Smart Damper Boring Heads Eliminate Vibration in Deep-Hole Finishing

In Booth W-1600, BIG KAISER Precision Tooling Inc. (Hoffman Estates, IL) will display their EWN and EWD Smart Damper precision boring heads with a patented damping system to eliminate vibration in deep-hole finish boring. The integral design of these new heads shortens the distance from the damping mechanism to the cutting edge, which is the source of vibration. This produces higher damping effects to the tool assembly to minimize the chatter or vibration – thus achieving better surface finishes and improved metal removal rates. “For precision machining of deep bores, it had previously been necessary to program low cutting parameters in order to prevent vibrations, which unnecessarily increases machining time,” explains Jack Burley, the vice president of sales and engineering at BIG KAISER. “The EWN/EWD Smart Damper overcomes this problem and enables high cutting parameters to be used. This means that extremely short turnaround times can be achieved, which improves productivity by up to a factor of ten.”

Tests have shown that deep holes free of vibration can be bored with an excellent surface finish with dramatic time savings. For example, with a projection length of 14.3 in working with high-carbon steel at a cutting speed of 1,300 sfm, an impressive feed rate of 11.4 ipm was achieved with the EWN41 Smart Damper. The newest Smart Damper solution is either equipped with the tried-and-true EWN analog boring head series, or the latest digital technology in the EWD series. The EWN heads feature a dial with Ø.0005 in/div setting accuracy (.0001 in w/ Vernier) and have a large digital screen that clearly shows adjustments to an accuracy of Ø.00005 in, thus helping to minimize operator errors and removing the need for complicated Vernier markings. The digital display can be reset to zero at the push of button and has an auto power off function, while the current position of the cutting edge will be shown automatically again due to direct path measurement when the tool is switched on.

The new Smart Damper is compatible with the modular CK/CKB system, meaning the length of tool combinations can be freely selected up to a maximum of ten times the diameter and are capable of being run on nearly every major spindle interface. All tools are coolant-through and, thanks to three different insert holders per head size, an extraordinary boring range is possible. For example, the EWN and EWD68 heads can bore a range of Ø2.677 in to 5.906 in! For additional peace of mind, all EWD heads have a seal rating of IP 69K – the highest possible.

BIG KAISER Precision Tooling Inc., 2600 Huntington Boulevard, Hoffman Estates, IL 60192, 224-770-2999, Fax: 224-770-2997, bigkaiser@us.bigkaiser.com, www.us.bigkaiser.com.