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Working on a 45deg truncation for the gears

pull/20/head
Carlos Garcia 2014-08-18 17:18:34 +02:00
parent 4a2065d5b9
commit bf1838cffb
1 changed files with 71 additions and 78 deletions
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45
Hardware/CYCLONE_2/INHERITED/XYgears/motor_gear.scad
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@ -44,12 +44,18 @@ nholes = 9; // 7
holes_diam = 6; holes_diam = 6;
hole_distance_from_center = 13.5-4.5+holes_diam/2; hole_distance_from_center = 13.5-4.5+holes_diam/2;
// Increase the resolution of default shapes
$fa = 5; // Minimum angle for fragments [degrees]
$fs = 0.5; // Minimum fragment size [mm]
/* Herringbone gear module, adapted from MCAD/involute_gears */ /* Herringbone gear module, adapted from MCAD/involute_gears */
module herringbone_gear( teeth=12, circles=0, shaft=5 ) { module herringbone_gear( teeth=12, circles=0, shaft=5 ) {
twist=200; twist=200;
height=10; height=10;
pressure_angle=30; pressure_angle=30;
module myGear() {
difference() {
gear( gear(
number_of_teeth=teeth, number_of_teeth=teeth,
circular_pitch=320, circular_pitch=320,
@ -62,24 +68,22 @@ module herringbone_gear( teeth=12, circles=0, shaft=5 ) {
hub_diameter=1, hub_diameter=1,
bore_diameter=shaft, bore_diameter=shaft,
circles=circles, circles=circles,
twist=twist/teeth twist=twist/teeth,
$fn=15*2
); );
translate([0,0,-height/2-0.01]) {
difference() {
cylinder(r=40.5/2, h=height/4);
translate([0,0,-0.01])
cylinder(r1=30/2, r2=40.5/2, h=height/4+0.02);
}
}
}
}
myGear();
mirror( [0,0,1] ) mirror( [0,0,1] )
gear( myGear();
number_of_teeth=teeth,
circular_pitch=320,
pressure_angle=pressure_angle,
clearance = 0.2,
gear_thickness = height/2,
rim_thickness = height/2,
rim_width = 1,
hub_thickness = height/2,
hub_diameter=1,
bore_diameter=shaft,
circles=circles,
twist=twist/teeth
);
} }
module cyclone_motor_gear(with_extra_parts=false, exploded=false) { module cyclone_motor_gear(with_extra_parts=false, exploded=false) {
@ -119,17 +123,6 @@ union() difference() {
//shaft hole //shaft hole
translate( [0, 0, -6] ) cylinder( r=motor_shaft_diameter/2, h=20, $fn=30 ); translate( [0, 0, -6] ) cylinder( r=motor_shaft_diameter/2, h=20, $fn=30 );
} }
if(with_extra_parts)
cyclone_motor_gear_extras(exploded_distance=(exploded?20:0));
module cyclone_motor_gear_extras(exploded_distance=0) {
echo("Non-Plastic Parts, 1, Grub Screw M3 x 8 mm to attach gear to motor shaft");
translate([0,2.5+8+exploded_distance,12-3.5])
rotate([90, 0, 0])
color(Steel) cylinder(r=1.5, h=8, $fn=30);
}
} }