Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains
Tue 19 January 2010, 22:37
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Replies: 37
Views: 47,386
lumberjack jeff - I didn't input any backlash...
lumberjack jeff - I didn't input any backlash into the controller - I just make sure most of my cuts are done same direction, that way the backlash behaves the same for every cut, so say I'd like to...
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Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains
Tue 19 January 2010, 13:17
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Replies: 449
Views: 473,932
would you say plain timing belt & pulley setup...
would you say plain timing belt & pulley setup will do the trick and solve the backlash issues? this is what remains unknown to me, because of all the discussions I already read, I haven't a firm...
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Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains
Tue 19 January 2010, 12:09
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Replies: 37
Views: 47,386
:) nice closure?
Copied from another thread:
. . . . . . .
I have backlash. no lost steps, always manage to get back to the exact same locations, only that there is a 'play'. I grab the gantry in my right...
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Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains
Tue 19 January 2010, 12:09
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Replies: 449
Views: 473,932
:) nice closure?
You must admit it is funny in some way (the shared IP of Jimbo & Chopper). shows enthusiasm :).
Gerald, as probably the person who was involved in every debate on this forum, and quite a few on...
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Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains
Tue 19 January 2010, 08:24
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Replies: 449
Views: 473,932
Is there a 'zero backlash' timing belt&pulley
Chopper (or anyone else who knows)
Is there such a thing as 'zero backlash' timing belt&pulley?
I saw you use 0.2'' pitch, which translates to about 5mm. Is it plain timing belt & pulley? clearly...
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Forum: CNC motion control software
Thu 31 December 2009, 09:05
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Replies: 62
Views: 72,937
EMC limits and homing
Thanks Brad, that was a brilliant idea. geniusity at its best :). really, it didn't occur to me I can do that, but it works great - hardware-wise, the NC connections of my relays function as the home...
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Forum: CNC motion control software
Tue 29 December 2009, 08:02
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Replies: 62
Views: 72,937
EMC homing
Brad, this one is for you:
I use the pmdx 122, how do I make the homing work when all I have is onee pin for all limit switches and home?
11 - start
12 - pause
13 - touchoff plate (auto Z...
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Forum: CNC motion control software
Sun 27 December 2009, 10:48
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Replies: 62
Views: 72,937
EMC slaving
Brad: Thank you for the tip, that is exactly where I am. I've made the motors move, not yet slaved them, using the stepper gantry as a starting point.
Yuri: Man, that is fine you didn't get my...
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Forum: CNC motion control software
Sat 26 December 2009, 22:44
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Replies: 62
Views: 72,937
EMC slave axis
Hello everybody, and merry Christmas.
I guess this question goes to Yuri, but if anyone knows....
Running a wide gantry is done here with two motors on the X (mach users use a as the slaved...
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Forum: 10. Base Table
Sat 24 January 2009, 13:32
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Replies: 32
Views: 45,269
Clearvue holddown
So, if I get it right, J.R. and others say that if you machine large parts, just plugging in some of the suction from a clearvue cyclone (4HP) will suffice as a vacuum holddown (or any other powerful...
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Forum: Graphics & CAD
Fri 22 August 2008, 07:36
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Replies: 115
Views: 138,084
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Forum: 60. Wiring & Cable Management
Mon 21 July 2008, 08:30
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Replies: 221
Views: 223,194
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Forum: 60. Wiring & Cable Management
Sun 20 July 2008, 02:24
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Replies: 221
Views: 223,194
Regarding the pause and resume:
Why seven...
Regarding the pause and resume:
Why seven core (mentioned on page one of this discussion) cable for the pause/resume/E-stop ? if I get it right, a MM builder will only need the 5V, GND E-stop,...
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Forum: Rails & Rollers
Thu 10 July 2008, 16:34
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Replies: 8
Views: 17,258
Thanks Gerald, shimming it is.
I'll use 15...
Thanks Gerald, shimming it is.
I'll use 15 metric. Here in Israel we use metric, although you could find inches for just about anything, but from what I hear, there is a tendency now to go metric...
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Forum: Rails & Rollers
Thu 10 July 2008, 10:08
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Replies: 8
Views: 17,258
Common problems?
Common problems, or is it just me?
Started building my MM, Got the laser parts, beautiful work done on them (only it cost over 1000 USD :rolleyes:), all happy.
I'll build a 6X2.5 meter MM ( I...
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Forum: Rails & Rollers
Mon 30 June 2008, 08:15
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Replies: 39
Views: 43,650
Just watched the Brazil video,
This is one...
Just watched the Brazil video,
This is one sound technique to grind rails. We need some impressions from the cutter, if he could make the measurements in several places along the rail and post it,...
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Forum: 40. Z-Slide
Mon 09 June 2008, 21:07
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Replies: 25
Views: 38,182
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Forum: 40. Z-Slide
Mon 09 June 2008, 13:01
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Replies: 25
Views: 38,182
Possible solution to flex in long Z axis?
Hi all,
Just a thought: Looking at the Z axis assembly, and reading all them posts speaking of the horrible flex induced, I decided to take a llok at the whole setup.
It seems to me that the...
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Forum: Construction started, but not cutting yet
Thu 05 June 2008, 12:36
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Replies: 14
Views: 13,249
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Forum: Construction started, but not cutting yet
Thu 05 June 2008, 08:31
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Replies: 14
Views: 13,249
Hi kim,
thanks for the clarification. This...
Hi kim,
thanks for the clarification. This boils down to the following question:
What if all the parts for the MechMate will be cut and shaped from mild steel??
Surely it take some of the...
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Forum: Construction started, but not cutting yet
Thu 05 June 2008, 07:52
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Replies: 14
Views: 13,249
Steel 300MPa, mild, 25 Rockwell C ...
Hi all,
Many many thanks to you all for the info, especially Gerald. I'm not a fan of forums, only this one really strikes me as a great one. you usually have to go through piles of words before you...
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