2 // GNU AGPLv3 (or later at your option)
3 // project available at these locations:
4 // https://gitorious.org/ozzloy/challenge-bot
5 // https://github.com/waynegramlich/challenge-bot
7 // use this drill jig for putting holes in a motor mount for screws
8 // and motor shaft. the four tabs at the bottom are for clamping
13 material_width
= (1/8) * mm_per_inch
;
15 board_length
= 1.75 * mm_per_inch
;
16 board_width
= 1.5 * mm_per_inch
;
17 board_depth
= (3/16) * mm_per_inch
;
18 tab_length
= 3 * mm_per_inch
;
19 tab_width
= (1/4) * mm_per_inch
;
22 rotate(a
= 90, v
= [1, 0, 0]) {
23 cube([board_length
+ material_width
,
24 1.75 * mm_per_inch
+ material_width
,
27 translate(v
= [0, -material_width
, 0]){
28 rotate(a
= -90, v
= [0, 1, 0]) {
29 cube( [1.75 * mm_per_inch
+ material_width
,
30 1.5 * mm_per_inch
+ 2 * material_width
,
33 translate(v
= [(1.75*mm_per_inch
+ material_width
)/2 + tab_width
,
35 rotate(a
= 90, v
= [0 ,0 ,1 ]){
36 cube([3*mm_per_inch
, 0.5*mm_per_inch
, material_width
]);}}
38 translate(v
= [-tab_length
,
39 (1.5*mm_per_inch
+ material_width
)/2 - tab_width
,
41 cube([3*mm_per_inch
, 0.5*mm_per_inch
, material_width
]);}
43 translate(v
= [(1.75*mm_per_inch
+ material_width
)/2 + tab_width
,
46 rotate(a
= 90, v
= [0, 0, 1]){
47 cube([3*mm_per_inch
, 0.5*mm_per_inch
, material_width
]);}}
49 translate(v
= [(1.75*mm_per_inch
),
50 (1.5*mm_per_inch
+material_width
)/2 - tab_width
,
52 cube([3*mm_per_inch
, 0.5*mm_per_inch
, material_width
]);}}
54 _4_40
= 0.1285*mm_per_inch
/2; // size
of hole
for 4x40
55 _6_32
= 0.1495*mm_per_inch
/2; // size
of hole
for 6x32
58 cylinder(h
= board_depth
, r
= 2*_6_32
, $fn
=20);}
61 cylinder(h
= board_depth
, r
= _6_32
, $fn
=20);}
63 module
mounting_screw_hole(){
64 cylinder(h
= board_depth
, r
= _6_32
, $fn
=20);}
66 module
bracket_screw_hole(){
67 cylinder(h
= board_depth
, r
= _6_32
, $fn
=20);}
69 module
wheel_motor_holes(scale
){
70 translate([ 51-26.78,38-10.8, 0] * scale
) {
72 translate([ 51-26.78,38-22.23, 0] * scale
){
74 translate([51-18.05-17.45,38-30.81, 0] * scale
){
75 mounting_screw_hole();}
76 translate([51-18.05,38-30.81, 0] * scale
){
77 mounting_screw_hole();}
78 translate([7.5,8.5, 0] * scale
){
79 bracket_screw_hole();}
80 translate([7.5,21+8.5, 0] * scale
){
81 bracket_screw_hole();}}
83 module
wheel_mount(scale
){
85 cube(scale
* [board_length
+ material_width
,
86 board_width
+ material_width
,
88 wheel_motor_holes(scale
);}}
92 translate(v
= [0, 0, board_length
]) jig_lid();
97 translate(v
= [0, -2.1 * material_width
, material_width
]){
98 cube([board_length
+ material_width
,
101 translate(v
= [0, -2.1 * material_width
, 0]){
102 cube([board_length
+ material_width
, material_width
, material_width
]);}
103 translate(v
= [-2.1 * material_width
, 0, material_width
]){
104 cube([3.1 * material_width
,
105 board_width
+ material_width
,
107 translate(v
= [-2.1 * material_width
, 0, 0]){
108 cube([material_width
, board_width
+material_width
, material_width
]);}}}