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@@ -19,105 +19,126 @@ module the_mixer( |
19 | pushfit_type = "threaded", // threaded|embedded|embeddest |
19 | pushfit_type = "threaded", // threaded|embedded|embeddest |
20 | pushfit_ring_h = 4.7, // height of embedded pushfit ring |
20 | pushfit_ring_h = 4.7, // height of embedded pushfit ring |
21 | pushfit_insert_d = 8, // diameter of pushfit insert legs hole |
21 | pushfit_insert_d = 8, // diameter of pushfit insert legs hole |
22 | pushfit_legspace_h = 3.2, // the height of legspace for embeddest variant |
22 | pushfit_legspace_h = 3.2, // the height of legspace for embeddest variant |
23 | pushfit_inlet_ch = 1, // inlet chamfer |
23 | pushfit_inlet_ch = 1, // inlet chamfer |
24 | liner_d = 4, liner_id = 2, // ptfe liner inner and outer diameters |
24 | liner_d = 4, liner_id = 2, // ptfe liner inner and outer diameters |
25 | filament_d = 1.75, |
25 | filament_d = 1.75, |
26 | join_angle = 30, |
26 | join_angle = 30, |
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27 | joint = "wide", // wide|narrow |
27 | |
28 | |
28 | interpushfit = 2*extrusion_width, // space between two pushfit holes |
29 | interpushfit = 2*extrusion_width, // space between two pushfit holes |
29 | pushfit_s = 2, // shell around pushfit holes |
30 | pushfit_s = 2, // shell around pushfit holes |
30 | output_l = 4, // length of output after before pushfit |
31 | output_l = 4, // length of output liner after before pushfit |
31 | outer_r = 3, // outer radius |
32 | outer_r = 3, // outer radius |
32 | |
33 | |
33 | liner_d_tolerance = .2, |
34 | liner_d_tolerance = .2, |
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35 | filament_d_tolerance = .25 |
34 | ) { |
36 | ) { |
35 | fnd = PI*2*2; fnr = fnd*2; |
37 | fnd = PI*2*2; fnr = fnd*2; |
36 | module liner(l,in) { |
38 | |
37 | inh=ld-liner_id; |
39 | ld = liner_d+liner_d_tolerance; |
38 | union() { |
40 | fd = filament_d+filament_d_tolerance; |
39 | translate([0,0,inh]) |
41 | linero = ld/2/tan(join_angle/2); // liner offset |
40 | cylinder(d=ld,h=l-inh,$fn=ld*fnd); |
42 | |
41 | translate([0,0,-epsilon]) |
43 | jd = (joint=="narrow") ? fd : ld; // joint diameter |
42 | cylinder(d1=ld+epsilon,d2=liner_id-epsilon,h=inh+2*epsilon,$fn=ld*fnd); |
44 | jo = (joint=="narrow") ? jd/2/tan(join_angle/2) : linero; // joint offset |
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45 | |
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46 | pfrx = interpushfit/2/cos(join_angle/2); // radial margin |
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47 | pfR = pushfit_d/2+pfrx; // radius of pushfit with margin |
| |
48 | // offset of pushfit offset |
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49 | pfoo = (pushfit_type=="threaded") ? 0 : |
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50 | (pushfit_type=="embedded") ? (pushfit_h-pushfit_ring_h) : |
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51 | (pushfit_type=="embeddest") ? 0 : undef; |
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52 | pfo = pfR/tan(join_angle/2)-pfoo; // pushfit thread ofset |
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53 | |
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54 | h = pushfit_d+pushfit_s*2; |
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55 | |
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56 | module liner(l,in,offset=0,linero) { |
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57 | lo = linero==undef ? l/2 : linero; |
