(defun C:gear (). r0 g: `2 @, b3 I Z# U# J
(setq numt nil
5 p1 [* A7 \, _, G( o. I- r; M! l diap nil # v0 {. ]. i# S2 Y, |: Z! c
prsa nil
5 G# E4 |1 Q& s% T) Y/ m pnts nil q/ `+ y6 E: l) x
test nil2 G' @! a' w! O/ v* c
pwd nil5 P0 `( G7 [. `+ b
)
* t2 U0 f+ |1 y, Q/ i5 v6 k, l - f% e1 U; p1 d/ A$ a8 o
(setq numt (getint "Number of teeth:<24>"))
+ a9 C* j- J* D5 j! O (if (= numt nil)
: R% y& Y9 J. x( I" E- X (setq numt 24)
5 r7 V: F4 c& ~2 h- m )1 B. F2 y& ?+ E! f
(setq diap (getreal "Modulus of gear:<0.5> "))
3 b9 o) X8 f, d* m$ u# V8 v( L: y (if (= diap nil)+ m! c t2 i R( A. L
(setq diap (/ 1 0.5))$ K& ?0 y0 X: b ~
(setq diap (/ 1 diap))( v1 l' T% V0 e- r
)5 p& S# U& L; Q- ~% ?* e
(setq prsa (getreal "Pressure angle:<20.0> ")). U- }$ v/ \( d; g% X( a, B: i2 v
(if (= prsa nil)
: A1 w% X, p0 B1 _ (setq prsa 20.0)" R6 x; A7 v+ o# ~+ `7 {
)
' J( C1 J8 d% Q: ]7 m6 { (setq pnts (getint "number of points on curve:<40> "))
4 G& T7 X0 I6 C (if (= pnts nil)) X( z5 T' p, u7 l t, j
(setq pnts 40), i `- T" t1 U
)
* ~# Y: Y. ]# `* H+ ^* z: \: T" s9 T/ u- D
; (setq pwd (getreal "Please input password:"))
* I9 p8 [. X* c4 K9 D8 [! y; (if (/= pwd 8833)
0 u3 H8 r1 Z5 [+ ~; K) p3 V; (setq numt 0)
6 C4 {$ p, [& g) T; t; )
$ m7 X4 ]4 t- ~' A; (if (= pwd nil)
3 A- k" \ N7 f/ B; (setq numt 0)
- R2 V) X1 i4 R8 H1 `; )
+ Z _- Y. c0 `/ M9 E" j- Q;
- b; b" L w: @! b" l (command "osnap" "non")
5 ?/ E4 O& D7 [5 M2 V) T (setvar "cmdecho" 0). r' L2 W: M3 C" y: U. t: u1 z
(setq oldvar (getvar "pickbox"))
: n$ A8 `3 J, o2 n! m (setvar "pickbox" 0)+ G7 }2 C% Q- T5 F3 P1 h: o
(setvar "aperture" 1)
" E- O* R5 s( o& t3 k (command "osmode" "0" )
/ N3 e. B D0 j D7 ^;
* t9 S' B( J' ^1 H6 k (setq prsa (/ (* prsa pi) 180.0))
* l/ h1 b1 {6 o( W (setq pitd (/ numt diap))
+ Z* _: s8 J5 m5 k% O; I (setq outd (/ (+ numt 2) diap))7 W# r. _5 O8 K
(setq basr (/ (* pitd (cos prsa)) 2))
$ T% \# n. P b (setq orad (/ outd 2.0)). ^: f4 U A: G: }
(setq z (- (expt orad 2.0) (expt basr 2.0)))7 Y1 P: N9 I) W7 W4 f5 r
(setq x (sqrt z))
+ ?& |5 p- I4 r9 f4 _ (setq paodd (atan (/ x basr))); @: [( C5 e0 u: M% R- A
(setq incr (/ paodd pnts))$ G4 w+ m7 Q+ D8 A
(setq p 0.0)+ P1 d0 R! }4 ~( `
(setq pitr (/ pitd 2.0))
+ ]( f" Z" |* V3 Q8 W* Q0 P (setq pang (/ 360. (* numt 4.0)))
H) U# K) X0 i: ] (setq pang (/ (* pang pi) 180.0))+ I h( f$ Q4 Z/ r
(graphscr)
( _* G1 [1 n( o: [ (setq p2 (getpoint "center of gear:"))
