Ultrasonic Punching Car Bumper
Lightweight construction is an important trend in the automotive industry. As well as cutting down on weight, it enables significant cost savings. However, conventional separation methods struggle to meet requirements to produce high-quality paint-finished Class A surfaces in the automotive industry, for example. Ultrasonic cutting or punching produces much better results. These methods enable the openings for parking sensors or headlamp cleaning systems with radial embossing, for example, to be punched or cut directly into ready painted bumpers, achieving visually outstanding quality.
It's easy to understand how the process works: the ultrasonic vibrations produced by a piezo-converter cause a sonotrode to vibrate at high frequency; this is particularly effective in resonance yet at the same time requires little power (Figure 5). As the high-precision mechanics can be finely-tuned, the ultrasonic vibrations are not able to heat and deform the paint-finished plastic in the cutting zone. As a result, the cut remains neat and less force (compared with mechanical punching) is required. The process is thus reliable and the finished result looks fantastic.
Furthermore, this process also offers additional advantages which make it particularly suitable for cutting into paint-finished lightweight bumpers. This combination means that in contrast to mechanical milling, ultrasonic cutting does not cause any material loss, nor does it damage the paint-finished part. As there are no chips and the cut edges are smooth and clean, time and money does not have to be spent on rework. No cutting medium is required, as would be the case with water jet cutting, for example. This means that the material being cut remains dry and clean. The cutting depth can be precision-adjusted as required (scoring). What's more, ultrasonic cutting is also quiet, so noise protection measures are not necessary. In addition, in contrast to laser cutting, the surface of the material being cut does not have to fulfil any special quality criteria. The process does not produce combustion gases, and the cut edges are rounded off rather than looking burnt. Even the acquisition and operating costs are extremely low compared to other processes. Therefore, this combination makes ultrasonic cutting a practical solution not only for cutting out openings in the bumpers of the Urus but also for other many lightweight applications.
Contact Person: Ms. Hogo Lv
Tel: 0086-15158107730
Fax: 86-571-88635972