(defun C:gear ()
5 x/ U( n+ Q8 ~. G (setq numt nil. v( \& W& D! p: `
diap nil ; r. D/ u \/ r- E; F) m
prsa nil- `0 l+ K1 L9 n4 l) S
pnts nil9 @# E( C) \/ Y# T. j& y% w
test nil
7 p; p% f: ]2 P+ a8 f pwd nil9 t6 z1 q( d7 J3 x& e( _5 `; l
)1 v5 n, u9 n7 G9 O" a5 ~5 g
4 Y9 Q- ]" T5 M; D7 w3 j2 f. r# S7 l/ W (setq numt (getint "Number of teeth:<24>"))+ q& p; _) a- x$ @# T
(if (= numt nil)
0 o5 C. J: Y, K' r (setq numt 24)
* Y# {* [0 k! N, u5 N! y )
5 ]9 @% n3 X6 [) w+ K; { (setq diap (getreal "Modulus of gear:<0.5> "))
' |- i6 \& s0 U (if (= diap nil)
- o w( g( \4 y4 i5 E/ f (setq diap (/ 1 0.5))- I Z) L. B* a- X2 s
(setq diap (/ 1 diap))
9 O& q) `% s3 Z! a )
- L4 u2 [1 L9 U (setq prsa (getreal "Pressure angle:<20.0> "))
' q' x( d$ n- F$ u8 l u9 ` (if (= prsa nil)9 k& a8 }- d# @4 ^
(setq prsa 20.0)* G8 f$ ^: W% x/ l6 R, V3 F
)
7 n' y3 A0 W' c' x1 |8 p) K& U* E+ j (setq pnts (getint "number of points on curve:<40> "))
) m( P5 E# W; S3 b1 H* }" [$ Q# y (if (= pnts nil)
# w/ e' p8 K- Y: R) m6 W (setq pnts 40)9 r: J: f0 i" I5 |8 {+ N* E
)
$ H0 a) G9 {8 A/ C0 F Y6 u4 x7 K. z2 e5 i/ }1 R
; (setq pwd (getreal "Please input password:"))& I! j% b$ ?( N( g: M7 W$ A
; (if (/= pwd 8833)
" D, O6 p7 N+ ?9 V" X- v8 k/ Z; (setq numt 0)5 H- K1 ^; D5 U* G1 e; F! x
; )
% c( I- y7 |8 d) l' h" {; (if (= pwd nil), n8 s5 {6 a& Z, a% m3 B1 I8 d
; (setq numt 0)
& m! ^# B+ W: ^: N" E3 H8 t( a; )+ t" c" q! d+ n7 i( S
;
$ N- e0 D* ]' p! h8 ^ (command "osnap" "non")
9 ^7 G6 n8 B6 C. E (setvar "cmdecho" 0)6 d C3 U, X/ Y$ E3 `7 j
(setq oldvar (getvar "pickbox"))$ L% g( i; f2 {3 V. W2 G( I8 ~
(setvar "pickbox" 0)
K- s: g7 U4 Y* T6 O" u (setvar "aperture" 1)
! p# J% a* B* ?0 ?% T8 B! [8 G8 f (command "osmode" "0" )
7 V( }' `. x* ~' B& |;
( ~: [! L* O( Q (setq prsa (/ (* prsa pi) 180.0))( {7 S3 {8 V- I& `8 E9 r
(setq pitd (/ numt diap))
/ M' r3 C$ T8 D; q: I/ d; J: p (setq outd (/ (+ numt 2) diap))
5 c8 u- p1 `* ]: m/ s (setq basr (/ (* pitd (cos prsa)) 2))
9 s% q, y$ k4 Z (setq orad (/ outd 2.0))% W5 T- W$ ~( k7 R6 h) p/ _: e
(setq z (- (expt orad 2.0) (expt basr 2.0)))
* @# D$ W& ~5 Q9 ]: T- } (setq x (sqrt z))
" z+ {1 D" [ b (setq paodd (atan (/ x basr)))
( x0 l. ?9 \+ `/ \1 m$ p8 ] (setq incr (/ paodd pnts))( F- M2 u Q1 d5 \
(setq p 0.0)1 P% A5 l5 B1 W+ A- A4 O
(setq pitr (/ pitd 2.0))
