(defun C:gear ()
' x. o! d3 q) U' L5 Q! ]/ G" C" Y1 a (setq numt nil g5 {. l* q$ {' p3 z2 W! p
diap nil
0 f( u0 N! g- ^6 X0 q1 y# Y2 r prsa nil4 | W: ?9 `* _. L- s
pnts nil+ ~! B; X' L( ~* V% N2 U
test nil
1 Z& t0 o, z3 l1 H4 g pwd nil& A6 X2 Q0 _ |& v3 b: e/ b
)! N, y9 Y0 A# n- j! Y G6 q
! q0 T- |. q/ D2 [ (setq numt (getint "Number of teeth:<24>")); b* Z6 b k6 a# V; f
(if (= numt nil)
- k4 A% y) L8 ?1 e$ m (setq numt 24)% t9 c" y2 {0 t6 o6 c) p1 M ?. h
)
8 A+ ?7 N( s u3 N; A/ ^! { (setq diap (getreal "Modulus of gear:<0.5> "))- o$ U4 a0 z. K, \' ^. L( U4 j8 f
(if (= diap nil)
& _& C. i# x/ X- ^2 m (setq diap (/ 1 0.5))
2 }7 I0 ]) T; X( s& D5 ^! C (setq diap (/ 1 diap))8 \( A* Z/ W0 Z6 W! X* \' V
)$ k, |) @" ~9 m0 j2 I
(setq prsa (getreal "Pressure angle:<20.0> "))
" |) m8 _) L' c% [; x* I (if (= prsa nil)
! F+ [ u' H2 U) q7 ] (setq prsa 20.0)) F6 R2 z, A4 \! r! r" c
)
/ w5 T6 z6 \. M. ]3 Q& W (setq pnts (getint "number of points on curve:<40> "))) ?# n4 X' f7 B' E
(if (= pnts nil)' F/ N' M4 m# L9 _8 r+ X
(setq pnts 40)
9 F. \# C9 w) ?( H; r )
* S+ ~* U7 R! |4 u5 ]! r+ C j' g9 E$ |
; (setq pwd (getreal "Please input password:"))/ h5 h3 S3 O/ j) @
; (if (/= pwd 8833)0 k" c @& F) M4 g7 P* q- w3 f
; (setq numt 0)
% b2 F" T9 H% N, r" m% a; )
8 @$ n, t/ R L) B; (if (= pwd nil)
/ n% L3 C4 S+ K, |; (setq numt 0)9 ~& l" f1 a( O$ {$ I) d& z- S
; )" x& A* X& o& E; i7 M
;
3 d5 b) G) |7 B; _8 [0 i0 J (command "osnap" "non")' s9 ^3 F( {5 y
(setvar "cmdecho" 0)
! c* o" C8 S6 w5 h* p" a (setq oldvar (getvar "pickbox"))
; n# a. N2 |- x0 c) \& T; ^ (setvar "pickbox" 0)
% K9 _* H4 L0 E( Z7 S (setvar "aperture" 1): L1 H) w9 k9 I
(command "osmode" "0" )& |0 a- _- R5 w( a/ G% _
;6 m! E% D. b/ U7 l2 l- @ ]: p6 ?
(setq prsa (/ (* prsa pi) 180.0))1 D6 C- f; R0 X1 R
(setq pitd (/ numt diap))5 z4 g4 J! W8 t2 O
(setq outd (/ (+ numt 2) diap))
. x8 J: @4 f/ t2 s: f (setq basr (/ (* pitd (cos prsa)) 2)) h* D. H+ Q/ T& o9 C
(setq orad (/ outd 2.0))
9 G- i8 D0 c1 P1 i; ~ Z5 j7 ^ (setq z (- (expt orad 2.0) (expt basr 2.0)))2 G3 C. x& J) W$ S. w3 @
(setq x (sqrt z))
9 \" p3 l* p+ m5 E' N (setq paodd (atan (/ x basr)))7 [8 H& B4 b, q- v
(setq incr (/ paodd pnts))
7 E0 F" n4 M6 ]$ e. e2 M$ G7 s (setq p 0.0)9 `& H9 g% y2 Y$ r# ]
(setq pitr (/ pitd 2.0))
9 R, b# A5 i; @. ? (setq pang (/ 360. (* numt 4.0)))
+ L/ r h" Q& M- l/ x' k4 t+ r (setq pang (/ (* pang pi) 180.0)). e; a0 d1 b( a$ }: v g3 ?
