(defun C:gear ()
1 v2 e7 u' r1 y0 F+ P+ w (setq numt nil
, [3 t4 p$ X( D% p1 }$ U diap nil + d8 |% h6 M( V8 E% d$ U
prsa nil7 \ J2 o, N$ i# b9 d! h8 i" O* o
pnts nil+ n* u( i4 Y: l: m5 f# ]
test nil7 o; F& E J! o1 y# t
pwd nil
+ `/ i2 }3 L- I )
+ K- m9 S% \" Q! S8 N3 C3 b K+ ]; _3 s' A
(setq numt (getint "Number of teeth:<24>"))5 Y8 [. u4 g5 V6 w9 X" e
(if (= numt nil)
6 g& Y' `; b3 f6 S* h) J/ F (setq numt 24). }2 s1 ]7 j+ s: W C1 r
)2 E1 ]9 r4 [. n' V: l; i7 ~/ s
(setq diap (getreal "Modulus of gear:<0.5> "))6 S5 Y" x) ]6 X0 Y2 m# o
(if (= diap nil)
" ^1 a7 V) D6 n4 ]0 P4 H7 c9 F (setq diap (/ 1 0.5))2 x" N# h/ ~1 R0 M
(setq diap (/ 1 diap))+ G" f. t9 k4 A) i
)
' ?. }1 ^5 H( q. ]6 Q- Z (setq prsa (getreal "Pressure angle:<20.0> "))9 v4 S8 g9 m7 d# a0 C6 r
(if (= prsa nil)4 z5 {; [) P+ W- u) I4 A
(setq prsa 20.0)2 B- Q+ y% ?/ A. Y9 E8 Q# V3 ?& d! a
)$ r) q6 b% H! U2 Q1 b0 ?4 ~
(setq pnts (getint "number of points on curve:<40> "))$ o( j) k5 I9 B/ I8 ~" u
(if (= pnts nil)
: H6 l# N' K# r& V8 X% B* d (setq pnts 40)
1 ^! P7 H) ~( | )
* }: a6 J& }( h0 D# k- M0 E% q* t
- K) J( x( Q/ W4 n2 k( U; b( h, H" O; (setq pwd (getreal "Please input password:"))8 y" V) s4 a$ \3 P5 m) v( l& T
; (if (/= pwd 8833)
- W( `) k3 H! K7 X. ~1 r1 r+ C; (setq numt 0)4 p6 X! I1 q' ]; I) Y7 X- ?
; )
# }% e4 q( i/ M; (if (= pwd nil)
# W. y0 p' b3 N/ |! y$ H, A; (setq numt 0)
. v% e0 Y1 k% t; l8 Q2 u0 n; )) i: q9 z9 K& r# j1 Y) _
;
" [+ E+ J3 B" }; U( i& E (command "osnap" "non"): z9 q, h2 Q% r6 y3 w
(setvar "cmdecho" 0)
$ q) t" z3 Q% X" T (setq oldvar (getvar "pickbox"))
) W: {/ H2 B D) h3 X (setvar "pickbox" 0)
* I4 W0 d7 c( ~( k% S$ X4 S9 c( ]$ h (setvar "aperture" 1)5 C" f% _" k2 k1 Y! z$ t0 F
(command "osmode" "0" )
) f* n, P- y8 B1 m6 J( H9 G;
$ F* n$ `3 c+ S; N (setq prsa (/ (* prsa pi) 180.0))
7 W" u* A* J# R L) R! t2 j (setq pitd (/ numt diap))
/ p) K: L- |* @; j1 l (setq outd (/ (+ numt 2) diap))( e' R$ p. W! a# B O9 P$ W4 k+ c8 J
(setq basr (/ (* pitd (cos prsa)) 2)); J m6 ]- @+ t) G
(setq orad (/ outd 2.0))
" y+ o& }! Y0 ` (setq z (- (expt orad 2.0) (expt basr 2.0)))
: ?$ E* t! t4 o! l" u b (setq x (sqrt z))
! t" t* u$ L' n0 B6 r9 w1 ` (setq paodd (atan (/ x basr)))
1 e6 _8 N% h& m X8 S! K$ U; N (setq incr (/ paodd pnts))% P, H- n: K e& r/ C
