author | Michael Krelin <hacker@klever.net> | 2016-07-15 19:28:33 (UTC) |
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committer | Michael Krelin <hacker@klever.net> | 2016-07-15 19:28:33 (UTC) |
commit | 26a3d6cd592ac97040f3c8355fdfb3236291bfc4 (patch) (unidiff) | |
tree | d167422cf554f228d68bc8b7514e0e2fe230a942 /x-carriage.scad | |
parent | f050aa95edf9b857580d6caf190060a00d37bff9 (diff) | |
download | carriagery-26a3d6cd592ac97040f3c8355fdfb3236291bfc4.zip carriagery-26a3d6cd592ac97040f3c8355fdfb3236291bfc4.tar.gz carriagery-26a3d6cd592ac97040f3c8355fdfb3236291bfc4.tar.bz2 |
increased fit tolerance
-rw-r--r-- | x-carriage.scad | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/x-carriage.scad b/x-carriage.scad index b2d0772..48fcec8 100644 --- a/x-carriage.scad +++ b/x-carriage.scad | |||
@@ -1,51 +1,51 @@ | |||
1 | slide_tolerance = .3; | 1 | slide_tolerance = .3; |
2 | play_tolerance=.4; | 2 | play_tolerance=.4; |
3 | fit_tolerance = .2; | 3 | fit_tolerance = .25; |
4 | 4 | ||
5 | bearings_l = 30;// LM8UU: 25 | 5 | bearings_l = 30;// LM8UU: 25 |
6 | bearings_d = 12;// LM8UU: 15 | 6 | bearings_d = 12;// LM8UU: 15 |
7 | bearings_m = 2.5;// thickness of the bearing end holder | 7 | bearings_m = 2.5;// thickness of the bearing end holder |
8 | bearings_s = 2.5;// the minimum shell between bearings and carriage front | 8 | bearings_s = 2.5;// the minimum shell between bearings and carriage front |
9 | 9 | ||
10 | rods_apart = 45; | 10 | rods_apart = 45; |
11 | rod_d = 8; | 11 | rod_d = 8; |
12 | 12 | ||
13 | mounting_holes_from_top = [// the offsets of mounting holes on the back | 13 | mounting_holes_from_top = [// the offsets of mounting holes on the back |
14 | [0, 20], [-4.5,10], [4.5,10] | 14 | [0, 20], [-4.5,10], [4.5,10] |
15 | ]; | 15 | ]; |
16 | mounting_holes_apart = mounting_holes_from_top[2][0]-mounting_holes_from_top[1][0]; | 16 | mounting_holes_apart = mounting_holes_from_top[2][0]-mounting_holes_from_top[1][0]; |
17 | 17 | ||
18 | belt_tooth=0.70; | 18 | belt_tooth=0.70; |
19 | belt_thickness=0.75; | 19 | belt_thickness=0.75; |
20 | belts_thickness = belt_thickness*2+belt_tooth+0.5; | 20 | belts_thickness = belt_thickness*2+belt_tooth+0.5; |
21 | belt_width = 6 + slide_tolerance; | 21 | belt_width = 6 + slide_tolerance; |
22 | belts_apart = 12; | 22 | belts_apart = 12; |
23 | belt_pitch = 2; | 23 | belt_pitch = 2; |
24 | 24 | ||
25 | tiehole_id = bearings_d+3; | 25 | tiehole_id = bearings_d+3; |
26 | tiehole_od = bearings_d+10; | 26 | tiehole_od = bearings_d+10; |
27 | tiehole_w = 4; | 27 | tiehole_w = 4; |
28 | 28 | ||
29 | screw_d = 3; | 29 | screw_d = 3; |
30 | screwhead_d = 5.5; | 30 | screwhead_d = 5.5; |
31 | screwhead_h = 3; | 31 | screwhead_h = 3; |
32 | 32 | ||
33 | module belt(pitch=belt_pitch,width=belt_width,thickness=belt_thickness,tooth=belt_tooth,l=100,tolerance=0) { | 33 | module belt(pitch=belt_pitch,width=belt_width,thickness=belt_thickness,tooth=belt_tooth,l=100,tolerance=0) { |
34 | translate([-l/2,-width/2,-thickness]) | 34 | translate([-l/2,-width/2,-thickness]) |
35 | intersection() { | 35 | intersection() { |
36 | union() { | 36 | union() { |
37 | cube(size=[l,width,thickness+tolerance]); | 37 | cube(size=[l,width,thickness+tolerance]); |
38 | for(x=[0:pitch:l/2]) for(s=[-1,1]) | 38 | for(x=[0:pitch:l/2]) for(s=[-1,1]) |
39 | translate([l/2+s*x,0,thickness]) | 39 | translate([l/2+s*x,0,thickness]) |
40 | rotate([-90,0,0]) | 40 | rotate([-90,0,0]) |
41 | cylinder(r=tooth+tolerance,h=width,$fn=6); | 41 | cylinder(r=tooth+tolerance,h=width,$fn=6); |
42 | } | 42 | } |
43 | translate([0,-1,0]) | 43 | translate([0,-1,0]) |
44 | cube(size=[l,width+2,thickness+tooth+1]); | 44 | cube(size=[l,width+2,thickness+tooth+1]); |
45 | } | 45 | } |
46 | } | 46 | } |
47 | 47 | ||
48 | module xcarriage() { | 48 | module xcarriage() { |
49 | cw = bearings_l+2*bearings_m;// carriage width | 49 | cw = bearings_l+2*bearings_m;// carriage width |
50 | % for(mz=[0,1]) mirror([0,0,mz]) translate([0,0,-belts_apart/2]) belt(); | 50 | % for(mz=[0,1]) mirror([0,0,mz]) translate([0,0,-belts_apart/2]) belt(); |
51 | difference() { | 51 | difference() { |