diff --git a/LICENSE.md b/LICENSE.md new file mode 100644 index 0000000..65c5ca8 --- /dev/null +++ b/LICENSE.md @@ -0,0 +1,165 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. 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Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff --git a/README.md b/README.md index d393d0d..764af75 100644 --- a/README.md +++ b/README.md @@ -4,6 +4,8 @@ Use [OpenScad](www.openscad.org/) to compile end export STL models for printing. File `assembly.scad` contains all parts assembled together for preview. When opening file individually, uncomment single function call in the beginning of the file to render this particular part. +![preview](preview.jpeg) + Bill of non-printable materials: - 2x stepper motor, flange nema17 @@ -21,4 +23,4 @@ Bill of non-printable materials: - 4x M2.5x10 screws (for switches) - 5x 604zz bearings - 1x MXL belt 8 mm wide, 1500 mm -- 2x MXL gears for 5 mm axis \ No newline at end of file +- 2x MXL gears for 5 mm axis diff --git a/assembly.scad b/assembly.scad index 168eddc..2304edd 100644 --- a/assembly.scad +++ b/assembly.scad @@ -1,15 +1,19 @@ -include ; -// files bellow contain printable solids include ; +include ; include ; include ; include ; include ; +use ; +use ; for(mul = [1,-1]) -translate([0,-mul*136+80,linear_bearing_r]) scale([1,mul,1]) rotate([90,0,0]) - x_end(); + translate([0,-mul*136+80,linear_bearing_r]) scale([1,mul,1]) + { + rotate([90,0,0]) x_end(); + translate([0,-35,-4]) Pulley16Teeth(); + } translate([-base_width/2,0,0]) { @@ -41,4 +45,14 @@ module carriage_assembly() guide(true); } } +} + +// belt arrangement is for preview only! +h = 11.0; +bl = 300+45; +color([0.1,0.1,0.1]){ + for(mul = [1,-1]){ + scale([mul,1,1]) translate([6,-90,h])rotate([0,0,90]) belting("straight",belt_profile, belt_length = bl, belting_width = 8 ); + translate([-115,base_width/2+mul*6,h]) scale([1,-mul,1]) belting("straight",belt_profile, belt_length = bl-40, belting_width = 8 ); + } } \ No newline at end of file diff --git a/common.scad b/common.scad index 5376b43..5bc1f4e 100644 --- a/common.scad +++ b/common.scad @@ -1,4 +1,3 @@ -// file with helpful modules only module screw_hole(dia,depth, nut_holes) { cylinder(r=dia/2, h=depth, $fn=8); diff --git a/preview.jpeg b/preview.jpeg new file mode 100644 index 0000000..1517602 Binary files /dev/null and b/preview.jpeg differ diff --git a/pulley.scad b/pulley.scad new file mode 100644 index 0000000..47125cd --- /dev/null +++ b/pulley.scad @@ -0,0 +1,711 @@ +// Parametric Pulley with multiple belt profiles +// by droftarts January 2012 + +// Based on pulleys by: +// http://www.thingiverse.com/thing:11256 by me! +// https://github.com/prusajr/PrusaMendel by Josef Prusa +// http://www.thingiverse.com/thing:3104 by GilesBathgate +// http://www.thingiverse.com/thing:2079 by nophead + +// dxf tooth data from http://oem.cadregister.com/asp/PPOW_Entry.asp?company=915217&elementID=07807803/METRIC/URETH/WV0025/F +// pulley diameter checked and modelled from data at http://www.sdp-si.com/D265/HTML/D265T016.html + +/** + * @name Pulley + * @category Printed + * @using 1 x m3 nut, normal or nyloc + * @using 1 x m3x10 set screw or 1 x m3x8 grub screw + */ + +Pulley16Teeth(); + +module Pulley16Teeth() +{ + Pulley( +teeth = 18, // Number of teeth, standard Mendel T5 belt = 8, gives Outside Diameter of 11.88mm +profile = 1, // 