In the near future, the HSK technology of lathes will be newly standardized. The current complete HSK clamping technology program has formed a detailed standard specification.
HSK as a tool interface should be attributed to its thorough success in high-profile and high-rigidity rotary tools. At the same time, this interface is standardized and it has nothing to do with producers and industry. However, the HSK tool interface has been problematic in the introduction of fixed tools. The reason is that for rotary tools, the tolerance between the groove on the shank and the bulge on the tool holder does not have a large effect, so this tolerance is set relatively large in the standard. However, for fixed tools, the tolerance of this raised device plays a very critical decisive role. If the tolerance is too large, the result will be very inaccurate in cutting height and cutting position.
Future HSK-T standards for lathes and Japan's Turn-Chip Composite Machining Interface Committee (ICTM) standards limit the tolerances of this raised device to a minimum and make it possible to quickly and quickly change the tool.
Tool change time is significantly reduced
The application of HSK technology in rotation brings important advantages. The first is that HSK technology significantly shortens the tool change time. So far, the tool change in the previous standard system took about 10 to 15 minutes, while in the system with the HSK interface, the tool change time was reduced to less than 30 seconds. In addition, the high accuracy of the HSK interface allows pre-adjusted tools to be applied directly without the need for sample inspection or correction on the machine.
Figure 1. Four different toolholders form the basic components of Mapal's HSK clamping technology program. 
Figure 2 The clamping force of some new fixtures is twice the value specified in the HSK-T standard.
Mapal, based in Aalen, one of the first manufacturers, has developed a complete HSK clamping technology program for lathes and milling machines with rotating devices. This technology has taken into account future HSK-T standards and achieves the high clamping forces required. The four different tool holders shown in Figure 1 are the basic components of this new clamping technology, and these components can be mounted on the tool holder when the machine is in phase with it. Although the four components have different form factors, they all have a large axial passage.
With this type of tool holder and tool, on the one hand the path of the cooling lubricant can be optimized, and on the other hand, additional functional components can also be introduced. This makes it possible, for example, to install a powered tool on a rotating device with a manual clamp, which has a great clamping force. Sometimes this clamping force is even twice the required clamping force specified in the HSK-T standard (as shown in Figure 2).
Machining with the highest precision and machining from the smallest diameter hole requires complete elimination of the projection tolerances. To introduce this type of machining, Mapal offers a system that ensures the precise position of the rotary cut, offering an additional option to integrate this system with tool safety. When the HSK tool holder is not clamped, the tool does not slip from the tool holder into the machine. Reduce the risk of accidents. The tool is protected.
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