This study investigates the dynamic behavior of high contact ratio cylindrical gears under tooth surface wear. By combining energy-based stiffness modeling and Archard wear theory, a comprehensive framework is developed to analyze the interaction between progressive wear patterns and nonlinear gear dynamics. 1. Dynamic Model Formulation The single-degree-of-freedom dynamic model for cylindrical gears is expressed… Read more: Dynamic Analysis of High Contact Ratio Cylindrical Gears Considering Surface Wear

In modern society, elevators serve as critical transportation tools, and their safe operation is paramount. As a key component of elevator systems, the asynchronous machine reducer, which houses the worm gears, plays a vital role in power transmission. However, internal wear in these worm gears can lead to severe failures, posing safety risks. Traditional inspection… Read more: Wear Analysis of Worm Gears in Asynchronous Machine Reducers Using Oil Detection Technology

This study proposes a method to analyze the dynamic transmission error (DTE) of spiral bevel gears by incorporating actual tooth surfaces, material damping, rotational speed, and elastic support systems. The research combines geometric properties, finite element analysis (FEA), and dynamic modeling to evaluate the effects of tooth surface errors, operating conditions, and system flexibility on… Read more: Dynamic Transmission Error Analysis of Spiral Bevel Gears with Actual Tooth Surfaces

AbstractThis paper presents a comprehensive analysis of the root causes of gear shaving surface scratches and formulates reasonable solutions to achieve control objectives. Through practical implementation, the long-standing issue of gear surface scratches at our company has been completely resolved, effectively enhancing gear surface quality and reducing gear mesh noise. 1. IntroductionNoise control in gear… Read more: An In-depth Analysis and Solution to Gear Shaving Surface Scratches

Helical gears are critical components in mechanical transmission systems, and their spiral angle accuracy significantly impacts transmission smoothness, noise levels, and service life. Traditional methods for analyzing the spiral angle of helical gears, such as geometric projection-based measurements and contact probe-based detection, often fail to capture subtle variations in the spiral line and dynamic coupling… Read more: Laser Interference Detection Algorithm for Spiral Angle Deviation of Helical Gears in Processing Machine Tools

Metal injection molding (MIM) is widely recognized for producing small, complex-shaped metal components, particularly iron-based alloys under 50 g. However, achieving precision in spur gears—repetitive-feature components demanding high dimensional accuracy—remains challenging. This study investigates the thickness direction deviation of a 17-4PH stainless steel spur gear fabricated via MIM and proposes process optimizations to enhance geometric… Read more: Improving Thickness Direction Deviation of 17-4PH Spur Gear Fabricated via Metal Injection Molding

As an engineer specializing in mechanical power transmission systems, I have extensive experience with worm gear reducers, which are widely used in low-speed, high-torque applications across various industries. These devices play a critical role in converting high-speed motor input into controlled, high-torque output through the unique interaction between the worm and the worm gear. The… Read more: Common Faults and Maintenance of Worm Gear Reducers

With the rapid growth of the electric vehicle industry, the demand for high-precision internal helical gears has surged. These gears are critical components in planetary gear reducers, which are widely used in wind turbine gearboxes, shield machine main drives, and electric vehicle reduction systems due to their compact structure, high reduction ratios, and efficient power… Read more: A Method for Generating Grinding of Internal Helical Gears Based on Spherical Worm Grinding Wheel

In modern mechanical engineering, helical gears play a pivotal role in power transmission systems due to their superior performance characteristics. As an engineer specializing in gear design, I have extensively studied the behavior of helical gears under various operating conditions. This article delves into the fundamental aspects of helical gears, including their geometric design, dynamic… Read more: Comprehensive Analysis of Helical Gears: Design, Dynamics, and Lubrication

Non-circular gears enable unique nonlinear motion transmission capabilities critical for automotive, robotics, and industrial machinery applications. While design methodologies for these components mature, manufacturing constraints—particularly gear hobbing stability—remain challenging. The non-uniform pitch curve curvature induces significant cutting force fluctuations during gear hobbing, causing vibration, tool wear, and dimensional inaccuracies. We establish a predictive framework linking… Read more: Study on Cutting Force Fluctuation Characteristics and Suppression in Non-Circular Gear Hobbing

