Machining method of internal herringbone gear

Abstract

The invention relates to a machining method of an internal herringbone gear. The machining method is characterized in that a centering clamp is machined according to the size of the internal herringbone gear, a gear blank is machined, internal oblique teeth are inserted, machined gear rings are assembled into the internal herringbone gear through the centering clamp, and the internal herringbone gear is placed on a three-coordinate detector so that the centering degree can be metered; and external teeth are rolled and milled at the same time under the combination state, and a mark is made to serve as a mark for assembling. By means of the machining method, the internal teeth are inserted firstly, a sleeve and pressing plate combined tool is adopted to clamp the two gear rings opened oppositely to a sleeve, centering accuracy and precision are high, the working procedures of rolling and milling the external teeth are completed at a time, machining efficiency is improved and labor intensity is relieved. The clamp is simple in structure, easy to manufacture and convenient to assemble and disassemble. The machined internal herringbone gear is high in precision, stable in quality and good in uniformity, the centering degree after the internal herringbone gear is assembled is increased and operation reliability and stability of the herringbone gear in a transmission system are improved.

Description

technical field [0001] The invention relates to a processing method, in particular to a processing method of an inner herringbone gear. Background technique [0002] The herringbone gear is a cylindrical gear, that is, right-handed teeth on a certain part of the tooth width on the cylindrical surface, and left-handed teeth on the other part of the tooth width. The herringbone gear has the advantages of high load capacity, stable transmission and small axial load, and is widely used in the transmission system of heavy machinery. For the outer herringbone gear, the two sides are manufactured separately and then combined together, or the two sides are made into one body, and an empty sipe is designed between the effective teeth on both sides. This is the conventional processing method for the outer herringbone gear. [0003] For the inner herringbone gear, it is usually designed and processed in separate parts, and then combined when used. First process one ring gear to the f...

AI Technical Summary

Problems solved by technology

The disadvantage of this processing method is: processing the tooth portion by scribing will cause a large angular error; the second is: the common normal dimensions of the outer teeth of the two ring gears are different, and the tooth error is also different. During assembly, the external teeth of the two ring gears mesh with the internal teeth of the same part, which affects the meshing of the external teeth and causes an increase in the centering error of the internal teeth, which affects product quality and equipment operation stability and reliability

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