KOMET® introduces roughing and finishing tool for cast workpieces


Just in time for the EMO, the KOMET GROUP is introducing a completely redesigned roughing and finishing tool programme. The tools which are used in machining cast workpieces score points primarily in terms of efficiency, as they complete two processes in one.


The challenge for tools whose aim it is to carry out roughing and reaming in one process lies in achieving the required roundness and coaxiality, given the high stock-removing capacity and accompanying forces. For this reason, such tools are usually equipped with guide rails, which could, however, lead to problems in the machining process. Typically for KOMET®, the development of the new roughing and finishing tools for cast workpieces is based on an indexable insert innovation, which enables not only roughing but also reaming using the economical, multi-blade plank. Thanks to the innovative cutting insert geometry using support chamfers, the old guide rails are no longer required.


In addition, the two features of replaceable cutting inserts and multi-blade indexable inserts (familiar to the field of counterboring) increase both efficiency and flexibility even in finishing tools, compared to traditional reamers with soldered cutters. Furthermore, the adjustable nature of the indexable inserts allows micro-precision adjustments.


The tools are manufactured with four to six cutters on a basic body, depending on the application, and for length/diameter ratios of up to 5xD. With various cutting material/coating variants they can also be perfectly adapted to the customer's requirements, depending on the material. For example, in GG50 the tools work in cutting depths (ap) of three to four millimetres, whereas under good machine conditions IT7 tolerances are possible.



With its brands KOMET®, DIHART® and JEL®, the KOMET GROUP  is a leading global manufacturer of precision tools for bore machining, reaming and threading. The group has been at the forefront of innovation in the sector for over 90 years - a tradition that began with the early indexable insert borers and continues today with their mechatronic tool systems. The company currently employs more than 1,600 staff in its 20 subsidiaries and is represented in around 50 countries.