Missed the deadline on continuing my previous "New Lathe" thread by a couple of hours a few days ago. I decided to start another one, but I can no longer call it "New" I feel.
It appears I have fixed the problem with not being able to connect. Strangly it seemed like it was forums that caused the most problem. Whirlpool was fine, but I have been having issues with my Netgear Nas and trying to fix these via the Netgear forum. This forum was just as bad. All 3 forums run on different apps. By the way, is anyone interested in buying a cheap Nas. Not very old. :D I won't say anymore.
Continuing on from Joe's thread VFD for multi speed 3-phase motors where I mentioned I was going to reconnect the other 3 wires from my lathe motor to the electrical box so it could be switched between Delta and Star (YY) and move the motor fan cover forward on the motor to allow more room behind it for motor adjustment.
I tried to reconnect the wires today, but found that I had already done it.:rolleyes: I rewired the connections for Star and turned the motor on. At this time the belts were off. The motor worked.
I then attacked the fan cover. I cut 10mm off the edge of it and extended the slots lengthways. Working with the motor is very difficult and tiring. There is limited room, the motor (7.5Hp) is heavy and the space inside the casting is tight. I finally got it back together and refitted the belts. The first thing I did was to try the motor again. I had it set to 50Hz from the previous time. The lathe ran straight up to 1700rpm and then the tacho started losing the plot for some reason. It did get up to full speed tho so this lathe is running normally connected in Star. Who knows how much power it has tho.
I now need to adjust the motor position and belt tension.
Pulley Alignment 2.jpg
This shot shows that the alignment of the pulleys is not straight forward. A straight edge has to be spaced out from one pulley and the the distance measured to the other pulley. about 4 hands would be useful here. I am still wondering how to set both pulleys parallel to each other. More measurements from each side I guess. Pretty fiddley.
Motor Mount Plate 2.jpg
This picture shows how the motor adjustment plate sits on studs which pass thru slots in the plate. There are 2 identical studs on the other side and the plate has slots there as well. This means the plate can move around quite a lot. There are nuts top and bottom of the slot. The plate really needs to be level when tightened because of this.
Dean
Attached Images
Read the full thread at metalworkforums.com...
It appears I have fixed the problem with not being able to connect. Strangly it seemed like it was forums that caused the most problem. Whirlpool was fine, but I have been having issues with my Netgear Nas and trying to fix these via the Netgear forum. This forum was just as bad. All 3 forums run on different apps. By the way, is anyone interested in buying a cheap Nas. Not very old. :D I won't say anymore.
Continuing on from Joe's thread VFD for multi speed 3-phase motors where I mentioned I was going to reconnect the other 3 wires from my lathe motor to the electrical box so it could be switched between Delta and Star (YY) and move the motor fan cover forward on the motor to allow more room behind it for motor adjustment.
I tried to reconnect the wires today, but found that I had already done it.:rolleyes: I rewired the connections for Star and turned the motor on. At this time the belts were off. The motor worked.
I then attacked the fan cover. I cut 10mm off the edge of it and extended the slots lengthways. Working with the motor is very difficult and tiring. There is limited room, the motor (7.5Hp) is heavy and the space inside the casting is tight. I finally got it back together and refitted the belts. The first thing I did was to try the motor again. I had it set to 50Hz from the previous time. The lathe ran straight up to 1700rpm and then the tacho started losing the plot for some reason. It did get up to full speed tho so this lathe is running normally connected in Star. Who knows how much power it has tho.
I now need to adjust the motor position and belt tension.
Pulley Alignment 2.jpg
This shot shows that the alignment of the pulleys is not straight forward. A straight edge has to be spaced out from one pulley and the the distance measured to the other pulley. about 4 hands would be useful here. I am still wondering how to set both pulleys parallel to each other. More measurements from each side I guess. Pretty fiddley.
Motor Mount Plate 2.jpg
This picture shows how the motor adjustment plate sits on studs which pass thru slots in the plate. There are 2 identical studs on the other side and the plate has slots there as well. This means the plate can move around quite a lot. There are nuts top and bottom of the slot. The plate really needs to be level when tightened because of this.
Dean
Attached Images
Pulley Alignment 2.jpg (54.9 KB)
Read the full thread at metalworkforums.com...
My Lathe
0 commentaires:
Enregistrer un commentaire