The Theoretical Calculation Of Cutting Heat And Simulation Of Temperature Field In Near-dry Deep Hole Processing

Near-dry deep hole processing is a process with exceeding non-linear and heat-stress coupled. In deep hole processing the heat is mostly from the distortion of chip (shear plane heat source) and the friction at the tool-chip and tool-work interface (frictional heat source). The both heat source areas are not big, but the temperature in this area is very high. Once some scholar pointed out that the highest temperature could reach 1000℃. The higher cutting temperature is the main reason of the tool's abrasion. And it also can debase the precision of the machined surface and make the machined surface bring residual stress and other flaws.Because of the influence of cutting heat to tool area, work material performance's variety and the quality of machined surface, the research to cutting heat in metal cutting is very important. In this paper, the main job is to study the cutting heat in deep hole processing of single-edge deep hole drilling with chip through it. First of all, based on a number of research models raised, combining of the actual cutting conditions of deep hole processing, a solution for cutting hot is given theoretically. And the main factors of hot-cutting are analyzed, which provides some reference value for the actual machining. Then through the analysis of the temperature field distribution cutting heat is analyzed qualitatively. And general-purpose finite element software (DEFORM) is used for modeling and analysis, an intuitive temperature field distribution is given. Finally the use of single variable method is to list the relationship about the highest cutting temperature and speed, feed rate. By the application of Matlab programming, we can get the curve of the highest temperature in front area and cutting speed, feed rate.The paper's innovation is that based the actual cutting conditions of deep hole processing a solution for cutting hot is given theoretically, especially analyzing the main factors of hot-cutting . Secondly, the finite element software DEFORM is used to simulate the distribution of temperature field for single-edge deep hole drilling with chip through it when deep hole is processed. Finally according to the simulated temperature field distribution maps we can use single variable method to list the relationship about the highest cutting temperature and speed, feed rate. By the application of Matlab programming, we can get the curve of the highest temperature in front area and cutting speed, feed rate. Although considered the curve obtained from the actual condition there is some difference, but the overall trend is still consistent. This can provide a certain reference value for near-dry deep hole processing research in the future.