(defun C:gear ()) l7 C+ l8 J- F7 D( M4 V
(setq numt nil+ ^* z2 p/ i9 j% P$ a- t
diap nil
% S' ~8 H/ e; U: v1 L* R# y prsa nil v1 F4 V' Z" Q/ y: n$ C1 g+ z
pnts nil
p& }/ T" H1 R" ?4 w test nil0 q. O% J- L& B! N9 f
pwd nil1 Q. Z( d9 \1 _% f
)
+ ?" G' z% j. Z# Y* f; _ f0 E% e% ^ Y n5 w, e
(setq numt (getint "Number of teeth:<24>"))
( s+ ]- _! B c* f2 o! n (if (= numt nil)
) j) d, F! \* ^ (setq numt 24)$ q k, W5 L' R+ H6 k4 Z
)
, T) t5 G8 k7 x; f. r (setq diap (getreal "Modulus of gear:<0.5> "))
% K# z' g/ S( a; K0 W4 e* @4 B (if (= diap nil)9 ?% Z- }+ l) M( E% A$ u0 X: t- k
(setq diap (/ 1 0.5))" l0 K$ r- \2 d
(setq diap (/ 1 diap))0 R0 v y' {6 B+ g" T; g
)
( q: J; {8 h" b7 ?* v* @# l" N (setq prsa (getreal "Pressure angle:<20.0> "))
1 I+ \. m3 C6 H% R- ?$ ? (if (= prsa nil)& z" [6 `7 O! ^4 d$ |2 F4 W" s7 P8 c
(setq prsa 20.0)" V( _: a3 |( G% D, s
)
! W$ V$ f6 X# t7 {$ e (setq pnts (getint "number of points on curve:<40> "))
: Q. ?- o9 G: R0 n2 O5 J (if (= pnts nil)+ ]9 E+ I* \. Z& \
(setq pnts 40)
6 v: }7 i. O$ J2 X. s* { )
5 }/ V4 X# d' I+ @/ {( ?. X. d2 ?% n' v8 l
; (setq pwd (getreal "Please input password:"))# Z) @/ R: G+ p+ ~7 e2 h
; (if (/= pwd 8833)
" X/ G G( ?! D! n k7 z; (setq numt 0)
+ L. h/ h/ N, U1 e$ U( _* @; )
" w% t% e& x+ ^ C3 ?; (if (= pwd nil)5 T: a' `' n/ D8 B- l! Q Q
; (setq numt 0)
~" n( n z+ Q: P9 J; t: n8 `; )
; W! ~8 o3 y' R. E; y0 v1 v- T1 s4 a$ G, [2 R
(command "osnap" "non"); m, A0 I& q; ~- w7 Y1 x6 |
(setvar "cmdecho" 0)
1 m0 R0 g' h3 ~" _ (setq oldvar (getvar "pickbox"))$ h5 |5 \% k% w I+ e- c; @2 w6 u+ R
(setvar "pickbox" 0)* g+ t- f% H: w' X: {
(setvar "aperture" 1)
! _0 \: y5 G9 T. g; K (command "osmode" "0" )5 B ^) K( Q; v. ]; _9 o ?- o4 r
;& p* u- T$ U1 V& [8 \! F0 X
(setq prsa (/ (* prsa pi) 180.0))
- L- H! D2 W# { (setq pitd (/ numt diap))
) x/ {' e- W; i+ B, Z (setq outd (/ (+ numt 2) diap))( J7 @- p# h8 w$ R$ \" C
(setq basr (/ (* pitd (cos prsa)) 2)), z8 v; s! J0 n5 U0 Q
(setq orad (/ outd 2.0)), w, `, ~3 g: {6 l
(setq z (- (expt orad 2.0) (expt basr 2.0)))% E* y G5 c& z2 M6 F X8 `; p
(setq x (sqrt z))
V. s7 x; @+ p# F! o+ _# x (setq paodd (atan (/ x basr)))2 b. T5 e8 q6 ^8 B$ P! n7 @
(setq incr (/ paodd pnts))
. ^/ I9 N6 N% m* o6 T* R; X (setq p 0.0)* s4 p. Z( |+ H& F% ~9 {: }" X
