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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。" Z# m& O* j5 m% A5 v) t1 U6 o
;;;begain suprgear.lsp ; f* o& H( n/ s% I6 e9 X: v: b
;*************************************************
1 y: W: T5 ^* z. {# F;SPURGEAR.LSP - a lisp program by Tony Hotchkiss ) ~+ V: Q& K+ h4 w2 |
;------------------------------------------------- 6 M5 e; T0 `( B, V
; This routine draws a spur gear using joined $ |. M3 Y2 \0 `- Z9 |
; polylines. It lets you use any pressure angle
7 d6 B0 n5 E% B; r; to design the gear teeth. 9 P2 q- r8 @8 A7 O2 w: b
;*************************************************
3 J1 C8 A8 f/ D) G1 h4 x. M(defun err (s) ( \ }7 y& A+ g1 W( T
(if (= s "Function cancelled")
2 I& y, {! s7 N(princ "\nSPURGEAR - cancelled: ") 3 u; l5 ~: `0 Y" l' F( A
(progn (princ "\nSPURGEAR - Error: ") (princ s) 0 L% ?& i0 f' n3 |
(terpri)) # y& S( F: L1 t
); if - E% G. g A- ^; L) s$ y
(resetting) 8 U3 O. Q2 G) j
(princ "SYSTEM VARIABLES have been reset\n")
/ M; V9 T9 h+ B(princ)
7 n0 A, C7 y* ^" N); err
0 Z b, e0 S% I3 D1 G2 b2 i; c5 S
9 I! G" Z. f9 D V/ v(defun setv (systvar newval)
3 d1 h2 g q% k) L6 s# ]0 C7 @) b(setq x (read (strcat systvar "1"))) : n# F9 e6 d6 N9 p
(set x (getvar systvar))
! t- ^( I A+ _2 z(setvar systvar newval) / }6 R7 s; u! h2 l6 `' T
); setv ) d' G6 m& }1 c, D, X
( Q7 U7 `5 j! }7 b5 ^(defun setting () % s8 k( u5 b7 d* Q) T$ a
(setq oerr *error*)
; m/ L: J6 V- V8 c' ]0 c4 p(setq *error* err)
$ l# G ]/ Z, |/ {( a. a2 o. _$ J(setv "CMDECHO" 0)
. U+ H' ]8 T1 ], k( r) `(setv "BLIPMODE" 0) & s% P: H# z$ Q5 V
); end of setting
! \: X8 b! N1 A: V6 L(defun rsetv (systvar) # E: ?+ g6 T3 O9 z( ~' _$ D7 c
(setq x (read (strcat systvar "1")))
: @' ~% P6 j2 {& R0 T(setvar systvar (eval x))
' C! P. S& z; p: `8 O" Y); restv 6 z! ^" ]! R: _& y
(defun resetting ()
( L) X# t- _ K$ e! R: O& i(rsetv "CMDECHO") # s: Z6 H2 M4 E/ ^) a" y
(rsetv "BLIPMODE")
; N' [4 ^9 s! P; _) l# {* X) T(setq *error* oerr) 2 e9 Y) {5 f; E& ?% Z
); end of resetting
- u, [2 H# h% l0 b) z7 P$ z% Q! H4 p# F& S
(defun dxf (code ename)
+ I1 y+ g3 S9 E/ x& v(cdr (assoc code (entget ename)))
# i# I G* ?9 o: f); dxf
6 ~! n, p; K% k& O% \5 u
( M3 T% l4 ~- x% D(defun spurgear (/ D N phi DO RO A B DR DB inv-plst p1 ! n; o" z* j6 C# o9 |7 o- h
trimcode invent p0 p curvent linent linent2 ent2 p2)
