Precision in surveying involute cylindrical spur gears is critical for restoring original design parameters of reverse gears. Integrating reverse engineering into gear metrology enhances measurement accuracy and provides robust validation tools. This approach is particularly valuable when reverse gear components face extended procurement cycles or obsolescence. Reverse engineering reconstructs digital models from physical artifacts through… Read more: Reverse Engineering Applications in Spur Gear Metrology

Spiral bevel gears made of 20Cr2Ni4 alloy steel are critical components in heavy-duty machinery due to their superior load-bearing capacity and fatigue resistance. However, grinding-induced thermal damage remains a persistent challenge during post-carburizing finishing. This study systematically investigates the grinding burn characteristics and cracking mechanisms in spiral bevel gears through microstructural analysis and hardness profiling.… Read more: Detection and Analysis of Grinding Burns in Carburized and Quenched 20Cr2Ni4 Steel Spiral Bevel Gears

In modern manufacturing, gear grinding plays a critical role in achieving high precision and surface quality for transmission components. Specifically, cycloid gear grinding machines are essential for producing high-accuracy gears used in robotics, automotive systems, and aerospace applications. However, the reliability assessment of these machines often faces challenges due to limited field failure data, which… Read more: Bayesian Reliability Assessment of Cycloid Gear Grinding Machines Using Multi-Source Data

In engineering applications, helical gears are critical components in transmission systems due to their high efficiency, stability, and durability. However, wear during meshing can lead to noise, vibration, and eventual failure, posing significant challenges to system reliability. Traditional probabilistic reliability methods often require extensive data to define accurate probability distributions, which may not be available… Read more: Wear Reliability Optimization Design of Helical Gears Based on Non-probabilistic Model

In marine engineering, the anchoring system plays a critical role in ensuring vessel stability during port arrivals, where ships often await berths, undergo inspections, or avoid adverse weather. Traditional anchor handling equipment, such as electric, hydraulic, or electro-hydraulic windlasses, is used to drop anchors and maintain position. However, under the influence of wind, waves, and… Read more: New Design of Marine Worm Gear Self-Locking Device

Abstract The spindle-turret coupling structure serves as a crucial component in Computer Numerical Control (CNC) spiral bevel gear milling machines. During the machining process, external loads are applied, causing radial deformation of the mating surface between the spindle and turret, which subsequently affects the coupling performance and machining accuracy of the machine tool. This paper… Read more: Analysis and Optimization of Spindle-Turret Coupling Performance of Spiral Bevel Gear Milling Machine

Spur gears are widely used in various industrial applications due to their compact structure and high transmission efficiency. However, most rolling bearings, gear transmissions, and cam mechanisms operate under mixed lubrication conditions, making it essential to study the lubrication performance of spur gears to ensure reliability and longevity. This article explores the transient thermal mixed… Read more: Analysis of Transient Thermal Mixed Lubrication in Line Contact Spur Gears

In mechanical engineering, the worm gear system is widely recognized for its high transmission ratio, smooth operation, and low noise characteristics. However, in practical applications, failures such as bending deformation of the worm shaft due to seizure and jamming are relatively rare. This article examines a case where a worm gear lifting mechanism experienced catastrophic… Read more: Failure Analysis of Worm Shaft Bending Deformation in Worm Gear Lifting Mechanism

In modern manufacturing, the production of straight bevel gears remains a critical process due to their widespread use in various mechanical systems. Traditional methods such as milling, planing, and broaching often involve intermittent indexing, leading to low production efficiency and challenges in achieving high precision. As an alternative, we explore the cycloid rotational indexing machining… Read more: Mathematical Model and Parameter Optimization for Cycloid Rotational Indexing Machining of Straight Bevel Gears

Internal gears are critical components in mechanical transmission systems, offering advantages such as high reliability, compact design, and precision. As an internal gear manufacturer, producing high-quality internal gears efficiently is essential for applications in aerospace, defense, energy, and transportation. Shaping is a primary method for machining internal gears, and optimizing cutting parameters like chip thickness,… Read more: Internal Gear Shaping: Chip Thickness Calculation and Cutting Parameter Optimization

1. Introduction Spiral bevel gear is critical components in mechanical transmissions, widely used in automotive, aerospace, and industrial machinery due to their high load-bearing capacity and smooth operation. Traditional machining methods, such as milling, suffer from low efficiency, high costs, and material waste. Near-net forming via precision forging offers a sustainable alternative, reducing material waste… Read more: Study on Microstructural Evolution and Parameter Optimization in Near-Net Forming of Spiral Bevel Gear

