It has long recognized the importance of balance performance of boring cutter for boring processing quality. In the high speed cutting the boring, balancing problem appears moreoutstanding, even the tool small unbalance may be a great impact on the processing of aperturesize, surface roughness, roundness and tool life. In addition, the unbalanced tool may also causethe cutting chatter. In recent years, many standard boring are adding a balance mechanism, this mechanism consists of a counterweight block can move, due to the unbalanced state of boring cutter is mainly caused by the change of pore size of processing, it can be adjusted according to the weight set of processing aperture boring tool. This approach to maintain balance while effectivetool, but rather spend time. In addition, the balance device is arranged in the tool outside, exposed to the coolant, chips and oil, it is easy to be damaged.

Installed with new boring self balancing mechanism can solve this problem. When the clampingblade to one direction to adjust the aperture adjusting tool holder, boring head inner balance weight block with a mechanical connection is also moving in opposite directions, in order to maintainthe balance of the boring cutter. The built-in self balancing mechanism is sealed in the boring head,with coolant and chip completely isolated.