有下面一段漸開線程序：
( U3 j: }: m6 H+ e1 [, };;;begain suprgear.lsp 6 z1 p# |8 N: k4 I) a
;*************************************************
7 r' s- B% C& }8 x m I2 n;SPURGEAR.LSP - a lisp program by Tony Hotchkiss - G( x/ \# y3 q% ~9 @
;------------------------------------------------- V G& E! Q& I- }( ?0 M# M
; This routine draws a spur gear using joined ; p* m0 p8 G0 g3 t/ f; s; J8 U: t6 l
; polylines. It lets you use any pressure angle - `* t8 n( ^9 K7 b& I
; to design the gear teeth.
- r% {4 ~ j5 a7 L5 _;*************************************************
: j; }2 P& P2 Q(defun err (s)
k4 e; E3 C% F4 }, [7 D! X6 n(if (= s "Function cancelled")
( q, ~, Y) D. U. k' C& E% P(princ "\nSPURGEAR - cancelled: ") * A$ z: U8 x0 w' Y1 K+ R
(progn (princ "\nSPURGEAR - Error: ") (princ s)
! ~) s, U. j' D1 O: o$ U$ o(terpri))
5 B! m" |8 c t: ~# j); if
[6 x7 a B* n! i6 J. M4 `' G(resetting) / |8 i1 p9 ?! t# d* ?
(princ "SYSTEM VARIABLES have been reset\n") * ]7 q2 F3 d/ P4 @$ o- B
(princ) , W, d1 N: O3 D0 r
); err ; i: w% o: A g9 g' W; m1 X
, I9 J$ x6 s N& J. _(defun setv (systvar newval) , q" d' J3 H+ A0 ^6 G
(setq x (read (strcat systvar "1")))
0 x# y9 n; j. L% j/ W(set x (getvar systvar))
9 w: m q( A3 I1 n; c9 X(setvar systvar newval) * G! Y o& G! l( c! n0 o; O
); setv ( S3 L% n+ j* i/ t1 e" }: g
* M9 r r2 n4 {(defun setting ()
* j. ^6 x) f& P" R(setq oerr *error*) , a1 B$ p# ~% s; [4 x% R
(setq *error* err)
& [& F6 F( {% M(setv "CMDECHO" 0) ( S4 r8 p: Q0 Y, \, t
(setv "BLIPMODE" 0) % d2 E% E( Z" \3 h# W' P# S; J
); end of setting
& P5 b7 x9 k; C5 S% F(defun rsetv (systvar)
( D3 ]2 \* T: O2 K(setq x (read (strcat systvar "1")))
* S3 u$ D: I' e(setvar systvar (eval x))
. A# x8 @5 R# N- t); restv ( E# W$ G( h0 w* w! f% o( x! W
(defun resetting () ) {3 O# U3 e \$ ~8 u
(rsetv "CMDECHO")
0 N9 [9 g! r8 p) `$ S2 r(rsetv "BLIPMODE")
3 V( Y0 U G" t(setq *error* oerr) , h$ v7 V1 ?! Y- p! i! V6 c
); end of resetting
/ |4 U i Q1 U1 K
6 y4 R } G+ X(defun dxf (code ename)
9 n7 S* `$ ]! L6 j) D/ a8 a/ H(cdr (assoc code (entget ename)))
" k1 M) e) [5 ^' F" o); dxf 8 D; }/ W+ r3 k2 V* c$ Q; @3 t- d
) E( G4 N; l5 S9 P0 U7 X4 a- P(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1
3 T- w, T, V4 H7 [! r: I5 }/ b* Ftrimcode invent p0 p curvent linent linent2 ent2 p2) 7 K: W" j/ e$ c8 [* `9 S
(setq D (getreal "\nPitch diameter: ") " [ z1 h5 J* F5 P3 k5 y4 d6 n
N (getint "\nNumber of teeth: ") 5 R. L" o4 U P( b: H
phi (getreal "\nPressure angle: ")
& I- N U- @9 S: O. }5 [phi (* (/ phi 180) pi) ; Pressure angle + Q1 M/ d4 T! ^: c( P" m) l) u
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter : f; _/ v9 K, N/ q" v" G
RO (/ DO 2.0) ; Outside radius * z: F. s6 K! H& W1 G/ {
A (/ D N) ; Addendum . Q4 d, N, |6 O. E: e! U
B (* 1.25 A) ; Dedendum
* K6 Y C' m# W3 [" L: EDR (- D (* B 2.0)) ; Root diameter
- Y1 A) P7 M3 f" c$ IDB (* D (cos phi)) ; Base circle dia.