This paper presents an innovative approach for designing high-order non-circular helical gears by combining conversion method of tooth profile with intersection curves from involute helicoid surfaces. The methodology addresses inherent challenges in traditional spiral line projection while maintaining computational efficiency for practical engineering applications. 1. Fundamental Theory of Non-Circular Gearing 1.1 Pitch Curve Parameterization The… Read more: High-Order Non-Circular Helical Gear Design Based on Conversion Method of Tooth Profile

This study addresses the challenges in controlling meshing quality for high reduction hypoid gears (HRH) through advanced surface synthesis and modification techniques. A comprehensive mathematical framework is developed to optimize tooth contact patterns and dynamic performance. 1. Spatial Meshing Equation and Coordinate Transformation The general meshing equation for crossed-axis gear transmission is established as: $$f(u,… Read more: Surface Synthesis-Based Machining Parameter Calculation and Contact Simulation for High Reduction Hypoid Gears

In modern wind turbine gearboxes, the use of helical gears is prevalent due to their superior load distribution and smooth operation compared to spur gears. However, the inherent design of helical gears introduces axial forces during meshing, which can generate significant bending moments. These moments often lead to misalignment between planetary gears and their supporting… Read more: Impact of Helical Gears Meshing Bending Moment on Transient Lubrication Performance in Wind Turbine Planetary Gear Journal Bearings

Abstract: The processing principles of arc tooth bevel gears, the necessary movements of the machine tool, and designs the transmission schematic diagram of the machine tool. It adopts a three-axis CNC system for control, combining the advantages of mechanical transmission and CNC system control. This avoids the problems of complex machine tool structure, numerous adjustment… Read more: Research and Manufacture of the CNC Arc Tooth Gear Milling and Grinding Machine

In the field of mechanical engineering, planetary gear systems have garnered significant attention due to their compact design, high torque density, and efficient power transmission. Among various configurations, the linear conjugate planetary gear transmission with small tooth difference stands out for its potential to enhance performance in reducers and other applications. This study focuses on… Read more: Simulation and Experimental Research on Linear Conjugate Planetary Gear Transmission with Small Tooth Difference

Abstract: The radial dressing method with a single variable center distance can lead to gradual changes in the tooth profile of the worked piece after honing with an internal gear honing tool. Based on the conjugate meshing relationship between the internal gear honing tool and the workpiece during processing, this paper analyzes the reasons for changes… Read more: Internal Gear Honing Tool Dressing Method with Floating Axis Angle

In the modern automotive industry, bevel gears play a critical role in the drive axle systems, transmitting power efficiently between non-parallel shafts. Among these, spiral bevel gears, including those conforming to the Gleason and Oerlikon systems, are widely used due to their ability to handle high loads and provide smooth operation. As a key component,… Read more: Manufacturing Technology and Trends for Automotive Drive Axle Bevel Gears

In modern industrial applications, helical gears are widely used due to their high overlap ratio, excellent meshing performance, and low vibration and noise. They are critical components in sectors such as petroleum, chemical, energy, and automotive industries. However, in high-speed and heavy-duty scenarios, the fatigue life assessment of helical gears remains a challenging issue. Fatigue… Read more: Research on Fatigue Life and Node Displacement Modification for Helical Gears

Precision in gear shaping directly depends on the accuracy of gear shaping cutters, making efficient grinding technology essential. This study addresses two core aspects: automatic tool setting during grinding wheel dressing using acoustic emission (AE) technology, and optimization of grinding wheel alignment during gear shaping cutter machining by integrating pitch deviation and tooth surface topology.… Read more: Research on Automatic Tool Setting Technology of Special CNC Grinding Machine for Gear Shaping Cutter

In modern manufacturing, the demand for high-precision and efficient machining of spiral bevel gears has driven the need for advanced machine tool structures. The column, as a critical component supporting the machining process, significantly influences the overall stability, accuracy, and longevity of spiral bevel gear production equipment. This study investigates the static and dynamic performance… Read more: Static and Dynamic Analysis of CNC Spiral Bevel Gear Machine Tool Column Based on ANSYS Workbench

