1. Introduction 1.1 Significance of Cylindrical Spur Gears Cylindrical spur gears are fundamental transmission components widely utilized in aerospace, aviation, automotive, and mechanical fields. The level of gear processing technology serves as a crucial criterion for evaluating a nation’s mechanical manufacturing capabilities. In aerospace applications, high-quality gears are essential for ensuring the reliable operation of… Read more: Analysis of Hot Orbital Forging Process for Aerospace Cylindrical Spur Gears

Abstract:The miter gear noise issue in miter saws with a triple geared drive structure. The root causes of the noise are analyzed from aspects such as gear backlash, gear installation, and critical support components. Corresponding improvement measures are proposed. 1. Introduction Miter saws are portable electric tools relying on rotating toothed blades (with diameters ≤… Read more: Analysis and Countermeasures for Miter Gear Noise Issue

Abstract This paper delves into the intricate mechanisms influencing the lubrication effectiveness of cylindrical gears with variable hyperbolic circular-arc-tooth traces (VH-CATT) under oil injection lubrication, particularly focusing on the complex airflow behaviors induced by their unique tooth profile. Utilizing computational fluid dynamics (CFD), the study models and simplifies the fluid domain, analyzes the interference between… Read more: Lubrication Flow Field of Cylindrical Gear with Variable Hyperbolic Circular-arc-tooth Trace Using Oil Injection

1. Introduction 1.1 Background and Significance With the rapid development of national defense, robotics, and aerospace technology, precision machine tools are advancing towards high speed, high efficiency, and high precision. The cycloid gear forming grinding machine is one of the core equipments for realizing the localization of industrial robot cycloid pinwheel precision reducers in China.… Read more: Research and Optimization of Cycloid Gear Forming Grinding Machine Column

Abstract:This paper focuses on improving the meshing state of standard tooth face herringbone gear by adopting modification techniques. To reduce vibration and noise during transmission and enhance the stability of the transmission system, Monte Carlo method and genetic algorithm are employed for topology modification. The quadratic parabola is selected as the modification curve. Load analysis… Read more: Research on Topology Modification of Herringbone Gear

1. Introduction 1.1 Research Background RV reducer, as an excellent speed reduction mechanism, is widely used in various fields such as industrial robots, machine tools, and medical testing equipment. The common structure of RV reducer is shown in Figure 1.1. It adopts a cycloidal pin gear planetary gear mechanism, which has the advantages of high… Read more: Research on Cutting Force and Deformation during Cycloidal Gear Hobbing of RV Reducer

AbstractThis paper presents a comprehensive analysis of the evolution of meshing parameters of a hypoid gear drive under varying loads. Using loaded tooth contact analysis (LTCA), parameters such as equivalent meshing force, loaded transmission error, comprehensive elastic deformation, time-varying meshing stiffness, and actual contact ratio were obtained. The results provide insights into the dynamic meshing… Read more: Analysis of Evolution of Meshing Parameters of Hypoid Gear Drive Under Changing Loads

The in-depth study on the optimization design of mesh efficiency for hypoid gears in drive axles is conducted. The focus is on cycloid hypoid gears, which are widely used in commercial vehicle drive axles due to their short production cycle. The research aims to improve gear mesh efficiency, which is crucial for achieving energy conservation… Read more: Drive Axle Hypoid Gear Mesh Efficiency Optimization Design Research

Abstract: This study focuses on the characteristics of flow field and temperature field in high-speed aeronautical bevel gear with linear velocities up to 160 m/s under oil injection lubrication. Utilizing a thermal-fluid coupling analysis model, significant findings are revealed concerning lubrication effectiveness, convective heat transfer, and windage loss, providing support for high-speed gear transmission lubrication… Read more: Linear Velocity on Oil Injection Lubrication Flow Field and Temperature Field in High-Speed Aeronautical Bevel Gear

Abstract: This paper focuses on the optimization design of hypoid gear transmissions utilizing a multi-objective genetic algorithm. Considering the significant impact of hypoid gear volume on manufacturing costs and the influence of noise on riding comfort, an optimization model is established with the objectives of minimizing transmission volume and noise while ensuring sufficient load capacity.… Read more: Optimization Design of Hypoid Gears Based on Multi-objective Genetic Algorithm

This article focuses on the complex mechanism and easily fluctuating load problems of crack faults in gear systems. It first proposes a modified algorithm based on the potential energy method to analyze the influence of crack parameters on the time-varying meshing stiffness. Then, a gear system dynamics model considering comprehensive meshing errors is established to… Read more: Vibration Response Analysis of Gear Systems with Tooth Root Cracks

