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有下面一段漸開(kāi)線程序：
0 B$ \* d4 l$ h P. a I9 D& e;;;begain suprgear.lsp , o: H% ]% B9 S. A7 L4 y
;*************************************************
$ B4 Q+ c- ]# J- {% M;SPURGEAR.LSP - a lisp program by Tony Hotchkiss
9 ]) S+ \2 |) a; O3 M* {' A;-------------------------------------------------
3 I1 n. }0 E- u( `4 u. z$ H3 i; This routine draws a spur gear using joined ~- p t* t! N; l
; polylines. It lets you use any pressure angle ; T" x) a B j$ R+ v5 y, C
; to design the gear teeth. % e1 s* K+ S+ u" J: C/ m
;*************************************************
. s# @7 S9 ^" b* c! V4 Y8 f(defun err (s)
6 B' ]8 E; r" \; o$ v9 G8 h9 W(if (= s "Function cancelled")
. }& Y& ~. j8 G, i3 \1 m, j$ L(princ "\nSPURGEAR - cancelled: ") ! I, a0 S* M0 {/ ]+ }2 D$ y
(progn (princ "\nSPURGEAR - Error: ") (princ s) ) l4 L! U. C4 B% C; }0 b# D6 S
(terpri)) ' C# T2 j8 p; J9 Z8 o: {
); if 0 w/ H* ]# h) z' }. M) \* l
(resetting)
2 _% o1 X' }/ k: [! p1 r(princ "SYSTEM VARIABLES have been reset\n") 5 O5 T4 E: r" R V/ J3 b q' w
(princ)
$ X* S5 U2 t) L0 \( q4 a3 u2 \); err
$ e! M' S2 J( g O- M. g) o1 P8 Y. i% l* k% V( `5 n7 Y7 X
(defun setv (systvar newval)
3 d" k2 O( S& B J(setq x (read (strcat systvar "1"))) * D, H0 f3 h" H; Y# f2 F& o
(set x (getvar systvar)) W; a; H! ]$ x8 Z+ J6 p5 I
(setvar systvar newval) 6 h8 T* ]/ z* o E' D5 F
); setv
- b @6 O$ A; r1 X9 n4 [
! Q- |; F4 q$ I, `8 @) b. Q(defun setting ()
$ y' K S# D4 @(setq oerr *error*)
, `' ~9 i1 E4 c' E# V(setq *error* err) ( c) x3 n* l( @: N( Q% b
(setv "CMDECHO" 0)
+ y0 N) o' K( g(setv "BLIPMODE" 0)
' X2 \4 W! _% ^" O8 |+ S) N); end of setting
0 j6 @6 r, W+ e) n(defun rsetv (systvar)
4 ?3 m5 C9 o; J$ C0 R(setq x (read (strcat systvar "1"))) 0 N1 K3 n& m- _# n& x8 b
(setvar systvar (eval x))
7 T# p. `9 E4 |); restv : W+ C, A, V9 h" l: N+ z7 b8 A- C
(defun resetting () 0 a& ?# y, ~3 u' p% e1 F
(rsetv "CMDECHO") - Q8 f1 R+ ?- \9 K" w
(rsetv "BLIPMODE")
8 i/ [: o: T A* S# k ?6 q(setq *error* oerr) " N: l" `9 u% j( L# c& Q
); end of resetting ! ?! a# p. q7 a5 W( |( K
; @0 _6 f' r# K& G' `8 A2 H* k
(defun dxf (code ename)
/ b' |/ \6 I5 u' `- X& q% v1 E$ i8 P4 J(cdr (assoc code (entget ename)))
u% g4 ~0 C, g) P# R0 ]5 ]) v# ] j); dxf / [/ U a- n( L0 Q5 `6 o
8 x) _; s% Y' `- j1 b(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 $ ^( l1 e8 G" D1 `7 R+ w
trimcode invent p0 p curvent linent linent2 ent2 p2) $ M$ h3 J0 |) ]. W* i0 c3 V
(setq D (getreal "\nPitch diameter: ")
) V$ u! @4 O' Z0 t, i) KN (getint "\nNumber of teeth: ")
+ S! P2 D1 F! \2 E7 H5 L8 ?phi (getreal "\nPressure angle: ") 4 `' R6 H' M/ | S1 u; |3 Q3 R
phi (* (/ phi 180) pi) ; Pressure angle 2 a+ D# ^1 {- \: r7 |, c
DO (* D (+ (/ 2.0 N) 1.0)); Outside diameter * Y v$ u$ \8 A; `* k( F. |
RO (/ DO 2.0) ; Outside radius
( ]6 X$ |0 ]$ ]4 l c- T: V7 X9 QA (/ D N) ; Addendum
, y- ]: y5 T1 |, X5 z$ T6 R7 @3 c* sB (* 1.25 A) ; Dedendum
u4 c' p+ R4 Y1 IDR (- D (* B 2.0)) ; Root diameter " s% S" _% Y$ j1 [: ?
