关键词: 滑移门；公差分析；开门位置；影响因素

Abstract: After serie production of a vehicle model, the vehicle has the abnormal sound of upper hinge scratching upper guide rail, when sliding door is in the process of opening, the upper hinge of sliding door falls off from the upper guide rail. Based on software 3DCS, the close state and open state of sliding doors are studied to give optimization suggestions from parts tolerances, and find the most important contribution factors, matching surface tolerance of upper guide rail, matching surface tolerance of lower guide rail, tolerance of matching surface between sliding door inner panel and upper hinge and upper hinge roller profile tolerance which provide optimization direction and technical support for actual start production on site.

Key words: Sliding door; Tolerance analysis; Open state; Contribution factor