1=MXL 2=40DP 3=XL 4=H 5=T2.5 6=T5 7=T10 8=AT5 9=HTD_3mm 10=HTD_5mm 11=HTD_8mm 12=GT2_2mm 13=GT2_3mm 14=GT2_5mm + +motor_shaft = 5.5, // NEMA17 motor shaft exact diameter = 5 +m3_dia = 3.5, // 3mm hole diameter +m3_nut_hex = 1, // 1 for hex, 0 for square nut +m3_nut_flats = 5.8, // normal M3 hex nut exact width = 5.5 +m3_nut_depth = 2.8, // normal M3 hex nut exact depth = 2.4, nyloc = 4 + +retainer = 1, // Belt retainer above teeth, 0 = No, 1 = Yes +retainer_ht = 1, // height of retainer flange over pulley, standard = 1.5 +idler = 1, // Belt retainer below teeth, 0 = No, 1 = Yes +idler_ht = 0, // height of idler flange over pulley, standard = 1.5 + +pulley_t_ht = 10, // length of toothed part of pulley, standard = 12 +pulley_b_ht = 7.5, // pulley base height, standard = 8. Set to same as idler_ht if you want an idler but no pulley. +pulley_b_dia = 17.1, // pulley base diameter, standard = 20 +no_of_nuts = 1, // number of captive nuts required, standard = 1 +nut_angle = 90, // angle between nuts, standard = 90 +nut_shaft_distance = 0.8, // distance between inner face of nut and shaft, can be negative. + + +// ******************************** +// ** Scaling tooth for good fit ** +// ******************************** +// To improve fit of belt to pulley, set the following constant. Decrease or increase by 0.1mm at a time. We are modelling the *BELT* tooth here, not the tooth on the pulley. Increasing the number will *decrease* the pulley tooth size. Increasing the tooth width will also scale proportionately the tooth depth, to maintain the shape of the tooth, and increase how far into the pulley the tooth is indented. Can be negative + + +additional_tooth_width = 0.2, //mm + +// If you need more tooth depth than this provides, adjust the following constant. However, this will cause the shape of the tooth to change. +additional_tooth_depth = 0 //mm +); +} + + +/* + + +Pulley( +teeth = 80, // Number of teeth, standard Mendel T5 belt = 8, gives Outside Diameter of 11.88mm +profile = 12, // 1=MXL 2=40DP 3=XL 4=H 5=T2.5 6=T5 7=T10 8=AT5 9=HTD_3mm 10=HTD_5mm 11=HTD_8mm 12=GT2_2mm 13=GT2_3mm 14=GT2_5mm + +motor_shaft = 5.2, // NEMA17 motor shaft exact diameter = 5 +m3_dia = 3.2, // 3mm hole diameter +m3_nut_hex = 1, // 1 for hex, 0 for square nut +m3_nut_flats = 5.7, // normal M3 hex nut exact width = 5.5 +m3_nut_depth = 2.7, // normal M3 hex nut exact depth = 2.4, nyloc = 4 + +retainer = 1, // Belt retainer above teeth, 0 = No, 1 = Yes +retainer_ht = 1, // height of retainer flange over pulley, standard = 1.5 +idler = 1, // Belt retainer below teeth, 0 = No, 1 = Yes +idler_ht = 1, // height of idler flange over pulley, standard = 1.5 + +pulley_t_ht = 7, // length of toothed part of pulley, standard = 12 +pulley_b_ht = 0, // pulley base height, standard = 8. Set to same as idler_ht if you want an idler but no pulley. +pulley_b_dia = 20, // pulley base diameter, standard = 20 +no_of_nuts = 1, // number of captive nuts required, standard = 1 +nut_angle = 90, // angle between nuts, standard = 90 +nut_shaft_distance = 1.2, // distance between inner face of nut and shaft, can be negative. + + +// ******************************** +// ** Scaling tooth for good fit ** +// ******************************** + +additional_tooth_width = 0.2, //mm + +// If you need more tooth depth than this provides, adjust the following constant. However, this