G8 |/ q(redraw) " T6 ?8 W; \$ F2 F# s
(entlast) ! p* _! U4 B( v
); draw-top-line
- j3 y% [+ D9 m9 w5 W$ b6 b1 J; c6 ~) F0 O/ k7 ^2 t/ d
(defun mir-it (cvent linent / pt) 5 O7 d g' C: y; W
(setq pt (dxf 11 linent)) : b- a' u+ ]' T
(command "MIRROR" cvent "" "MID" pt "0,0" "") $ U1 l7 e3 u4 F `9 i, w- |0 c: b
(entlast)
0 g( B$ [' j- d& J$ _. Q+ u); mir-it
" h8 B# S8 e+ g$ Y# W5 j% v# |/ b& B h1 Y8 H) b7 o
(defun segment (DR N en / p1 p2 ang dist midp p0 pang 7 f5 K& R( m; G, o' w2 b; o; a/ a7 y
pang2 p p3 ent3 entl1 entl2 en1 en2)
- ~/ }- \6 ^5 b(setq p1 (dxf 10 en)
5 k& U9 E3 g$ ]5 K* ~" u! ^4 vp2 (dxf 11 en)
) r8 a, U# e" V" Xang (angle p1 p2)
* Y: R F# b2 s' ~dist (/ (distance p1 p2) 2.0) & R* O$ X& U- Z1 }, e/ m
midp (polar p1 ang dist) 5 E* l7 n( K* F. n& H+ X/ F7 b/ \8 i
p0 (list 0 0)
: m: a$ {& r! h5 ? B& X6 V K$ ~pang (angle p0 midp)
! E0 i: j3 F' j6 O( G- f7 f$ ppang2 (/ pi N)
' _' t9 p1 S* l" xp (polar p0 pang (/ DR 2.0)) 6 X7 o2 ]- U! M7 k
p1 (polar p0 (- pang pang2) (/ DR 2.0))
( B F: j, l) G( \* k' p; S" ]; up2 (polar p0 (+ pang pang2) (/ DR 2.0)) ( N7 t. |; I: Y! K
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
, n0 r9 Z, ~) N2 I9 @2 Vent3 (entlast); This is the tooth p-line 4 d- m0 f/ T+ ]
); setq ' c+ R3 [- d: L; N
(command "ZOOM" "W" p3 p1) % k8 Z- {7 W- p! x1 B' L
(command "CIRCLE" "0,0" "D" DR) ;Root circle
6 u) `, ]( ~" J k(command "TRIM" ent3 "" p ""); Trim the root circle 2 N7 g) F q: Q1 b3 B
(command "ZOOM" "P") 3 T& J/ t( x- F7 s3 b: n, h$ V
(command "LINE" p0 p1 "") : I& W' {& G7 E7 {! N- x- R3 E& p
(setq entl1 (entlast))
3 j7 ^5 [% e/ w1 |7 R& T! ^(command "LINE" p0 p2 "") & z& S# k! U; n: A
(setq entl2 (entlast))
* p6 h8 _. H& k(command "TRIM" entl1 entl2 "" p3 "") 2 U1 {6 M/ o0 E
(entdel entl1)
W8 O' `" D7 G. p* U% m/ h(entdel entl2) # O& A8 L5 i4 t9 s
(entdel en) 6 X/ O; q _& k
(command "ZOOM" "W" p3 p1)
/ B* A' r5 O+ ?$ t(command "PEDIT" p1 "Y" "X")
* O t( \9 E* `2 O% Q. C* X(setq en1 (entlast))
O6 C/ T! G8 [; ~9 K9 t(command "PEDIT" p2 "Y" "X") ( R0 |; y" Q# M" f. A# o
(setq en2 (entlast)) " D3 U- P3 ^6 P0 |0 ^$ E
(command "PEDIT" en1 "J" midp en2 "" "X")
3 `8 K) P& x7 i4 H4 y(command "ZOOM" "P") 0 O6 ]) z( z6 _! G- t, [
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") - y" f# D% D8 `7 y8 A
); segment 4 y& }3 z# D3 x0 M2 l |# L) X; E
9 Q2 s. A2 V8 Y) I
(defun c:sg ()
5 Q4 o: @' C! M7 n) J Y(setting) 2 Z8 J" a) O% q) g: G D
(spurgear) 5 _& v* ?& g( z
(resetting)
) i1 j" M" c4 m% t5 G2 t. T1 S. e% v(princ)
2 }5 l& ^5 Q: M" x1 w8 m); c:sg
/ C. l# F% [$ n L+ |1 F, _; q* P3 \ ?. }
(prompt "\n**SPURGEAR.LSP Loaded!")
! l* D4 C4 P5 M8 u6 E0 K(prompt "\n Enter 'SG' to start") # r ~4 c6 j7 |- I
;;;end suprgear.lsp |
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发表于 2008-8-25 14:22