Abstract: This paper delves into the meshing characteristics of spiral bevel gear pairs with various crack types under heavy and alternating loads. Utilizing finite element analysis and loaded tooth contact analysis (LTCA), the study aims to elucidate the impact of cracks on the meshing properties, providing a theoretical basis for fault diagnosis. 1. Introduction Spiral… Read more: Meshing Characteristics Analysis of Spiral Bevel Gear Pairs with Different Crack Types

Abstract: This article focuses on the research of high-modification cylindrical spur gears. It elaborates on the gear transmission calculation, three-dimensional modeling using UG (CAD), theoretical stress calculation based on Hertz theory, and finite element analysis with Ansys Workbench. The results show that the theoretical and simulation stress values are close, validating the effectiveness of the… Read more: Three-Dimensional Modeling and Transient Finite Element Analysis of High-Modification Cylindrical Spur Gear

Abstract To investigate the bifurcation dynamics characteristics of star herringbone gear transmission systems, the research team established a pure torsional nonlinear dynamic model for the system using the lumped mass method. The nonlinear vibration differential equations of the system were solved using the Runge-Kutta method. Analysis techniques such as phase diagrams, Poincaré cross-sections, and bifurcation… Read more: Non-Linear Bifurcation Characteristics of Star Herringbone Gear Transmission System

1. Introduction 2. Parametric Modeling of Spiral Bevel Gear Project Name Driving Wheel Driven Wheel Number of Teeth 8 37 Tooth Width (mm) 70 70 Module (mm) 8.98 8.98 Pressure Angle () 20 20 Helix Angle () 30 30 Axis Angle () 90 90 Pitch Cone Angle () 12.20 77.80 Pitch Diameter (mm) 71.87 332.39… Read more: Spiral Bevel Gear: Parametric Modeling and Optimization

1. Hypoid Gear Finite Element Modeling 1.1 Mesh Division Software Unit Jacobian Coefficient HyperMesh – >0.7 1.2 Material Property Definition Software Analysis Step ABAQUS Dynamic, Implicit 1.3 Tooth Surface Contact Settings Contact Pair Discrete Method Tangential Behavior Normal Behavior Small gear concave surface – Large gear convex surface surface to surface – – 2. Tooth… Read more: Analysis of Meshing Characteristics of Hypoid Gears with Extended Epicycloid

Abstract In the pursuit of reducing the forming load and enhancing the precision of spur gear manufacturing, this study proposes a novel two-step cold forging process that integrates inward flow and mandrel exchange techniques. Traditional closed-die precision forging often encounters challenges such as sharp increases in forming load, uneven metal flow, and stress concentration, leading… Read more: Spur Gear Based on Coupled Inward Flow and Mandrel Exchange Method

Abstract This paper proposes an intelligent fault diagnosis method for spiral bevel gearboxes based on Gramian Angular Difference Field (GADF) and Hybrid Whale-Particle Swarm Optimization Algorithm (HWP) with Convolutional Block Attention Module-ResNet (CBAM-ResNet). The method addresses the low accuracy of ResNet in complex noise and the limitations of traditional optimization algorithms. It involves overlapping sampling,… Read more: Fault Diagnosis for Spiral Bevel Gearboxes Based on GADF and HWP-CBAM-ResNet

Abstract The space surface of high reduction hypoid gear (HRH) is complex, making it difficult to control the meshing quality through conventional machining calculation methods. This paper establishes a coordinate system for space gear meshing transmission and presents the general form of the space meshing equation. The surface equation of the trimming cutter head is… Read more: Calculation of Machining Parameters and Contact Simulation of High Reduction Hypoid Gear

Abstract In helicopter transmission systems, high contact ratio (HCR) spur gear is commonly lubricated and cooled via oil injection. Their thermal characteristics critically influence operational lifespan. This study establishes a numerical model for analyzing the temperature field of HCR spur gear under oil-jet lubrication using computational fluid dynamics (CFD). The Volume of Fluid (VOF) method… Read more: High Contact Ratio Spur Gear under Oil-Jet Lubrication

