In 1765, Switzerland L. Euler proposed mathematical basis involute analytical studies to clarify a pair of meshing gears, the relationship between the radius of curvature of the curve and its center of curvature of the tooth position. Later, Savary further complete this method, into the present Eu-let-Savary equation. Application of involute contribute is Roteft WUlls, when he proposed center distance changes, involute gear ratio has the advantage of a constant angle. 1873 Non-standard shaft parts technology, German engineer Hoppe proposed non-standard shaft parts for different number of teeth involute gear change in pressure angle, and thus laid the ideological foundation of modern displacement gear. First, the classification shaft parts, technical requirements axis is one of the typical machining parts in common. It is mainly used to support the mechanical gears, pulleys, cams and connecting rods and other non-standard transmission parts shaft parts prices to transmit torque. According to the structure in different forms, can be divided into a stepped shaft axis, taper spindle axis, hollow shafts, crankshafts, camshafts, eccentric shaft, the shaft of various screw and other applications where a wide staircase, the process can be more fully and common law to reflect the processing of shaft parts. Non-standard shaft parts wholesale | ZUNHUA non-standard shaft parts | Fuyuan gear quality assurance provided by the Luoyang Fuyuan Gear Machinery Limited. Luoyang Fuyuan Gear Machinery Co., Ltd. (www.lyfycl.com) strong, credible, in Luoyang gear industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Fuyuan gear and you hand into the brilliant, for a better future!