Turning tool set-up

Good quality in turning is mainly dependent upon the tool system and how it is used together with the cutting material.

Overhang

For an optimal turning tool setup, use a tool holder with as short an overhang as possible, to avoid vibration. We recommend using a sub-spindle or tailstock for support, if available.

When machining with long overhangs, it is especially important to mount the bar correctly, to ensure enough clamping contact. Recommended clamping length is 4 × bar diameter (D). This will result in a stable tool setup.

Cylindrical boring bars and adapters can be clamped in split sleeves. Large boring bars and adapters can be clamped using two split bearing caps.

Tool assembled with split sleeve

Tool fixed in two split bearing caps

Max tool overhang

For best performance of the boring bar, the contact, design and dimensional tolerance between tool and tool holder are important factors. The best stability is obtained with a holder that completely encases the bar. A V-type bar holder and cylindrical holder with screws are not recommended.

Holder that completely encases the bar

V-type bar holder

Cylindrical holder with screws

Tool holding

Coromant Capto^® is a modular, quick change tooling concept that, when directly integrated in the spindle, increases stability and versatility in multi-task machines, machining centers with turning capability and vertical lathes, for example.

Silent Tools™ adapters are designed to minimize vibration through a dampener inside the tool. The majority of Silent Tools™ customers use these tools for long overhangs. However, even with shorter overhangs (3 x D), large productivity increases and surface quality improvements are to be gained.

EasyFix™ sleeves are a setup-time-reducing solution for cylindrical adapters. A spring plunger mounted in the sleeve clicks into a groove in the bar to guarantee the correct center height. EasyFix™ sleeves are designed for high coolant pressure.

The QS™ holding system is a quick change tool holder that maximizes effective production time in sliding head machines. Use QS™ with high-pressure coolant for problem-free production and improved component quality. Available in most turning styled holders.