: r' B/ X/ l/ O9 f' c4 e7 y' e9 s! ] (setq y2 (cadr p2))% N* \' v k3 R3 ~$ O* G6 \3 q* ~
(setq x2 (car p2))
) L( b- H: x: ^/ T$ H3 |# W; } (setq r0 (/ (/ (- numt 2.5) diap) 2))" ^) f8 w# F7 f7 M$ d( m: Z& V7 U5 P/ ^
(setq r1 (/ 0.2 diap))
! J$ P$ T. P& v (setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1)))) O( t3 S4 T+ h
(setq ang0 (/ (* pi 2) numt))7 l1 Y4 j Q7 G
7 n. S4 t: u( j2 I S$ @ (setq y5 (+ y2 basr))8 O: _" W/ J( d" Z
(setq p5 (list x2 y5))% x: d% c# ~& g% ~0 a0 t
(setq y55 (+ y2 r0))
; @7 _7 F+ N5 w/ H% [9 o( @ (setq p55 (list x2 y55))6 F7 {& \7 B2 F9 T5 M
(setq p88 (list (+ x2 2) (+ y5 2)))
$ A; `9 I+ y/ U, ~; ~ (setq a3 (/ (* pi 5) 4))6 Z+ B5 b. d9 O. e* U2 i( ^
(setq a4 (/ pi 4))9 |+ i2 D ~! X% V* L) e
(setq pz3 (polar p2 a3 (* orad 1.5)))7 H# I6 j. y- f' D$ b2 f8 }
(setq pz4 (polar p2 a4 (* orad 1.5)))2 ^/ D8 E8 C0 D* l: E5 O
(command "zoom" "w" pz3 pz4)8 J5 a7 k3 X2 v: E* M) K0 C5 Y+ b
;2 h. w! {1 ^5 `9 b6 v9 E& J
(setq clay (getvar "CLAYER"))
; }2 }9 {) U ]2 Z) |* e. | (setq sblip (getvar "BLIPMODE"))
; n: |" i* J- G6 f( s (setq ts (tblsearch "LAYER" "CEN"))7 T: }7 e* E3 o$ ^! [: E
(if (null ts)
" W p: q0 H& h+ a# X" I (progn
& q; ~) E$ D$ D3 b8 v (prompt "\nCreating new layer - CEN. ")
" k2 L2 v6 o4 W (setvar "BLIPMODE" 0)# g: T8 L" L6 M4 M0 O% ?7 G
(command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "") % g: ^3 z4 t* c
)
: E1 F0 y9 F' n' _+ X3 M _ (progn
7 G3 {" m3 J4 F. e% p (if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" "")); A- G/ w% G `' q! s
(command "LAYER" "S" "cen" "")+ D5 s. ?3 P( S1 q2 w. |8 N( w6 ` t
) ]4 [! J( @7 t
)6 @) F9 ~( r& V( Z
(command "circle" p2 pitr)9 i8 [- e& c- k3 b. @
(setvar "BLIPMODE" sblip)
! N: _2 ~; }: }3 v (command "LAYER" "S" clay "")
; ~/ o. D- ]7 V I' X2 N8 j! g6 b;; D/ [% l2 u \9 s# h/ e) }
(setq a1 (- (/ pi 2 ) 0.1))
5 t: E; X8 g6 u (setq a2 (+ (/ pi 2) 0.1))! m: b+ G$ }6 b6 C
(setq pz1 (polar p2 a1 basr))
; {( p2 |. G3 i- \$ H (setq pz2 (polar p2 a2 orad)) _3 j0 Q! a' E
(command "zoom" "w" pz1 pz2)+ C/ g0 f; @. ^" {% U
(setq s (ssadd))
4 F& D/ Q( Y$ q0 j1 q (setq le (entlast))% L( S- S- K/ A1 B# j& o
(setq test 0)# h# c c5 b- U$ C! C- `7 r' P7 f, j
1 N4 z5 V9 ^ T. f) B$ Y; F (command "pline" p5); a+ ~: |4 w" ^, k: T% x
(setq p (+ incr p ))
5 M0 r2 y7 E' N% ^, W (while (> pnts 0)
4 X6 F$ Y* L- }# Z4 S7 H (setq e1 (sin p))2 Y5 y' A; y/ w! o+ w. o9 X
