1、 1 毕毕 业业 设设 计（论计（论 文）说文）说 明明 书书 题 目 典型零件（LWJ-20/7 固定式空 压机曲轴）的工艺及工装设计 学 生 系 别 机电工程系 专 业 班 级 学 号 指 导 教 师 摘 要 I 摘摘 要要 曲轴是空压机最重要的机件之一。它的使用寿命决定着空压机的使用寿命。在工作 时曲轴承受着很大的扭转力矩和大小及方向都在不断变化的弯曲力，有时还承受着扭转 振动。整个空压机的可靠性，在很大程度上取决与曲轴的强度。曲轴和轴颈在很高的比 压下高速运动，并且由于载荷的冲击性，使轴颈与轴承之间不易建立稳定的油膜，易引 起轴颈和轴承的强烈磨损，严重的情况下甚至引起轴承的烧损，严重影
2、响空压机的使用 寿命和工作可靠性。在制造时应使轴颈具有足够的耐磨性，并且应达到曲轴各部分的尺 寸、形状和位置精度以及表面粗糙度的要求。 关键词关键词:曲轴,使用寿命,扭转振动,比压 Abstract II Abstract Crankshaft air compressor is the most important one of the innards. It determines the life of the compressor life. Crankshaft at work under enormous torque and reverse the size and directi
3、on are constantly changing bending, sometimes subject to torsional vibration. The reliability of the entire air compressor, to a large extent, depend and crank the intensity. Journal of the crankshaft and high pressure over the high-speed movement, and because of the impact load, Bearing Journal and
4、 so difficult to estab -lish stability between the film, it can lead to the journal and bearing wear strong, seve -re cases could even lead to the burning of bearings, compressor serious impact on the service life and reliability. In the Journal so that manufacturers should have sufficie -nt wear resistance, and should reach all parts of the crankshaft size, The shape and location accuracy and surface roughness requirements. Keywords:
