Study on the Calculation of Hole/Pin Floating Deviation for “Two Pins on One Side”

Abstract

Abstract “Two pins on one side” is a common clamping method in industrial production, but due to the presence of hole/pin clearance, mounting features on the part are often misaligned due to hole/pin float. To ensure the subsequent assembly of the part, the amount of deviation of the hole/pin float must be calculated to quantify the effective mounting space of the mounting feature. In this study, based on the hole/pin float model, the maximum deviations of 0.0368 mm, 0.0545 mm, 0.0520 mm, and 0.0786 mm were calculated for hole/pin float based on automotive sheet metal parts. The study of the amount of deviation of hole/pin floating is carried out to give a solution to the problem of fixture design in engineering practice.