(graphscr)
6 A5 _# c2 W/ U3 W' X (setq p2 (getpoint "center of gear:"))5 u, V/ P& Y. |- ]
(setq y2 (cadr p2))
9 x7 f$ ]; [, x/ C, T+ W' h7 D2 q (setq x2 (car p2))
3 J0 w0 m4 ?0 {- T (setq r0 (/ (/ (- numt 2.5) diap) 2))4 j. n! o; j4 c+ a5 ~
(setq r1 (/ 0.2 diap))
' \3 T- W8 w! a7 k7 [5 {3 t (setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1))))
& Z9 v! x- E7 L (setq ang0 (/ (* pi 2) numt))0 O0 H2 F: P9 y+ d$ l
* H5 ?! w- r" T) ~( r (setq y5 (+ y2 basr))+ Y \. @! d7 j# e3 {; U* l
(setq p5 (list x2 y5))
0 y, G& S# G6 \ i( p- N7 d' G (setq y55 (+ y2 r0)). a0 F0 E8 v" m3 C+ F
(setq p55 (list x2 y55))# \* Y7 z; b" h1 }8 B# ^
(setq p88 (list (+ x2 2) (+ y5 2)))
3 d' ~ W8 b" ]# b' }, k8 j( K7 N8 N (setq a3 (/ (* pi 5) 4))
+ x1 h, D9 J9 h1 k) O5 o; G (setq a4 (/ pi 4))
4 ^ Z" A( x, s' n4 P* z( E1 s (setq pz3 (polar p2 a3 (* orad 1.5)))0 K7 O: X9 @: n$ _, m1 L7 z5 H; T, K
(setq pz4 (polar p2 a4 (* orad 1.5)))& T8 D$ Y3 V) u8 }8 v
(command "zoom" "w" pz3 pz4)
7 k& P0 K9 W& r, S; H. V$ S$ e V- n+ ^, N;
' c! i, A$ O' ?7 Y* A7 k (setq clay (getvar "CLAYER"))6 @: u3 w. z: j- L
(setq sblip (getvar "BLIPMODE"))
3 K. G* {7 o" W- {- a. }3 A (setq ts (tblsearch "LAYER" "CEN"))
( }: H" n: l% j* K+ _ (if (null ts)6 Q5 ]+ r6 R* }$ a( O
(progn
" ?' I8 _ n; ^; Z+ ]0 s6 @6 H (prompt "\nCreating new layer - CEN. ")
/ W: z2 T5 W! J! q7 _) ^" j (setvar "BLIPMODE" 0)
4 B4 t. R& Q( D6 ?2 ^! O, v (command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "")
5 s$ E/ v( I6 g+ a) S$ E& I2 [, j )
+ Q1 ~2 p3 Y9 V6 y5 r0 n) s (progn- W7 y; v5 G' E8 [# o# p1 O
(if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" ""))
+ ^; b/ m: ?4 X) u! f" ^1 b$ A- r/ X (command "LAYER" "S" "cen" "")/ b5 P% C9 h7 c' E& O8 o
)1 q. I# {& b6 d, v; p& D$ k5 V
)0 J* T& `2 N& N/ p: N; p" d
(command "circle" p2 pitr)
( c: v4 s3 j+ U- w4 I (setvar "BLIPMODE" sblip)
. Q& n5 K( [' P& p (command "LAYER" "S" clay "")- N: Z; G* c' e- W4 e( W1 O
;
- y1 m' {: M; k- G. P H+ Q (setq a1 (- (/ pi 2 ) 0.1))1 ^( ?! t1 {( _. g) v& m' p+ m
(setq a2 (+ (/ pi 2) 0.1))
% z& E' B7 Z: }! J# L2 {* E (setq pz1 (polar p2 a1 basr))
4 H/ a0 f* O7 o, j2 p0 q (setq pz2 (polar p2 a2 orad))* p2 e& G8 E, s
(command "zoom" "w" pz1 pz2)( G$ p# A0 u& M3 i" y& F6 o' h
(setq s (ssadd))
, B* V2 U0 D9 U% w- o9 x5 X7 \ (setq le (entlast))
" ], O( w3 w8 F4 n (setq test 0)7 u; ~+ c) F# N% l' D
1 D; m0 A' @/ A# e& i- I (command "pline" p5)
4 A3 V2 M3 X4 [4 F (setq p (+ incr p ))
8 K! j. f- a o! R1 I& \. R& \ ~) i (while (> pnts 0)
, ?! C/ N7 b# s1 r8 I9 e (setq e1 (sin p))' ~) o2 t' Z$ c( o
(setq e2 (cos p))
6 J9 b P" v. e3 A0 }9 R (setq e (/ e1 e2))
* B7 F/ y$ |6 _, e2 p& Q- A (setq j (- e p)). H# A: D; L* ?
