Machinist Apprentice | Haas Minimill Pausing With Large Program | Day 165


Finished up the first operation of the first set of parts. 

Unfortunately, I made a stupid mistake yesterday when trying to use the tool wear compensation in Fusion360. I accidentally had the toolpath generate on the centerline of the contour rather than having the cutter's edge follow the wall.

I got to the shop this morning to check on an overnight run, only to find the Haas minimill paused at a single line of code with the spindle on and coolant running. I have this happen several times in the past, and I keep forgetting to save the code that caused it.

I'm not sure what I'm missing, but I hypothesize that the machine is getting overwhelmed by the information and pauses. When I came in this morning, it looked like someone paused the machine rather with a feed hold, but nothing happens when trying to hit cycle start.

It ran through the first 3/4" of the program just fine, and only when the machine raised the tool in the z height did this happen. It seems pretty consistent with the previous times it's happened.

I asked this question on a public forum for Fusion360 and got one person responding with a very probable solution. He said that he had similar past issues where the power would fluctuate and cause the machine to stall for a second, just enough to pause the machine where it is without moving forward or corrupting the file. My thought is that since it's such a large file, the machine has to read through it all at such a pace that it would require less of a power surge the larger the code. 

As it happens, this file had several thousand lines with about a 3 hour run time.