(setq p 0.0)5 ~' w" B8 F* c' M. e# r
(setq pitr (/ pitd 2.0))7 [# ?& h7 c( T/ A, W& _
(setq pang (/ 360. (* numt 4.0)))' \5 L' D$ R1 E& X
(setq pang (/ (* pang pi) 180.0)) Q, \' \' Y9 E) N" h
(graphscr)# P* ~" F/ e3 `
(setq p2 (getpoint "center of gear:")); c( G. z% M7 `! @* o4 `& |; a
(setq y2 (cadr p2))! P, ?, q, T2 f' C( g
(setq x2 (car p2))9 F8 V$ E' r) B# n" V6 j/ v
(setq r0 (/ (/ (- numt 2.5) diap) 2))
b7 p. P q: Z! m o9 x: a (setq r1 (/ 0.2 diap))6 q" p7 k7 ?) g7 v3 t
(setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1))))) p5 S/ n& V) Q7 _, u7 a8 g
(setq ang0 (/ (* pi 2) numt))' s, f- `9 ?$ e9 \( t1 Z
8 j( |7 u# K: `3 F (setq y5 (+ y2 basr))" ]( d: ~$ P% Z" m# A2 N7 k9 m
(setq p5 (list x2 y5))
% N# p! y# ^( w (setq y55 (+ y2 r0))( e) E' j' U1 H0 i
(setq p55 (list x2 y55))5 c+ t8 H. u8 C! p$ _
(setq p88 (list (+ x2 2) (+ y5 2)))( V2 y+ g2 x2 r3 t6 m9 A
(setq a3 (/ (* pi 5) 4))) L# e4 T9 F% z, W9 X, H% d' C0 S! V3 b
(setq a4 (/ pi 4))! z1 c! x2 T% m
(setq pz3 (polar p2 a3 (* orad 1.5)))
( R# X, g3 W0 d (setq pz4 (polar p2 a4 (* orad 1.5)))( X4 H8 W" P3 A( C$ j
(command "zoom" "w" pz3 pz4)
8 h) p( N+ [! G' M Q' F, g;0 D% V+ \7 V3 ^' _1 V
(setq clay (getvar "CLAYER"))
8 k" U M5 r( Z (setq sblip (getvar "BLIPMODE"))7 c& j( ], m* [- d
(setq ts (tblsearch "LAYER" "CEN"))
5 F. M* Y7 t8 z) I* c (if (null ts)
$ f8 G' q' o0 s (progn
9 t I: B5 }2 A5 \; S0 ~( ~9 ] (prompt "\nCreating new layer - CEN. ")
0 A3 g3 P, W; `2 [* x# m4 j (setvar "BLIPMODE" 0)
9 e* O% y# a& i (command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "") % ~: x2 u* L$ V
)5 H& I& z9 P9 ^
(progn
# U+ B! }, O8 ?* f/ m4 _9 J (if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" ""))1 C6 Q4 E9 g1 ~/ e
(command "LAYER" "S" "cen" "")
j! [4 j. X/ j1 G- l6 c )) K% x* a! E m# K7 U0 t7 x
)
) L/ }( a) M3 O/ b. V; c (command "circle" p2 pitr)- s$ K2 K: T) u/ T, J
(setvar "BLIPMODE" sblip)
. j/ X/ o7 O! g8 Z( _! D/ L (command "LAYER" "S" clay ""). [) _1 r& m( |4 A
;: R8 D% D( I* }3 P
(setq a1 (- (/ pi 2 ) 0.1))
0 ~ R3 W; Y7 ` (setq a2 (+ (/ pi 2) 0.1))
6 |8 `) g# C' {# x$ ], G: c" _4 N0 D (setq pz1 (polar p2 a1 basr))
1 J1 r2 [6 e0 X, R+ u (setq pz2 (polar p2 a2 orad))
2 u2 e( J* z1 a5 h7 R X( S( c) H (command "zoom" "w" pz1 pz2)+ t! x$ T q: ?+ E: ~0 f+ B
