Control of milling in the mechanical load

This is the third article introduces the application of metal cutting tool and machining process of load series. The first article mainly introduces the basic concept of metal cutting in the turning and cutter groove type, feeding and the relationship between the mechanical load. The second article analyzes the milling cutter location and the cutter path effect on the mechanical load. This article continues to explore milling, explain in intermittent cutting process is given priority to with milling, the selection of cutting tools and cutting parameters on the heat what effect, absorption, and control. Heat problem Produced by the metal cutting in the cutting zone temperature as high as 800 to 900 degrees Celsius, in the cutting area, cutting edge will cause the deformation of workpiece material for removal. In the continuous turning processing, heat to stabilize the linear way. Cutter tooth intermittently, by contrast, cut cut and work piece material, the temperature of the cutting edge will alternately rising and falling. Processing system components will absorb the heat generated by the metal cutting process. In general, 10% of the heat into the workpiece, 10% into the chip, 10% into the tool. The best situation is to chip away most of the heat, because of the high temperature will shorten the tool life, and processed by the damaged parts.

Workpiece materials of different thermal conductivity as well as other processing factors, will be a significant influence on the distribution of heat. For example, high temperature alloy of poor thermal conductivity. When the poor thermal conductivity of workpieces, can increase the heat of the incoming tools. In addition, processing hardness higher than processing low hardness material to produce more heat. Under normal circumstances, higher cutting speed will increase the production of heat, and higher feeding areas affected by the high temperature in the cutting edge. Double spindle machining center