daer21
Plastic
- Joined
- Apr 18, 2012
- Location
- North Carolina, United States
All,
Hello, I'm new to the forum and this is my first post, so if I've missed the answer to my question in the 'search' feature please forgive me. I tried. I've got a Scotchman 315 HFA cold saw. We use it to cut 14 .25" shafts at a time in a diamond pattern held in vice jaws. (first starts cutting one, then two, then three then five then works back down to one) We are having problems with it producing excessive noise. It makes a terrible Rrrrrr Rrrrr Rrrrr noise the entire time it cuts. We put a sound meter to it and its hitting 95-105 db. It also produces severe vibration at times. Sometimes that severe vibration comes and goes, so it will go rrrr rrrr rrr Rrrrr RRRRRR Rrrr rrrr Rrrr RRRRR Rrrr rrrr. We currently use an alternating grind (via the Scotchmen blade ordering guide) and a 220 tooth blade (5.5ish pitch) It is quietest at around 20 RPM. To try to resolve this issue I sent a couple blades back to scotchman for sharpening. Their new blade helps somewhat, but I still get the same Rrrrrr Rrrrr Rrrrr noise. I also tried going to a 180 tooth (4.5 pitch) blade and a 150 tooth blade (4 pitch). The 180 tooth blade was about as quiet at the 220 tooth blade, though I had to run it slower, around 16 rpm. The 150 tooth blade cut quiet as a mouse during break in, but when we tried to speed it up to production speed the machine shook violently was just as loud as the saw has ever been. That was regardless of speed. In order to keep production up we don't want to cut down on the downstroke speed, I need to only change the speed of the blade.
Does anyone have ANY ideas? I'm at my wits end here. I'm not a saw person, so I'm a bit out of my element here. Any help would be appreciated.
Edit: The saw already has a VFD fitted. The first thing I did when I started working on it was slow it down from 47 rpm to 20. 47 RPM was INCREDIBLY loud.
Hello, I'm new to the forum and this is my first post, so if I've missed the answer to my question in the 'search' feature please forgive me. I tried. I've got a Scotchman 315 HFA cold saw. We use it to cut 14 .25" shafts at a time in a diamond pattern held in vice jaws. (first starts cutting one, then two, then three then five then works back down to one) We are having problems with it producing excessive noise. It makes a terrible Rrrrrr Rrrrr Rrrrr noise the entire time it cuts. We put a sound meter to it and its hitting 95-105 db. It also produces severe vibration at times. Sometimes that severe vibration comes and goes, so it will go rrrr rrrr rrr Rrrrr RRRRRR Rrrr rrrr Rrrr RRRRR Rrrr rrrr. We currently use an alternating grind (via the Scotchmen blade ordering guide) and a 220 tooth blade (5.5ish pitch) It is quietest at around 20 RPM. To try to resolve this issue I sent a couple blades back to scotchman for sharpening. Their new blade helps somewhat, but I still get the same Rrrrrr Rrrrr Rrrrr noise. I also tried going to a 180 tooth (4.5 pitch) blade and a 150 tooth blade (4 pitch). The 180 tooth blade was about as quiet at the 220 tooth blade, though I had to run it slower, around 16 rpm. The 150 tooth blade cut quiet as a mouse during break in, but when we tried to speed it up to production speed the machine shook violently was just as loud as the saw has ever been. That was regardless of speed. In order to keep production up we don't want to cut down on the downstroke speed, I need to only change the speed of the blade.
Does anyone have ANY ideas? I'm at my wits end here. I'm not a saw person, so I'm a bit out of my element here. Any help would be appreciated.
Edit: The saw already has a VFD fitted. The first thing I did when I started working on it was slow it down from 47 rpm to 20. 47 RPM was INCREDIBLY loud.