Herringbone tooth inner gear ring machining method

Abstract

The invention discloses a floating-type combined herringbone tooth inner gear ring machining method. The method includes the following steps that internal teeth and external splines are machined at any circumferential position; the center phase difference of internal tooth grooves and external spline tooth grooves of any pair of adjacent internal teeth and external teeth is detected; the detectedinternal and external tooth grooves are used as a starting point, the phase difference detection result is used as an initial value, and the phase differences of the remaining internal tooth grooves and the adjacent external tooth grooves are calculated in sequence; the internal and external tooth grooves corresponding to the minimum value in the phase difference calculation result are marked as datum tooth grooves; and a mathematical model is established on the basis that the internal and external tooth phase difference detection result of the initial point is used as a constant, and the tooth number distance of the datum tooth grooves to be marked and starting point tooth grooves is used as a variable, and an iterative operation rule is further adopted for calculation. The herringbone tooth inner gear ring machining method has the beneficial effects that the machining route is short, the clamping number is small, detection workloads are also small, machining precision and efficiencyare high, the quality guarantee capability is also high, and manufacturing cost is low.

Description

technical field [0001] The invention relates to a processing method of a herringbone ring gear, in particular to a processing method of a floating combined type herringbone ring gear. Background technique [0002] In recent years, the high-speed and high-torque planetary transmission structure has been widely used in nuclear power and other fields. Considering the stability of transmission, processing feasibility and assembly requirements, the ring gear of this planetary transmission is usually designed as a floating combined structure, that is, The inner ring gear is composed of two single helical gears (one left-handed and one right-handed). In the face of increasing market demand and increasingly fierce market competition, manufacturing companies urgently need a more efficient and low-cost processing method. At present, the main process route of the floating combined herringbone tooth internal gear is: milling internal gear→rough grinding internal gear→marking (leading t...

AI Technical Summary

Problems solved by technology

The existing processing methods have the following technical difficulties and deficiencies: First, the error in finding the center line of the tooth groove by marking is very large, which can neither completely guarantee the centering nor cause the tooth surface to be unprocessed during gear grinding The second is that there is a certain distance between the internal teeth and the external splines. In addition, the internal teeth are helical teeth. It is easy to be skewed in the process of leading the centerline of the inner teeth to the external spline, and the error is difficult to control. There are accumulated errors in multiple clamping, tool setting, and inspection processes, which is not conducive to the control of machining accuracy; third, it is necessary to inspect multiple pairs of tooth grooves to find a pair of tooth grooves with the smallest phase difference, and the three-coordinate detection workload Large, and the detection process is sandwiched between the processing procedures, which increases the workload of transshipment; Fourth, the number of grinding gears is more, the operation process is complicated, the process is more, there are many uncontrollable links, and it is easy to make mistakes, resulting in high processing costs and long processing cycles

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