Shaft production requires various operations from forging to machining, tailored for diverse mechanical roles and requirements.
Shaft manufacturing typically involves various methods, each suited to different applications, materials, and design requirements. The common types of shaft manufacturing methods include:
- CNC Turning: This is a basic machining process where a cutting tool removes material from a rotating work piece to shape the shaft. It’s commonly used for cylindrical shafts and can achieve high precision.
- CNC Milling: Milling involves rotating cutting tools and is used to create features like keyways, slots, or flats on shafts.
- Forging: Forging is a process where metal is heated and shaped by plastic deformation, typically using a hammer or die. Forged shafts are known for their strength and grain structure.
- Casting: In casting, molten metal is poured into a mold in the shape of the shaft. This method is suitable for complex shapes and large production runs.
- Extrusion: Extrusion is used for creating long shafts with uniform cross-sections. Metal is forced through a die to achieve the desired shape.
- Cold Drawing: This is a process where the shaft material is pulled through a die to reduce its diameter and improve surface finish and dimensional accuracy.
- Grinding: Grinding is a finishing process used to achieve precise dimensions and surface finishes. It is often used after other manufacturing processes.
The common types of shafts are;
- Transmission Shafts: These include counter shafts, line shafts, and overhead shafts. They are primarily used to transmit power between the source and the machine absorbing power. The transmission shafts are used to rotate the gears and provide mechanical power for various applications.
- Machine Shafts: These are an integral part of the machine itself. The best examples are the shafts used in motors and gearboxes.
- Spindle: A spindle is a type of shaft that is used to hold and drive work pieces in, for example, lathe machines. They are designed to withstand high torsional loads and are precision-made.
- Hollow Shafts: These shafts are similar to solid shafts but are hollow in the middle. They are used in applications where weight is a concern, as they are lighter than solid shafts of the same strength.
- Stepped Shafts: These shafts have different diameters in different sections. They are often used in machines where the shaft needs to perform different functions, requiring various diameters.
- Splined Shafts: These have longitudinal grooves or keys on their surface which allow for the connection of gears, pulleys, or other components that can slide or rotate on the shaft.
Novelty Structures offers contract shaft manufacturing services for OEMs and various applications.