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分体式凸轮轴球轴承座优化设计及研究

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为最大限度提升凸轮轴球轴承的减摩收益,重点优化了分体式轴承座结构设计,采用 CAE 和工艺试验手段验证了球轴承变形量、轴承座上下盖的贴合间隙以及凸轮轴盘动扭矩。结果表明,轴承座与球轴承外圈过盈量、轴承座固定螺栓的位置、轴承座的刚度对球轴承的减摩有显著影响,优化后的分体式轴承座结构能显著降低球轴承的外圈变形,降低轴承座上下盖的贴合间隙,从而降低球轴承内部的卡滞效应,提升滚动摩擦减摩收益。
Optimization Design and Research of Split Camshaft Ball Bearing Seat
In order to maximize the friction reduction benefits of camshaft ball bearings,the structural design of the split type bearing seat was optimized.CAE and process testing methods were used to verify the deforma-tion of the ball bearing,the fit clearance between the upper and lower covers of the bearing seat,and the dynamic torque of the camshaft.The results show that the interference between the bearing seat and the outer ring of the ball bearing,the position of the fixing bolts of the bearing seat,and the stiffness of the bearing seat have a sig-nificant impact on the friction reduction benefits of the ball bearing.The optimized split type bearing seat struc-ture can significantly reduce the deformation of the outer ring of the ball bearing,reduce the fitting clearance be-tween the upper and lower covers of the bearing seat,thereby reducing the internal clamping effect of the ball bearing and improving the benefits of rolling friction reduction.

CamshaftBall bearingSplit bearing seatFriction reduction

王冠、李周裕、段超阳

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上汽集团创新研究开发总院,上海 201804

凸轮轴 球轴承 分体式轴承座 减摩

2024

内燃机与配件
石家庄金刚内燃机零部件集团有限公司

内燃机与配件

影响因子:0.095
ISSN:1674-957X
年,卷(期):2024.(1)
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