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
,
36 rotate(a
= 90, v
= [0 ,0 ,1 ]){
37 cube([3 * mm_per_inch
, 0.5 * mm_per_inch
, material_width
]);}}
39 translate(v
= [-tab_length
,
40 (1.5 * mm_per_inch
+ material_width
) / 2 - tab_width
,
42 cube([3 * mm_per_inch
, 0.5 * mm_per_inch
, material_width
]);}
44 translate(v
= [(1.75 * mm_per_inch
+ material_width
) / 2 + tab_width
,
47 rotate(a
= 90, v
= [0, 0, 1]){
48 cube([3 * mm_per_inch
, 0.5 * mm_per_inch
, material_width
]);}}
50 translate(v
= [(1.75 * mm_per_inch
),
51 (1.5 * mm_per_inch
+ material_width
) / 2 - tab_width
,
53 cube([3 * mm_per_inch
, 0.5 * mm_per_inch
, material_width
]);}}
55 _4_40
= 0.1285 * mm_per_inch
/ 2; // size of hole for 4x40
56 _6_32
= 0.1495 * mm_per_inch
/ 2; // size of hole for 6x32
59 cylinder(h
= board_depth
, r
= 2 * _6_32
, $fn
= 20);}
62 cylinder(h
= board_depth
, r
= _6_32
, $fn
= 20);}
64 module
mounting_screw_hole(){
65 cylinder(h
= board_depth
, r
= _6_32
, $fn
= 20);}
67 module
bracket_screw_hole(){
68 cylinder(h
= board_depth
, r
= _6_32
, $fn
= 20);}
70 module
wheel_motor_holes(scale
){
71 translate([51 - 26.78, 38 - 10.8, 0] * scale
) {
73 translate([51 - 26.78, 38 - 22.23, 0] * scale
){
75 translate([51 - 18.05 - 17.45, 38 - 30.81, 0] * scale
){
76 mounting_screw_hole();}
77 translate([51 - 18.05, 38 - 30.81, 0] * scale
){
78 mounting_screw_hole();}
79 translate([7.5, 8.5, 0] * scale
){
80 bracket_screw_hole();}
81 translate([7.5, 21 + 8.5, 0] * scale
){
82 bracket_screw_hole();}}
84 module
wheel_mount(scale
){
86 cube(scale
* [board_length
+ material_width
,
87 board_width
+ material_width
,
89 wheel_motor_holes(scale
);}}
93 translate(v
= [0, 0, board_length
]) jig_lid();
98 translate(v
= [0, -2.1 * material_width
, material_width
]){
99 cube([board_length
+ material_width
,
100 3.1 * material_width
,
102 translate(v
= [0, -2.1 * material_width
, 0]){
103 cube([board_length
+ material_width
, material_width
, material_width
]);}
104 translate(v
= [-2.1 * material_width
, 0, material_width
]){
105 cube([3.1 * material_width
,
106 board_width
+ material_width
,
108 translate(v
= [-2.1 * material_width
, 0, 0]){
109 cube([material_width
, board_width
+material_width
, material_width
]);}}}