Research On Temperature Field In Plunging Milling Ti Alloy At Cooling Condition Based On Abaqus/explicit

Plunge milling is one of the ways by which the difficult machine materials such as titanium are machined. In this paper, the orthogonal cutting model is build based on insert discrete. The finite element model is build to study the cutting temperature field. The mainly content includes as follows:The cutting edges is divided into the elementary cutting tool(ECT), the cutting velocity is Perpendicular to the cutting edge on every ECT, the cutting mechanism works like an orthogonal cutting processing. The three dimension problem is simplified as two dimension orthogonal cutting. The cutting force data acting on each ECT is extracted and the located cutting force is determined. The coulomb friction model is employed in tool-chip interface, the J–C constitution model represents the material model.The cutting temperature in plunge milling titanium alloy is measured by an embedded artificial thermocouple, the data is acquired by the cutting temperature testing and analysis system. The date gotten in experiment provides a practical basis for finite element simulation.The automatic chip separation is realized by setting the Arbitrary Lagrangian Eulerian(ALE) model; The tool tip with round corner is build in finite elment model for reality. There are two analysis steps in simulation process: ALE model with pure Lagrangian boundaries are build at first to simulate chip formation from the incipient to steady state; in second analysis step the workpiece is considered to be the fluid which flows from the rake face and rear face of tool. Combining features of pure Lagrangian formulation and Eulerian formulation, the Lagrangin-Eulerian formulation solves the general problem that the computation terminated.The simulation result is verified by test, indicating the finite model is accurate and reliable. In this paper the Lagrangian-Eulerian model can solve the problem of serve mesh distortion, the model has important significance in achieving the cutting force,tool wear,stress and strain of workpiece.