# t) w7 L) p( ainv-plst (involute DB N phi);involute points 8 c" ]$ N L$ q5 D' `7 f
trimcode nil
2 M% ^1 o* g1 @! M) N); setq
: s# @2 t6 o/ Q" c& v- l2 x(command "ZOOM" (list 0 (- B)) [# ]& V, Z/ y. b8 x. `' y. u
(list RO (/ RO 1.5)) 4 c1 |9 N* E6 a/ H# {- `" u0 @" I) j
); command 2 P$ b4 i- K/ L; U" Y% O; M( S& Z
(setq invent (draw-inv inv-plst)); Draw involute.
/ L2 x3 w. F2 y) G7 Z(setq p0 (car inv-plst)
+ j' P# p# g, E( N( X) I- \7 Ztrimcode (ext-trim p0 DR D);trim or extend
: |9 }0 m- K3 N. a9 n); setq ; the involute. 1 G' }/ n6 f3 G' U6 E
(if (and trimcode (= trimcode 0)) C# R% ~& ~2 d, z
(progn ; Joins the involute to the extension.
, A4 l$ c! c& I(setq p (list (/ DR 2.0) 0))
7 W( |$ g8 g, z7 m" H% P(command "PEDIT" p "Y" "J" invent "" "X")
* N* Q% M! Y+ U0 b( N" ](setq curvent (entlast)) - Y! N' \! E2 y7 w1 Q& }! W' j
); progn
; K2 }; {+ D/ l(setq curvent (entlast))
6 c- G$ X" S7 _# ~* r" W, a); if ; E. ?+ j1 F) s0 E
(if (null trimcode) (setq curvent invent)) ' N& ~0 n* q4 C y
(setq linent (draw-top-line D DB N RO)); top line. 1 d5 ~$ p( D a: w) ~0 `; q/ ?. \+ S
(command "COPY" linent "" "0,0" "0,0") 8 Q* e; A" n! K& V6 k8 C0 @+ {+ l
(setq linent2 (entlast)) ( Y3 |! W4 n; N
(setq ent2 (mir-it curvent linent)); mirror curve
" k1 o' G A7 ~& d7 N(command "PEDIT" curvent "J" linent ent2 "" "X") 3 X! @3 ?# x: b4 [
(segment DR N linent2) ; Finish the job!
