post_shorter = 1;
-screw_dia = 2.2;
+$screw_dia = 3.2;
screw_big_dia = 3.6;
screw_big_len = 4.0;
demo_slop = 0.1;
+leg_height = 53.75 - 0.95;
+
+leg_hole_dia = 5 + 0.75;
+leg_big_dia = 37;
+leg_bot_dia = 15;
+leg_top_flat_z = 2;
+leg_top_thick = 8;
+
+leg_midspc_dia = 20;
+leg_bot_thick = 8;
+leg_bot_mid_dia = 12;
+
+leg_fin_top_w = 3;
+leg_fin_bot_w = 5;
+leg_fin_bot_rad = 30;
+leg_fin_bot_flat_z = 5;
+
+leg_n_fins = 4;
+leg_n_tubules = 4;
+leg_tubule_dia = 4;
+
+// spacer
+
+spacer_ext_slop = 0.25;
+spacer_int_slop = 0.25;
+spacer_height = 10;
+
// cutout
machine_rear_to_front = 84 + 0.25 - 1.4;
thehd_bl = -thehd_tr;
thehd_br = -thehd_tl;
-tablet_z_slop = 0.25;
+tablet_z_slop = 1.00;
interlock_rad = interlock_dia/2;
interlock_negative_rad = interlock_rad + 0.125;
interlock_sq_adj = 0.2; // arbitrary
+leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) -
+ pow(leg_fin_top_w/2,2) );
+
+leg_tubule_pos_rad = leg_big_dia/2 * 0.6;
+
m4_define(`POST_TCROSSSZ',
`2*( tile_hard_edge_hole_dist - test_edge + 1 )')
cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
translate([0,0, tile_th]) {
cylinder(r= screw_big_dia/2, h= screw_big_len);
- cylinder(r= screw_dia/2, h= ply_th, $fn=20);
+ cylinder(r= $screw_dia/2, h= ply_th, $fn=20);
}
}
}
MachineEnvelope();
cube(shufflesz, center=true);
}
+ if (JIG) {
+ translate([0,0,-20]) linear_extrude(height=20) {
+ for (diag=[[ +1, botleft ],
+ [ -1, [topright[0], botleft[1]] ]]) {
+ translate(diag[1])
+ rotate(atan2(size[1], diag[0] * size[0]))
+ translate([0, -test_edge/2])
+ square([vectorlen2d(size), test_edge]);
+ }
+ }
+ }
}
}
}
TestPiece2();
}
+module PostTestPiece(){ ////toplevel
+ hole_sizes = [2.8, 3.0, 3.1, 3.134, 3.168, 3.2, 3.3, 3.5];
+ nholes = len(hole_sizes)*2;
+ nrows = 4;
+ stride = post_dia*1.5;
+ rect_sz = stride * [ nrows,
+ ceil(nholes/nrows) ];
+ corners = Rectangle_corners(-stride * 0.5 * [1,1], rect_sz);
+ difference(){
+ union(){
+ TileBase(corners[0], corners[2]);
+ RoundEdge(corners[0], corners[1]);
+ for (i= [ 0: nholes-1 ]) {
+ $screw_dia = hole_sizes[ floor(i/2) ];
+ translate(stride * [ (nrows-1) - (i % nrows),
+ floor(i / nrows),
+ 0
+ ]) {
+ Posts([[0,0]]);
+ color("blue")
+ mirror([0,0,1])
+ translate([post_dia/2, -post_dia/2, 1])
+ cube([1, post_dia * (i / nholes), tile_th]);
+ }
+ }
+ }
+ }
+}
+
module Machine_NewRearProfile(){
// figures copied out of xfig edit boxes
// best not to edit the posbox size if poss - just move it
TestStrapPeg_any(60);
}
+module PostSpacer(){ ////toplevel
+ $fn = 50;
+ difference(){
+ cylinder(r= ply_hole_dia_real/2 - spacer_ext_slop,
+ h= spacer_height);
+ translate([0,0,-1])
+ cylinder(r= post_dia/2 + spacer_int_slop,
+ h= ply_th + 2);
+ }
+}
+
module Machine(){ ////toplevel
Machine_NewArm();
Machine_Curves();
}
}
+module Leg(){ ////toplevel
+ difference(){
+ union(){
+ hull(){
+ mirror([0,0,1])
+ cylinder(r= leg_big_dia/2, h=leg_top_flat_z, $fn=100);
+ translate([0,0, -leg_top_thick])
+ cylinder(r= leg_bot_dia/2, height=1, $fn=100);
+ }
+ if (!TEST)
+ translate([0,0,-leg_height])
+ cylinder(r= leg_bot_mid_dia/2, h=leg_bot_thick);
+ for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
+ hull(){
+ mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
+ cube([ leg_fin_top_rad - 0.1,
+ leg_fin_top_w,
+ 1 ])
+ ;
+ translate([0, -leg_fin_bot_w/2, -leg_height])
+ cube([ leg_fin_bot_rad,
+ leg_fin_bot_w,
+ leg_fin_bot_flat_z ]);
+ }
+ }
+ }
+ mirror([0,0,1]) translate([0,0,-1])
+ cylinder(r= leg_hole_dia/2,
+ h= (!TEST ? leg_height+2 : leg_height/2),
+ $fn=30);
+ mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1])
+ hull(){
+ cylinder(r= (!TEST ? leg_midspc_dia/2 : 0.1),
+ h= leg_height - leg_top_thick - leg_bot_thick + 0.2,
+ $fn=30);
+ if (TEST)
+ cylinder(r= leg_midspc_dia/2,
+ h= leg_height - leg_top_thick - leg_bot_thick
+ + (!TEST ? 0.2 : -leg_midspc_dia/2),
+ $fn=30);
+ }
+ cid_shear = (leg_fin_bot_w - leg_fin_top_w)/2 /
+ (leg_height -leg_fin_bot_flat_z);
+ multmatrix([[ 1, 0, 0, leg_midspc_dia/2 ],
+ [ 0, cid_shear,
+ 1, -leg_fin_bot_w/2 ],
+ [ 0, 1, 0, -leg_height + leg_fin_bot_flat_z ],
+ [ 0, 0, 0, 1 ]])
+ Commitid_BestCount([ leg_big_dia/2 - leg_midspc_dia/2,
+ leg_height - leg_fin_bot_flat_z
+ - leg_top_thick ]);
+ if (!TEST)
+ for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
+ mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])
+ cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20);
+ }
+ }
+}
+
function Rectangle_corners(c0, sz) =
// returns the corners of a rectangle from c0 to c0+sz
// if sz is positive, the corners are anticlockwise starting with c0
rcy = cty + frontcurve_avoid_y;
posts = [ cnr_posts[0],
cnr_posts[1],
+ 0.5 * (cnr_posts[0] + cnr_posts[1]),
cnr_posts[2] + [ 0, -rcy ],
cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
cnr_posts[3] + [ 0, -cty ]
translate(demo_slop*[-3,1]) color("blue") Tile10();
translate(demo_slop*[-3,0]) color("red") Tile00();
%Machine();
+ // Can also do this, to print reference sheet:
+ // load this into openscad
+ // select Ctrl-4 view, view all, scale appropriately
+ // import sewing-table,Demo-flat.png
+ // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
+ // lpr t.pnm
}
//TestPiece1();
~ianmdlvl / reprap-play.git / blobdiff