will cause the shape of the tooth to change. +additional_tooth_depth = 0 //mm +); +*/ + +// tuneable constants +module Pulley( +teeth = 80, // Number of teeth, standard Mendel T5 belt = 8, gives Outside Diameter of 11.88mm +profile = 12, // 1=MXL 2=40DP 3=XL 4=H 5=T2.5 6=T5 7=T10 8=AT5 9=HTD_3mm 10=HTD_5mm 11=HTD_8mm 12=GT2_2mm 13=GT2_3mm 14=GT2_5mm + +motor_shaft = 5.2, // NEMA17 motor shaft exact diameter = 5 +m3_dia = 3.2, // 3mm hole diameter +m3_nut_hex = 1, // 1 for hex, 0 for square nut +m3_nut_flats = 5.7, // normal M3 hex nut exact width = 5.5 +m3_nut_depth = 2.7, // normal M3 hex nut exact depth = 2.4, nyloc = 4 + +retainer = 1, // Belt retainer above teeth, 0 = No, 1 = Yes +retainer_ht = 1, // height of retainer flange over pulley, standard = 1.5 +idler = 1, // Belt retainer below teeth, 0 = No, 1 = Yes +idler_ht = 1, // height of idler flange over pulley, standard = 1.5 + +pulley_t_ht = 7, // length of toothed part of pulley, standard = 12 +pulley_b_ht = 0, // pulley base height, standard = 8. Set to same as idler_ht if you want an idler but no pulley. +pulley_b_dia = 20, // pulley base diameter, standard = 20 +no_of_nuts = 1, // number of captive nuts required, standard = 1 +nut_angle = 90, // angle between nuts, standard = 90 +nut_shaft_distance = 1.2, // distance between inner face of nut and shaft, can be negative. + + +// ******************************** +// ** Scaling tooth for good fit ** +// ******************************** +/* To improve fit of belt to pulley, set the following constant. Decrease or increase by 0.1mm at a time. We are modelling the *BELT* tooth here, not the tooth on the pulley. Increasing the number will *decrease* the pulley tooth size. Increasing the tooth width will also scale proportionately the tooth depth, to maintain the shape of the tooth, and increase how far into the pulley the tooth is indented. Can be negative */ + +additional_tooth_width = 0.2, //mm + +// If you need more tooth depth than this provides, adjust the following constant. However, this will cause the shape of the tooth to change. +additional_tooth_depth = 0 //mm +) +{ + +translate([0,0,idler_ht]) + { + +// calculated constants + +nut_elevation = pulley_b_ht/2; +m3_nut_points = 2*((m3_nut_flats/2)/cos(30)); // This is needed for the nut trap + +// The following set the pulley diameter for a given number of teeth + +MXL_pulley_dia = tooth_spacing (2.032,0.254,teeth); +40DP_pulley_dia = tooth_spacing (2.07264,0.1778,teeth); +XL_pulley_dia = tooth_spacing (5.08,0.254,teeth); +H_pulley_dia = tooth_spacing (9.525,0.381,teeth); +T2_5_pulley_dia = tooth_spaceing_curvefit (0.7467,0.796,1.026,teeth); +T5_pulley_dia = tooth_spaceing_curvefit (0.6523,1.591,1.064,teeth); +T10_pulley_dia = tooth_spacing (10,0.93,teeth); +AT5_pulley_dia = tooth_spaceing_curvefit (0.6523,1.591,1.064,teeth); +HTD_3mm_pulley_dia = tooth_spacing (3,0.381,teeth); +HTD_5mm_pulley_dia = tooth_spacing (5,0.5715,teeth); +HTD_8mm_pulley_dia = tooth_spacing (8,0.6858,teeth); +GT2_2mm_pulley_dia = tooth_spacing (2,0.254,teeth); +GT2_3mm_pulley_dia = tooth_spacing (3,0.381,teeth); +GT2_5mm_pulley_dia = tooth_spacing (5,0.5715,teeth); + +// The following calls the pulley creation part, and passes the pulley diameter and tooth width to that module + +if ( profile == 1 ) + { + pulley ( "MXL" , MXL_pulley_dia , 0.508 , 1.321, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); +} +if ( profile == 2 ) + { + pulley ( "40 D.P." , 40DP_pulley_dia , 0.457 , 1.226, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 3 ) { pulley ( "XL" , XL_pulley_dia , 1.27, 3.051, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 4 ) { pulley ( "H" , H_pulley_dia ,1.905 , 5.359, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 5 ) { pulley ( "T2.5" , T2_5_pulley_dia , 0.7 , 1.678, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 6 ) { pulley ( "T5" , T5_pulley_dia , 1.19 , 3.264, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 7 ) { pulley ( "T10" , T10_pulley_dia , 2.5 , 6.13, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 8 ) { pulley ( "AT5" , AT5_pulley_dia , 1.19 , 4.268, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 9 ) { pulley ( "HTD 3mm" , HTD_3mm_pulley_dia , 1.289 , 2.27, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 10 ) { pulley ( "HTD 5mm" , HTD_5mm_pulley_dia , 2.199 , 3.781, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 11 ) { pulley ( "HTD 8mm" , HTD_8mm_pulley_dia , 3.607 , 6.603, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 12 ) { pulley ( "GT2 2mm" , GT2_2mm_pulley_dia , 0.764 , 1.494, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 13 ) { pulley ( "GT2 3mm" , GT2_3mm_pulley_dia , 1.169 , 2.31, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +if ( profile == 14 ) { pulley ( "GT2 5mm" , GT2_5mm_pulley_dia , 1.969 , 3.952, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points + ); + } +} +// Functions + +function tooth_spaceing_curvefit (b,c,d,teeth) + = ((c * pow(teeth,d)) / (b + pow(teeth,d))) * teeth ; + +function tooth_spacing(tooth_pitch,pitch_line_offset,teeth) + = (2*((teeth*tooth_pitch)/(3.14159265*2)-pitch_line_offset)) ; + +// Main Module + +module pulley( belt_type , pulley_OD , tooth_depth , tooth_width, + teeth, + profile, + motor_shaft, + m3_dia, + m3_nut_hex, + m3_nut_flats, + m3_nut_depth, + retainer, + retainer_ht, + idler, + idler_ht, + pulley_t_ht, + pulley_b_ht, + pulley_b_dia, + no_of_nuts, + nut_angle, + nut_shaft_distance, + additional_tooth_width, + additional_tooth_depth, + nut_elevation, + m3_nut_points) + { + echo (str("Belt type = ",belt_type,"; Number of teeth = ",teeth,"; Pulley Outside Diameter = ",pulley_OD,"mm ")); + tooth_distance_from_centre = sqrt( pow(pulley_OD/2,2) - pow((tooth_width+additional_tooth_width)/2,2)); + tooth_width_scale = (tooth_width + additional_tooth_width ) / tooth_width; + tooth_depth_scale = ((tooth_depth + additional_tooth_depth ) / tooth_depth) ; + + +// ************************************************************************ +// *** uncomment the following line if pulley is wider than puller base *** +// ************************************************************************ + +// translate ([0,0, pulley_b_ht + pulley_t_ht + retainer_ht ]) rotate ([0,180,0]) + + difference() + { + union() + { + //base + + if ( pulley_b_ht < 2 ) { echo ("CAN'T DRAW PULLEY BASE, HEIGHT LESS THAN 2!!!"); } else { + rotate_extrude($fn=pulley_b_dia*2) + { + square([pulley_b_dia/2-1,pulley_b_ht]); + square([pulley_b_dia/2,pulley_b_ht-1]); + translate([pulley_b_dia/2-1,pulley_b_ht-1]) circle(1); + } + } + + difference() + { + //shaft - diameter is outside diameter of pulley + + translate([0,0,pulley_b_ht]) + rotate ([0,0,360/(teeth*4)]) + cylinder(r=pulley_OD/2,h=pulley_t_ht, $fn=teeth*4); + + //teeth - cut out of shaft + + for(i=[1:teeth]) + rotate([0,0,i*(360/teeth)]) + translate([0,-tooth_distance_from_centre,pulley_b_ht -1]) + scale ([ tooth_width_scale , tooth_depth_scale , 1 ]) + { + if ( profile == 1 ) { MXL(pulley_t_ht);} + if ( profile == 2 ) { 40DP(pulley_t_ht);} + if ( profile == 3 ) { XL(pulley_t_ht);} + if ( profile == 4 ) { H(pulley_t_ht);} + if ( profile == 5 ) { T2_5(pulley_t_ht);} + if ( profile == 6 ) { T5(pulley_t_ht);} + if ( profile == 7 ) { T10(pulley_t_ht);} + if ( profile == 8 ) { AT5(pulley_t_ht);} + if ( profile == 9 ) { HTD_3mm(pulley_t_ht);} + if ( profile == 10 ) { HTD_5mm(pulley_t_ht);} + if ( profile == 11 ) { HTD_8mm(pulley_t_ht);} + if ( profile == 12 ) { GT2_2mm(pulley_t_ht);} + if ( profile == 13 ) { GT2_3mm(pulley_t_ht);} + if ( profile == 14 ) { GT2_5mm(pulley_t_ht);} + } + + } + + //belt retainer / idler + if ( retainer > 0 ) {translate ([0,0, pulley_b_ht + pulley_t_ht ]) + rotate_extrude($fn=teeth*4) + polygon([[0,0],[pulley_OD/2,0],[pulley_OD/2 + retainer_ht , retainer_ht],[0 , retainer_ht],[0,0]]);} + + if ( idler > 0 ) {translate ([0,0, pulley_b_ht - idler_ht ]) + rotate_extrude($fn=teeth*4) + polygon([[0,0],[pulley_OD/2 + idler_ht,0],[pulley_OD/2 , idler_ht],[0 , idler_ht],[0,0]]);} + + } + + //hole for motor shaft + translate([0,0,-1])cylinder(r=motor_shaft/2,h=pulley_b_ht + pulley_t_ht + retainer_ht + 2,$fn=motor_shaft*4); + + //captive nut and grub screw holes + + if ( pulley_b_ht < m3_nut_flats ) { echo ("CAN'T DRAW CAPTIVE NUTS, HEIGHT LESS THAN NUT DIAMETER!!!"); } else { + if ( (pulley_b_dia - motor_shaft)/2 < m3_nut_depth + 3 ) { echo ("CAN'T DRAW CAPTIVE NUTS, DIAMETER TOO SMALL FOR NUT DEPTH!!!"); } else { + + for(j=[1:no_of_nuts]) rotate([0,0,j*nut_angle]) + translate([0,0,nut_elevation])rotate([90,0,0]) + + union() + { + //entrance + translate([0,-pulley_b_ht/4-0.5,motor_shaft/2+m3_nut_depth/2+nut_shaft_distance]) cube([m3_nut_flats,pulley_b_ht/2+1,m3_nut_depth],center=true); + + //nut + if ( m3_nut_hex > 0 ) + { + // hex nut + translate([0,0.25,motor_shaft/2+m3_nut_depth/2+nut_shaft_distance]) rotate([0,0,30]) cylinder(r=m3_nut_points/2,h=m3_nut_depth,center=true,$fn=6); + } else { + // square nut + translate([0,0.25,motor_shaft/2+m3_nut_depth/2+nut_shaft_distance]) cube([m3_nut_flats,m3_nut_flats,m3_nut_depth],center=true); + } + + //grub screw hole + rotate([0,0,22.5])cylinder(r=m3_dia/2,h=pulley_b_dia/2+1,$fn=8); + } + }} + } + } + } + + +// Tooth profile modules + +module MXL(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-0.660421,-0.5],[-0.660421,0],[-0.621898,0.006033],[-0.587714,0.023037],[-0.560056,0.049424],[-0.541182,0.083609],[-0.417357,0.424392],[-0.398413,0.458752],[-0.370649,0.48514],[-0.336324,0.502074],[-0.297744,0.508035],[0.297744,0.508035],[0.336268,0.502074],[0.370452,0.48514],[0.39811,0.458752],[0.416983,0.424392],[0.540808,0.083609],[0.559752,0.049424],[0.587516,0.023037],[0.621841,0.006033],[0.660421,0],[0.660421,-0.5]]); + } + +module 40DP(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-0.612775,-0.5],[-0.612775,0],[-0.574719,0.010187],[-0.546453,0.0381],[-0.355953,0.3683],[-0.327604,0.405408],[-0.291086,0.433388],[-0.248548,0.451049],[-0.202142,0.4572],[0.202494,0.4572],[0.248653,0.451049],[0.291042,0.433388],[0.327609,0.405408],[0.356306,0.3683],[0.546806,0.0381],[0.574499,0.010187],[0.612775,0],[0.612775,-0.5]]); + } + +module