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Machining of Metals
Published in Sherif D. El Wakil, Processes and Design for Manufacturing, 2019
Centerless grinding involves passing a cylindrical workpiece, which is supported by a rest blade, between two wheels (i.e., the grinding wheel and the regulating or feed wheel). The grinding wheel does the actual grinding, while the regulating wheel is responsible for rotating the workpiece as well as generating the longitudinal feed. This is possible because of the frictional characteristics of this wheel, which is usually made of rubber-bonded abrasive. As can be seen in Figure 11.49, the axis of the regulating wheel is tilted at a slight angle with the axis of the grinding wheel. Consequently, the peripheral velocity of the regulating wheel can be resolved into two components: workpiece rotational speed and longitudinal feed. These can be given by the following equations: Vworkpiece=Vregulatingwheel×cos∝Axialfeed=Vregulatingwheel×C×sin∝
Metal-Cutting Operations
Published in David A. Stephenson, John S. Agapiou, Metal Cutting Theory and Practice, 2018
David A. Stephenson, John S. Agapiou
Centerless grinding is used instead of cylindrical grinding when it is not possible to place centering holes in the part. Centerless grinding requires less grinding stock, can take heavier cuts, and is preferred for long, slender shafts. The centerless operation produces low cylindricity errors and consistent surface finish. It provides a better size control than cylindrical grinding. This process is necessary for parts which must rotate at high accuracy in a bearing or wear situation such as valves, camshafts, spindle shafts, etc. It is important to note that in centerless grinding the ground surface, rather than the rotational axis, is the reference datum.
Glossary
Published in Jerry P. Byers, Metalworking Fluids, Third Edition, 2018
centerless grinding: a process for grinding cylindrical parts between two abrasive wheels, a grinding wheel that cuts the metal and a regulating wheel that controls the speed and horizontal movement of the part. The part is supported from underneath by a work rest blade
Influence of MQL on performance evaluation of EN19 steel under centreless grinding
Published in Materials and Manufacturing Processes, 2022
N.E. Arun kumar, A. Suresh Babu, M. Subramanian, N Arunkumar
Here, the centerless grinding process flourished as an acceptable solution that could satisfy the above queries.[2] In the view of commercial nature has the process also suggested us with the appropriate surface morphology with precision.[3,4] This is an efficient superfinishing process. The centerless grinding process involves a material removal with the help of the numerous abrasive grains as a multipoint cutting tool bonded together with the bonding material. The type of bond and the abrasives are chosen according to the work material that needed to be superfinished and also the working environment, since the properties such as hardness, brittleness, ductility, tensile strength, and properties of the tool determine the material removal ability and surface finish.[5]