Processing method of herringbone gear for heavy machinery

Abstract

The invention discloses a processing method of a herringbone gear for heavy machinery. The processing method comprises the steps of (1) marking a gear blank; (2) clamping, installing and calibrating the position of a disc milling cutter; (3) performing coarse hobbing by utilizing the disc milling cutter; (4) installing and calibrating the gear blank and a hob; (5) performing finish machining on the gear blank by utilizing the hob; and (6) inspecting after the herringbone gear is formed. According to the processing method of the herringbone gear for heavy machinery, the machining precision andefficiency of the herringbone gear for heavy machinery are greatly increased, and the working area of the integrated forming tooth surface reaches 90% and meets the specification that the contact tooth length is greater than 60% at the initial stage of open gear transmission in the national standard; additionally, the tooth surface finish reaches Ra3.2; and the design size in the design of gear shafts, gears, box bodies and the like in the field of speed reducers and the like can be reduced by adopting the processing method in the condition that the same working bearing performance of the gearis guaranteed, so that raw materials are saved by at least 8% to 10%.

Description

technical field [0001] The invention relates to the technical field of processing herringbone gears for heavy machinery, in particular to a processing method for herringbone gears for heavy machinery. Background technique [0002] Herringbone gears for heavy machinery have the advantages of strong bearing capacity, stable transmission, self-centering, and small axial loads, and are widely used in the transmission system of heavy machinery; The upper part of the gear is right-handed, and the other part is left-handed; the herringbone gear needs to be processed separately on both sides of the gear end face. [0003] In the prior art, there are two ways to process herringbone teeth: one is single-index milling with a milling cutter; the other is hobbing with a hob; but there are certain size requirements for empty sipes; according to conventional Technology and experience, if a single-index milling cutter is used to process helical teeth, the smoothness and pitch tolerance can...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are two ways to process herringbone teeth: one is single-index milling with a milling cutter; the other is hobbing with a hob; but there are certain size requirements for empty sipes; according to conventional Technology and experience, if a single-index milling cutter is used to process helical teeth, the smoothness and pitch tolerance cannot be guaranteed, and at least ten milling cutters need to be customized. Abrasiveness; if the hob is used for machining, there is a requirement for the width of the empty groove; currently, in the process of processing herringbone gears, the hob is generally used, and the half of the gear part is processed first, and when the center of the hob is completely processed out of the gear part , at least need to cross the end face of the gear part by about 10mm, which will cause damage to the other half of the gear part which is smaller than the national standard empty sipe. If the size of the empty sipe is increased, the bearing capacity of the herringbone gear will inevitably be reduced; the inventor Based on the defects of the existing processing technology of herringbone gears, a processing method of herringbone gears for heavy machinery has been developed, which can well solve the problems existing in the prior art