In my analysis of worm gears for new energy vehicle transmissions, I have focused on the ZN type worm gear system, which plays a critical role in reducing speed and increasing torque for functions like gear selection and clutch control. Compared to traditional automotive transmissions, these worm gears offer compact design, high transmission ratios, and… Read more: Analysis of Manufacturing Process for ZN Type Worm Gears in New Energy Vehicles

This study investigates the tribological behavior and power transmission performance of cylindrical gears with variable hyperbolic circular-arc-tooth-trace (VH-CATT) under mixed lubrication conditions. A comprehensive model integrating contact mechanics, lubrication theory, and surface topography analysis is established to reveal the complex interaction between gear geometry, operating parameters, and lubrication states. 1. Contact Characteristics of VH-CATT Cylindrical… Read more: Analysis of Friction Characteristics and Transmission Efficiency of Cylindrical Gear with Variable Hyperbolic Circular-Arc-Tooth-Trace under Mixed Lubrication

The surface quality of spiral bevel gears critically influences their meshing performance, vibration characteristics, and load-bearing capacity. This study investigates the barrel finishing process for aviation-grade spiral bevel gears through theoretical modeling, discrete element simulations, and experimental validation. A parallel spindle-type finishing method is analyzed to optimize surface roughness reduction and achieve isotropic surface morphology.… Read more: Simulation and Experimental Study of Spiral Bevel Gear Finishing Using Discrete Element Method

As an essential component in mechanical transmission systems, internal gears play a critical role in various high-precision industries, including aerospace and defense. The demand for high-quality internal gears from internal gear manufacturers has driven the development of advanced forming techniques to enhance mechanical properties and production efficiency. Traditional machining methods, such as cutting, often compromise… Read more: Research on Precision Forming Process of Spur Internal Gears Based on Solidworks

In mechanical transmission systems, helical gears are widely used due to their high load capacity, smooth operation, and reduced noise compared to spur gears. However, the meshing performance of helical gears can be significantly affected by factors such as shaft deformation, which is often overlooked in traditional analyses. This study focuses on optimizing the meshing… Read more: Optimal Design of Meshing Contact for Helical Gears in Cutting Reducers

In mechanical transmission systems, straight bevel gears are widely used due to their ability to transmit motion and power between intersecting shafts. However, the presence of nonlinear factors such as backlash and time-varying mesh stiffness can lead to complex dynamic behaviors, including amplitude jumps, multi-valued solutions, and tooth surface impacts. These phenomena significantly affect the… Read more: Dynamic Characteristics and Solution Domain Structure of Straight Bevel Gear Systems

Gears are fundamental components for transmitting motion and torque in mechanical systems. The evolution of spiral bevel gear manufacturing has been revolutionized by CNC gear machining techniques, significantly enhancing production efficiency and quality. These complex gears, characterized by their curved teeth and conical geometry, enable precise power transmission between intersecting axes. Their high load capacity,… Read more: Advanced CNC Machining Processes for Spiral Bevel Gears

This study presents a vibration reduction optimization method for hypoid gears based on Ease-off flank modification. The method integrates tooth contact analysis (TCA), loaded tooth contact analysis (LTCA), and dynamic modeling to achieve minimized vibration through systematic parameter optimization. 1. Ease-Off Modification Design The Ease-off surface for pinion modification combines transmission error control and parabolic… Read more: Vibration Reduction Optimization of Hypoid Gears with Ease-Off Flank Modification

In the mining industry, shuttle cars are critical for material transport, and their performance heavily relies on the efficiency and durability of the worm gear reducer. As a key component, the worm gear reducer offers advantages such as compact size, high transmission ratio, and smooth operation. However, in domestic applications, we have observed persistent issues… Read more: Fault Analysis and Improvement of Worm Gear Reducer for Mining Applications

In the field of gear transmission systems, internal gear pairs play a critical role in various industrial applications due to their compact design and high power density. As an internal gear manufacturer, we constantly seek to optimize tooth profiles to enhance performance, durability, and efficiency. One promising approach involves replacing the conjugate external gear tooth… Read more: Analysis of Meshing Efficiency in Internal Gear Pairs with Rectilinear-Arc Tooth Profile

