Hi all,
I have a PM-727M and the spindle (or whatever parts attached to it) rattle like crazy even under the lightest loads.
I can hear and don't think I am imagining "rattle" and vibration even when ZERO load.
I do understand, it is a tiny mill and that the cutter, feed rate, RPM, depth, type of cutter in various materials, et al will contribute to and create "chatter".
But this just seems crazy how much noise it makes even under the slightest load.
My concern is there is something wrong with the unit, or not adjusted properly, or whatever, and I don't want it to waer out, break or etc. pre-maturely (or because of my stupidity which I am flush with)
Not sure if related at all, but the drawbar is way off-center, and I can with two fingers grab the draw-bar/spindle shaft and make it "rattle" easily. that seems like something is loose or not adjusted correctly.
I posted a video here, making a 0.020 cut in aluminum with a 3/8" end mill, very slow feed rate - for reference - it would be great to hear from people and tell me I am crazy, paranoid, overly sensitive or whatever even if there is no issue and theirs does the same.
The vibration/rattle seems to always be present, regardless of steel, aluminum, cutter type, depth of cut, feed rate, etc. just more or less loud and obnoxious.
I would like to add and note that I used an app on my phone to measure the vibration of the head (laying phone on top near drawbar) and also on the table, and it doesn't appear that there are huge jumps in the overall vibration of the "whole" - more vibration/rattle "sound" than anything perceived to be significantly vibrating the material, machine etc.
I will also note, that I do NOT notice any significant "rattle" increase, when drilling (all downward pressure) just the normal sort of
'background rattling'.
And that drawbar off-center thing bugs me. you can see it in the video.
Anyway, thanks for any ideas or thoughts.
I have a PM-727M and the spindle (or whatever parts attached to it) rattle like crazy even under the lightest loads.
I can hear and don't think I am imagining "rattle" and vibration even when ZERO load.
I do understand, it is a tiny mill and that the cutter, feed rate, RPM, depth, type of cutter in various materials, et al will contribute to and create "chatter".
But this just seems crazy how much noise it makes even under the slightest load.
My concern is there is something wrong with the unit, or not adjusted properly, or whatever, and I don't want it to waer out, break or etc. pre-maturely (or because of my stupidity which I am flush with)
Not sure if related at all, but the drawbar is way off-center, and I can with two fingers grab the draw-bar/spindle shaft and make it "rattle" easily. that seems like something is loose or not adjusted correctly.
I posted a video here, making a 0.020 cut in aluminum with a 3/8" end mill, very slow feed rate - for reference - it would be great to hear from people and tell me I am crazy, paranoid, overly sensitive or whatever even if there is no issue and theirs does the same.
The vibration/rattle seems to always be present, regardless of steel, aluminum, cutter type, depth of cut, feed rate, etc. just more or less loud and obnoxious.
I would like to add and note that I used an app on my phone to measure the vibration of the head (laying phone on top near drawbar) and also on the table, and it doesn't appear that there are huge jumps in the overall vibration of the "whole" - more vibration/rattle "sound" than anything perceived to be significantly vibrating the material, machine etc.
I will also note, that I do NOT notice any significant "rattle" increase, when drilling (all downward pressure) just the normal sort of
'background rattling'.
And that drawbar off-center thing bugs me. you can see it in the video.
Anyway, thanks for any ideas or thoughts.
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