* ?+ S- `2 K( V" N7 |1 x, X(setq D (getreal "\nPitch diameter: ")
: N# b- s6 h: a+ h1 g4 @1 G( ON (getint "\nNumber of teeth: ") - G& L2 G! x2 A0 m. F4 @: ^
phi (getreal "\nPressure angle: ")
& b4 _+ [- L$ ^phi (* (/ phi 180) pi) ; Pressure angle
" }& K5 H/ K, `! H) U7 DDO (* D (+ (/ 2.0 N) 1.0)); Outside diameter ; P3 w z2 A$ o! M3 s& \3 `
RO (/ DO 2.0) ; Outside radius
$ b; g' J/ g0 q$ E" Y* O7 rA (/ D N) ; Addendum
" i; ]. H3 X3 j0 z5 X( S4 y2 lB (* 1.25 A) ; Dedendum 5 `, X7 n4 y! j3 l5 a# c
DR (- D (* B 2.0)) ; Root diameter
( M' w$ U9 b v2 y( IDB (* D (cos phi)) ; Base circle dia. & o: c |/ m4 K% z' \( n! E8 [
inv-plst (involute DB N phi);involute points
6 S8 `7 n- C/ {1 _( e& R+ r* Qtrimcode nil ( l% h# Q) b, K8 V( f0 P: A
); setq
* X/ N1 y* h3 C b(command "ZOOM" (list 0 (- B)) + i- x0 |% J8 x$ p3 q2 F0 B
(list RO (/ RO 1.5))
) k/ M- a9 S' J); command ' z- g" o* G% u: ~+ g7 F {* ^
(setq invent (draw-inv inv-plst)); Draw involute.
8 Q8 |. `6 d% m9 w7 N: t5 U(setq p0 (car inv-plst)
+ W* j7 ^2 g7 X4 z6 K0 A( ?trimcode (ext-trim p0 DR D);trim or extend
" z, n+ n9 b8 Y( F/ g); setq ; the involute.
3 P: D( M; w" O) Z1 w4 J(if (and trimcode (= trimcode 0)) 1 W% b8 P" W$ Q$ \
(progn ; Joins the involute to the extension. 7 q2 a9 ~5 |) M/ t4 E
(setq p (list (/ DR 2.0) 0)) 0 b' \9 t1 o2 u* s# Q2 N2 h
(command "PEDIT" p "Y" "J" invent "" "X")
# J. t% C$ V+ q u0 f& }* U(setq curvent (entlast))
' x- |7 ?1 s2 k( B, R5 v); progn
# X' {5 u& _) W$ W! X(setq curvent (entlast)) % g/ r1 v- E6 T% ]0 p
); if - e1 v( D- L) b
(if (null trimcode) (setq curvent invent))
/ s( ^) E0 p* A* B(setq linent (draw-top-line D DB N RO)); top line.
( C H$ W" d( o0 B(command "COPY" linent "" "0,0" "0,0") - u* H( D9 F2 C
(setq linent2 (entlast)) * J5 m3 i% _" _3 j
(setq ent2 (mir-it curvent linent)); mirror curve ' P4 V" C: P/ |' {$ f
(command "PEDIT" curvent "J" linent ent2 "" "X") * C+ b8 x3 B9 O+ ~) K2 h4 ^
(segment DR N linent2) ; Finish the job! z# Y6 M- Q+ C5 o- Y, B9 k
(setq p1 (list (- RO) (- RO))) $ a, m/ u3 H2 v8 W& ~2 \7 @
(setq p2 (list RO RO))
* O( R' @: }9 \4 q4 B" h(command "ZOOM" p1 p2) 9 N$ l, V9 x: r8 o9 l6 \# k$ ^
(prompt "\nConverting to POLYLINE, please wait...") , l% N9 p5 Z$ {; j8 b& M
(command "PEDIT" (entlast) "J" "C" p1 p2 "" "X")
- \6 R8 x5 k: U7 X" s- s(prompt "\nAll done!")
