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MP Chipbreaker

December 4, 2009

MP Chipbreaker In these ever changing times, finding a dedicated solution is not always efficient and engineers are repeatedly looking at quicker ways to improve production. Utilising a synergy of innovative chip breaker geometries and coatings; enabled by advancements in the latest technology in how to apply them, and matching a suitable carbide substrate was the answer when Mitsubishi Materials developed the latest turning inserts, UE6105 with MP chipbreaker.

Increasingly complex components are seen more often on machine tools in everyday production and this complexity places large demands on the tools needed for efficient manufacturing. In addition, greater emphasis is also being placed on inventory levels, creating the need for tools to be as versatile as possible, especially in smaller machine shops where varied batch quantities of components negates the need to find the absolute optimum cutting conditions due to the short production run. Therefore, it’s important to have tools that can be relied upon to be cost effective, reduce set up time and be versatile whilst maintaining good levels of productivity and reduce stocks of cutting tools in quick turn around situations.

Several key features of the new MP breaker were designed to meet the requirements of these latest multi-purpose trends.

During a typical copy turning operation, conditions such as depth of cut feed rate and the cutting speed can vary tremendously. This can lead to a number of problems and reduce efficiency. Chip breakers are very effective within their own operating envelope, but performance soon suffers outside these parameters. Such conditions are typically found during extreme differences in workpiece geometry. Problems such as chip wrapping that create machine down time, and uneven insert wear can be solved with a multi purpose breaker.

Specific features such as wings located either side of the main peninsula breaker delay wear propagation and preserve chip control even as the insert wears. A wide frontal chip pocket also allows smooth material flow to lessen overall cutting resistance. The synergy of these features is also a factor in lowering friction that leads to reduced cutting temperatures. This reduction in heat formation improves wear resistance and contributes towards overall productivity with fewer insert changes. Workpiece dimensional accuracy and consistency is also improved when lower cutting temperatures are maintained. Heat analysis of chips clearly shows areas that have benefitted from the extra shapes formed in the chip breaker. Despite big improvement of modern coatings, a well designed breaker can contribute greatly towards improving the rate of crater wear by reducing the amount of heat generated at the cutting edge.

MP breaker is available in 4 different grades and 6 different insert types for machining steels through to cast iron.

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