Schunk expands precision toolholding range for micro-machining
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Schunk is planning a significant expansion of its precision toolholding systems for micro-machining. Its Tribos-Mini, which is designed for high speed micro applications, will shortly be joined by the high speed HSK-E 20 spindle interface. This newly standardised interface is considered superior to many short taper interfaces due to its accuracy at high speeds. In addition, it occupies less space than the HSK-E 25.
Schunk has also designed the robust Tribos-RM with an extended L1 dimension of 78 mm especially for high efficiency 5-axis machining. The super-long unit can be used in a multitude of applications. In addition to direct clamping, it is suitable for clamping small shank diameters in conjunction with the standardised GZB-S intermediate sleeves. For precision machining of hard-to-reach areas, the mount can also be combined with the standardised Tribos-SVL tool extension. As a first step, the company is offering the universal 5-axis professional tool for HSK-A 32, HSK-A 40, HSK-E 32 and HSK-E 40 interfaces.
In addition to launching these two products, many previously special solutions will in future become standard and included in the Schunk catalogue. For example, the Tribos-Mini will be standardised in diameter sizes of 1, 1.5, 2, 3, 4, 6 mm and 1/8 inch and TribosRM in 3, 4, 6, 8, 10, 12 mm and 1/8 inch. In addition to the HSK-A 25, -A 32, -A 40, -E 25, -E 32, -E 40 interfaces that are already available, both mounts will also be available for HSK-E 20, HSK-F 32 as well as for BT 30 and SK 30.
Schunk's patented Tribos polygonal clamping technology employs a polygonal locating hole for the tool instead of a round one. It offers concentricity and repeat accuracy of less than 0.003 mm over several thousand clamping procedures. This applies to an unclamped length of 2.5 times the shank diameter.
Schunk says users in the micro die construction field report that Tribos is the first system ever to achieve reliably precise results when using milling cutters with a cutter diameter of 30 µm.