As a researcher specializing in advanced gear systems, I have focused on developing and testing innovative transmission mechanisms that offer high load capacity and compact design. One such system is the planar internal gear primary-enveloping crown worm drive, which combines the benefits of internal gears with the robustness of worm drives. This article presents a… Read more: Performance Testing of Internal Gear Crown Worm Drive

This paper presents a novel modification method for internal gearing power honing, enabling the use of standard diamond dressing wheels to achieve flexible honing wheel dressing and produce high-precision modified gears. The method significantly reduces the cost and lead time associated with custom dressing tools, enhancing the versatility of gear honing processes. 1 Introduction Gears… Read more: Research on Modification Method of Internal Gearing Power Honing Based on Flexible Dressing of Honing Wheel

Spur gears are widely used in mechanical transmission systems due to their high efficiency, reliability, and compact structure. However, conventional design methods for spur gear transmissions often involve complex calculations, reliance on engineering experience, and repetitive verification processes, leading to suboptimal results. To address these limitations, this study focuses on optimizing a two-stage spur gear… Read more: Optimization of Two-Stage Spur Gear Transmission Using Improved Particle Swarm Algorithm

This study presents a comprehensive mathematical model for hypoid gear machining based on the Spiroflex (full generating) method, adapted for modern 6-axis CNC gear cutting machines. The methodology bridges traditional cradle-type machine settings with Cartesian-type CNC systems while maintaining the fundamental principles of hypoid gear generation. 1. Face Hobbing Tool Geometry The cutting tool geometry… Read more: Mathematical Modeling and Machining Simulation of Hypoid Gears Using Spiroflex Method

In modern manufacturing engineering, the use of computer simulations has become essential for optimizing processes such as gear machining. Among various components, the straight bevel gear plays a critical role in mechanical transmissions due to its ability to change the direction of motion efficiently. However, traditional methods for machining straight bevel gears often involve extensive… Read more: 3D Reconstruction of Straight Bevel Gear from STL Data

In modern automotive transmission systems, helical gears play a critical role due to their high load-carrying capacity and smooth operation. The meshing quality of helical gear pairs is significantly influenced by factors such as support stiffness and surface treatments, which can affect dynamic behavior, fatigue life, and overall reliability. This study investigates the effects of… Read more: Influence of Support Stiffness and Surface Coating on Meshing Characteristics of Helical Gears

Abstract This paper first compares the process differences in gear honing for two MQ series automotive transmission gears. It then introduces the common defect types and causes of gear honing in batch production. To address these honing defects, two process route improvement methods are proposed. One method involves using a shaving process before heat treatment… Read more: Improving the Process of Gear Honing Defects in Automotive Gears

In this study, I explore the design and manufacturing processes of zero bevel gears, which are critical components in various mechanical systems due to their high contact ratio, smooth transmission, and ability to handle complex cross-axis motions. The zero bevel gear, characterized by a zero spiral angle at its midpoint, presents significant challenges in geometric… Read more: Design and Modeling of Zero Bevel Gears Using Face Milling Method

In modern automotive manufacturing, the assembly of rack and pinion gear systems in electric power steering mechanisms presents significant challenges due to the need for high precision, repeatability, and efficiency. As a researcher focused on automation technologies, I have extensively studied the automatic assembly process for helical gears and racks to address issues such as… Read more: Automatic Assembly Process for Rack and Pinion Gear Systems

In this study, I investigate the transmission characteristics of straight bevel gear and zero spiral bevel gear systems using finite element analysis. The primary focus is on comparing their performance under identical loading and rotational speed conditions to highlight differences in contact forces, stress distributions, and vibrational behavior. This analysis is crucial for applications in… Read more: Transmission Characteristics Analysis of Straight Bevel Gear and Zero Spiral Bevel Gear

In mechanical transmission systems, bevel gears play a critical role in transferring power between intersecting shafts, especially in applications requiring compact design and high torque transmission. However, bevel gears often face challenges such as excessive wear, thermal issues, low efficiency, and premature failure, which can significantly impact the performance and longevity of equipment. This article… Read more: Bevel Gears: Fault Analysis and Improvement

In modern mechanical systems, the demand for high-performance gear transmissions has led to the development of advanced spur gears with improved characteristics. Traditional spur gears, such as straight-cut and helical gears, often fall short in meeting the requirements of high-speed and heavy-duty applications due to issues like vibration, noise, and limited load capacity. This study… Read more: Tooth Surface Modification and Contact Performance Analysis of Spur Gears

