Please visit http://OpenSCAD.DIY3DTech.com for more information on this and many other projects! As in this episode we will be looking at our design up this quick change tool post holder for a small hand grinder! As I have been working on machining couplers for the micro-mill project, I found the need to index grub screw holes so I created this interesting tool post grinder for the mini-lathe and to my surprise this worked out rather well! So I will be working on a larger 555 motor version soon!
Parts Required:
Scotch Brite Discs: http://diy3dtech.com/38mm-abrasive-scotch-brite-wheels-for-dremel/
High Speed Spindle: http://diy3dtech.com/high-speed-spindle/
Quick Change Tool Post: http://diy3dtech.com/QuickChangeToolPost
Mini-Lathes: http://diy3dtech.com/mini-lathes/
Other Mini-Lathe Projects:
X Axis DRO: https://www.thingiverse.com/thing:3374946
Y Axis DRO: https://www.thingiverse.com/thing:3377850
Carriage Stop: https://www.thingiverse.com/thing:3371201
You can download the STL file here: https://www.thingiverse.com/thing:3423036
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/* * Open SCAD Name.: mini-lathe_grinder_v1.scad * Copyright (c)..: 2017 www.DIY3DTech.com * * Creation Date..: 02/10/2019 * Description....: 20x40 mount for 555 motor * * Rev 1: Develop Model * Rev 2: * * Built On: Open SCAD version 2017.01.20 * * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU General Public License as published by the Free Software * Foundation; either version 2 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE. See the GNU General Public License for more details. * * Note: the programing concepts within are shared openly in the hopes of educating * and training and can be used commercially. However the completed object itself * created as result of this code remains the sole intellectual property of Campbell * and Company Publishing LLC. If you have an interested in producing or using the * end product in a commercial application, please contact us at info@diy3dtech.com * for licensing possibilities. * */ /*------------------Customizer View-------------------*/ // preview[view:north, tilt:top] /*---------------------Parameters---------------------*/ /*--------------all mreasurements in mm---------------*/ motor_dia = 29.8; //motor dia brace_depth = 37; //depth of the brace shell_width = 6.0; //thinkness of shell cinch_height = 15; //height of cinch cinch_opening = 5; //cinch opening cinch_dia = 3; //opening for cinch cinch_recess = 13; //cinch recess opening cinch_adjust = 1; //rough cinch adjustment stanchion_height = 8; //height of stanchion tool = 12; //tool width (3/8 = 9.525) tool_offset = 20; //offset extend knurling = 1; //yes = 1 no = 0 /*-----------------------Execute----------------------*/ main_module(); /*-----------------------Modules----------------------*/ module main_module(){ //create module difference() { union() {//start union //create if/else logic loop for motor housing if (knurling==1) { //create motor housing and knerl the outside translate ([-(brace_depth/2) ,0,0]) rotate ([0,90,0]) k_cyl(brace_depth,(motor_dia+shell_width)); } else { //create motor housing without knerl translate ([0,0,0]) rotate ([0,90,0]) cylinder(brace_depth,(motor_dia+shell_width)/2,(motor_dia+shell_width)/2,$fn=60,true); }//end if logic loop //create cinch block translate ([0,0,(motor_dia/2)+shell_width]) rotate ([90,90,0]) rounded (cinch_height,brace_depth-2,(shell_width*2)+cinch_opening,1,true); //create stanchion translate ([tool_offset/2,0,-((motor_dia+shell_width)/2)-(stanchion_height/2)]) rotate ([0,0,90]) cube([tool,brace_depth+tool_offset,stanchion_height+2],true); } //end union //start subtraction of difference //dif motor from housing translate ([0,0,0]) rotate ([0,90,0]) cylinder(brace_depth+2,(motor_dia)/2,(motor_dia)/2,$fn=60,true); //create cinch opning translate ([0,0,(motor_dia/2)+shell_width]) rotate ([90,90,0]) rounded (cinch_height+2,brace_depth+2,cinch_opening,1,true); //create bolt holes for cinch translate ([(brace_depth/2)-(cinch_dia*2)-cinch_adjust ,0,(motor_dia/2)+(cinch_height/2)-1]) rotate ([90,0,0]) cylinder(((shell_width*2)+cinch_opening)+2,cinch_dia /2,cinch_dia/2,$fn=60,true); translate ([-(brace_depth/2)+(cinch_dia*2)+cinch_adjust ,0,(motor_dia/2)+(cinch_height/2)-1]) rotate ([90,0,0]) cylinder(((shell_width*2)+cinch_opening)+2,cinch_dia /2,cinch_dia /2,$fn=60,true); //create cinch recess - top translate ([(brace_depth/2)-(cinch_dia*2)-cinch_adjust ,(shell_width*3) ,(motor_dia/2)+(cinch_height/2)-1]) rotate ([90,0,0]) cylinder(((shell_width*2)+cinch_opening)+2,cinch_recess/2,cinch_recess/2,$fn=60,true); translate ([-(brace_depth/2)+(cinch_dia*2)+cinch_adjust ,(shell_width*3),(motor_dia/2)+(cinch_height/2)-1]) rotate ([90,0,0]) cylinder(((shell_width*2)+cinch_opening)+2,cinch_recess /2,cinch_recess/2,$fn=60,true); //create cinch recess - bottom translate ([(brace_depth/2)-(cinch_dia*2)-cinch_adjust ,-(shell_width*3) ,(motor_dia/2)+(cinch_height/2)-1]) rotate ([90,0,0]) cylinder(((shell_width*2)+cinch_opening)+2,cinch_recess/2,cinch_recess/2,$fn=60,true); translate ([-(brace_depth/2)+(cinch_dia*2)+cinch_adjust ,-(shell_width*3),(motor_dia/2)+(cinch_height/2)-1]) rotate ([90,0,0]) cylinder(((shell_width*2)+cinch_opening)+2,cinch_recess /2,cinch_recess/2,$fn=60,true); //create knockout for rail translate ([0,10,-(stanchion_height+((motor_dia+shell_width)/2))]) rotate ([0,0,0]) cube([12,6,4],true); translate ([0,-10,-(stanchion_height+((motor_dia+shell_width)/2))]) rotate ([0,0,0]) cube([12,6,4],true); } //end difference }//end module module rounded(x,y,z,c,center) { // c = Chamfer amount this will add (in mm) to each axis //create overlapping cubes //cube one overlapps in the X axis with chamfer "c" being doubled cube ([x+(c*2),y,z],true); //cube two overlapps in the Y axis with chamfer "c" being doubled cube ([x,y+(c*2),z],true); //end overlapping cubes //create corner circles translate ([-(x/2),-(y/2),0]) { cylinder( z,c,c,$fn=60,true); } translate ([-(x/2),(y/2),0]) { cylinder( z,c,c,$fn=60,true); } translate ([(x/2),-(y/2),0]) { cylinder( z,c,c,$fn=60,true); } translate ([(x/2),(y/2),0]) { cylinder( z,c,c,$fn=60,true); } //end coner circle } //end module module k_cyl(bnhg,bndia) { // create base module for knob body k_cyl_hg=bnhg; // Knurled cylinder height k_cyl_od=bndia; // Knurled cylinder outer* diameter knurl_wd=3; // Knurl polyhedron width knurl_hg=4; // Knurl polyhedron height knurl_dp=1; // Knurl polyhedron depth e_smooth=0; // Cylinder ends smoothed height s_smooth=0; // [ 0% - 100% ] Knurled surface smoothing amount knurled_cyl(k_cyl_hg, k_cyl_od, knurl_wd, knurl_hg, knurl_dp, e_smooth, s_smooth); }//end module module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt) { cord=(cod+cdp+cdp*smt/100)/2; cird=cord-cdp; cfn=round(2*cird*PI/cwd); clf=360/cfn; crn=ceil(chg/csh); intersection() { shape(fsh, cird, cord-cdp*smt/100, cfn*4, chg); translate([0,0,-(crn*csh-chg)/2]) knurled_finish(cord, cird, clf, csh, cfn, crn); } }//end module module shape(hsh, ird, ord, fn4, hg) { union() { cylinder(h=hsh, r1=ird, r2=ord, $fn=fn4, center=false); translate([0,0,hsh-0.002]) cylinder(h=hg-2*hsh+0.004, r=ord, $fn=fn4, center=false); translate([0,0,hg-hsh]) cylinder(h=hsh, r1=ord, r2=ird, $fn=fn4, center=false); } }//end module module knurled_finish(ord, ird, lf, sh, fn, rn) { for(j=[0:rn-1]) let(h0=sh*j, h1=sh*(j+1/2), h2=sh*(j+1)) { for(i=[0:fn-1]) let(lf0=lf*i, lf1=lf*(i+1/2), lf2=lf*(i+1)) { polyhedron( points=[ [ 0,0,h0], [ ord*cos(lf0), ord*sin(lf0), h0], [ ird*cos(lf1), ird*sin(lf1), h0], [ ord*cos(lf2), ord*sin(lf2), h0], [ ird*cos(lf0), ird*sin(lf0), h1], [ ord*cos(lf1), ord*sin(lf1), h1], [ ird*cos(lf2), ird*sin(lf2), h1], [ 0,0,h2], [ ord*cos(lf0), ord*sin(lf0), h2], [ ird*cos(lf1), ird*sin(lf1), h2], [ ord*cos(lf2), ord*sin(lf2), h2] ], faces=[ [0,1,2],[2,3,0], [1,0,4],[4,0,7],[7,8,4], [8,7,9],[10,9,7], [10,7,6],[6,7,0],[3,6,0], [2,1,4],[3,2,6],[10,6,9],[8,9,4], [4,5,2],[2,5,6],[6,5,9],[9,5,4] ], convexity=5); } } }//end module /*----------------------End Code----------------------*/ |
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Major Favor: if you make one of these please post the Make and share it with the community 🙂 .
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