(setq pitr (/ pitd 2.0))
0 c; y7 J2 M1 b5 Z' _0 T. _ (setq pang (/ 360. (* numt 4.0)))
5 X/ ~, B/ u5 ^9 i B, q% s (setq pang (/ (* pang pi) 180.0))
6 T0 \& d- `' v7 M @. a (graphscr)
0 S) H! L2 R2 o4 ^2 J5 R+ H& | (setq p2 (getpoint "center of gear:"))
- {- M0 B8 Q2 V0 R0 u* ~3 ~ (setq y2 (cadr p2))
7 D" R/ h7 H! p/ C' p (setq x2 (car p2)) R6 H7 J; ^. w* R# A7 h
(setq r0 (/ (/ (- numt 2.5) diap) 2))
* B# U! K; _5 s+ r7 i6 B (setq r1 (/ 0.2 diap))3 n& ^1 k3 a1 ~( B$ z+ m6 y
(setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1))))
1 F- ~# V0 D* R9 q( Z! ` (setq ang0 (/ (* pi 2) numt))
+ M# W/ b+ H! C+ d$ s) g# ^4 \& F! b+ k, B/ \/ y8 X' j# ]" k9 {
(setq y5 (+ y2 basr))) g+ W1 S) H! W1 {
(setq p5 (list x2 y5))
2 R5 S" A9 b3 ]. D* y2 Q (setq y55 (+ y2 r0))# Z# \+ _' U% r, I( u2 k+ _
(setq p55 (list x2 y55))9 k" y J& {8 d
(setq p88 (list (+ x2 2) (+ y5 2)))
2 o9 w, E1 S, o (setq a3 (/ (* pi 5) 4))( }0 D) M& X+ t. s
(setq a4 (/ pi 4))
8 G2 ^6 ]( V% h9 {& [- H% R" M (setq pz3 (polar p2 a3 (* orad 1.5)))
4 f+ R6 Z0 i# ^& { (setq pz4 (polar p2 a4 (* orad 1.5)))! W0 h- W& w [/ i6 @2 g
(command "zoom" "w" pz3 pz4)
9 J( d; D+ i7 T$ U( t- S;
, c" d- f, n5 E( f6 l' A; P (setq clay (getvar "CLAYER"))
7 I2 J% `( G0 k+ n' C (setq sblip (getvar "BLIPMODE"))# ^7 X' i# E6 U( V3 h
(setq ts (tblsearch "LAYER" "CEN"))' F# F% S5 [1 U# }6 s* D
(if (null ts)
3 C! o. c, K4 f# z (progn
) }2 J* d: }) G' X (prompt "\nCreating new layer - CEN. ") ; x3 B) T3 G- C1 q/ T
(setvar "BLIPMODE" 0)( x" J5 I$ I' K, Z7 g& t6 u7 D
(command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "")
* T% B! z+ X& I& b )' f" W" [3 w& ?- S& Y G/ E# H) [
(progn
4 z9 U0 g4 ^$ x( q! [( s2 Y7 J (if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" ""))8 h, u. v$ Y6 v
(command "LAYER" "S" "cen" ""); Z4 X! @ w+ ]: u, G
)- r, N8 ]2 K) |) K
)
9 M. a7 P9 g8 O& A (command "circle" p2 pitr)0 q- W; [& S0 t
(setvar "BLIPMODE" sblip)9 m/ \. O: N8 \% d( n
(command "LAYER" "S" clay "")
. p6 N- X2 o. ?/ ~. k3 Y5 ~;% P3 [7 n* r( n r4 B: h& w
(setq a1 (- (/ pi 2 ) 0.1))$ i' N- @4 E6 w3 }0 I
(setq a2 (+ (/ pi 2) 0.1))$ [, v2 V6 I+ T) O! W+ a( u9 g. F& M
(setq pz1 (polar p2 a1 basr))
7 y: z& `* z" ~) M (setq pz2 (polar p2 a2 orad))
* v6 b3 h" A" n3 E2 V5 c (command "zoom" "w" pz1 pz2)
