Welcome, Guest. Please login or register.
Did you miss your activation email?
August 01, 2014, 08:51:46 AM

Login with username, password and session length
Search:     Advanced search
* Home Help Search Calendar Links Login Register
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 »
491  Mach Discussion / Works in progress / Re: THE LATHE PROJECT - 2011 on: July 15, 2011, 02:40:49 AM
Scott,

Sorry, you asked about Pro and that was what I was referring to. Thought the "Hobby" version was pretty much finished anyway in terms of concept - it has everything on the main screen.

Dan
492  Mach Discussion / Works in progress / Re: THE LATHE PROJECT - 2011 on: July 14, 2011, 12:29:09 PM
Scott,

I would omit the MDI screen. Don't think a dedicated MDI screen is needed. The MDI is needed both on the setup screen and the run screen.

On the main screen needed also spindle and coolant control buttons as well as tool number and offset DROs - the new DROs Brian has just added. Also, these DRO's are needed on the setup screen. Spindle control is also needed on the setup page, since you touch off on the setup screen.

Dan

493  Mach Discussion / Works in progress / Re: THE LATHE PROJECT - 2011 on: July 10, 2011, 09:43:43 AM
Looks like no one is interested Sad

Dan
494  Mach Discussion / Mach Screens / Re: Arrow Keys Jogging doesn't work with a new screen on: July 04, 2011, 10:17:16 PM
Issue number 2 is resolved - apparently was my fault of some sort. Now seems to work.

Issue number 3 appears to be a touch screen issue - if you statically hold your finger on one spot it just quits after a couple of seconds. Moving the finger around on the button keeps it thinking you're still there. Hope I can find some parameter in the touch screen software to resolve this.

Thanks,
Dan

495  Mach Discussion / Mach Screens / Re: Arrow Keys Jogging doesn't work with a new screen on: July 04, 2011, 01:39:43 AM
Hi Gerry,

Thanks for the tips.

1. Now works. It appears to be the button that is required.
2. Yes. Nothing happens. But put the same screen on this PC and it seems to work... Will go back to the machine PC and see if there was really a problem or it was my fault.
3. Yes, I am positive I am in continuous jog mode. It seems to me like the the touch screen quirk - as if it doesn't like to be held continuously and quits after a couple of seconds. Is it possible? 

Regards,
Dan
496  Mach Discussion / Mach Screens / Arrow Keys Jogging doesn't work with a new screen on: July 03, 2011, 12:46:30 PM
Hi,

I have created a new screen using MachScreen. I took the standard mill screen set and deleted all the pages accept diags and settings. Then I created another page that would be the main page for all stuff. The main screen is designed for a touch screen with and has large buttons.

It seems to work fine except for several things which I can't figure their relation to a specific screen:

1. I define arrow keys to jog from the keyboard, but they just don't work. Simply loading the standard screen fixes it.
2. Some commands don't work from the MDI - G1's work fine while G0s not.
3. I have job buttons on the screen (which is a touch screen), but pressing them the axes would only jog some distance (which is not constant, but very close to such) and then just stop - feels like jogging is set to incremental, while it's not.

Any ideas why would any of these happen?

Thanks,
Dan
497  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: June 17, 2011, 01:05:53 AM
Super precision angular bearings are very expensive. If you say $50 each that doesn't sound like a super precision bearing. So here you go:

http://bearingsdirect.com/

http://www.vxb.com/

http://arceurotrade.co.uk/Catalogue/Bearings/Angular-Contact-Ball-Bearings   (in the UK and doesn't have your size, but otherwise good pricing)

Dan
498  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: June 15, 2011, 02:01:51 PM
Katoh,

If you ask me, 20mm is definitely overkill for this machine. Keep in mind that the ball nut will be huge - the mounting flange being some 50mm in diameter. A 16mm diameter will have plenty strength for this machine. Even a 10mm one will cope well with those loads, but a 16mm one will not even "feel" the them Wink

Dan
499  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: June 14, 2011, 07:28:47 AM
Not quite so. Lead screws can be very accurate. Not sure what are the numbers you measured. It is common to speak of a ball screw in terms of accuracy over a given length. Thus, for instance, a C5 accuracy grade would mean about 0.03mm acceptable error in travel over 300mm. Accuracy grade definition varies from one manufacturer to another, so the above example is not dictated by a standard.

Lead screws can easily hold those accuracies. So, when using ball screws it's not really an accuracy demand. Ball screws allow you to have minimal backlash (practical zero), which is often desired in a CNC application. Also, ball screws run quieter and higher speeds can be achieved without the risk of heating the nut and wearing it. Of course they wear slower. Theoretically you can have a lead screw set up to have zero backlash, but it will hardly last.

Dan

EDIT:

Forgot your lathe was Chinese, so the original screws may have been poor quality and not as accurate Wink
500  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: June 10, 2011, 12:58:41 AM
Isn't it so much rewarding to finally see it in action Smiley

I like the G251 - it almost makes steppers sound like servos. Still not on all speeds though.

Dan
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!