MECHANICAL WORKSHOP PRACTICE 4 (MACHINING) WORKBOOK
Surface Grinding
Surface grinding process is generally the most common grinding techniques. The term surface grinding assign that any process which accurately processes or grinds a surface. Surface grinding methods are included horizontal spindle, vertical spindle, vertical spindle rotary grinding, vertical spindle single disk and vertical head grinding. Parts or workpieces may require a grinding process if there is a need to produce a flat surface with accurate thickness tolerance. Surface grinding also able to provide a part with specified and very smooth surface roughness. Surface grinding can be used for cutting tool sharpening. Surface grinding is used primarily for grinding and to obtain a desired flat surface finish or smoothness, precise angularity, perpendicularity and flatness tolerances. Surface grinding machines and processes where first developed to manufacture and removed material from very hard metals. A surface grinding machine normally consists of a magnetic chuck, which resembles a table, the grinding wheel that is attached to a rotating spindle, and a few handwheels for manually operated. A straight wheel is mounted on the horizontal spindle of the grinder. Transverse grinding occurs as the table reciprocates longitudinally and feeds laterally after each stroke. Surface grinding machine and all parts includes is illustrates in a diagram of Figure 9. The grinding wheel used is depends on the component being ground. Different grinding wheel compound for different type of material to be ground.
Figure 9. Parts of surface grinding machine, 2020, Retrieved from https://www.youtube.com/watch?v=mGR7oszv9SE/
On the surface grinding machine, the workpiece is placed on a magnetic chuck attached to a worktable of the grinder. The chuck is activated either by a switch or lever. When the chuck is activated, the part will then hold firmly to the magnetic chuck. Non-magnetic workpieces are held by vices or fixtures. 13
