Big Kaiser's Mini Indexable Boring Bar Meets Medical, Aerospace Needs
The 4-mm Mini indexable boring bar from Big Kaiser is designed to be ideal for small-component machining.
The 4-mm Mini indexable boring bar from Big Kaiser is designed to be ideal for small-component machining, meeting what the company sees as increasing demand in the medical and aerospace industries for boring of small medical implant devices and micro components.
The main advantage of this product, according to Big Kiaser, is the cost savings of replacing just the indexable insert in production versus replacing the entire bar (where the cutting edge is integral to it). The inserts can be exchanged without disturbing the overall geometry of the tool, maintaining consistent cutting results.
The indexable inserts feature sharp cutting edges that help lower cutting forces and vibration. Inserts with cutting geometry specially developed for carbon steel, alloyed steel and aluminum are also available.
To make the transition to hard turning, you'll need to switch from carbide to CBN inserts, but that is easier (and more economical) than you might think. It's making the jump to much higher surface speeds that might scare you off. It needn't. Here's why.
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?