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Precision machine tools and machine tool gear shaft connection mode:
Commonly used in flat key links have an interference fit or coupling gear coupling. Since the key is the standard, it can be selected according to the structural characteristics of the connection, requirements and working conditions. If strong enough, can be a double bond, a 180 ° arrangement, when the key strength check calculation according to 1.5.
Splined coupling usually this is not interference, so that part needs to be coupled axially fixed. Splined high carrying capacity, neutral good, but high production costs, required special tooling. According to their different spline tooth can be divided into rectangular spline, involute splines and serration three. Involute spline coupling radial force between the teeth can play a role in self-centering under load, so that each tooth force more evenly, which is substantially the same process with the gear, easy to obtain high accuracy and interchangeability , so in the wind turbine gearbox broader application.
 Interference fit coupling interference fit connection enables shafts and gears (or couplings) has the best neutral, especially in the often under impact load cases, this connection can be reliably work in the wind turbine gearbox the wide range of applications. The use of the coupling interference between parts with the formation, the mating surface is cylindrical or conical surface (taper advisable 1:30 to 1: 8). Conical surface interference fits are used for larger loads to be repeated assembly and disassembly of the occasion.
Swelling sets coupled by a shaft, the friction between the hole and the tapered resilient sleeve contact surface to deliver power generated is a keyless connection mode, set a good disposition, easy assembly and disassembly, high load capacity, can circumferentially and adjusting the relative axial position of the shaft and the hub, and has a security role.