I was wondering:
I've been working on the learning curve of using High Speed Machining with my Tormach 770 mill. Right now I can finish most parts projects only slightly faster using HSM as opposed to using the conventional machining method I was using before. This is mainly due to the power limitations of the 770 hobby mill.
So I was wondering if changing the drive belt to the larger-lower RPM pulley would offer any benefit in terms of speed when using High-Speed-Machining methods? If so, what would be the difference in torque value from one pulley to the other?
Using HSM with my drive belt being driven by the 10000 RPM pulley; while working with metals other than aluminum, I find I have to reduce my software calculated WOC's and myDOC's by at least a third in order to keep from straining my machine or bogging down to a stand still or a tool breakage. I've checked my users manual but can find no reference on wether there are any torque changes if one changes from one drive pulley to the other.
If the larger pulley gives more torque and the maximum RPM given by the larger pulley is close to the "Speeds" calculated by my HSMAdvisor software, might this be the way to go rather than having to reduce my WOC,s and DOC,s to keep from bogging down or slowing down the overall time savings that HSM was designed to overcome?
If higher torque values allows me to make deeper cuts, both axial and radial while maintaining the software's calculated spindle speeds, in my mind, this should speed my machining times up substantially. The problem is, I don't know if torque values change when going from one drive pulley to the other.
MetalShavings