Acme screw thread is to ask for a key component in the movement precise movement, the main use of high-quality alloy steel processing trapezoidal screw type, heat treatment process to ensure its excellent mechanical properties, in the manufacturing process, separate coarse and fine process, effectively ensuring Parts of reasonable stress distribution, the key process in the heated workshop machining trapezoidal screw design, stable temperature, to ensure that all indicators meet the national standard high-precision screw JB / T 2886-1992 Machine acme screw, nut technical conditions relating to the acceptance criteria . Keystone Ball accuracy class and acceptance criteria: R logo screw, right-handed screw is generally not marked. 7 screw - for precise drive, precision screw machining lathe trapezoidal screw, Exon grinder, surface grinder feed exercise. In deciding on the use of the trapezoidal screw rolling, milling or grinding and other manufacturing processes, what factors should be considered? For trapezoidal screw, the rolling process than cutting (lathe milling) processes. Because the surface is more rugged rolling screw trapezoidal screw and a better surface finish, in addition, the rolling process can be used to deal with a long bar, which can then be cut to any length. Accuracy can be better than rolling screw 0.003 inches per foot. For greater accuracy, you should consider using grinding processes. Grinding screw can 0.0003 inches per foot or better accuracy. However, the cost of grinding process is much higher (10 times) trapezoidal screw factory | Korea Taiwan transmission machinery (certified) | GAOYAO provided trapezoidal screw drive from Dongguan Machinery Co., Korea and Taiwan. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) is an industry leader in Dongguan, Guangdong, machine tool accessories, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Korea and Taiwan transmission machinery leadership with the staff warmly welcome all inquiries negotiations, Korea and Taiwan to create a better future transmission machinery.