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Posts Made By:
Dirk
Forum:
Rails & Rollers
Thu 25 October 2007, 06:40
Replies:
198
JR's rail grinding skate in a Lasered & Bent format for 4.5" grinders
Views:
251,832
Posted By
Dirk
Gerald, On your above illustration, how would...
Gerald,
On your above illustration, how would you do both sides? It looks like the bearings will hit.
Dirk
Forum:
Construction started, but not cutting yet
Mon 15 October 2007, 08:30
Replies:
111
Table welded, parts shopping going well - Dundee, MI
Views:
82,330
Posted By
Dirk
I too had to give a circular steel saw a try. I...
I too had to give a circular steel saw a try. I got lucky and picked up an Evolution 9" saw in almost new condition for 112.00 plus shipping off Ebay. It is very hard to believe how easily it will...
Forum:
Motors & their mountings
Fri 12 October 2007, 10:29
Replies:
47
Unipolar, Bipolar series, Bipolar parallel, choices for 2phase steppers
Views:
75,996
Posted By
Dirk
I think Orientals rating on their gearboxes are...
I think Orientals rating on their gearboxes are very conservative. To my knowledge there hasn't been a failure since Shopbot started using them. You might also note that these are virtually the same...
Forum:
Motors & their mountings
Fri 12 October 2007, 09:23
Replies:
47
Unipolar, Bipolar series, Bipolar parallel, choices for 2phase steppers
Views:
75,996
Posted By
Dirk
Gerald, I don’t know of a downside using...
Gerald,
I don’t know of a downside using bipolar parallel. The motors run as smooth as series.
I’m not sure I would run the A2A at half coil, as its runs very well running full coil. I think...
Forum:
Construction started, but not cutting yet
Thu 11 October 2007, 22:46
Replies:
20
Many steel parts cut - Curitiba (PR), Brazil
Views:
21,252
Posted By
Dirk
Idorta, which method did you use to grind you...
Idorta,
which method did you use to grind you rails?
Dirk
Forum:
Motors & their mountings
Thu 11 October 2007, 22:31
Replies:
47
Unipolar, Bipolar series, Bipolar parallel, choices for 2phase steppers
Views:
75,996
Posted By
Dirk
I’ve found the A1A motor performs much better...
I’ve found the A1A motor performs much better using a half coil connection. The reason for this is the extremely high inductance of this particular motor. Lower inductance usually means higher...
Forum:
70. Control Systems
Wed 10 October 2007, 06:07
Replies:
116
PMDX parallel port break out card for the MechMate
Views:
143,339
Posted By
Dirk
I use seperate gates also, I thought there might...
I use seperate gates also, I thought there might be something else I haven't caught yet.
Dirk
Forum:
70. Control Systems
Wed 10 October 2007, 04:30
Replies:
116
PMDX parallel port break out card for the MechMate
Views:
143,339
Posted By
Dirk
Gerald I was wondering the problems that...
Gerald
I was wondering the problems that "weren't that good"? Was it simply the electronics was marginal to push 2 drives, or something else. I've never had problems driving several geckos off one...
Forum:
Motors & their mountings
Sun 23 September 2007, 21:24
Replies:
26
Duty Rating stepper motors - setting the drive current
Views:
26,041
Posted By
Dirk
I have found that using a higher current set is...
I have found that using a higher current set is usually detrimental. A higher current set can give you more power, however the over current will create more resonance. Most steppers have a resonance...
Forum:
Archives
Mon 10 September 2007, 05:02
Replies:
14
Gear Math? - forces needed to drive the gantries
Views:
14,095
Posted By
Dirk
bearwen I think gearing your motors will be...
bearwen
I think gearing your motors will be strong enough. I think the smaller rack will give you problems. I would try and stay with 20 pitch rack. 24 pitch rack is 1/4 inch square, compared to 20...
Forum:
Archives
Sat 08 September 2007, 15:32
Replies:
14
Gear Math? - forces needed to drive the gantries
Views:
14,095
Posted By
Dirk
bearwen Looking back over your post I have a...
bearwen
Looking back over your post I have a few suggestions. I'm assuming you're planning on a full size router on a 4X4 router table. I think a 24 pitch rack is to light and small. I have an...
Forum:
Archives
Fri 07 September 2007, 12:59
Replies:
14
Gear Math? - forces needed to drive the gantries
Views:
14,095
Posted By
Dirk
This past summer I was paid to do some motor...
This past summer I was paid to do some motor testing. There were questions as optimum current set, voltage, makes of drivers and also different motors. Because I was being paid I don’t wish to get...
Forum:
Archives
Wed 05 September 2007, 16:03
Replies:
14
Gear Math? - forces needed to drive the gantries
Views:
14,095
Posted By
Dirk
I made an Excel spreadsheet a year or two ago...
I made an Excel spreadsheet a year or two ago that may help. It gives a theoretical cutting force depending on your ratios.
Dirk
Forum:
Construction started, but not cutting yet
Fri 25 May 2007, 17:03
Replies:
33
Newbie has motors turning already - Alpharetta GA
Views:
25,203
Posted By
Dirk
Hey Reza I live in Alpharetta, would love to...
Hey Reza
I live in Alpharetta, would love to get together and see your progress.
Dirk Hazeleger
Showing results 1 to 14 of 14
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