The design of the flexible coupling can be considered from the following aspects to ensure that it has high angular compensation capability and compact structure:
Material selection:Select materials with good flexibility and elasticity, such as metal springs, rubber, etc. These materials can deform and restore their shapes within a certain range, thereby providing greater angular compensation capability.Structural design:The design adopts structures such as a cross shaft, two universal joint forks, and four needle bearings. The rotation centers (axes) of all rotating pairs intersect at one point O, and the angle between the two axes is α. This structure enables the coupling to maintain a high angular compensation capability when transmitting the motion between the intersecting axes with variable angles.Control the angle α between the two axes to be between 35° and 45° to ensure that the speed fluctuation of the driven shaft is within an acceptable range, while achieving high angular compensation.By optimizing the structural design of the outer sleeve and the inner liner, the coupling can achieve a compact structure while maintaining high angular compensation capability.Application of elastic elements:Install elastic elements such as metal springs or rubber elements in the coupling, and use the deformation or clearance of these elements to make the two halves of the coupling at the master and slave ends move relative to each other to achieve local compensation.
The damping effect of the elastic element can also play a buffering and vibration reduction role, further improving the performance of the coupling.Consideration of allowable compensation:During design, it is necessary to consider the allowable compensation of the coupling, that is, the compensation capacity of the relative offset of the two shaft systems formed by various factors such as manufacturing error, installation error, load change during operation, impact, vibration, base sinking, temperature change and bearing wear.Ensure that the allowable compensation is large enough to meet the angular compensation requirements in practical applications.Lubrication and maintenance:Design a reasonable lubrication system, such as using grease such as No. 2 industrial lithium-based grease, and regularly lubricate the spline pair and bearings to reduce friction and wear and maintain the good performance of the coupling.Consider the convenience of maintenance and replacement, such as using sealing methods such as double-sided skeleton seals to ensure that external water and dust are not easy to enter the rolling bearing shell, and the grease in the rolling bearing shell is not easy to overflow.Assembly and testing:During the assembly process, ensure that all parts are clean, the spline parts slide freely, and the joints rotate flexibly.Strict quality inspection is carried out on the assembled coupling, including size, appearance, performance, etc., to ensure that the products shipped meet the design requirements.
Through the above design considerations, it can be ensured that the flexible coupling has a high angular compensation capability and a compact structure to meet the needs of various transmission systems.
