چکیده مقاله
Using an underwater reflector is a proper technique for concentrated narrow acoustic beams, where an acoustic transducer placed at the focal point of the reflector The above mentioned assembly transducer & reflector is called acoustic antenna The acoustic antenna has several usages in some sonar SOund NAvigation and Ranging systems Shape of the reflector plays an important role in the proposed technique Thus, in this work, the parabolic reflector that has various advantages is selected and the different manufacturing processes for producing the reflector are investigated Among these, metal spinning shows itself as an effective and inexpensive process to make a parabolic reflector A typical parabolic reflector is also made by spin forming and the advantages/disadvantages of the process are examined The considered theoretical curve and the spin formed curve are compared and the effects of deviations on the reflector focal point and depth of the reflector are also studied It is worth to mention that the spin formed curve is estimated by an accurate coordinate measuring machine Based on the present results, one can find that the metal spinning process is a quick and economical way to produce complex forms that are symmetrical about a central axis Moreover, this technique can be applied to the various metals, even on the exotic ones such as stainless steel 316 and titanium that are very hard to form
کلیدواژهها
نویسندگان
A. Fallahi
Chief Designer Engineer, Shiraz Electronics Industries, Shiraz, Iran
A. Bitaab
Graduate Student, Malek Ashtar University of Technology, Shiraz, Iran
شیوه ارجاع
Fallahi, A. and Bitaab, A.,1390,Metal Spinning: an Effective Manufacturing Process to Fabricate Underwater Parabolic Reflector,12th Iranian Conference on Manufacturing Engineering (ICME 2010),Tehran
ارائهشده در
مجموعه مقالات دوازدهمین کنفرانس ملی مهندسی ساخت و تولید ایران6 دی 1390 · تهران