(defun C:gear ()4 _' F. u% d6 N9 g+ J
(setq numt nil
( n4 `9 b) i9 ?- S% R diap nil + ^$ Y8 ^' n; _ Y' b8 E, `
prsa nil
, O0 J& R3 b+ I9 T0 ^7 v pnts nil
2 x' Z/ i5 j/ M+ F5 |$ S5 m2 P test nil
7 ~" F5 U: a. B1 e2 ~ pwd nil3 O9 ?4 R" }3 n# i
)
* ?; e' x# J& O* ?2 }' O5 |0 B
# X$ O. `9 R3 S* i0 i (setq numt (getint "Number of teeth:<24>"))
4 Z4 r W( G! @9 U1 k4 @ (if (= numt nil)
+ L, v/ U; V, ?4 r+ w4 d* }3 i (setq numt 24)6 q) H! a3 m k) ~" |5 w: Y
)* r6 g- ~3 _1 V# j$ {4 Z
(setq diap (getreal "Modulus of gear:<0.5> "))
) g/ S9 {* U W# I5 F (if (= diap nil)- p& j. Z: |; s1 T- e" S& E, X
(setq diap (/ 1 0.5))
. r2 k' K" m& b" ^ (setq diap (/ 1 diap))9 p2 _( H& M7 z! B* `
)
# ^# M7 k) |9 i. E (setq prsa (getreal "Pressure angle:<20.0> "))" E: S: c" M5 M2 D
(if (= prsa nil)
, q# i6 O, n4 ~) y# x' e8 ?7 L P (setq prsa 20.0)5 ]) M6 O* I. i1 c2 {& O) o$ I
)
1 B7 j3 ?" S1 a. ]! L: } (setq pnts (getint "number of points on curve:<40> "))
0 b9 s* g; J7 P. d3 A/ N7 D (if (= pnts nil)3 z8 J: x6 o0 y! [2 Z# y
(setq pnts 40) h+ {( Z% i' f7 y
)
; a# s/ }2 T, n, f: a/ j' ]' A1 U- ~: B4 n. Q
; (setq pwd (getreal "Please input password:")) U5 z6 {* {! o7 |
; (if (/= pwd 8833)' H% ]2 W3 n9 J9 K$ m
; (setq numt 0)
; k8 O5 M e3 q i; )
" H" x/ R8 P3 d+ ~/ P! m) I2 D- a W; (if (= pwd nil); Z6 g3 }* |- \
; (setq numt 0)6 U* @3 |# J) M6 B4 z/ a
; )
7 `7 i" B7 h0 E: Z;' j; _ c& a8 k* Q. J5 ] j2 q
(command "osnap" "non")1 A; O6 o3 ^) m4 r% t
(setvar "cmdecho" 0)8 q+ z0 V; [( `
(setq oldvar (getvar "pickbox"))! S' n9 g# L5 o& G
(setvar "pickbox" 0), X: {6 p9 N# j" I# D1 E
(setvar "aperture" 1)
/ g3 ]! \' R# d. V+ f7 I (command "osmode" "0" )) H. I! f- [& K; g: i1 s
;
4 f& _% e7 g, j* A k (setq prsa (/ (* prsa pi) 180.0))
* E+ Y/ G8 I0 q- N9 T5 I6 s. x& | (setq pitd (/ numt diap))
, b5 m/ F9 g' C# K; i4 r9 h (setq outd (/ (+ numt 2) diap))
; w/ [6 v. J7 T! }. n9 t) C (setq basr (/ (* pitd (cos prsa)) 2))9 _2 Z+ g+ @( o5 a
(setq orad (/ outd 2.0))
7 K8 s f, v* H1 D (setq z (- (expt orad 2.0) (expt basr 2.0)))
D% L& i4 ?9 Y' ~ (setq x (sqrt z))
: H5 n/ \8 M. n (setq paodd (atan (/ x basr)))4 g1 L% ^$ M+ }% L) O' V9 k; _
(setq incr (/ paodd pnts))- u; @' J! b' @. E' C+ c3 Y2 D
(setq p 0.0)
: N6 u' _! c7 m5 a (setq pitr (/ pitd 2.0))
' s7 e- j/ T: i# a0 W (setq pang (/ 360. (* numt 4.0)))