* L. N+ p/ H+ {6 K; R9 w); spurgear
" B. K( ~( U( F! ]' z5 _9 V' }6 p7 }. p8 d$ h! u b. H2 D
(defun involute (DB N phi / numer denom frac theta2max
4 F* ]% W6 U4 qthetamax theta-inc theta plist RB xval yval p)
9 J. X6 ]* n- S. t, G* |3 `(setq invfact 3)
/ V+ m- f7 r5 _6 X( V/ O( e: t, q(setq numer (+ N 2.0)
, E+ a: j* f' n; [2 ~. o' W# vdenom (* N (cos phi)) # H6 e' s" Q! P# l8 Q
frac (/ numer denom)
6 Y* Z2 g$ g# Y) p8 P! |; g* I% otheta2max (- (* frac frac) 1)
4 Z2 Z" b* ~! ]8 Dthetamax (sqrt theta2max) 2 f1 m* N3 x8 b; X
theta-inc (/ thetamax (float invfact)) / O! G, W5 M3 S1 s* ~# a$ c: l& w D
theta 0 # E$ E# D+ Q+ H; y2 f! V
plist nil
( m" R/ E( ?1 z1 vRB (/ DB 2.0)
7 T% a' a: q# i- F0 Q: ]" O# Q' R); setq
- @+ ~$ T* p9 c# j(repeat (1+ invfact)
' C! k" m+ M9 S2 p- b. D(setq xval (do-x RB theta) 7 s3 O0 n5 `9 x& V9 h
yval (do-y RB theta) $ v( ]& ]: J; Q' r8 h
p (list xval yval) / E8 ]7 } A, }7 Y
plist (append plist (list p))
+ H, G0 m: g0 U5 J- B, j$ e); setq " R& l) e$ U. g1 H7 u1 N* ?( V
(setq theta (+ theta theta-inc))
4 E" B, ~& ]+ Z* O2 Q8 K); repeat & I, h3 H1 ^5 `1 B1 Y) F4 O+ y
plist n! V f' ~& p' F% l* Q" |
); involute
9 I0 v" A+ v- b! A! |3 k7 k. a
. i: P/ r. n3 C- J+ _& u( r# V(defun do-x (RB theta)
7 G- ]9 y! p0 F, K! x2 L1 s2 K$ K(* RB (+ (cos theta) (* theta (sin theta))))
( r" ^) ]' T ^1 Q& _" v); do-x
& {) J8 {1 x1 x9 E `
" \& L. P+ x& w& o( l(defun do-y (RB theta) 1 d$ Y! ~* {5 K+ l
(* RB (- (sin theta) (* theta (cos theta)))) 0 n+ V; {; _ K: M5 s' K9 g2 J2 ^
); do-y
# T2 e$ W& @6 g" @
+ c3 G% F) P: E- P% D(defun draw-inv (inv-plst / dirpt plist p) N" g* E6 A" p% z7 Y( g
(command "PLINE" (nth 0 inv-plst)) ) P2 L* Q5 t, [' D1 b* b
(setq dirpt (polar (nth 0 inv-plst) 0 1)) 4 f7 @3 {2 Q9 R( z7 m
(command "A" "D" dirpt) , f/ r* w0 u% j) B
(setq plist (cdr inv-plst))
2 a* U! W/ Y( ?! T6 z' q# r1 I(foreach p plist (command p)) ( b4 B- e/ O9 w8 d
(command "")
& l# ^* ]& ]" i& d# s(entlast) 5 U8 q f3 s( d& R# R3 k
); draw-inv
) M; Y; O1 y. ^% ]9 N! x9 m) k3 C* o+ k
(defun ext-trim (p0 DR D / trimcode dist endr) * l6 F' \: b5 {8 a6 q2 f4 r
(if (> (car p0) (/ DR 2.0)) ; Extends the involute + V7 }2 X/ L) A
(progn
( l8 O3 E: w& q3 Y' S0 K! H, a7 l(command "LINE" (list (/ DR 2.0) 0) p0 "")
. i9 z8 u4 a0 y4 g$ B(setq trimcode 0)
( \, q8 d d, x6 Z: w+ r9 h) X6 X); progn $ {6 l2 {+ w; p( E" r G9 \2 Z7 v
); if 2 d( P' u; }8 I7 [* Q7 s2 [7 K
