With the rapid development of the automotive industry, CNC machine tools play a very key role in it. The automotive industry not only relies on the technological progress of precision automotive CNC machining, but also drives its development. CNC machine tools are used in almost every production link of precision auto parts.
1. Engine parts
CNC machining (including CNC milling, CNC turning, wire EDM, and other processes) can be used to manufacture several important components for automotive internal combustion engines. For example, a large aluminum alloy block can be machined into an engine block (or cylinder block), a metal structure that includes an engine cylinder in which a moving piston travels up and down.
2. Precision parts in the gearbox
The gearbox is a very critical transmission mechanism in the car, and it has a large number of gears and shaft parts. In high-quality automotive manufacturing, all gear and shaft workpieces in transmissions can now be manufactured directly from CNC machines. Significant advantages when machining high-precision machined parts such as gears. Today, they are often manufactured using the process of shaping, shaving and hobbing. Therefore, they have high machining accuracy and high production efficiency. After the shaft is processed into a stepped shaft, there are processing techniques such as milling key grooves and wire drawing splines, which greatly improves the matching accuracy. After the gearbox housing is cast, the end faces and shaft holes must be milled on a CNC machining center that ensures the spacing between the shafts.
3. Other parts
Several other automotive parts can be machined by CNC machines, including but not limited to suspension components, exhaust components, carburetor housings, fluid system components, bushings, and valve seats. Manufacturing techniques are also particularly useful for the customization of vehicles and their specific auto parts, as CAD allows for quick changes to part designs and the manufacture of custom parts.
Advantages of using CNC machine tools in the automotive industry
Compared with manual machine tools, one of the more significant advantages of CNC machine tools in the manufacture of auto parts is the processing speed, and the delivery time is particularly short during small batch production. Since machining is automated by the computer, there is no need to factor human constraints such as fatigue into the process.
The use of CNC machine tools
However, conventional machining may be faster in some cases, such as when only a single unit of an object needs to be produced. In these cases, the time required to create computer instructions can exceed the time required to manually machine individual parts.
Another reason automakers favor CNC machines is the accuracy and precision of the process. The digitization and autonomy of the process leaves little chance of error, while ultra-high-precision CNC machines can provide tolerances of ±0.001 inches. Understandably, the automotive industry often requires such fine tolerances because failure of an engine or other critical components can have serious consequences for the end user. The production of end-use metal parts often requires precision machining of automotive components, although looser tolerances are available for prototype CNC parts.
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