(defun C:gear ()2 E$ E* j6 [0 E
(setq numt nil+ Q4 A( ]8 g* V& f2 a0 v
diap nil
4 ]! \, F+ D7 d0 x$ @ prsa nil0 S# X$ q7 ~4 }, n
pnts nil! k8 o3 R. ]* a+ `/ w- \
test nil
! w! A3 c! A/ h, } w, C0 T5 p pwd nil1 U, K1 V( U) E$ ]
)! V; h* [+ C0 ?% I0 K/ p, m& P9 J
; v1 Z) M: U+ i( ? (setq numt (getint "Number of teeth:<24>"))- V& V3 V5 C/ V& p* }1 k! B9 p
(if (= numt nil)# A; P. M+ X; I1 j5 Z; l# b9 T
(setq numt 24)
& h# x' |. b; |- I' H- L1 G1 d )
; K9 D; f7 |4 K (setq diap (getreal "Modulus of gear:<0.5> "))
# e' s5 s( a: ~/ S! V! J, T (if (= diap nil) C5 M' @( T4 H2 s
(setq diap (/ 1 0.5))8 F$ S O1 B: s: K
(setq diap (/ 1 diap))
1 `* G/ j4 _) E2 b: l) W3 B2 k )/ K3 K. s& Z5 N
(setq prsa (getreal "Pressure angle:<20.0> ")); I& g- e \& N( y+ O" ]
(if (= prsa nil)% f7 I& X& G, K& ?: u
(setq prsa 20.0)/ ?7 D1 p- x1 ?/ C n% B8 e
)! [* ]! A- i# T, m, p1 v
(setq pnts (getint "number of points on curve:<40> "))
; M( K& U9 G0 t8 x9 ~" ? (if (= pnts nil)4 q8 _, `$ u @ H% W, l
(setq pnts 40)
: I5 _% Z. x2 j )$ }2 K) g/ s$ T* [4 F
2 ]% \4 Q1 ^* Y u; (setq pwd (getreal "Please input password:"))& p6 j. o5 T3 J% }2 T9 U8 i
; (if (/= pwd 8833)
* @$ b, |: d: X) M% Z' x! C; (setq numt 0)
- ]8 K( D& p/ ]: {8 D. m3 @3 C; ), ~6 f. t; O( K) q1 ? Q `7 B: Q# D
; (if (= pwd nil)4 U9 C1 l8 J! R9 Y D7 A' V1 ^6 g1 r* [, h
; (setq numt 0)( q3 i4 Q( Q5 n
; )& \8 S$ I" C. x0 g; ~) T5 t
;: B3 B( b3 |) ?0 h# [% U3 y! G
(command "osnap" "non")
* }' @3 ~ n1 ]" k, F" L& u (setvar "cmdecho" 0), ?8 |* b8 W) q5 F, o' p: N
(setq oldvar (getvar "pickbox"))
) I$ o! v& G, A! ]0 l j (setvar "pickbox" 0)
6 N4 h8 E) {* d2 E (setvar "aperture" 1)
8 |3 w8 U9 R* E" M7 v* @2 c (command "osmode" "0" )/ z) O; V6 p# o1 p5 F0 ~" w# z
;! J+ l. s6 h( C2 o/ n! [
(setq prsa (/ (* prsa pi) 180.0))( `4 h* R: g- @" y# ^6 s( Z
(setq pitd (/ numt diap))
+ \6 r- z' I6 A- l (setq outd (/ (+ numt 2) diap))
- o' \2 \: }) p4 ^ (setq basr (/ (* pitd (cos prsa)) 2))( @ D2 l, V7 r
(setq orad (/ outd 2.0))* G! G* `2 h" P% g( a3 U/ S$ ]
(setq z (- (expt orad 2.0) (expt basr 2.0)))
6 m6 M4 y5 I% r) }1 k9 h" [ (setq x (sqrt z))
5 {+ h0 ~, |) A7 n$ m. G7 _6 n1 R (setq paodd (atan (/ x basr)))
# E1 w- u6 N' r# ~% c" m# w/ S1 y+ h9 P (setq incr (/ paodd pnts))1 K- M$ e' T+ p0 N9 m7 {2 g
(setq p 0.0): G2 d6 w( u o# b
