Precision ball screw directly affect the positioning accuracy of CNC machine tools, precision ball screw parameters, which lead error effects on the positioning accuracy of the machine the most obvious. 1/3 ~ 1/2 General set screw in the preliminary design of any 300mm stroke volume variation should be less than the target set position V300p positioning accuracy values ??to determine the accuracy of checking in at the end. Lead screw selection is generally based on the design goals of the highest rapid traverse speed vmax, the maximum speed nmax and motor and screw drive servo motor than i to determine. Generally based on the design of the ball screw rated dynamic load to determine the dimensions of the ball screw. Dynamic load rating refers to a group of the same size ball screw after running a million times, the ball screw (threaded surface or ball) 90% of the non-axial load fatigue stripping injury (pitting) time. Minimum axial load to the rail under the table and workpiece friction effect, calculate the maximum axial load of the machine is the maximum load of ball screw driving force, it is cutting force in the axial direction of the force of the ball screw friction between the rail and the (in this case the common rail friction caused by the table, the workpiece, the total weight of the jig and the cutting force of the three components in the direction perpendicular to the rail. Select screw mounting screw support, including ways and wire special bearing selection bar, ball bearing different ways stiffness screw, rotary precision, critical speed has a great influence, generally based on the length of the screw, rotary precision, stiffness requirements and speed to select a different installation methods. detection means to enrich and strengthen our experimental study about to join the WTO, the late start of high-speed precision ball screws, face competition in the international market, the product to be innovative, to improve the level of technology, product quality but also to excellent ball screw manufacturing Enterprises should pay attention only to quickly change product output, output value, not pay attention to the performance of the experimental study of the situation of the new product. not only for high-speed ball screw positioning accuracy, noise, temperature, plus (minus) the speed, dynamic stiffness test study, more research should be conducted to test the reliability, which was the key to capture the market. ball screw function from the initial "quick energy-saving drive" to "precise positioning", from the "big lead high-speed drive" to "precision high-speed type", is a qualitative leap in product upgrades. linear servo speed driving field, when after cost performance, cutting time for a comprehensive analysis of the ratio of air travel time, the acceleration and deceleration of the frequency of appearance ball wire rod manufacturers, taking into account the energy saving and environmental protection, people pay more attention to the development of high-speed precision ball screw. automobile industry, the development of the aerospace industry for high-speed machining of light alloy and more attention, machining centers, industrial robots, CNC forging machinery , FMS, and all types of CNC machine tools and automated mechanical feed drive speed continues to increase. In the processing center, for example, the moving speed of the table in the 1980s only 15 ~ 20m / min, about 0.5g acceleration ball screw, 90s In early for 30 ~ 50m / min, approximately 1g acceleration ball screw suppliers, to the late 1990s, reached 60 to 80 min, the acceleration of 1.5g or more, and to promote a higher speed. As a servo feed drive system Important actuators - ball screw, with their fast and efficient, energy saving, zero backlash high stiffness drive, follow the sensitive, do not pollute the environment and strong adaptability to the surrounding environment and so the price of ball screw, linear motion applications always occupied the field most of the market. In order to meet the requirements of high-speed machining, to meet at the same time positioning accuracy, how to further improve the speed of the feed and processing (decrease) rate has become the focus of the current industry focus. Germany imported ball screw, ball screw rod, Korea and Taiwan transmission machinery provided by the Dongguan City, South Korea Taiwan Transmission Machinery Co., Dongguan City, South Korea Taiwan Transmission Machinery Co. (www.dghantai.com) strong, credible, in Dongguan, Guangdong and other machine tool accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Korea Taiwan transmission machinery and you hand into the brilliant, for a better future!