花键联接由内花键和外花键组成。内、外花键均为多齿零件，圣霖联接机采购，在内圆柱表面上的花键为内花键，圣霖联接机，在外圆柱表面上的花键为外花键。显然，花键联接是平键联接在数目上的发展。
The connection of the spline is made up of the inner and outer spline. The inner and outer spline are multi tooth parts，圣霖联接机价格， and the spline on the surface of the inner cylinder is the inner spline， and the spline on the outer cylindrical surface is the outer spline. It is that the spline connection is the development of the number of flat bond connecti.
螺旋副的间隙大，旋转时费力，使用中稳定性差。机用虎钳开合行程大，螺旋副的运行长度较长，圣霖联接机生产，为保证能够快速装夹，（金属加工真不错）机用虎钳螺旋副的螺距较大。较大的螺距意味着较大的螺旋升角，转动单圈进给量较大，使用时较费力；较大的螺距需要更大的配合间隙来确保螺旋副的正常使用。
The clearance of the helix pair is large， the rotation is hard and the stability of the use is poor. The machine has large opening and closing stroke， and the operation length of the screw pair is longer. In order to ensure quick clamping， metal machining is good. Larger pitch means larger spiral angle， larger single turn feed and more laborious use. Larger pitch needs more fit clearance to ensure the normal use of screw pair.
键是一种标准件，通常用于联接轴与轴上旋转零件与摆动零件，起周向固定零件的作用以传递旋转运动和扭矩，楔键还可以起单向轴向固定零件。而导键、滑键、花键还可用作轴上移动的导向装置。 根据键的结构形式，键联接可分为平键联接、半圆键联接、楔键联接和切向键联接等几类。
The key is a standard part， which is usually used to connect the rotating parts and swing parts of the shaft and the axle to move the fixed parts to tran**it rotary motion and torque， and the wedge key can also play a one-way axial fixation part. The guide， slippery key and the spline can also be used as a guiding device for moving on the axis. According to the structure of the key， key joins can be divided into a flat bond， a semicircle bond， a wedge bond and a tangent bond.
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