& N; r; M: ^: T! z (setq pang (/ (* pang pi) 180.0))2 Z( l. P6 S0 i U7 M5 z
(graphscr)
" o+ |; m0 o8 @ (setq p2 (getpoint "center of gear:"))
2 c, u2 `9 ~9 v5 P8 U) T" w/ K (setq y2 (cadr p2))
* I) l# v' C% x. D# A (setq x2 (car p2))! \ P! I8 |7 k$ M' l6 E: n
(setq r0 (/ (/ (- numt 2.5) diap) 2))
4 g& ~: q" `* M) T) ?. } (setq r1 (/ 0.2 diap))
) k$ Z: {; v) w/ |. q5 P (setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1))))
- X# |$ w4 O- H2 W4 J+ I G8 [ (setq ang0 (/ (* pi 2) numt))8 }+ [6 F! Y) j0 C: @9 A
' r L3 S$ n, x5 c (setq y5 (+ y2 basr))
$ |" E" g; d' H/ y (setq p5 (list x2 y5))
& y# u5 U6 g6 l) A; S8 d$ U (setq y55 (+ y2 r0))
/ ?# i: |6 k* J! z' E (setq p55 (list x2 y55))% u. u! J! l! _
(setq p88 (list (+ x2 2) (+ y5 2)))
& f- S4 ` A3 w. f" R0 T& o7 p+ G1 N (setq a3 (/ (* pi 5) 4))
4 _( U6 [. n, p+ n (setq a4 (/ pi 4))# z; c' _& p; Y7 O
(setq pz3 (polar p2 a3 (* orad 1.5)))
4 c$ x; N3 H5 [% B6 G) y (setq pz4 (polar p2 a4 (* orad 1.5)))
4 f: ]0 h, l$ Q4 |( Y+ w) p$ Q& d (command "zoom" "w" pz3 pz4); K% Q" H+ g1 }" o" }: P
;
3 V5 y( D+ u+ u: a3 i. F. g: N/ ~! { (setq clay (getvar "CLAYER"))
/ J" R" Z3 u/ u) Q: P& g' o (setq sblip (getvar "BLIPMODE"))) Z% D1 N0 a1 L( R0 e2 Y' R1 ^5 m/ u$ j
(setq ts (tblsearch "LAYER" "CEN"))
& A( r" ^9 v3 o$ j H4 I! B8 U% P# _ (if (null ts)9 `; Q) @4 N1 ]8 e2 t8 p
(progn
& u* D, A& `4 j (prompt "\nCreating new layer - CEN. ")
& d& m# \$ l' h x" E% W3 S (setvar "BLIPMODE" 0)
( \0 a: t# C. _1 q (command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "")
# ~" r0 M5 j: |" Z- ?4 E1 n )# G& e6 a$ x. l9 ^
(progn
3 E* _4 F/ J3 e. k (if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" ""))
& C4 [3 B3 e8 }. i; e (command "LAYER" "S" "cen" "")3 s+ h. l! I1 s. @/ W$ y
)7 ?" a" p2 \) f8 P% \
)
8 c. v2 e( o: K3 V z& w; }# h (command "circle" p2 pitr)7 ~0 K" F# X6 |/ K; a
(setvar "BLIPMODE" sblip)" H$ t7 g; g7 X- X7 E
(command "LAYER" "S" clay "")3 o% X; a, J. E5 k# w
;. Y2 {4 `+ F0 Z' u5 h P
(setq a1 (- (/ pi 2 ) 0.1))# {- y2 D, U7 Z6 e1 A- y4 K
(setq a2 (+ (/ pi 2) 0.1))
4 M4 ?1 a2 v2 `) U: C (setq pz1 (polar p2 a1 basr))
' B9 y4 J/ U% |7 z. N& N3 \( X$ A (setq pz2 (polar p2 a2 orad))! r; w& X( z% D
(command "zoom" "w" pz1 pz2)
$ j8 {! n x) W: e0 l9 p6 T (setq s (ssadd)); n4 B6 u& K! C$ t/ A: z" J