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58 | translate([0,0,offset]) |
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59 | if(joint=="narrow") { |
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60 | $fn = max(fd,ld,jd)*fnd; |
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61 | cylinder(d=fd,h=l); |
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62 | //if(in=="top") cylinder(d1=jd,d2=fd,h=(jd-fd)/2); |
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63 | translate([0,0,lo]) |
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64 | cylinder(d=ld,h=l-lo); |
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65 | if(in=="bottom") translate([0,0,lo+epsilon]) mirror([0,0,1]) |
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66 | cylinder(d1=(liner_id+ld)/2,d2=fd,h=(liner_id+ld-fd)/2); |
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67 | }else{ |
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68 | inh=ld-liner_id; |
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69 | union() { |
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70 | translate([0,0,inh]) |
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71 | cylinder(d=ld,h=l-inh,$fn=ld*fnd); |
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72 | translate([0,0,-epsilon]) |
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73 | cylinder(d1=ld+epsilon,d2=liner_id-epsilon,h=inh+2*epsilon,$fn=ld*fnd); |
| |
74 | } |
43 | } |
75 | } |
44 | } |
76 | } |
45 | module pushfit() { |
77 | module pushfit() { |
46 | if(pushfit_type=="threaded") { |
78 | if(pushfit_type=="threaded") { |
47 | pushfit_thread(h=pushfit_h); |
79 | pushfit_thread(h=pushfit_h); |
48 | }else if(pushfit_type=="embedded") { |
80 | }else if(pushfit_type=="embedded") { |
49 | translate([0,0,pushfit_h-pushfit_ring_h]) |
81 | translate([0,0,pushfit_h-pushfit_ring_h]) |
50 | cylinder(d=pushfit_d,h=pushfit_ring_h,$fn=fnd); |
82 | cylinder(d=pushfit_d,h=pushfit_ring_h,$fn=fnd); |
51 | cylinder(d=pushfit_insert_d,h=pushfit_h,$fn=pushfit_insert_d*fnd); |
83 | cylinder(d=pushfit_insert_d,h=pushfit_h,$fn=pushfit_insert_d*fnd); |
52 | }else if(pushfit_type=="embeddest") { |
84 | }else if(pushfit_type=="embeddest") { |
53 | cylinder(d=pushfit_id,h=pushfit_h+1,$fn=pushfit_insert_d*fnd); |
85 | cylinder(d=pushfit_id,h=pushfit_h+1,$fn=pushfit_insert_d*fnd); |
54 | cylinder(d=pushfit_d,h=pushfit_legspace_h,$fn=pushfit_d*fnd); |
86 | cylinder(d=pushfit_d,h=pushfit_legspace_h,$fn=pushfit_d*fnd); |
55 | dd = pushfit_d-pushfit_id; |
87 | dd = (pushfit_d-pushfit_id)/2; |
56 | translate([0,0,pushfit_legspace_h-epsilon]) |
88 | translate([0,0,pushfit_legspace_h-epsilon]) |
57 | cylinder(d1=pushfit_d,d2=pushfit_id-2*epsilon,h=dd+epsilon,$fn=pushfit_d*fnd); |
89 | cylinder(d1=pushfit_d,d2=pushfit_id-2*epsilon,h=dd+epsilon,$fn=pushfit_d*fnd); |
58 | translate([0,0,pushfit_h-pushfit_inlet_ch-epsilon]) |
90 | translate([0,0,pushfit_h-pushfit_inlet_ch-epsilon]) |
59 | cylinder(d1=pushfit_id-2*epsilon,d2=pushfit_id+2*pushfit_inlet_ch+2,h=pushfit_inlet_ch+epsilon+1,$fn=(pushfit_id+2*pushfit_inlet_ch+2)*fnd); |
91 | cylinder(d1=pushfit_id-2*epsilon,d2=pushfit_id+2*pushfit_inlet_ch+2,h=pushfit_inlet_ch+epsilon+1,$fn=(pushfit_id+2*pushfit_inlet_ch+2)*fnd); |
60 | } |
92 | } |
61 | } |
93 | } |
62 | |
94 | |
63 | ld = liner_d+liner_d_tolerance; |
| |
64 | linero = ld/2/tan(join_angle/2); // liner offset |
| |
65 | pfrx = interpushfit/2/cos(join_angle/2); // radial margin |