(setq e2 (cos p))
% P- X) J1 J1 D# T! w; W. [6 M& C (setq e (/ e1 e2))
& h8 U) a) _. X' L4 K; J0 A (setq j (- e p))
- g4 G& l2 K% ~! e0 B3 j! Z (setq x1 (* (/ (sin j) (cos p)) basr))
" g+ R+ H' R$ m* @8 N' E9 B (setq y1 (* (/ (cos j) (cos p)) basr))3 d% k/ y- J4 U0 E4 {# g! u
(setq x3 (+ x2 x1))8 b x% |6 x" A
(setq y3 (+ y2 y1))2 t9 g8 M; m3 c* a1 ?9 | [* M; g
(setq p3 (list x3 y3))
! e* X# ]' R% o. q (command p3)
& a2 i8 m7 _ o5 `, W f (setq p (+ incr p))
& w& V. i+ g% b( ]4 H* Y. H; l3 c (setq pnts (- pnts 1))
! c2 o- k4 ^6 Y: v3 Y& V6 ~ (if (/= test 1)
2 `, k4 g" X6 {" J( y. F7 X (progn
- ~6 E5 g) c1 R! b( N0 k& f (setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))) T' V6 s0 W, H3 d9 l& Y# i: b$ T* p3 \
(if (> hyp pitr)% y* W! K; X/ Q4 H' k/ m
(progn
) \7 t% j" p* [ (setq pint p3)
6 h- J; r. `+ ?: o# E5 D7 J; ^7 m (setq test 1)" y3 ]) R4 U! e5 X" v1 `, G
)
0 Y# N% P2 i9 a2 {9 x" e0 }8 U/ b )0 S# V. l% X+ z7 s! l0 ` |
);endif
& j) ?0 q, Q0 J4 t );endif
# R0 R! g# n5 e9 s, u )
& y: H3 l, h" h" x (command "")' I4 `! h+ W- h
(setq L2 (ssget "L"))
4 p' L: r1 R: ^- _ (initget "Y y N n")
/ n; }0 I- m$ m2 a4 D3 E3 x; ^ (setq ans (getkword "\n Finish the gear ?:<Y> "))
) }8 g- |2 M) l (if (/= ans "N")+ G: y+ W2 ?' N
(progn
3 L% |+ v8 K, |" X' u1 p+ b; J2 ^1 ~$ U (command "zoom" "w" pz1 pz2)
: f3 b, o, S# J6 _3 _" F7 s* C# z (setq p11 (osnap pint "inter"))7 Y2 Z/ V2 C" {+ G+ m
(setq ang (angle p2 p11)). c5 |6 z9 V2 t* b3 C; z$ { v; ?
(setq angi (- ang pang))
( @0 x) S3 L7 { (setq p12 (polar p2 angi 1.0))
: w* W: R& y, x Q q# y( x' P8 Z;/ b4 ~% A) `( @4 F* M% l/ Z9 `& }
(if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))
, A6 E9 U& n$ e R (progn
4 t8 w% [0 N! H& z1 t& S- H" n (if (< numt 42)
* f. [# j5 ]3 v (progn
! D e( w( B! H: f (setq p56 (list x2 (+ y2 r0)))
7 Y, K: \$ i$ ]1 M/ O9 v! n8 c (command "line" p56 p5 "")( J* o' o+ d+ Z
(setq L33 (entlast))
# a" {; N; b' \* o (command "zoom" "w" p77 p88)
: W! G3 S, g- Z0 X5 E (command "mirror" L2 L33 "" p2 p12 "")
0 V2 N @+ `8 J+ J1 s# ? (setq adj1 (- angi (/ pi 2)))# _# Q1 ~/ H5 I) K
(setq adj2 (- (/ pi 2)(* pang 4)))$ D) A B9 \" L# X+ {/ [+ c, C
(setq p17 (polar p2 (+ angi adj1) r0))4 l( |( A0 r- u7 p
(setq p16 (polar p2 adj2 r0)); {1 M* H' W9 p) K6 T k
(command "arc" p16 "c" p2 p17)) l9 }" N8 `- p, G2 k/ w
) ;end progn7 ~5 _" D. m, ?