1. Introduction Spur gear play a crucial role in mechanical transmission systems due to their simplicity and high efficiency. However, in certain applications, the standard spur gear design may not meet the requirements for performance and durability. Tooth profile modification, which involves altering the shape of the gear teeth, has emerged as a promising solution… Read more: Meshing Dynamic Characteristics of Cylindrical Spur Gear Facing Tooth Profile Modification

Abstract This study focuses on enhancing the operational precision of worm gear-driven precision turntables through multi-body system dynamics. A mathematical model for error transmission is established to analyze the impact of various error sources on turntable accuracy. By employing function differential methods, key error sources are identified, and sensitivity coefficients are derived to guide precision… Read more: Design and Validation of a Dual-Segment Anti-Backlash Worm Gear System for Mars Probe Optical Payload Turrets

Abstract High reduction hypoid gear has the advantages of high transmission efficiency, strong carrying capacity and good silence. It is suitable for precision, high speed and heavy duty transmission systems. This paper proposes a point contact HRH tooth surface design method based on the conventional machining method of spiral bevel gear, and completes the motion… Read more: Meshing Performance Simulation and Test of High Reduction Hypoid Gear

1. Worm Gear Reducer Structure and Parameters Parameter Value Drive Mode Motor Input Power 24 kW Input Speed 1420 r/min Input Torque 161 N·m Transmission Ratio 34.6 (Gear Ratio , Worm Gear Ratio ) 2. Faults in Worm Gear Reducer Fault Cause Severe Heat and Oil Leakage Sliding friction in worm gear transmission generates heat, causing expansion… Read more: Fault Analysis and Improvement of Worm Gear Reducer for Mining Shuttle Car

Abstract The hypoid gear is a crucial component in drive axles, often operating under heavy-load and high-speed conditions. This leads to significant system deformation and complex tooth surface meshing. Existing research on gear meshing efficiency has limitations, especially in considering system deformation. This paper proposes a method to calculate the meshing efficiency of hypoid gears… Read more: Calculation Method of Hypoid Gear Meshing Efficiency of Drive Axles with Considering System Deformation

Abstract Friction noise in worm gear systems significantly impacts the Noise, Vibration, and Harshness (NVH) performance of electric power steering (EPS) systems. This study focuses on addressing friction-induced noise in the worm gear assembly of column-type EPS (C-EPS) systems. Key strategies include optimizing dimensional tolerances, selecting advanced materials, improving lubrication, and refining assembly processes. Experimental… Read more: Friction Noise Control in Worm Gear Systems of Electric Power Steering Systems

1. Internal Excitations of Hypoid Gear in Drive Axle System Excitation Type Cause Calculation Method Time-varying Stiffness Gear meshing process with non-integer contact ratio and elastic deformation Obtain discrete stiffness values from gear pair contact analysis and fit with 8th-order Fourier series Transmission Error Manufacturing and installation errors, gear thermal deformation, axis angle deviation Represented… Read more: Vibration Characteristics Analysis of Hypoid Gear Transmission System for Drive Axle

1. Hypoid Gear Tooth Surface Measurement and Modeling Measurement Instrument Gleason 350GMM Sampling Points on Tooth Surface 45 points (9 columns in tooth length direction, 5 rows in tooth height direction) Fitting Method for Tooth Surface NURBS surface fitting The tooth surface coordinates of the hypoid gear are measured by Gleason 350GMM, and then the… Read more: Transmission Error of Hypoid Gear based on Real Tooth Surface

1. Introduction Spur gears are fundamental components in mechanical transmission systems, widely used in industries such as aerospace, automotive, and energy due to their compact structure, high reliability, and broad speed ratio adaptability. However, manufacturing imperfections and operational deformations inevitably introduce tooth profile errors, which significantly affect the dynamic behavior of gear systems. These errors alter the… Read more: The Influence of Tooth Profile Error on Dynamic Characteristics of Spur Gear Transmission Systems

1. Introduction 1.1 Background and Significance In mechanical transmission systems, spur gears play a crucial role. The accurate analysis of the meshing stiffness of spur gear pairs is essential for understanding the dynamic characteristics and transmission performance of the gear system. Tooth length modification and axial misalignment are common phenomena in gear manufacturing and assembly… Read more: Spur Gear Pairs with Tooth Length Modification and Misalignment

