I have a new customer that will be loading me up with various different shaft collars. AL 2024 ,1215 steel, and 303 SS.
My Brown and Sharpe screw machines were made to run HSS at 118* points. I have these parts to machine and it is really just drilling holes all day long. the 1215 I would normally use a 118* HssCo. I am looking at the different coatings and combinations of drills and I am wondering if there is something better worth trying.
I believe carbide tipped drills would be best for my machines... https://www.mscdirect.com/product/details/71213326
for the steel and 303.
I wanted to try this cobalt/tin drill https://www.mscdirect.com/product/details/41857392
I do not believe solid carbide would be wise for my machines. They do have some with 118* points though.
I can run carbide cutoff blades on these jobs due to them not going to the center of the part. I can run the higher speeds needed for carbide if all the tools I am using are carbide (front/back x slide, turret). These parts are perfect to try and use some newer improved drills and try to get some better cycle times.
Solid carbide is usually a no no because they can chatter easily and shatter.
I usually sharpen my drills and re use them quite a bit. Once any coatings get ground off the cutting edge they are essentially uncoated hss. Do they last significantly longer with the coating that I wont have to worry about sharpening them often? I am reaming a lot of these holes too, so I can let the drill wear out a little more than normal.
Any advice is greatly appreciated.
My Brown and Sharpe screw machines were made to run HSS at 118* points. I have these parts to machine and it is really just drilling holes all day long. the 1215 I would normally use a 118* HssCo. I am looking at the different coatings and combinations of drills and I am wondering if there is something better worth trying.
I believe carbide tipped drills would be best for my machines... https://www.mscdirect.com/product/details/71213326
for the steel and 303.
I wanted to try this cobalt/tin drill https://www.mscdirect.com/product/details/41857392
I do not believe solid carbide would be wise for my machines. They do have some with 118* points though.
I can run carbide cutoff blades on these jobs due to them not going to the center of the part. I can run the higher speeds needed for carbide if all the tools I am using are carbide (front/back x slide, turret). These parts are perfect to try and use some newer improved drills and try to get some better cycle times.
Solid carbide is usually a no no because they can chatter easily and shatter.
I usually sharpen my drills and re use them quite a bit. Once any coatings get ground off the cutting edge they are essentially uncoated hss. Do they last significantly longer with the coating that I wont have to worry about sharpening them often? I am reaming a lot of these holes too, so I can let the drill wear out a little more than normal.
Any advice is greatly appreciated.