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Topics - jimthefish

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31
General Mach Discussion / Doing or done something wrong
« on: April 08, 2010, 10:17:51 AM »
Hi Just finished setting up my Denford Triac, got it running with Mach3. Go a problem which I think is a setting problem. In MDI I ask the maching to move 10mm and it does it in all axis, showing 10mm on the display. Write a program or call up a wizard asking for metric units say to do a 10mm move  and it does not move 10mm it moves a very small amount which shows on the display as 2.4 something but the machine completes the full program. I have asked for metric in the program before starting, what have i done wrong, is the machine confusing metric and imperial when interpreting the programming? Or have I set one of the setting wrong when linking the machine to Mach 3.

32
General Mach Discussion / Triac spindle drive
« on: April 01, 2010, 11:33:14 AM »
Those following my threads know that HOOD has been helping my solve problems replacing my old Denford Triac Mill electronics. I'm on the final bit, the spindle drive. Anyone help, the spindle motor is a Lenze 0.75kw 180v motor and the drive unit is a LYNX 08 all 1990 electronics. The problem is I have purchase a spindle drive card that fits into a system 1 breakout supplied by Roy at DIYCNC there is a 12v relay connection on this board that energises the lynx unit. Unfortunatley Denford electronic diagrams never follow the correct colour coding so I'm struggling to make sense of the wiring. I konw I have to energise the relay then pulse the LYNX system to rotoate the spindle. Can anyone help with how to wire the unit up. As mentioned in previous threads if it aint covered in oil or grease I don't understand how it works. So can you keep it simple so that an old engineer like me understands.

33
General Mach Discussion / stepper drive cards.
« on: March 28, 2010, 08:37:14 AM »
Just fitted some new stepper drives on the X Y Z axis of my Denford Triac. They are the ones with lots of switches to allow you to select the steps range. Problem is I dont know how to start, I understand the Mach 3 tutorial on setting the accuracy but not sure where to start with the switches. The ballscrew pitches are 5mm and the pulley drive to them has a 2.5 to 1 ratio connecting them to the D34 motors. I'm an old engineer who is used to a hand wheel with division on it. How do I start, sorry if I appear a bit thick but I have the steppers working although very slowly on the switch settings the stepper drives came set at. Does the steps range selected affect the speed or am I barking up the wrong tree. I did a quick measure and asked the machine to move 20mm in G00 it moved 25mm very slow. Jim

34
General Mach Discussion / x axis problem
« on: March 27, 2010, 11:59:24 AM »
Hi I have just converted my denford triac, replacing all the electronics and trying to run it on the mach 3 software but I have a problem and need some help. I cannot get the x axis to travel in both directions. If I press plus and minus on the mach screen buttons the axis only goes one way. Have I connected up the wiring wrong, the NEMA 34 motors are 4 wires (found the matching pairs) and I have wired them into the new stepper drives which only require 2 wires. Done the same for the Y and Z which seem to be OK although they move in the opposite direction to the mach direction buttons, looking at the forum posts I can change this in the config on Mach.  Any suggestions would be appreciated.

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