The main issues existing in the HSK tool system during use.

The main issues currently existing in the HSK tool system are:
(1) The usage conditions for the clamping system and clamping force are not scientifically established.
Relevant institutions have conducted surveys on the actual clamping force used in machining centers (machine tools) during production. It was found that due to improper selection or use of the clamping system (such as the relaxation of clamping springs), the actual clamping force of most machine tools is only about 70% of the specified clamping force, with the lowest being only 30%. This is very dangerous for high-speed machining and even for ordinary machining.

(2) There are unreasonable aspects in the existing manufacturing standards. The processing requirements of the HSK tool system are stringent, and the product prices are high. Due to the stringent requirements, it is difficult for products to fully meet the current standards.
A Swiss company tested HSK tool holders produced by 15 well-known companies abroad, and only one company's products fully met the DIN standards. Currently, a large number of HSK tool systems that do not fully meet the specified manufacturing standards are still in normal use, indicating that there are unreasonable aspects in the manufacturing standards of the existing HSK tool system.
The manufacturing standards of the HSK tool system itself have unreasonable aspects.

(3) Conventional strength checks cannot guarantee the reliability requirements of HSK taper surface fits. The HSK tool system uses both taper and end face clamping between the tool system and the spindle. When the speed is zero, due to the interference of the taper surface, deformation occurs. Once in a high-speed rotation state, this stress deformation will become more severe, thus reducing the reliability of the tool system. Conventional strength checks cannot guarantee the reliability requirements of the tool holder under various parameter conditions.