9 B5 L! A& [! O$ e' l% D) x) D% v% v (setq pang (/ 360. (* numt 4.0)))
1 h9 ]: p0 ~/ ] (setq pang (/ (* pang pi) 180.0))5 c* Z$ A5 j7 Y% G0 R
(graphscr)0 W2 Y, [- ?2 D5 Y9 v5 B3 S% | y
(setq p2 (getpoint "center of gear:"))
" B% D% j; M& k* p% S* S (setq y2 (cadr p2))5 u, E5 h: b" k, O$ D
(setq x2 (car p2))
) I' W8 J2 K& J( |: f (setq r0 (/ (/ (- numt 2.5) diap) 2))/ W% P9 J m. l/ O& f
(setq r1 (/ 0.2 diap))
3 q4 Q. r& Y) I (setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1))))" |! R, l: |. g: ?6 Z
(setq ang0 (/ (* pi 2) numt))4 E. z* U$ |1 M/ k; q/ t1 h( `
2 M: C. e. C# {$ A3 y
(setq y5 (+ y2 basr))
0 @$ ]3 u8 T7 ]: L" K- \# L' e Y (setq p5 (list x2 y5))
; }. b+ m3 v y, H% L g, I4 O( V (setq y55 (+ y2 r0))
; A- ?) ^6 q" ?0 s% s) i (setq p55 (list x2 y55)); M& N, t) S7 J% A7 `
(setq p88 (list (+ x2 2) (+ y5 2)))+ B9 `5 J# q$ c9 o( y! `
(setq a3 (/ (* pi 5) 4))
G! T" O% n' K( r3 n5 y (setq a4 (/ pi 4)); X/ P6 B: u1 i0 S
(setq pz3 (polar p2 a3 (* orad 1.5))), i( E- F' h/ E
(setq pz4 (polar p2 a4 (* orad 1.5)))
% [( D& [, d# b9 i, M (command "zoom" "w" pz3 pz4)
9 T2 Z0 G9 n# }0 v1 E( c$ i% y;! T2 y# K) L0 Z, @" s
(setq clay (getvar "CLAYER"))) U' h, }3 Y# |* e/ Z
(setq sblip (getvar "BLIPMODE"))3 Z) a8 }' l$ p( E! \9 N" o8 U/ s
(setq ts (tblsearch "LAYER" "CEN"))* f( V8 n" R. s1 v
(if (null ts)
3 U1 z& a' z. `) V0 {( u, ~ (progn, v" L" Z( H7 {2 n" x
(prompt "\nCreating new layer - CEN. ") 7 h4 |( t0 Q9 p8 f s
(setvar "BLIPMODE" 0)+ i8 K. D7 G8 Z8 e4 Q) o
(command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "")
$ X$ E4 A2 O" d/ Z) |, E t )) ?, b% ^& \# K7 W& Z
(progn
- z7 t# B0 I! _: s (if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" ""))
- i- c) w4 t/ @- D (command "LAYER" "S" "cen" "")
, `# {' L: H( c+ B9 ?) E7 Z3 q )
5 v7 p. p5 d6 V0 O7 t/ W/ Q )3 `: O$ s# Q" g/ e9 X* V9 L
(command "circle" p2 pitr)4 Z' H7 b* S4 v1 D) y
(setvar "BLIPMODE" sblip)
/ @6 x3 `2 x5 N+ S! j (command "LAYER" "S" clay "")
; z2 Q) W, r/ [$ M, J t8 ~9 c;# U* s6 S) S* W9 `) K b: N: s
(setq a1 (- (/ pi 2 ) 0.1))# f) m1 ~" |9 P7 L4 j: m5 c
(setq a2 (+ (/ pi 2) 0.1))% ?+ s$ l5 j; `5 Q6 z' A% r
(setq pz1 (polar p2 a1 basr))
" C( C" k2 D% Z( M" O (setq pz2 (polar p2 a2 orad)), ^# s. e0 m: J i: L- n2 [
(command "zoom" "w" pz1 pz2)& O v4 s8 s. ~, f' u' x7 d