| |
66 | pfR = pushfit_d/2+pfrx; // radius of pushfit with margin |
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67 | // offset of pushfit offset |
| |
68 | pfoo = (pushfit_type=="threaded") ? 0 : |
| |
69 | (pushfit_type=="embedded") ? (pushfit_h-pushfit_ring_h) : |
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70 | (pushfit_type=="embeddest") ? 0 : undef; |
| |
71 | pfo = pfR/tan(join_angle/2)-pfoo; // pushfit thread ofset |
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72 | |
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73 | h = pushfit_d+pushfit_s*2; |
| |
74 | difference() { |
95 | difference() { |
75 | hull() { |
96 | hull() { |
76 | for(s=[-1,1]) { |
97 | for(s=[-1,1]) { |
77 | rotate([0,0,s*join_angle/2]) |
98 | rotate([0,0,s*join_angle/2]) |
78 | for(ss=[-1,1]) |
99 | for(ss=[-1,1]) |
79 | translate([ss*pushfit_d/2,pfo+pushfit_h-outer_r-epsilon]) |
100 | translate([ss*pushfit_d/2,pfo+pushfit_h-outer_r-epsilon]) |
80 | cylinder(r=outer_r,h=h,center=true,$fn=outer_r*fnr); |
101 | cylinder(r=outer_r,h=h,center=true,$fn=outer_r*fnr); |
81 | translate([s*pushfit_d/2,-output_l-pushfit_h+outer_r+epsilon,0]) |
102 | translate([s*pushfit_d/2,-output_l-pushfit_h+outer_r+epsilon,0]) |
82 | cylinder(r=outer_r,h=h,center=true,$fn=outer_r*fnr); |
103 | cylinder(r=outer_r,h=h,center=true,$fn=outer_r*fnr); |
83 | } |
104 | } |
84 | } |
105 | } |
85 | for(s=[-1,1]) rotate([0,0,s*join_angle/2]) { |
106 | for(s=[-1,1]) rotate([0,0,s*join_angle/2]) { |
86 | translate([0,linero,0]) rotate([-90,0,0]) |
107 | rotate([-90,0,0]) |
87 | liner(l=pfo-linero+epsilon,in="bottom"); |
108 | liner(l=pfo-jo+epsilon,in="bottom",offset=jo); |
88 | //cylinder(d=ld,h=pfo-linero+1,$fn=ld*fnd); |
| |
89 | translate([0,pfo,0]) rotate([-90,0,0]) |
109 | translate([0,pfo,0]) rotate([-90,0,0]) |
90 | pushfit(); |
110 | pushfit(); |
91 | } |
111 | } |
92 | rotate([90,0,0]) { |
112 | rotate([90,0,0]) { |
93 | liner(l=output_l+epsilon,in="top"); |
113 | liner(l=output_l+epsilon,in="top",linero=0); |
94 | //cylinder(d=ld,h=output_l+1,$fn=ld*fnd); |
114 | //cylinder(d=ld,h=output_l+1,$fn=ld*fnd); |
95 | translate([0,0,output_l]) |
115 | translate([0,0,output_l]) |
96 | pushfit(); |
116 | pushfit(); |
97 | } |
117 | } |
98 | hull() { |
118 | hull() { |
99 | for(s=[-1,1]) rotate([0,0,s*join_angle/2]) { |
119 | for(s=[-1,1]) rotate([0,0,s*join_angle/2]) { |
100 | rotate([-90,0,0]) |
120 | rotate([-90,0,0]) |
101 | translate([0,0,linero]) |
121 | translate([0,0,jo]) |
102 | cylinder(d=ld,h=epsilon,$fn=ld*fnd); |
122 | cylinder(d=jd,h=epsilon,$fn=jd*fnd); |
103 | } |
123 | } |
104 | rotate([90,0,0]) |
124 | rotate([90,0,0]) |
105 | cylinder(d=ld,h=epsilon,$fn=ld*fnd); |
125 | cylinder(d=jd,h=epsilon,$fn=jd*fnd); |
106 | } |
126 | } |
107 | } |
127 | } |
108 | } |
128 | } |
109 | |
129 | |
110 | module this() { |
130 | module this() { |
111 | the_mixer( |
131 | the_mixer( |
112 | pushfit_type="embeddest", |
132 | pushfit_type="embeddest", |
113 | pushfit_d = 8, |
133 | pushfit_d = 8, |
114 | pushfit_h = 7, |
134 | pushfit_h = 7, |
115 | interpushfit = extrusion_width |
135 | interpushfit = extrusion_width, |
| |
136 | joint = "narrow" |
116 | ); |
137 | ); |
117 | } |
138 | } |
118 | |
139 | |
119 | if(!false) { |
140 | if(!false) { |
120 | difference() { |
141 | difference() { |
121 | this(); |
142 | this(); |
122 | cylinder(d=100,h=100); |
143 | cylinder(d=100,h=100); |
123 | } |
144 | } |
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