(setq le (entlast))
! J4 f9 q, ~8 \; i( v& g7 d7 j (setq test 0)
+ X6 G7 U; c9 g2 H" V/ B7 f' m4 |. @8 i; u0 J
(command "pline" p5) S' m% Z& J3 E1 F
(setq p (+ incr p ))2 U9 N% [3 d4 s. f2 I
(while (> pnts 0)" i1 S5 V3 o" d+ y
(setq e1 (sin p))3 E) n5 R$ }& K+ b" I$ D/ \. j2 B$ D
(setq e2 (cos p))
( }3 C; A! N0 X& c- T! J( U5 o (setq e (/ e1 e2))! j* e, V( C- f$ z+ A; A* d
(setq j (- e p))4 F% A: P" i$ z: H: c
(setq x1 (* (/ (sin j) (cos p)) basr))
" ~3 G5 p+ P/ z' H% m( ^0 j& z (setq y1 (* (/ (cos j) (cos p)) basr))
; M! Y* [: I6 o8 Q+ u6 w4 F (setq x3 (+ x2 x1))
) D- l; S( ]' T0 p1 M0 p, r (setq y3 (+ y2 y1))( L) Y7 d& C0 y. ^
(setq p3 (list x3 y3))' P# X+ i- @6 b& f; w# @2 d* m) l
(command p3)/ V8 @* H0 S0 J( O! p* o& |/ H) F
(setq p (+ incr p))
/ h& f) G5 i- B4 R3 ` (setq pnts (- pnts 1))
# n/ ^( A0 M% H- a (if (/= test 1); L( B% b6 m( n+ X. c$ l
(progn
) W& c, b9 B2 t5 q, M (setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))
6 N; i' g/ Q1 F+ t) h (if (> hyp pitr)
% j0 K/ U+ R9 H l (progn
; f$ J' K" S) W# `% m (setq pint p3)
9 E3 |) p/ ~) {: X9 D! I# P (setq test 1), ]% M4 R# z5 c3 z( o6 A& {
)' r+ J/ b2 W [& W; Q/ a% q q
)
/ \9 d8 B0 X5 l9 V7 _% c% q );endif5 x; L3 s7 m6 m( v5 W% S
);endif N3 T" `' T" S. Z* ]6 v
)
/ {8 F5 r3 c* M# l! t! r (command "")# i% j8 ?- {1 k( h
(setq L2 (ssget "L"))
6 N: W; D. z/ V! j (initget "Y y N n")* G% E! i4 L# T6 x& z0 f& o+ s
(setq ans (getkword "\n Finish the gear ?:<Y> "))
: j* Y/ U& E+ E' _' K (if (/= ans "N")
4 m7 I8 U- b E' M; b. C2 } (progn( b+ i6 d6 n" l9 L/ b/ e
(command "zoom" "w" pz1 pz2)' X4 S: ^. P. _- g# T4 k" M
(setq p11 (osnap pint "inter"))
1 C* m R5 @; s. e/ E% V (setq ang (angle p2 p11))
0 B0 h8 v) g( @1 T5 G- m o (setq angi (- ang pang))
$ T4 u' z% v% @ (setq p12 (polar p2 angi 1.0))
9 S" x+ {8 B1 T3 u;9 s& }: F/ J, R
(if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))8 f0 x2 S. E: a* G- u- x- w. Y
(progn U( N% o3 s+ y5 Q7 n
(if (< numt 42)8 z4 c. f5 b- ]
(progn2 H7 t3 d# F# b w6 R5 k
(setq p56 (list x2 (+ y2 r0)))0 {6 q3 }. C0 O5 b" ~
(command "line" p56 p5 "")
" M7 e) S9 G6 T* d (setq L33 (entlast))& X! B9 r7 {7 i6 j. m7 f, a
(command "zoom" "w" p77 p88)
' W) M3 C; G3 y- T6 p s1 U (command "mirror" L2 L33 "" p2 p12 "")
