Bought our first Doosan as we needed a mill turn. Been running Haas for a bunch of years. It's been two months and we are at our wits end with the machine, feeling like we got a lemon. The problem is that when the spindles are synched and turning together, it takes 7 seconds to spin up to max RPM or to spin back down.
This is a problem because the machine's acceleration/deceleration is too slow to keep up as the tool is moving in and out of the part.
To make things worse, the machine does not wait to get up to speed before it even starts cutting. I built a simple program where the machine starts a G96, rapids down in X, then does a feed down in X, and then feeds across in Z. While it's feeding across in Z the spindles are still accelerating well into the cut. I mean like two inches.
Put these two together and I'm cooking inserts and chipping my cut off insert like crazy. Doosan was here and didn't solve it. Said they can't change the acceleration. Ellison (who I bought it through) is giving me terrible service on this. Ellison told me "you just need to use G97 in all your programs." Come on already.
This is my first experience away from Haas and it's nasty. Did I get a lemon? Anyone else have a Doosan with dual spindles who has run into the same issue?
Thanks,
This is a problem because the machine's acceleration/deceleration is too slow to keep up as the tool is moving in and out of the part.
To make things worse, the machine does not wait to get up to speed before it even starts cutting. I built a simple program where the machine starts a G96, rapids down in X, then does a feed down in X, and then feeds across in Z. While it's feeding across in Z the spindles are still accelerating well into the cut. I mean like two inches.
Put these two together and I'm cooking inserts and chipping my cut off insert like crazy. Doosan was here and didn't solve it. Said they can't change the acceleration. Ellison (who I bought it through) is giving me terrible service on this. Ellison told me "you just need to use G97 in all your programs." Come on already.
This is my first experience away from Haas and it's nasty. Did I get a lemon? Anyone else have a Doosan with dual spindles who has run into the same issue?
Thanks,