DB (* D (cos phi)) ; Base circle dia. / {$ i* }; M( A4 P6 b& [
inv-plst (involute DB N phi);involute points 7 {% j, ?) D$ p
trimcode nil
7 f/ f( P, \& V); setq
! H2 N3 s4 _$ Y% G' f(command "ZOOM" (list 0 (- B))
: N* {' m4 ~# u- e! R(list RO (/ RO 1.5)) f2 Z, {( {: y" b5 q
); command
7 P+ ^' U0 B! ^( C5 T(setq invent (draw-inv inv-plst)); Draw involute. # V9 D, u" M Q: J
(setq p0 (car inv-plst)
: I1 ?0 |& u7 T+ p" @trimcode (ext-trim p0 DR D);trim or extend ! j1 C2 ?0 o4 a& e- O
); setq ; the involute.
- O! ]1 e4 ?: l2 |(if (and trimcode (= trimcode 0))
& c, E- j% t& f1 g$ K& E2 r8 z(progn ; Joins the involute to the extension. ( _4 n" B) J5 ~7 g {7 U( ^
(setq p (list (/ DR 2.0) 0))
3 N$ U- ^1 r6 s: c3 ~8 z(command "PEDIT" p "Y" "J" invent "" "X") 8 Z% y9 Y" d9 N/ l+ T
(setq curvent (entlast)) 3 ~6 Z5 H p Q$ f7 e* A
); progn
g' c+ G$ H) H, E* G* w0 |2 B c(setq curvent (entlast))
& a: x4 ]7 \# ]% b" s); if ; |7 _5 s# u7 C: \
(if (null trimcode) (setq curvent invent))
1 G5 s4 P6 P+ b(setq linent (draw-top-line D DB N RO)); top line.
- y1 w$ g- M; B4 F( Z% Q(command "COPY" linent "" "0,0" "0,0") . _. m3 C& V7 u6 y4 @# M; ?
(setq linent2 (entlast)) * v5 D& w% s5 @2 n5 \
(setq ent2 (mir-it curvent linent)); mirror curve
5 @2 t( Q; G3 q" \) s% o* G m( w(command "PEDIT" curvent "J" linent ent2 "" "X") 5 X N6 D9 a$ n8 \9 S
(segment DR N linent2) ; Finish the job!
$ U: I/ M# W* v6 b2 w3 [0 I1 n, ?(setq p1 (list (- RO) (- RO)))
$ a/ K5 T: p' [: s: O' Z(setq p2 (list RO RO)) 5 Q9 _ Q( n' v! y6 y
(command "ZOOM" p1 p2)
, Q- I7 i7 @1 O8 ]7 Y( H# P6 c2 }! C(prompt "\nConverting to POLYLINE, please wait...") 6 [+ W8 P6 H+ d; P% l7 U
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X") 0 w0 ]) D5 {0 ]/ R+ S& }
(prompt "\nAll done!")
