SafeLock System to Prevent Tool Pull-Out in High-Performance Machining Applications

Haimer USA (Villa Park, IL) notes that in recent years, special cutting tools have been developed to withstand the high torques, feed rates and machining forces associated with high-performance cutting.

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Haimer USA (Villa Park, IL) notes that in recent years, special cutting tools have been developed to withstand the high torques, feed rates and machining forces associated with high-performance cutting. Yet, there is still a danger of tools being pulled out of chucks as a result of the high loads. Haimer is offering a solution for manufacturers that push their machines to the limit—SafeLock. The SafeLock System combines the advantages of a shrink-fit chuck with those of a positive connection by integrating ball or pin drivers into the chuck. Those drivers grip into helical grooves that are ground into the cutter shank in the opposite direction of the cutting forces. Because of the shape of the groove, the tool is simultaneously safeguarded against spinning as well as against pull out when confronted with radial and axial cutting forces. The principle of the SafeLock System is not only limited to use in shrink-fit chucks. It can just as easily be integrated in a collet or hydraulic chuck. Helical Solutions LLC of Gorham, ME recently became the first official worldwide SafeLock licensee, allowing its customers to order the SafeLock modification to their cutting tool shanks.