; Y9 ~6 @. I1 X# G% P0 p(setq p1 (list (- RO) (- RO)))
' R6 L# N5 @$ ^1 Y: c, p; o( j(setq p2 (list RO RO))
3 _4 X0 J( w5 {* z(command "ZOOM" p1 p2)
3 @) M1 w! x( J8 H% K& ]+ i/ p(prompt "\nConverting to POLYLINE, please wait...") 5 N5 i% n) N& D0 i! K
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
( C% G; D8 m" a8 {2 T(prompt "\nAll done!") 8 Z% {) Q/ r; G5 e; r; J
); spurgear 1 Z. |* w# `' [, @2 w
2 I4 c) [1 r- [/ R' v
(defun involute (DB N phi / numer denom frac theta2max 3 r7 F' S C8 ? P9 @5 c
thetamax theta-inc theta plist RB xval yval p) 8 ]6 C! n! A. s! z
(setq invfact 3) % }, W- ? q. M3 B6 K
(setq numer (+ N 2.0) 5 Q; b" j9 X" \- n+ q* M/ c
denom (* N (cos phi))
* Z5 P N8 m) Afrac (/ numer denom)
3 V& L+ h. m9 L& f" htheta2max (- (* frac frac) 1)
% R( l+ l: e/ R* R" Ithetamax (sqrt theta2max) ( a# _% _5 Y1 _& F" C& R V5 S
theta-inc (/ thetamax (float invfact))
- S) \) {1 \4 G. X2 {theta 0 1 b; z; k f! ^( { p3 z5 C
plist nil / e }+ L! {4 b9 q
RB (/ DB 2.0)
% t$ P( P2 i, F/ R) r" E); setq
0 S) ^0 [6 J2 K1 M8 a& o9 Z(repeat (1+ invfact) - ?9 X# x. m/ s( J6 e- b
(setq xval (do-x RB theta) : J4 \; o4 L' @" g$ U5 o$ {
yval (do-y RB theta)
, |. `' |! e3 `p (list xval yval)
: u& i1 ^6 V$ ~; j5 }/ K2 n2 d4 [plist (append plist (list p))
7 `( D0 Z/ r+ K5 U' F); setq
7 l1 |+ Y6 f$ K/ w4 D/ M(setq theta (+ theta theta-inc))
. X6 z% f# ?) a1 B5 G1 d); repeat
$ E$ X5 E3 f) P) i8 q; i! N5 dplist
6 n5 O, c M% N1 _! o7 w); involute
+ |/ \" k0 q: F3 }" [( O I% ?3 W9 H: Q' z
(defun do-x (RB theta)
) n+ Q/ G5 G/ ]+ G8 p5 j1 ^, D(* RB (+ (cos theta) (* theta (sin theta)))) ' h0 ` s7 p0 M% K: U& c1 ]" ` m
); do-x 1 z# p0 }- f' G7 d0 d+ G9 D! H
! g+ ]! D9 N' a1 F) ~' k. g7 f
(defun do-y (RB theta) . m# Q% Z* l6 b, U4 y! n
(* RB (- (sin theta) (* theta (cos theta))))
9 y4 Z5 }& M& I9 X; |); do-y ! {8 e G A. h* C
, F! n6 {/ h% T1 r+ h0 p7 N(defun draw-inv (inv-plst / dirpt plist p) 6 h" ~/ k3 T( b, u7 w" v
(command "PLINE" (nth 0 inv-plst)) ; s/ _7 N4 \" M* e
(setq dirpt (polar (nth 0 inv-plst) 0 1)) 2 s3 J- Y. S* A( j& ~& M% C% o$ D
(command "A" "D" dirpt)
" `8 w" P; p( o$ E6 ~(setq plist (cdr inv-plst)) 5 ?' @1 Z1 D& f( G
(foreach p plist (command p))
1 S/ Q# J: L# s. k' X e, ?(command "") 3 ~2 {3 u( t. ~8 E7 Q$ y
(entlast)
% O* V! j) M2 q); draw-inv
7 j% m6 c1 q1 l2 }0 L% N: R
2 K. o, A2 t; d(defun ext-trim (p0 DR D / trimcode dist endr)
