(defun C:gear ()8 k: C5 T* h& O
(setq numt nil; W6 H, e3 L* f. y; K8 i. l0 s
diap nil ; S" i, }& X6 u2 z+ }9 M* ]8 s
prsa nil
/ `- l0 K& ?5 w# [ pnts nil/ {3 ?/ {0 n5 S# K! h
test nil, G. g& A( H5 u3 g2 R
pwd nil# D6 a: j: B" d# ^. s8 H- n
)0 D+ r6 {: u' N5 w4 {
- l; w0 ~, \( k
(setq numt (getint "Number of teeth:<24>"))
' K8 U2 Q6 X+ c5 A (if (= numt nil)% z7 k5 u9 ?6 q$ M: p% R! W
(setq numt 24)* m" Z; W! V. ?# l; U) d
)' D3 G, X3 c6 p( m# ~, [
(setq diap (getreal "Modulus of gear:<0.5> "))
/ Z2 z- E0 `: y+ T (if (= diap nil)
# x# o% z1 P; x' O (setq diap (/ 1 0.5))/ x$ m7 M% J. G
(setq diap (/ 1 diap))
- _ n5 _5 ^" R )8 A2 ^% G: a7 a0 _4 E; h t7 B
(setq prsa (getreal "Pressure angle:<20.0> "))% w3 f+ m* H( H, U8 a) \2 b8 |0 u; y
(if (= prsa nil)
, ^+ _* p8 F X% M% z (setq prsa 20.0)! w- T, t0 B* _* y
)* Y- X; o- ^+ N6 ~; q+ N
(setq pnts (getint "number of points on curve:<40> "))/ {6 K2 Z4 c9 b# m" J" W, c" C3 I
(if (= pnts nil). A% P. e1 R, \' P4 l. m
(setq pnts 40)
1 ^" F3 u* h! p )
9 k& {' {7 }- n; @# s4 ]8 c: t2 S8 A/ |6 ^* o3 f
; (setq pwd (getreal "Please input password:"))
; J( A! T6 H! t4 {; (if (/= pwd 8833); y) A. u) F% _: p2 U. K7 T6 s
; (setq numt 0)
+ M9 ~& q: t+ w% G1 E9 {; )
' m$ ]1 j" B# w1 i; (if (= pwd nil)5 R3 a6 Z5 u% X6 B( ]% w
; (setq numt 0)' s j3 K( B d/ ~8 ]6 H# r: K
; )
% O9 k2 m5 ?4 k, b: J- \8 b) P;6 P4 ~. q/ p6 e
(command "osnap" "non")" g' f* e( N% h
(setvar "cmdecho" 0)9 j+ O. w' ]( y+ n
(setq oldvar (getvar "pickbox"))7 R8 B8 s: A# n. d: |3 |9 D8 C% X
(setvar "pickbox" 0)
, a# m' M! |* E! Q (setvar "aperture" 1)! S7 x! _4 o( z5 Z0 T! A/ Q
(command "osmode" "0" )
) k, m4 T" t. l! l9 U$ r;) H Y1 X( e8 j+ g
(setq prsa (/ (* prsa pi) 180.0))
|% [' Z2 { Y2 Y (setq pitd (/ numt diap))
8 g" t+ ?0 [( N9 C" l* [# o (setq outd (/ (+ numt 2) diap))
9 o/ L; S* H, U% v; M" y; K! v (setq basr (/ (* pitd (cos prsa)) 2))1 T' H$ I* M7 i+ B
(setq orad (/ outd 2.0))+ L5 v: p z' ]; z
(setq z (- (expt orad 2.0) (expt basr 2.0)))5 z# `) C! |3 \. j- p- b
(setq x (sqrt z))2 [- y- D' Q; ?# g2 ` U7 g
(setq paodd (atan (/ x basr)))9 p" ~. F9 I( A8 ` o, T
(setq incr (/ paodd pnts))
7 z6 H+ T8 H' ~6 t3 d# ^8 | (setq p 0.0)
3 C+ c5 S" z& s* E% b( A (setq pitr (/ pitd 2.0))
