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In recent years, the main direction of automotive gear manufacturing from commercial vehicle gear to passenger vehicle gear, automotive gear manufacturing process is also by the traditional: hobbing (or gear shaper) + shaving, and more and more use: hobbing (or gear shaper) + grinding (or strong gear honing), automotive gear manufacturing accuracy improved 1-2 levels. This is the result of fierce competition in the automotive market, but also a reflection of continuous progress in manufacturing technology. In recent years, the rise of hybrid vehicles and electric vehicles has also prompted the manufacturing accuracy of automotive gears to improve, so the manufacturing process for mass production of automotive gears should also be consistent with it. The composition structure of the automobile gear generally has the gear tooth, the tooth groove, the end face, the normal surface, the top of the tooth circle, the root circle, the base circle and the indexing circle.