Abstract The research of fully numerical control vertical gear milling machines, particularly on the coordinate control method and software development for spiral bevel gear cutting and measurement. By integrating online measurement functions and tooth profile error adjustment, this study aims to provide support for the closed-loop production mode of bevel gears in China. 1. Introduction… Read more: Coordinate Control Method and Software Development for Fully Numerical Control Vertical Gear Milling Machine

In recent years, computer-aided design (CAD) for gear transmissions has advanced significantly worldwide. However, research on CAD for spiral bevel gears and zero bevel gears remains limited. I have conducted an in-depth study on the computer-aided design of these gear types, focusing on optimization design, data management, and automated parametric drawing of gear part diagrams.… Read more: Computer-Aided Design of Spiral Bevel Gears and Zero Bevel Gears

In modern underground engineering, shield machines play an increasingly critical role, and the reducer, as a core component, directly influences the performance and safety of these machines. Among the reducer’s elements, multi-stage planet gears are vital, and their wear state significantly impacts the reducer’s efficiency and lifespan. Detecting the wear state of these planet gears… Read more: Wear State Detection of Multi-Stage Planet Gears in Shield Machine Reducers

1. Fundamental Requirements for Spur Gear Transmission Spur gears are critical components in mechanical systems due to their ability to transmit motion and power efficiently. The tooth thickness at any point on the gear profile directly affects load distribution, bending strength, and manufacturing precision. This article systematically derives the formulas for calculating tooth thickness at… Read more: Calculation of Tooth Thickness at Any Point K on Standard Spur Gears

In mechanical transmission systems, the straight bevel gear is widely used due to its ability to transmit power between intersecting shafts. However, nonlinear factors such as backlash, time-varying stiffness, and support clearances can induce chaotic vibrations, which adversely affect system performance and reliability. This study focuses on controlling chaotic motion in a 7-degree-of-freedom straight bevel… Read more: Chaotic Control of Straight Bevel Gear System Based on Improved PSO Optimization Fuzzy Neural Network

In modern mechanical transmission systems, helical gears are widely used due to their high load capacity and smooth operation. However, at high rotational speeds, windage power loss becomes a significant factor affecting transmission efficiency. This study focuses on analyzing the windage power loss of high-speed helical gears under various operating conditions and optimizing the design… Read more: Analysis and Optimization of Windage Power Loss in High-Speed Helical Gears

Helical gears play a critical role in power transmission systems due to their superior load-bearing capacity and smooth engagement characteristics. This study investigates how profile shift modifications affect time-varying mesh stiffness (TVMS) and dynamic responses in helical gear systems through analytical modeling and dynamic simulations. 1. Modified Helical Gear Geometry The geometric relationships of profile-shifted… Read more: Dynamic Characteristics Analysis of Helical Gear Systems Under Profile Shift Modification

In the manufacturing of bevel gears, the precision of component assembly is critical for ensuring the overall performance and reliability of gear systems. The spindle cutter head unit in a bevel gear milling machine is a key assembly where errors in part machining accumulate during assembly, directly impacting the accuracy of gear tooth profiles. This… Read more: Modeling and Optimization of Assembly Errors in Bevel Gear Milling Machine Spindle Cutter Head Components

As an engineer and researcher in the field of mechanical design and simulation, I have always been fascinated by the complexities of gear systems, particularly internal gears. Internal gears are crucial components in various mechanical transmissions, such as planetary gear systems, where they provide compact and efficient power transmission. However, the manufacturing and simulation of… Read more: Involute Internal Gear Generating Simulation

In the field of mechanical engineering, the performance of transmission systems, particularly in automotive applications, heavily relies on the efficiency and durability of gear components. Straight bevel gears play a critical role in such systems, facilitating power transmission and torque distribution. However, issues like noise, vibration, and premature wear often arise due to imperfections in… Read more: Optimization Analysis of Multi-Objective Regression Equation for Helical Modification of Straight Bevel Gears