In the field of gear design, non-circular helical gears offer significant advantages, including smooth transmission, high overlap ratios, and enhanced load-bearing capacity. However, the curvature variations along the pitch curve of non-circular gears pose challenges in achieving uniform tooth alignment when using traditional methods. This article presents a novel approach to designing high-order non-circular helical… Read more: Design of High-Order Non-Circular Helical Gears

This study proposes a novel approach for machining spiral bevel gears on universal 5-axis CNC machines using flat-bottom milling cutters, addressing the limitations of specialized equipment in cost and flexibility. The methodology combines gear meshing theory with envelope machining principles to achieve high-precision tooth surface generation. 1. Mathematical Modeling of Spiral Bevel Gear Tooth Surface… Read more: Trajectory Planning of Spiral Bevel Gear Tooth Surface Machining Using Flat-Bottom Milling Cutters

Spindle finishing is a critical process for enhancing the surface integrity of cylindrical gears, particularly in achieving isotropic surface textures and improved fatigue resistance. This study investigates the granular interaction mechanisms at the gear-to-abrasive particle interface using Discrete Element Method (DEM) simulations. By analyzing velocity fields, contact forces, and parametric dependencies, we establish a framework… Read more: Particle Dynamics in Spindle Finishing of Cylindrical Gears: A DEM-Based Investigation

Spiral bevel gears are extensively employed in aviation transmission systems due to their exceptional load capacity, smooth operation, and noise reduction properties. The fatigue performance of these critical components is directly influenced by residual stresses induced during gear milling processes. This study establishes a comprehensive finite element model to quantify how milling parameters affect residual… Read more: Residual Stress Analysis in Aviation Spiral Bevel Gear Milling

This study presents an efficient modeling methodology for worm gears using CATIA software and validates its accuracy through finite element analysis (FEA) and multi-body dynamics simulations. The proposed approach addresses challenges in achieving precise meshing characteristics for specialized industrial applications. 1. Geometric Modeling Methodology The modeling process begins with parameter definition based on the ZI-type… Read more: Precise Modeling and Dynamic Analysis of Worm Gears Based on CATIA

In my experience with automotive engineering, the issue of friction noise in worm gear systems within Electric Power Steering (EPS) has been a persistent challenge that significantly impacts vehicle Noise, Vibration, and Harshness (NVH) performance. As EPS systems become more prevalent due to their energy efficiency and superior handling compared to hydraulic systems, addressing worm… Read more: Worm Gear Friction Noise in Electric Power Steering Systems

In the development of electric power steering systems, particularly column-type systems, friction noise arising from worm gears presents a significant challenge to vehicle NVH performance. As an engineer involved in this field, I have observed that these noises can severely impact driving comfort, especially during low-speed maneuvers or in varying temperature conditions. This article delves… Read more: Research on Friction Noise in Worm Gears of Electric Power Steering Systems

In mechanical transmission systems, helical gears are widely used due to their high load capacity and smooth operation. However, at high speeds, windage power loss becomes a significant factor affecting overall efficiency. This study focuses on analyzing and optimizing windage power loss in high-speed helical gear pairs using computational fluid dynamics (CFD). The objective is… Read more: Analysis and Optimization of Windage Power Loss in High-Speed Helical Gear Pairs

Introduction Spiral bevel gear is critical components in mechanical transmission systems due to their high load-bearing capacity, smooth operation, and low noise. Traditional machining methods, such as cutting, compromise material utilization and disrupt the integrity of metal flow lines. Rolling forming, a near-net-shape process, offers advantages like improved material efficiency, enhanced mechanical properties, and reduced… Read more: Optimization of Near Net Forming Process and Metal Flow Line Evolution in Spiral Bevel Gear Rolling

Abstract Gear hobbing is a crucial manufacturing process in the production of various mechanical components. The optimization of process parameters in CNC gear hobbing is challenging due to the numerous and intricately coupled parameters. This paper proposes a multi-objective optimization method for CNC gear hobbing process parameters, aiming to minimize energy consumption, processing time, and… Read more: Multi-Objective Optimization Method for CNC Gear Hobbing Process Parameters