1 ?( t4 n6 e& }* v- W, Q (setq pang (/ 360. (* numt 4.0))): C% l3 [4 ?2 p! I0 z C
(setq pang (/ (* pang pi) 180.0))( ^1 f4 x# X; w
(graphscr)/ D" H' [/ K1 I) \% T) ~
(setq p2 (getpoint "center of gear:"))( m' W( s; v: @$ _' _6 ]9 l
(setq y2 (cadr p2))- u% q9 V4 r9 y; H
(setq x2 (car p2))
6 p# x# p! ~- {# h* n6 ~2 N* l (setq r0 (/ (/ (- numt 2.5) diap) 2))
" L+ q: d: u8 J, j; V$ P (setq r1 (/ 0.2 diap))/ j2 z1 |% |8 A( n" R
(setq h (sqrt (- (* (+ r1 r0) (+ r1 r0)) (* r1 r1))))9 p8 j5 o0 o. Q- ]" L( |
(setq ang0 (/ (* pi 2) numt))
. |: y9 w# D1 F( }% s
! ^0 o$ Y/ `8 a, g$ P$ N, Z (setq y5 (+ y2 basr))
! l' a9 E# I% {$ d3 a. m9 @ (setq p5 (list x2 y5))
% v F! G1 k% `3 d; T3 }& n7 q (setq y55 (+ y2 r0))
5 M# m k& U8 G; F0 t# M (setq p55 (list x2 y55))
, f- d: \5 Z: e" {% t! X (setq p88 (list (+ x2 2) (+ y5 2)))
$ K- h- Y' ~/ a; J2 | (setq a3 (/ (* pi 5) 4))
3 O( i& _! w* Z (setq a4 (/ pi 4))
" y! z; D& }6 q8 O( ], B (setq pz3 (polar p2 a3 (* orad 1.5)))0 z: R4 _! w& G1 @( G8 ?, Y
(setq pz4 (polar p2 a4 (* orad 1.5)))
6 I; B7 s' |; a4 w2 w7 E- m% c! J (command "zoom" "w" pz3 pz4)
# [* Z2 h# D' b, @;% @ g( k, }, u/ z% }5 G `
(setq clay (getvar "CLAYER"))
, z( @ U. g6 {' p1 T (setq sblip (getvar "BLIPMODE"))
5 @4 g) f2 B0 x, \ (setq ts (tblsearch "LAYER" "CEN"))
" e3 |5 G9 v1 d. K1 C (if (null ts)
2 E! ^ L3 l) _) r+ q (progn
8 B L+ L! ? ? (prompt "\nCreating new layer - CEN. ")
2 ^3 ?+ d' R6 a/ R9 E (setvar "BLIPMODE" 0)9 q1 m! }9 Z2 n* `6 S7 o
(command "LAYER" "M" "CEN" "LT" "CENTER" "CEN" "C" "RED" "CEN" "") 1 q0 A4 ~/ Q6 b
) C* y- w+ u% g) k, a
(progn
3 `9 \# Q/ o! g s9 r (if (> (cdr (assoc 70 ts)) 0) (command "LAYER" "T" "CEN" "ON" "CEN" "U" "CEN" ""))$ e1 p4 B5 H) z& [
(command "LAYER" "S" "cen" "")
! Y- l# h3 V, p O )) N% S' B) x- x9 L7 _2 o8 X
), P3 P& F! y6 |' h* N o& c
(command "circle" p2 pitr)7 w9 ?6 @% r" w) J6 ~, r. S
(setvar "BLIPMODE" sblip)5 A _+ L1 r* E) m- j0 o7 f4 P
(command "LAYER" "S" clay "")
/ _4 W. I. C8 b! M' X3 k;* G/ N/ p& X, X3 Y' ]( o I
(setq a1 (- (/ pi 2 ) 0.1)); U4 x K9 ~# P. {7 j
(setq a2 (+ (/ pi 2) 0.1)): ^1 M( D+ @: e$ |0 y5 B
(setq pz1 (polar p2 a1 basr))
: X+ M `. E, I (setq pz2 (polar p2 a2 orad)). b* ?1 z. x8 _1 t9 X
(command "zoom" "w" pz1 pz2)
; N# S" P) \- u (setq s (ssadd))% Y5 w) x' T/ R& _
