Processing method of heavy-duty herringbone gear and its calibration tooling

Abstract

The invention discloses a processing method of a heavy-duty herringbone ring gear processed by splitting and splicing and a correction tool thereof. The inner helical teeth of the two ring gears are separately processed first, and the dimensional accuracy of the inner teeth is improved through fine grinding. , so as to ensure the high-precision symmetry of the internal teeth of the left-handed ring gear and the right-handed ring gear, and the center plane is centered, and then the left-handed ring gear and the right-handed ring gear are calibrated on the calibration tool, by putting the two ring gears on the same calibration To ensure that the two ring gears are coaxial, by screwing in two calibration probes, the two top balls are respectively offset against the two side walls of the inner teeth of the two ring gears to ensure that the phase angles of the two ring gears are consistent. The two pressing parts respectively clamp and fix the two ring gears on the correction part, so as to ensure that the two ring gears are completely attached to the two ends of the positioning part. In this way, tooling is used to assist in the process of fitting to improve the control accuracy of the center plane of the inner and outer teeth, which facilitates alignment and alignment, improves efficiency, reduces error accumulation, and improves machining accuracy.

Description

technical field [0001] The invention relates to the field of gear processing, in particular to a processing method of a heavy-duty herringbone ring gear processed in separate parts, and a calibration tool used in the processing method. Background technique [0002] The herringbone tooth is a kind of cylindrical gear. The herringbone tooth is composed of two sets of helical teeth with different rotation directions on the left and right. Gear meshing transmission, high bearing capacity, stable transmission, especially suitable for applications in heavy machinery, such as ships and other high-power transmission occasions. [0003] The plane where the left and right tooth extension lines of the herringbone teeth intersect is the center plane of the herringbone tooth. When there is a phase difference or a coaxiality error between the two sets of helical teeth of the herringbone tooth, the center plane will be different from the theoretically designed center plane. Displacement a...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the accumulative error in the machining process of a large heavy-duty ring gear with internal and external herringbone teeth leads to the instability of the final control deviation between the center plane of the inner tooth and the center plane of the outer tooth, the purpose of the present invention is to provide a split The processing method of the combined heavy-duty herringbone gear and its calibration tooling adopts the method of splitting the inner gear first, and then combining the outer gear. During the combining process, the tooling is used to assist in improving the center plane alignment control accuracy of the inner and outer gears. Facilitate alignment and alignment, improve efficiency, reduce error accumulation, and improve machining accuracy

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