Gear mechanisms are ubiquitous in mechanical systems, yet reconstructing high-precision digital models from physical components remains challenging. This research establishes a novel reverse engineering methodology for gear reconstruction through integrated Imageware-Pro/E workflows. By prioritizing surface reconstruction over conventional parametric modeling, we achieve sub-10μm accuracy in reverse gear replication—critical for heavy-duty applications like planetary transmissions. 1.… Read more: Reverse Gear Reconstruction via Imageware and Pro/E Integration

This research investigates profile and lead modifications for spur gears operating under low-speed and heavy-load conditions, focusing on improving meshing stability and load-bearing capacity. The study combines theoretical analysis, quasi-static simulations, transient dynamics, and scaled model validation to optimize modification parameters for enhanced gear performance. Theoretical Framework for Spur Gear Modification Profile Modification Principles: The… Read more: Study on Modification of Low-Speed and Heavy-Duty Spur Gears

In mechanical transmission systems, helical gears are widely used due to their smooth operation and high load capacity. However, friction between tooth surfaces significantly influences vibration, noise, and efficiency. This study focuses on analyzing the time-varying friction excitation in helical gears and its impact on meshing efficiency. We derive analytical methods for calculating friction forces… Read more: Study on Time-varying Friction Excitation and Meshing Efficiency of Helical Gears

In modern agricultural machinery, transmissions play a critical role in ensuring efficient power delivery under varying load conditions. Traditional tractor transmissions often rely on fixed-axis gear systems, which, while simple and cost-effective, suffer from limitations such as large physical size, limited gear ratios, and high operator fatigue due to complex shifting mechanisms. To address these… Read more: Design of a Novel Multi-Speed Transmission Based on Face Planetary Gear Train

Abstract Aiming at the current problems of low gear shaping efficiency and large cutting force fluctuations in non-circular gears, and based on the gear shaping cutting force modeling and the relationship established between the cutting force and the cutting area, this article proposes a circular feed rate optimization method based on constant cutting force constraint.… Read more: Non-circular Gear Shaping Technology based on Constant Cutting Force Constraint

In the field of mechanical transmission systems, bevel gears play a critical role in transferring motion and power between intersecting shafts, typically at a 90-degree angle. These components are widely used in automotive differentials, agricultural machinery, and machine tools due to their efficiency and reliability. However, the straight-tooth design of bevel gears makes them sensitive… Read more: Precision Modeling and Contact Analysis for Bevel Gears

This study investigates a data-driven approach to optimize the fatigue life of helical gears through dynamic simulation-guided modification strategies. By integrating multi-domain simulations and advanced clustering algorithms, a novel node displacement modification method is developed to enhance load distribution and operational reliability in high-speed gear transmission systems. Dynamic Simulation and Load Spectrum Generation The helical… Read more: Fatigue Life Analysis and Node Displacement Modification Strategy for High-Performance Helical Gears

In aviation transmission systems, spiral bevel gears play a critical role in achieving directional changes and power transmission due to their smooth operation, high load capacity, low noise, and compact structure. However, under high-speed and heavy-load conditions, spiral bevel gears are susceptible to traveling wave resonance, which can exacerbate wear on gear contact surfaces and… Read more: Study on Traveling Wave Resonance Characteristics of Aviation High-Speed Spiral Bevel Gears

Helical gears are widely recognized for their superior load-bearing capacity, smooth operation, and high transmission efficiency, making them ideal for high-speed and heavy-duty applications. However, issues such as excessive contact stress and fatigue on tooth surfaces are common causes of gear failure. In this study, I focus on modeling and simulating the transient meshing behavior… Read more: Transient Meshing Simulation of Helical Gears

Introduction Gear honing is a precision finishing process for hardened gears, where residual stress significantly impacts fatigue strength, dimensional stability, and wear resistance. Internal gear honing involves complex interactions between the honing wheel and workpiece, generating elastic-plastic deformation that induces residual stress. Current research gaps exist in quantifying how honing parameters influence residual stress distributions.… Read more: Research on Residual Stress in Internal Gear Honing Workpiece Surfaces