1. Hypoid Gear Parameter Design The geometric parameters of hypoid gears are calculated based on the Gleason hypoid gear blank calculation formula and the characteristics of larger transmission ratio and spiral angle. The following table summarizes the main design parameters and their calculation methods: Parameter Calculation Method Pitch cone angle of large gear δ’2 tanδ’2=z2sin∑/1.2(z1+z2cos∑ Initial… Read more: Hypoid Gear: Parameter Design, Modeling, and Simulation Analysis

Abstract: This article focuses on the hot orbital forging process of aerospace cylindrical spur gear. It begins with an introduction to the significance of spur gear in various industries and the limitations of traditional machining methods. Then, it details the research on the hot orbital forging process, including the establishment of a finite element model,… Read more: Hot Orbital Forging Process of Aerospace Cylindrical Spur Gear

Abstract: This paper first introduces in detail the important parts that affect the power loss of the drive axle, analyzes the influence of the geometric parameters, lubrication parameters and bearing parameters of the hypoid gears commonly used on the drive axle on the power loss of the gears, and then conducts theoretical and experimental analyses… Read more: Analysis and Calculation of Transmission Efficiency of Commercial Vehicle Drive Axle

1. Introduction 1.1 Research Background and SignificanceSpur gear is widely used in robotics, automotive systems, and industrial machinery due to their high transmission accuracy, stability, and load-bearing capacity. However, tooth surface wear is an inevitable issue during gear operation, accounting for over 50% of mechanical component failures. High contact ratio (HCR) spur gear, defined as… Read more: Analysis of the Influence of Tooth Surface Wear on the Dynamics of High Contact Ratio Spur Gear

As a lead engineer specializing in transmission systems for electric vehicles, I have dedicated significant effort to refining the manufacturing processes of ZN-type worm gears. These components are critical to the performance of electric vehicle (EV) transmissions, where compact design, high torque transmission, and low noise are non-negotiable. Below, I present a comprehensive analysis of… Read more: Optimized Manufacturing Process for ZN-Type Worm Gear in New Energy Vehicle Transmissions

1. Introduction In the fields of automotive manufacturing and aerospace, there are strict requirements for the space and quality occupied by components. Aluminum alloy, with its good plasticity, high strength, and lightweight characteristics, is widely used in these fields. The worm gear housing, a core component of the worm gear in automotive transmissions, has complex… Read more: Analysis of Single Piece Processing Technology for Servo Worm Gear

1. Research Background and Significance Aspect Description Importance of Comfort In recent years, with the rapid development of the automotive industry, people have higher requirements for car comfort. The NVH performance of the drive axle directly affects the ride comfort of the whole vehicle. Drive Axle Composition The drive axle transmission system mainly consists of… Read more: Tooth Surface Modification and NVH Performance Optimization of Hypoid Gear of Automobile Drive Axle

Abstract: This article focuses on the optimization design of hypoid gear using the multi-objective genetic algorithm. Hypoid gear is widely used in various mechanical transmissions due to their unique characteristics. However, traditional design methods often face challenges in achieving the best performance in terms of volume and noise. By establishing a mathematical model with the… Read more: Optimization Design of Hypoid Gear Based on Multi-Objective Genetic Algorithm

1. Introduction In the realm of mechanical engineering, transmission systems play a crucial role as the core components of various . Their performance has a direct bearing on the operational efficiency and service life of the entire equipment. Among these transmission systems, the transmission, which is responsible for achieving different speed and torque conversions, has… Read more: Fuzzy PID Control for Constant Speed Output of New Bevel Gear – Roller Flat Disk Transmission A Comprehensive Analysis

1. Introduction Bevel gears are widely used in mechanical transmissions with intersecting shafts due to their high efficiency, stability, convenience, and high torque-bearing capacity. However, they are prone to failure in closed and heavy-load conditions, which may lead to property loss and even casualties. Traditional fault diagnosis methods rely too much on prior knowledge and… Read more: Research on Fault Diagnosis Method for Bevel Gear

