Research on superficial vibration veins of thin-walled cylinder

As the key component of special equipment, the thin-walled cylinder was particularly easy to vibrate in the machining process. In order to improve vibration veins made in the machining process, taking the thin-walled cylinder cutting system as research object, the experiment modal analysis of thin-walled cylinder cutting system, namely the boring bar and the cutter was carried out using modal test system LMS and hammer hitting method. At least five order natural frequency and mode shape were obtained, so it was obtained that the boring bar finite element model was established using ANSYS, and the finite element analysis of it was carried out, so the relation curve between the boring bar size and stiffness was obtained. The greatest influence on stiffness K was outside diameter D, next was bit cantilever length L, the minimal was inside diameter d. It provided a basis for the boring bar optimization. (author)