FinnoUgric
Plastic
- Joined
- Sep 16, 2019
- Location
- Finland, Länsiuusimaa
I have an import lathe that is not that rigid. Therefore I often have issues with chatter.
I have come across several time on a solution that might medicate some of this chatter problem.
Since chatter is actually a resonance condition and it takes some time to develop. I mean, the chatter does not start right away, it may take a second or two to develop into the disturbing form.
If the spindle speed is varied constantly, this does not allow enough time for the chatter to develop. I have done this manually, since I have a VFD, and it looks like it could do something for the problem.
For this reason I have designed a device that involves a microcontroller (Atmel Atmega32) and some PWM filtering. I am at the moment on making a housing for that thing and then go into practical testing with the lathe.
I have made a video series of this thing in YouTube at Finno Ugric Machining
I have come across several time on a solution that might medicate some of this chatter problem.
Since chatter is actually a resonance condition and it takes some time to develop. I mean, the chatter does not start right away, it may take a second or two to develop into the disturbing form.
If the spindle speed is varied constantly, this does not allow enough time for the chatter to develop. I have done this manually, since I have a VFD, and it looks like it could do something for the problem.
For this reason I have designed a device that involves a microcontroller (Atmel Atmega32) and some PWM filtering. I am at the moment on making a housing for that thing and then go into practical testing with the lathe.
I have made a video series of this thing in YouTube at Finno Ugric Machining