1. Introduction Gear transmission is a crucial component in the power output system of aero – engines. It is widely used in various fields such as aerospace, ships, and automotive engineering due to its advantages like compact structure, high transmission efficiency, smooth operation, strong load – bearing capacity, and long service life. However, in practical… Read more: A Comprehensive Analysis of Aero – Engine Reducer Gear Tooth Surface Spalling Failure

The case of worm gear broken teeth in a freight elevator traction machine is analyzed. The worm gear was found to have broken teeth during inspection, and the possible causes were initially judged to be insufficient lubrication and poor quality of the worm gear teeth. The following is a detailed analysis of the case: 1. Initial… Read more: Case Analysis of Worm Gear Broken Teeth of Freight Elevator Traction Machine

This article delves deep into the design of aeronautical engine face gear central transmission. Face gears, as crucial components in aircraft engines, play a vital role in the transmission system’s stability and reliability. By analyzing their working principles, meshing characteristics, and dynamic properties, we propose a detailed design plan for face gear central transmission, aiming… Read more: A Comprehensive Guide to Aeronautical Engine Face Gear Central Transmission Design

Abstract Accurate analysis of meshing misalignment in spiral bevel gear transmission systems under load is critical for optimizing gear tooth profiles and ensuring reliable performance. Traditional beam element models often introduce significant errors when analyzing shaft deformation in complex transmission systems, leading to unreliable misalignment predictions. This study proposes a stepwise solid finite element method… Read more: Analysis of Meshing Misalignment in Spiral Bevel Gear Transmission Systems

1. Introduction With the rapid development of the automotive industry, the demand for differential gears in cars is increasing exponentially. The quality of these gears directly impacts the vehicle’s transmission performance, fuel efficiency, and overall driving experience. Cold extrusion, as an advanced manufacturing process, has emerged as a game – changer in the production of… Read more: Research on Milling Technology of Gear Cold Extrusion Die Based on DEFORM

1. Introduction Hypoid gears with low crossed shaft angle have unique advantages in various fields. However, the current research on them is still in the initial stage, lacking systematic design and analysis methods. This article aims to address these issues. Researcher Contribution DOONER et al. Proposed the application idea of hypoid gears in low crossed… Read more: Design and Analysis of Hypoid Gear with Low Crossed Shaft Angle

This paper focuses on the study of helical cylindrical gears’ meshing dislocation and modification. By considering the influence of system stiffness and random factors, the meshing dislocation of gear pairs is analyzed in detail. Four different cases are set up for comparison and research, and the effectiveness of gear modification in compensating for meshing dislocation… Read more: Research on the Modification of Helical Cylindrical Gears Based on Meshing Dislocation

Abstract Gear vibration and noise are important parameters that affect the transmission performance. The vibration and noise control of the gear transmission system has become a very important research field. Presently, the main methods of vibration control of the gear transmission system are increasing coincidence, shape modification, displacement, damping, etc. In this study, a novel… Read more: Vibration Reduction Method by Gear Staggering Phase Tuning for Spur Gear

This article focuses on spiral bevel gears, which are crucial components in various mechanical systems. It delves into their dynamics under steady – state and variable – speed transient conditions. A detailed analysis of the off – line – of – action – contact phenomenon, caused by tooth loading deformation, is presented. The establishment of… Read more: Spiral Bevel Gears A Comprehensive Analysis of Dynamics in Steady and Transient Conditions

1. Introduction 2. Mathematical Description of Time-Varying Meshing Parameters 2.1 Equivalent Meshing Force is the resultant vector of the instantaneous equivalent meshing forces on all contact tooth surfaces at a certain moment. Its components along the x, y, and z axes are calculated as  where q is the number of instantaneous contact tooth pairs, and   is the… Read more: Analysis of Evolution of Meshing Parameters of Hypoid Gear Drive under Changing Loads

1. Introduction In modern mechanical engineering, gear transmission systems are widely used in various fields such as automotive, aerospace, and industrial machinery. Cylindrical gears, as a key component of gear transmission, their transmission accuracy directly affects the performance, reliability, and efficiency of the entire mechanical system. However, in actual operation, factors like elastic deformation and… Read more: Analysis and Optimization of Cylindrical Gear Transmission Precision Considering Elastic Error

