Ulträäniporaukset

Ulträäniporaukset, commonly translated as ultrasonic drilling, is a non-traditional machining process that utilizes high-frequency vibrations to remove material. This technique is particularly effective for drilling small, precise holes in hard and brittle materials that are difficult to machine using conventional methods. The process involves a rotating tool bit that is simultaneously subjected to ultrasonic vibrations. These vibrations, typically in the range of 20 to 40 kHz, cause the abrasive slurry circulating around the tool to impact the workpiece at a high rate, effectively grinding away material.

The abrasive slurry, often a mixture of water and fine abrasive particles such as silicon carbide or aluminum oxide, plays a crucial role in the material removal process. The ultrasonic vibrations enhance the kinetic energy of the abrasive particles, leading to efficient cutting. Advantages of ulträäniporaukset include its ability to achieve high precision and surface finish, minimal heat generation, and reduced mechanical stress on the workpiece. This makes it suitable for delicate components and materials prone to cracking, such as ceramics, glass, semiconductors, and hard metals. The process can also be used for drilling blind holes and creating complex shapes.