(setq x1 (* (/ (sin j) (cos p)) basr))3 C7 s+ p$ d: b9 O F
(setq y1 (* (/ (cos j) (cos p)) basr))' C3 x6 O' B8 ^* a8 P
(setq x3 (+ x2 x1))
+ }9 f5 r K% R9 q- l (setq y3 (+ y2 y1))
% o1 {6 J- h$ ^ (setq p3 (list x3 y3))
( a* P, y! |7 D, _ (command p3)& t2 s* P# Q* Y; A+ \( c# a3 a/ R
(setq p (+ incr p))
4 T `2 C6 I- {) X& I2 d8 v* N) h7 p (setq pnts (- pnts 1))
1 q# Q% K" ~( u P/ r2 r( t- K (if (/= test 1)) R1 N. N; q% q( N3 o* X j
(progn
1 w k, R/ q' d+ w. M, I% I) y (setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))( s0 c: l" A C l
(if (> hyp pitr)& Q7 B2 c$ s) Q! i
(progn
# _. j5 S% K$ v$ e2 A/ C (setq pint p3)
; T! q1 f0 w4 m- P (setq test 1)
0 K H# f2 H9 g, g2 B )
5 U! ]9 q; |$ Q# b w )
8 c2 _6 v" f6 O );endif3 r- n5 k6 W: A j3 d
);endif
& ?2 l+ N; Z* x- ~& f )
) j3 s* j$ J8 |3 M5 ^! q5 \1 Z0 G (command ""); U6 w) C3 _1 u; z" w3 B6 X
(setq L2 (ssget "L"))
5 F5 i, C1 G/ @ U (initget "Y y N n")1 g7 e* x* [+ k* y0 j
(setq ans (getkword "\n Finish the gear ?:<Y> "))) j9 `8 e8 X. X/ n' ~- W
(if (/= ans "N")
3 t3 ]# m/ X6 b9 i. ]) I (progn6 h8 }3 e2 K& k
(command "zoom" "w" pz1 pz2)9 g8 C4 S! V7 h. Q
(setq p11 (osnap pint "inter"))4 c: T% q( {5 P
(setq ang (angle p2 p11)) a' p8 g9 p' o! }- {' w
(setq angi (- ang pang))7 }% M- O/ L( l; A1 m0 z$ C0 u* h
(setq p12 (polar p2 angi 1.0))& j! K0 A; L5 Y- V
;, t3 G5 ^ i$ I& m
(if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))! l# G+ @/ L- q x4 S& m/ p
(progn3 S4 r/ Z: P4 B2 @
(if (< numt 42)& g/ @2 Y4 {# T& Q# T2 U% V+ S6 g
(progn# P! q, k z3 S% D- e. r
(setq p56 (list x2 (+ y2 r0)))1 }6 u/ r/ H. I" D
(command "line" p56 p5 "")7 ]" c8 [" l0 C
(setq L33 (entlast))# }5 e2 p4 L" d4 V+ M+ X
(command "zoom" "w" p77 p88)
" E- B% C/ T/ h% D: n5 W0 c/ L (command "mirror" L2 L33 "" p2 p12 "")6 d. k+ z/ u J# \4 p& j. a
(setq adj1 (- angi (/ pi 2)))) }! |+ y0 b: w$ C% A8 r
(setq adj2 (- (/ pi 2)(* pang 4)))/ M$ \' k( O( c" k: g# Y
(setq p17 (polar p2 (+ angi adj1) r0))
/ E: v8 k& E" n, R (setq p16 (polar p2 adj2 r0))
' j/ {. K! ]( a# v' e (command "arc" p16 "c" p2 p17)4 p' l, B/ T2 H' t! J& g
