Carmex's Diamond Turning Inserts Handle Difficult Alloys and Composites
Carmex Precision Tools introduces diamond turning inserts that are designed to enable users to machine hard materials faster than grinding or ceramics.
Carmex Precision Tools has introduced diamond turning inserts designed to enable users to machine hard materials faster than with grinding or ceramic tools. These inserts are available with either one or two cutting edges.
The polycrystalline diamond (PCD) inserts are said to excel when machining nonferrous materials such as high-silicon aluminum, copper and brass alloys, magnesium, carbon fiber reinforced plastics (CFRPs), and composites.
The chemical vapor deposition (CVD) inserts are designed for machining aluminum and magnesium alloys, high-silicon aluminum, precious metal alloys, plastics with abrasive fillers, tungsten carbide, and ceramic green compacts. A chipbreaker reduces heat generation and energy consumption, the company says.
The polycrystalline cubic boron nitride (PCBN) inserts provide good surface finish in materials like hardened and heat-treated steels up to 72 HRC, high speed steel (HSS), high alloyed steels hardened to 45 HRC, nickel-based superalloys, gray cast iron, ductile steel and graphite.
Cutting holes by interpolating a face milling cutter may be a better process choice for many rough and even finish boring operations. Software improvements and better cutter designs allow expanding use of the versatile face mill for hole making.
With macros and canned cycles resident in the CNC on most contemporary turning centers, single point turning of OD threads can seem like almost a default process decision. However, for numerous applications, OD thread rolling has inherent advantages as an alternative to cutting threads.
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.