Marius Gouws wrote:Good Morning Will
I have discovered this by accident when I download the letter block program from somewhere here at the forums. the prog did not want to work the way it was meant to so I change it a bit, and it works fine now. Now I am not a guru, but what it seems to do is that if you have a G807 in the beginning of the your code the machine axis accelerate and de-accelerate smoother, So when I cut real small part , axis 1 and 2 does not do that sudden movements. Now if you put in a G805 or smaller then it will have an revers affect. The bigger the last digit the slower the acceleration. Maybe someone from Thermwood can tell you more, maybe I am wrong. Like I said in my previous post our bearing on the table is stuffed, and I found by inserting a G80# I get a better cut when cutting small part. If I do not, it looks like I have tried to cut the part myself with a jiggsaw. We are still waiting for the bearing from our dealers in Johannesburg for a couple of months now.
I would like to explain the G800-G809 macros in alittle more detail. The machine has a set value for acceleration and deceleration that it uses by default. The G800 will run at this rate, so if you have a G800 in the code, the machine is "ramping up to speed and ramping down to a stop" at it's default value. Now, the next macro, the G801 will run at 90% of this default value. The G802 will run at 80% of this value, and the rest follow this pattern. so when you put a G807 at the beginning of your code, you are telling the machine to accelerate and deccelerate at 30% of it's default value. This means that if the default value is 10 inches per second squared, you're machine would be accelerating at 3 inches per second squared as long as the G807 is active.