Carbide End Mills Lengthen Tool Life, Reduce Wear
Amerimold 2017: RobbJack will highlight its DM/MDM end mills.
RobbJack will highlight its DM/MDM end mills, made from a carbide material and coating combination said to last 450 percent longer than comparable tools designed for hard-metal applications. Testing in D2 steel with a hardness of 58 HRC resulted in a smooth wear land of just 0.0025", the company says.
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.
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.
Creating threaded holes in titanium alloys calls for proper techniques based on an understanding of both the properties of these materials and the peculiarities of the tapping process.