(progn+ e" r, `0 X! w" V( Y; h% d3 i9 u3 V
(command "zoom" "w" p77 p88)
9 }! @* s$ M" u8 ?9 b (command "mirror" L2 "" p2 p12 "")
: E, [- h' R7 O7 K, ]( b7 C. }4 Z/ f8 j (setq pL1 (entlast))
. s5 ~4 G# [, b: ]4 M (setq adj1 (- angi (/ pi 2)))5 W, w( k/ j' n/ H: N
(setq adj2 (- (/ pi 2)(* pang 4)))8 w1 t A& P% ~3 D X
(setq p17 (polar p2 (+ angi adj1) r0))
) y, \5 q0 x* ~; E+ r' k9 }. M (setq p16 (polar p2 adj2 r0))
: O$ r9 _ N! X$ [) X5 s/ C" T (if (> numt 101)9 X8 b7 x6 l% R0 t1 H9 K! U
(command "arc" p17 "c" p2 p16) t0 u6 T& B# y, ^0 m
(command "arc" p16 "c" p2 p17))
, j) k1 i6 g$ M" Q0 V& d& a (setq arc4 (entlast))5 [/ q0 b$ v& g; s4 f
(setq p171 (polar p17 0.7854 (/ 0.4 diap)))
' S4 h1 c* C, B1 I% N% U" K (setq p172 (polar p17 3.9 (/ 0.4 diap)))
7 l8 M8 T9 W/ G ^- J/ r (if (> numt 101)6 L1 l( Q( M/ ^7 l8 N
(setq p18 (polar p2 (+ angi adj1 ang0) r0))
' h( w: Q# Z5 m ?+ e7 h (setq p18 (polar p2 (+ adj2 ang0) r0)))
9 n( m, j* \' R3 R (setq p181 (polar p18 2.3 (/ 0.4 diap))). z( K: z. p! M+ `, V* G
(setq p182 (polar p18 5.5 (/ 0.4 diap)))2 y$ g5 ^! j9 \' Z8 o/ h4 s5 S& n
(command "zoom" "w" p171 p172)
) Y( j( H- h; K (if (> numt 101)
3 W& f: f. c+ H1 z m) q% D (command "extend" pL1 "" p16 "")
( ~0 T) x8 e9 w$ q# r/ Y7 L) v (command "extend" pL1 "" p17 "")). E- V7 C x/ m& e) h( I
(setq ang0 (/ (* ang0 180) pi))
$ M+ b# S% o& d- U" f& l( E (command "rotate" arc4 "" p2 ang0)# O( Y, E3 R+ v1 v6 `) w9 r' p
(command "zoom" "w" p181 p182)
& w8 V5 `+ V& K; } (command "extend" L2 "" p18 "")
) ~5 E5 C+ ~, u! h% b/ b8 n' H/ Q (command "zoom" "w" pz1 pz2)
, I5 }6 \9 D; X$ Z: D5 o+ X (command "trim" arc4 "" p5 "")
/ b i! {% X, R (command "erase" pl1 "")
' q7 e6 {6 _) j2 K! [ (command "mirror" L2 "" p2 p12 "")8 g0 d4 S: Y; ~9 y% R
) ;end progn' {* O) S! m# ^7 U, \4 C
) ;end if# M* J$ n4 h2 T6 }" H
) ;end progn
8 n" e, X3 p, t; E7 d2 J (progn
6 i1 J. X3 {9 [2 h: b) W7 L4 t (setq ang12 (- (/ pi 2) (angle p2 p12))) $ q* ?$ D, H7 U, ~! }4 ^4 \8 D, R
(setq ang57 (atan (/ r1 h)))& P6 S/ m4 U, }9 o, b" e
(setq ang58 (- ang0 (* ang12 2) (* ang57 2))) p- S9 n+ v: d# U# q
(setq ang577 (+ (/ pi 2) ang57))6 B2 I3 U6 d& w# ~5 [% k