With the rapid expansion of the electric vehicle industry, the demand for high-precision internal helical gears has surged. These components are critical in planetary gear reducers due to their compact structure, high reduction ratios, and efficient power transmission. However, traditional machining techniques such as power skiving, honing, and form grinding face significant challenges, including excessive… Read more: A Novel Generating Grinding Method for Internal Helical Gears Using Spherical Worm Grinding Wheel

Spur gears are fundamental components in mechanical systems due to their high transmission efficiency and stable performance. However, contact stresses during meshing significantly influence their fatigue life and operational reliability. This study analyzes the maximum contact stress in modified involute spur gear transmissions using Hertzian theory, focusing on the effects of gear parameters and modification… Read more: Contact Stress Analysis in Modified Spur Gear Transmission

Gear shaving is an economical and highly efficient method for finishing gear teeth. To optimize production planning and enhance efficiency, accurately estimating machining time is essential. Based on different feed directions, gear shaving processes are categorized into four types: axial, diagonal, tangential, and radial. This article focuses on axial and radial gear shaving, the two… Read more: Gear Shaving: Principles, Cutting Parameters, and Process Efficiency

In modern manufacturing, energy efficiency has become a critical concern due to rising energy costs and environmental regulations. High-speed dry gear hobbing, as an advanced gear manufacturing process, eliminates the use of cutting fluids, reducing environmental impact but introducing significant energy consumption challenges. The gear hobbing machine, with its complex electrical components and dynamic processing… Read more: Energy Consumption Distribution Characteristics and Prediction Model of High-Speed Dry Gear Hobbing Machines

In the field of power transmission systems, internal gears play a critical role in various industrial applications, particularly in compact and high-efficiency machinery. As an experienced internal gear manufacturer, we recognize the growing demand for advanced gear designs that offer superior performance, such as high contact ratios, reduced vibration, and enhanced load capacity. This study… Read more: Finite Element Analysis of Time-Varying Meshing Characteristics in High Contact Ratio Cycloidal Internal Gear Pairs

Spiral bevel gears are critical components in automotive and aerospace systems due to their high load capacity and smooth operation. This study investigates the deformation and performance evolution during hard-tooth surface heat treatment (carburizing, quenching, and tempering) through multi-field coupling simulations and experimental validation. A systematic approach combining numerical modeling, machine learning optimization, and database… Read more: Study on the Changing Rule of Deformation and Performance of Hard-tooth Surface Heat Treatment of Spiral Bevel Gear and Its Cooperative Control

As an internal gear manufacturer, we constantly face challenges in producing high-precision internal gears for automotive applications, where lightweight and noise reduction are critical. The double-headed spiral internal gear, with its complex geometry, requires meticulous cooling process design to minimize warpage and ensure dimensional accuracy. In this study, we explore the optimization of cooling strategies… Read more: Optimization of Precision Injection Cooling Process for Double-Headed Spiral Internal Gears

In the automotive industry, hypoid gears play a critical role in transmitting power efficiently within drivetrain systems. As a key component, hypoid gears are responsible for reducing speed, increasing torque, and ensuring smooth power transfer. The quality of hypoid gears is evaluated based on factors such as meshing stability, load capacity, service life, and noise… Read more: Hypoid Gear Lapping Process

As a researcher in mechanical engineering, I have extensively studied the contact fatigue crack propagation in spur gears, which are critical components in various transmission systems. Spur gears, characterized by their straight teeth parallel to the gear axis, are widely used due to their simplicity and efficiency. However, they are prone to contact fatigue failures,… Read more: Spur Gear Contact Fatigue Crack Propagation

As a key component in aviation transmission systems, straight bevel gears play a critical role in altering motion direction and transmitting torque in high-lift systems and door actuation mechanisms. The development of the C919 large civil aircraft has imposed stringent requirements on straight bevel gear performance, including higher precision, improved contact patterns, and enhanced consistency.… Read more: Influence of Milling Cutter and Testing Technology on Straight Bevel Gear Processing Quality

Helical gears exhibit complex three-dimensional spatial engagement characteristics due to their inherent helix angle. This study presents an improved analytical model for calculating time-varying mesh stiffness of helical gears considering axial deformation and tooth profile modifications. The proposed method addresses the limitations of traditional approaches that neglect three-dimensional meshing line variations and axial load effects.… Read more: Analytical Model of the Mesh Stiffness of Helical Gear Pair After Tooth Profile Modification

