 Spiral problem after changing inserts in lathe. | |
Sorry if I am posting this in the wrong section - there are so many to choose from and I don't find one specific to my machine. We are machining cylindrical steel parts on larger Nakamura Tome lathes. We are having an issue that when we do an insert change, the next xx many parts will have an unacceptable spiral look to them - usually this may only last 5 pieces but sometimes as many as 20. It then appears that the insert dulls enough to where this goes away. I don't really know that the sharpness of the new insert is causing it - just making an assumption. Our parts aren't cheap and we would really like to eliminate this problem. Is this a common thing or something unique to our situation? The steel is not very hard (don't have the actual specifications but I know it's fairly soft) and I knwo that we are using Kyocera carbide inserts.
Any ideas or recomendations would be greatly appreciated.
Thanks in advance for your time |