(setq s (ssadd))- O- @: \3 W0 m$ ^
(setq le (entlast))
8 V1 o/ k' C! I5 J9 r0 V% x2 w" _$ R, q (setq test 0)
8 `" R0 {3 T' Q& s8 p; h8 p+ E# \! x+ h6 i( b* b7 [# C
(command "pline" p5)' ]( v+ f" V6 e! @
(setq p (+ incr p ))1 t5 p7 j! B( X5 i6 h) a
(while (> pnts 0)8 v d0 O1 l2 k K: J
(setq e1 (sin p))2 u3 x8 E" c; p8 a y
(setq e2 (cos p))1 Z' Z1 _7 C, D' `( b+ I7 R
(setq e (/ e1 e2))
9 T0 O9 n3 q4 j r( ]- b' E (setq j (- e p))+ ~4 W- Q1 E, A6 L% R
(setq x1 (* (/ (sin j) (cos p)) basr))
) [* G8 ]- p% Z$ u0 B (setq y1 (* (/ (cos j) (cos p)) basr))
* w- x9 O2 U& p! j1 R5 e7 c! j, @* _ (setq x3 (+ x2 x1))
" Y8 [" t: J$ D& _" o9 V6 z2 }' A (setq y3 (+ y2 y1))
% w# Y3 q" j9 q (setq p3 (list x3 y3))4 q( m% g5 [8 f% z( Z
(command p3); u! x3 T5 Y/ U! }6 W
(setq p (+ incr p))3 J4 ^0 ~& a0 R9 e, x6 m& l
(setq pnts (- pnts 1))% S5 }1 a3 r/ E' e. a+ D1 O" |
(if (/= test 1)7 _0 H1 e6 M: s
(progn
8 c# i6 c3 U4 v/ q! o9 }- f7 Z! p" A, x (setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))
- Q' t* _) Y3 i2 U# Y7 k (if (> hyp pitr)7 |1 k" G0 W7 e/ ^1 o! P9 u
(progn' _# ^( A1 d- L6 x9 P2 [
(setq pint p3)& }1 d0 L3 V3 @0 V8 w, d
(setq test 1)
3 H* L; o3 I/ D' A$ w )0 a5 f) h& f! n* k. R$ P# i
)$ d0 C5 t3 j3 e4 o( e4 O* J
);endif* \2 G; J7 X% R0 M, h8 v8 M
);endif; {$ Q( C# I$ H: V% ^
)
! h" i; o; k1 ~& b1 P. r (command "")
' w# d( y k. t; l9 \& y7 n6 b2 C (setq L2 (ssget "L"))2 V6 z5 h/ {/ g: {
(initget "Y y N n")
1 ?$ t3 t9 H: k% V) Y& ^ (setq ans (getkword "\n Finish the gear ?:<Y> "))
- x( u0 c" j# d, G& \( D9 b (if (/= ans "N")
# K; I4 D2 f6 h (progn$ ]) L/ V# |$ y
(command "zoom" "w" pz1 pz2), Z. {; t$ G7 u
(setq p11 (osnap pint "inter"))
$ c9 i6 N& h9 ^$ Q# u1 m (setq ang (angle p2 p11))
F" v5 ~/ b; d1 e) U% ` (setq angi (- ang pang))
, S' B; @* m2 |; j( P (setq p12 (polar p2 angi 1.0))9 P' ~3 W1 S2 G: N6 R
;
7 x8 ?( {* S/ u8 h+ _! E (if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))8 U5 f' o/ y( R( ~' E5 x
(progn
, P- J0 q% X8 X5 o# A7 p (if (< numt 42)
8 ~0 N. }* t0 C# M) r) @! I (progn
4 M; ~1 I- E- { (setq p56 (list x2 (+ y2 r0))), {8 c; k# m/ T. b& c
(command "line" p56 p5 "")
% ~5 V: k+ R7 J# S: @% c: z (setq L33 (entlast)): P4 F. b. L/ Q6 q! g
(command "zoom" "w" p77 p88)
9 v; \2 \ G5 {4 y (command "mirror" L2 L33 "" p2 p12 ""). L s- e0 ?( \) p" ?
