[acannell]

its a Miyano MSV21

i might be able to get it for around $5500 shipped

seems like alot of chatter for 0.003" chipload in cold rolled steel..chatter doesnt seem to start until it plunges another 0.125" deep seems like there is already 0.125" pass done before video starts. skip to 1:26 in the video to see when the chatter starts.

but im not that experienced with this sort of cut....

the video description is:

"This is a test cut on a Miyano MSV-21 CNC mill cut cold rolled steel with a .499 4 flute carbide end at 1,500 rpm, taking 4 .125 deep cuts at 12 IPM and leaving .005 on the side walls. The finish cut was at 6 IPM. It was programmed to cut a 4" X 4" square. The block measured 4.001 in both the X and Y directions. If the cut had been .500 the machine would have cut it right on size."

the video shows two types of cuts, as described. i watched the whole video and its basically the same chatter throughout the 0.125" depth cut, but when it gets to the finish cut its very quiet (just sort of intermittent chunk sounds..im guessing thats the much larger chips hitting the enclosure)

does this seem good?

[DareBee]

I dont notice any chatter but I think it needs a new spindle/bearings.

SFM is way low and not enough chip load (that is only .002).
AT least 3000RPM at 30-40 IPM would work better

[acannell]

SFM is way low and not enough chip load (that is only .002).
AT least 3000RPM at 30-40 IPM would work better

does this chatter seem appropriate then?

can someone with a brand new haas take the same cut in the same material with the same cutter and upload a video of it so i can hear the chatter plzzzz? hahhahahah

[DareBee]

I dont notice any chatter but I think it needs a new spindle/bearings.

Read

[acannell]

skip to 1:26 in the video to see when the chatter starts.

Read

[keebler303]

Read

He obviously heard the noise and told you he thinks the spindle needs new bearings. He wasn't being an @ss, just trying to make you realize what he is saying. Do you realize that rebuilding the spindle will cost about as much as you are paying for the whole machine?

[acannell]

He obviously heard the noise and told you he thinks the spindle needs new bearings. He wasn't being an @ss, just trying to make you realize what he is saying. Do you realize that rebuilding the spindle will cost about as much as you are paying for the whole machine?

gross.