Sandvik Coromant: Efficient machining methods for complex deep holes


Sandvik Coromant Christer Richt

Deep hole machining (DHM)


It is a field of processing dominated by tools designed for existing applications. Many different industries involve deep hole machining, but the most widely used are in the energy and aerospace industries. At first some features of deep hole parts often did not seem to be formed, but the non-standard tool solutions designed by experts, in addition to solving the process problems, ensure that they are performed to some extent with high efficiency and error-free.


Parts for deep hole machining first need to drill very deep holes, and then often complex features. Deep hole machining is successful. It is usually based on mixed use of standard and special tool components. These components have experience in designing non-standard tools. Non-standard tools based on the T-Max 424.10 drill are part of a single tube application.


The growing demand for complex holes and the urgent need to reduce processing time have contributed to the development of modern deep hole processing technology. For decades, deep hole drilling has been an efficient method of machining with carbide tools, but hole bottom boring has begun to emerge as a bottleneck.


Today, success in this field of processing is often based on mixed-use standards and specialized tool components that have experience in designing dedicated deep hole machining tools. These tools feature an extended, high-precision shank with support and integrated reamer, combined with the latest cutting edge geometry and insert material and efficient coolant and chip control for maximum penetration and Get the high quality results you need with process safety.

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