Abstract:With the rapid development of the coal industry, the stability of scraper reducer bevel gear pairs, as the core components of coal mine conveying systems, directly affects the safety and efficiency of the entire production line. This article analyzes common types of damage, preventive measures, and new ideas for bevel gear pairs in scraper reducers… Read more: Damage and Prevention of Bevel Gear Pairs in Scraper Reducers for Coal Mines

AbstractThis paper focuses on the modeling and optimization of assembly errors in the spindle cutter disc component of a bevel gear milling machine. By establishing geometric feature error models based on small displacement torsors, analyzing error transmission attributes under series and parallel mating conditions, and proposing a tolerance optimization model considering tolerance cost, assembly accuracy… Read more: Assembly Errors in the Spindle Cutter Disc Component of Bevel Gear Milling Machine

Gear transmission systems are widely used in various fields, but they are prone to faults, especially tooth root cracks. This article focuses on analyzing the vibration response of gear systems with tooth root cracks. It first modifies the potential energy method to calculate the time-varying meshing stiffness more accurately, considering the influence of crack parameters.… Read more: Analysis of Vibration Response of Gear System with Tooth Root Cracks

Abstract:This paper presents a novel collaborative solution method for tooth contact analysis (TCA) of spiral bevel gears, considering both contact pattern and transmission error. The proposed method aims to enhance the accuracy, efficiency, and stability of TCA evaluations. Keywords: spiral bevel gear; tooth contact analysis (TCA); contact pattern; transmission error 1. Introduction Spiral bevel gears… Read more: Spiral Bevel Gear TCA Contact Pattern and Transmission Error Collaborative Solution Method

1. Introduction Gear, as a crucial mechanical component with teeth on the rim for continuous meshing to transmit motion and power, plays an indispensable role in various industries. With the continuous development of the automotive, mechanical manufacturing, and aerospace industries, the demand for gear products has been steadily increasing. This has led to the active… Read more: Gear Manufacturing Industry: Problems, Countermeasures, and Development Trends

Abstract:This paper proposes an optimization method based on the dual interlocking circular cutters (DICC) machining of straight bevel gears to minimize the transmission error fluctuation amount, aiming to improve their meshing performance. By introducing tool modification coefficients, average cutter radius, and blade angle, a tooth surface model considering tooth profile and tooth length modification is… Read more: Analysis and Optimization of Meshing Performance of Straight Bevel Gear Machined by the Dual Interlocking Circular Cutters

1. Introduction In the field of industrial automation, industrial robots play a crucial role. The RV gearbox, as a vital component in the power transmission system of industrial robots, is prone to failure. Therefore, effective fault diagnosis methods for RV gearboxes are of great significance for ensuring the stable operation of industrial robots and improving… Read more: Improvement methods for early gear failures

1. Introduction In the field of high – speed train technology, the gear transmission system plays a crucial role in transmitting power and ensuring the smooth operation of the train. However, due to various factors such as heavy loads, high speeds, and complex operating conditions, the gear teeth may experience wear, pitting, and breakage faults.… Read more: Research on the Nonlinear Dynamic Characteristics of Gear Tooth Breakage Fault in High – speed Train Gear Transmission System

1. Introduction 2. Design Principle of Electric Push Rod Type Protective Door 3. Hardware Structure 3.1 Screw Design of Electric Push Rod 3.1.1 Screw Parameters Parameter Value Thread Type Trapezoidal Thread Number of Threads 4 Pitch Circle Diameter 16.10mm Axial Pitch 4.45mm Thread Angle 30° 3.1.2 Screw Efficiency 3.1.3 Shear Strength Check of Screw 3.1.4… Read more: Design of Electric Push Rod Type Protective Door for CNC Machine Tools Based on Worm Gear Structure

1. Introduction In the field of wind power generation, the reliable operation of wind turbine gearboxes is crucial for the efficient conversion of wind energy into electrical energy. Sliding bearings, with their excellent performance and relatively low maintenance costs, are becoming the preferred choice for gearbox bearings, especially as wind turbines increase in power and… Read more: Ultrasonic Detection of Debonding Defects in Wind Turbine Gearbox Sliding Bearings: Research and Application

1. Introduction Wind energy has emerged as a crucial renewable energy source in the global pursuit of sustainable power generation. Wind turbines, with their ability to convert the kinetic energy of the wind into electrical energy, play a central role in this transition. The gearbox is a vital component within the wind turbine system, serving… Read more: Analysis of Gear Damage in Wind Turbine GearboxesCauses and Prevention

