The cutter of nc machining tool clamping use correct operation steps and the note!

(1) the clamping of the milling cutter: machining center with the milling cutter is mostly USES the spring clip set forms, in use process is in a state of the cantilever. In milling process, the possible milling cutter, gradually fell out from the cutter holder, cause the tool shed, eventually led to the workpiece scrapped, it's generally because of milling cutter with a knife handle diameter between inner hole there is a layer of oil film, resulting in the insufficient clamping force. Factory in milling cutter when the shipment will be coated with anti-rust oil commonly, if used in cutting is water-soluble cutting oil, the oil will results in a hole in the cutter holder attached to a layer of mist of oil film, in this case, the handle and cutter is the presence of a layer of oil film, cutter holder will be difficult to handle grip, will lead to cutter in machining is loose and fall off. So, in the cutter clamping before use, should first cutter handle and cutter holder inner hole wash clean with cleaning fluid, dry again after the clamping tool. However, when the diameter of the milling cutter is larger, even if the handle and cutter holder are washed very clean, still there will be accidents may occur off the knife, this time should be used with the handle of the gap made and the form of corresponding to the side of the lock. Cutter after clamping is another problem that may occur when the milling cutter in machining, tool holder port broken, the occurrence of the situation, generally is due to the use of the knife holder time is too long, cause the knife clip port department has worn into cone, at the moment is the right thing should replace the new cutter holder. (2) the vibration of milling cutter: between the cutter and cutter holder would have some small gap, the gap will cause in the process of machining, cutting tools, the phenomenon of the vibration. And vibration can cause uneven turning cutter circular blade, which resulted in increased cutting expansion volume than the set value, the serious influence machining precision and service life of the cutter. Hours but when machining the groove width, can control the tool vibration, obtain needed by increasing the cutting expansion slot width, but in the case of this type should be to control the maximum amplitude of the milling cutter is 0. 02 mm below, or cutting will not stable. In theory, when the normal processing the vibration of the milling cutter is as good. But when a cutting tool vibration, the first thing to consider is to reduce cutting speed and feed rate, if both are already dropped to 40%, still have considerable vibration of the cutting tool is, want to consider to reduce the turning operations. Such as machining parts appear resonance phenomenon, the reason may be that too much cutting speed, feed rate is too small rigid enough, cutting tool, workpiece clamping force and workpiece shape or workpiece clamping tight enough and so on factors, at this time can adjust cutting parameter and adjust the progress of feed speed, etc.