Note: The 22/29 stub pitch has the pitch diameter of a 22 DP gear (N/DP). 0785" wires for checking over teeth.įace Width. 004" Backlashĭiameter over wires includes allowance. The technical description is as follows:įellows 22/29 Stub Pitch, 20 Deg PA.
For some reason, they decided to use 20 degree pressure angle, 22 pitch gears, but with a gear tooth depth corresponding to 29 pitch. Is there any chance you would be willing to add something to deal with gears where the depth doesn't match the diametral pitch? I would be happy to make a PayPal donation to help this along! My specific application is Hardinge change gears. I'm impressed! Making each tooth a group is an interesting idea! Outside diameter (at the gear tips) is actually larger. Pitch radius is about the midpoint on the gear teeth. Beveled helicals are not very precise (yet), so getting them to line up with mating gears may not work. You can easily add circles and use push/pull tool to add hub/rim details. The core is a solid cylinder/cone, in a separate group, with a construction line on the center axis. Helical direction is determined by +/- angles. gear properties/specs dialog via context menuĬoming soon: Video of gears in action, using SketchyPhysics web dialog UI (additional input params and auto-calculations) additional gear styles (rack, worm, and internal ring) This was written using Sketchup8 and has not been tested with previous versions of SU.Īlready planned improvements for next version: It's far from "finished", but as my first attempt at a plugin, it's pretty cool, and it works. It is pretty fast and parameters allow for a huge range of custom dimensions. This first version of SPGears will create spur, helical, bevel, and beveled helical gears with involute tooth profiles. This tool works well for drawing gears in static model too! ** Note: Gears are designed to work with SP, but the tool does not require SP to work in static models. For SP users, gears are 'ready-made' objects, so you only need to add a hinge or motor joint and you're done. This is a really great tool for creating custom gears in both static and SketchyPhysics (SP) models. # Description : This file draws various types of gears with involute # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A # OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE
GEAR TEMPLATE GENERATOR FOR SKETCHUP SOFTWARE
# THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS # above copyright notice appear in all copies. # any purpose and without fee is hereby granted, provided that the # Permission to use, copy, modify, and distribute this software for
GEAR TEMPLATE GENERATOR FOR SKETCHUP UPDATE
Probably not a bad thing, especially since SU 2015 and the unofficial SP v3.5 update were recently released. I was hoping it would only need some tweaks, but to fix the accuracy problems it's turning into a ground-up rewrite. 2014, I am actively (though slowly) working on version 2. Not smooth - Sketchup does not use "true" arcsĪs of Nov.Not completely accurate - check fit (in SketchUp) before you print!.So far, these are known issues with the plug-in:
However, I appreciate your feedback regarding 3D printing issues and it's all going into the bucket for the (mythical see "unicorn farting rainbows") version 2. This was never intended for use outside of drawn models. SPGears_screenshot.png 3D PRINTERS - USE AT YOUR OWN RISK
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