Abstract This article focuses on optimizing the churning resistance of the hypoid gear in the rear axle of a vehicle. By establishing a three-dimensional numerical model of the rear axle based on the VOF two-phase flow model and the standard k – ε turbulence model, the churning power loss mechanism of the hypoid gear is… Read more: Optimization of Churning Resistance of Hypoid Gear in Automobile Rear Axle

1. Introduction Beveloid gears with crossed axes are widely used in various fields such as all-wheel-drive vehicles, marine gearboxes, and industrial robots due to their compact structure, high transmission efficiency, and low cost. They have broad market application prospects. In recent years, numerous studies have been conducted on beveloid gears by scholars at home and… Read more: Analysis of the Influence of Tool Profile on the Contact Characteristics of Crossed-Axis Beveloid Gear Transmission

1. Introduction Spur gears are widely used in various industrial applications due to their simplicity and efficiency in power transmission. The mesh stiffness of spur gears is a crucial parameter in gear dynamics as it affects the vibration, noise, and durability of the gear system. In this study, we focus on the influence of tooth… Read more: Influence of Tooth Friction and Geometric Eccentricity on Mesh Stiffness of Profile Shifted Spur Gear Pairs

Introduction Gears play a vital role in mechanical systems, enabling the transfer of power and motion between rotating shafts. Inclined – plane gears, also known as helical gears, are a significant type of gears with unique characteristics and wide – ranging applications. This article aims to provide a comprehensive understanding of inclined – plane gears,… Read more: Application areas of bevel gears

1. Introduction In the company’s rear axle, the passive bevel gear of the main reducer is bolted to the differential housing. The bolt head, protruding outside the flange surface of the differential housing, intermittently stirs the lubricating oil during operation, creating a resistance torque similar to “paddling” and resulting in churning losses and reduced transmission… Read more: Numerical Simulation and Drag Reduction Study of Churning Losses in Automobile Rear Axle Hypoid Gear

Introduction Gears are mechanical components that play a crucial role in transmitting power and motion between shafts. Inclined gears, also known as helical gears, are a significant type of gears with unique characteristics and wide – ranging applications. This article aims to provide an in – depth exploration of inclined gears, covering their structure, working… Read more: Inclined Gear A Comprehensive Overview

Abstract: This article focuses on the study of spur gears. It begins with an introduction to the research background and significance of spur gears in mechanical transmission, highlighting their importance in modern machinery. The methods for calculating spur gear meshing stiffness are then detailed, including traditional and advanced techniques. A comprehensive model considering assembly error… Read more: Spur Gear Meshing Stiffness under the Influence of Assembly Error and Tooth Surface Friction

1. Introduction Beveloid gears are a unique type of gears that have found significant applications in various mechanical systems. They possess distinct geometric features that set them apart from traditional gears such as spur gears and bevel gears. Understanding the nature and capabilities of beveloid gears is crucial for engineers and designers in the field… Read more: Beveloid Gear An In – depth Exploration of Its Advantages and Applications

Introduction Beveloid gears are a unique type of gears that have found applications in various mechanical systems. They possess characteristics that make them distinct from traditional bevel gears and other gear types. This article aims to provide a comprehensive understanding of beveloid gears, covering their structure, working principles, advantages, disadvantages, manufacturing processes, and applications. Definition… Read more: Beveloid Gears: An In – depth Exploration

1. Introduction Gear is an essential mechanical component widely used in various fields. As a crucial part of the manufacturing industry, the gear manufacturing sector has a significant impact on the development of many industries. This article aims to comprehensively analyze the current situation, problems, solutions, and development trends of the gear manufacturing industry. 2.… Read more: Gear Manufacturing Industry Problems, Solutions and Development Trends

his article focuses on the topology modification of herringbone gears. It begins with an introduction to the importance of herringbone gears in various industries and the challenges they face, such as vibration and stress concentration. The methods of Monte Carlo and genetic algorithms for topology modification are then described in detail. The article also presents… Read more: Research on Topology Modification of Herringbone Gear and Its Significance in Gear Transmission Systems

1. Introduction Planetary gear systems play a crucial role in various mechanical applications due to their compact structure, high transmission ratio, efficiency, and strong load-carrying capacity. However, manufacturing errors during the production of gears and planet carriers can lead to increased vibration and noise, affecting the safety and reliability of the entire system. Among these… Read more: Pin Shaft Position Error Analysis of Planetary Gear System Dynamic Characteristics

1. Introduction With the rapid development of new energy vehicles, the demand for vehicle performance in various aspects is increasing. Among them, the issue of noise, vibration, and harshness (NVH) has become a key factor affecting the comfort and quality of vehicles. In particular, the gear order noise of the transmission, which was previously masked… Read more: Design Method for Gear Order Noise of New Energy Passenger Vehicle Transmission

