High-Speed Laser Drilling With Air Flow Testing for 0.2-mm Holes
The FlowComp closed-loop hardware and software feature from Prima North America's Laserdyne Systems combines laser drilling with air flow measurement on the company’s 795 and 450 multi-axis laser systems.
The software has application in the manufacture of turbine engine components, which are designed with shaped holes and holes positioned at very shallow angles (10 degrees) to the part surface in order to minimize fuel use, noise and pollution. These holes may be as small as 0.008" (0.2 mm) in diameter, making them challenging to laser drill at very high speed. The tight hole tolerances benefit from the ability to make hole size adjustments smaller than 0.001" (0.025 mm). The software feature, along with Optical Focus Control and other features, ensures that there is minimal laser drilling variability by keeping the focused laser beam diameter, location of drilling and depth of focus required to maintain constant beam quality.
Applying ceramic inserts is not a simple substitution of one cutting tool material for another. There are significant process considerations that shops should examine carefully in order to realize performance and tool life expectations from ceramic inserts. Here's a look at some of the ways they are used.
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.
Fast CNC processing and high-pressure coolant contribute to removing metal at dramatic rates. But what should a shop know about cutting tools in high speed machining?