Mitsubishi Materials Corporation, Advanced Materials & Tools Company (President – Fumio Tsurumaki, Headquarters: 1-3-2 Otemachi, Chiyoda-ku,Tokyo) has launched additional types for the MS plus solid carbide end mill range.

MS plus end mills are regarded as tools with stable tool life when machining a broad range of workpiece materials up to 50HRC that are commonly used in the mould and die industry. Now the MS plus end mill series has been further expanded to include 2 new square corner types, MPMHV and MPJHV. They are both suitable for high efficiency machining of stainless and carbon steels.

Features of MPMHV and MPJHV, MS plus end mills

• MS+ coating is used because it displays excellent wear resistance over a broad range of workpiece materials from carbon steels through to hardened steels up to 50HRC.
• They deliver overwhelmingly high vibration resistance by adopting flutes with different helix angles. This helps to deliver reliable enable machining on long overhang applications. Moreover, the MPJHV, semi-long cut length type is especially effective for deep wall machining.
• MPMHV, the medium length flute type realises higher general-purpose use because both the cutting edge and overall length are slightly longer than conventional products.

Seco recently added new JPD and JC end mills to its line of Jabro products developed specifically for cutting composite materials. These end mills consist of four new geometries that bring fast, efficient cutting to applications involving workpiece materials such as carbon and glass fibre composites as well as carbon reinforced plastics (CRFP).

The JPD group of solid-carbide end mills, which consists of the JPD880 square end mill, JPD850 ball nose end mill and JPD840 compression-type end mill, features brazed polycrystalline diamond plates to achieve fast, efficient cutting and long tool life. Main PCD-plated bodies include through-coolant channels for highly effective chip and dust evacuation. The JPD880 and JPD840 end mills are available in diameters that range from 6 mm to 16 mm, while the JPD850 covers diameters from 4 mm to 16 mm. Two PCD plate lengths – normal and long – are also available for the JPD880.

The JC solid-carbide end mill group, which includes the JC875 solid-carbide router, delivers superior surface finishes via a special edge treatment that prevents wear and ensures the longest possible tool life. An added diamond coating further boosts the tool’s wear resistance, allowing it to withstand the highly abrasive properties of composite materials. Seco also imparted a special chip-splitting design to the end mill for clean cutting actions. Diameter ranges for the JC875 are from 3 mm to 12 mm, with .250″ to .500″ imperial sizes also available.

Overall, all four of these geometries incorporate special advanced designs so that composite workpiece materials remain undamaged during the machining process. As a result, users of these end mills can expect clean, controlled cuts for high surface finish quality.