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Added crimp version of ring terminal.

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This commit is contained in:
Chris Palmer 2019-10-22 16:12:58 +01:00
parent 1c221ad612
commit 1944039f22
4 changed files with 84 additions and 35 deletions
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tests/png/ring_terminals.png
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2
tests/ring_terminals.scad
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@ -24,7 +24,7 @@ include <../vitamins/ring_terminals.scad>
module ring_terminals()
layout([for(t = ring_terminals) ringterm_od(t)], 5)
rotate(90)
rotate(180)
ring_terminal_assembly(ring_terminals[$i], 3);
if($preview)

60
vitamins/ring_terminal.scad
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@ -33,26 +33,73 @@ function ringterm_width(type) = type[4]; //! Width of the tail
function ringterm_hole(type) = type[5]; //! Wire hole diameter
function ringterm_thickness(type) = type[6]; //! Metal thickness
function ringterm_screw(type) = type[7]; //! Screw type
function ringterm_crimp_length(type) = type[8]; //! If non-zero the length of the crimp tube
function ringterm_extent(type) = ringterm_length(type) / sqrt(2); //! Space to leave
module ring_terminal(type) { //! Draw specifeid ring terminal
screw = ringterm_screw(type);
d = 2 * screw_radius(screw);
vitamin(str("ring_terminal(", type[0], "): Ring terminal ",d,"mm"));
crimp = ringterm_crimp_length(type);
vitamin(str("ring_terminal(", type[0], "): Ring terminal ", crimp ? "crimp " : "", d, "mm"));
t = ringterm_thickness(type);
w = ringterm_width(type);
od = ringterm_od(type);
id = ringterm_id(type);
l = ringterm_length(type);
angle = 45;
bend = washer_radius(screw_washer(screw)) + t * tan(angle / 2);
angle = crimp ? 0 : 45;
transition = 1;
bend = crimp ? l - od / 2 - crimp - transition : washer_radius(screw_washer(screw)) + t * tan(angle / 2);
hole_d = ringterm_hole(type);
module hull_if_crimp()
if(crimp)
hull()
children();
else
children();
color("silver") union() {
tube(or = od / 2, ir = id / 2, h = t, center = false);
linear_extrude(height = t)
difference() {
hull_if_crimp() {
circle(d = od);
translate([-w / 2, -bend, 0])
cube([w, bend - id / 2, t]);
square([w, bend - id / 2]);
}
circle(d = id);
}
if(crimp) {
translate([0, -bend, w / 2])
rotate([90, 0, 0]) {
render() difference() {
union() {
translate_z(transition)
cylinder(d = w, h = crimp);
hull() {
translate_z(transition)
cylinder(d = w, h = eps);
translate([-w / 2, -w / 2])
cube([w, t, eps]);
}
}
hull() {
translate_z(-eps)
cylinder(d = w - 2 * t, h = crimp + transition + 2 * eps);
translate([-w / 2 + t, -w / 2 + t])
cube([w - 2 * t, w / 2 - t, eps]);
}
translate([0, w / 2])
cube([0.1, w, 100], center = true);
}
}
}
else
translate([0, -bend])
rotate([-angle, 0, 0])
linear_extrude(height = t)
@ -65,8 +112,9 @@ module ring_terminal(type) { //! Draw specifeid ring terminal
translate([0, -length + w / 2])
circle(d = w);
}
if(hole_d)
translate([0, -length + w / 2])
circle(d = ringterm_hole(type));
circle(d = hole_d);
}
}
translate_z(ringterm_thickness(type))

17
vitamins/ring_terminals.scad
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@ -20,16 +20,17 @@
//
// Ring terminals
//
// o i l w h t s
// d d e i o h c
// n d l i r
// g t e c e
// t h k w
// o i l w h t s c
// d d e i o h c r
// n d l i r i
// g t e c e m
// t h k w p
// h
//
M3_ringterm = ["M3_ringterm", 6, 3, 12, 3, 1.5, 0.2, M3_dome_screw];
M3_ringterm_cs = ["M3_ringterm_cs", 6, 3, 12, 3, 1.5, 0.2, M3_cap_screw];
M3_ringterm = ["M3_ringterm", 6, 3, 12, 3, 1.5, 0.2, M3_dome_screw, 0];
M3_ringterm_cs = ["M3_ringterm_cs", 6, 3, 12, 3, 1.5, 0.2, M3_cap_screw, 0];
M3_ringterm_crimp = ["M3_ringterm_crimp", 5.5, 3, 13, 4.1, 0, 0.7, M3_dome_screw, 4.5];
ring_terminals = [M3_ringterm, M3_ringterm_cs];
ring_terminals = [M3_ringterm, M3_ringterm_cs, M3_ringterm_crimp];
use <ring_terminal.scad>