(setq adj1 (- angi (/ pi 2)))
7 {( J. A% U, K5 Z8 Z: T% v (setq adj2 (- (/ pi 2)(* pang 4))): ^1 N. g4 M6 d8 Y; ]) S7 [
(setq p17 (polar p2 (+ angi adj1) r0))
. G8 b9 J& o- g# S! Y N3 [ (setq p16 (polar p2 adj2 r0))
4 T7 i1 H0 c) M8 e/ o7 D (command "arc" p16 "c" p2 p17): {" a( b6 v+ H( Y* W) ^/ a0 [$ p
) ;end progn$ R1 x9 ~) G9 A7 h: o: y |
(progn9 j+ f" Y5 m) v+ l6 {+ B/ u
(command "zoom" "w" p77 p88)
: c- D6 w" a1 K, H6 h (command "mirror" L2 "" p2 p12 "")2 |) B/ z3 S4 o) r5 l
(setq pL1 (entlast))
1 D+ G; ^& d. N% k; Q6 n0 `! Z (setq adj1 (- angi (/ pi 2)))
, d- O: d4 j/ b (setq adj2 (- (/ pi 2)(* pang 4)))
* x: W6 d+ n* r- K, w8 f (setq p17 (polar p2 (+ angi adj1) r0)): B0 i: m- q$ `( v1 i) ]. D( W
(setq p16 (polar p2 adj2 r0))6 t0 y( X9 s2 r$ z; x8 u
(if (> numt 101)
6 T4 `- N$ }0 w4 s/ Y# I7 { (command "arc" p17 "c" p2 p16)7 c5 ]! X' o+ x) K+ D0 [
(command "arc" p16 "c" p2 p17))) h3 P2 k$ q3 a* M. R4 k; T
(setq arc4 (entlast))1 B0 H1 d% n) }1 y
(setq p171 (polar p17 0.7854 (/ 0.4 diap)))- u/ G% r4 q" P6 P& I# [& N
(setq p172 (polar p17 3.9 (/ 0.4 diap)))# z. K! }% u$ u7 f1 ]4 h0 {( Z6 B
(if (> numt 101)
c0 h$ A$ d2 I: | (setq p18 (polar p2 (+ angi adj1 ang0) r0))( h$ w {6 y" A# a; t- A; j
(setq p18 (polar p2 (+ adj2 ang0) r0)))2 s% C5 X$ q; i/ j8 D
(setq p181 (polar p18 2.3 (/ 0.4 diap)))& @: M( Q2 o" N7 b6 o
(setq p182 (polar p18 5.5 (/ 0.4 diap))): L4 K5 _* C+ `1 R. \
(command "zoom" "w" p171 p172)& M: r( z. w4 L: O% M
(if (> numt 101)3 J5 M% B% X2 m) A2 p& x
(command "extend" pL1 "" p16 "") 6 U& B/ D* J1 B4 _' X/ x
(command "extend" pL1 "" p17 ""))
5 v" M* p. ? U (setq ang0 (/ (* ang0 180) pi))7 K, y4 y+ D% d
(command "rotate" arc4 "" p2 ang0)
0 Y Q& z; v! I) ?2 ^ (command "zoom" "w" p181 p182)
( @4 x, q w+ r1 l- z! ?: T+ o. { (command "extend" L2 "" p18 "")
6 I7 q" D9 C. j( m0 m& k$ G (command "zoom" "w" pz1 pz2)9 y; m. `4 E' W c3 ?2 z2 }6 A- ~4 b
(command "trim" arc4 "" p5 "")
/ d, G1 X# t: e& F z (command "erase" pl1 "")2 B/ x4 N' I! M2 \ m
(command "mirror" L2 "" p2 p12 "")
+ v$ q, h0 P/ |1 d! w/ a ) ;end progn4 K$ \( u& S+ W) j
) ;end if1 t# Q. T; c: K7 r' O9 {
) ;end progn0 w- x ~- K9 m$ q3 g# [ B0 l8 A
(progn
( {3 T6 Z. ?. m0 ?2 H (setq ang12 (- (/ pi 2) (angle p2 p12))) ' T- P Z' {3 I q2 k- y
