Press release BoxID: 702563 (MAPAL Dr. Kress KG)
  • MAPAL Dr. Kress KG
  • Obere Bahnstr. 13
  • 73431 Aalen
  • Contact person
  • Andreas Enzenbach
  • +49 (7361) 585-3683

75% faster with spiral-fluted PCD step drill

(PresseBox) (Aalen, ) A proven means of making production processes more effective is to combine several machining operations in one tool. However, this creates a very high volume of chips that have to be reliably controlled and efficiently discharged. The new spiral-fluted PCD step drill from MAPAL ensures optimum chip transport so that extreme reductions in machining time for drilling and boring processes in aluminium parts are possible. Where previously three tools were necessary for piloting, deep hole drilling and boring, these three operations can now be performed with just one tool in a single shot.

Optimum chip removal and reduced heat input into the part
Several features are crucial for the exceptional performance of the new PCD step drill, and these have to be perfectly matched. The spiral-fluted chip spaces, in particular, contribute to a very good chip transport out of the bore and ensure that there is no congestion of chips even at the transition from the solid drilling to the boring step. The right flute geometry and pitch is crucial for this, and the chip flutes are also polished over the whole length of the drill to minimise the friction of the chips. The PCD blades embedded perfectly into the spiral of the solid drilling and boring step result in a good cutting behaviour of the drill. This reduces the heat input into the part compared with conventional drills with straight flutes. And finally the correct position of the coolant outlets for MQL machining is crucial for the performance of the drill so that the aerosol reaches the points where lubrication is necessary. This reduces the risk of build-up edges and naturally also helps to prolong the tool life of the drill.

Producing spark plug bores 75% faster
One application example is the spark plug bore in a cylinder head of AlSi6Cu4. The bore is produced on a machining centre with minimum quantity lubrication, making the controlled removal of the chips from the bore particularly important. At a spindle speed of n = 5,600 rpm and a feed rate of vf = 2,500 mm/min, the one-shot solution from MAPAL reduces the cycle time by 75%. That corresponds to a time saving of 42 seconds for a cylinder head for a 4-cylinder engine, offering a significant boost in profitability and productivity.

The spiral-fluted high-performance drill with PCD cutting edges reduces the machining times by 75%.

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MAPAL Dr. Kress KG

MAPAL – tooling the customer's success

MAPAL Präzisionswerkzeuge Dr. Kress KG is one of the leading international suppliers of precision tools for the machining of practically all materials. The company founded in 1950 supplies leading customers from the automotive and aerospace industries and from machine and plant engineering. With its innovations the family-owned company sets trends and standards in production and machining technology. MAPAL sees itself as a technology partner, supporting its customers with the development of efficient and resource-conserving machining processes using individual tool concepts. The company is represented with production facilities, sales subsidiaries and representatives in 44 countries worldwide. In 2013 the MAPAL Group had 4,300 employees, generating sales of EUR 470 million.