塞拉门机构中丝杠磨损分析

丝杠的磨损过程与润滑状态、受力、材料等多种方面有关,文章以塞拉门机构中丝杠螺母副为例,定量的研究丝杠的磨损量。首先分析确定丝杠的磨损类型为磨粒磨损,通过simulation仿真确定丝杠最大允许磨损深度为设计尺寸Δ。基于Archard磨损模型对丝杠的磨损建立磨损模型,同时建立丝杠受力模型,通过计算得出保证丝杠在允许磨损范围Δ内丝杠表面硬度至少应为401.85HV。最终通过寿命试验,将试验现象与验证理论计算进行拟合,对后续塞拉门机构丝杠选材及表面处理提供了一定参考价值。

Wear analysis of the Lead screw of the Sliding Plug door Mechanism

The wear process of the lead screw is related to the lubrication state,stress,material and other aspects.This paper takes the lead screw nut pair in the lead screw of the sliding gate mechanism as an example to quantitatively study the wear amount of the lead screw.Firstly,the wear type of the lead screw is determined to be abrasive wear,and the maximum allowable wear depth of the lead screw is determined to be the design dimensionΔby simulation.Based on the arcard wear model,the wear model of the lead screw is established,and the stress model of the lead screw is established.Through calculation,the surface hardness of the lead screw in the allowable wear rangeΔis at least 401.85 HV.Finally,through the life test,the test phenomenon is fitted with the verification theoretical calculation,which provides a certain reference value for the selection of screw material and surface treatment of the subsequent sliding gate mechanism.