Manufacturing Processes:
The Lathe
The design process for the lathe can either be very simple for parts such as cylindrical pins or very complex for parts such as wood finials for banisters. First, as with any process, a design has to be made. For simple parts, it may be just a radius and tolerance. For parts with multiple radii, such as little plastic people, a CAD drawing may be required to give the operature a guide on the curve of the radius change.
To make the part, stock must be chosen. The type of stock (metal and alloy, type of wood, type of plastic) is normally chosen by the person designing the part. From the design and type of stock, the machinist can normally give an estimate of how long the part will take to make. They may also suggest recommendations which would make the production easier and less expensive. Depending on if these changes will affect the functionality of the part, the design may change. After the design is finalized, machining actually begins.
In order to shape the stock into the final design, many variables have to be controlled. First is the radius or diameter of the part. This can be measured and controlled by either calipers or the rulers on the lathe. Also, a proper tool must be selected to achieve the proper cut. Finally, speed of rotation must be controlled depending on the material.
Group Members: Robert Andre and John Bowler