X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=flyscreen-handle.scad;h=c7f057f92bd222558b966f49e95157daeff3b291;hp=84edd65f62aaaf2bdf99439327de12b99ecd2654;hb=6fd7e47aa3f3709503b8cda8c8e767d3309b5ac8;hpb=72a608b8591d8a5efaa90ffe59f13e0f33547ea7 diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad index 84edd65..c7f057f 100644 --- a/flyscreen-handle.scad +++ b/flyscreen-handle.scad @@ -1,188 +1,149 @@ // -*- C -*- -opening_height = 7.84 - 0.3 + 0.60; -opening_depth = 6.0; // 7.88; -openingcnr_dia = 2.75; -opening_topprotr = 1.54; +opening_height = 7.84; +opening_depth = 7.88; +openingedge_dia = 1.34; +opening_protrh = 1.8; -gap = 0.25; +pivot_x = 6; +inside_len = 4; -retain_rad = 1.65; -retain_protr = 0.35; -retain_hgap_adjust = 1.5; +pivoting_gap = 0.1; -retain_stalk_len = 8.0; -retain_stalk_h = 1.5; -retain_bend_gap = 2.0; -retain_empir_angle = -25; +outside_gap = 3; +outside_len = 16; +outend_height = 3; -hgap_empir_adjust = -0.5 -2.50; +outside_pushh = 4; +outside_pushslope = 1.4; +outside_push_inadj = 0.82; -topprotr_rad = 0.35; +ourcirc_r = 0.5 / 2; -bot_overlap = 5; -bot_w = 3; +opening_protr_slop = 0.1; -handle_w = 8; -handle_rh = 3; -handle_rcut = 3; +intooth_top_slop = 0.1; +inside_h_xgap = 1; -cutout_gap = 1.5; +pivot_r = 2; +pivot_slop = 0.25; -total_len = 35; -retaining_len = 10; -overret_gaplen = 5; - -overret_hch = 5; +width = 5; // calculated -ins_irad = openingcnr_dia/2 + gap; -ins_orad = openingcnr_dia/2 + opening_height - gap; -ins_th = ins_orad - ins_irad; +inside_h = opening_height/2 - opening_protrh - inside_h_xgap/2; -handle_x0 = ins_irad + hgap_empir_adjust; -handle_h = bot_overlap + ins_th; -handle_y0 = -ins_orad-bot_overlap; -handle_y1 = handle_y0 + handle_h; +edge_or = openingedge_dia/2 + opening_protr_slop; -handle_x1 = handle_x0 + bot_w + handle_w; +Q0 = [ openingedge_dia/2, + openingedge_dia/2 + opening_height/2 ]; -topprotr_y = -ins_irad + opening_topprotr; +p4p5d = [edge_or + ourcirc_r, 0]; -retain_mxy = [handle_x0 - retain_rad - retain_hgap_adjust, - -ins_orad + retain_rad - retain_protr]; +P0 = [ pivot_x, pivoting_gap ]; +P4 = Q0 - p4p5d; +P3t = [ P4[0], Q0[1] - openingedge_dia/2 + opening_protrh + - intooth_top_slop - ourcirc_r ]; +P2 = P4 + [ -(inside_len - ourcirc_r*2), 0 ]; +P1 = [ P2[0], P3t[1] - (inside_h + ourcirc_r*2) ]; +P9 = [ outside_len - ourcirc_r, outside_gap/2 + ourcirc_r ]; +P8 = P9 + [ 0, outend_height - ourcirc_r*2 ]; +P5 = Q0 + p4p5d; -module InsertSection(){ - hull(){ - translate([-ins_irad, -ins_irad]) - mirror([1,0]) - square([opening_depth - ins_irad, 0.1]); - translate([-ins_irad - topprotr_rad, - topprotr_y - topprotr_rad]) - circle(r=topprotr_rad, $fn=10); - } - translate([0, -ins_orad]) square([ins_irad+1, ins_th]); - intersection(){ - translate([0.1, -ins_irad + 0.1]) - mirror([1,1]) - square([100, opening_depth]); - difference(){ - circle(r= ins_orad); - circle(r= ins_irad, $fn=20); - } - } -} +P6t = P5 + [ 0, outside_pushh - ourcirc_r*2 ]; +P7 = [ P6t[0] + (P6t[1] - P1[1]) / outside_pushslope, + P1[1] ]; -module HandleSection(){ - difference(){ - hull(){ - translate([handle_x0, handle_y0]) - square([bot_w, handle_h]); - for (y= [handle_y1 - handle_rh/2, - handle_y1 - ins_th + handle_rh/2]) { - translate([handle_x1 - handle_rh/2, y]) - circle(r= handle_rh/2, $fn=20); - } - } - hull(){ - for (x= [handle_x0 + bot_w + handle_rcut/2, - handle_x1 - handle_rh/2 - handle_rcut/2]) { - translate([x, handle_y1]) - circle(r = handle_rcut/2, $fn=20); +P3a = P3t + [ -outside_push_inadj, 0 ]; +P6a = P6t + [ -outside_push_inadj, 0 ]; + +outside_push_inadj_slope = (P3t[1]-P4[1]) / (P6a[1]-P5[1]); + +module ExtrusionSect(){ + cr = openingedge_dia/2; + toph = opening_height/2 + opening_protrh; + + for (my=[0,1]) { + mirror([0,my]) { + translate(Q0) { + hull(){ + circle(r=cr, $fn=20); + translate([-cr,10]) square([cr*2, 1]); + } } } } - hull(){ - for (y= [handle_y1 - handle_rh/2, - handle_y1 - 3*handle_rh/2]) - translate([handle_x1 - handle_rh/2, y]) - circle(r = handle_rh/2, $fn=20); + translate([-opening_depth, -toph]) { + difference(){ + translate([-5,-5]) + square([opening_depth+6, toph*2+10]); + square([opening_depth+2, toph*2]); + } } } -module RetainSection(){ - translate(retain_mxy) { - rotate(retain_empir_angle) { - circle(r=retain_rad, $fn=20); - square([retain_stalk_len + 1, retain_stalk_h]); +module PsHull(ps) { + hull(){ + for (p = ps) { + translate(p) + circle(r = ourcirc_r, $fn=10); } } } -module RetainCutout(gapping=false){ - translate(retain_mxy) { - rotate(retain_empir_angle) { - translate([-50, -retain_rad]) { - square([50 + retain_stalk_len, - retain_rad * 2 + retain_bend_gap]); +module LeverSect(inadj=false){ + P3 = inadj ? P3a : P3t; + diag = inadj ? 0 : atan(outside_push_inadj_slope); + PsHull([P2,P3,P4]); + difference(){ + PsHull([P0,P1,P2,P5,P8,P9]); + translate(Q0) { + rotate(diag){ + hull(){ + circle(r=edge_or, $fn=20); + translate([0,10]) circle(r=edge_or, $fn=20); + } } } } -} +} -module GappingSection(){ +module LeverSectTop(){ difference(){ - InsertSection(); - RetainCutout(true); + LeverSect(false); + translate([pivot_x,0]) circle(r= pivot_r + pivot_slop, $fn=20); } - HandleSection(); } -module WithRetainSection(){ - difference(){ - union(){ - InsertSection(); - HandleSection(); - } - RetainCutout(); +module LeverSectBot(inadj=false){ + P6 = inadj ? P6a : P6t; + mirror([0,1]) { + LeverSect(inadj); + PsHull([P5,P6,P7]); + translate([pivot_x,0]) circle(r=pivot_r, $fn=20); } - RetainSection(); } -module BasicSection(){ - InsertSection(); - HandleSection(); +module Demo(){ + translate([0,0,-5]) color("white") ExtrusionSect(); + LeverSectTop(); + LeverSectBot(); } -module Handle(){ - bs0 = retaining_len + overret_gaplen; - bs1 = bs0 + overret_hch; - linear_extrude(height=total_len, convexity=100) GappingSection(); - linear_extrude(height=retaining_len, convexity=100) WithRetainSection(); - translate([0,0, bs1]) linear_extrude(height= total_len - bs1) - BasicSection(); - translate([0,0, bs1+0.1]) mirror([0,0,1]) { - intersection_for (sl=[0,1]) { - multmatrix([[1,0,0,0], - [0,1,sl*0.65,0], - [0,0,1,0], - [0,0,0,1]]) - linear_extrude(height= overret_gaplen+1, convexity=100) - BasicSection(); - } - } +module LeverTop(){ + linear_extrude(height=width, convexity=100) LeverSectTop(); } -module Demo(){ - color("red") translate([0,0,-3]) BasicSection(); - color("blue") translate([0,0,3]) WithRetainSection(); +module LeverBot(inadj=false){ + linear_extrude(height=width, convexity=100) LeverSectBot(inadj); } module Test(){ - linear_extrude(height=2) { - WithRetainSection(); - translate([0, -handle_y0 + topprotr_y + 10]) - BasicSection(); - } + translate([0,2,0]) LeverTop(); + LeverBot(); + translate([0,-opening_height - 2,0]) LeverBot(true); } //Demo(); -//HandleSection(); -//InsertSection(); -//WithRetainSection(); -//BasicSection(); -//GappingSection(); -//Test(); -Demo(); -//Handle(); +Test();