Large CNC crankshaft grinder cut Battery powered bikes static and dynamic performance analysis measuring device

In the various components of the crankshaft grinding wheel frame , the measuring device is one of the important structural Three wheel bikes , the quality of its structural rigidity and dynamic performance of the merits of the crankshaft grinder precision machining very large impact . Therefore, in the design phase of the crankshaft grinder measuring devices need to be applied finite element analysis method for quantitative analysis of its stiffness and vibration characteristics, in order to understand the deformation measuring device at work , to understand their natural frequencies and mode shapes corresponding characteristics to identify their weaknesses . Here in Shanghai Machine Tool Works Co., Ltd. developed a large CNC crankshaft grinder cut Cargo bike tracking (hereinafter referred to as " crank grinder " ) measuring device for the study were analyzed . Establish a simplified geometric model wheel frame measuring device measuring device finite element model is composed of many parts assembled complex structures , mainly by the base of the stand , measuring head frame of the knife device , towline and installation of the measuring head and the knife holder composed of many components on the device , and there is no contact between the connecting multiple parts . If the model is simplified, will largely affect the calculation speed , and may even cause serious error calculation does not converge . Therefore, before meshing , the first of the CAD model to simplify the measuring device , such as the removal does not directly bear the force of the towline , the impact of small bolt holes and rounded and chamfered so the parts are ignored