Accuracy refers to the movement of the drive transmission chain between the machine each end piece coordination and uniformity. Machine tool stiffness refers to the ability to resist deformation under external force, the greater the machine rigidity, higher dynamic accuracy. The stiffness of the machine tool comprises a contact member itself stiffness and rigidity member. Machine element itself depends on the stiffness of the material properties of the member itself, cross-sectional shape and size. Contact stiffness between the members not only contact materials, geometry and hardness of the contact surface of the multi-axis drilling equipment, but also the surface roughness of the contact surface, geometric accuracy, processing methods, media contact surface, the pre-pressure and other factors. Vibrations appear on the machine, forced vibration and self-excited vibrations can be classified. Self-excited vibrations are not subject to any external force in the exciting force interference, continuous vibration generated by cutting internal processes. In the continuing role of the exciting force caused by forced vibration system for forced vibration. Stiffness and damping characteristics of the shock resistance and machine tools, and quality related. Because of the various components of the different thermal expansion coefficients of the machine, resulting in various parts of the machine different deformation and relative displacement drilling equipment, a phenomenon called thermal deformation of the machine. Errors due to thermal deformation generated maximum of 70% of all errors. For dynamic precision CNC drilling machine equipment, there is no uniform standard, mainly indirect dynamic accuracy of the machine to make a comprehensive evaluation of typical parts by cutting accuracy achieved. According to the machine movement in the cutting process to distinguish between the role of drilling equipment, cutting movement divided into the main movement and feed movement. Main sport: sport is working to form a cutting tool or the main power consumption. Feed motion: the workpiece is excess material is removed continuously working movement. Cutting process is only one main movement, the feed movement may be more than one. Main movement and feed movement were completed by the tool or workpiece, the tool can also be done individually. In addition to cutting machine motion movement, and some auxiliary work to achieve the cutting process and the machine must be assisted movement. Qingdao Drilling Equipment | Drilling Equipment | Chen Hua Chen machinery provided by the China Machinery Equipment Co., Ltd. Qingdao. Qingdao Hua Chen Machinery Co., Ltd. (www.qdchenhua.com) strong, credible, in Qingdao, Shandong CNC machine tool industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chen Hua machinery and you hand into the brilliant, for a better future!