联接飞轮工艺设计与数控加工1.doc

摘 要 本课题完成联接飞轮的工艺设计与数控加工。汽油机联接飞轮的主要功能是将汽油机做功行程的部分能量储存起来以克服其他的行程助力，使曲柄均匀稳定旋转。汽油机可以说的各动力机械的心脏，其质量的好坏、运行状态直接影响整个机械系统的性能，而联接飞轮作为汽油机中质量最大的运动部件其动平衡的精度对汽油机性能起着关键作用，因此，要使汽油机运行在平稳的状态下，就要尽可能提高联接飞轮的动平衡精度。而提高精度就要对联接飞轮进行技术分析及研究。 本次设计主要完成以下设计内容：联接飞轮的零件图纸与技术要求分析、零件二维图绘制及三维建模；制定机械加工工艺卡片文件；零件的夹具设计并进行夹具图二维图绘制及三维建模装配图；对工件的检验。根据铸件的形状特点、零件尺寸及精度，选定合适的机床设备以及夹具设计，通过准确的计算并查阅设计手册，确定了联接飞轮的尺寸及精度，在材料的选取及动平衡要求上也作出了详细说明，并在结合理论知识的基础上，借助于计算机辅助软件绘制了各部分零件及装配体的立体图和工程图,以保障联接飞轮的加工制造。 在夹具的设计过程中，主要以圆柱销和支承钉来定位，靠U形压板来夹紧。首先在数控车床上以左端外圆定位先加工Φ162孔及右端外圆,采用专用夹具以Φ162孔定位再加工3-Φ40通孔其中一孔，之后再以已加工Φ40通孔定位再进行其他Φ40孔及4-M10×1和8-M10螺纹的加工。 关键字：联接飞轮，动平衡测试，工艺设计，数控加工，夹具设计 The flywheel connection technology design and NC machining ABSTRACT This topic to complete the connection technology design and numerical control processing. Gasoline engine flywheel connection main function is to gasoline engine power stroke part of stored energy to overcome other trip helps make the crank homogeneous steady rotation. The gasoline engine can say the power machinery heart, its quality is good or bad, running status directly influence the mechanical system performance, and connection as gasoline engine flywheel in the largest sports parts quality the dynamic balance on the engine performance precision plays a key role, therefore, to make gasoline engine run in the state of smooth, be about to raise as much as possible the connection of dynamic balance accuracy. And to improve the accuracy of connection technology research and analysis of the flywheel. This design main to complete the following design content: the connection of the flywheel drawings and technical requirements analysis, part 2 d figure drawing and 3 d modeling; Make the machining process card file; Parts of fixture design and fixture graph 2 d figure drawing and 3 d modeling assembly drawing; The workpiece inspection. According to the shape of the casting parts size and characteristics, precision, and selected the right machine tool equipment and fixture design, through the accu