Research on the transmission error of swing-rod movable teeth transmission system

Abstract

Using the two-tooth difference swing-rod movable teeth transmission system satisfying the drive function of large optical instruments as the study object, the influence of each component error on system transmission error is analysed. Each component error is presented by the vector method, and then it is transformed into equivalent error in the direction of the meshing action line based on the equivalent meshing error principle. The instantaneous transmission ratio of the system is obtained by the instantaneous velocity center method, and the system transmission error model is established. Using numerical analysis, the influence of each component error on the system transmission error is obtained. The transmission error test platform is used to test and analyze the transmission error of the two-tooth difference swing-rod movable teeth transmission system. The research results show that the swing-rod length error and the wave generator eccentric error have a great influence on the transmission error of the system among the six types of error factors, so they should be strictly controlled during design, processing and assembly. This study provides a theoretical basis for the rational allocation of machining errors and assembling errors of the two-tooth difference swing-rod movable teeth transmission system.

In situ detection and mass spectrometry imaging of protein-related metabolites in Bombyx batryticatus before and after frying with wheat bran

“…We detected various types of beauvericin and its derivatives, such as beauvericin A, bassianolide and beauverolide A, which had pharmacological properties including antitumor ( Zhan et al., 2007 ; Jiang et al., 2014 ; Wu et al., 2017 ), antibacterial ( Kouri et al., 2005 ; Mei et al., 2009 ), antiviral, and anticonvulsant effects ( Jiang et al., 2023 ). Cyclodipeptide is formed by the internal cyclization of two amino acids, with 2,5-diketopiperazine or 2,5-dioxypiperazine as its parent nucleus ( Wei, 2020 ). There were several types of cyclic dipeptides identified by MALDI-MSI, such as cyclo(Tyr-Val) and cyclo(Ala-Pro), with the bioactivities of anti-tumor, neuroprotective, immune and metabolic regulatory, and anti-inflammatory effects ( Qiang and Mei, 2014 ).…”

Analysis of Load Inhomogeneity of Two-Tooth Difference Swing-Rod Movable Teeth Transmission System under External Excitation

“…At present, research papers on the swing-rod movable teeth transmission mainly focus on tooth shape analysis [4], tolerance design [5], dynamic characteristics [6][7][8], strain analysis [9], and so on. Most of the studies on load inhomogeneity of transmission system are about planetary gear transmission.…”