In 1674, the Danish astronomer Romer proposed for the first time the use of an epicycloid tooth profile curve to obtain a smooth running spline shaft. Spline shafts can play an important role and performance in a certain industry. They are produced and processed in accordance with principles and working procedures to ensure that they can play an important role in production.
During the industrial revolution of the 18th century, spline shaft technology was developed at a high speed, and a great deal of research was conducted on spline shafts. In 1733 the French mathematician Cami published the basic law of tooth profile meshing; in 1765 the Swiss mathematician Euler proposed the use of an involute tooth profile curve.
The gear hobbing machine and gear shaping machine that appeared in the 19th century solved the problem of mass production of high-precision gears. In 1900, Ford Motor Co., Ltd. installed differential gears for gear hobbing machines to produce helical gears on gear hobbing machines. From then on, gear hobbing gears became popular. The developed gears accounted for overwhelming advantages, and involute gears became the most widely used gears. .
In 1899, Lache was the first to implement a gear change program. The shifting gear not only avoids undercutting of the teeth, but also makes it possible to match the center distance and increase the bearing capacity of the splined shaft.
In 1923, the United States Wild Haber was the first to propose gears with circular arc profile. In 1955, Sunovykov conducted in-depth research on circular arc gears, and circular gear gears were used in production. This kind of gear has high carrying capacity and efficiency, but it is not as easy to manufacture as involute gear, and it needs to be further improved.
