Drum gear coupling

  Good lubrication of the drum gear is a necessary guarantee for the safe and reliable operation of the drum gear coupling, and it also reduces wear.Under the conditions of sufficient tooth root bending strength and tooth surface contact strength, the tooth width should be determined with a larger degree of overlap, and the tooth width should not be blindly increased to avoid unnecessary increase in the structural size.The general tooth width factor is 8-14.The minimum tooth width should be determined by the allowable root stress, and the width required for the displacement of the force point along the tooth width caused by the inclination between the shafts should also be considered.

   High-speed drum gear couplings are usually lubricated with lubricating oil. The tooth surface requires continuous lubrication. The lubricating oil should be drained smoothly, otherwise the temperature of the tooth surface will rise and accumulate moisture and dirt. The lubricating oil needs to be filtered by a high-precision oil filter , The filtration degree is less than 10 microns, some important high-speed drum gear couplings can also adopt the structure of oil collecting groove hole, that is, the oil collecting groove is machined in the shaft hole of the external gear, and the oil collecting groove is drilled at the bottom of the tooth groove of the external gear The communicating oil holes use the centrifugal force generated by the high-speed operation of the drum gear coupling to spray oil into the meshing part of the inner and outer gears to make them fully lubricated.

   An important way to increase the service life of drum gear couplings.The tooth width coefficient affects the tooth root bending strength and tooth surface contact strength of the tooth. The larger the tooth width coefficient, the greater the strength of these two items. The tooth width coefficient affects the coincidence degree. When the tooth width coefficient is less than a certain value, its value The increase of φ has a greater impact on the increase of the coincidence degree, and when the value is greater than this certain value, the increase of the device value has a smaller impact on the increase of the coincidence degree. For the drum-shaped gear coupling with the arc drum curve, the tooth width is still Determine the parameters of the bulge circle radius and backlash. The larger the tooth width, the larger the bulge circle radius and the larger the backlash required. Therefore, the following two requirements are required: Drum-shaped gears for drum-shaped gear couplings The surface improves the contact conditions of the inner and outer teeth, avoids the disadvantages of the edge extrusion and stress concentration of the straight tooth under the condition of angular displacement, and at the same time improves the friction and wear of the tooth surface, reduces the noise, and the maintenance cycle is long .The tooth end of the outer gear sleeve is in the shape of a horn, which makes the assembly and disassembly of the inner and outer teeth very convenient.