) ;end progn
( W6 H1 ^; [0 V8 M H% v8 | G% P (progn( H5 q' q1 i) D1 h+ R% t6 r
(command "zoom" "w" p77 p88)7 G |& }. R& K( T2 r8 ]" j( u
(command "mirror" L2 "" p2 p12 "")
; }4 M \) \$ t! A; ` Z! r1 v. R (setq pL1 (entlast))
, p2 e. x7 k" T' V6 U' M$ m5 T (setq adj1 (- angi (/ pi 2)))
/ p1 Y6 w8 d& [. w' T (setq adj2 (- (/ pi 2)(* pang 4)))1 H' E( L! E/ e! Y7 X
(setq p17 (polar p2 (+ angi adj1) r0))
% \2 |, r P4 o2 d' T9 Z* d (setq p16 (polar p2 adj2 r0))
- m6 c- o/ e' w4 r0 h (if (> numt 101)
8 |- v& g2 l5 P ?/ V5 H( [7 J8 X (command "arc" p17 "c" p2 p16) N+ V0 k/ t7 l6 o
(command "arc" p16 "c" p2 p17))
$ p) H- W( d, s7 e& _0 E (setq arc4 (entlast))
9 R: H" _7 G7 E9 ?3 ^ (setq p171 (polar p17 0.7854 (/ 0.4 diap)))
) M) [% Z! L4 o9 `9 _- q (setq p172 (polar p17 3.9 (/ 0.4 diap)))
. U3 @0 H( L+ L0 i9 u) k (if (> numt 101)
' a7 v1 x' z/ Y4 w& @4 ^0 t9 K (setq p18 (polar p2 (+ angi adj1 ang0) r0))
- D) U* _) D. A8 f+ ^ (setq p18 (polar p2 (+ adj2 ang0) r0)))* ?$ B/ P# C, e0 ~) b3 q
(setq p181 (polar p18 2.3 (/ 0.4 diap)))6 b G( F4 R+ W
(setq p182 (polar p18 5.5 (/ 0.4 diap)))3 G. L4 Q6 |) g6 l: g5 ]
(command "zoom" "w" p171 p172)4 f/ f0 O3 F5 Z4 K1 E# b
(if (> numt 101). @2 M( z4 S7 A4 Y6 f8 Y# X7 T
(command "extend" pL1 "" p16 "") 2 H0 z/ k6 }0 m# k
(command "extend" pL1 "" p17 ""))! P; Q6 k8 Q P) d, t
(setq ang0 (/ (* ang0 180) pi))- L8 M d7 I2 }. c- y G* Z
(command "rotate" arc4 "" p2 ang0)
) Y% u# d: @6 R3 z6 F (command "zoom" "w" p181 p182)
" [8 k; a6 k2 I9 z# ]) i( `( u (command "extend" L2 "" p18 "")6 }9 a5 e- x, k9 y. z r
(command "zoom" "w" pz1 pz2)3 ~) O! Z) D! g& z: Z
(command "trim" arc4 "" p5 "")
( c. o3 g# q" U7 z7 k. X (command "erase" pl1 "")* f/ X& e: _4 e
(command "mirror" L2 "" p2 p12 "")
# e. ` O$ u- }, U7 X2 ]9 ^ ) ;end progn
& Z: @: F8 B' S; s, P* l$ q ) ;end if4 [7 g; Q: c/ Z3 ]' h: w* {
) ;end progn
3 D9 G+ Z& w+ Q. L) \ (progn - n, h ~( J# u9 o
(setq ang12 (- (/ pi 2) (angle p2 p12)))
( u/ Q. Q4 C1 l. e (setq ang57 (atan (/ r1 h)))
1 W& K z# E6 w6 o0 ? (setq ang58 (- ang0 (* ang12 2) (* ang57 2)))# M4 X) k+ }; y1 h
