Connecting rod machining: Reliable stepped bore in one machining step

Mapal has developed a step drill especially for the screw bores in the connecting rod with which the mass production of these parts can be made far more effective. The new step drill produces the screw bore in just one machining step.

The step drill developed especially for the screw bores in connecting rods drills the bore in one machining step.
The step drill developed especially for the screw bores in connecting rods drills the bore in one machining step.

A special geometry, coating and edge preparation in combination with the four guide chamfers ensure optimum process reliability with very high performance and tool life. With a newly developed chip guiding stage (patent pending), a short spiral ship is produced at the countersink diameter that is freely discharged and cannot wrap around drill or chuck. In order to ensure process reliability and consistently good results in mass production, the drill was made from a special ductile carbide material in combination with a sturdy geometry and is ideally suited to the production of large quantities of connecting rods.

Mapal
Präzisionswerkzeuge
Dr. Kress KG
Postfach 1520
D-73405 Aalen
Phone    +49 / 73 61 / 5 85 – 1 24
Fax    +49 / 73 61 / 5 85 – 1 10
www.mapal.com

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