Created
October 20, 2019 01:41
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$fn = 100; | |
motor_diameter = 107; | |
crank_shaft_length = 29; | |
total_length = 125; | |
motor_diameter_tolerance = 1; | |
motor_diameter_with_tolerance = motor_diameter + motor_diameter_tolerance; | |
plate_diameter = motor_diameter_with_tolerance * 1.35; | |
plate_height = plate_diameter + 15; | |
plate_width = plate_diameter + 15; | |
// M8 screw, sizings taken from 'clearance hole' at: https://trfastenings.com/products/knowledgebase/tables-standards-terminology/Tapping-Sizes-and-Clearance-Holes | |
m8_hole_diameter = 9 + 2; | |
// M6 screw | |
m6_hole_diameter = 6.6 + 1; | |
inner_screw_distance = 95; | |
drive_shaft_diameter = 45; | |
union() { | |
// linear_extrude(height = 2) | |
through_plate(); | |
// mount_plate(); | |
%picture_outline(); | |
} | |
module picture_outline() { | |
rotate(270) | |
translate([-87.25, -79]) | |
linear_extrude(height=5) | |
import(file = "mount_point_outline.dxf"); | |
} | |
module through_plate() { | |
union() { | |
difference() { | |
plate(); | |
motor(); | |
engine_holes(); | |
} | |
} | |
} | |
module mount_plate() { | |
union() { | |
difference() { | |
plate(); | |
%motor(); | |
engine_holes(); | |
motor_mount_holes(); | |
drive_shaft_cutout(); | |
} | |
} | |
} | |
module motor() { | |
translate([-motor_diameter_with_tolerance / 6, -motor_diameter_with_tolerance / 6]) | |
circle(d = motor_diameter_with_tolerance); | |
} | |
module plate() { | |
module base_plate() { | |
hull() { | |
square([plate_width, plate_height], center = true); | |
translate([-plate_diameter / 5, -plate_diameter / 5]) | |
circle(d = plate_diameter); | |
} | |
} | |
module cutouts() { | |
x_slop = 15; | |
y_slop = 20; | |
translate([plate_width - x_slop, 0 + y_slop]) | |
rotate(10) | |
square([plate_width, plate_height + 100], center=true); | |
translate([plate_width + (x_slop / 2), 0]) | |
rotate(-15) | |
square([plate_width, plate_height + 300], center=true); | |
translate([plate_width + (x_slop / 2), -(y_slop * 3.5)]) | |
rotate(-50) | |
square([plate_width, plate_height + 300], center=true); | |
translate([plate_width + (x_slop / 2), 75]) | |
rotate(45) | |
square([plate_width, plate_height + 300], center=true); | |
translate([-plate_width + (x_slop / 2), 120]) | |
rotate(-30) | |
square([plate_width + (x_slop * 2), plate_height + 300], center=true); | |
} | |
difference() { | |
base_plate(); | |
cutouts(); | |
} | |
} | |
module engine_holes() { | |
translate([-plate_diameter / 2.3, plate_diameter / 2.3]) { | |
circle(d = m8_hole_diameter); | |
translate([108, 0]) | |
circle(d = m8_hole_diameter); | |
translate([127.5, -103]) | |
circle(d = m8_hole_diameter); | |
} | |
} | |
module motor_mount_holes() { | |
translate([-motor_diameter_with_tolerance / 6, -motor_diameter_with_tolerance / 6]) { | |
translate([0, inner_screw_distance / 2]) | |
circle(d = m6_hole_diameter); | |
translate([0, -inner_screw_distance / 2]) | |
circle(d = m6_hole_diameter); | |
translate([-inner_screw_distance / 2, 0]) | |
circle(d = m6_hole_diameter); | |
translate([inner_screw_distance / 2, 0]) | |
circle(d = m6_hole_diameter); | |
} | |
} | |
module drive_shaft_cutout() { | |
translate([-motor_diameter_with_tolerance / 6, -motor_diameter_with_tolerance / 6]) | |
circle(d = drive_shaft_diameter); | |
} |
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