Sep 25, 2017
Carbide end mill Milling process
Carbide End Mills During the milling process, the workpiece can be fed in the direction of rotation relative to the tool, which affects the start and finish characteristics of the cutting.
Carbide End Mills The feed direction of the workpiece is the same as the direction of rotation of the carbide end mill in the cutting area when the milling is done (also known as the same milling). The chip thickness will gradually decrease from the beginning until the end of the cut is zero at the time of the peripheral milling. When the reverse milling (also known as reverse milling), the feed direction of the workpiece is rotated with the milling of the cutting area The direction is just the opposite. The chip thickness begins to zero, and then gradually increases with the cutting process.
Carbide End Mills During the reverse milling, the carbide end mill blades are cut from the zero chip thickness, which results in a high cutting force, which drives the carbide end mills and the workpieces away from each other. When the carbide end mill blade is forced into the cut, it is usually brought into contact with the machined hardened surface caused by the cutting blade, and friction and polishing are produced under frictional and high temperatures. Cutting force is also easier to lift the workpiece from the table.
Carbide End Mills The Cemented Carbide End Milling Cutter starts cutting from the maximum chip thickness when milling. This can reduce the heat and reduce the processing of hardened to avoid the polishing effect. Application of the maximum chip thickness is very favorable, and the cutting force is easier to push the workpiece into the carbide end mill to allow the carbide end mill cutter to be cut.
Carbide End Mills During milling, chips are sometimes bonded or welded to the cutting edge and are gathered around the starting edge of the next blade. In the case of reverse milling, chip breaking is easier to be trapped or wedged between the blade and the workpiece, which can cause the blade to break. And when the milling, the same chip will be divided into two, so as not to damage the cutting edge.
Regardless of the requirements of the machine, fixture and workpiece, the milling method is the preferred method.
As the cutting force to keep the workpiece at the same time easy to push the blade forward, so that the milling process of the processing process has certain special requirements. This requires the machine to handle the table feed request by eliminating the backlash. If the tool is pushed into the workpiece, the feed will increase irregularly, resulting in excessive chip thickness and chipping. In this type of application should choose reverse milling. In addition, if the processing margin changes greatly, then select the reverse milling is more favorable. To properly clamp the workpiece, a suitable fixture must be required, and the correct tool size is required for the job. But for the vibration trend, the direction of cutting force is more important.