Design & Analysis of Fork pin & its Assembly in Pneumatic cylinder

Abstract

The traditional fork pin connects the next part in hydraulic/pneumatic cylinder with the help of bolt and nut. But, main problem occurs, when motion is transferred through the existing pin, the nut could be loose due to improper fitting and due to vibrations produced by the piston stroke, may get detached from the assembly. Because of this problem, the assembly may get disassembled and may damage to other parts and leads to catastrophic failure. Another problem considering, tightening & loosening of both nuts consume too much time. So in this research, with used of design of X concept which suggests to replace screw-nut type fasteners with snap fits in DFA approach. So here, the main aim is to replace traditional nut & threaded pin with modern snap on spring fork pin by making effort on high strength to withstand desired motions and emphasizing on ease of locking and unlocking with snapping concept by improving pin stress. So having said that, with the use of CREO modeling, analytical analysis, ANSYs based an alysis, it has been carried out a throughout analysis of fork pin with its assembly of existing design and the modified snap on spring fork pin assembly design by using comparative results with the practical conditions to achieve maximum strength and ease of locking and unlocking.