Micro-Drills Feature Internal Cooling
Walter USA has expanded its Titex X-treme DM micro-drilling line with tools in the 16×D and 30×D drilling depth ranges.
Walter USA has expanded its Titex X-treme DM micro-drilling line with tools in the 16×D and 30×D drilling depth ranges. Additionally, tools ranging from 2 to 2.95 mm in diameter are available for all depths in the range. The micro-drills feature internal cooling and are said to resist pecking for safer operation. An optimized point geometry with cutting edge preparation and a precisely dimensioned flute geometry are said to improve chip formation and promote process reliability. The polished surface on the flutes also supports chip evacuation.
The tools are designed for drilling holes smaller than 3 mm in diameter for the automotive, aerospace, die and mold, and general metalworking industries. According to Walter, applications include drilled holes for lubrication, cooling and venting, and nozzle bores. The micro-drills can be used with the P, K, M, N and ISO material groups.
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.
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.
Simple process considerations can increase your productivity in milling titanium alloys.