Topics

21

General Mach Discussion / Laser cutting

« on: February 07, 2012, 02:21:41 PM »

Hi Hood, hope you read this first. I need some laser cutting done for a Child Bereavement charity its in the shape of a 6" leaf which I then engrave with the deceased child name on it, its then hung on a tree in a garden of rememberance. Can I ask on Mach Forum if someone can laser cut the outer form for me for payment, I need about 12 a month. If this is against the rules please take the topic off.

22

General Mach Discussion / Connecting a printer

« on: December 16, 2011, 06:14:38 AM »

Hi I'm using a 10 year old Dell computer to run my Mach3 software through a standard printer port (25pin). Before I connect a printer into the system via a usb port can someone advise that this will not effect my connection between the computer and my CNC Mill. E.G Mach will not get confused when I try to print out a copy of any programs. Don't want to upset my set up which is running perfectly.

23

Tangent Corner / Getting the right gear cutter

« on: November 15, 2011, 01:03:30 PM »

Hi I need to buy a gear cutter for cutting a 1.125 diameter gear with a contact DP of 1" and 18 teeth. what cutter do I need is it a 18-20DP but what number cutter do I need? I purchase a cutter thinking it was the correct one only to find the cutter cut teeth to wide. Help please

24

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.

25

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

26

General Mach Discussion / Using the Mach3 screens spindle speed indicator

« on: January 02, 2011, 09:03:31 AM »

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.

27

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

28

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.

29

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?

30

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.