(setq s (ssadd))! a0 s+ ^4 T' }4 _: c
(setq le (entlast))" P' k4 x. Z$ U. w" X* k) O
(setq test 0)
y- c+ E$ u K1 d$ D" g) A* |, k3 M5 S; k8 A. B3 j- _
(command "pline" p5)" a! H0 c: t+ U6 e' C
(setq p (+ incr p ))
/ A3 s! N q% H; G' L% Z1 a (while (> pnts 0) \% V Q6 A( ?3 v
(setq e1 (sin p))
5 Q8 w* I; e R* W (setq e2 (cos p)); h% {8 X) `( _, Y/ T
(setq e (/ e1 e2)): r2 C: E5 D" t
(setq j (- e p))6 @" D# F5 H& e' ~9 ]" V$ w
(setq x1 (* (/ (sin j) (cos p)) basr))/ m, r+ I. k7 l" z5 T! ~
(setq y1 (* (/ (cos j) (cos p)) basr))9 @- D8 C1 O+ w: @1 \7 {
(setq x3 (+ x2 x1))
# }0 n: E. y% m, S (setq y3 (+ y2 y1))3 F, A; ]& c% E3 |1 j+ U3 Z
(setq p3 (list x3 y3))
! C4 n( J+ o$ R3 d1 w$ z) j, E (command p3) h. |- m A" c# K. E
(setq p (+ incr p))
8 c+ H4 [7 e) ]% d5 [2 ^& r (setq pnts (- pnts 1))
: f: w4 r/ W9 i% N, J4 Z r' D2 T (if (/= test 1)
5 P% c( m- u6 y0 r) ? (progn+ N; }" b$ Z' t# m7 k
(setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))
) ~: w* q: k! @ (if (> hyp pitr)
6 x; s3 J/ B( q7 f (progn
5 c5 {7 O- i7 r$ k4 J; d0 T (setq pint p3)
8 A5 a2 X* j, q6 V1 B9 J6 h* W (setq test 1)
. D% C* F2 l) F6 _; Q' @% }1 | )1 N% W A- V- E$ x# L; W
)0 W$ S4 u; V9 l/ @% t
);endif! I! o7 D" \6 M5 c7 ~% w
);endif9 h1 ~/ t7 G) [3 g) C, d8 z5 R7 C
)0 I# ]2 U. n7 V' o- b: s. c. @ S
(command "")
x; ]5 b( S# u( s (setq L2 (ssget "L"))
$ a4 _6 g6 N" ]% ^" L- H; A (initget "Y y N n")" E' q0 {3 F. M& T; H
(setq ans (getkword "\n Finish the gear ?:<Y> "))
7 z X* e/ T! G) V& a" K; c (if (/= ans "N")& q8 ?8 r4 D. f% o% x
(progn% k `: _( E* y' y
(command "zoom" "w" pz1 pz2)4 S) `+ u$ x3 E+ Y
(setq p11 (osnap pint "inter"))
/ [/ ?2 d2 A1 n% h' O (setq ang (angle p2 p11))
7 [9 N2 f% s, Q2 q7 ^5 j (setq angi (- ang pang))5 g& N4 M$ q1 q4 w2 G
(setq p12 (polar p2 angi 1.0))) w& P5 f" d( V8 E
;1 I0 C3 ], }; C$ e8 _
(if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))
) `! ?1 d9 k' D9 w8 y: { (progn
% v' ^( i! f: p( `9 { (if (< numt 42)6 |/ t. C3 [& q
(progn4 C) t0 Y( M7 f5 h' S( b5 t0 v2 E7 D+ P
(setq p56 (list x2 (+ y2 r0)))
* C% U' I0 q& y5 `* _ (command "line" p56 p5 "")
/ D3 k/ }0 y3 v- C) V! F4 I (setq L33 (entlast))
4 V& e _% g! m! m) [ (command "zoom" "w" p77 p88)& k K" n- \+ l% e2 _( m
(command "mirror" L2 L33 "" p2 p12 "")