Abstract: Hypoid gears play a crucial role in automotive drive axles, significantly impacting vehicle performance. This article focuses on the multi – objective optimization of hypoid gears using the Ease off method. It details the construction of a neural network surrogate model to describe the relationships between Ease off modification parameters and key performance metrics… Read more: Multi – objective Optimization of Hypoid Gear Based on Ease off

This article delves into the grazing collision characteristics of non – orthogonal face gear transmission systems. By building a dynamic model considering multiple nonlinear factors, establishing Poincaré maps, and analyzing bifurcation conditions, the impact of grazing bifurcation on the system’s dynamics is explored. The study findings can offer a theoretical basis for enhancing the reliability… Read more: Non – orthogonal Face Gear Transmission System A Comprehensive Analysis of Grazing Collision Characteristics

Abstract Localized tooth breakage is one of the common failures of spur gears, which affects the smooth and safe operation of spur gear transmission systems. The tooth collision cannot be neglected, and it is especially important to reveal the meshing-impacting dynamic characteristics of the gear system under localized tooth breakage to improve the safe and… Read more: Spur Gear Systems Considering Friction under Localized Tooth Breakage

This article focuses on the design and optimization of non – circular gear – driven drag – type carrot harvesting devices. It analyzes the problems of traditional harvesting devices, proposes the design concept of non – circular gear – driven devices, and conducts in – depth research on device design, simulation, experimental verification, and performance… Read more: Design and Optimization of Non – circular Gear – Driven Drag – type Carrot Harvesting Devices

1. Introduction Spiral bevel gear play a crucial role in many mechanical transmission systems, especially in the aviation industry. They are widely used in helicopter main reduction systems to transmit power. In order to meet the requirements of aviation products, such as high reliability, high precision, high strength, good wear resistance and light weight, spiral… Read more: Research and Analysis on Heat Treatment Deformation Compensation Technology of Spiral Bevel Gear

1. Introduction Small turbine engines play a crucial role in modern aerospace applications, powering a variety of aircraft such as unmanned aerial vehicles (UAVs), small reconnaissance planes, and certain types of missiles. These engines are known for their high power – to – weight ratio, compact size, and relatively low fuel consumption. However, one of… Read more: Verification of Fast Starting Ability of Main Bearings for Small Turbine Engines Under Starved Oil A Comprehensive Analysis

1. Introduction Spiral bevel gears are crucial components in mechanical equipment, widely used in the transmission systems of helicopters, automobiles, etc. The quality of spiral bevel gears directly affects the service life of mechanical equipment. Heat treatment and grinding processes are important steps in the manufacturing of spiral bevel gears, which can have an impact… Read more: Heat Treatment and Grinding Residual Stress Finite Element Analysis of Spiral Bevel Gear

1. Introduction In recent years, with the continuous increase in space launch missions around the world, the demand for low – cost rockets and flight – based transportation services has become more and more urgent. Reusable liquid rocket engines have emerged as a crucial development direction for future space exploration. Both domestic and international research… Read more: Research on the Low – Cycle Fatigue Life and Reliability of Tuning Fork – Type Integral Blisks in Liquid Rocket Engine Turbopumps

1. Introduction The operating accuracy of spur gear systems is crucial for the performance of transmission systems, especially in complex environments like those in aero engines where tooth surface faults such as wear are common. This has led to extensive research on predicting gear wear and computing meshing stiffness. 1.1 Research Background Spur gear systems… Read more: Meshing Characteristic Analysis of Spur Gear Pair with Tooth Surface Wear Fault Based on Improved Fractal Method

1. Introduction Liquid rocket engines are the backbone of modern space exploration, powering spacecraft into orbit and enabling interplanetary missions. At the heart of these engines lies the turbopump, a crucial component that plays a vital role in the engine’s performance and reliability. Turbopumps are responsible for pressurizing the propellants, ensuring a stable and efficient… Read more: Turbopump Vibration in Liquid Rocket Engines A Comprehensive Review and Future Perspectives