XL(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-1.525411,-1],[-1.525411,0],[-1.41777,0.015495],[-1.320712,0.059664],[-1.239661,0.129034],[-1.180042,0.220133],[-0.793044,1.050219],[-0.733574,1.141021],[-0.652507,1.210425],[-0.555366,1.254759],[-0.447675,1.270353],[0.447675,1.270353],[0.555366,1.254759],[0.652507,1.210425],[0.733574,1.141021],[0.793044,1.050219],[1.180042,0.220133],[1.239711,0.129034],[1.320844,0.059664],[1.417919,0.015495],[1.525411,0],[1.525411,-1]]); + } + +module H(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-2.6797,-1],[-2.6797,0],[-2.600907,0.006138],[-2.525342,0.024024],[-2.45412,0.052881],[-2.388351,0.091909],[-2.329145,0.140328],[-2.277614,0.197358],[-2.234875,0.262205],[-2.202032,0.334091],[-1.75224,1.57093],[-1.719538,1.642815],[-1.676883,1.707663],[-1.62542,1.764693],[-1.566256,1.813112],[-1.500512,1.85214],[-1.4293,1.880997],[-1.353742,1.898883],[-1.274949,1.905021],[1.275281,1.905021],[1.354056,1.898883],[1.429576,1.880997],[1.500731,1.85214],[1.566411,1.813112],[1.625508,1.764693],[1.676919,1.707663],[1.719531,1.642815],[1.752233,1.57093],[2.20273,0.334091],[2.235433,0.262205],[2.278045,0.197358],[2.329455,0.140328],[2.388553,0.091909],[2.454233,0.052881],[2.525384,0.024024],[2.600904,0.006138],[2.6797,0],[2.6797,-1]]); + } + +module T2_5(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-0.839258,-0.5],[-0.839258,0],[-0.770246,0.021652],[-0.726369,0.079022],[-0.529167,0.620889],[-0.485025,0.67826],[-0.416278,0.699911],[0.416278,0.699911],[0.484849,0.67826],[0.528814,0.620889],[0.726369,0.079022],[0.770114,0.021652],[0.839258,0],[0.839258,-0.5]]); + } + +module T5(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-1.632126,-0.5],[-1.632126,0],[-1.568549,0.004939],[-1.507539,0.019367],[-1.450023,0.042686],[-1.396912,0.074224],[-1.349125,0.113379],[-1.307581,0.159508],[-1.273186,0.211991],[-1.246868,0.270192],[-1.009802,0.920362],[-0.983414,0.978433],[-0.949018,1.030788],[-0.907524,1.076798],[-0.859829,1.115847],[-0.80682,1.147314],[-0.749402,1.170562],[-0.688471,1.184956],[-0.624921,1.189895],[0.624971,1.189895],[0.688622,1.184956],[0.749607,1.170562],[0.807043,1.147314],[0.860055,1.115847],[0.907754,1.076798],[0.949269,1.030788],[0.9837,0.978433],[1.010193,0.920362],[1.246907,0.270192],[1.273295,0.211991],[1.307726,0.159508],[1.349276,0.113379],[1.397039,0.074224],[1.450111,0.042686],[1.507589,0.019367],[1.568563,0.004939],[1.632126,0],[1.632126,-0.5]]); + } + +module T10(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-3.06511,-1],[-3.06511,0],[-2.971998,0.007239],[-2.882718,0.028344],[-2.79859,0.062396],[-2.720931,0.108479],[-2.651061,0.165675],[-2.590298,0.233065],[-2.539962,0.309732],[-2.501371,0.394759],[-1.879071,2.105025],[-1.840363,2.190052],[-1.789939,2.266719],[-1.729114,2.334109],[-1.659202,2.391304],[-1.581518,2.437387],[-1.497376,2.47144],[-1.408092,2.492545],[-1.314979,2.499784],[1.314979,2.499784],[1.408091,2.492545],[1.497371,2.47144],[1.581499,2.437387],[1.659158,2.391304],[1.729028,2.334109],[1.789791,2.266719],[1.840127,2.190052],[1.878718,2.105025],[2.501018,0.394759],[2.539726,0.309732],[2.59015,0.233065],[2.650975,0.165675],[2.720887,0.108479],[2.798571,0.062396],[2.882713,0.028344],[2.971997,0.007239],[3.06511,0],[3.06511,-1]]); + } + +module