On Tuesday 27 October 2015 11:17:18 andy pugh wrote: > Does anyone know a cost-effective source of spiral spring covers? > > I have just been quoted £125 each for a pair of spiral spring > leadscrew covers for my lathe (£318 delivered in VAT) by Beakbane. DQR > didn't even bother to reply. > Given that the ballscrew + double ballnut came in at £170 this seems > somewhat excessive. Does anyone know where I can find some that I am > prepared to afford?
I ran into that same problem Andy, and at one point considered to the point of tearing a cheap tape measure down to get its rewind spring, but could not figure out a way to rivet a piece of it so it would automaticly and evenly expand and contract. Every way I came up with to fasten it, also restricted the ability to assume a suitably relaxed end to end tension. That, combined with losing an inch on the right end travel, turned it into a "let the felts in ends of the nut" handle/wipe the debris from the screw. Thats worked surprisingly well so far. I can't say the same for my efforts to put felt seals on the rear of the X carriage, I keep running into the brass plate I extended forward from the motor mount to cover the rear of the x slider, and my motor folds it up like so much TP. So there is a sound of a bit of stuff in the x nut. But the motor has the power to mash it into the screw so its still working well enough. That was an 8mm screw I got some of from one of our PMDX people, and the nuts, while flangeless, also did not have any felt wipers. Hence I tried to seal the top of that gap at the rear. My x motor is on the rear of the carriage, which adds zero weight to the front V-way, demanding a tight gib strip. I should someday, (when I find my missing round tuit) fabricate another nut holder with some old felt hat for wipers, like I did on the toy mill, but thats also a source of some give in the mill, requiring a huge preload tension to crush the felt, and the lathe is a lot more crowded than the toy mill is at its worst. So the nut in the lathe was smashed into a cage, that is pulled back closed over it by the cages mounting screws. The cage was made about a thou short of the nuts length & chamfered & stretched that much to get it trapped length ways. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