(setq ang588 (+ ang577 ang58))
( A: R4 ~ Y0 C (setq p57 (polar p2 ang577 (+ r1 r0)))3 s& y: i# {$ a" o. m( ]1 m8 [
(setq p577 (polar p2 ang577 r0))
: J2 P, y* Z+ E! T+ O) H* ] (setq p588 (polar p2 ang588 r0))
5 x/ r( s' T9 E" q (setq p56 (list x2 (+ y2 h)))
/ n4 e" s. M$ h' `* a (command "arc" p577 "c" p57 p56)" f' D1 _2 h; C V# S
(setq arc1 (entlast))+ `0 z. ~! K! w i' L
(command "arc" p577 "c" p2 p588)
* m4 k" M" ?8 i/ B (setq arc2 (entlast))
* w! w1 y/ ?3 ~2 C) X8 P, r (command "line" p56 p5 "")
" J0 }, |6 o/ v3 G2 C1 B: J (setq L33 (entlast))$ M5 U& n) Z- C3 _: c: s3 [, v3 K
(command "zoom" "w" p77 p88)
0 m2 I' ^& e2 L* e (command "mirror" arc1 arc2 L2 L33 "" p2 p12 "")$ M, ^& z$ A8 G7 ~
(command "erase" arc2 "")2 ?. r$ J. {( f. K) X. N
) ;end progn 0 C; R# o, m1 C% W- b' i6 J
) ;end if
, Z& o1 y. i# n0 m$ }" E;
4 c" b3 i/ k! g z) g3 w7 g5 [- g (setq beta (angle p2 p3))1 U F- h& F4 a: }9 H) I
(setq ang2 (- (* angi 2) beta))
: y+ T8 B& {* `0 m (setq p15 (polar p2 ang2 orad))
5 P, j5 v& X4 s$ W2 G (command "arc" p15 "c" p2 p3)" D" ?7 y( s- ^5 O. d! Y, F
(while (setq le (entnext le))1 \. x- y( U% T& R
(ssadd le s), B1 Q6 [* ~# j0 F) ^1 [! a
); [6 M/ }% ^1 u0 h* V6 |& u
(command "array" s "" "p" p2 numt "" "")! r8 [; `9 l9 ~( ^8 H4 ?
(setq q1 (nth 0 p2))% d4 j/ j9 }$ B' O# p* B$ e
(setq q2 (nth 1 p2))4 A# @$ L; w2 M; I4 c7 Q1 j9 B# t
(setq q5 (+ q1 pitr 2))
7 V& s; m/ ? s3 ?9 w7 p3 @" m r (setq q6 (- q2 pitr 2))6 f9 U. a. a) K
(setq q3 (- q1 pitr 2))" [9 x- U/ P3 K' t. }0 a
(setq q4 (+ q2 pitr 2))
/ Q& y# r s0 [( d2 g (setq q1 (list q5 q6))
, z/ s5 D) y# p8 e' X; U# r (setq q2 (list q3 q4))2 O) b, X; R5 O. p0 @, H
(command "zoom" "w" q1 q2)
1 u' x2 R$ N8 C7 l )
1 V \8 e* Y' _% |1 t7 k )
; H' ~. C- s$ f3 ~5 S (setvar "pickbox" 5)
o4 Q+ z% \0 t! j9 L6 y (setvar "aperture" 5)
, s; `, C5 y7 ~. {- s (setvar "osmode" 37)
) v8 t# l. H2 Q8 [; l$ I, T
8 L! E+ V9 N0 J7 J9 i; } (princ "Finish gear ")
' z6 M; h" f/ Z* t$ ~$ H (princ numt)
5 F1 |% g2 D( ?4 R/ s( p/ ~3 \ (princ "T")9 u: |* @- f: G/ U+ @. D# i7 \1 X5 K& t
(princ)- i! l% l3 z! o' ^) Y$ M
)2 l5 d2 X' A0 w0 ?, K
& ^0 w% q3 Y4 G
|