(setq ang57 (atan (/ r1 h)))
5 J" K1 e1 E2 V3 V: u5 X (setq ang58 (- ang0 (* ang12 2) (* ang57 2)))
# ?0 W. L9 G5 z. e. Y$ {6 v (setq ang577 (+ (/ pi 2) ang57))4 ]: n* f A0 q$ {
(setq ang588 (+ ang577 ang58))
. A( w( D# l. p" ^4 ]" j (setq p57 (polar p2 ang577 (+ r1 r0)))$ u( M% m! t: z" d7 s& A
(setq p577 (polar p2 ang577 r0))5 @# r8 C% a- S$ ~- R% y, {
(setq p588 (polar p2 ang588 r0))
) X. O6 I4 c; I4 y2 ] (setq p56 (list x2 (+ y2 h)))
# p Y9 ?: z( W$ O! d$ Q (command "arc" p577 "c" p57 p56)& q5 W/ O$ k6 c1 e: V5 D6 n
(setq arc1 (entlast))4 A0 o+ J0 Z/ U" Y
(command "arc" p577 "c" p2 p588)- e- B* O x8 w
(setq arc2 (entlast))' {5 F& ~3 e6 o1 B+ t; L
(command "line" p56 p5 "")
( m; v/ m! p3 q; e7 F. y+ q (setq L33 (entlast)). q g: C9 k! I& y* B+ W' t0 r, }
(command "zoom" "w" p77 p88)
# `# V% \2 `- W* H+ O7 ] (command "mirror" arc1 arc2 L2 L33 "" p2 p12 "")
+ v, Y# Q) B P" S (command "erase" arc2 "")( I- X2 f1 X I$ K
) ;end progn 2 r) H) f9 ?5 \7 V8 @$ K9 r+ o4 C
) ;end if S& u0 W' V$ Y( M$ }( k5 v
; ! i- p# J2 B G
(setq beta (angle p2 p3))
4 U, W7 R; A0 V; F (setq ang2 (- (* angi 2) beta))
" l' v! c8 H: ^- a7 P5 t. Z; y (setq p15 (polar p2 ang2 orad))6 A# g+ t& k3 ]4 ]
(command "arc" p15 "c" p2 p3)2 X: a3 g0 Z) G1 Y7 D2 v
(while (setq le (entnext le))9 }; {6 \- @' ?* ` R* e
(ssadd le s)
& q- l) f2 R' p7 @ )
# T5 E( q# K% L) j! ~5 m% L8 E (command "array" s "" "p" p2 numt "" "")
; P [4 ]7 C# f- C8 U. N) f (setq q1 (nth 0 p2)): Z; D! G+ x5 G. I7 a9 l
(setq q2 (nth 1 p2)), y& A! I1 ?& S, {# C4 j
(setq q5 (+ q1 pitr 2))/ M) w, F8 S" T5 |( R, Q
(setq q6 (- q2 pitr 2))
3 N* H" I; ?) Z8 n0 w7 ] (setq q3 (- q1 pitr 2))' O. I. i3 j* W* ?3 t H
(setq q4 (+ q2 pitr 2))
' R" w1 [& D, |$ H! I- H- E* E (setq q1 (list q5 q6)); |8 v' p, y5 }9 U
(setq q2 (list q3 q4))" K$ f: C, W, Y% y; Z9 U
(command "zoom" "w" q1 q2)
; d& X; }4 L% \) p5 v" {, k )- e# G2 B" e/ r6 I0 |7 b
)
' d! t; E& h7 u' e6 ~7 } (setvar "pickbox" 5): j6 n, g5 Z+ O& h; G& _1 P
(setvar "aperture" 5)1 C4 Q5 N( F0 \9 n
(setvar "osmode" 37) g. {* T4 Y# J0 U5 u0 m
$ K% d% {3 |# ~; l% x
(princ "Finish gear ")
3 e7 n+ p, B) ?+ a3 { (princ numt), Z i0 o/ W6 q! k8 v- G: ]
(princ "T")0 W* Z% [3 `$ _
(princ), A% ^ ]; f( u( X
)+ }/ }" H% l5 M( U
2 o2 J4 i% m6 m* r
|