# C+ D3 g, R1 @(if (> (car p0) (/ DR 2.0)) ; Extends the involute
/ X9 u* C# X: i. e- A$ n9 f(progn ' N; N2 Q1 k9 O: Q
(command "LINE" (list (/ DR 2.0) 0) p0 "") 9 k1 E% l; w$ h5 A- }* @( {
(setq trimcode 0)
0 p1 U6 f) c. @* g \3 H3 ]; P); progn # R( K+ L4 v1 i+ S. D# p
); if , S/ |/ b3 O8 {. V5 v
(if (< (car p0) (/ DR 2.0)) ; Trims the involute
0 K f4 @+ O# ]- p/ h& j2 ^ i) d1 V(progn
9 {* @- m0 D9 A% N" O+ h(command "CIRCLE" "0,0" "D" DR); Root circle / K# P J1 Z9 [7 Q U ^+ e# |! f
(setq dist (- (/ D 2.0) (car p0)))
2 A# e1 n3 J) R* {% ]- t7 a(command "ZOOM" p0 5 Z" N: h2 j2 f) ]* y" s5 k1 W
(polar p0 0.6 dist)) 6 b8 n; i* |2 K& E+ n9 ^; x- T
(setq endr (entlast))
# H7 [4 |# c9 z) N" w! P(command "TRIM" endr "" p0 "") 6 h& O6 ]" t5 h1 y) a) p0 k) k
(command "ZOOM" "P") - x4 T$ R( w l2 w0 f3 e; F" V8 p
(entdel endr)
9 r8 X# _( \% I3 E3 A3 ?(setq trimcode 1)
7 w d, C) o& z s9 B); progn g! W& Q& F& p) y
); if 3 L4 q9 ]0 o& _. k8 L+ T6 v
trimcode
h, E/ k6 l) n) w( q6 [, w); ext-trim
0 J) a/ J* F1 C, H/ C
; c A8 P# |/ A! \(defun draw-top-line (D DB N RO / theta-p xp yp alpha
, Z, x; w- g9 W$ Fbeta tang angend inv-endpt lend) 9 O, r$ I/ B( c2 B
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0))
0 E$ ]4 [8 {8 v, b: lxp (do-x (/ DB 2.0) theta-p); This section ! f, y4 r& F9 k/ ?$ d8 u! u2 w
yp (do-y (/ DB 2.0) theta-p); sets up angles $ S5 {; G( }+ W! e
alpha (atan yp xp) ; for drawing a 5 I* K+ y5 z* q& G& L1 _$ j
abeta (angle (list 0 0) (last inv-plst)) 9 \/ w) A6 L1 ^( X3 F% K
beta (- abeta alpha) ; line across the
* _, {, Q0 Y Ttang (/ pi N) ; top of a tooth ' p- G" S& c! C+ y2 S1 ]
angend (- (+ alpha tang) beta) 4 t& p& \8 d- w
inv-endpt (last inv-plst); This also creates ! n8 J0 n: b3 Y& A6 N8 X4 N
lend (polar (list 0 0) angend RO); the tooth
& T7 s" P) O# j); setq ; thickness. 4 A& R, E: f8 ~
(command "LINE" inv-endpt lend ""); Draws the line ! D: c9 _1 s: a0 A ?( D) L
(redraw) , S0 }, s' @3 s
(entlast)
7 A! N. y; p7 r4 [); draw-top-line ) G1 Z+ n0 o. i% @3 o+ @/ f
8 l6 L/ c2 \( A0 s( \
(defun mir-it (cvent linent / pt)
^+ V" E5 w3 j; d: |8 [' C/ i(setq pt (dxf 11 linent))
4 W# ^: s+ `+ O. F) z- J& R* v! S(command "MIRROR" cvent "" "MID" pt "0,0" "") 5 {1 F' m5 J5 A7 M
(entlast) $ U; u9 ]& _6 ?0 ~* x3 d1 Q
); mir-it
* H) N/ o. f- n# a1 W2 r- H9 F+ g6 f# S& i6 s- [7 S
(defun segment (DR N en / p1 p2 ang dist midp p0 pang " u7 x6 B5 A3 D9 w