In the field of mechanical engineering, helical gears are widely used due to their superior meshing performance, high load-carrying capacity, and smooth operation. However, when it comes to angular modified helical gears, the strength calculation and verification processes become exceptionally complex. Traditional methods rely on manual calculations based on standards like GB/T 3480 and GB/T… Read more: Modeling and Strength Analysis of Angular Modified Helical Gears Using Creo

Shearer gears operate under extreme conditions in underground coal mining. During final inspection of disk-shaped gears for an EC710 shearer (rated capacity: 528 t/h), surface grinding cracks were detected. Given the severe economic impact of in-mine repairs, comprehensive failure analysis was performed on the affected batch. Failure Background Cracks measuring 4–8 mm appeared at tooth… Read more: Failure Analysis of Grinding Cracks in Shearer Gears

In this study, we focus on the critical transmission component of spiral bevel gears, which are widely used in high-power and extreme service conditions due to their excellent torque transmission capacity, high contact ratio, smooth operation, compact structure, and low noise. However, under high-speed and heavy-load conditions, spiral bevel gears are prone to crack faults,… Read more: Analytical Calculation of Time-Varying Meshing Stiffness for Cracked Spiral Bevel Gears Based on Meshing Theory

Abstract The gear hobbing process of a conjugate pinion for a ruled surface face gear. The conjugate pinion and its manufacturing method are proposed to address the limitation of conjugate relationship between the ruled surface face gear and cylindrical gear, particularly in applications with small transmission ratios. The deviation morphology of the conjugate pinion’s tooth… Read more: Gear Hobbing of Conjugate Pinion for Ruled Surface Face Gear

In modern manufacturing, precision forging of straight bevel gears offers significant advantages, including enhanced mechanical properties, high material utilization, and reduced environmental impact. However, ensuring the quality of these gears poses challenges, particularly in detecting defects and dimensional inaccuracies during production. Traditional methods, such as contact-based measurements on coordinate measuring machines, are slow, cannot handle… Read more: Online Detection System for Precision Forged Straight Bevel Gears

As an internal gear manufacturer, we constantly strive to improve the design and performance of internal gears used in various industrial applications, particularly in planetary gear systems. These systems are renowned for their compact structure, high transmission ratio, and low vibration noise. Accurate calculation of mesh stiffness is crucial for strength analysis and dynamic characteristic… Read more: Advanced Method for Calculating Mesh Stiffness in Internal Gears

In modern mechanical engineering, worm gear drives are widely employed in various applications due to their compact structure, high transmission ratios, and smooth operation. As a key component in reducers for industrial equipment such as mining valve actuators, the design and analysis of worm gears require precise modeling to ensure performance and durability. Traditional methods,… Read more: Research and Application of a Worm Gear Modeling Method Based on CATIA

This paper proposes an integrated approach combining parametric modeling and multi-objective optimization to enhance the performance of spiral bevel gears. The methodology addresses critical challenges including excessive transmission error, elevated contact temperature, and high Hertzian stress through systematic parameter optimization. 1. Parametric Modeling Framework The geometric parameters of spiral bevel gears are calculated using fundamental… Read more: Parametric Modeling and Multi-Objective Optimization of Spiral Bevel Gears Based on NSGA-II Algorithm

In my experience with industrial machinery, I have found that worm gear reducers are critical components in applications requiring low speed and high torque, such as conveyor systems, lifting equipment, and mixers. These devices utilize a worm and worm wheel mechanism to achieve significant speed reduction and torque multiplication. However, like any mechanical system, they… Read more: Worm Gear Reducer Fault Analysis and Maintenance

In modern mechanical transmissions, helical gears are widely used in high-speed and heavy-duty applications due to their superior load-carrying capacity and smooth operation. However, under such conditions, the friction-induced heat generation can lead to elevated thermal loads, potentially causing tooth surface scuffing and failure. Understanding the flash temperature distribution on the tooth surface of helical… Read more: A Study on Flash Temperature Distribution of Helical Gear Tooth Surface Based on MATLAB Numerical Calculation

