An outer gear of a planetary reduction gear having cycloid tooth type and the manufacturing thereof

摘要

The present invention relates to a gear reducer has a cycloidal tooth profile of the external tooth, and more particularly of the external tooth gear jidoe teeth are made of a wave form of the curve, and the front part located at the distal end to protrude been values, and pubic bone part having a groove, is composed of a contact portion formed between the inclined front part and the pubis value, which corresponds to the outer surface of the front part and the contact value The polishing process is made by grinding tools, pubic portion does not touch on the inner tooth pin is engaged in the process of being undercut groove treated as part consisting of, ; The invention of the cycloid (cycloid) planetary gear reducer Since cry gear teeth are separated by a non-abrasive portion is formed by an undercut groove machined parts are made grinding and polishing process is not performed by grinding tools, and improve the productivity of the process and simplify the production process and excellent processability , in particular, prevents the external tooth gear and the internal gear of which the value Habsi efficiency by load and friction loss of a portion meshing with the lowering and at the same time, making the teeth to ensure that the cutting part is formed by the undercut during processing without processing a portion above planetary workability due to having a cycloid gear tooth to facilitate the cry of the gear reducer and on the processing methods.