Cheshire-based
Rainford Precision, known for its expertise in machining tough and hard materials using a variety of end mill and drill tool geometries, is now offering the new CEHS series of end mills that have been developed specifically to reduce chatter and improve precision and surface finishes in instances where other tools fail.
The CEHS tungsten carbide four-flute end mills from Japanese cutting tool experts Union Tool are perfect for manufacturers struggling to hit the ‘sweet spot’ with their high-end machining applications. Ideal for machining everything from carbon and alloy steels to pre-hardened steel, cast iron, copper, titanium and heat-resistant alloys, the new CEHS series incorporates a 40deg helix and a variable pitch design that is perfect for slot and standard milling. Union Tool has developed a new chip pocket that introduces an innovative large pocket design of the main flute that enhances swarf evacuation and eliminates the re-cutting of chips – extending tool life, machining performance and efficiency.
The Union Tool CEHS series has a h4 shank diameter tolerance of +0/-0.004mm, emphasising the precision, balance and quality of the range. To further enhance milling stability, the new series has a small relief surface that further promotes stability and prevents chatter – even when undertaking operations with long tool overhang and reduced machining stability.
The ultra high-quality micro-grain carbide, UT coating technology and 16deg tapered shank design enable the 6mm diameter CEHS tool to machine slots in unstable conditions with an increase in milling efficiency of 80% improvement when compared to conventional tools. Capable of cutting at machining parameters of 5,000rev/min and 900mm/min feed with a feed per tooth of 0.045mm at a depth of 6mm, the CEHS genuinely excels where others fail.
This high-performance range of end mills is available in diameters from 1 to 6mm in 0.5mm increments with additional diameters from 6 to 12mm offered in 1mm increments. Each diameter designation has three different lengths of cut from 1.5 to 3xD to ensure manufacturers can optimise their performance when machining in unstable conditions or accessing parts with difficult-to-reach surfaces. Depending upon the diameter selected, the CEHS is available with a shank diameter from 4 to 12mm with an overall length from 50 to 100mm.
To emphasise the exceptional stability and performance of the CEHS series, Union Tool has undertaken extensive tests on carbon, alloy and stainless steel with both side milling and slotting performance recorded.