Accuracy analysis of herringbone gear transmission based on measured symmetry error

Purpose The symmetry error generated in the machining process of herringbone gears will destroy the stability of the transmission system. The purpose of this paper is to establish a symmetry error measurement model of herringbone gear based on spiral measurement method, and to evaluate the transmission accuracy of herringbone gear based on the measured symmetry error. Design/methodology/approach A symmetry error measurement model of herringbone gear based on spiral measurement method is proposed. The measurement method is verified by three coordinate measuring instrument. The transmission error analysis model of herringbone gear is established. The influence of speed and load on it is analyzed. Findings At the same speed, when the load increases from 100 N·m to 500 N·m, the transmission error increases and the transmission accuracy of the system decreases. Under the same load, the speed is increased from 100 rpm to 500 rpm, which has little effect on the transmission error. Originality/value The measurement method and analysis model used in this paper provide reference value and significance for the measurement and analysis of symmetry error. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-09-2024-0350/