(setq pitr (/ pitd 2.0))2 K+ z- I n: x9 l3 T
(setq pang (/ 360. (* numt 4.0)))0 a5 ^8 \' X( g- i. }3 v" ^
(setq pang (/ (* pang pi) 180.0))
0 K$ L X0 l0 H7 q (graphscr)
! t z" z" O' J& S% h! y" ?& Z8 L (setq p2 (getpoint "center of gear:"))* t* s- k: O0 v7 ~' O8 L* U
(setq y2 (cadr p2))
N5 |6 ^. I3 I9 f (setq x2 (car p2)). f& d5 N/ R$ h" z4 X5 V. B
(setq r0 (/ (/ (- numt 2.5) diap) 2))" c% u( y! u& O1 b3 }1 l- x. D
(setq r1 (/ 0.2 diap))
! N4 i6 W2 n0 S (setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1)))), C. r" G. J% k& c; B: g; j2 a4 M
(setq ang0 (/ (* pi 2) numt)). p& V0 q( P+ s O. x
\/ ]0 h& c& X1 e; `- p |
(setq y5 (+ y2 basr))
( {1 h) a0 J6 t" p) {* W6 P& o (setq p5 (list x2 y5))
; ]0 J$ [8 X) {# L8 R8 [ (setq y55 (+ y2 r0))# c! m0 F2 L: Z5 ?! e" \ a
(setq p55 (list x2 y55))+ J% o0 I0 Q, Q
(setq p88 (list (+ x2 2) (+ y5 2)))* q' I, K& v3 E& ~; H1 g0 |3 k
(setq a3 (/ (* pi 5) 4))4 e& ]+ B3 G$ S
(setq a4 (/ pi 4))7 r* N+ `6 k0 O9 C; o; g$ S8 \
(setq pz3 (polar p2 a3 (* orad 1.5)))
( j+ V6 P9 M+ C3 G) P8 ~ (setq pz4 (polar p2 a4 (* orad 1.5))) B- ~& T2 J5 E+ Q$ L
(command "zoom" "w" pz3 pz4)' [0 f4 C+ U, S& A: a6 F: Q
;
5 B; r; A- K% `% P2 ?% ^& E0 E (setq clay (getvar "CLAYER"))- h+ A+ y' w0 o6 w4 s% V5 I
(setq sblip (getvar "BLIPMODE"))# T4 c: g& k5 O- ^! ?' |5 G2 f& ~
(setq ts (tblsearch "LAYER" "CEN"))5 R% G/ V& ]+ Z5 C4 N
(if (null ts)" U$ A- d* R+ Z2 B. v) A
(progn9 L5 }5 i, O& [9 t) K
(prompt "\nCreating new layer - CEN. ")
1 B6 I2 \0 X5 `. B4 P N4 s' F" D; z9 y3 ? (setvar "BLIPMODE" 0)
1 a- ?3 j. V- i (command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "") & J6 ~. p3 R$ M q8 O
)
2 i6 o, G1 \& O, f) T (progn% @ V9 _3 X% i+ r2 s
(if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" ""))
6 n* L! x1 Q' W5 S) I9 M (command "LAYER" "S" "cen" "")
% h; ^8 U, N( h/ @+ I )
! F0 `7 l O$ `, W9 A9 {5 [ )
: ^* E3 i K5 J' Z, W/ l& I (command "circle" p2 pitr)$ o: w! Y. E; ], p5 p9 e% \) Z, D
(setvar "BLIPMODE" sblip)
* ~: V; w2 } s4 O- V! w9 @ (command "LAYER" "S" clay "")
: i' @ E" t/ [;; a( R% G" j8 d3 A2 @
(setq a1 (- (/ pi 2 ) 0.1))
! L$ ?7 X7 Y } (setq a2 (+ (/ pi 2) 0.1))
- m6 W: D7 v, k6 Y: b- C( ` (setq pz1 (polar p2 a1 basr))6 Z! k$ |- Z, n4 x0 R
(setq pz2 (polar p2 a2 orad))
