Research On Heating Density Function & Temperature Field Mathematical Model For Milling Insert With 3D Groove

Milling temperature is an important reason of wear and fracture of milling insert. For many years, people have carried on a large amount of research and made a lot of important achievements on the milling temperature. But most of them are limited in the flat rake face milling insert. In the light of this situation, systematical experimental, theoretical research and numerical analysis about which heating density function & temperature field and their application for the milling insert with 3D groove are processed in the thesis. The thesis'summaries as follow: 1. The milling temperature experiment was processed by improved manual thermocouple method. The milling temperature of flat rake face milling insert and waved-edge milling insert under various cutting parameter is dynamically collected. According to the data derived from the experiment, the experimental formula which milling temperature changes over time is obtained by using the Matlab software. The milling temperature of two kinds of milling insert under the same cutting parameters is contrasted and analyzed. 2. Integrated the analysis result of milling force and temperature's experiment, the surface heating density function and temperature field mathematic model of the milling insert is derived on the base of dimensional analysis and heat transfer theories, and the applications is programmed using C++Builder, which offer the second type of boundary condition for the finite element analysis of milling insert's temperature field. 3. In consideration of the influence of medium's flow state in the environment, the convective heat-transfer coefficient of air around the milling insert which offers the third type of boundary condition for the finite element analysis of milling insert's temperature field is set up based on the fluid dynamics and heat transfer. 4. The ANSYS secondary developments which use to 3D transient thermal analysis of two kinds of milling inserts is done by it's inner developing tools (ANSYS Parametric Design Language, APDL and User Interface Design Language, UIDL), and the rule of milling insert's temperature distribution at different time in the cutting cycle is found, which is the foundation of discussing the reason of tool dilapidation and reconstructing groove. 5. The temperature field's finite element analysis being premise, the fuzzy comprehensive evaluation for temperature field and thermal stress analysis is made, which could compare the quality of groove in different respects. At the same time, the quantitative mathematic model between the adhering disrepair and milling temperature is derived by mean of numerical analysis based on the experiment of adhering disrepair when the milling inserts are cutting 3Cr-1Mo-1/4V steel.