(setq le (entlast)). r% C9 x. G+ L7 _ M7 @
(setq test 0)
* P9 b( F& m' t( o9 {- _6 ^ l, T3 |- ^ z) {+ f
(command "pline" p5)
1 I) n2 u& o9 U: x1 P4 y& z (setq p (+ incr p ))
0 }9 x4 N* f. w. ~0 J& z: f (while (> pnts 0)+ V4 T1 O( m0 K; {5 _
(setq e1 (sin p))
2 ^* C. `% @. G' j7 c (setq e2 (cos p))
3 R1 o2 r2 {* z i0 {' X m (setq e (/ e1 e2))
2 B: l+ k2 y+ \; @1 N (setq j (- e p))
9 }8 G' _1 P& u8 q, I/ L2 l (setq x1 (* (/ (sin j) (cos p)) basr))
' _( O4 k6 |( M1 l1 L( n7 R (setq y1 (* (/ (cos j) (cos p)) basr))
8 |. O! f/ [* }3 i' M2 k! X, j5 ~ (setq x3 (+ x2 x1))
0 Z& p; L8 S7 @0 b# \ (setq y3 (+ y2 y1))
1 m5 F0 r2 x0 m% y% }/ x2 ?! T (setq p3 (list x3 y3))
7 R- M+ T2 a1 O0 k: r2 T (command p3)+ F( M" z5 M$ Y5 M
(setq p (+ incr p))- ]- [) u2 n5 Q
(setq pnts (- pnts 1))
) Z4 `) U) p- _ (if (/= test 1)
. g B% E, D$ U0 S (progn
4 W% U9 K0 Q u; t& w (setq hyp (sqrt (+ (expt x1 2) (expt y1 2))))
& ^* R u" p, d6 m (if (> hyp pitr)
* H& ]/ b9 H0 \; D) k (progn
. S9 e) |7 H$ X0 y* B/ m; B (setq pint p3)
1 L/ t" }: Q/ g; E% ^$ u (setq test 1)3 X: E9 _$ H, l5 @! }
)9 o+ L- A7 E4 @ e2 Q' \
)
. e$ S. W1 \% T; X2 q% Q );endif) {1 F: A& h* L$ m' H: d
);endif0 Q. _7 K: \1 @) ?
)
9 [ ^# @/ l/ [+ |3 @2 H% _8 e4 x2 @5 ` (command "")
6 a- M* l5 y3 P, g/ ? (setq L2 (ssget "L"))' T9 f# \3 T+ [# f' K3 z& p
(initget "Y y N n")& y8 k2 H/ N6 y. {. q
(setq ans (getkword "\n Finish the gear ?:<Y> "))$ S$ W, R; R2 s9 r8 i4 p' i8 E' u
(if (/= ans "N")
7 U a* ]. a2 l5 z9 @) {* A# \1 | (progn
& e7 l ^* {" I0 |, |* S, k+ S6 |( e (command "zoom" "w" pz1 pz2)0 n8 O+ ~/ V8 G
(setq p11 (osnap pint "inter"))
. W4 }: w/ h6 r3 g O- F (setq ang (angle p2 p11))5 K2 `3 ?- s2 d8 f) E
(setq angi (- ang pang))3 I: Z/ p8 y. z5 Q& M
(setq p12 (polar p2 angi 1.0))7 @, u7 h* w8 h( S( A) v4 P! z
;9 f# H$ | U! A+ h
(if (< (* 0.94 numt (/ 1 diap)) (* h 2.0005))
) T& y/ A2 |9 i0 l" e (progn% q" i+ M2 q2 T+ U) ?# X
(if (< numt 42)
6 A! q/ M- p9 g% e5 Q (progn
0 k$ {( C; ~" P' W. C3 y1 D! d (setq p56 (list x2 (+ y2 r0)))/ q1 o4 z! n1 g6 S
(command "line" p56 p5 "")( z& m; B: x- g; T8 q7 j
(setq L33 (entlast))$ K: I- x# U ]) c3 d' u! T
(command "zoom" "w" p77 p88)3 ?* r8 t+ T0 e% y
(command "mirror" L2 L33 "" p2 p12 "")
5 u0 N0 r0 b% D# A. t2 J" m (setq adj1 (- angi (/ pi 2))) b7 S2 p9 m( f- H
