Which of the following interactions is expected to produce chip during a grinding process?

Explanation:

Grinding Process:

• Grinding is a machining process that uses an abrasive wheel as the cutting tool to remove material from a workpiece surface. The abrasive grains on the grinding wheel's surface act as cutting edges, interacting with the workpiece to produce chips. This process is widely used in manufacturing for precision machining, finishing surfaces, and achieving tight tolerances. The interaction that primarily produces chips during grinding involves the abrasive grit and the workpiece material.

Grit-workpiece

• The interaction between the grit and the workpiece is responsible for the removal of material in the form of chips during the grinding process. The abrasive grits embedded in the grinding wheel's surface serve as cutting tools. When the grinding wheel rotates and comes into contact with the workpiece, the abrasive grits cut into the material, shearing off tiny chips. This cutting mechanism is similar to conventional machining processes, where a cutting tool removes material to shape the workpiece. The following steps outline how this interaction produces chips:
  • Contact between Grit and Workpiece: As the grinding wheel rotates, individual abrasive grits come into contact with the workpiece surface. The pressure exerted by the wheel forces the grits into the material.
  • Material Penetration: The sharp edges of the abrasive grits penetrate the workpiece surface, removing material in the form of chips. The depth of penetration depends on factors such as grit size, wheel speed, feed rate, and the material properties of the workpiece.
  • Chip Formation: The material undergoes plastic deformation and shearing due to the high-pressure and high-speed interaction between the grit and the workpiece. This results in the formation of small chips, which are carried away by the grinding wheel or coolant.
  • Surface Finish: The continuous engagement of abrasive grits with the workpiece surface generates a smooth and precise finish. The size and distribution of the grits significantly influence the surface quality and material removal rate.