Abstract:The gear shaving cutting parameters optimization method based on genetic algorithm for green manufacturing. Due to the irrationality of traditional gear shaving cutting parameters in machine tools, which leads to high energy consumption during production, this method aims to minimize energy consumption by selecting the spindle speed, feed rate, and other relevant parameters as optimization… Read more: Gear Shaving Cutting Parameters Optimization Method Based on Genetic Algorithm for Green Manufacturing

In modern urban infrastructure, elevators play a critical role in vertical transportation, and their operational safety is paramount. As an integral component of elevator systems, the worm gear mechanism within the reduction box of asynchronous machines is subjected to significant stress and wear during operation. Traditional inspection methods, such as noise and vibration analysis, often… Read more: Wear Analysis of Worm Gears in Elevator Reduction Boxes Using Oil Monitoring Technology

Gear meshing transmission is prevalent in mechanical systems, and ensuring long-term smooth engagement requires strict adherence to design parameters. This necessitates continuous monitoring of dimensional deviations during manufacturing. In automotive transmission gear production, the sequence typically involves rough turning, finish turning, gear hobbing, chamfering, gear shaving, heat treatment, shot blasting, and gear honing, with some… Read more: Gear Shaving Process Quality Control Using Minitab

In the field of advanced mechanical transmissions, the design and analysis of non-orthogonal asymmetric helical face gears have garnered significant attention due to their unique geometric properties and applications in high-precision equipment. These gears feature variable shaft angles and differing pressure angles on both sides of the tooth, which enhance their adaptability and performance in… Read more: Design and Meshing Stiffness Calculation of Non-Orthogonal Asymmetric Helical Face Gears

In modern aviation applications, the demand for high-speed and heavy-duty gear transmissions has intensified, with helical gears playing a critical role due to their superior load distribution and smoother operation compared to spur gears. As a key component in aero engines and gearboxes, the performance of helical gears directly impacts the reliability and efficiency of… Read more: Comprehensive Analysis of Helical Gears Modification Design for Aero Gearboxes Using KISSsoft

This paper presents a systematic methodology for detecting transmission errors in double circular arc spiral bevel gears, combining theoretical modeling with advanced coordinate transformation techniques. The study focuses on solving the complex nonlinear interactions between tooth profile deviations and elastic deformations that cause edge contact phenomena and coordinate system distortion. 1. Mathematical Modeling of Spiral… Read more: High-Precision Detection of Transmission Errors in Double Circular Arc Spiral Bevel Gears

Hypoid gears are widely used in automotive and industrial applications due to their high load capacity and compact design. This paper presents a comprehensive methodology for digital modeling and time-varying meshing analysis of hypoid gears manufactured through the Hyperbolic Face Hobbing (HFT) method. 1. Kinematic Modeling of Hypoid Gear Generation The mathematical model of hypoid… Read more: Digital Modeling and Time-Varying Meshing Features Analysis of Hypoid Gears

This paper presents an efficient chamfering method for cylindrical gears using rotational indexing machining. By combining kinematic analysis with cutting-edge tool design principles, we establish a systematic approach to achieve high-precision edge rounding on gear end faces. 1. Mathematical Model of End Face Profile The end face profile of involute cylindrical gears consists of left/right… Read more: Research on Chamfering Method of Cylindrical Gear Tooth Profile Based on Rotational Indexing Machining

In mechanical transmission systems, helical gears are widely used due to their smooth operation and high load capacity. However, issues such as load fluctuations in the tooth engagement region and uneven contact along the tooth width can lead to system vibration and noise. Tooth profile modification and lead crowning are effective methods to mitigate these… Read more: Nonlinear Excitation and Dynamic Characteristics of Helical Gear Systems Considering Modification

Abstract: Honing has emerged as a pivotal method for gear finishing. Delving into gear honing mechanism and accurately grasping the influence of factors such as honing speed and abrasive particle size on tooth surface roughness is crucial for enhancing the surface quality of machined gears. This paper analyzes the characteristics of internal gear power honing,… Read more: Prediction of Surface Roughness of Workpiece for Internal Gearing Power Honing Process and Variation Analysis

