Coolant-Fed Drills Enable Deep Drillling
Cobra Carbide’s Blackmamba series of coolant-fed drills are designed to enable drilling to a depth of eight times the tool diameter.
Cobra Carbide’s Blackmamba series of coolant-fed drills features a flute design and cutting edge geometry that enables drilling to a depth of eight times the tool diameter. The drills are said to feature enhanced self-centering characteristics, optimized chip flow, high cutting rates and high productivity. They also eliminate the pecking cycle, reducing drilling time compared to conventional drilling, the compan says.
Liquid coolant offers advantages unrelated to temperature. Forced air is the fluid of choice in this shop...but even so, conventional coolant can't be eliminated entirely.
The right choices in tooling and technique can optimize the thread turning process.
One of the most common methods of tapping in use today on CNC machines is 'rigid tapping' or 'synchronous feed tapping.' A rigid tapping cycle synchronizes the machine spindle rotation and feed to match a specific thread pitch. Since the feed into the hole is synchronized, in theory a solid holder without any tension-compression can be used.