Simulation Study Of The Influence Of Groove Structures Of Tool And Surface Coating On Cutting Process

With the development of modern technology, the machinery manufacturing is continuously developing towards the flexibility, integration, robotization and intelligentization. Application of the advanced manufacturing technology and the numerical control machining of higher efficiency, it requires tools applied to machining with higher efficiency, higher precision, higher reliability and specialization. Good breaking chip is a kind of important method and key technology to reach the request. At present, using broken grooves to break chips is the most economical and prevalent method.In this paper, it presents the significance of chip-breaking groove studies, summarizes the background of chip controlling and chip-breaking groove at home and abroad. Simulating by the finite element method, this paper detailedly analyzed the influence of broken grooves on cutting process and researched the disciplinarian of the influence of geometrical parameters of chip-breaking groove (height of boss, the ratio of the groove width to depth) and coating on cutting forces, stress, strain and temperature. Then simulation was set up boundary condition mainly according to the case of actual cutting machining. And the consequence was consistent with the expected aim comparing cutting simulation by using optimized groove parameters with experimentation values. Investigations show that the increasing height of boss in permission range can help the chips to be broken. The host cutting force is lower comparing the groove of arc curve with the groove of line. When the ratio of the groove width to depth is about 9. 0, the stress and strain of chips are the most value and the chips are easily broken. The coating tool may decrease cutting forces comparing without coating, but the temperature of the place contacting with the chips is higher in the surface of coating tool.These conclusions help to go deep into know cutting mechanism, understand the action of every groove parameter during cutting process, and afford theory direction for the design, optimization and selection of the complex groove. At the same time, the problems coming forth during designing and manufacturing are analyzed and forecasted, and it also could bring forward mending measure. The structure parameters of groove are realized optimization from research to manufacturing. This helps to resolve the problems such as long exploitation periods, excessive material wastage, inefficient work and high machining cost that are brought forth using Trial-and-error Method to study chip-break of groove, and reach to improve economy profit.In the end, this paper concludes the research, and expects about the researching of groove mathematic model and the FEM of the cutting process.