# s: ~5 {6 W; b (setq adj1 (- angi (/ pi 2))), D9 p" Z% W+ b9 L% _$ f! f$ ]
(setq adj2 (- (/ pi 2)(* pang 4)))( k& I I; s0 c: G- G' Z
(setq p17 (polar p2 (+ angi adj1) r0))
2 G/ R( n/ E) B+ e (setq p16 (polar p2 adj2 r0))9 Y+ T0 w l; _- L0 N/ ~! A
(command "arc" p16 "c" p2 p17)
5 K( b/ {0 f) N5 w" k _ ) ;end progn4 e% k) Q Q- o
(progn6 A! t* N5 [/ P$ S q5 e9 z
(command "zoom" "w" p77 p88)
+ E" U6 j; J" ?% N/ s (command "mirror" L2 "" p2 p12 "")) u" ]! K, t# D1 T5 H
(setq pL1 (entlast)) 2 [! L2 s. I' Q& y# J9 t& S8 p
(setq adj1 (- angi (/ pi 2)))
Z, I- a- b2 e" V (setq adj2 (- (/ pi 2)(* pang 4)))
7 K8 \( n6 P% m: ?1 A: v( E2 b. ]- l (setq p17 (polar p2 (+ angi adj1) r0))
& A# R; Z* d3 h: q9 @1 ]: T# q' z (setq p16 (polar p2 adj2 r0)) i+ `2 x0 x( R$ z& v( Y
(if (> numt 101)* }2 j: Q$ ]* L+ ~
(command "arc" p17 "c" p2 p16)
3 I( s( N: P3 M0 d% R (command "arc" p16 "c" p2 p17))
# \5 k& z( q# A9 @4 g# a (setq arc4 (entlast))$ i. H. W2 h4 }4 s
(setq p171 (polar p17 0.7854 (/ 0.4 diap)))
2 e% D' m- ~4 `" u (setq p172 (polar p17 3.9 (/ 0.4 diap))), ^; X E0 U- @$ C, E
(if (> numt 101)9 ^* N$ r: ]# |0 o+ i
(setq p18 (polar p2 (+ angi adj1 ang0) r0))
7 `+ C' A8 Y1 H$ u (setq p18 (polar p2 (+ adj2 ang0) r0)))& {7 b( T2 |+ n0 C
(setq p181 (polar p18 2.3 (/ 0.4 diap)))
) ?1 _ s" t. x. M (setq p182 (polar p18 5.5 (/ 0.4 diap)))
1 B( A' x8 [+ k3 X& A/ Z E (command "zoom" "w" p171 p172)
4 ~, A" T, n& B6 `' _. M (if (> numt 101)$ \/ K+ X$ R E4 n6 Z/ |* m. h
(command "extend" pL1 "" p16 "") % a7 ~1 t2 N' y, x1 _
(command "extend" pL1 "" p17 ""))
' L" }1 P9 Q9 ]- ?4 f" k: H) O (setq ang0 (/ (* ang0 180) pi))! r( o2 W( P8 O: d6 {7 I7 }
(command "rotate" arc4 "" p2 ang0)1 J7 L, y; y8 h3 ^9 F* s8 l: d
(command "zoom" "w" p181 p182)
. X: k4 `: O$ P' F; }% f (command "extend" L2 "" p18 "")5 J3 v$ z* p$ Y0 A( D K1 Z4 C
(command "zoom" "w" pz1 pz2)) ?; `( i" w- C5 s" U; D
(command "trim" arc4 "" p5 ""). w9 j6 z( c3 Z2 [* V6 r
(command "erase" pl1 "")# |! U% R& M' k0 v$ R' a
(command "mirror" L2 "" p2 p12 "")0 F# H) F' V+ R! ^
) ;end progn; L& ~: r2 ^6 h0 p" d, A- Q
) ;end if; R0 R' P- U* u( @4 ~! ~
) ;end progn
5 P4 a( S* T5 o7 g) l6 ?2 \9 T (progn 9 l0 D1 o* [: t ?/ \% {& h3 _
(setq ang12 (- (/ pi 2) (angle p2 p12)))
3 O5 u# s9 }, F) h (setq ang57 (atan (/ r1 h)))
