In the integrated machining center, the bottleneck in general processing is mostly in the tapping operation, the production efficiency is lowered, and the product cost is increased. In recent years, due to the rigidity, repeatability and precision of the machining center, the new CNC machining center is equipped with the function of rigid tapping. Therefore, the rigid tapping method of the CNC machining center has great development prospects. 1. High-speed tapping method There are two kinds of tapping methods on the CNC machining center: 1 high-precision automatic reverse thread tapping machine, the maximum speed reaches 6000r/min. 2 does not need any rigid tapping with compensation. These two types of tapping methods have their own advantages and disadvantages, so they are completely selected according to the processing requirements. In mass production operations, due to the pursuit of high efficiency, automatic reverse thread tapping will be beneficial to production, but its mechanism is complex, accessories
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