Sumitomo Electric Hardmetal supplied drills for manufacturing parts for CERN

Due to concerns over the accuracy of its previous machine when drilling the 3mm holes for the components, Inca trialled a Sumitomo Super Multi-drill XHT. This features a ’double margin’ on the leading edge and heel of the tool land that adds stability when and reduces the level of thrust required from the drive system.

Additionally, the tool helped to reduce the size of chips produced and removed them effectively due to the design of its fluting — which reduced the likelihood of drill wander and enabled the precise targeting required for the application.

As the client was concerned about drill breakage within the hole it was decided to drill each hole to a set depth, turn the component over and drill to break through in the centre.

Sumitomo also provided its MDW-PHT pilot hole drill, which was used to ensure the start position and produce ’bushing’ that stabilises the multi-tool’s initial penetration.