255 lines
7.4 KiB
OpenSCAD
255 lines
7.4 KiB
OpenSCAD
//Parametric L Bracket
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//You can make this any length, Width, Height & Thickness you want
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//You can also have 1, 2 or 4 screws on each leg of the L
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//8/19/2015 By: David Bunch
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//
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//Revised 8/20/2015 to make rounded ends instead of chamfers
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// and more flexibility on screws
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//CUSTOMIZER VARIABLES
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/* [Basic Dimensions] */
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//1. Length of Part along 1st L
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Len = 1.75*25.4; //[25:1:75]
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//2. Width of L along 2nd L
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Wid = 0.65*25.4; //[25:1:75]
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//3. Height of L Bracket
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Ht = 1*25.4; //[20:1:75]
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//4. Thickness of Leg along X-Axis
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Thk_X = 0.25*25.4; //[2:.5:12]
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//5. Thickness of Leg along Y-axis
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Thk_Y = 0.5*25.4; //[2:.5:12]
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//6. Weld Diameter at L junction
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WeldDia = 0.5*25.4; //[2:.5:12]
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//7. Round Corners (0 = No, 1 = Yes)
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RndON = 1; //[0:No, 1:Yes]
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//8. # of parts to make (1,2,3 or 4)
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Parts = 1; //[1:1:4]
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/* [Hole Sizes] */
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//9. Hole Diameter for Screws (#8 screw default)
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HoleSize = 3; //[0:#6, 1:#8, 2:#10, 3:3mm, 4:4mm, 5:5mm, 6:6mm]
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//#10 Screws are 4.5 measured
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//#8 Screws are 4.2 measured
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//#6 Screws are 3.4 measured
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//10. Taper or Countersink Hole
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Tap_CnkSnk = 1; //[0:None, 1:Tapered, 2:Counter Sink]
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//11. Drill Hole Tolerance
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Tolerance = .1; //[0:.05:.8]
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/* [Hole Offsets] */
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//12. 1st Hole Offset distance from end of X-Axis
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HoleOffset_X1 = 10; //[6:.5:30]
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//13. 2nd Hole Offset distance from 1st Hole of X-Axis
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HoleOffset_X2 = 10; //[6:.5:30]
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//14. 1st Hole Offset distance from end of Y-Axis
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HoleOffset_Y1 = 0.5*25.4; //[6:.5:30]
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//15. 2nd Hole Offset distance from 1st Hole of Y-Axis
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HoleOffset_Y2 = 10; //[6:.5:30]
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/* [Number of Holes] */
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//16. # of Screws on each side of L (1 or 2)
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Screws_X = 2; //[1:One Screw, 2:Two Screws]
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//17. # of Screws on each side of L (1 or 2)
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Screws_Y = 1; //[1:One Screw, 2:Two Screws]
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//18. # of Screws along Height of L on X-Axis (1 or 2)
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Screws_ZX = 1; //[1:One Screw, 2:Two Screws]
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//19. # of Screws along Height of L on Y-Axis (1 or 2)
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Screws_ZY = 1; //[1:One Screw, 2:Two Screws]
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//20. Screw Height (I use 3/4" screws for default)
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ScrewHt = 19.0; //[9.5:.5:38]
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//CUSTOMIZER VARIABLES END
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//HoleSize = 4.2; //[#6:3.4, #8:4.2, #10:4.5, 3mm:3, 4mm:4, 5mm:5, 6mm:6]
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// //#10 Screws are 4.5 measured
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// //#8 Screws are 4.2 measured
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// //#6 Screws are 3.4 measured
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//
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////10. Taper or Countersink Hole
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//Tap_CnkSnk = 1; //[0:None, 1:Tapered, 2:Counter Sink]
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//
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////11. Dia. of Taper Head of Screw (#8 used for default)
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//TaperDia = 7.9; //[6.45:#6, 7.95:#8, 9.0:#10, 6:3mm, 4mm:8, 5mm:10, 6mm:12]
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A_Hole_OD = [3.4,4.2,4.5,3,4,5,6];
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A_Head_OD = [6.45,7.95,9,6,8,10,12];
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A_TaperLen = [2.66,3.5,3.9,3,4.2,5.5,6.5];
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HoleOD = A_Hole_OD[HoleSize] + Tolerance; //Calculated Hole Diameter
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TapOD = A_Head_OD[HoleSize] + Tolerance; //Calculated Tapered Head Diameter
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TaperLen = A_TaperLen[HoleSize];
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WeldRad = WeldDia / 2; //Radius of Weld
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//Calcs for Hole(s) along X axis
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Ht2ZX = Ht / (Screws_ZX + 1); //Half Height or 1/3 height if 2 screws are used
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echo("Ht2ZX = ", Ht2ZX);
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H_X = (Len - Thk_Y - WeldRad) / (Screws_X + 1);
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echo("H_X = ",H_X);
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//Hole_X = H_X + Thk_Y + WeldRad;
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Hole_X1 = Len - HoleOffset_X1;
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Hole_X2 = Hole_X1 - HoleOffset_X2;
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echo("Hole_X1 = ",Hole_X1);
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//Hole_X2 = Hole_X1 + H_X;
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echo("Hole_X2 = ",Hole_X2);
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//
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//Calcs for Hole(s) along Y axis
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Ht2ZY = Ht / (Screws_ZY + 1); //Half Height or 1/3 height if 2 screws are used
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echo("Ht2ZY = ", Ht2ZY);
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H_Y = (Wid - Thk_X - WeldRad) / (Screws_Y + 1);
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echo("H_Y = ",H_Y);
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//Hole_Y = H_Y + Thk_X + WeldRad;
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Hole_Y1 = Wid - HoleOffset_Y1;
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Hole_Y2 = Hole_Y1 - HoleOffset_Y2;
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echo("Hole_Y = ",Hole_Y1);
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//Hole_Y2 = Hole_Y + H_Y;
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echo("Hole_Y2 = ",Hole_Y2);
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//
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ScrewThreadHt = ScrewHt - TaperLen;
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Ht2x = Ht * 2;
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Ht_Half = Ht / 2;
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Ires = round(((Ht * 3.14) / 4) / .8) * 4;