(setq ang577 (+ (/ pi 2) ang57))5 j5 @6 I- h2 K7 t3 }
(setq ang588 (+ ang577 ang58))+ v1 w C/ p: X
(setq p57 (polar p2 ang577 (+ r1 r0)))
8 z7 a: U+ _. F (setq p577 (polar p2 ang577 r0))
+ }+ q7 }% S; ]% U7 h+ w (setq p588 (polar p2 ang588 r0))
3 q1 y, A0 Q; L; a7 d9 U (setq p56 (list x2 (+ y2 h)))9 n0 v4 n1 |7 V3 j) P
(command "arc" p577 "c" p57 p56)% z6 f1 ^( n* E, `. v9 ]* P
(setq arc1 (entlast))" s8 n1 t1 _) G u8 G2 h
(command "arc" p577 "c" p2 p588)
p0 I8 |2 F3 Q7 D- r (setq arc2 (entlast))7 S( ^7 J F8 N1 ~: n$ h5 w
(command "line" p56 p5 "")& r" t- }* D7 L7 j- H+ _
(setq L33 (entlast))
- f, ]0 ]1 C: v2 m1 G (command "zoom" "w" p77 p88): E5 t0 s, \8 h" A
(command "mirror" arc1 arc2 L2 L33 "" p2 p12 "")
; C6 |7 |: i7 E3 }3 @0 |+ R; [* U (command "erase" arc2 "")4 F5 f5 Q4 P8 w# w* {: q2 f
) ;end progn 9 o8 E! C2 ]6 H! y$ P, `, O
) ;end if
: r1 k3 Z7 H& ?; 1 n' Y, v8 {7 [2 b1 y
(setq beta (angle p2 p3))) V7 I3 D0 ^7 J$ ^' S4 i
(setq ang2 (- (* angi 2) beta))7 d# ~5 _$ |$ R+ Q: [& T* O
(setq p15 (polar p2 ang2 orad))2 F, f/ _. e; L% q
(command "arc" p15 "c" p2 p3)
% P' ~: ?1 U& Z/ h (while (setq le (entnext le))
6 C7 I7 h" v- d; H (ssadd le s)- |/ V/ Z, a2 E) Y3 o
)
+ E) U% M( N' U1 g( K) }% y (command "array" s "" "p" p2 numt "" "")
" i3 S$ b y( e9 e. o; r9 [) J (setq q1 (nth 0 p2))- w# Z* Q; k% ~, w
(setq q2 (nth 1 p2))+ i) z7 H' u# l) z
(setq q5 (+ q1 pitr 2))
1 \2 C$ p; F3 l( `! i (setq q6 (- q2 pitr 2))
/ p$ N8 p& }* G4 b (setq q3 (- q1 pitr 2))
, J' t- d" y u (setq q4 (+ q2 pitr 2))
& f) N" v6 `" m! T (setq q1 (list q5 q6))
0 @9 v. ~8 T: [9 n, J8 o' S3 C (setq q2 (list q3 q4))6 x; d, k5 M! Y9 @- G
(command "zoom" "w" q1 q2)
N6 B; Z- K' j- K- G' N- i )
0 x r. W) s0 k! h1 I Q8 H )
& Z& N2 L6 p& `/ c2 Z& y0 K (setvar "pickbox" 5)
3 B0 g/ O) E6 ~) b; O (setvar "aperture" 5)
6 B( Q, m8 P) q (setvar "osmode" 37)1 R& P w+ G7 V; w9 b
& s% O, K. }4 o" v6 B# C (princ "Finish gear ")
. T) G* y' R# L4 t7 |0 L. J (princ numt)7 J" E* s8 k# U+ D
(princ "T")$ V- l# ?9 @' `& R. I9 n
(princ)
* A3 p$ k8 E# W' k2 S )
/ l6 \9 @6 t8 I) A9 y. b
' J! d; r' ?$ K0 P& g |