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Deep thinking

24 June 2020 • In Products
Deep thinking

Investments in conventional deep hole drilling machines can be very expensive. Somex, a member of the Suhner Group, now offers custom made deep hole drilling solutions capable of drilling up to 12mm diameter and as deep as 100 x D.

These modules can be integrated directly into transfer machines, special purpose machines or conventional equipment such turning machines. The potential for cost savings is substantial.

In recent years, Somex has devoted considerable R&D time and capital resources to develop its deep hole drilling technology, according to company sources. In addition to standard Max machining units, Somex can now offer peripheral components. Thanks to its modular component concept, the company can provide customised turnkey, small and economical deep hole drilling machines.

Somex routinely conducts tests with actual tools and material to prove out the design and performance of its customised deep hole drilling solutions. Tests are undertaken at the factory, using specific production tools under real production conditions.

The manufacturer uses single cutting edge and carbide spiral drills up to 70 x D and using this approach, Somex can stand behind the design and performance and thus deliver practical and realistic results to its customers.

The deep hole drilling process typically requires either a 1.5 x D pilot-drill or a drill guide bushing, which is then followed by the deep hole drilling process.

The innovative design concept combines the guide bushing with a chip basket, allowing both items to travel in unison. The movement of the guide bushing is air-driven, which helps to  provide much closer contact to the part while preventing the escape of the coolant medium. For longer deep hole drilling applications, it may be necessary to integrate a support bushing to stabilise the deep hole drilling tool.

The degree of accuracy in a deep hole drilling application measured by the deviation from the theoretical part centreline is greatly enhanced by a slow part rotation in a counter-clockwise direction.

For deep hole drilling applications above 18mm diameter, Somex has the option to equip its Max machining units with drilling systems from BTA or Ejektor lines. In these applications, the coolant and chip management is accomplished through the spindle centre. The emulsion is collected at the back end of the spindle, filtered and pressurised to re-enter the coolant system.

This solution is often used in high-volume precision parts manufacturing such as automotive and other industries.

Suhner
www.suhner.com

Michael Tyrrell

Author

Michael Tyrrell
Digital Coordinator

Tags

Suhner Automation deep hole drilling

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