amaarahsan
Plastic
- Joined
- Sep 20, 2017
I am working on a 75cm (30") bandsaw that has a 1.5mm thick blade with 3mm diamond inserts attached to it. Due to the blade dimensions the gullet is set to move about 5cm in front of the wheels and the wheels do not have any tires. The blade is 100mm (about 4") wide and we cut granite, sandstone and marble with it.
The problem that I am getting is that due to the high cutting forces involved the blade either gets twisted laterally and out of the back roller and two the cut is not always straight and the blade drifts away from a straight line. We tension the blade hydraulically.
During the setup we place the roller guides such that both the side guides and the thrust bearing are in contact with the blade and we do not keep a narrow distance between them.
What I want to know from you guys is
1. Will it cause any improvement if we maintain a slight distance between the blade and the guides during the setup and why?
2. Installing crowned rubber tires, would they be helpful and why?
3. Is it somehow possible to change the direction of the blade if it does drift. Keeping in mind that with our setup we cannot turn the workpiece, in this case very large and heavy rocks ?
Thanks a lot in advance for some advice.
The problem that I am getting is that due to the high cutting forces involved the blade either gets twisted laterally and out of the back roller and two the cut is not always straight and the blade drifts away from a straight line. We tension the blade hydraulically.
During the setup we place the roller guides such that both the side guides and the thrust bearing are in contact with the blade and we do not keep a narrow distance between them.
What I want to know from you guys is
1. Will it cause any improvement if we maintain a slight distance between the blade and the guides during the setup and why?
2. Installing crowned rubber tires, would they be helpful and why?
3. Is it somehow possible to change the direction of the blade if it does drift. Keeping in mind that with our setup we cannot turn the workpiece, in this case very large and heavy rocks ?
Thanks a lot in advance for some advice.