This article comprehensively analyzes the influence of bearing clearance on gear shaping. It begins with an introduction to the basic concepts of bearing clearance and gear shaping, followed by a detailed exploration of how bearing clearance affects gear contact, load distribution, and safety factors. Through case studies and software simulations, specific data and trends are… Read more: Analysis of the Influence of Bearing Clearance on Gear Shaping and Its Optimization

This article comprehensively analyzes the influence of bearing clearance on gear modification. It begins with an introduction to the key concepts of bearing clearance and gear modification, followed by a detailed discussion on how bearing clearance affects gear contact and safety factors. Through case studies and software simulations, specific data and trends are presented. Based… Read more: Analysis of the Influence of Bearing Clearance on Gear Modification and Its Optimization

This article focuses on a new type of plane helical cylindrical gear and its machining method. It begins with an introduction to the background and significance of the research, highlighting the limitations of existing cylindrical gear machining methods and the need for improvement. The main body of the article elaborates on the machining principle of… Read more: New Type of Plane Helical Cylindrical Gear and Its Machining Method

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 are presented, along with experimental verification.… Read more: Spiral Bevel Gear Transmission System Performance Analysis and Test Verification

This article focuses on the spindle system of a spiral bevel gear milling machine, an essential component in the manufacturing of spiral bevel gears. The dynamic characteristics of the spindle system and machining process parameters significantly impact the gear’s tooth surface quality and machining efficiency. Current research on spindle system dynamics is mainly centered on… Read more: Analysis of Dynamic Characteristics of Spiral Bevel Gear Milling Machine Spindle System and Machining Process Matching Method

This article focuses on the spindle system of a spiral bevel gear milling machine, an essential component in gear manufacturing. The dynamic characteristics of the spindle system and the selection of processing parameters significantly impact the gear’s tooth surface quality and machining efficiency. Current research on spindle system dynamics is often limited to general milling… Read more: Spiral Bevel Gear Milling Machine Spindle System Dynamic Characteristics Analysis and Processing Technology Matching Method

This article focuses on the assembly accuracy of the cutter spindle components in a bevel gear machine tool. It begins with an introduction to the research background and significance, highlighting the importance of accurate assembly for the quality of bevel gears and the overall performance of the machine tool. The study involves tolerance modeling, error… Read more: Research on Assembly Accuracy Evaluation and Optimization of Bevel Gear Machine Tool Cutter Spindle Components

This article focuses on the dynamic characteristics of the spindle system of a spiral bevel gear milling machine and its matching with processing technology. It begins with an introduction to the research background and significance, followed by a detailed analysis of the spindle system’s dynamic modeling and response. The cutting force, a crucial factor in… Read more: Spiral Bevel Gear Milling Machine Spindle System Dynamic Characteristics Analysis and Processing Technology Matching Method

This article focuses on the research of spiral bevel gears with a small number of teeth. It first introduces the background and significance of the research, then details the design methods of geometric parameters, the derivation of tooth surface equations, the solution of machining parameters, the simulation of tooth surface meshing, and the gear-cutting and… Read more: Research on the Machining Parameters Calculation Simulation and Gear-Cutting Test of Spiral Bevel Gears with a Small Number of Teeth Based on the Curved-Surface Synthesis Method

1. Introduction Gear transmission is a crucial component in mechanical systems, and cylindrical gears are widely used. The performance of gear pairs directly affects the overall performance of machinery. Traditional machining methods for cylindrical gears have certain limitations, such as low machining efficiency and potential meshing load problems. This article focuses on a new type… Read more: New Type of Plane Helical Cylindrical Gear and Its Machining Method

This article focuses on the fatigue life analysis of the output gear pair of the reducer used in shared bicycle locks. With the popularization of shared bicycles, the development and application of relevant reducers have become crucial. The fatigue life of the output gear pair significantly affects the effective life of the reducer. Traditional methods… Read more: Fatigue Life Analysis of Output Gear Pair of Reducer for Shared Bicycle Lock

1. Introduction Aviation high – speed gear pumps are crucial power output devices in aircraft hydraulic systems. To meet the development requirements of high thrust – to – weight ratio and low fuel consumption of aircraft, gear pumps need to increase the flow rate without increasing the volume and mass, which requires a higher rotational… Read more: A Study on the Lubrication Characteristics of Gear End Face Friction Pairs in Aviation High – speed Gear Pumps

