Stainless steel fasteners are a common mechanical parts, widely used in a variety of mechanical equipment and daily life. The traditional processing method has some defects, such as low processing efficiency, poor surface quality, material waste and so on. In order to solve these problems, researchers began to explore ultrasonic vibration assisted machining technology. By introducing ultrasonic vibration in the machining process, this technology can significantly improve the machining efficiency, reduce surface roughness and reduce material waste, and has high practical value.
principle
The basic principle of ultrasonic vibration assisted machining technology is to use the characteristics of ultrasonic vibration to generate high-frequency vibration in the processing process, thereby changing the physical and chemical properties of the processing process. Its main principle includes the following aspects:
Ultrasonic cavitation: ultrasonic vibration energy can produce a powerful shock wave, so that the liquid or gas in the processing area cavitation phenomenon, the formation of tiny bubbles. These bubbles will have a strong impact force when they burst in an instant, producing a strong impact on the surface of the workpiece, thereby accelerating the removal of the material.
Ultrasonic emulsification: ultrasonic vibration energy can emulsify the liquid processing medium to form a uniform emulsion, making the processing process more stable and controllable.
Ultrasonic strengthening: ultrasonic vibration energy can change the internal structure of the material and improve the hardness, wear resistance and fatigue resistance of the material.
Apparatus and method
The device of ultrasonic vibration assisted machining technology mainly includes ultrasonic generator, transducer, amplitude converter and tools. The experimental method includes the following steps:
Prepare stainless steel fastener materials and process liquid media.
The ultrasonic generator is connected with the transducer, amplitude converter and tool head, and the working frequency and power are adjusted.
Put the tool head in close contact with the workpiece, start the ultrasonic generator, and start machining.
Record various data during processing, such as processing time, material removal, surface roughness, etc.
Test and analyze the workpiece after processing, such as metallographic structure, hardness, wear resistance, etc.
Experimental results and analysis
Through the experiment, we get the following experimental results:
Under the same processing conditions, the ultrasonic vibration assisted processing technology can significantly improve the processing efficiency and reduce the surface roughness.
With the increase of processing time, the amount of material removal and surface roughness are gradually reduced, but when the processing time is too long, the surface quality will decline.
By optimizing the parameters of the ultrasonic generator and the structure of the tool head, the processing efficiency and surface quality can be further improved.
Through this experiment, we can draw the following conclusions:
The use of ultrasonic vibration assisted processing technology can effectively improve the processing efficiency of stainless steel fasteners and reduce surface roughness, improve the quality and performance of the workpiece.
Optimizing the parameters of the ultrasonic generator and tool head can further improve the processing efficiency and surface quality, providing more possibilities for practical applications.
Looking forward to the future, we believe that ultrasonic vibration assisted processing technology has broad application prospects in the field of stainless steel fastener manufacturing. In the future, the theoretical basis and practical application of this technology can be further studied, including optimizing machining parameters, improving process performance and controlling dimensional accuracy. At the same time, with the continuous development of technology, this efficient and environmentally friendly processing method is expected to be applied and developed in more fields.