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Hole_Res = round(((TapOD * 3.14) / 4) / 1) * 4;
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echo(Hole_Res = Hole_Res);
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module DrawSrewCut()
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{
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//This combines the head to the screw
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if (Tap_CnkSnk == 0)
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{
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cylinder(d=HoleOD,h=ScrewThreadHt,$fn=Hole_Res);
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} else if (Tap_CnkSnk == 1)
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{
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union()
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{
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cylinder(d1=TapOD,d2=HoleOD,h=TaperLen,$fn=Hole_Res);
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cylinder(d=HoleOD,h=ScrewThreadHt,$fn=Hole_Res);
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}
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} else if (Tap_CnkSnk == 2)
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{
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union()
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{
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cylinder(d=TapOD,h=TaperLen,$fn=Hole_Res);
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cylinder(d=HoleOD,h=ScrewThreadHt,$fn=Hole_Res);
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}
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}
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}
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module LBracket()
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{
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union()
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{
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cube([Len,Thk_X,Ht]); //Draw the X axis side
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cube([Thk_Y,Wid,Ht]); //Draw the Y axis side
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translate([Thk_Y,Thk_X,0])
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cylinder(d=WeldDia,h=Ht,$fn=4); //Add the Weld
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}
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}
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module RndCorner_XY()
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{
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difference()
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{
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cylinder(d=Ht2x,h=Thk_X+Thk_Y,$fn=Ires);
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translate([0,0,-1])
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cylinder(d=Ht,h=Thk_X+Thk_Y+2,$fn=Ires);
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translate([-(Ht2x+2),-(Ht+1),-1])
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cube([Ht2x+2,Ht2x+2,Thk_X+Thk_Y+2]);
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}
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}
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module Screws_X()
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{
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//Drill holes for Screws along the X axis
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translate([Hole_X1,Thk_X+.02,Ht2ZX])
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rotate([90,0,0])
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DrawSrewCut();
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if (Screws_X == 2)
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{
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translate([Hole_X2,Thk_X+.02,Ht2ZX])
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rotate([90,0,0])
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DrawSrewCut();
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}
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}
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module Screws_Y()
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{
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//Drill holes for Screws along the Y axis
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translate([Thk_Y+.02,Hole_Y1,Ht2ZY])
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rotate([0,-90,0])
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DrawSrewCut();
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if (Screws_Y == 2)
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{
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translate([Thk_Y+.02,Hole_Y2,Ht2ZY])
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rotate([0,-90,0])
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DrawSrewCut();
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}
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}
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module DrawL()
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{
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rotate([90,0,0])
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difference()
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{
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LBracket();
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Screws_X();
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if (Screws_ZX == 2)
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{
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translate([0,0,Ht2ZX])
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Screws_X();
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}
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Screws_Y();
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if (Screws_ZY == 2)
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{
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translate([0,0,Ht2ZY])
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Screws_Y();
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}
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if (RndON == 1)
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{
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//Round the X-Axis Corner
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translate([Len-Ht_Half,-1,Ht_Half])
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rotate([-90,0,0])
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RndCorner_XY();
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//Round the Y-Axis Corner
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translate([-1,Wid-Ht_Half,Ht_Half])
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rotate([90,0,90])
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RndCorner_XY();
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}
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//The following section is only for visual checks of how far screws go into wood
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//These will not draw on final render
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translate([0,-12.7,0])
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%cube([Hole_X1,12.7,38.1]); //Check how far screw goes into 1/2" wood
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translate([-19.02,0,0])
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%cube([19.02,Hole_Y1,38.1]); //Check how far screw goes into 3/4" wood
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if (Tap_CnkSnk != 0)
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{
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translate([Hole_X1,Thk_X + 2 + TaperLen,Ht2ZX])
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rotate([90,0,0])
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color("red")
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%DrawSrewCut();
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translate([Thk_Y+2+TaperLen,Hole_Y1,Ht2ZY])
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rotate([0,-90,0])
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color("red")
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%DrawSrewCut();
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}
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}
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}
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//Draw how ever many parts user wants along the Y-Axis
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for ( i = [1 : Parts] )
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{
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translate([0,(Ht+6) * i,0])
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DrawL();
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}
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