What happens when the tool vibrates on a milling cutter?
As there is a small gap between the milling cutter and the tool holder, the tool may vibrate during the machining process. The vibration will cause the milling cutter's circumferential edge to eat unevenly, and the cutting expansion will increase compared to the original value, resulting in consequences that will affect the accuracy of the machining and the life of the tool. However, when the width of the groove machined is small, the tool can be effectively made to vibrate, after this increase in cutting and expanding the amount of the required groove width can be obtained, reminded that in this case, the milling cutter should be more amplitude is 0.02mm or less, otherwise it can not be stable cutting. The lower the vibration of the milling cutter in normal machining, the better.
When tool vibration occurs, consider reducing the cutting speed and feed rate, if both have been reduced by 40% and there is still a large vibration, consider reducing the tool draft.
If the machining system resonates, the reason may be that the cutting speed is too large, the feed rate is small, the tool system is not rigid enough, the workpiece clamping force is not enough and the shape of the workpiece or the workpiece clamping requirements and other factors, then you should take measures to adjust the cutting amount, increase the rigidity of the tool system, improve the feed rate.
Carbide milling cutter rotation operation can be divided into two kinds. The following is a brief analysis of your come Bao tool manufacturers:
Firstly, the direction of rotation of the milling cutter is the same as the cutting feed direction. At the start of the cut, the milling cutter bites into the workpiece and cuts off the chips.
Rotational operation of the carbide milling cutter
Another type of milling is reverse milling, where the milling cutter rotates in the opposite direction to the cutting feed. Before starting to cut, the milling cutter has to slide over the workpiece for a period of time, starting from zero cutting thickness and reaching a maximum cutting thickness at the end of the cut. The cutting forces of the three-sided edge milling cutter are in different directions, some end milling or face milling. In face milling, the milling cutter is just outside the workpiece, so the direction of the cutting force should be paid more attention to. In forward milling the cutting forces force the workpiece into the table, in backward milling the cutting forces force the workpiece off the table.
Forward milling is generally used due to the better cutting results, and backward milling is only considered if there is thread clearance or insurmountable problems with forward milling.
