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Topics - jimthefish

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21
General Mach Discussion / Mach3 pendant
« on: October 30, 2011, 02:54:05 PM »
Hi Has anyone used this pendant to control Mach 3 on a cnc milling machine
http://www.ebay.co.uk/itm/230683867676?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
I'm thinking of getting one so I dont need my keyboard and/or mouse near the cnc maching whilst I'm setting up. I watched the vidoe on youtube showing it working but it seems to good to be true for the price.

22
General Mach Discussion / Problems with G20 G21
« on: January 18, 2011, 05:10:43 AM »
Hi, I THINK I set up my machine OK, However since I set the machine up some 4 weeks ago I have been using metric units on all the jobs I have done. Yesterday I did some model steam engines parts in imperial sizes. (no problem). Started the machine up this morning and got a reading the axis motor speeds were to fast. Looked on the screen for motor and the graph was off the screen so re tuned them bak all seems OK but the rapid G00 is much faster than before. Now I cannot get the machine to go back to metric units. Loaded a program with G21 on the first line, run the program and the machine moved 5 inch not 5mm. Any suggestions. Got a feeling I set the machine in the wrong units when I first set it up. Just for reference I have restarted Mach3 several times but it still moves in Imperial. looked on the general config and the lock DRO is not ticked.
Jim

23
Hi, I woder if anyone can help me set Mach 3 screen to show my actual spindle speed. I have set the spindle up using the config boxes and have estimated the speed, It seems about right as I haven't burnt out any cutters yet. When I converted the Denford Triac there was a Hall proximity sensor that detected the spindle position for the tool changer. I have got rid of the toolchanger so this sensor is redundant. I have checked this sensor and when I rotate the spindle pass the sensor I get a 5v on and off signal. Can I use this to tell mach 3 the actual spindle revs only I havent got a clue what to connect to what. I have spare input/outputs on my breakout board but not sure how the signal is then interpreted by Mach 3.

24
General Mach Discussion / Jogging off the stops
« on: December 30, 2010, 03:20:02 AM »
Hi, my Mach3 crashed last week, I reprogrammed in all the config and got it all back to normal. However when I hit the stops I can't get the axis to jog off the stop. I'm sure there was a tick box to allow you to jog off the stop but cant remember how I did it. Can anyone JOG my memory

25
General Mach Discussion / Spindle speed readout
« on: May 08, 2010, 08:10:11 AM »
Hi Its me again, those following my threads know I have converted a Denford Triac cnc mill to run on Mach 3. (done this with lots of help from HOOD) Well getting a bit to big for my boots now, I want to be able to read the actual spindle speed on Mach. Denford have a proximity sensor already fitted to the spndle, its one of those round sensord with adjustable thread to set it. Can I use this unit connected to one of the input pins on my breakout board or do I need some other connections. Remember I'm a plonker when it come to electronics, its all like magic to me.

26
General Mach Discussion / Jogging keys
« on: April 27, 2010, 03:53:02 PM »
Hi, can you tell me how to asssign the Z axis movements so I can use the keyboard. At present I can jog the  X and Y axis with either the arrox keys on the keyboard or click the mouse on the on screen jog buttons. However the Z only moves with the on screen jog buttons activated by the mouse. Can I assign the page up page down for the Z axis?

27
General Mach Discussion / Spindle drive problems.
« on: April 23, 2010, 02:19:22 PM »
Those who have been following my trial and tribulation converting my Denford Triac to run with Mach 3. Got it all working except the spindle. I'm using a spindle drive card supplied by DIYCNC and have wired it up to the LYNX spindle drive system on the Machine. I have check to make sure the LYNX internal relay comes in, IT DOES. However cant get the spindle to rotate, I don't seem to have a signal out from the OUT and 0v pins. Should I have a low voltage or a pulse to control the speed. there is a 12v connector on the DIYCNC spindle card do I need a connection to this to get a voltage or am I wrong. HELP please.

28
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.

29
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.

30
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

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