我们聊聊在机械设计中，我们必须掌握的有关轴毂联接的知识！轴毂联接是轴毂与轴相连接的轴上零件，常见齿轮、带轮等。联接使回转零件在轴上***和固定，以便传递运动和动力。
We talk about the mechanical design, we must master the knowledge about the shaft hub connection. Shaft hub connection is the axle hub and shaft connected to the shaft parts, common gear, belt wheel, and so on. The connection enables the rotating parts to be and fixed on the axis to tran***it motion and power.
与平键联接比较，花键联接在强度、工艺和使用方面有下列特点：在轴上与毂孔上直接而均匀地制出较多的齿与槽，故联接受力较为均匀；因槽较浅，齿根处应力集中较小，轴与毂的强度削弱较少。
Compared with the flat bond connection, the spline connection has the following characteristics in strength, process and use.More teeth and grooves are made directly and evenly on the shaft and hub hole, so the joint force is more uniform.
Because of the shallow groove, the stress at the root of the tooth is ***all, and the strength of the shaft and hub is weakened less.
矩形花键联接是应用***为广泛的花键联接。 应用广泛。如航空发动机、汽车、燃气轮机、机床、工程机械、拖拉机、农业机械及一般机械传动装置等等。渐开线花键的齿廓为渐开线，分度圆压力角α有30°及45°两种。齿顶高分别为0.5m和0.4m(m为模数)。
The rectangular spline connection is the most widely used spline connection. It is widely used. Such as aero engine, automobile, gas turbine, machine tool, engineering machinery, tractor, agricultural machinery and general mechanical tran***ission equipment and so on. The tooth profile of the involute spline is involute, and the pressure angle of the dividing circle is 30 and 45 degrees. The top of the tooth is 0.5m and 0.4m respectively (M is the modulus).