( P0 V7 H% O5 j (setq s (ssadd))/ f( O% `' x% R* O9 {
(setq le (entlast))
( X9 w: S9 T% A& w (setq test 0)/ C5 k" T2 k# i# T8 s# e
# }9 r3 D: T$ N) s& W
(command "pline" p5)* F9 x' V6 ?# h4 ~# d
(setq p (+ incr p ))( f3 ]" S% R" g/ D* B, h
(while (> pnts 0)' |6 q3 C+ ?" K6 M9 z N
(setq e1 (sin p))
* U4 M+ l: h! K0 s: E (setq e2 (cos p)): U* ]) N. Z: r( k
(setq e (/ e1 e2))
$ \, _$ l- O& u1 z9 J( i2 k0 R (setq j (- e p))) w. t8 r! X! K5 b4 h* ?- [
(setq x1 (* (/ (sin j) (cos p)) basr))% H$ ]) E4 _5 x* r" e' ~
(setq y1 (* (/ (cos j) (cos p)) basr))
% N% B6 |" X8 a7 R! t/ [( M" { (setq x3 (+ x2 x1))
% u6 x6 B: I# Y' E2 q, Y% | (setq y3 (+ y2 y1))* U, ~; E+ \' `; H
(setq p3 (list x3 y3)); J$ p2 [& @) p
(command p3); \# s' o' n' l2 {* b7 N
(setq p (+ incr p))) B @8 a" E) d9 Q" K! x
(setq pnts (- pnts 1))
5 d7 w( b" m4 r' g& i (if (/= test 1)( C- q: y: G# |3 R4 o3 K
(progn) U6 @; Q/ O6 R+ ?% ~( D% L" f; J
(setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))5 s2 h4 w, H' g, O
(if (> hyp pitr). B* \) i/ l3 L+ t) r* R
(progn/ D. e$ G; O6 j% h" g5 V
(setq pint p3)+ s y6 a$ Z* _
(setq test 1)* b8 K( B9 ]. n; d" I
)
8 e, ~+ P9 N( m# f- P ); ]5 w5 e# U( I7 i
);endif
, M6 G5 s+ E. Q' Z/ N7 Q, s4 H );endif
& e- _: M- S6 F/ j! ~& z; _0 e3 N9 Y )% l2 i( E. E! O
(command "")' a- \' L2 a* [( w3 d* u
(setq L2 (ssget "L"))
- J0 R+ q( O" H- `2 _: n" i. E: p (initget "Y y N n")
) }4 e, r% c3 C$ k# \ (setq ans (getkword "\n Finish the gear ?:<Y> "))
: z7 n, j8 _" o) t (if (/= ans "N")# F$ _+ ~' Y9 G# y6 E
(progn- {1 c3 P& ] O0 Y
(command "zoom" "w" pz1 pz2)
7 q) I' t% t T7 h q$ { (setq p11 (osnap pint "inter")). G, A! U& C$ z* v j _+ K8 w( ?8 K
(setq ang (angle p2 p11))
3 }; x9 C( b5 @* N: {/ ]! c4 _6 | (setq angi (- ang pang))
& g" X( R t* n, |8 d3 p (setq p12 (polar p2 angi 1.0))
/ |' N* r0 E: y9 l2 M$ C: @( Q+ e4 x;% f6 a5 L8 T$ h
(if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))* i* ^( U4 u1 `2 c, J
(progn
3 \+ X% y9 p) g: |1 U (if (< numt 42)1 u" M# @; e, t6 N# s* U# }
(progn
/ ?' B+ g" u7 G (setq p56 (list x2 (+ y2 r0)))
3 \, e& x) P: s1 `: M+ s. q$ \ (command "line" p56 p5 "")
& F3 B4 ~- Y; P; { (setq L33 (entlast))
: w- F- X9 f* O h (command "zoom" "w" p77 p88)/ T0 ]0 Z$ K5 J. h- {* J
