What are the requirements for the drum profile when applying the drum tooth coupling?

The drum curve is mostly a circular arc, and these circles with three circular arcs are called drum circles. In the arc drum curve, the center of the drum circle is on the axis of the gear, and there is not on the axis; There are also non-coincidence of the drum circular center and the spherical center of the tooth surface, usually the design is based on experience, in general, the drum tooth coupling should meet the following requirements:



What are the requirements for the drum profile when applying the drum tooth coupling?


The edge contact does not occur when the Angle between axes is at its maximum. The smaller the concentrated load on the teeth, the better. The curvature of the tooth surface is proportional to the tympanity PI, so the radius of the tympanity circle needs to be as large as possible. Because the radius of curvature of the drum curve is proportional to the thinning of the inner tooth on one side, the requirement for the radius of the drum circle is as large as possible.
The drum tooth surface of the non-conjugate tooth surface is formed by the gradual displacement of different end sections and the dashed line formed by the displacement and axial coordinates is called the drum curve, which is related to the meshing clearance of the teeth. Insufficient thinning may cause interference. When the thinning amount is too large, the strength of the teeth will be weakened and the side backlash will be large.