(if (< (car p0) (/ DR 2.0)) ; Trims the involute : d4 Z" L; {/ A1 C: w+ C; l
(progn / n( r) s3 h: @1 L# d2 K7 j, s
(command "CIRCLE" "0,0" "D" DR); Root circle
# B m9 |: }: C8 S: [. B% g(setq dist (- (/ D 2.0) (car p0))) 4 v" f: _ I4 z' L5 o
(command "ZOOM" p0 8 }7 H4 r. Q) @8 Z+ x) e. G7 j
(polar p0 0.6 dist))
/ Q# V6 U$ B) V4 F' W& I$ L(setq endr (entlast)) ) q6 c( F, O" z; v: v2 R9 I
(command "TRIM" endr "" p0 "") ( {5 p F$ q$ ?/ [5 q0 i
(command "ZOOM" "P") $ ] Q8 l; _4 F/ w2 \1 ~
(entdel endr)
0 R- D* R# }( R& p+ u(setq trimcode 1) 8 y( i) R* Q# n) l
); progn
$ S& N% D# ^' f" k); if - e: \' L) u$ n6 Z/ w/ L9 q
trimcode " {2 D5 O0 w1 x7 j% M7 K- f4 K9 R9 P
); ext-trim
1 `& c9 {! D& k. k% j. c
' d* I0 q5 B4 s9 r P" t4 i w(defun draw-top-line (D DB N RO / theta-p xp yp alpha
" @0 l+ q6 Y! Sbeta tang angend inv-endpt lend) # ]& i8 @1 F5 [+ P8 L$ @2 C+ ^
(setq theta-p (sqrt (- (* (/ D DB) (/ D DB)) 1.0)) - x4 |4 X$ j7 Z
xp (do-x (/ DB 2.0) theta-p); This section
! n8 T$ w0 k5 M Ayp (do-y (/ DB 2.0) theta-p); sets up angles
% o7 G- q' i9 Dalpha (atan yp xp) ; for drawing a
* X; z2 y: o" Q. N: d) F9 cabeta (angle (list 0 0) (last inv-plst))
8 \( S- ~4 B- K X7 Obeta (- abeta alpha) ; line across the
' a. Q9 k& K$ Q( F: Ztang (/ pi N) ; top of a tooth ; G* N& X; n; {9 N
angend (- (+ alpha tang) beta)
/ q/ h4 t0 d2 z& {* z/ b: Xinv-endpt (last inv-plst); This also creates
+ x ?% R- V+ w$ \' N, i2 `0 w; Clend (polar (list 0 0) angend RO); the tooth 4 i, b: x3 }9 g6 u# f! k4 s1 l- y
); setq ; thickness. 4 }, q( N+ P2 r+ A0 |- I0 o1 [
(command "LINE" inv-endpt lend ""); Draws the line
# u" d5 k& W+ u1 _(redraw)
# O0 d; n5 ?- O7 U. k8 x. o(entlast) 4 J! q2 ^0 \6 L# t* T- A$ Z
); draw-top-line
6 |& X6 R- @. g3 Z% R' T, b; o+ S3 \* K/ Z
(defun mir-it (cvent linent / pt) ) |( _+ x/ V& L# [
(setq pt (dxf 11 linent))
; B* ]$ l4 I9 Y/ V/ [" n$ |(command "MIRROR" cvent "" "MID" pt "0,0" "")
3 m4 O2 r3 G' \% r% M4 k$ w) L(entlast) ; g* H/ |0 X: p/ L' t# e
); mir-it
& O8 k2 i p8 Z
4 c" f( @' c& K" V& E$ \. c(defun segment (DR N en / p1 p2 ang dist midp p0 pang
3 {0 M9 l$ G0 ppang2 p p3 ent3 entl1 entl2 en1 en2) 4 x, c, x2 o; M6 E$ i U
(setq p1 (dxf 10 en) " U/ O1 E1 C [" ?5 L8 ?6 D
p2 (dxf 11 en) & o5 O( j7 k# e
ang (angle p1 p2) 5 A8 V' L( N5 E# Q
dist (/ (distance p1 p2) 2.0)
* d+ V/ M$ s6 T) ?% H' q7 tmidp (polar p1 ang dist) / Y" S# _: {/ U; z. z! I# {; O
p0 (list 0 0) 6 |8 a" V1 F- V9 g! c' ?
