On Tue, 23 Apr 2019 at 15:16, Leonardo Marsaglia <[email protected]> wrote:
> Well I think gluing a belt that long and wide with a proper jig or the > right equipment could be a pain in the ass so I'm thinking about what > Roland sugested. To machine the rack in wich the belt will be running. That > way I can guarantee zero strecth and perfect engagament. > > I plan to make the racks (I may be can call it linear pulley? or infinite > diameter pulley) out of 6061 aluminum. Then I can set them up like a normal > rack but with the benefits of the servobelt system. I know this is not the > quickest solution but I can machine the racks easily here in the shop so > that's not a big problem. > > I'm also thinking about using the loop servobelt setup wich I think it's > more convenient. Here's a picture of the setup: > > https://static1.squarespace.com/static/51396d24e4b01b4441c64c1f/51396d24e4b01b4441c64c2a/58f69bcff7e0ab3d0693dee9/1492556758738/2016-05-06+09.00.22.jpg > . > The only thing that I need to decide yet is the belt profile for the > system, since I don't need the belts to fit into each other I can make the > racks with any profile. I'm thinking about using HTD or GT2 but that's not > decided yet. > > Since you're going to machine the 'rack', the type of belt is no longer an issue in terms of profile matching. But the advantage of your choice of HTD is that all you'll need is a ball nose cutter to machine a mating profile. I was wondering what you're going to machine, and if it's boards, only boards, and forever boards, then you don't need much of a throat on the machine. (daylight).. Not to be confused with Z travel. So, if the racks are say 80mm above the board, you could link the two drive pinions directly to each other with a 40mm tube. And then drive this. Now you will never have to worry about skewing of the axes, or dual homing. And I would think you'd want at least an 8M belt, 30mm or wider? _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