" A$ t0 W. T, J6 n) ?, A (command "zoom" "w" pz1 pz2)% {; u) S* O" V8 G' w. j% v
(setq s (ssadd))- `8 Z$ g, h& |6 ?# f+ I
(setq le (entlast))
( ^- k; |4 `+ q" S (setq test 0). K$ Y: A, ]+ ? {/ B6 w
/ n) N: u* a: e# }6 C. h (command "pline" p5)
@, X& T/ D. i9 Y9 f" x9 p; Z+ L( N (setq p (+ incr p ))4 g/ e% K, e+ ^7 |4 P8 u
(while (> pnts 0)
4 i( ^5 m: a4 B4 `! a% c6 c (setq e1 (sin p)). C0 |( e" o7 P8 t" N# C2 e
(setq e2 (cos p))
1 Z b/ B! S& m (setq e (/ e1 e2))
- ~; M+ ^/ o6 {1 M: h' y2 \- k" @ (setq j (- e p))- B) K" D9 R; u0 P1 R7 U
(setq x1 (* (/ (sin j) (cos p)) basr))
0 V2 q1 K7 q/ J8 V, b (setq y1 (* (/ (cos j) (cos p)) basr))
, m" w4 V3 J+ V (setq x3 (+ x2 x1))( H A& I& ^5 r* j# Y. o0 F
(setq y3 (+ y2 y1))
7 S) f3 y6 W4 ^" Y) ?! X (setq p3 (list x3 y3))& D9 ?) K' w8 t
(command p3)
: V+ g- z1 Y1 Y( |+ x- L2 S (setq p (+ incr p))
/ b' T9 [+ x' o, @( Z (setq pnts (- pnts 1))/ S% M7 ]: j# k4 i7 c
(if (/= test 1)7 W; t+ x+ A- k
(progn- |/ g+ E6 m' R1 d
(setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))% N+ `/ M+ E6 g/ W% c
(if (> hyp pitr)
* |* T. T. x+ T) y (progn
! _2 N6 G& |, k! N; p! d0 P (setq pint p3)+ v5 a/ N; l0 u- x
(setq test 1)
& W: ^- r3 u. W3 \* {. v ), |& J. Z" m7 A7 _# K+ R8 Y
)
2 p4 w% B8 }8 ?; r/ M );endif e2 A, P2 o' j1 Z3 d
);endif
& g; s' o- X8 C) E! @0 D! d+ v C4 o )
/ |/ r2 ^9 j) e6 N' f8 p* f9 g5 @5 R (command "")& z: o/ U1 M; i' B y
(setq L2 (ssget "L"))% a/ J% t$ I+ t% A+ d/ v+ P
(initget "Y y N n")+ O8 B2 ]8 L# ~
(setq ans (getkword "\n Finish the gear ?:<Y> "))
& M( A3 ^6 C [6 O& f (if (/= ans "N")
1 V0 k9 { X7 K7 s+ b3 z/ B$ Y (progn! ^& Z- A. D x0 M
(command "zoom" "w" pz1 pz2)
# I9 E. x. ^, e! k6 @* h9 r% K+ c (setq p11 (osnap pint "inter"))6 y7 a* P& O1 s. ~5 Z9 l
(setq ang (angle p2 p11))
/ P! G( X2 Q) X( ]) |$ Q (setq angi (- ang pang))& M7 N# j, i# [8 f# _
(setq p12 (polar p2 angi 1.0))$ x, g% X: ^. ]" b; K: Z3 ~5 G
;3 c" M! y& _0 t6 z. D
(if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))
8 g1 c8 }3 F! a* B; @( I (progn, A! K7 W; Q* l
(if (< numt 42)% P4 W$ n0 }+ p& |" _' _4 R9 X8 ~3 y
(progn
7 H! f+ c# D2 n; a% N: N% F! F. M (setq p56 (list x2 (+ y2 r0)))
, N( h) g4 s' C& k8 L7 J8 O (command "line" p56 p5 "")
% V S! L* x6 n+ A) a (setq L33 (entlast))* F2 P: s, F2 n+ ]. U
(command "zoom" "w" p77 p88)