, g6 |' `& S) E: s, B4 w); spurgear
- ?7 X6 r3 W8 a4 ]# O
* }) \5 G3 p% X: l4 Y; b(defun involute (DB N phi / numer denom frac theta2max
- u* O& ~. T; E* d+ x0 p0 athetamax theta-inc theta plist RB xval yval p)
2 m" ~- P) H8 y2 V(setq invfact 3)
) k5 F, ?( `* C1 M/ G(setq numer (+ N 2.0)
/ I7 ~& s7 a; V9 h1 x" vdenom (* N (cos phi))
' j' o% B. A: W4 e+ ?frac (/ numer denom) - P' _. T1 a6 q
theta2max (- (* frac frac) 1) / W) v# u9 @, l* _
thetamax (sqrt theta2max) ! e; r9 x4 _' s( x
theta-inc (/ thetamax (float invfact)) ! w+ k$ ?) x/ m$ @ @! F
theta 0
; `8 a4 _( d% Bplist nil 6 q8 z. g8 h) e$ L6 Z/ w
RB (/ DB 2.0)
* L/ V: |% |7 H# k); setq
2 W2 ]+ K5 J3 H$ C# g* j9 Q9 H5 u(repeat (1+ invfact)
0 w9 J$ N8 V" N$ e(setq xval (do-x RB theta) 0 @; f! N+ E+ F
yval (do-y RB theta) : y- n a" X w6 d( d4 p
p (list xval yval)
* u! x" P/ F$ S% W \plist (append plist (list p))
V3 h7 k8 {: V: }* _2 z); setq * ~+ f+ ^7 R: f# d
(setq theta (+ theta theta-inc)) 5 Y" {* Z; }! b2 {5 Z
); repeat : S5 J, s" S, l% t: f
plist
7 z& `* J6 d! y% M( |. b T); involute
& s* w+ Y% _0 Q, P! {* ^3 t9 f, w! W; W2 o$ N; A
(defun do-x (RB theta) 7 Q- Q! b. k G" l! p1 |( o
(* RB (+ (cos theta) (* theta (sin theta)))) * g4 ~4 A+ w2 r! b1 n) `
); do-x ) Y6 g+ \* u. ]& B+ a' C
- T6 ^ t: g, s* m6 A
(defun do-y (RB theta) 8 l7 f6 V! j# I
(* RB (- (sin theta) (* theta (cos theta)))) ; c+ a+ t& E4 v) V; B) @4 d
); do-y
/ `7 |5 Y- W6 f: k: g# u, j, u$ q$ y- ~% T2 |, G% v/ `! T
(defun draw-inv (inv-plst / dirpt plist p)
% D' w) y4 ~# Y: ^: @& o, k) w) Z(command "PLINE" (nth 0 inv-plst)) ) N4 [* E/ K0 h. N! f2 i
(setq dirpt (polar (nth 0 inv-plst) 0 1)) 5 c: k6 C5 c& ~
(command "A" "D" dirpt) : D( M3 R4 T; O v U
(setq plist (cdr inv-plst))
) X) `7 _" D, C2 Z% U(foreach p plist (command p)) ! @( p$ ]: |% \7 r/ a; Y5 b
(command "") 0 H$ Y& a7 N2 b4 t8 S ~+ X& r8 y
(entlast)
# `# m4 ~2 u' z); draw-inv
4 ~/ o2 \ [: j! [; i$ e' q. l
9 `3 j. W: e; l8 M0 p9 X(defun ext-trim (p0 DR D / trimcode dist endr)
; ]3 G2 a# n0 p' F+ P) N7 Z# l(if (> (car p0) (/ DR 2.0)) ; Extends the involute + q: g1 ?- _ B6 [* \
(progn
$ w( ~2 T/ V4 F, r3 Q(command "LINE" (list (/ DR 2.0) 0) p0 "") 1 c/ t" k! \1 ~3 |0 o8 ~
(setq trimcode 0) + Y- e9 H5 T `& g& B/ B
); progn
, c. X9 d$ l! u6 f5 h+ U8 ^); if 6 S, G% H3 |2 }1 n# ]6 z6 ^