Abstract: This article focuses on the optimization of cylindrical spur gear parametric modeling in SolidWorks. It begins with an introduction to the importance of accurate gear modeling in mechanical transmission systems, highlighting the widespread use of spur gear. The challenges in existing SolidWorks-based gear modeling methods are identified, such as inaccurate tooth profiles and difficulties… Read more: Optimization of Precisely Parametric Modeling of Cylindrical Spur Gear Based on SolidWorks

1. Introduction In the realm of aviation engine technology, the continuous pursuit of higher performance and efficiency has led to a significant increase in turbine inlet temperatures. As a result, the cooling of turbine components, especially turbine guide vanes, has become a crucial area of research. Traditional cooling methods using high – pressure air from… Read more: A Comprehensive Study on the Numerical Simulation of a Novel High – Temperature Heat Pipe for Turbine Guide Vanes

Abstract: This article focuses on the reverse meshing spur gear fertilizer distributor to explore the impact of the deflection angle on its fertilizer discharge performance. By determining the theoretical fertilizer discharge amount through the “mass attribute” function in SolidWorks and simulating the fertilizer discharge process using the discrete element simulation software EDEM, a single-factor test… Read more: The Influence of the Deflection Angle of the Reverse Meshing Spur Gear Fertilizer Distributor on the Fertilizer Performance

This article delves deep into the innovative realm of the new type of plane helical cylindrical gear. By presenting its novel machining method, comprehensive geometric characteristics, and superior meshing performance, it showcases how this gear is set to revolutionize the field of mechanical transmission. Through in – depth research and analysis, we aim to provide… Read more: The New Type of Plane Helical Cylindrical Gear A Revolutionary Leap in Gear Technology

Abstract This article focuses on the performance analysis and test verification of spiral bevel gear transmission systems. It begins with an introduction to the importance and challenges of such systems, followed by a detailed discussion on the construction of mechanical models for key components, static and dynamic characteristics analysis methods, and experimental validation. The research aims… Read more: Spiral Bevel Gear Transmission System Performance Analysis and Test Verification

1. Introduction Gear transmission is a fundamental component in a wide range of industries, including construction machinery, vehicles, ships, and aerospace. The dynamic characteristics of gear systems have a profound impact on the overall performance and service life of machinery. Hyperboloidal – type normal circular – arc gears have emerged as a potential solution for… Read more: Dynamic Analysis of Hyperboloidal – Type Normal Circular – Arc Gears A Comprehensive Exploration

Abstract: This comprehensive article delves into the world of spur gear, exploring their design principles, manufacturing techniques, and diverse applications. It begins with an overview of spur gear fundamentals, including their geometry and kinematics. The design section covers aspects such as gear tooth profiles, contact ratios, and the determination of key parameters like module and… Read more: Analysis of Spur Gear: Design, Manufacturing, and Applications

1. Introduction In the aerospace industry, the efficient operation of components is crucial for the overall performance and safety of aircraft. The circular arc oscillating internal gear pump is a vital part in many aerospace systems, especially in the lubrication and fuel delivery processes. However, the presence of gas – liquid two – phase flow… Read more: Numerical Analysis on the Performance of Circular Arc Oscillating Internal Gear Pump for Aviation A Comprehensive Study

1. Introduction Spiral bevel gear plays crucial role in mechanical transmission systems, enabling the transfer of motion and power between intersecting or skew shafts. These gears offer several advantages such as high contact ratio, strong load-carrying capacity, smooth transmission, and low noise. However, their complex three-dimensional geometry and unique manufacturing requirements pose significant challenges in… Read more: Accurate modeling of equidistant spiral bevel gear and trial production

1. Introduction In the landscape of modern manufacturing, the demand for high – precision components is on the rise, especially in industries such as robotics, aerospace, and defense. Cycloid gear forming grinding machines play a crucial role in the production of precision gears. The 立柱 (column) of these machines is a key structural element that… Read more: Research on Multi – Stage Optimization of Cycloid Gear Forming Grinding Machine Column A Comprehensive Approach to Enhance Machine Tool Performance