So forever I have been trying to get my cnc machine working. I am using mach 3. I have tried setting up the spped of the movement of the access of anywhere between 800 and 1200mm per minute. I have also made my acceloration between 5 and 10% the speed. When I manually tell the x or the x or the z to move it all seems fine. But when I run a small program with lots of moves the machines has lots of problems and I loose steps and the machine seems to shutter. I am running the steppers at 1/2 step and have the step and dir pulse set at 15 each. I have 3 power supplies,1 for each y and 1 total for the x and z. I also have a separate 24 volt one for the Break out board, I do notice that the voltage starts to go down on the powere supples as they go on. Any ideas ?

1/2 step is not good for smooth movement - it is more usual to use 1/8 or 1/10.

Could you post more details of your machine and controller - a couple of pictures would be good.

Tweakie.

It is a custom machine.  I built from scratch.  It has 425oz motors and 4 controller that are set at 4.2amp.  It has one of those inexpensive break out boards that attached to my parallel port.  I am running win 7 32 bit.

But when I run a small program with lots of moves the machines has lots of problems and I loose steps and the machine seems to shutter.

Post the following:
1. Stepper motor information - from who, model number,  motor curve, etc
2. Drive information
3. Screw information
3. Power supply information
4. XMl file you are currently using
5. The program you are using ( complete not snippet of code )

The above information will save us a  lot of time. I'll refrain from making  comments until the above is posted.

RICH

Motor is Act motor model 23HS2442

Driver is HY-DIV268N-5A.  It is set at 1/2 step and 4.2A

screw is 8mm screw.  one turn moves it 8mm
https://openbuildspartstore.com/8mm-metric-acme-lead-screw/

Power supplies are DROK Adjustable DC Power Voltage Converter AC 110V-220V to DC 0-48V Module 48V 10A
https://www.amazon.com/gp/product/B01MV4249T/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

XML FILE - I have no idea on what you mean by this

and finally the code

XML FILE - I have no idea on what you mean by this

The profile you use or created to run Mach3 is located in the Mach3 directory on your computer
and is saved as an XML document. It contains all the settings etc. you defined for the machine.
Make a copy of that file and rename it to have a unique name ie; NEED HELP and post it.

RICH

I believe this is it.

Thanks Steven

has one of those inexpensive break out boards

Post info on the break out board

Can you post a link to where you purchased the stepper motors from.
The ACT company does not  list that particular model stepper.

RICH