【作者】 张浩波；

【导师】 郭培全；

【作者基本信息】 济南大学 ， 机械工程（专业学位）， 2016， 硕士

【摘要】 镁合金因其拥有良好的力学性能且具备可降解的特性引起了众多学者的关注,医用镁合金替代原有不可降解金属材料应用于接骨板领域将有效解决病情痊愈后取出接骨板造成的二次伤害问题。本文以直型锁定加压接骨板加工技术为中心,对MgCa0.8材料的切削性能和接骨板的加工工艺进行了较为系统的研究。接骨板的临床应用对其表面质量有着严格的要求,为了获得较高的表面质量,本文进行了针对MgCa0.8材料立铣削加工参数对表面质量影响的研究。通过对比选用了当前针对镁合金切削常用的键槽铣刀,试验并确定了合理的铣削方式,设计了所用试件的形状和尺寸并使用单因素试验法获得了切削速度、进给量和切削深度参数的改变对工件表面粗糙度值影响的规律,确定了针对接骨板加工的最佳切削参数。本文进行了针对MgCa0.8合金立铣削切削参数对切削力影响的研究。试验过程中,设计了与Kistler9257B三向动态压电式测力仪搭配使用的切削试验用夹具,使用单因素试验法获得了切削速度、进给量和切削深度的改变对切削力的影响规律,并采用Third Wave AdvantEdge仿真软件进行了相同参数下的切削仿真验证并得到了一致的结果,为后期MgCa0.8材料的切削加工提供了理论依据。本文研究了直型锁定加压接骨板的加工工艺。研究中选取了各工序的加工用刀具,分析并确定了合理的夹持方案和工艺路线,设计制作了加工用夹具,利用数控加工中心并采用前期试验确定的切削参数进行了直型锁定加压接骨板各工序的加工,最后对接骨板进行了标准化检测并总结了加工过程中存在的问题和尚待改进之处。更多还原

【Abstract】 Magnesium alloy attracts the attention of scholars because of its good mechanical and biodegradable properties. Medical Magnesium alloy applied to the field of bone fracture plate which replaces the original non degradable metal materials will effectively avoid the secondary damage caused by removing the plate after recovery. This thesis made a scientific research on the cutting performance of Mg Ca0.8 material and the processing technology of bone fracture plate.Bone fracture plate used in the clinical application has strict requirements on the surface quality. In order to obtain high surface quality, a research has been done on the effect of milling parameters on the surface quality of Mg Ca0.8 material. By comparing, the keyway cutter that aiming at the cutting of Magnesium alloy has been chosen in this experiment. Meanwhile the reasonable milling method has been tested and determined. The shape and size of the specimen used in the experiment have been designed. Single factor test method has been used to obtain the cutting speed, feed rate and cutting depth parameter. After that, the optimal cutting parameters for plate processing have been determined.A research about the influence of Mg Ca0.8 vertical milling material parameters on cutting force has been done. During the test, Cutting test jig have been designed to match with Kistler9257 B dynamometer. Single-factor test has been used to obtain a rule of the influence on the change of the cutting speed, feed rate and cutting depth parameter. At the same time, simulation software(Third Wave Advant Edge) has been used to verify cutting simulation with the same parameters to provide a theoretical basis for the machining of late Mg Ca0.8 materials.In this paper, the processing technology of straight locking compression plate has been studied. The process of cutting tool has been selected, and the reasonable clamping scheme and technical route has been analyzed and determined. The processing fixture has been designed and produced. By using CNC machining centers and the preliminary experiments, the cutting parameters of the straight type locking compression plate of each working procedure and processing has been determined. Finally, after the standardized testing of the bone fracture plate, the monk problems and some points need to be improved existing in the process have been summarized.更多还原