0 ]; b9 u8 T, F7 p# R0 c3 h (command "mirror" L2 L33 "" p2 p12 "")
0 K1 ? N( e6 w: E (setq adj1 (- angi (/ pi 2)))3 |1 S9 C* O. f2 o8 q
(setq adj2 (- (/ pi 2)(* pang 4)))
: e7 o: m! a/ _ ? J9 n5 e, q6 T( d (setq p17 (polar p2 (+ angi adj1) r0))
) @) U: x4 G- b8 G7 \( v$ ?) |6 {0 ?' l (setq p16 (polar p2 adj2 r0))
1 z. V) N6 X+ S/ v: K( Y (command "arc" p16 "c" p2 p17)$ W- R# u7 O$ E3 A
) ;end progn
$ q {6 R" G. T3 O (progn2 @, n1 n. u6 X1 \0 ~( G/ ~) }
(command "zoom" "w" p77 p88)
; R6 |: E5 i, C G% G) M0 _# ]% F5 f (command "mirror" L2 "" p2 p12 "") e% l: {' r4 Q4 r; U
(setq pL1 (entlast)) 4 U) M3 ` L# {: S8 P9 Q6 Z
(setq adj1 (- angi (/ pi 2)))
+ C |( y' q7 P4 F; @4 W5 Q (setq adj2 (- (/ pi 2)(* pang 4)))( X3 R% s _+ a* Y0 m
(setq p17 (polar p2 (+ angi adj1) r0))# v. u/ s6 H4 M: {* U& \
(setq p16 (polar p2 adj2 r0))5 p2 k V Q8 \! {8 ~+ Q3 E# a* T
(if (> numt 101)2 E! {! A" l; O
(command "arc" p17 "c" p2 p16)
$ T8 J! J% }6 J+ i (command "arc" p16 "c" p2 p17))4 m( q3 R5 f2 S6 v; x6 h0 Q1 ^) \- Z
(setq arc4 (entlast))+ t- P5 p0 i4 _; l
(setq p171 (polar p17 0.7854 (/ 0.4 diap)))6 o( w7 E* Y0 p% X1 g: V
(setq p172 (polar p17 3.9 (/ 0.4 diap))). M1 w) k" ~% W9 Z
(if (> numt 101)
; H7 ?9 y$ d4 h/ h# r2 j' O- `7 J (setq p18 (polar p2 (+ angi adj1 ang0) r0))1 k/ D$ d9 N; O
(setq p18 (polar p2 (+ adj2 ang0) r0)))4 E; _: [# P4 u3 ?, C
(setq p181 (polar p18 2.3 (/ 0.4 diap)))& P, E& @4 U7 ~# u8 ]6 e+ ~, G+ S0 A
(setq p182 (polar p18 5.5 (/ 0.4 diap)))
2 }0 l" P; q: y6 D (command "zoom" "w" p171 p172). U/ x/ A7 c0 \9 i
(if (> numt 101)
. @) ?8 e. D' Z( v m+ h6 P( \ (command "extend" pL1 "" p16 "")
# H- Y/ d& Y/ g9 a (command "extend" pL1 "" p17 ""))/ e( X7 U+ z( V) I. V/ l
(setq ang0 (/ (* ang0 180) pi))
+ m; v- W, ?5 G+ L. y* W (command "rotate" arc4 "" p2 ang0)
3 P# v* B# N; j (command "zoom" "w" p181 p182)4 v D+ i0 ?! l$ \& w* M3 f# f% N: [
(command "extend" L2 "" p18 "")# h, q( T# L L! } S
(command "zoom" "w" pz1 pz2)
! T. u& l v3 i4 B! b (command "trim" arc4 "" p5 "") ^% a- L' I1 @. N3 e
(command "erase" pl1 "")
- c7 A) l* X% V% p( N (command "mirror" L2 "" p2 p12 "")
2 D! i p4 U7 m" p) B) O ) ;end progn
7 f+ ^1 a3 H- q6 D# \7 X r8 i ) ;end if4 S" k- }: [6 O2 [8 e! a
) ;end progn
2 S+ s$ s0 b! s; k (progn
3 H _7 n: z( `- w% h( Q (setq ang12 (- (/ pi 2) (angle p2 p12)))