(command "mirror" L2 L33 "" p2 p12 "")
' V/ j7 C( h/ M& U# v (setq adj1 (- angi (/ pi 2)))
1 k+ o2 d' C- j; R (setq adj2 (- (/ pi 2)(* pang 4)))* | M3 Q2 V9 N) w+ |4 P* {
(setq p17 (polar p2 (+ angi adj1) r0))
( U/ C. t9 i+ ~8 x (setq p16 (polar p2 adj2 r0))1 Z' t6 c( z" u) }, J* O* F b
(command "arc" p16 "c" p2 p17)
, y% g( E7 q$ ~6 V; @6 \ ) ;end progn0 }3 N5 o. I; A" }
(progn0 P+ A! X3 x3 \- x0 n
(command "zoom" "w" p77 p88); g+ q% r0 H9 `
(command "mirror" L2 "" p2 p12 "")
2 n: h( a n0 J) ~; L' O+ E. W (setq pL1 (entlast))
5 W- v/ {% i# J4 U! [& Q# Q* f5 D! U (setq adj1 (- angi (/ pi 2)))2 p) H1 d. ~) N3 k8 F4 s4 H
(setq adj2 (- (/ pi 2)(* pang 4)))$ E8 u g* F% h6 l! v
(setq p17 (polar p2 (+ angi adj1) r0))
( k0 Y% s c4 E (setq p16 (polar p2 adj2 r0))" L) L8 {" }1 ~& e; [, M
(if (> numt 101)
+ q! T6 Z9 R/ R4 q$ O1 m! B) _ h (command "arc" p17 "c" p2 p16)
5 |! N" F7 f T (command "arc" p16 "c" p2 p17))5 u" q" D$ q+ j& ~# f& N
(setq arc4 (entlast))4 m2 X" e0 y! J& \4 B2 V2 b2 a. ]
(setq p171 (polar p17 0.7854 (/ 0.4 diap)))6 d; ~6 z7 t" s4 x P
(setq p172 (polar p17 3.9 (/ 0.4 diap)))
) K" L8 E" s' A; y& F (if (> numt 101)
8 X0 G1 Q/ p+ i5 y. _- F5 i+ S (setq p18 (polar p2 (+ angi adj1 ang0) r0))7 o% |! x) e/ K9 A9 ^
(setq p18 (polar p2 (+ adj2 ang0) r0)))
9 G/ T7 n, r; u (setq p181 (polar p18 2.3 (/ 0.4 diap)))% d3 o1 u0 N7 y( P
(setq p182 (polar p18 5.5 (/ 0.4 diap)))1 _9 E. ~/ W7 u: x- e: H, n: z: H$ ^8 c
(command "zoom" "w" p171 p172)
! W) F/ @/ W' ? (if (> numt 101)
& f5 {8 w) R: ~; n- B! | (command "extend" pL1 "" p16 "")
+ c$ I, g- {" u (command "extend" pL1 "" p17 ""))
1 ?6 \- _4 a2 ]; ^) a' g( k3 T$ z (setq ang0 (/ (* ang0 180) pi))
2 J1 h7 I: k4 \, b (command "rotate" arc4 "" p2 ang0)7 h. m) s" M9 U4 _: q9 z$ R5 F
(command "zoom" "w" p181 p182): I5 S7 w& @% H1 A4 }
(command "extend" L2 "" p18 "")
# G7 R( _7 V) y( ]! H x/ k/ }) Q (command "zoom" "w" pz1 pz2)/ M; S6 p6 u& D; R4 o- q. W* s
(command "trim" arc4 "" p5 "")* k) \3 d( j# n. @) }
(command "erase" pl1 "")9 m& T6 f! @) D# w0 x8 o
(command "mirror" L2 "" p2 p12 "")
$ a7 A% w/ [* g9 V ) ;end progn
1 `% [# N' l |! s ) ;end if! m* i+ W; T0 U |
) ;end progn" S0 g, @! a8 ]$ I% }4 _
(progn / r" a) |6 q% A$ f7 n
(setq ang12 (- (/ pi 2) (angle p2 p12)))
