In this post, We will discuss lathe and its operations.
Lathe and its operations
A lathe is a machine used in shaping several material pieces in the desired shapes. A lathe is a machine that rotates the piece on the axis in order to perform various operations like facing, cutting, deformation, knurling and more.
Lathe Operation Types
Some of the common lathe operations are as follows
The process of removing metal from the end of a workpiece to produce a flat surface is known as Facing. Facing is usually the first step of any lathe operation on the lathe machine. In the facing operation, the metal is cut from the end to make it fit in the right angle of the axis and remove the marks.
As the name suggests, the parallel turning operation is adopted in order to cut the metal parallel to the axis.
Parallel turning is done to decrease the diameter of the metal.
Taper Turning is an operation performed on a lathe that feeds a tool at an angle to the length of the workpiece in order to create a conical shape.
Taper Turning is the process to cut the metal to nearly a cone shape with the help of the compound slide. The Taper Turning is something in between the parallel turning and facing off.
Thread Cutting is also known as threading. Threading is the process of creating the screw thread.
There are many methods of generating threads. Thread cutting on the lathe is an operation that uses a Single-point tool to produce a thread form on a cylinder or cone, the threading process can be done to create external or internal threads (male or female). External threads are known as male threads and the internal threads are known as female threads. In the external thread cutting, the workpiece can either be held in a chuck or mounted between two centers. In the internal thread cutting, the workpiece is held in a chuck. The tool moves across the workpiece linearly, taking chips off the workpiece with each pass.
Parting-off is the operation of cutting a workpiece after it has been machined to the desired size and shape. This operation (Parting-off) uses a blade-like cutting tool plunged directly into the workpiece to cut off the workpiece at a specific length. Parting-off is normally used to remove the finished end of a workpiece from the bar stock that is clamped in the chuck.
The chamfering operation is performed to make the handling safe. Chamfering removes the sharp edges and burrs, and thus makes the handling safe. Chamfering can be done by a form tool having an angle equal to chamfer which is generally kept at 45°. Chamfering is done to protect the end of the workpiece from being damaged and to have a better look. Chamfering is an essential operation done before thread cutting or threading. By performing Chamfering before threading the nut may pass freely on the threaded workpiece.
The Knurling is a manufacturing process. knurling is mainly a roughening of the surface and knurling is done for a better gripping surface, knurling is typically conducted on a lathe by which a pattern of crossed, angled or straight lines are rolled into the material.
A point at which the diameter of the workpiece changes with no taper from one diameter to the other is known as a shoulder. In other words, the shoulder turning is a 90-degree face moving from one diameter to the other.
Lathe Cutting Tools
There are several lathe cutting tools that help in cutting with the lathe machine. The commonly used tools are mentioned below:
Left Cut Tools
Right Cut Tools
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