Thread: My new 6040 improvement plan.
Hybrid View
-
08-12-2017 #1
There is plenty wrong with the basic machine design.
If you're only doing softer materials with light cuts, it's not a problem, but if you try pushing the spindle, you'll get resonance/poor cuts.
If you have a DTI, try setting it up against the spindle noseat a typical cutting height, then apply some pressure against the spindle and see how much deflection you get. Having three sets of unsupported rails between the bed and the spindle does not produce good rigidity.
Then try testing for backlash. The setup used for the ballscrew endfloat is a couple single row ball bearings (which are usually cheap rubbish), with preload controlled via a single nyloc nut. Then the stepper motor couplers will most likely be cheap aluminium bellow type, which will crack if driven hard.
Plus the general tolerances will be questionable.
And in case you're wondering why I know all this, is I bought a 3040z as the base for a digitizing machine, knowing full well it's shortcomings. It does it's job as digitiser, but I certainly wouldn't want to use it as a router and expect it to produce good quality cuts and not need continual fettling.Avoiding the rubbish customer service from AluminiumWarehouse since July '13.
-
08-12-2017 #2
I understand what you're saying and I agree to a point. Of course it's not going to be as good as a £10k+ machine, but I don't think it's as bad as you say. The newer models are build far better than the older (coupla years only) models. Either way, my only option is to try to improve in its weaknesses as much as I can and learn whilst doing it. It's fun anyway.
Take a look at this video (especially around 8minutes in). He's on my school of thought that the wiring is the main problem now, not the mechanics.
https://youtu.be/fdfJ_WZTxJY
-
08-12-2017 #3
Is it supported or unsupported rails?
If its for a hobby and occasionally using it, there is nothing wrong. / Did i just say that??? / . But if you are trying to make something and sell it... And not to speak of if you are accepting online orders. One needs a totally reliable machine for this. Or it will be pulling hair 24h
-
08-12-2017 #4
The y axis rails are supported, the x axis is 2x20mm unsupported shafts (and ballscrew).
Z axis 2x13mm unsupported shafts with ballscrew.
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
New 6040 owner looking for advice from others with a chinese 6040/3040
By itsmillertime in forum Machine DiscussionReplies: 12Last Post: 14-10-2019, 08:30 AM -
NEW MEMBER: Hi all, Ive got a plan, hopefully its a good one!
By Benja in forum New Member IntroductionsReplies: 6Last Post: 25-06-2016, 12:58 PM -
Mach 3 Driver test results & improvement
By Joe in forum Artsoft Mach (3 & 4)Replies: 15Last Post: 15-12-2013, 11:53 AM -
NEW MEMBER: Designer with a plan looking for advice
By bigstu67 in forum New Member IntroductionsReplies: 2Last Post: 10-10-2012, 06:04 PM -
So... what do you plan to do over the hols?
By irving2008 in forum General DiscussionReplies: 5Last Post: 23-12-2008, 09:03 PM
Bookmarks