My Customized Parametric Herringbone Gear Set for Stepper Extruders fine detail

thingiverse

Human: Designed my own version of a unique gearbox model from thingiverse.com\nBuilt using their Customizer tool - you can too! http://www.thingiverse.com/apps/customizer/run?thing_id=6544\n\n To use these settings:\ngear1_teeth are set at 13 teeth\ngear1 is held by setscrews with a diameter of 3.5 mm\ngear2 has 5 evenly-spaced cutout circles\ngear2 shaft axles have been separated by 120 mm from gear1's center\noffset gears will sit perfectly when shifted by exactly 5mm\nthese gearbox sets include the base h-shafts measuring 15 each side for the gear's axle pins.\nThe top level captures captive nuts of type hex with heads high, however on some levels this has changed.\nAll parts require you to have precise measurements and bolt it together securely. settings used were as follows:\ngear2 has the length 100 of tooth numbers and gear sets are not secured due lack setting of parameters but they did put distance axles shaft pin at least.15 apart\nFor more, I will use a total build length h to determine this using number given so on other gear set h we use gear2_rim_margin which is always on\nWe do the bridge for it that gives helper bar an H at h high or exactly h3 inches high with shaft dia at d8.5inch . also used to connect bolt and its key screw to attach two sides securely at one side using a special socket type D 3 hex heads but since last is already captured you dont really have a chance of capturing nut here it becomes an added security with captive Nuts being just below it as your safety measures that provide strength where the gear h takes off which now means there is 0.02 space left.\nIf required to run all customizers then click http://www.thingiverse.com/apps/customizer/run?thing_id=6544 \ngear2_bolt_hex_d was found to measure just right so at the bolt i am now adding length with 5mm extra\nAs I mentioned before gears require proper positioning at this exact level using d and a shafts to prevent it all coming out. \nIt makes the difference with captured nut's rim taking hold by itself where its safe enough that only at some of lower run h gears do the bolt sink.\nThese measurements may appear similar for 5 gear runs so in my mind gear is made in pairs for easy access making shaft outer a size of 21 mm as I found them. last thing I needed was getting perfect d7 set by a captive hex but what was really cool when measuring with 7 dia gears is how easily everything falls into the perfect hole after taking all custom run measures.