During quality inspection of a large-scale forged gear blank, catastrophic cracking was observed following quenching and tempering heat treatment. The forged gear blank measured 2100 mm in diameter, weighed 6000 kg, and was manufactured from ZG35CrMo alloy steel. The production sequence involved casting, rough machining, and heat treatment according to the following protocol: furnace loading… Read more: Failure Analysis of Fractured Forged Gear Blank in ZG35CrMo Steel

In the field of gear manufacturing, internal gears with varying tooth thickness, known as beveloid gears, present significant challenges for high-precision machining. As an internal gear manufacturer, I have encountered numerous difficulties in achieving the tight tolerances required for applications such as precision reducers, where minimal backlash is critical. Traditional methods using standard shaper cutters… Read more: Precision Design of Shaper Cutters for Internal Beveloid Gears

As an engineer specializing in fluid power systems, I have always been fascinated by the efficiency and reliability of internal gear pumps. These pumps, which utilize internal gears, are widely recognized for their high performance, low noise, and superior self-priming capabilities. They play a crucial role in hydraulic transmission systems, especially when handling viscous or… Read more: Accurate Calculation of Displacement in Internal Gear Pumps: A Comprehensive Analysis

In recent years, micro-mechanical systems, particularly micro-electromechanical systems (MEMS), have seen significant advancements, with micro-internal gears playing a critical role in components like planetary gear reducers. As an internal gear manufacturer, we recognize the importance of precision in producing internal gears for such applications. Bulk metallic glasses (BMGs), specifically Zr-based alloys like Zr55Al10Ni5Cu30, offer exceptional… Read more: Backward Extrusion Process and Die Design for Micro-Internal Gears of Zr-Based Bulk Metallic Glasses

In modern industrial applications, internal gears play a critical role in transmission systems for sectors such as wind energy and electric vehicles, where high precision and efficiency are paramount. As an internal gear manufacturer, optimizing the broaching process is essential to meet the growing demand for high-quality internal gears. Broaching offers significant advantages over other… Read more: Modeling of Cutting Force in Broaching of Internal Gear Based on Zorev Stress at Tool-chip Interface

As a researcher in mechanical engineering, I have extensively studied the effects of errors on the contact points in beveloid internal gear enveloping crown worm drives. This type of drive is a novel worm transmission system composed of a beveloid internal gear and a crown worm enveloped by the internal gear surface. The unique design,… Read more: Error Analysis of Contact Points in Beveloid Internal Gear Enveloping Crown Worm Drive

As an internal gear manufacturer, we frequently encounter challenges in designing and processing non-standard tooth profiles, particularly with tool interference during the shaping process. This interference, often referred to as tool retraction interference, can lead to reduced tool life, poor surface finish, and even damage to the workpiece. To address this, we have developed a… Read more: Development of Internal Gear Shaping Simulation System

As an engineer focused on precision mechanical systems, I have extensively studied the design and optimization of planetary reducers, particularly those with small tooth difference characteristics. These systems are renowned for their compact structure, high reduction ratios, small volume, and superior transmission accuracy, making them ideal for applications requiring efficient power transmission in constrained spaces.… Read more: Parametric Modeling of Internal Gear Pairs in Planetary Reducers with Small Tooth Difference

Internal gear pumps, particularly crescent internal gear pumps, are widely used in hydraulic systems due to their compact design, high efficiency, and reliability. As an internal gear manufacturer, we focus on optimizing these components for various applications. In this study, we analyze the cavitation flow field in crescent internal gear pumps under varying operating conditions.… Read more: Simulation Analysis of Cavitation Flow Field in Crescent Internal Gear Pumps

