source: robotics/car/design/2014.06.15-Robotics-Drill_Mount-v1/Robotics-Drill_Mount-v1.scad @ 34e955d

// Drill Mount
// - all numbers are in mm

// Default direction reference:
// X - right
// Y - forward/away
// Z - up

// NOTE: All measurements for direction switch are looking down on switch from above with movable piece pointed foward/away (y)

switch_base_x = 17;
switch_base_y = 28;
switch_base_z = 10;

wall_thickness = 10;

mount_plate_thickness = 4;
mount_plate_screw_clearance = 12;

screw_hole_diameter = 1.75;
screw_head_diameter = 4.20;
screw_head_height = mount_plate_thickness / 4;

// Left Wall
left_wall_x = wall_thickness; // 10
left_wall_y = switch_base_y + (wall_thickness * 2); // 48
left_wall_z = switch_base_z; // 10

// Right Wall
right_wall_x = left_wall_x;
right_wall_y = left_wall_y;
right_wall_z = left_wall_z;

// Rear Wall
rear_wall_x = switch_base_x; // 17
rear_wall_y = wall_thickness; // 10
rear_wall_z = 13; // 13

// Front Wall
front_wall_x = switch_base_x; // 17
front_wall_y = wall_thickness; // 10
front_wall_z = 5; // 5


// Switch Groove
switch_groove_x = 6;
//switch_groove_y = 1.7;
switch_groove_y = 20.4;
switch_groove_z = 1;


// Volume Gap - creates some extra space to cut down on print material
volume_gap_x = 6;
volume_gap_y = 6;
volume_gap_z = 6;


// Mounting Platform
mount_platform_x = switch_base_x + (wall_thickness * 2) + (mount_plate_screw_clearance * 2);
mount_platform_y = switch_base_y + (wall_thickness * 2);
mount_platform_z = mount_plate_thickness;


module switch_mount(switch_base_x, switch_base_y, switch_base_z) {
        difference() {
                union() {

                        // Direction Switch
//                      translate(v=[0,0,0]){
//                              cube([switch_base_x, switch_base_y, switch_base_z], center=true);
//                      }

                        // Left Wall
                        translate(v=[(-switch_base_x/2)-(left_wall_x/2), 0, 0]){
                                cube([left_wall_x, left_wall_y, left_wall_z], center=true);
                        }

                        // Right Wall
                        translate(v=[(switch_base_x/2)+(right_wall_x/2), 0, 0]){
                                cube([right_wall_x, right_wall_y, right_wall_z], center=true);
                        }

                        // Rear Wall
                        translate(v=[0, (-switch_base_y/2)-(wall_thickness/2), (rear_wall_z-switch_base_z)/2]){
                                cube([rear_wall_x, rear_wall_y, rear_wall_z], center=true);
                        }

                        // Front Wall
                        translate(v=[0, (switch_base_y/2)+(wall_thickness/2), (front_wall_z-switch_base_z)/2]){
                                cube([front_wall_x, front_wall_y, front_wall_z], center=true);
                        }

                        // Mount Plate
                        translate(v=[0, 0, -(switch_base_z+mount_platform_z)/2]) {
                                cube([mount_platform_x, mount_platform_y, mount_platform_z], center=true);
                        }

                } // union()


                // Front Switch Groove
                translate(v=[0, 0, -5]){
                        cube([switch_groove_x, switch_groove_y, switch_groove_z], center=true);
                }


                // Front Left Screw Hole
                translate(v=[-(switch_base_x/2)-(left_wall_x/2)-(mount_plate_screw_clearance/1.2), mount_platform_y/4, -(switch_base_z/2)-(mount_platform_z/2)-(mount_plate_thickness/2)])
                {
                        cylinder(r=screw_hole_diameter, h=mount_plate_thickness);
                }
                // Front Left Screw Head
                translate(v=[-(switch_base_x/2)-(left_wall_x/2)-(mount_plate_screw_clearance/1.2), mount_platform_y/4, -(switch_base_z/2)-screw_head_height])
                {
                        cylinder(r=screw_head_diameter, h=screw_head_height);
                }

                // Rear Left Screw Hole
                translate(v=[-(switch_base_x/2)-(left_wall_x/2)-(mount_plate_screw_clearance/1.2), -mount_platform_y/4, -(switch_base_z/2)-(mount_platform_z/2)-(mount_plate_thickness/2)])
                {
                        cylinder(r=screw_hole_diameter, h=mount_plate_thickness);
                }
                // Rear Left Screw Head
                translate(v=[-(switch_base_x/2)-(left_wall_x/2)-(mount_plate_screw_clearance/1.2), -mount_platform_y/4, -(switch_base_z/2)-screw_head_height])
                {
                        cylinder(r=screw_head_diameter, h=screw_head_height);
                }


                // Front Right Screw Hole
                translate(v=[(switch_base_x/2)+(right_wall_x/2)+(mount_plate_screw_clearance/1.2), mount_platform_y/4, -(switch_base_z/2)-(mount_platform_z/2)-(mount_plate_thickness/2)])
                {
                        cylinder(r=screw_hole_diameter, h=mount_plate_thickness);
                }
                // Front Right Screw Head
                translate(v=[(switch_base_x/2)+(right_wall_x/2)+(mount_plate_screw_clearance/1.2), mount_platform_y/4, -(switch_base_z/2)-screw_head_height])
                {
                        cylinder(r=screw_head_diameter, h=screw_head_height);
                }

                // Rear Right Screw Hole
                translate(v=[(switch_base_x/2)+(right_wall_x/2)+(mount_plate_screw_clearance/1.2), -mount_platform_y/4, -(switch_base_z/2)-(mount_platform_z/2)-(mount_plate_thickness/2)])
                {
                        cylinder(r=screw_hole_diameter, h=mount_plate_thickness);
                }
                // Rear Right Screw Head
                translate(v=[(switch_base_x/2)+(right_wall_x/2)+(mount_plate_screw_clearance/1.2), -mount_platform_y/4, -(switch_base_z/2)-screw_head_height])
                {
                        cylinder(r=screw_head_diameter, h=screw_head_height);
                }



                // Volume Gap
                translate(v=[0, (-switch_base_y/2)-(wall_thickness/2), 0]){
                        cube([volume_gap_x, volume_gap_y, volume_gap_z], center=true);
                }

        } // difference()
}

switch_mount(switch_base_x, switch_base_y, switch_base_z);


// Quick reference
// translate() - Translates (moves) its child elements along the specified vector. The argument name is optional.
// difference() - 

// Cube  
// Creates a cube at the origin of the coordinate system. When center is true the cube will be centered on the origin, otherwise it is created in the first octant. The argument names are optional if the arguments are given in the same order as specified in the parameters
//
// Parameters
//
// size 
// v=Decimal or 3 value array. If a single number is given, the result will be a cube with sides of that length. If a 3 value array is given, then the values will correspond to the lengths of the X, Y, and Z sides. Default value is 1.
//
// center 
// Boolean. This determines the positioning of the object. If true, object is centered at (0,0,0). Otherwise, the cube is placed in the positive quadrant with one corner at (0,0,0). Defaults to false