Explain each of the following tasks performed by a lathe machine: i) falling; ii) _ boring; iii) reaming; iv) knurling.(8 marks)June/July 2020

i) Facing: Facing is a machining process that is used to create a flat surface on the end of a workpiece. On a lathe, facing is typically done by using a single-point cutting tool that is mounted on the lathe’s tool post. The tool is moved across the face of the workpiece to remove material and create a flat surface.

ii) Boring: Boring is a machining process that is used to create a hole with a precise diameter and depth. On a lathe, boring is typically done by using a single-point cutting tool that is mounted on the lathe’s tool post. The tool is moved into the workpiece to remove material and create the desired hole.

iii) Reaming: Reaming is a machining process that is used to smooth and finish the walls of a hole that has already been created. On a lathe, reaming is typically done by using a reamer, which is a specialized cutting tool that is mounted on the lathe’s tool post. The reamer is rotated and moved into the hole to remove any burrs or roughness and create a smooth finish.

iv) Knurling: Knurling is a machining process that is used to create a pattern of raised ridges on the surface of a workpiece. On a lathe, knurling is typically done by using a knurling tool, which is a specialized tool that is mounted on the lathe’s tool post. The tool is rotated and pressed into the workpiece to create the desired pattern of ridges.