By jamesmech
October 24, 2016, 11:44 am
Drilling!
Hi, I downloaded the hsmadvisor and am playing with it now. I would like to drill an 8mm hole 15mm deep into C45 steel. I can run my spindle on my milling machine down to minimum 10k in order to still get good torque. I can't see how to use the advisor to give me drilling info... Please could you tell me how or is this only available in the paid for version? Is this going to be a feasable operation? thanks! james
Eldar Gerfanov (Admin)
Hi, All options are available in trial mode. With a coated carbide drill it will only take you to 5300 RPM. You could try that. If you have a HSS drill, I can promise you you will melt it in a second. I am sorry, but even with carbide you might not be able to drill steel that fast.
jamesmech
Hi Eldar, 5300rpm is below my stall speed, no torque in that area. I have done some experiments already, not good results. The tools really don't like it. I think you might be right, no tricks I can think of here. Walter titex dc170 is a possible tool choice but they are exensive and I don't have through spindle coolant to make it sensible. Drilling holes is not looking good in this material at high spindle speeds... Thanks!
Boyan
Any high speed spindle that takes 8mm bit will run happily at 3000rpm usable minimal speed. It will be scratching, right, but will work. Quite possibly custom geometry like split center drill bit will help
jamesmech
Many thanks for the suggestion! I am not convinced but for sure I will experiment further and let you know what happens. Spindle is mechatron ATC-11045-24.... cheers, james