1. Introduction Helical gears play a crucial role in many mechanical transmission systems. However, the occurrence of cracks can significantly affect their performance. The meshing stiffness of helical gears is a key factor influencing the dynamic behavior of gear systems. In this article, we will explore the research on the meshing stiffness calculation model of… Read more: Helical Gears: The Comprehensive Study on Meshing Stiffness under Crack Conditions

Abstract: This article focuses on the dynamic characteristics of spur gears with multiple faults, considering the tooth root transition curve. It first introduces the background and significance of studying spur gear faults. Then, it presents a detailed analysis of the gear pair coupling vibration analysis model and the calculation method of gear time-varying meshing stiffness… Read more: Research on the Dynamic Characteristics of Spur Gear with Multiple Faults Considering the Tooth Root Transition Curve

This article focuses on the importance of detecting the wear state of multi-stage planetary gears in shield machine reducers. It reviews various methods and techniques for gear wear detection, including signal processing and image analysis methods. The article also presents experimental results comparing different detection methods and emphasizes the significance of accurate wear detection for… Read more: Gear Wear Detection in Shield Machine Reducers A Comprehensive Review

Abstract: This article focuses on the study of involute beveloid spur gear transmission error. Based on gear meshing principles and involute beveloid gear machining principles, relevant models are established and verified. The influences of different factors such as load, speed, and axis installation error on gear transmission error are analyzed in detail. The results provide… Read more: Error Study of Involute Beveloid Spur Gear Transmission

This article focuses on the dynamic optimization of macro parameters in large mining gear transmission systems. It begins with an introduction to the importance of such optimization in the context of large and complex mining equipment. The core of the discussion lies in the establishment of a parameterized dynamic model and an optimization model. Through… Read more: Dynamic Optimization of Macro Parameters in Large Mining Gear Transmission Systems

Abstract: This article focuses on the cold precision forging process of cylindrical spur gear. Based on the existing process, two new process schemes, “flash hole” (Scheme B) and “diversion groove” (Scheme C), are introduced. Through numerical analysis using Deform – 3D software, it is verified that these two schemes can significantly reduce the forming load… Read more: Numerical Analysis and Optimization of Cold Precision Forging Process for Cylindrical Spur Gear

1. Introduction Gear-rotor systems are widely used in various industries for motion and power transmission. With the increasing demands of modern industry for spur gear transmission systems towards heavy loads, high speeds, and harsh working environments, spur gear is more prone to failures. Among gear failures, tooth root cracks account for nearly 40% of all… Read more: Time-Varying Meshing Stiffness Algorithm of Spur Gear

This article focuses on the fracture failure analysis of bevel gears. It begins with an introduction to the importance of bevel gears in automotive transmission systems and their manufacturing processes. Then, through a detailed analysis of a failed bevel gear using various methods such as macroscopic fracture morphology observation, elemental spectrochemical composition analysis, metallographic microstructure… Read more: Fracture Failure Analysis of Bevel Gear and Its Related Research

Abstract: This article focuses on the precision forging technology of spur gear, especially those made of 17Cr2Ni2MoVNb steel. It discusses the effects of different forging ratios and normalizing temperatures on the material’s properties, the design and simulation of the forging process, and the manufacturing of spur gear forgings. The results show that the closed forging… Read more: Research on Precision Forging Technology of Spur Gear

1. Introduction Gear systems play a crucial role in various mechanical applications, and the proper meshing of gears is essential for efficient power transmission and the overall performance of machinery. Spur bevel gears, in particular, have unique characteristics and requirements when it comes to meshing. This article focuses on the design and analysis of a… Read more: Design and Analysis of a Spur Bevel Gear Meshing Detection Fixture

1. Introduction Spiral bevel gears play a crucial role in aviation transmission systems, such as in aircraft engines, engine reducers, and helicopter transmission systems. The milling process is a key step in the manufacturing of these gears, which significantly affects the final quality and performance of the gears. This article focuses on the design and… Read more: Design and Verification of Milling Process for Aviation Transmission Spiral Bevel Gears

Abstract The accurate explanation of the tooth deregulation or back meshing induced by the backlash can provide theoretical guidance for the optimal design of the gear structure. Based on the Johnson contact force model, the dynamic meshing force calculation model of an involute internal meshing spur gear transmission system was constructed, taking into account the… Read more: Internal Meshing Spur Gear System Based on the Johnson Contact Model

This article focuses on the analysis of the vibration and sound characteristics of the ball mill gear transmission system. It begins with an exploration of the material properties of the gear system, delving into the factors influencing gear material selection and the correlation between material properties and gear system performance. Subsequently, the installation and technical… Read more: Analysis of Vibration and Sound Characteristics of Ball Mill Gear Transmission System