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The requirements of tool system for high speed cutting

High speed machining is not only the increase of spindle speed, but also the shortening of the overall processing time. Therefore, high-speed machining not only requires the cutting tool to have high rigidity, safety, flexibility, dynamic balance characteristics and convenience of operation, but also to the tool system and machine interface connection stiffness, precision and the clamping force and precision of the tool holder are put forward high requirements.

The so-called tool system is a complete tool system composed of clamping tool handle and cutting tool. It is very important that the clamping tool handle matches the interface of the machine tool and the cutting tool directly processes the parts to be processed. High speed cutting tool system must meet the following requirements:

High safety of tool structure As a tool system used in high speed machining, the structure must be highly safe to prevent the blade from flying out when the tool is rotating at high speed and to ensure that the rotating blade does not break at twice the maximum speed.

Excellent dynamic balance performance of tool system is very important for high speed machining. According to the knowledge of theoretical mechanics, centrifugal force F=mrw2, when the dynamic balance performance of the tool system is poor, the high-speed rotating tool will produce a great centrifugal force, which will cause the tool bar bending and vibration, the result will reduce the quality of the processed parts, and even lead to tool damage.

The static and dynamic rigidity of high systematic rigidity tool system is an important factor affecting machining accuracy and cutting performance. Insufficient rigidity of tool system will lead to vibration or tilt of tool system, which will reduce machining accuracy and efficiency. At the same time, the vibration of the system will aggravate the tool wear and reduce the service life of the tool and machine tool.

High system accuracy System accuracy includes system positioning clamping accuracy, tool repeated positioning accuracy and good accuracy retention. With the above precision requirements of the tool system, in order to ensure the static and dynamic stability of the high-speed machining system, so as to meet the requirements of high-speed, high-precision machining workpiece.

High interchangeability for modular tool systems requires greater flexibility for tool systems to quickly adapt to the machining needs of different parts through adjustment or assembly. In addition, the tool and machine interface should adopt the same tool handle system to reduce unnecessary inventory.