发布时间：2021-03-30 10:52:26 来源：http://www.jnskdj.com 作者：骏豪 浏览量：
When the tungsten steel milling cutter is used for back milling, the tungsten steel milling cutter starts to cut from the zero chip thickness, which will produce a high cutting force, thus pushing the tungsten steel milling cutter and the workpiece away from each other. When the tungsten steel milling cutter blade is forced into the notch, it usually contacts with the hardened surface caused by the cutting blade, and produces friction and polishing effect under the action of friction and high temperature. The cutting force also makes it easier to lift the workpiece from the table.
When the tungsten steel milling cutter is used for forward milling, the tungsten steel milling cutter starts to cut from the place with large chip thickness. In this way, the polishing effect can be avoided by reducing the heat and reducing the hardening tendency. The application of large chip thickness is very advantageous, and the cutting force is easier to push the workpiece into the tungsten steel milling cutter, so that the tungsten steel milling cutter can cut.
During the milling of tungsten steel milling cutter, the broken chips are sometimes bonded or welded to the cutting edge, and will gather around the beginning of the next cutting edge. In the process of reverse milling, the recovered chips of Jiaxing tungsten steel milling cutter are easy to be trapped or wedged between the blade and the workpiece, which will lead to the fracture of the blade. The same chip breaking will be divided into two parts during milling, so the cutting edge will not be damaged.
No matter what the requirements of machine tools, fixtures and workpieces are, forward milling is the preferred method. Because the cutting force is easy to push the blade forward while keeping the workpiece in the lower position, the down milling has certain special requirements for the machining process. This requires the machine to eliminate the backlash to deal with the table feed requirements. If the tool is pushed into the workpiece, the feed rate will increase irregularly, which will lead to excessive chip thickness and edge collapse.
Reverse milling should be selected in such applications. In addition, if the machining allowance changes greatly, it is more advantageous to choose the reverse milling. In order to clamp the workpiece correctly, it is necessary to have a suitable fixture, and the correct tool size is also required for the operation. But for the vibration trend, the cutting force direction is more important.