- ]6 E4 V s, B (setq ang57 (atan (/ r1 h)))/ ^2 D8 R1 {$ x+ N9 C
(setq ang58 (- ang0 (* ang12 2) (* ang57 2)))& ] j/ I- u9 r/ h1 x" G
(setq ang577 (+ (/ pi 2) ang57))+ s1 k; h& Y- W* _
(setq ang588 (+ ang577 ang58))7 Q; ^* A1 T: Z$ |
(setq p57 (polar p2 ang577 (+ r1 r0)))
3 Z5 J2 d: Y8 @/ q7 x5 q( | (setq p577 (polar p2 ang577 r0))" f& q, R' N) ~2 D* m
(setq p588 (polar p2 ang588 r0))
1 W5 @5 t" {3 r6 T* }6 `; W (setq p56 (list x2 (+ y2 h)))
8 ~0 g7 p' n0 D g (command "arc" p577 "c" p57 p56)1 \7 k7 S5 l& n. v) O
(setq arc1 (entlast))! z% ~! |3 @: } l
(command "arc" p577 "c" p2 p588)+ e2 b' X8 l' N7 C( l$ b! y2 i
(setq arc2 (entlast)), j3 _% p/ }2 o% V5 J; r$ o9 Q9 y
(command "line" p56 p5 "")
/ A# D) P4 v7 u3 B (setq L33 (entlast))
* l |% E k5 z. m (command "zoom" "w" p77 p88)# b- n' W, k5 I" G& Z* u* L2 S
(command "mirror" arc1 arc2 L2 L33 "" p2 p12 ""). o+ q( u1 d- A% k$ N' B# f# Z* A: t
(command "erase" arc2 "")2 l5 ?3 G' B6 N/ L/ \
) ;end progn - K5 T# V7 _ ~6 e& a+ A" Q
) ;end if! ~$ P+ t5 C5 ]2 j: P/ o; e
;
( p6 \$ n# \- s (setq beta (angle p2 p3))
8 [) w( U7 `( k (setq ang2 (- (* angi 2) beta))) v* _# v/ P& ?. z5 H' Z* Y
(setq p15 (polar p2 ang2 orad)) y; J* J, a3 N8 x
(command "arc" p15 "c" p2 p3)1 X) x2 r6 e# A; a+ H
(while (setq le (entnext le))
8 F9 r& ^* G1 G/ Z- a4 x, D (ssadd le s)* F( Q! c0 K l6 H- ~' r7 j
)
, a; f( d6 D2 J- P) y (command "array" s "" "p" p2 numt "" "")
) L* b- a! Z, X( A) K (setq q1 (nth 0 p2)): c: _( m5 W$ _2 d1 [1 E
(setq q2 (nth 1 p2))
8 @. P. N. j& h% i (setq q5 (+ q1 pitr 2))5 I0 A2 |! w q: w4 a! [6 _ k
(setq q6 (- q2 pitr 2))
! [2 A9 ]* o' E2 D. ` T (setq q3 (- q1 pitr 2))) ]+ D8 c' ]6 ?2 j
(setq q4 (+ q2 pitr 2))& D0 b$ |$ a. J$ w! k& O
(setq q1 (list q5 q6))
5 R( _! V' G; R8 t (setq q2 (list q3 q4))
1 i5 Y. N. x5 C, b: U6 u (command "zoom" "w" q1 q2)# m7 r q0 c% x! N/ P5 ]) Z7 q
)
3 q, ~* R9 ~! X )
$ B0 r2 @8 e1 ~4 | (setvar "pickbox" 5)
2 Q7 o4 f0 I2 u+ s, {* ]8 @! z (setvar "aperture" 5)
/ R Z: p! A) g (setvar "osmode" 37)
: U) m y' h1 N5 R5 }1 y $ c6 C/ m) j! K: L3 L+ d% Y& |% z6 q
(princ "Finish gear ")6 N; ]& K. K. ?& c2 m. r/ C; a
(princ numt)' U3 W% R" j2 Q4 v# |, X
(princ "T")
0 o2 T+ R0 t }! z (princ)
8 X* _- J& |% a5 b )
9 ]$ g; [( s Y# U7 a5 A! ~& J% l
6 M: k, { J0 p5 v, `$ u |