AT5(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-2.134129,-0.75],[-2.134129,0],[-2.058023,0.005488],[-1.984595,0.021547],[-1.914806,0.047569],[-1.849614,0.082947],[-1.789978,0.127073],[-1.736857,0.179338],[-1.691211,0.239136],[-1.653999,0.305859],[-1.349199,0.959203],[-1.286933,1.054635],[-1.201914,1.127346],[-1.099961,1.173664],[-0.986896,1.18992],[0.986543,1.18992],[1.099614,1.173664],[1.201605,1.127346],[1.286729,1.054635],[1.349199,0.959203],[1.653646,0.305859],[1.690859,0.239136],[1.73651,0.179338],[1.789644,0.127073],[1.849305,0.082947],[1.914539,0.047569],[1.984392,0.021547],[2.057906,0.005488],[2.134129,0],[2.134129,-0.75]]); + } + +module HTD_3mm(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-1.135062,-0.5],[-1.135062,0],[-1.048323,0.015484],[-0.974284,0.058517],[-0.919162,0.123974],[-0.889176,0.206728],[-0.81721,0.579614],[-0.800806,0.653232],[-0.778384,0.72416],[-0.750244,0.792137],[-0.716685,0.856903],[-0.678005,0.918199],[-0.634505,0.975764],[-0.586483,1.029338],[-0.534238,1.078662],[-0.47807,1.123476],[-0.418278,1.16352],[-0.355162,1.198533],[-0.289019,1.228257],[-0.22015,1.25243],[-0.148854,1.270793],[-0.07543,1.283087],[-0.000176,1.28905],[0.075081,1.283145],[0.148515,1.270895],[0.219827,1.252561],[0.288716,1.228406],[0.354879,1.19869],[0.418018,1.163675],[0.477831,1.123623],[0.534017,1.078795],[0.586276,1.029452],[0.634307,0.975857],[0.677809,0.91827],[0.716481,0.856953],[0.750022,0.792167],[0.778133,0.724174],[0.800511,0.653236],[0.816857,0.579614],[0.888471,0.206728],[0.919014,0.123974],[0.974328,0.058517],[1.048362,0.015484],[1.135062,0],[1.135062,-0.5]]); + } + +module HTD_5mm(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-1.89036,-0.75],[-1.89036,0],[-1.741168,0.02669],[-1.61387,0.100806],[-1.518984,0.21342],[-1.467026,0.3556],[-1.427162,0.960967],[-1.398568,1.089602],[-1.359437,1.213531],[-1.310296,1.332296],[-1.251672,1.445441],[-1.184092,1.552509],[-1.108081,1.653042],[-1.024167,1.746585],[-0.932877,1.832681],[-0.834736,1.910872],[-0.730271,1.980701],[-0.62001,2.041713],[-0.504478,2.09345],[-0.384202,2.135455],[-0.259708,2.167271],[-0.131524,2.188443],[-0.000176,2.198511],[0.131296,2.188504],[0.259588,2.167387],[0.384174,2.135616],[0.504527,2.093648],[0.620123,2.04194],[0.730433,1.980949],[0.834934,1.911132],[0.933097,1.832945],[1.024398,1.746846],[1.108311,1.653291],[1.184308,1.552736],[1.251865,1.445639],[1.310455,1.332457],[1.359552,1.213647],[1.39863,1.089664],[1.427162,0.960967],[1.467026,0.3556],[1.518984,0.21342],[1.61387,0.100806],[1.741168,0.02669],[1.89036,0],[1.89036,-0.75]]); + } + +module HTD_8mm(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-3.301471,-1],[-3.301471,0],[-3.16611,0.012093],[-3.038062,0.047068],[-2.919646,0.10297],[-2.813182,0.177844],[-2.720989,0.269734],[-2.645387,0.376684],[-2.588694,0.496739],[-2.553229,0.627944],[-2.460801,1.470025],[-2.411413,1.691917],[-2.343887,1.905691],[-2.259126,2.110563],[-2.158035,2.30575],[-2.041518,2.490467],[-1.910478,2.66393],[-1.76582,2.825356],[-1.608446,2.973961],[-1.439261,3.10896],[-1.259169,3.22957],[-1.069074,3.335006],[-0.869878,3.424485],[-0.662487,3.497224],[-0.447804,3.552437],[-0.226732,3.589341],[-0.000176,3.607153],[0.226511,3.589461],[0.447712,3.552654],[0.66252,3.497516],[0.870027,3.424833],[1.069329,3.33539],[1.259517,3.229973],[1.439687,3.109367],[1.608931,2.974358],[1.766344,2.825731],[1.911018,2.664271],[2.042047,2.490765],[2.158526,2.305998],[2.259547,2.110755],[2.344204,1.905821],[2.411591,1.691983],[2.460801,1.470025],[2.553229,0.627944],[2.588592,0.496739],[2.645238,0.376684],[2.720834,0.269734],[2.81305,0.177844],[2.919553,0.10297],[3.038012,0.047068],[3.166095,0.012093],[3.301471,0],[3.301471,-1]]); + } + +module