pang (angle p0 midp)
" ]2 w- A+ ~9 D) N0 G7 _pang2 (/ pi N) 8 P8 }, _, f8 {2 \8 c8 q
p (polar p0 pang (/ DR 2.0))
+ k/ r7 J# h; @, Cp1 (polar p0 (- pang pang2) (/ DR 2.0)) & _3 V! z+ y! L
p2 (polar p0 (+ pang pang2) (/ DR 2.0)) 5 t3 [0 U7 O. ~1 n5 E+ O
p3 (polar p0 (+ pang pang2 pang2) (/ DR 2.0))
: K2 D0 Q# W4 U5 eent3 (entlast); This is the tooth p-line 2 x9 j0 t: `/ V1 q+ P) [9 k$ u# n
); setq
. }7 r6 v# s% b7 A* w(command "ZOOM" "W" p3 p1)
1 D0 P! o8 B% ~! p5 @(command "CIRCLE" "0,0" "D" DR) ;Root circle
# |/ c# H3 p5 }- V(command "TRIM" ent3 "" p ""); Trim the root circle ( R9 R5 v$ L8 b2 d! l
(command "ZOOM" "P")
4 \1 b( F) s) l: u3 a0 ?! @2 H# t(command "LINE" p0 p1 "") / h! T+ V" p: x
(setq entl1 (entlast)) ; _' U5 I" z* A+ M3 j
(command "LINE" p0 p2 "") 6 ]' q8 t/ a s) }0 t7 j3 N/ G
(setq entl2 (entlast))
" y2 w6 x: |8 [1 ^5 A(command "TRIM" entl1 entl2 "" p3 "") ; r! a2 x o' `0 v. F0 W
(entdel entl1)
# i4 n! T% y3 Z2 w(entdel entl2) Y0 b+ s* U# V
(entdel en) " \- L9 f; {9 z/ Y* U( C7 @
(command "ZOOM" "W" p3 p1)
- H; e9 M, X* j( c; Z; [, k% y7 p6 G(command "PEDIT" p1 "Y" "X")
1 o, C$ O) C6 s# W/ T' `8 |+ S$ f(setq en1 (entlast))
' S3 \, k. e3 j9 e( M9 `/ Y& I(command "PEDIT" p2 "Y" "X") * ?' O% i/ c. n
(setq en2 (entlast))
" e( E. ?- Z- }* T" s(command "PEDIT" en1 "J" midp en2 "" "X") z! p$ s# |. _& M, q$ G
(command "ZOOM" "P") . N* K. u$ X6 P" {+ G3 V* z2 `
(command "ARRAY" p1 "" "P" "0,0" N "360" "Y")
2 _. K0 P j9 z! j% v f9 [" \); segment 9 w& {6 f) l% H$ L* j
7 W9 ^9 B: Q- m1 L(defun c:sg ()
5 M/ g* i: A) h+ B. o; |# Q3 J) g(setting) 3 C1 |1 g2 J7 [3 J! A8 n
(spurgear) 9 ~. v' t3 W% k0 J7 z' W* a
(resetting) 4 h1 m! g* k# k- L; k, _
(princ)
) n$ y5 A' N! G( S3 J); c:sg
6 b- h' d) ^# V3 u* s5 H: Q
- I! ]9 |$ u0 T6 y(prompt "\n**SPURGEAR.LSP Loaded!") $ g3 Q: h, G8 S8 ~$ R
(prompt "\n Enter 'SG' to start")
- e, b* x( q! ~& j9 g" q6 ^4 Y;;;end suprgear.lsp |
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发表于 2008-8-25 14:22