The basic design of the CNC carving and milling machine tool body structure

YF5214 CNC mold carving and milling machine is mainly composed of five major components: lathe bed, Y to the workbench, columns, beams and Z to the motorized spindle system. The design of the lathe bed must give full consideration to the selection, structure of the whole machine tools and performance after assembly, and other components. After hammering out between multiple solutions, decided the carving and milling machine adopts the following structure design: ( 1) CNC carving pause with double pillar gantry structure. Because of the gantry structure can enhance the rigidity and stability of the machine tool. Adopts double column symmetric structure, can make the smaller the influence of thermal deformation on spindle axis deflection, enhance the stability of beam stiffness. Bed body USES the high and low reinforced with mesh architecture, some a hex mesh connected directly with honeycomb structure, can not only ensure the rigidity of machine tool and reduce the weight. ( 2) Structure spindle design was established. Because CNC engraving and milling machine has the function of engraving and milling, and mainly on the top surface of workpiece processing, and considering the vertical compared with horizontal narrow area, so the spindle for vertical layout design. ( 3) Lathe bed adopt and sand mold casting, the blank material for high strength gray cast iron ( HT250) 。 The weak corrosion resistant material, the base for the production of stress larger parts. When choosing wall thickness, considering its casting is convenient and the tensile strength, the wall thickness as a 20 mm. The tensile strength of 240 mpa, can fully meet the design requirements. In actual production, because the lathe bed and into the hollow, the interaction of internal reinforcement plate structure is complicated, so is easy to molding foundry casting molding method. In order to improve the stiffness of machine tool, the pillar of the cross section shape selection & other; Work & throughout; Words just type. Because components under bending and torsion load, its deformation size depends on the cross section of bending and torsional moment of inertia. The bending and torsional moment of inertia of the stiffness is also high. And circular cross section of the torsional stiffness is bigger than square cross section, bending stiffness is smaller than square cross section; Enclosed section stiffness is better than not closed cross section stiffness of a lot. Engraving machine price information in yifan numerical control network.