pang2 p p3 ent3 entl1 entl2 en1 en2) 2 j9 a! I4 C( F; M3 C! m9 d. n: U
(setq p1 (dxf 10 en)
) e3 x; n) R8 @p2 (dxf 11 en)
z! x4 w" g: ~3 d0 eang (angle p1 p2) + e& L) e$ `$ ^
dist (/ (distance p1 p2) 2.0)
# ^5 f7 G, ^$ c! R. C4 Zmidp (polar p1 ang dist) 9 z# T0 l; M" B- g' m7 I8 n
p0 (list 0 0) / X1 g9 w# C. ]% W
pang (angle p0 midp)
3 z" m4 I- |- n! o3 x R9 F* @. Dpang2 (/ pi N) 6 V# o5 f8 o! b
p (polar p0 pang (/ DR 2.0)) ( O3 y, ?/ K# b
p1 (polar p0 (- pang pang2) (/ DR 2.0)) F$ d4 t. L) C" A& j! I: p
p2 (polar p0 (+ pang pang2) (/ DR 2.0))
) m/ z. g! R, K8 n! G/ Wp3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
- `1 q; a+ L5 x9 @$ Xent3 (entlast); This is the tooth p-line # x, _3 j# N9 K$ I" m9 ~: `
); setq
4 J S5 j$ G9 G# }$ j(command "ZOOM" "W" p3 p1) ) p, V. G0 e0 S2 ^! J
(command "CIRCLE" "0,0" "D" DR) ;Root circle 9 j! w4 s( p6 p0 @
(command "TRIM" ent3 "" p ""); Trim the root circle
) w9 w3 _0 M0 u(command "ZOOM" "P")
! _ ~% n" H# }; j- g! u(command "LINE" p0 p1 "") ; B+ Q% J) W9 Z- H7 v
(setq entl1 (entlast))
" z: z, A1 R! j; w+ N# a5 \3 O(command "LINE" p0 p2 "")
& O w( i1 E; j' u* J \" y& q(setq entl2 (entlast)) @+ a/ p9 Z+ q/ t4 m
(command "TRIM" entl1 entl2 "" p3 "")
* k$ h+ `, k% d9 z+ L1 P(entdel entl1) ' n) }: o+ ^ q% Z
(entdel entl2)
8 _1 ?7 i/ q$ B( E7 c(entdel en)
( C2 I- X5 t, o8 r6 M# d(command "ZOOM" "W" p3 p1)
$ J2 F& V+ W% e# p+ }" g(command "PEDIT" p1 "Y" "X") 9 p* _% `0 x; i
(setq en1 (entlast)) 2 w, \# h- I) c: |
(command "PEDIT" p2 "Y" "X") ; T0 R8 E' _/ J/ S
(setq en2 (entlast))
7 s. u/ k$ |/ `(command "PEDIT" en1 "J" midp en2 "" "X")
# w& n: {% Y8 ~! P! ~* J(command "ZOOM" "P") . B# i$ W5 C$ p. ^
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") ! U" h, F# b8 p) E
); segment
; @. u. G# N4 U0 f" H+ |, q
# l# \% s O" o(defun c:sg ()
9 f, B4 @7 d4 C% e; v(setting) 9 Q O5 Q. n" E }; U. X
(spurgear)
: D8 l3 w s' H(resetting) . l7 }: [0 r& z. l$ o' w
(princ) ! r D$ m. `5 l
); c:sg
$ j, n6 {! z U/ l( i
$ Y+ z6 Z7 y( u! x3 B _, H0 v& j# }(prompt "\n**SPURGEAR.LSP Loaded!")
* C2 E7 O- \ p(prompt "\n Enter 'SG' to start") % g% H: H, l7 j) R
;;;end suprgear.lsp4 f8 Z3 p5 _7 m/ \6 @
打開CAD圖形后點擊“工具”菜單→AutoLISP→加載→找到自己所存的& p. P+ ^5 V5 h& C! h: M* X- V
".LSP"文件位置點“加載”、點“關閉”。在CAD環境下“命令”狀態欄里輸+ z! {* F) v K, Z+ K
入“什么”命令后才能按提示使用? |
發表于 2007-10-20 03:42:53
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