The structure is simple and concise
The CAPTO system uses a triangular-edged circle to transmit torque without any components such as balls, keys or pins. Its structure is simple; while KM and HSK use steel balls with sliding rails to lock and transmit torque, and the structure involves more parts. Relatively more complicated.
Different processing difficulty
The triangular circle in the CAPTO structure and the matching triangular holes and detection equipment are difficult to process because the triangular circle is a finite value parallel to a secondary (remaining) cycloid generated by an infinite value. Curve. At present, most manufacturers in China do not have the processing capacity, and foreign manufacturers must also use special equipment to produce.
However, there are certain difficulties in the processing of the circlip and the steel ball slide in the KM and HSK structures. The material, heat treatment and processing parameters of the circlip are more demanding, otherwise it may cause lockup.
In short, the triangular circle is a design that is close to idealization, but its processing performance is poor; while the processing of HSK is more popular and the processing performance is better.
4 Conclusion
Practice has proved that KM, HSK and CAPTO systems have been used in machining fields such as turning, drilling, boring and milling for nearly two decades, which has played a role in improving the precision of products. The 1:10 short cone system has been officially listed as an international standard in the world and is widely promoted worldwide. Although it is not perfect in some respects, we believe it will continue to lead the new trend of the 21st century tool system.
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