The theoretical research objectiveis to create prerequisites for the development of new designs boring tools. task which paper is devoted: identification constructive varieties tools; improvement geometric shape conical part tool. Research methods: modeling elastic deformations various novelty work: a design with transitional section from prismatic in form cone and barrel-like proposed introduc...

Abstract Ansys software is used to simulate the welding process of boring bar new cylinder head machine. The indirect coupling method analyze temperature field, then stress field and deformation. It found that for double support structure, highest occurs at outer stiffened plate small diameter end, lowest both ends inner structure. deformation whole structure mainly comes from axial deformation...

The roles and chemistry of pheromones that mediate reproductive behaviors of cerambycid beetles have received remarkably little attention, given the economic importance of many cerambycid species. Until recently, very few volatile sex pheromones and nonvolatile contact pheromones had been identified. However, that situation is changing rapidly, with the number of identified pheromones more than...

The system has for long been in use in Japan. The initial outlay is small, the whole apparatus will cost about Ks. 200 to set up and it can, it is stated, be managed by the ordinary Indian villager. The geological formation of the country when Kazusa wells are operated is mostly sand and red clay and the first water-bearing stratum is reached at an average depth of 300 ft., but the boring can b...

This study investigated the optimization of computer numerical control (CNC) boring operation parameters for aluminum alloy 6061T6 using the grey relational analysis (GRA) method. Nine experimental runs based on an orthogonal array of Taguchi method were performed. The surface properties of roughness average and roughness maximum as well as the roundness were selected as the quality targets. An...