MECHANICAL WORKSHOP PRACTICE 4 (MACHINING) WORKBOOK
Among of all the grinding machine categories, there are two of the most common ones are surface and cylindrical grinding. Therefore, a more detailed discussion and description in the next paragraph will relate to these two types of machines.
Cylindrical Grinding
The operation of cylindrical grinding is carried out on a cylindrical grinding machine as in Figure 6, either a plain-type grinding machine or the universal-type grinding machine. Cylindrical grinding process is used to shape the outer surface of a workpiece. This process is mostly used to grind the surface of cylindrical shape workpiece. The surfaces may be straight, tapered or contoured. Cylindrical grinding operations resemble the lathe-turning operations. These machines replace the lathe in material removal operation when the workpiece is hardened or when extreme accuracy and superior finish are required.
Figure 6.Illustration of cylindrical grinding machine and the parts, 2020, Retrieved from https://www.youtube.com/watch?v=lZH5kpJHBXg/
In cylindrical grinding operation, the workpiece is mounted between two centers. Following the Figure 6, one center is located on the headstock and the other center is on the tailstock. Both are rotated and revolved once the machine is turn on. The workpiece centers can transverse at various feeds so that the entire length of the workpiece passes to the wheel or in front of the wheel. During the grinding, the workpiece is fed longitudinally against the rotating grinding wheel. As the workpiece revolves, the grinding wheel which rotates faster in the opposite direction, is brought into contact with the workpiece. Cylindrical grinders have one wheelhead attached with spindle and 11
