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Forum: Troubleshooting Fri 09 November 2012, 08:19
Replies: 85
Views: 79,111
Posted By Surfcnc
Apologies the numbers are wrong that I gave you...

Apologies the numbers are wrong that I gave you for your DP20 rack and pinions.Went down the wrong path there not paying proper attention and specified the steps for module one rack and 20 tooth...
Forum: Troubleshooting Fri 09 November 2012, 06:41
Replies: 85
Views: 79,111
Posted By Surfcnc
Keep up the good work. OK try 31.831 steps...

Keep up the good work.

OK try 31.831 steps per mm. Sorry about the typo adding to the chaos.
We use Gerald's gear steps calculator, it is an excel spreadsheet to calculate the steps per mm.
It...
Forum: Troubleshooting Fri 09 November 2012, 06:24
Replies: 85
Views: 79,111
Posted By Surfcnc
Typo, thanks viz Ross

Typo, thanks viz

Ross
Forum: Troubleshooting Fri 09 November 2012, 06:21
Replies: 85
Views: 79,111
Posted By Surfcnc
Also thinking out loud... The mechanical...

Also thinking out loud...

The mechanical slop in the z axis may be from errors in the Z slide grinding.
It may be something as simple as being tight at one part of the z axis stroke and loose at...
Forum: Troubleshooting Fri 09 November 2012, 06:07
Replies: 85
Views: 79,111
Posted By Surfcnc
8 microstep = 25.465 ? Ross

8 microstep = 25.465 ?

Ross
Forum: Troubleshooting Fri 09 November 2012, 06:04
Replies: 85
Views: 79,111
Posted By Surfcnc
Back to basics, are my assumptions correct here...

Back to basics, are my assumptions correct here (from previous posts)

1. 1.8 degree 200 step per revolution stepper motors
2. 20 tooth module 1 pinions
3. 10 microstep setting on you MSD556...
Forum: Troubleshooting Fri 09 November 2012, 00:41
Replies: 85
Views: 79,111
Posted By Surfcnc
Ok it's got to be annoying by now, however ...

Ok it's got to be annoying by now, however

1. Ignore any "motor spec" and just pull up the pinions to the "machine spec". Replace the motors with the right motors if or when they fail.

2....
Forum: Troubleshooting Wed 07 November 2012, 05:56
Replies: 85
Views: 79,111
Posted By Surfcnc
SOSx Not in the least bit surprised the...

SOSx

Not in the least bit surprised the telflon washers improved the machine over using a steel washer.
How the original builder could seize up a joint that is supposed to move is beyond me :(....
Forum: Troubleshooting Fri 02 November 2012, 16:56
Replies: 85
Views: 79,111
Posted By Surfcnc
Washers can be cut from 3mm Teflon sheet with a...

Washers can be cut from 3mm Teflon sheet with a hole saw.
Your machine will do a good enough job cutting them as well at this point.

Are you checking for slop with the motors turned on?
The...
Forum: Troubleshooting Fri 02 November 2012, 09:46
Replies: 85
Views: 79,111
Posted By Surfcnc
They need to glide smoothly and at the same time...

They need to glide smoothly and at the same time be free of sideways slop.
This keeps the pinion running true in the rack and also properly engaged.
Ross
Forum: Troubleshooting Fri 02 November 2012, 09:19
Replies: 85
Views: 79,111
Posted By Surfcnc
Also check the motor swing plate on the side...

Also check the motor swing plate on the side opposite the pivot point that it has not run out of travel.
In some circumstances the bolt can bottom out on the end of the slot in the plate and hold...
Forum: Troubleshooting Fri 02 November 2012, 08:43
Replies: 85
Views: 79,111
Posted By Surfcnc
Hi Brad Take a look at the springs on the y...

Hi Brad

Take a look at the springs on the y car motor and the Z axis in the earlier pics.
They are long and not very taunt, you probably picked one of the issues there with the Y car moving...
Forum: Troubleshooting Wed 31 October 2012, 06:21
Replies: 85
Views: 79,111
Posted By Surfcnc
Nooooo !! Such a shame, I can see nearly...

Nooooo !!

Such a shame, I can see nearly every error one could make in those shots.
The beauty of the Mechmate Design is that the rails can be remade fairly cheaply as angle is inexpensive....
Showing results 1 to 13 of 13

 
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