In my experience working with industrial systems, particularly in offshore environments, I have frequently encountered challenges with the operation of butterfly valves driven by worm gear mechanisms. These valves are integral to fluid control systems, but their performance can degrade over time due to environmental factors and design limitations. This article explores the root causes… Read more: Research on Maintenance Methods for Difficult Operation of Worm Gear Driven Butterfly Valves

Helical gears are widely used in various industrial applications, including aerospace, automotive, and marine systems, due to their high efficiency, smooth operation, and ability to handle heavy loads. However, installation errors such as angular misalignment can significantly impact the performance and reliability of helical gear systems. Angular misalignment errors, which include deviations in the gear… Read more: Analysis of Meshing Stiffness of Helical Gears Considering Angular Misalignment Error

Abstract The method to fundamentally address the imbalance in gear shaving for cylindrical gears with few teeth in transmissions. The MASTA software’s shaving dynamics simulation module was utilized to calculate and address issues in a Z12-tooth component of a transmission. The feasibility of resolving the concave defect by altering the shaving cutter’s profile shift coefficient… Read more: Dynamic Simulation and Experimental Study of Cylindrical Gear Shaving for Gears with Few Teeth

In modern manufacturing, gear grinding plays a critical role in achieving high-precision gear surfaces, especially in applications requiring superior load capacity and noise reduction. However, the process is often plagued by grinding cracks, which can compromise gear integrity and performance. As a researcher focused on gear profile grinding, I have extensively studied the effects of… Read more: Sensitivity Analysis of Grinding Parameters in Gear Profile Grinding

In modern mechanical engineering, worm gears play a critical role in various applications, including CNC machine tools, automotive systems, and precision instruments, due to their ability to achieve high transmission ratios, smooth operation, low noise, and self-locking characteristics. However, the performance and accuracy of worm gears are heavily dependent on the precision of their tooth… Read more: Research on Efficient Detection System of Worm Gear Tooth Pitch Based on Synchronous Displacement Sampling Principle

As an engineer specializing in mechanical design and finite element analysis, I have extensively studied the contact strength of helical internal gears used in wind turbine gearboxes. The failure of gears due to insufficient strength is a common issue in these systems, particularly for involute helical internal gears engaging in gearboxes. Traditional methods for gear… Read more: Contact Strength Analysis of Helical Internal Gears in Wind Turbine Gearboxes

This research addresses accuracy limitations in non-circular gear machining by implementing an optimized servo control system for CNC hobbing processes. Traditional PID controllers exhibit significant tracking errors during the complex acceleration/deceleration cycles required for non-circular profiles. We develop a hybrid control architecture combining velocity/acceleration feedforward with PID/PI feedback and apply particle swarm optimization (PSO) to… Read more: Enhanced PID Control Optimization for Non-Circular Gear Machining Precision Using Particle Swarm Algorithms

In mechanical engineering, straight bevel gear transmissions are widely used due to their ability to transmit power between intersecting shafts efficiently. The strength conditions for these gears primarily involve tooth surface contact strength and tooth root bending fatigue strength. According to standards such as GB/T10062-2003, the load capacity calculation method for straight bevel gears is… Read more: Optimization Design of Straight Bevel Gear Transmission

Abstract The internal gearing power honing process model for high-speed gears and its surface integrity characterization and evaluation. By analyzing the kinematics and material removal mechanism of the internal gearing power honing process, a numerical model is established to simulate the honing process. Experiments are conducted to verify the accuracy of the model and evaluate… Read more: Internal Gearing Power Honing Process Model of High-speed Gears and Its Surface Integrity Characterization and Evaluation

In aeronautical transmission systems, bevel gears play a critical role in transmitting power between intersecting shafts. Among various types, straight bevel gears and zero bevel gears are often considered interchangeable due to their kinematic similarities. However, significant differences in transmission performance arise from their distinct tooth profiles. This study focuses on comparing the transmission error… Read more: Comparative Analysis of Transmission Error in Straight and Zero Bevel Gears

As a researcher focused on wind turbine drivetrain systems, I have extensively studied the dynamic behavior of planetary gear systems, particularly the effects of tooth root cracks on the time-varying meshing stiffness of helical gears. Wind turbines operate in harsh environments, such as coastal areas, grasslands, and deserts, where the planetary gear sets in the… Read more: Influence of Root Crack on Time-Varying Meshing Stiffness of Wind Power Planetary Helical Gears

