Log in to use our free company, program and sector update tracker feature.

Front page

Dormer’s R790 Carbide Composite Drill

Advancing composite machining

The increasingly widespread use of composite materials brings with it new and increasingly complex challenges, not least the need for ever more innovative tooling solutions.

One of the more common problems facing manufacturers is the machining of composite-metal alloy hybrids or 'stack' materials. Because both material types exhibit very different machining characteristics, the key here is finding a one-shot drilling solution that provides a clean hole without causing damage to the component or necessitating additional processes.

Engineers from Dormer are working with customers worldwide to develop specialised cutting tools capable of meeting this growing need.

One such example occurred when Dormer was asked to advise on a drilling application involving a wing skin assembly. Here, the customer needed to drill a stack material comprising of 10mm thick aluminium and 4mm thick carbon fibre.

"Ordinarily", says Ricky Payling, Dormer's European key account manager for aerospace and composites, "the customer would have to cut a smaller diameter hole first, gradually opening this out to the finished size. This not only takes time but also involves the use of several different tools.

"However, with Dormer's R790 carbide composite drill we were able to machine through-holes with no delamination or splintering on the carbon fibre and no exit burr on the aluminium."

Other significant achievements have included machining composite stacks with a glass cloth exit face. "With this type of material", Ricky explains "it is extremely difficult to produce a hole with a perfectly clean periphery. However, after consideration of the required geometry, we were able to manufacture prototype tools that consistently delivered holes with excellent exit quality, showing no signs of delamination, splintering or fraying of the glass cloth."

Press release issued by Dormer Pramet on May 4, 2011


 Contact details from our directory:
Dormer Pramet Drill Bits, Cutting Equipment, Metal Removal Tools, Hand Tools, Machine Tools, Countersinks, Dies, Metal Working Tools, Milling, Reamers, Tooling, Cutting Tools, Tapping, Riveting Tools


 Related directory sectors:

Enhanced listings:

Valence Surface Technologies
The leading metal processing company serving the global aerospace industry. Valence’s ten facilities offer full-service capabilities: NDT, shot peen, chemical processing, paint, and other coatings.

Reduce the time spent on current projects by using ESDU – engineering data and software that have been approved and endorsed by professional institutions.

Beckwood Press
Your single source for aerospace forming equipment. Manufacturer of Triform Sheet hydroforming presses.

The leading provider of heat treatment services worldwide. Bodycote offers high quality, reliable and cost-effective services to manufacturers whatever their size or market sector.

MW Industries, Inc
Design and manufacture springs, fasteners and related products for aerospace including: engine components, flight controls, propulsion, landing gear, interiors, avionics, and space exploration vehicles.

See our advertising tariff.


Monthly page limit exceeded. Please buy a subscription.

© Copyright of Airframer Limited, operated under licence by Stansted News Limited 2016. Terms & Conditions of reading.