GT2_2mm(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[0.747183,-0.5],[0.747183,0],[0.647876,0.037218],[0.598311,0.130528],[0.578556,0.238423],[0.547158,0.343077],[0.504649,0.443762],[0.451556,0.53975],[0.358229,0.636924],[0.2484,0.707276],[0.127259,0.750044],[0,0.76447],[-0.127259,0.750044],[-0.2484,0.707276],[-0.358229,0.636924],[-0.451556,0.53975],[-0.504797,0.443762],[-0.547291,0.343077],[-0.578605,0.238423],[-0.598311,0.130528],[-0.648009,0.037218],[-0.747183,0],[-0.747183,-0.5]]); + } + +module GT2_3mm(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-1.155171,-0.5],[-1.155171,0],[-1.065317,0.016448],[-0.989057,0.062001],[-0.93297,0.130969],[-0.90364,0.217664],[-0.863705,0.408181],[-0.800056,0.591388],[-0.713587,0.765004],[-0.60519,0.926747],[-0.469751,1.032548],[-0.320719,1.108119],[-0.162625,1.153462],[0,1.168577],[0.162625,1.153462],[0.320719,1.108119],[0.469751,1.032548],[0.60519,0.926747],[0.713587,0.765004],[0.800056,0.591388],[0.863705,0.408181],[0.90364,0.217664],[0.932921,0.130969],[0.988924,0.062001],[1.065168,0.016448],[1.155171,0],[1.155171,-0.5]]); + } + +module GT2_5mm(pulley_t_ht) + { + linear_extrude(height=pulley_t_ht+2) polygon([[-1.975908,-0.75],[-1.975908,0],[-1.797959,0.03212],[-1.646634,0.121224],[-1.534534,0.256431],[-1.474258,0.426861],[-1.446911,0.570808],[-1.411774,0.712722],[-1.368964,0.852287],[-1.318597,0.989189],[-1.260788,1.123115],[-1.195654,1.25375],[-1.12331,1.380781],[-1.043869,1.503892],[-0.935264,1.612278],[-0.817959,1.706414],[-0.693181,1.786237],[-0.562151,1.851687],[-0.426095,1.9027],[-0.286235,1.939214],[-0.143795,1.961168],[0,1.9685],[0.143796,1.961168],[0.286235,1.939214],[0.426095,1.9027],[0.562151,1.851687],[0.693181,1.786237],[0.817959,1.706414],[0.935263,1.612278],[1.043869,1.503892],[1.123207,1.380781],[1.195509,1.25375],[1.26065,1.123115],[1.318507,0.989189],[1.368956,0.852287],[1.411872,0.712722],[1.447132,0.570808],[1.474611,0.426861],[1.534583,0.256431],[1.646678,0.121223],[1.798064,0.03212],[1.975908,0],[1.975908,-0.75]]); + } \ No newline at end of file diff --git a/x_end.scad b/x_end.scad index 97e6980..87a2a3f 100644 --- a/x_end.scad +++ b/x_end.scad @@ -11,7 +11,6 @@ nema17_mount_hole_r = 3.5/2; nema17_mount_holes_spacing = 31.2; mount_width = nema17_width+3; -// print two same pieces //x_end(); diff --git a/y_end2.scad b/y_end2.scad index b151881..a89aaf5 100644 --- a/y_end2.scad +++ b/y_end2.scad @@ -17,7 +17,7 @@ module y_end2() translate([0,-block_width/2, 0]) { for(mul = [-1,1]) - translate([(belt_bearing_dia/2+1)*mul,rods_r+block_width/2+1,wall_tickness]) + translate([(belt_bearing_dia/2+1)*mul,rods_r+block_width/2-1,wall_tickness]) { //groove round translate([mul*1,0,-wall_tickness])rotate([-90,0,0]) @@ -25,7 +25,7 @@ module y_end2() //cube([4,4,wall_tickness]); //cube([belt_bearing_dia+10, belt_width*2, wall_tickness*2],center=true); rotate([0,90,90]) scale([1,1.3*mul,1]) - belting("straight",belt_profile, belt_length = 50, belting_width = belt_width ); + belting("straight",belt_profile, belt_length = 50, belting_width = belt_width+2 ); } //tool mount screw holes for(mul = [1,-1])