As an engineer specializing in mechanical systems, I have extensively studied the failure mechanisms of internal gears in rotary drilling rigs. The power transmission system, particularly the internal gear shafts, is critical for operational efficiency and durability. In this analysis, I focus on the fracture issues observed in internal gears, drawing from material science and… Read more: Analysis and Improvement of Internal Gear Shaft Fracture in Rotary Drilling Rigs

In hydraulic systems, the performance of hydraulic pumps is critical for stability and reliability. Internal gear pumps, known for their compact structure, self-priming capability, and contamination resistance, are widely used in various industries. As an internal gear manufacturer, we focus on optimizing these components, particularly straight line conjugate internal gears, which feature a straight-tooth external… Read more: Influence of Oil Properties on Flow Characteristics of Straight Line Conjugate Internal Gear Pumps

As an internal gear manufacturer, I have observed the expanding applications of internal gear pumps in industrial systems, driven by the need for higher efficiency and reduced operational noise. Internal gears play a critical role in these pumps, and understanding their noise generation mechanisms is essential for improving performance and longevity. In this article, I… Read more: Noise Control in Internal Gear Pumps

As an experienced internal gear manufacturer, we frequently encounter challenges related to the minor deformations and surface imperfections that arise in internal gears after heat treatment. These issues can significantly impact the performance, durability, and noise levels of gear systems in various applications, such as automotive transmissions and industrial machinery. To address these problems, we… Read more: Internal Gear Honing Methods

As an internal gear manufacturer, we often face challenges in achieving high-precision finishing for internal gears, particularly after heat treatment processes like high-frequency quenching or nitriding. Traditional methods such as gear shaping followed by thermal operations introduce limitations due to inherent accuracy issues and deformation. While external grinding or electrical discharge machining have been explored,… Read more: Design of Vibration Abrasive Machine for Internal Gear Pair

As an internal gear manufacturer, we often encounter challenges in maintaining gear accuracy after heat treatment. Internal gears are critical components in various heavy-duty applications such as wind turbines, drilling platforms, and planetary gear systems. The precision of these internal gears directly impacts the performance and longevity of the entire mechanical system. In this study,… Read more: Research on Pre-Quenching Precision Machining of Internal Gears Based on Common Normal Line Compensation

As an engineer specializing in gear manufacturing, I have extensively studied the challenges and solutions in producing high-quality internal gears. Internal gear transmission offers significant advantages, including compact radial dimensions, efficient motion synthesis and decomposition, high transmission ratios, and enhanced load-bearing capacity. These benefits make internal gears indispensable in various mechanical systems, such as automotive… Read more: Stable Feed Conditions in Internal Gear Manufacturing

In the field of hydraulic systems, internal gear pumps play a critical role as compact and efficient power sources. As an engineer specializing in fluid power transmission, I have extensively studied the dynamic behavior of internal gears within these pumps. The radial micro-motion of internal gears, influenced by fluid film effects, is a key factor… Read more: Radial Micro-Motion Analysis of Internal Gears in Gear Pumps

In modern industrial applications, internal gears are critical components in heavy-duty machinery such as tunnel boring machines, where they operate under high torque and low-speed conditions. The reliability and longevity of these systems depend heavily on the lubrication state of the gear teeth. As an internal gear manufacturer, we recognize that unmodified gear profiles often… Read more: Influence of Walker Curve Tooth Root Modification on Thermoelastic Grease Lubrication Characteristics of Large Internal Gears

As an engineer specializing in gear design and analysis, I have extensively studied the dynamic behavior of high-contact-ratio cycloid internal gear pairs. These gear systems are critical in applications requiring high precision and load capacity, such as those supplied by reputable internal gear manufacturers. The unique tooth profile of cycloid gears, characterized by epicycloid and… Read more: Analysis of Time-Varying Mesh Stiffness and Load Distribution in High-Contact-Ratio Cycloid Internal Gears

As a leading internal gear manufacturer, we have dedicated significant efforts to advancing the grinding processes for internal gears, which are critical components in high-precision mechanical transmissions. The demand for efficient and accurate internal gears has grown exponentially in industries such as automotive, aerospace, and robotics, where internal gears play a pivotal role in compact… Read more: Precision Grinding of Internal Gears: Calculations and Process Optimization

