For intermediate machining, a four-edged PCD tool with brazed cutting edges has been developed that can be used as an alternative to a twin-edged standard tool, as long as the length/diameter ratio allows.
The outcome of finishing operations depends largely on the quality of the intermediate machining. Previously, the high standards placed upon finishing work had been met by using a single-bladed, finely adjustable PCD fine boring. However, Mapal says it has developed a reliable and more economic machining strategy.
Depending on the requirement, three- to six-edged fixed PCD fine boring tools are available for finishing work. These are said to provide a significant improvement in cycle times, with almost the same precision.
