The second half was to implement this type of gearing in OpenSCAD. Learning the name of this gear was half the battle. If you google "helical gears", you will find plenty of sites that demonstrate them being used as a quieter alternative to spur gears for parallel shafts, or with non-intersecting shafts at 90 degrees to each other, but I only found two documents that speak specifically of using helical gears for transmitting torque across arbitrary angles, these documents are here (fig 7) and here. It took me a while to learn this is a helical gear, but a special type of helical gear called "crossed helical gears". What type of gear would I need for this particular case, where there are two non-intersecting and non-parallel shafts, that are not exactly perpendicular? And worm gears operate on non-intersecting shafts at a right angle to each other. Bevel gears operate on intersecting shafts. It transmits torque from the hand crank to the Cone Gear Set, but it does so at a slight angle (as shown by the red lines in the photo below). However, the largest gear in the Cone Gear Set was a very peculiar gear that proved to be much more elusive. There is plenty of information on bevel gears online and Greg Frost's Parametric Involute Bevel and Spur Gear library seems like a good choice for this. The first component I began to explore was the Cone Gear Set, as it seems the most complicated.įor the twenty gears that generate the frequencies, it appears I could use a stack of bevel gears. For the last few weeks, I have been studying The Engineer Guy's video and book about Albert Michelson's Harmonic Analyser with the intent to learn whether it could be made into a 3D printable model in OpenSCAD.Ī big challenge for me was to learn names for the various gears used in that machine so that I could find ways to model them in OpenSCAD.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |