What is turning machining process？Turning is a machining process that involves the removal of material from a workpiece by rotating it against a cutting tool. The cutting tool is usually stationary, and the workpiece is rotated on a lathe. The process is commonly used to create cylindrical parts, such as shafts, threads, and holes.
turning machining process
The process involves the following steps:
- Mounting the workpiece on the lathe: The workpiece is mounted on the lathe between centers, held in a chuck or a collet, or secured by other means.
- Selecting the cutting tool: A cutting tool is selected based on the material and shape of the workpiece. The cutting tool is usually made from high-speed steel, carbide, or ceramic.
- Setting the cutting parameters: The cutting parameters, such as the cutting speed, feed rate, and depth of cut, are set based on the material and dimensions of the workpiece.
- Starting the lathe: The lathe is started, and the workpiece is rotated at the desired speed.
- Engaging the cutting tool: The cutting tool is brought into contact with the workpiece, and material is removed from the workpiece to create the desired shape.
- Finishing the part: The process continues until the desired shape is achieved. The part may be finished with a final pass or by using a finishing tool.
- Removing the part: The finished part is removed from the lathe, and any necessary post-processing operations, such as deburring, may be performed.
turning machining principles
The principles of turning involve the following:
- Cutting tool geometry: The shape, size, and angle of the cutting tool play a crucial role in the turning process. The cutting tool must be properly shaped and angled to ensure efficient material removal and to prevent the tool from rubbing against the workpiece.
- Cutting speed: The speed at which the cutting tool rotates around the workpiece is an important factor in turning. The cutting speed must be high enough to ensure efficient material removal, but not so high that the tool becomes overheated and loses its cutting edge.
- Feed rate: The rate at which the cutting tool moves along the surface of the workpiece is also critical in turning. The feed rate must be carefully controlled to ensure that the tool removes material at a steady rate, without causing excessive wear on the tool or the workpiece.
- Depth of cut: The depth of cut refers to the amount of material that is removed with each pass of the cutting tool. The depth of cut must be carefully controlled to ensure that the tool removes enough material to achieve the desired shape and size of the workpiece, without causing excessive wear on the tool or the workpiece.
- Tool wear: The cutting tool will gradually wear down over time as it is used in the turning process. It is important to monitor the wear on the tool and to replace it when necessary to ensure that the turning process remains efficient and accurate.
- Workpiece material: The type of material that the workpiece is made of will also affect the turning process. Different materials will require different cutting speeds, feed rates, and depths of cut to achieve the desired results.
CNC machines offer several advantages over manual machines, including greater accuracy, repeatability, and productivity. They can also be programmed to produce complex parts with multiple features and geometries.
Overall, turning is a versatile machining process that can be used to create a wide range of shapes and sizes, from simple cylindrical parts to complex geometries. It is commonly used in the manufacturing of parts for automotive, aerospace, and medical industries, among others.