8 ^- D0 v( h- y% U+ } (setq adj1 (- angi (/ pi 2)))
' L. k- b7 s) V# O( t/ A (setq adj2 (- (/ pi 2)(* pang 4)))
) J; N' ]3 R" U9 p5 V" s (setq p17 (polar p2 (+ angi adj1) r0))
: R8 v; `+ H: u (setq p16 (polar p2 adj2 r0))
/ J+ N. a" F3 Y8 k (command "arc" p16 "c" p2 p17)
( v3 ~/ ^/ B; Q$ h8 X0 A( J1 i$ ^ ) ;end progn" h8 S9 |' z3 ^6 P! e9 D8 O3 t) g
(progn
; |$ n, z7 w! e: ? (command "zoom" "w" p77 p88)
, o4 V2 W9 g, T" L (command "mirror" L2 "" p2 p12 "")' H& x: N, [# S+ d& r! }
(setq pL1 (entlast))
& O Z) Z& Q3 `2 V. z7 }! E$ e (setq adj1 (- angi (/ pi 2)))
( {8 Z: W- |5 J/ _; e- l (setq adj2 (- (/ pi 2)(* pang 4)))& ^& M$ U+ x6 @+ ?1 d/ V
(setq p17 (polar p2 (+ angi adj1) r0))3 E( h. N! C+ s0 q6 ^% a
(setq p16 (polar p2 adj2 r0))
+ [* v- o% Z) p7 M! [0 [ (if (> numt 101)
% g7 l* j/ q8 V" g (command "arc" p17 "c" p2 p16)
3 {. H5 w8 I- v6 `6 G+ J1 ~ (command "arc" p16 "c" p2 p17))5 J, ~7 C4 e2 |/ x, Q
(setq arc4 (entlast))0 ?: Z/ Z5 z, h" w' O7 ~
(setq p171 (polar p17 0.7854 (/ 0.4 diap)))
6 E* \2 O( X1 C: {: g% {' J/ t5 }. C (setq p172 (polar p17 3.9 (/ 0.4 diap)))1 W, W% |* R# k9 a/ x
(if (> numt 101)
7 W; u, h) A: Y$ ^* j) Y1 { (setq p18 (polar p2 (+ angi adj1 ang0) r0))
6 s+ e6 _2 S5 r$ P (setq p18 (polar p2 (+ adj2 ang0) r0)))% G& l. z' D, t- a7 v3 l
(setq p181 (polar p18 2.3 (/ 0.4 diap)))
$ c; X" a d, h" V, G9 L0 M (setq p182 (polar p18 5.5 (/ 0.4 diap))) I. t0 `$ r# _; O4 m8 Z5 d# n
(command "zoom" "w" p171 p172)2 j" k, s$ u* c, s0 G
(if (> numt 101)" I5 x9 T4 H! a
(command "extend" pL1 "" p16 "") 7 ? X2 n/ L# A
(command "extend" pL1 "" p17 ""))
% `" K1 w5 [1 Q7 i (setq ang0 (/ (* ang0 180) pi))
5 [5 }4 [( |, K W% N (command "rotate" arc4 "" p2 ang0)
- U! ?. i+ D8 Z) T/ J (command "zoom" "w" p181 p182)
% S) N9 O. b2 C2 k3 N, b! j (command "extend" L2 "" p18 "") o5 K6 X0 `8 k+ P
(command "zoom" "w" pz1 pz2), ]" ^, r. C7 Y# V$ c& J8 N
(command "trim" arc4 "" p5 "")7 k; I7 }, b+ o5 T
(command "erase" pl1 "")
1 X# u* k# q/ P8 N ^8 s' ~; v (command "mirror" L2 "" p2 p12 ""), m" z- b% W- T5 s: [* d0 z
) ;end progn+ ~ M( g( r: P
) ;end if, R8 W- u- u5 O. h4 y2 Z
) ;end progn. f' m5 w0 r8 o' O( j( j& e% j9 g
(progn
5 |( ?2 A7 ^3 a/ B: F (setq ang12 (- (/ pi 2) (angle p2 p12)))
: c+ C8 y n. N% Z3 @: ]8 a (setq ang57 (atan (/ r1 h)))
