How to choose high-strength polyurethane elastomer material for plum coupling processing

How to choose high-strength polyurethane elastomer material for plum coupling processing? The plum blossom coupling is composed of two half couplings with the same shape of the claws and elastic elements. The plum blossom elastic element is inserted between the claws of the two couplings to realize the connection of the two couplings. The plum blossom coupling has simple structure, small radial dimension, light weight and small moment of inertia, suitable for medium and high speed conditions. Axial, radial and angular correction ability is great. The high-strength polyurethane elastic element is wear-resistant and oil-resistant, has a large load capacity and a long life. The plum blossom coupling works stably and has good vibration damping, buffering and electrical insulation properties.

The elastic body of the plum blossom coupling is difficult to stretch under pressure. Generally, the life of the elastic body is 10 years. The elastic body has the function of buffering and damping. Therefore, it is often used in the case of strong vibration. The performance limit temperature of the elastic body determines the plum blossom. The operating temperature of the coupling is generally -35 degrees. There are two main types of coupling. One is the traditional straight claw type, and the other is a curved (inward) claw type zero-backlash coupling. The traditional straight claw plum coupling is not suitable for high-precision servo drive applications.

How to choose high-strength polyurethane elastomer material for plum coupling processing?

The plum blossom coupling is based on the evolution of the straight claw type. Its design is suitable for the application of the servo system. It is often used for the connection of servo motors, stepping motors, and ball screws. The curved surface is to reduce the deformation of the spacer of the elastic plum, and the centripetal force during high-speed operation limits its influence. The zero-clearance claw coupling is composed of two metal sleeves (usually made of aluminum alloy or stainless steel) and a plum blossom elastic gasket. The elastic spacer of the plum blossom has multiple wing branches. Like a slider coupling, the elastic spacer of the plum blossom is aligned with the sleeves on both sides through extrusion to ensure zero clearance performance.

Plum blossom elastomer has low hardness. Plum blossom elastomer is polyurethane elastomer. The plum blossom coupling uses ordinary castings. However, due to the high density of the casting during casting, the machining torque is not good and the coupling is broken. The plum blossom elastic body is subjected to external force during operation, and the elastic element is bent, twisted, elliptical, and other abnormal changes. When the parts of the plum coupling are overheated or squeezed during operation, the mechanical properties of the surface layer will change, which can cause damage.

Choose appropriate plum elastic spacer material in actual use. There are two main types of plum coupling. One is a traditional straight claw type, and the other is a curved (concave) claw type zero-backlash coupling. The traditional straight jaw type plum coupling is not suitable for high-precision servo drive applications. The zero-backlash claw type plum coupling is evolved on the basis of the straight claw type. Its design is suitable for the application of the servo system and is often used for the connection of servo motors, stepping motors, and ball screws. The curved surface is to reduce the deformation of the spacer of the elastic plum and limit the influence of centripetal force during high-speed operation.

How to choose high-strength polyurethane elastomer material for plum coupling processing?

The zero-clearance claw coupling is composed of two metal collars and a plum blossom elastic spacer. The elastic spacer of the plum blossom has multiple wing branches. Like a slider coupling, the elastic spacer of the plum blossom is aligned with the sleeves on both sides through extrusion to ensure zero clearance performance. Different from the slider coupling, the plum blossom coupling is transmitted by extrusion, and the slider coupling is transmitted by shearing force. When using a zero-clearance claw coupling, the user should be careful not to exceed the fault tolerance of the elastic element. Otherwise, the elastic spacer of the plum blossom will be squeezed and deformed, lose its elasticity, and have no preload.

The plum blossom coupling has simple structure, does not require lubrication, is convenient for maintenance, easy for inspection, maintenance-free, and can run continuously for a long time. High-strength polyurethane elastic elements are wear-resistant and oil-resistant, have large carrying capacity, long service life, and are safe and reliable. The work is stable and reliable, with good vibration damping, buffering and electrical insulation properties. It has large axial, radial and angular compensation capabilities. The structure is simple, the radial size is small, the weight is light, and the moment of inertia is small. It is suitable for medium and high speed occasions. Plum blossom elastic spacer material is a major advantage of the coupling. Some automation equipment companies can provide plum blossom spacers of various elastic materials with different hardness and temperature resistance.