(if (< (car p0) (/ DR 2.0)) ; Trims the involute # s; u- {. j$ z6 l
(progn
! Q6 I4 X9 e4 `5 L$ ^(command "CIRCLE" "0,0" "D" DR); Root circle
1 w! J% G& r9 B3 g(setq dist (- (/ D 2.0) (car p0)))
" O, m! T `: T5 P6 Z(command "ZOOM" p0
9 Q: `' k: H7 ?# v1 |' p6 ?(polar p0 0.6 dist)) ' Q, {1 x: V- Y5 s, r* `+ Y: c
(setq endr (entlast))
, P1 {) O2 f3 n% M% N(command "TRIM" endr "" p0 "") ! W" }$ D1 Q! t4 Z+ p' m
(command "ZOOM" "P")
9 N7 O; S- G' \ e" k2 p(entdel endr)
p1 Y$ Z5 f' \% g6 o! E(setq trimcode 1)
7 N3 t* U+ N6 v6 t); progn
1 N1 t( h5 e4 d- H, }); if 1 H9 s: k) \* I) d) C9 A
trimcode , H# ]: |0 d9 x K6 [& h& ]0 s$ _6 n
); ext-trim
: g4 P% R1 F ~1 o" t) u- i$ s2 c! Y/ I7 e5 W8 c! s2 t# H6 \
(defun draw-top-line (D DB N RO / theta-p xp yp alpha
: e) F& g8 P9 A; }, bbeta tang angend inv-endpt lend)
, l; c+ H, W- @(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) 7 q) O: C$ ^) d& W5 V6 b, H) L
xp (do-x (/ DB 2.0) theta-p); This section
- S0 Y8 L" {6 G5 B" Pyp (do-y (/ DB 2.0) theta-p); sets up angles
1 R; n! j8 F/ Xalpha (atan yp xp) ; for drawing a
, d6 w; h, v5 d" \/ Nabeta (angle (list 0 0) (last inv-plst)) " Y- `9 r6 J+ q& j- c$ Q
beta (- abeta alpha) ; line across the & Q+ ]4 m0 K2 e% B+ U
tang (/ pi N) ; top of a tooth ! c7 t; I' {, ~. ?4 t) g
angend (- (+ alpha tang) beta) , z0 t8 d# F& d) J
inv-endpt (last inv-plst); This also creates ) a) b! C7 n# d0 q7 l7 V
lend (polar (list 0 0) angend RO); the tooth 9 }8 I. j: d* p
); setq ; thickness. 7 d8 t5 Y* K& I
(command "LINE" inv-endpt lend ""); Draws the line 2 \7 f; `5 ~; [* E
(redraw) 9 e3 ~) t; d2 B* h$ R5 a
(entlast) $ a6 N! L4 k, D4 H- H1 j
); draw-top-line
. Q7 Q3 Q/ l2 P+ m: p" Z8 K: m0 K+ x$ N4 X# F: Q
(defun mir-it (cvent linent / pt) - B5 P3 k |5 Z* t( c* Y/ Y& I$ K* X
(setq pt (dxf 11 linent))
+ R5 X) A3 O( j, y5 L- a1 a(command "MIRROR" cvent "" "MID" pt "0,0" "")
u0 y& O6 c6 A6 S' m! S' j(entlast)
# X" H) d* {/ m8 d! E+ F' J$ S); mir-it
7 T' J7 ]/ J" S# ?7 ?8 M
" I! s7 T9 T4 [; E(defun segment (DR N en / p1 p2 ang dist midp p0 pang , h6 {% `% O+ Y7 e6 j6 U
pang2 p p3 ent3 entl1 entl2 en1 en2) ) ?" R7 B1 m; J5 q6 B
(setq p1 (dxf 10 en) 2 `* x* y& e4 ^5 N7 m
p2 (dxf 11 en)
) |' G/ C& }& U0 nang (angle p1 p2) 4 Z. G8 z. W0 O h( d
dist (/ (distance p1 p2) 2.0)
; I. e* H y8 I8 B7 c9 ? h2 ?midp (polar p1 ang dist)
