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Simplified code by including the radius of rotation in the section

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profile. Rotation to extrude thread is now always =0.
This commit is contained in:
Adrian Schlatter
2019-04-06 11:58:41 +02:00
parent b368ac6fb2
commit 98bed347e8
1 changed files with 7 additions and 8 deletions
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15
BSPthread.scad
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@@ -29,7 +29,6 @@ in practice!
use <thread_profile.scad> use <thread_profile.scad>
phi = 55;
module BSPP_external_thread(pitch=2.309, turns=3, dpitch=31.68, higbee_arc=45, fn=120) module BSPP_external_thread(pitch=2.309, turns=3, dpitch=31.68, higbee_arc=45, fn=120)
{ {
@@ -41,14 +40,14 @@ module BSPP_external_thread(pitch=2.309, turns=3, dpitch=31.68, higbee_arc=45, f
zvalley = 0.03125 * P; zvalley = 0.03125 * P;
zcrest = 0.13701 * P; zcrest = 0.13701 * P;
section_profile = [[0, -P / 2 + zvalley], [0, +P / 2 - zvalley], section_profile = [[rvalley, -P / 2 + zvalley], [rvalley, +P / 2 - zvalley],
[rcrest - rvalley, +zcrest], [rcrest, +zcrest],
[rcrest - rvalley, -zcrest]]; [rcrest, -zcrest]];
straight_thread( straight_thread(
section_profile=section_profile, section_profile=section_profile,
higbee_arc=higbee_arc, higbee_arc=higbee_arc,
r=rvalley, r=0,
turns=turns, turns=turns,
pitch=pitch, pitch=pitch,
fn=fn); fn=fn);
@@ -64,14 +63,14 @@ module BSPP_internal_thread(pitch=2.309, turns=3, dpitch=31.86, higbee_arc=45, f
zvalley = 0.03125 * P; zvalley = 0.03125 * P;
zcrest = 0.13701 * P; zcrest = 0.13701 * P;
section_profile = [[0, P / 2 - zvalley], [0, -P / 2 + zvalley], section_profile = [[rvalley, P / 2 - zvalley], [rvalley, -P / 2 + zvalley],
[rcrest - rvalley, -zcrest], [rcrest - rvalley, +zcrest]]; [rcrest, -zcrest], [rcrest, +zcrest]];
rotate(180) // rotate by half a turn to fit external thread rotate(180) // rotate by half a turn to fit external thread
straight_thread( straight_thread(
section_profile=section_profile, section_profile=section_profile,
higbee_arc=higbee_arc, higbee_arc=higbee_arc,
r=rvalley, r=0,
turns=turns, turns=turns,
pitch=pitch, pitch=pitch,
fn=fn); fn=fn);