LFV - Low Frequency Vibration

**machining 4 all** · Mar 23, 2021, 06:52 AM

In the drawing I posted earlier, you can see the directions (marked with arrows) where the vibrations can be performed.

**hemmjo** · Mar 23, 2021, 09:23 AM

Ah I see, interesting stuff...

https://www.citizenmachines.com/lfv-technology

**machining 4 all** · Mar 23, 2021, 09:55 AM

Unfortunately the price of this machine model is very high compared to a conventional CNC machine, for example ...

**Elizabeth Greene** · Mar 31, 2021, 12:14 PM

When I do an intermittent cut with carbide I break a lot of tools. Is that a problem with this technology?

**hemmjo** · Mar 31, 2021, 01:23 PM

There are many different grades of carbide. I also have trouble chipping carbide cutters when using my lathe. If I have to remove a lot material, on a lot of parts, I use carbide. Most everything else I use High Speed Steel, I can sharpen it, hone it and get good finish in many situations. I have only needed carbide for one job, so I am no expert in the topic.

I have also used a machine to remove carpet glue from a concrete floor the size of a basket ball court. That machine had carbide cutters. They never chipped. Stump grinders also use carbide and often come into contact with rocks. These two examples have to use a tougher grade of carbide.

This site has a lot of carbide information... https://www.federalcarbide.com/modes...ear_parts.html

**machining 4 all** · Mar 31, 2021, 01:48 PM

In conventional turning, the chip thickness is constant (because the feed is constant). In milling, the chip thickness is variable (concordant or discordant), however the cut is intermittent. In LFV machining, the chip thickness is also variable, due to the empty cut in the tool advance and retraction. So, just choose a tenacious tool (as in milling) and there won't be so many problems with breaks.

**Toolmaker51** · Mar 27, 2022, 11:10 AM

Entire thread thought provoking. I recall a few instances where chip control was an issue, nobody likes birdnests. Usually, considerable increase in feed rate alters it better than RPM. It's still easier generating HSS bit that works, because they cut material, compared to 'pushing' material off as per carbide.

**hemmjo** · Mar 27, 2022, 01:32 PM

Originally Posted by Toolmaker51

Entire thread thought provoking. I recall a few instances where chip control was an issue, nobody likes birdnests. Usually, considerable increase in feed rate alters it better than RPM. It's still easier generating HSS bit that works, because they cut material, compared to 'pushing' material off as per carbide.

Yes indeed, and a good HSS bit puts a lot less stress on both the part and the machine. As with everything there are pros and cons for both.