5 Q# U, Q* K3 P9 X6 g* tp0 (list 0 0) / i1 W9 Z0 O. r& L; i
pang (angle p0 midp) ! l% y6 H: X4 A' M! ^
pang2 (/ pi N) % r' h( [3 ?& e' {/ O% t1 K# I
p (polar p0 pang (/ DR 2.0)) 3 R3 ^8 n$ M4 i
p1 (polar p0 (- pang pang2) (/ DR 2.0)) ' R: J: x# j8 m/ W# I: w) }+ w$ o" P6 M
p2 (polar p0 (+ pang pang2) (/ DR 2.0)) ; a4 r! c, A, R, n4 f$ W
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0)) " V X% H$ Q6 c' i! @6 l
ent3 (entlast); This is the tooth p-line : t/ F. r# \* L2 r; a( `$ e U: f
); setq ) U+ Y* P% F( w) P
(command "ZOOM" "W" p3 p1)
7 H$ S1 O0 p+ V% B! I(command "CIRCLE" "0,0" "D" DR) ;Root circle
& z9 V# ^9 C9 ?' S(command "TRIM" ent3 "" p ""); Trim the root circle
4 K8 z$ c7 h# O(command "ZOOM" "P")
) b( l( B1 Q C- `$ \. d(command "LINE" p0 p1 "") 1 l9 e6 f9 A! g0 Y1 T
(setq entl1 (entlast)) & j8 M; e) U J1 z/ m. `% z
(command "LINE" p0 p2 "")
- I( ]! x6 `0 x6 e" V(setq entl2 (entlast)) - K0 x! g9 T7 k( p; C# U
(command "TRIM" entl1 entl2 "" p3 "")
) q% X6 @3 ^1 Y) ~(entdel entl1) $ b4 p( z" G X1 Y7 U- A
(entdel entl2)
9 Z! O+ C" B1 f7 C7 R' q(entdel en)
9 Y0 R9 Q& y: ~2 `, |(command "ZOOM" "W" p3 p1)
/ y3 M0 ?1 V9 N$ A$ ](command "PEDIT" p1 "Y" "X") & r& M' P. I( m) H# I, ~! c: q
(setq en1 (entlast))
' U7 z# `7 u1 H9 Y7 y3 y2 k( k/ c(command "PEDIT" p2 "Y" "X") & _' _- z' h3 w. l5 J
(setq en2 (entlast))
# U, K5 [" R" `# u% j" {4 y(command "PEDIT" en1 "J" midp en2 "" "X")
T& t. H2 w, r/ w9 L6 x8 }(command "ZOOM" "P")
7 t/ I! M" }3 u(command "ARRAY" p1 "" "P" "0,0" N "360" "Y") # B' ?/ M( g+ g+ D2 v0 B
); segment 1 \6 Y( I' V x4 x) y# c- V
0 n6 X+ `/ u4 i2 I: g5 V; K" t; C(defun c:sg ()
/ p! e1 s: j G7 l, s* x! D0 ~(setting)
0 w6 D4 `* z8 }+ @/ o! a' S(spurgear) 9 \5 f) v2 R- Y9 m
(resetting) ; h+ K W) F" S+ X7 E& E
(princ) * V7 H6 A7 p; S/ v8 p1 i0 u
); c:sg * V$ r9 I! m) D) u9 H
0 y! t9 `% y/ u: r: \. d7 N9 K(prompt "\n**SPURGEAR.LSP Loaded!")
! \+ ~( _3 ?! b6 E(prompt "\n Enter 'SG' to start") # c( C8 g3 `2 q8 ]% j
;;;end suprgear.lsp1 u7 r+ h4 x# t! _
打開(kāi)CAD圖形后點(diǎn)擊“工具”菜單→AutoLISP→加載→找到自己所存的2 q' o9 B- X: _9 T1 S& {" p
".LSP"文件位置點(diǎn)“加載”、點(diǎn)“關(guān)閉”。在CAD環(huán)境下“命令”狀態(tài)欄里輸
& F- E! n7 S% V6 |4 P5 v6 |入“什么”命令后才能按提示使用? |
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發(fā)表于 2007-10-20 03:42:53
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