Research On The Process Of Semi-circular Shape Crane Boom And Computer Simulation

Crane is regarded as an important construction machinery, and crane boom impact the whole performance of the Crane, moreover the cross section shape affect the quality of crane boom. Semi-circle section of the crane boom has a high carrying capacity. However, the forming process of traditional crane is more complicated, multi-forming steps, low efficiency and poor quality. According to these shortcomings, this paper studies the forming process of semi-circle with finite element technology, achieves good results. The main content and result are as follows:(1)According to actual problems, such as more multi-forming, non-smooth arc shape, sheet interfering with punch, sheet metal warpage. Aim at solving these problems, this paper proposed some methods for the bending process, such as test method, virtual on-mode method, and mixed bending method.(2)Use finite element technology to analyze the forming process and improve the process. The simulation results meet the production requirements and multi-process reduce significantly compared with the traditional process. Because the size of punch use in simulation is still less than the theoretical size, the arc is not smooth and poor quality of the workpiece.(3)A punch with a arc can achieve only one smooth workpeice, so design a double circular punch which can forming more smooth workpieces, thereby improve efficiency in use of it. Use finite element technology to analyze the forming process of two different radius of workpiece. The simulation results meet the production requirements and the arc smooth level.The experiments prove the correctness of process and the model. So the new forming process improve production efficiency and workpiece quality, and the arc is smooth .