) ~# D/ ~9 L2 O, m) Q1 Y+ g (setq ang57 (atan (/ r1 h)))
' P( L/ s9 |1 N w (setq ang58 (- ang0 (* ang12 2) (* ang57 2)))
4 u: l+ ~& e+ Q7 @4 l R9 m: ]6 G (setq ang577 (+ (/ pi 2) ang57))4 z$ w+ z6 C. L
(setq ang588 (+ ang577 ang58))
A( J7 N' a8 D4 C( d9 B! u (setq p57 (polar p2 ang577 (+ r1 r0)))
) x0 E0 ~/ t& v$ ^) p (setq p577 (polar p2 ang577 r0))
+ C' ^) F' k& d: ?2 |3 b$ E (setq p588 (polar p2 ang588 r0)) 6 Z0 ?8 l" ]& z1 m w: ]
(setq p56 (list x2 (+ y2 h)))4 j* T, l8 L/ l# P
(command "arc" p577 "c" p57 p56)
! X* ~6 H5 s5 A. a" U6 X2 c (setq arc1 (entlast))! m: }4 |4 x) c& Q+ \, ~: T
(command "arc" p577 "c" p2 p588)' w! a; j: p" \, ]$ O
(setq arc2 (entlast)). f( a* D7 U# ~+ b% R4 _
(command "line" p56 p5 "")1 B) ]: | e% Y' a2 V: @
(setq L33 (entlast)): G! {$ R: U' Y2 D
(command "zoom" "w" p77 p88)' c# E" k( ?+ E5 `; t
(command "mirror" arc1 arc2 L2 L33 "" p2 p12 "")
5 B+ K: V; z D* f! \ (command "erase" arc2 "")$ ]! \/ F# n; O( [
) ;end progn * [& l/ M# w; A, h1 O, N
) ;end if
. S$ b4 h/ }! B; / C. x9 c' q! q$ r6 A) _' d4 n
(setq beta (angle p2 p3))' O4 Z" x0 q/ ~' ^' u
(setq ang2 (- (* angi 2) beta))( C0 C1 C" R! Z
(setq p15 (polar p2 ang2 orad)): N" ~+ N) x) R+ C9 X
(command "arc" p15 "c" p2 p3)2 v& [$ w5 n( d
(while (setq le (entnext le))
& V6 s, n" U3 N/ N1 \ y+ \6 B (ssadd le s)
$ y% j0 {+ M! k* X6 e3 a7 K" J, b$ F( k0 p )
9 ~4 L: J; v3 r6 w+ \+ P (command "array" s "" "p" p2 numt "" "")
w% Z. B( G/ L (setq q1 (nth 0 p2)). R+ B( ^8 q% K8 c; Q- |
(setq q2 (nth 1 p2)) p! A, b( b& c% |0 b% {
(setq q5 (+ q1 pitr 2))
! T* L ?$ f: y( x (setq q6 (- q2 pitr 2))
% T) j/ {' {) y6 } X- p- a2 t (setq q3 (- q1 pitr 2)) s& O4 U) \, R) y1 q
(setq q4 (+ q2 pitr 2))' \- Y% P5 E! |& o
(setq q1 (list q5 q6))% d6 h7 |' n3 c
(setq q2 (list q3 q4))4 O1 }0 e- N+ g2 J
(command "zoom" "w" q1 q2)( Z/ B& Y! ^- X- D
). h8 E0 C2 \ p! F
)8 B" o) S9 k# c. N+ X" z6 |- P
(setvar "pickbox" 5)2 M1 S- R/ H# m1 P; y% o/ c G: z ^
(setvar "aperture" 5)( M5 F# l Y: ^8 g, D
(setvar "osmode" 37)
2 L* |% h% [% x! u% Y
' C5 }; j, S9 \$ {0 @6 K3 H (princ "Finish gear ")
2 e1 L! l+ x7 W) e# `' F (princ numt)( E/ r9 ~! {0 {2 l2 l l! g1 W* q
(princ "T")
, y- e# `/ p+ f3 O (princ)
9 L2 d: k2 p K3 t; {8 F* a% h )
/ B8 f. }5 d) `7 S! r6 g7 ~1 }$ U
7 [/ h5 C8 [ m( Z$ i9 V |