(setq adj2 (- (/ pi 2)(* pang 4)))
& h; ^' G1 f3 L+ P (setq p17 (polar p2 (+ angi adj1) r0))
" S5 {5 b' j3 Q; {* L (setq p16 (polar p2 adj2 r0)); m0 n, C. k$ S% e1 }9 S( E* u: s
(command "arc" p16 "c" p2 p17)) X! c# I: v3 f ]; a# }" `
) ;end progn
@! |0 G1 k* R9 t (progn$ J' w m8 o8 O2 J; e& u8 n' L$ B! C; V+ F
(command "zoom" "w" p77 p88)( g! I5 X3 `* R6 m: l3 r
(command "mirror" L2 "" p2 p12 "")# t u" k- J$ H+ W
(setq pL1 (entlast)) 0 [% R$ V8 U4 U, f( G
(setq adj1 (- angi (/ pi 2)))$ F: Y& [: @6 ^3 R; W, l
(setq adj2 (- (/ pi 2)(* pang 4)))* e6 S# I# s1 Q' M/ u' k
(setq p17 (polar p2 (+ angi adj1) r0))
7 u- g. F+ R! i: F5 ~ (setq p16 (polar p2 adj2 r0))
" h, G2 X9 d8 t0 ~: x" y (if (> numt 101)
2 P0 E: u' ~6 n" Y/ ]; N# g (command "arc" p17 "c" p2 p16)
* f5 A; w: p# d0 A% V/ w (command "arc" p16 "c" p2 p17))( z% q( I+ E- }4 A
(setq arc4 (entlast))
7 E1 c$ w8 ~% Q" f! |" d (setq p171 (polar p17 0.7854 (/ 0.4 diap)))
0 |0 \$ {+ \* m. e' [ (setq p172 (polar p17 3.9 (/ 0.4 diap)))
" o$ s1 }4 D4 t) A' p* @; T (if (> numt 101)- V% l" f6 o i2 l& T& M
(setq p18 (polar p2 (+ angi adj1 ang0) r0))
& n# p9 \: L& I% E' F& K (setq p18 (polar p2 (+ adj2 ang0) r0)))% m9 d8 d; P( L/ K3 m8 p5 j/ i4 u
(setq p181 (polar p18 2.3 (/ 0.4 diap)))
6 _" N+ j/ p; K/ H" Y3 K9 i (setq p182 (polar p18 5.5 (/ 0.4 diap)))8 A! r. F8 B- N% B% I
(command "zoom" "w" p171 p172): f0 q- v' k9 x7 |- z9 s( [
(if (> numt 101)9 u; Y& |% X, d# r
(command "extend" pL1 "" p16 "") ; u" e" Z. x7 b7 y6 C( g9 A
(command "extend" pL1 "" p17 ""))
7 U% ]! R+ l+ M; u (setq ang0 (/ (* ang0 180) pi))
( X5 V& |$ Q* W, ^ (command "rotate" arc4 "" p2 ang0)
: f) j( f& d7 x! `- Y (command "zoom" "w" p181 p182)( ~/ q& f) t: j
(command "extend" L2 "" p18 "")
c# J0 P# B# q" z6 H1 y# o (command "zoom" "w" pz1 pz2)# s5 v' O: D1 ~! i& k
(command "trim" arc4 "" p5 ""). q) r" c5 \) ~
(command "erase" pl1 "")7 q' f2 R! l2 S; }) [6 ]& `
(command "mirror" L2 "" p2 p12 "")
* m+ v2 `( M, H, w ) ;end progn. R& I/ c- `" E% R, k- {
) ;end if& Q+ S7 ?. m0 }2 _
) ;end progn
* M" U& F; p8 I3 K2 e8 e5 ~+ E (progn
# d4 L% d# F1 k( S* N: d (setq ang12 (- (/ pi 2) (angle p2 p12))) 0 z3 M4 r3 N7 |% V
(setq ang57 (atan (/ r1 h)))