In the field of precision mechanical transmissions, internal gear drives play a critical role in applications requiring high torque density and compact design, such as planetary gear systems. As an internal gear manufacturer, we often encounter challenges related to thermal deformation and efficiency losses due to frictional heating during operation. This study focuses on analyzing… Read more: Steady-State Temperature Field Analysis of Meshing Surfaces in Internal Gear Drives

This paper proposes a continuous chamfering method for cylindrical gears using a novel hobbing tool design. The tool profile calculation methodology and motion analysis are systematically established to address high-efficiency tooth edge processing demands. 1. Kinematic Analysis of Hobbing Chamfering The coordinate system transformation between gear and tool is established as follows: $$ \begin{cases} \varphi_g… Read more: Design of Hobbing Chamfering Tools for Cylindrical Gears

In modern industrial applications, helical gears are widely used due to their superior performance compared to spur gears, including smoother operation, higher load capacity, and reduced noise. However, the measurement of the helix angle in helical gears presents significant challenges, such as high complexity, intricate measurement setups, excessive time consumption, and difficulties in achieving online… Read more: Online Detection of Helical Gear Helix Angle Using Machine Vision

Our investigation focuses on planetary gear failure mechanisms in automotive differentials, combining experimental testing with analytical modeling. Planetary gears are critical transmission components where gear failure compromises vehicle safety and performance. We conducted accelerated life testing under controlled torque (T) and rotational speed (ω) conditions, measuring failure initiation points and propagation patterns. The dominant failure… Read more: Automotive Differential Planetary Gear Failure Analysis

In the field of mechanical engineering, the optimization of gear transmissions has gained significant attention over the past decades. My research focuses on developing a comprehensive optimization methodology for curved bevel gears and zero bevel gear transmissions. This approach aims to enhance design efficiency and performance by leveraging mathematical models and computational techniques. The optimization… Read more: Optimization Design of Curved and Zero Bevel Gear Transmissions

In modern mechanical transmission systems, planetary gear trains comprising sun gears, planet gears, and internal gears are widely utilized due to their compact design and high efficiency. As an internal gear manufacturer, enhancing the manufacturing precision of internal gears is critical for improving the load-bearing capacity and overall performance of these systems. Hard-faced internal gears… Read more: Research on Wheel Dressing Algorithm for Internal Gear Form Grinding

Transmission Error (TE) is a critical performance parameter for evaluating the accuracy of gear transmission systems, serving as a primary excitation source for vibration and noise. While extensive research has focused on TE in single gear pairs, studies on gear transmission chains, particularly planetary gear systems, remain limited. This paper analyzes the sources and characteristics… Read more: Analysis of Transmission Error Characteristics in Planetary Gear Systems

In the field of gear manufacturing, the precision and reliability of straight bevel gears are critical for various industrial applications. As a developer involved in this project, I have focused on creating a double-flank testing instrument specifically designed for straight bevel gears to address existing challenges in manufacturing and inspection. This instrument aims to provide… Read more: Development of a Double-Flank Testing Instrument for Straight Bevel Gears

In modern engineering applications, helical gears play a critical role in transmitting power and motion between non-parallel shafts, especially in aerospace and high-precision machinery. The non-orthogonal asymmetric helical gear, characterized by variable shaft angles and differing pressure angles on both tooth flanks, offers enhanced design flexibility and performance. This article delves into the geometric design… Read more: Design and Meshing Stiffness Calculation of Non-Orthogonal Asymmetric Helical Gears

In modern mechanical transmission systems, helical gears are widely employed due to their high load-carrying capacity and smooth operation. However, under high-speed and heavy-duty conditions, the friction-induced heat generation can lead to significant thermal loads, potentially causing tooth surface scuffing and failure. This study focuses on developing a rapid numerical method for calculating the flash… Read more: Numerical Analysis of Flash Temperature Distribution in Helical Gears Using MATLAB