Allied Machine's T-A Pro Drills Improves Holemaking
Allied Machine recently announced the T-A Pro spade drilling insert as a new high performance go-to for general purpose holemaking.
Allied Machine and Engineering’s high-penetration drilling system, the T-A Pro is designed to heighten performance in its “go-to” solution for general purpose holemaking.
The drill combines material-specific insert geometries, a redesigned drill body and a proprietary coolant-through system intended to allow penetration rates the company says are nearly 30% faster than other high-performance drills. Coolant outlets are designed to direct maximum flow to the cutting edge, providing quick heat extraction even at significantly higher speeds. Material-specific insert geometries produce quality chip formation, while the drill body incorporates straight flutes redesigned for maximum coolant flow and rigidity. According to the company, these design elements will extend tool life, create consistent quality holes and provide superior chip evacuation, combining to a cost per hole averaging 25% less than existing drills.
The T-A Pro drilling system is available in diameters ranging from 0.4370" to 1.8820" (11.10 to 47.80 mm) and is suitable for holes with stub, 3×D, 5×D, 7×D, 10×D, 12×D and 15×D depths. Drill variants include imperial and metric shanks with flat and cylindrical designs. The carbide insert geometries offered initially will cater to the following ISO material classes: steel (P), with AM300 coating; cast iron (K), with TiAlN coating; and non-ferrous (N), with TiCN coating.
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.
Running rotary milling cutters at the proper speeds and feeds is critical to obtaining long tool life and superior results, and a good place to start is with the manufacturer's recommendations. These formulas and tips provide useful guidelines.
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.