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Machining process of connecting rod parts

Connecting rod parts play a vital role in the mechanical field and are commonly used in engines, vehicle drivelines, industrial machinery and other applications. In order to ensure their accuracy, reliability and performance, the manufacture of connecting rod parts needs to go through several machining processes. In this article, we will introduce the machining processes of connecting rod parts, including milling, turning, drilling, and grinding, to explain how to manufacture high-quality connecting rod parts.

1. Milling

Milling is one of the common processes used to manufacture connecting rod parts. The material is removed layer by layer by rotating the tool to obtain the desired shape and size. Milling machine can perform plane milling, vertical milling and CNC milling. This process is suitable for manufacturing flat surfaces, grooves and holes in connecting rods.


2. Turning

Turning is the process of changing the shape of the workpiece by rotating it and cutting it with a tool. This is the ideal method for producing connecting rod parts with round cross sections, such as crank bearing housings. CNC lathe technology allows precise control of the position and depth of the cutting tool, ensuring high accuracy.


3. Drilling

Drilling is used to create holes in connecting rods. It can include conventional drilling, boring and boring to obtain holes of different shapes and accuracy. Drilling usually requires high axial accuracy to ensure accurate positioning and sizing of the holes.


4. Grinding

Grinding is a high-precision process usually used to provide higher surface finish and dimensional accuracy. By placing a grinding wheel in contact with the workpiece, material can be removed to achieve very high surface quality. This is critical for critical connecting parts such as crank bearing housings.


5. Riveting and welding

In some cases, the manufacture of connecting rod parts may involve riveting or welding. These processes are used to join different parts together, such as cranks to connecting rods. Welding provides a strong connection but requires proper welding skills to ensure quality.


6. Heat treatment

Heat treatment processes improve the hardness, strength and wear resistance of connecting rod parts. Typically, the part is heated to a certain temperature and then cooled rapidly to change its lattice structure. This is a critical process used to ensure the performance of the part under high load conditions.


7. Inspection and quality control

Finally, the process of manufacturing connecting rod parts must include inspection and quality control steps. These steps are used to verify the size, shape, and surface quality of the part to ensure that it meets the design requirements.

The manufacture of connecting rod parts involves a variety of machining processes ranging from CNC milling and CNC turning to drilling, grinding and heat treating. Each process has its own unique application to ensure high accuracy, reliability and performance of the part. By properly selecting and controlling these processes, manufacturers can produce high-quality connecting rod parts for a variety of engineering applications.

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