; p8 v2 {3 g) O1 m* n/ i (setq ang58 (- ang0 (* ang12 2) (* ang57 2)))5 p2 i L6 b0 I1 Y6 v& z- K' n
(setq ang577 (+ (/ pi 2) ang57))
' {7 v( F- ~7 K- o (setq ang588 (+ ang577 ang58))
/ T9 r' C+ s1 |5 p) v8 a+ ~ (setq p57 (polar p2 ang577 (+ r1 r0)))! t! T) T- N* w
(setq p577 (polar p2 ang577 r0))
; d5 o6 N* J% l* s! l# G+ s (setq p588 (polar p2 ang588 r0)) 9 [+ P5 B5 A) p
(setq p56 (list x2 (+ y2 h)))
8 X8 D9 y3 ]' e3 H; G" D (command "arc" p577 "c" p57 p56)% \/ V1 b7 U. M# M. A3 s) m
(setq arc1 (entlast))% I4 f5 N1 X$ O. _& o% M$ D
(command "arc" p577 "c" p2 p588)
& p: w6 V- q6 n (setq arc2 (entlast)) x& x6 g6 ~3 \) ~
(command "line" p56 p5 ""). t; ~- D. O* b5 T
(setq L33 (entlast))
+ y; A" ^. G, H! [ (command "zoom" "w" p77 p88)
' k, Y8 C0 I/ U (command "mirror" arc1 arc2 L2 L33 "" p2 p12 "")5 X, L Y% X+ B1 L; ~
(command "erase" arc2 ""); A7 S8 v$ V' f% J
) ;end progn
! {5 E- @; ?0 B/ @$ L2 c+ g ) ;end if1 Z$ c( W1 y: F" L+ l& R
; 4 L! m! V" P2 d" q$ `, |/ X" i) s
(setq beta (angle p2 p3))5 n& Y, A5 K( d# R, W, P
(setq ang2 (- (* angi 2) beta))
1 e1 B7 i- G+ ~8 X. c (setq p15 (polar p2 ang2 orad))0 w, X2 d$ m& B# B6 j' i7 X
(command "arc" p15 "c" p2 p3)" ]- m3 k+ }3 [: s0 f
(while (setq le (entnext le))
, g) S, g1 K P( n- {( b9 G (ssadd le s)# \4 y7 e/ s% e# P% |% Q
): k% i: O- z, K1 c
(command "array" s "" "p" p2 numt "" "")0 y$ q2 m2 J6 n4 j
(setq q1 (nth 0 p2))
8 c7 l1 F" E i1 R5 j& `% b8 C (setq q2 (nth 1 p2))
( t) n& H, @9 D! ]; y) f (setq q5 (+ q1 pitr 2))
3 M! w; x5 y) I0 ~# k( M6 z: p (setq q6 (- q2 pitr 2)), t, p) ^: ?9 K' H3 n
(setq q3 (- q1 pitr 2))
! b7 H7 p6 U2 l) _/ L+ n (setq q4 (+ q2 pitr 2)); m" A# x) I( p9 t4 T+ w
(setq q1 (list q5 q6))
- g" P; Y8 U# }% f0 o& n+ G (setq q2 (list q3 q4))
4 b% a; U3 Z {+ B- ^( L2 \. A7 [ (command "zoom" "w" q1 q2)5 {; _( C1 p; z( C# s$ ?8 q
)
" i$ j9 o/ R. j: P5 X' m5 a6 l )1 Y4 A" [& R6 @; [! h' m8 ~ j
(setvar "pickbox" 5)
$ S8 E5 t- j" Z! \. m1 N (setvar "aperture" 5)3 k% z# _; J' Z: \
(setvar "osmode" 37)7 \: L; D! U( v
. V3 [) G @& E. T3 y, h: ^ (princ "Finish gear ")
( a; \/ Y9 K6 }7 R7 ?" b (princ numt)
: n8 P" R' F8 ~# v9 _ (princ "T")
+ U+ C, s3 I& l! n4 M( D6 F (princ)
6 @$ z1 F [, a3 W2 V )0 y, t$ M8 J: l* p4 {
/ Y8 J! ?' t& p& x o9 y
|