! N$ S6 W4 F5 U (setq ang58 (- ang0 (* ang12 2) (* ang57 2)))$ \6 a- `/ L; o) b9 X2 ^' B% A
(setq ang577 (+ (/ pi 2) ang57)). e4 v: G& G: T' n5 S% i% k) c
(setq ang588 (+ ang577 ang58))* @4 m) N( Y" H# i' t
(setq p57 (polar p2 ang577 (+ r1 r0)))9 Q$ ?9 R& S% M" Y. G
(setq p577 (polar p2 ang577 r0))
' d8 f* u8 w; g2 ^; a# e (setq p588 (polar p2 ang588 r0)) $ H6 {( _: p& x- e6 j0 X; Q
(setq p56 (list x2 (+ y2 h)))7 o$ h8 p+ y; k' Q+ B7 k. H) ]
(command "arc" p577 "c" p57 p56)" \6 J1 S* u" {+ v+ C/ B
(setq arc1 (entlast))/ I6 k9 N" M7 `' W+ B3 B8 h
(command "arc" p577 "c" p2 p588). E. p( |: K8 e% E* @7 R' {1 m
(setq arc2 (entlast))
. f4 L; n6 F+ r j) ~- l4 X (command "line" p56 p5 "")8 d. r6 k, s) p \; O
(setq L33 (entlast))
# u4 m U p Q" g (command "zoom" "w" p77 p88)
* R/ F" L0 V" M! v; Z! E2 l$ ~ (command "mirror" arc1 arc2 L2 L33 "" p2 p12 "")8 z' A% i# F8 _+ @
(command "erase" arc2 "")/ R: v; A1 K/ Y/ A
) ;end progn 2 \/ Y6 b6 c P' r" T$ Q
) ;end if0 k" h" a T8 J! d# L7 ~* s0 e
; $ p( N- {5 c U2 _0 q
(setq beta (angle p2 p3))
8 n9 O8 |0 g& J: `4 Z/ I9 b! D (setq ang2 (- (* angi 2) beta)): e9 g8 ]2 o+ g3 a% c6 q
(setq p15 (polar p2 ang2 orad))
) p' d4 k. d/ i1 h (command "arc" p15 "c" p2 p3)- {7 u) a$ \6 D% d& V8 V' `% x
(while (setq le (entnext le))
4 K1 d( n" f" H2 A (ssadd le s)2 B1 I* k' x& Z k6 R% l
)
0 w2 |! _ |* T (command "array" s "" "p" p2 numt "" "")$ s W3 T3 e4 B/ g& {4 r
(setq q1 (nth 0 p2))7 H) r7 E1 P; O+ W
(setq q2 (nth 1 p2))
0 H' v3 t. v1 b2 Y3 G5 v# I# q (setq q5 (+ q1 pitr 2))) Z/ S$ C) }0 E7 x
(setq q6 (- q2 pitr 2)). m9 l' _) k! c: _& n K3 M( y8 W. a2 K
(setq q3 (- q1 pitr 2))) t5 ?8 M1 l& [+ A+ V
(setq q4 (+ q2 pitr 2))
( @: o( w. k: T0 I+ V" R7 R* Q (setq q1 (list q5 q6))4 v- c' Y5 e L6 {8 U* h7 `# w0 ~
(setq q2 (list q3 q4)), F9 f* V. p% L
(command "zoom" "w" q1 q2)3 h9 c4 E ^. w G- ~! A
)5 X: f. ]. ]2 O! [7 v5 r, o
)' ?, h- z& A; s( {% }: d* H
(setvar "pickbox" 5)
- X2 N2 L6 L3 U* Y/ Y2 } (setvar "aperture" 5)
W$ V7 O* n- i: [ \4 Q* h. q (setvar "osmode" 37)
}7 k9 F- u$ T2 D8 C4 t
0 A1 i$ b1 G. D2 _9 u: Y (princ "Finish gear ")
h: b( I1 a6 P) q! j6 B6 _7 X5 `" S (princ numt)' I0 S# `6 K% r8 ]( `( R; i( @ R! |
(princ "T")
; M3 I+ B2 _# O9 o (princ) o6 h4 ~4 Y1 k/ r2 e
)
( S0 h; i7 H, O8 _! H8 s: _; N; A3 j
|