Messages

2101

G-Code, CAD, and CAM discussions / Re: Basic 3D Help

« on: March 31, 2013, 09:28:50 PM »

Looks good Russ,
Have a look at the attached about  stepover values.
Note that most of the info came from a posting on the Mescham site by Robert.
RICH

2102

G-Code, CAD, and CAM discussions / Re: Basic 3D Help

« on: March 31, 2013, 04:39:11 PM »

Hey Russ,
Attached is quicky how to on using ACAD and Meshcam.
RICH
 

2103

General Mach Discussion / Re: 4th axis 3D model surface cutter path

« on: March 31, 2013, 07:29:45 AM »

You will need a Cam program. Vetric, Meshcam, and there are others, just depends on what you want to do and how much your willing to spend
to accomplish what you want to do.

RICH

2104

General Mach Discussion / Re: Cannot do G1with zero feed rate?

« on: March 30, 2013, 08:07:16 AM »

You can create an initialization macro such that mach will always stsrt-up in a preferred state.
Have a look at Appendix "C", page 57, in the Threading on The Lathe write up which can be found in Member's Doc's.

RICH

2105

General Mach Discussion / Re: Great mystery.......

« on: March 28, 2013, 07:19:18 PM »

Like I replied. If experience has shown that there are no problems with the material then continue on as configured.
But, you changed the material and that required additional power to cut the material and by lowering the feedrate you increased the power.

Torque and power decrease as the motor speed increases.
Torque x motor speed = power ......... and power is what you want .....but where the power range  is requires a look at the motor curve.
If you change the material again then suggest some trials on scrap using different feedrates, cutter diameters and depth of cuts.

For G0 moves you are not cutting so the only difference is the weight of the mounted piece which could have an affect on acceleration and velocity
settings, but you should still be below max by say 30% or so from a reliability perspective.

RICH

2106

General Mach Discussion / Re: Great mystery.......

« on: March 28, 2013, 01:34:03 PM »

If the original velocity and accelerations preformed well with no skipping irrelevant of the material or programing then leave them alone.
For actual cutting you adjust the feedrate in the gcode or CAM for the material your working with.

RICH

2107

General Mach Discussion / Re: Newbie with TB6560 1st time testing problems

« on: March 27, 2013, 07:13:57 AM »

One of the problems is the info on the board pinouts is all over the place, wrong, different depending on where you find info, etc. We spent so much time trying to help a young lad get his working.We got one axis to work and then the lad went home and spent hours finding the right combinations, and finaly had it working.
Never......... ever again!

RICH

2108

General Mach Discussion / Re: Step jump problem

« on: March 27, 2013, 06:41:26 AM »

pisagor,
Please do not continue creating different or new threads for your problem as you will get better response if you stay on one thread.
This way folks have some history to relate to.

Sorry, but, I personally no longer address any replies for anyone using the TB 6560 Chinese driver since they are  problematic.
I speak for myself and not others.

I don't know what you are meaning by step jump. The lowest kernal speed is 25000hz.
I assume that you completely removed Mach, reinstalled the demo version, ran the driver test and Mach is functioning.

RICH

2109

General Mach Discussion / Re: 1/2-10 5 start acme screw MAx Speed

« on: March 24, 2013, 07:09:59 AM »

Max speed is depandant on more than just the screw since that is only one component of the system.
There is a nice stepper calculator in Member's Doc's where you can easily evaluate different axis parameters
and see the result.

Thus you need to look at the big picture namely, software, computer, drive / external devices, axis specifics ie; motor, screw, reductions etc, and the machine specifics.

Note that you must compare apples to apples and never apples to oranges even if you find a link.

RICH

2110

General Mach Discussion / Re: Got Probs with threading on the Lathe

« on: March 21, 2013, 06:28:24 AM »

Suggest you make sure that your license is installed.
RICH