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SCHUNK balances precision machining as standard

SCHUNK balances precision machining as standard

Added to MTDCNC by MTDCNC on 30 July 2014

To achieve precision in the sub-micron range during ultra precision machining, tool holders need features such as balancing grade extremes. This is now being offered by SCHUNK, the competence leader for clamping technology and gripping systems as standard, with its TRIBOS-Mini and TRIBOS RM series of polygonal tool holders.

Now available from SCHUNK, the new tool holders are offered with HSK-E 25, HSK-E 32, and HSK-F 32 interfaces that start with a clamping diameter from 0.5mm. As an additional option, SCHUNK is also providing ultra-fine balanced tool holders with a balancing grade of G0.3 at 60,000rpm. Therefore demanding requirements in terms of dimensional accuracy and surface quality when micro-mould making can now be provided for precision sectors like the optical, medical, watch and jewelry industries. Compared to conventional balanced tool holders for micro machining, the tool life is significantly longer whilst delivering precision and surface finishes beyond alternate systems. In micro machining it is commonplace for extremely small, intricate and expensive tools to be used; so employing such precision tool holders will pay dividends for the end user in a short period of time.

The TRIBOS polygonal tool holder technology that has been developed and patented by SCHUNK is the ideal choice for micro machining. Even the standard mountings deliver convincing performance levels with a run-out and repeat accuracy of less than 0.003mm at a clamping length of 2.5xD and a balancing grade of G2.5 at 25,000rpm. The TRIBOS is suitable for every tool shank of h6 quality and depending on the type, it has been tested up to 205,000rpm.

Since the mountings have no movable parts, they are mechanically resolute and ensure an almost maintenance and wear-free service life. Even after several thousand clamping cycles, there are no signs of material fatigue. Additionally, the tool change of the TRIBOS is reliably done via a hydraulic clamping device within a few seconds.

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