Hypoid gears are widely used in various industrial applications, including industrial robots, automotive systems, and aerospace, due to their high overlap ratio, strong tolerance capacity, stable meshing, and offset installation capabilities. However, installation errors during assembly can lead to poor contact characteristics, reduced transmission efficiency, increased wear, and shorter lifespan. To address these issues, we… Read more: Optimization Design of Hypoid Gear Tooth Flank for Low Installation Error Sensitivity

Helical gears are widely used in mechanical transmission systems due to their smooth operation and high load capacity. The time-varying meshing stiffness (TVMS) is a critical parameter that significantly influences the dynamic behavior, vibration, and noise of gear systems. Accurately calculating TVMS is essential for optimizing gear design and reducing unwanted dynamics. In this study,… Read more: Improved Algorithm for Time-Varying Meshing Stiffness of Helical Gears and Analysis of Influencing Factors

Abstract: As a special equipment for machining spiral bevel gears, the spiral bevel gear milling machine is prone to jamming issues due to backlash during the CNC machining process, leading to impact and vibration phenomena, which reduce gear machining accuracy. This paper compares anti-backlash technologies and constructs a double-motor anti-backlash method for the transmission system of… Read more: Anti-backlash Technology of Double Motors of CNC Spiral Bevel Gear Milling Machine

In this study, I investigate the meshing characteristics of spiral bevel gears under various installation errors, focusing on the deviations in tooth surfaces that arise during machining. The spiral bevel gear is a critical component in many mechanical transmission systems due to its ability to transmit power between non-parallel shafts efficiently. However, the performance of… Read more: Mathematical Modeling of Spiral Bevel Gear Meshing with Installation Errors

In gear transmission systems, time-varying meshing stiffness (TVMS) is a critical parameter influencing dynamic performance, vibration characteristics, and fault diagnosis accuracy. This paper presents an enhanced analytical approach for calculating the TVMS of spur gears by modifying the traditional Ishikawa formula, incorporating gear body deformation effects through trapezoidal simplification. 1. Enhanced Ishikawa Method with Body… Read more: Calculation and Analysis of Time-Varying Meshing Stiffness for Spur Gears Using an Improved Ishikawa Method

Friction-induced noise in worm gear mechanisms remains a critical challenge for Electric Power Steering (EPS) systems. This article systematically analyzes noise generation mechanisms and proposes optimization strategies through dimensional control, material selection, lubrication engineering, and assembly process improvements. 1. Fundamental Analysis of Worm Gear Noise The stick-slip phenomenon in worm gear pairs is mathematically described… Read more: Worm Gear Friction Noise Control in Electric Power Steering Systems

Equal-height spiral bevel gears demonstrate superior performance characteristics including high transmission efficiency, strong load-bearing capacity, smooth operation, and minimal noise generation. These advantages make them indispensable in automotive, aerospace, and aviation applications. Traditional manufacturing of these gears requires extensive trial cutting, which consumes significant time and resources. Our research establishes a comprehensive methodology for simulating… Read more: Equal-Height Spiral Bevel Gear Cutting Simulation and Optimization

The contact characteristics of spiral bevel gears critically influence their transmission efficiency, load capacity, and operational stability. This study investigates the meshing behavior of double circular-arc spiral bevel gears under nutation drive conditions through finite element analysis (FEA). Key parameters such as contact stress distribution, load-sharing ratio, and meshing patterns under varying loads and installation… Read more: Contact Characteristic Analysis of Double Circular-Arc Spiral Bevel Gears in Nutation Drive Using Finite Element Method

This study investigates power loss mechanisms in helical gear transmissions for pure electric vehicle reducers using Amesim simulation software. A comprehensive model is developed to analyze energy dissipation during gear operation, focusing on meshing friction, oil churning, and bearing losses. 1. Theoretical Framework for Helical Gear Power Loss The total power loss (Ptotal) in helical… Read more: Simulation and Analysis on Power Loss of Helical Gears Based on Amesim

In modern mechanical transmission systems, helical gears play a critical role due to their ability to provide smooth and efficient power transfer. However, the increasing demands for high-performance gear systems in advanced equipment necessitate superior accuracy in gear manufacturing. One common technique to enhance gear performance is tooth profile modification, which aims to optimize load… Read more: Research on Compensation of Tooth Profile Modification Error in Internal Helical Gears Based on CNC Form Grinding Machine