Any object has three dimensions, viz., length, width and thickness. A projection is defined as a representation of an object on a two dimensional plane. The projections of an object…

The true projection of a threaded portion of a part consists of a series of helices and it takes considerable time to draw them. Hence it is the usual practice…

Certain draughting conventions are used to represent materials in section and machine elements in engineering drawings. Materials As a variety of materials are used for machine components in engineering applications,…

In order to show the inner details of a machine component, the object is imagined to be cut by a cutting plane and the section is viewed after the removal…

Engineering drawings are to be prepared on standard size drawing sheets. The correct shape and size of the object can be visualized from the understanding of not only the views of…

1. Chucks Workpieces are held to the headstock spindle of the lathe with chucks, faceplates, or lathe centers. A lathe chuck is a device that exerts pressure on the workpiece to hold it…