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多油楔长瓦轴承包括长三瓦和长五瓦等自动调位轴承,通常用于磨床砂轮主轴等部位。工作时主要载荷由定位轴瓦来承受,轴承与轴颈间隙由径向移动的轴瓦来调整,轴瓦的长径比为2。我厂原来修刮轴瓦用的假轴轴颈,一般按主轴增大0.02～0.04毫米配制,这样修刮的轴瓦和主轴轴颈间隙,最小只能调整到0.025毫米左右,否则就要发热抱轴,且把轴瓦两侧面和轴颈接触的部位研坏(图1)。由于轴和轴瓦间隙不能调小,严重影响零件加工光洁度的提高。
Multi-wedge long-watt bearing, including long three watts and long five watts and other automatic adjustment of bearings, usually used for grinding wheel spindle and other parts. The main load at work is borne by the bearing bush, bearing and journal clearance by the radial movement of the bearing to adjust the bearing, the aspect ratio of 2. I plant the original repair scraping bush with a false shaft journal, the general increase according to the spindle 0.02 to 0.04 mm preparation, so repair scraping the bearing bush and spindle shaft clearance, the smallest can only be adjusted to 0.025 mm or so will be heating axis , And the bearing bush on both sides of the contact area with the bad (Figure 1). As the shaft and bearing clearance can not be adjusted small, seriously affecting the improvement of parts finish.