' G0 T, s: H- @, F/ e* t (setq ang58 (- ang0 (* ang12 2) (* ang57 2)))
8 Q: ]2 q! I0 v0 M5 S' Z (setq ang577 (+ (/ pi 2) ang57))4 `. P9 `9 ]% L7 I9 G
(setq ang588 (+ ang577 ang58))
\. O7 ?. }- u4 i. _/ {! w (setq p57 (polar p2 ang577 (+ r1 r0)))
4 x% q6 u$ r4 O' b6 E (setq p577 (polar p2 ang577 r0))* }& h% e$ l: ?4 n/ X
(setq p588 (polar p2 ang588 r0))
9 X+ t9 v3 S; F8 X) f2 h (setq p56 (list x2 (+ y2 h)))
n; a3 j( n2 Y/ P: l (command "arc" p577 "c" p57 p56)
! ` K; z' a" e3 ] (setq arc1 (entlast))
5 _1 T! U4 x* x. S/ j (command "arc" p577 "c" p2 p588)
2 n8 N/ d5 a3 |. ^ (setq arc2 (entlast))7 z: h6 b' e2 ~" b1 R' ~: r
(command "line" p56 p5 "")# B% i4 P% m' C+ ^* `* y
(setq L33 (entlast))! f8 O/ V! }* S' h( w7 ^
(command "zoom" "w" p77 p88)
1 C. M" ]% O6 t! K8 F2 J (command "mirror" arc1 arc2 L2 L33 "" p2 p12 "")
( o* y: T! O1 t. z* q; m (command "erase" arc2 "") M1 N; l) Q* j/ n
) ;end progn " S9 p& n3 F8 ^& X% v3 U. ]
) ;end if
3 L$ x5 r0 i2 ~" ]% w6 m1 f; n8 \;
- w) r4 b% o1 _' U% `5 Q2 X (setq beta (angle p2 p3))
w R6 V& x u& D! D% f" a+ {$ {* h (setq ang2 (- (* angi 2) beta))) L! `7 D* ]3 }' G
(setq p15 (polar p2 ang2 orad))2 V) N; k/ p% ?, E _7 Z8 C
(command "arc" p15 "c" p2 p3)' Q8 G3 Y0 ` g" Q( n& Q
(while (setq le (entnext le))% i1 y) v0 @7 S, @. q' e/ ^+ \
(ssadd le s): _6 c9 h$ @4 Y9 b: d
)
" v( ?2 [) h1 p+ x0 s (command "array" s "" "p" p2 numt "" "")
( |2 s) k( v" L8 U1 k (setq q1 (nth 0 p2))
2 R$ o- `3 Y, E! ~) ^9 } (setq q2 (nth 1 p2))/ _; b( U3 f( Y+ i) l
(setq q5 (+ q1 pitr 2))* `# E( P; H9 B' ]# o2 T' T) t
(setq q6 (- q2 pitr 2))
( C/ M+ F; \5 x5 h (setq q3 (- q1 pitr 2))3 z" t1 c% o# w& D1 s- h* P/ h
(setq q4 (+ q2 pitr 2))( s+ b) W9 C% n: c. X* u
(setq q1 (list q5 q6))
8 X% w& m) y2 h: S; Q! M (setq q2 (list q3 q4))5 T5 K! o& d* e W0 M
(command "zoom" "w" q1 q2)# G: W' D& w( j: C
)* w5 V" d3 a. C' w7 y0 c0 y
)- E( b) Q8 K% i! H9 o1 k' V
(setvar "pickbox" 5)0 E, N% q% F5 e4 V! R) R o- c
(setvar "aperture" 5)7 {' }8 N, ~% o; M; n2 G+ H2 Y
(setvar "osmode" 37)
/ ^$ O' U1 e9 D2 I
4 l3 {( H" L$ {9 ` (princ "Finish gear ")5 d4 g' V" L. o# w- x
(princ numt)! R- D; `6 g$ u3 [ w8 {! j, E
(princ "T")
5 F9 Y# g3 Y% W, {( s (princ)
5 m: x) T. l m' M9 \ )+ S6 }. u- y% m, m3 Q, X8 p9 C& P
0 d+ I, o" S" C. i/ m( }- x! }' A O |