CNC fundamentals essays

CNC fundamentals essays 10 Improvements to the Process 13 PART 1: SINGLE COMPONENT MANUFACTURE The aim of this work is to provide an understanding of the principles in manual part programming, with the use of a state of the art CBC vertical machining centre, together with process planning and machine selection for different components. In order to fulfil this aim, it was necessary to carry out various tasks, including process planning and part programming, as well as spotting any errors prior to machining. The first task involved producing only one component, using the Denford Triac Fanuc machine, located in the Wolfson School of Mechanical and Manufacturing Engineering Advanced Manufacturing Laboratory. The aim of this task was to develop part programming skills, and to give a contrast in manufacturing techniques when compared to tasks two and three. The second task was to plan the process for producing 100,000 of this component every year, which is approximately 25 components per hour . This task gives the student an idea of the economics involved in long run manufacture, and how it compares to the single component manufacture, as described in task 1. The third task in this assignment was to plan the process for a short rung of multi-faced components, including setting up the machine and a discussion of the fixturing and tooling involved. In order to make this coursework economic and relevant, the component part program was written as if the part were to be manufactured in aluminium, but it was actually manufactured in resin. This was also necessary to avoid any damage to tools: the students involved in this assignment were inexperienced in this field, therefore programming errors were likely. A diagram of the part to be manufactured can be found overleaf (figure 2). In order to begin the planning, it was necessary to decide which tools had to be used. The tool list was as follows: Due to the geometry of the part,...