![]() ![]() ![]() The laser cut diameter for the guy I use is about 0.1 mm. Other bearing types (teflon?) may be considered later. However a paper spacer most likely will be required to give some bearing clearance. Where disassembly is required M3 bolts will be used to hold the pieces together.īearing surfaces need to be lubricated with wax or silicon spray. The final design will have 1 mm alignment holes and glued in most cases. The thickness need to be at least doubled. A single layer was no really good enough for the SCARA Prototype. The design is built up in layers using 6mm thick MDF. ![]() To calculate the Diamteral Pitch ratio use (57-21)/(60-21). This reduces the size of the gear set to ~75 mm diameter. I also increased the Diametral Pitch to 1.0 and 0.928571429. I am now using 24/18/57 and 18/57 gear ratios. Rather than increase the overall gear set size, I have changed the gear ratios to make the Sun gear larger (and the Planetary gears smaller) without chaning the outer diameter. I want make the elbow as compact as practical but the current Sun gear is too small for the stepper motor hub. (Well I could use VM VirtualBox and Windows with DeltaCAD!) Can't expect everything for free!Īs I have to run DeltaCad under Wine, losing the macro language and the fact it does not support PolyLine (only lwPoyLine), I have to migrate. Other issues are that some of the commands are not functional are rather primitive, "Polyline Equidistant" is an example. If you use CAD all day you will appreciate keyboard short-cuts (avoiding menu mouse movements) and minimal steps. LibreCAD is slower to use as most things need more steps. I should point out that DeltaCAD is not an AutoCAD clone. The DeltraCAD user interface is much better than LibreCAD from the point of view of minimum mouse/hand movements and less steps to do things. I am migrating from DeltaCAD to LibreCAD. ![]()
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