In the field of oil extraction, traditional rod pump systems often face significant challenges, such as excessive energy consumption, low efficiency, and severe wear between rods and tubing, especially in deviated and cluster wells. These issues not only increase maintenance costs but also reduce the overall economic benefits of oil fields. To address these problems,… Read more: Dynamic Analysis of Rack and Pinion Gear in Downhole Oil Production Equipment

Helical gears are widely used in various industrial applications such as vehicles, machine tools, ships, and power generation due to their compact structure, high load-bearing capacity, and efficient transmission. The meshing characteristics of helical gears are critical indicators of transmission system performance, and internal excitations significantly impact vibration, noise, and service life. This study investigates… Read more: Influence of Center Distance Error on Dynamic Characteristics of Helical Gears

In modern gear manufacturing, the use of indexable insert hobs (ICI hobs) has become increasingly prevalent, especially in high-volume production of large-module gears. As a mechanical engineer specializing in gear processing, I have observed that ICI hobs offer significant advantages in terms of cutting efficiency, economic viability, and environmental friendliness. These tools employ carbide inserts… Read more: Analysis and Optimization of Gear Hobbing Accuracy with Indexable Insert Hobs

1. Introduction Spur gear is widely used in mechanical transmission systems due to their simplicity, high efficiency, and precise transmission ratios. However, their inherent structural characteristics—such as time-varying mesh stiffness caused by alternating single- and double-tooth engagement—often lead to significant vibration and noise. These issues are exacerbated by manufacturing inaccuracies, assembly errors, and wear over time.… Read more: Noise Reduction of Spur Gear Shaft Systems Based on Viscoelastic Materials

Spiral bevel gears are critical components in high-speed, heavy-duty transmission systems due to their high transmission ratio, robust load-carrying capacity, and operational stability. They are widely employed in aerospace, automotive, and precision machinery applications. Understanding the nonlinear dynamic behavior of spiral bevel gear transmission systems is essential for optimizing design, manufacturing, and operational reliability. This… Read more: Nonlinear Dynamic Characteristics of Spiral Bevel Gear Transmission Systems

In modern industrial applications, the demand for large straight bevel gears has grown significantly, particularly in sectors such as power generation, shipbuilding, and mining machinery. The split structure of these gears addresses challenges in manufacturing and assembly, but it introduces complexities in machining processes. Traditional methods often rely on specialized tools like form cutters or… Read more: Cutter Position Solution in Side Milling of Split Straight Bevel Gears

Abstract:Based on the gear drawings provided by customers, this paper analyzes gear parameters, accuracy grades, hardness of hobbing blanks, and other special requirements to propose a method for formulating gear hobbing processing plans and a calculation method for gear beats. This method can determine whether a specific gear hobbing machine meets customer requirements and has… Read more: Gear Hobbing Processing Plan Formulation and Beat Calculation Method

In modern manufacturing, the rolling forming technology for bevel gears plays a critical role in enhancing metal utilization and improving fatigue strength. Unlike traditional machining methods that cut through metal fibers, rolling forming preserves the integrity of the material flow lines, which is essential for high-performance applications. In this study, we focus on the numerical… Read more: Numerical Simulation and Lug Control in Rolling Forming of Bevel Gears

In the field of mechanical transmission systems, spiral bevel gears play a critical role due to their ability to handle high-speed and heavy-duty applications. The large meshing contact surface of these bevel gears ensures smooth torque transmission and enhanced load distribution, making them indispensable in various reduction mechanisms. However, the nonlinear contact characteristics of the… Read more: Static-Dynamic Numerical Simulation Analysis of Spiral Bevel Gear Surface Contact

In modern automotive electric power steering (EPS) systems, the demand for efficient, quiet, and cost-effective transmission mechanisms has led to the widespread adoption of helical gears paired with steel worms. These helical gears, often made from nylon, offer significant advantages in terms of reduced noise, smooth operation, and lower production costs compared to traditional worm… Read more: Optimization Design of Helical Gears in Automotive EPS Systems

As an engineer specializing in precision machinery, I have extensively worked on improving the performance of internal gear milling machines, which are critical for manufacturing high-quality internal gears. Internal gears are essential components in various industrial applications, and their precision directly impacts the efficiency and longevity of mechanical systems. In this article, I will discuss… Read more: Application of Disc Spring Backlash Elimination Structure in Internal Gear Milling Machines

Helical gears are widely used in mechanical transmission systems due to their smooth operation and high load-carrying capacity. However, the dynamic behavior of helical gears is significantly influenced by internal excitations such as stiffness variation and tooth errors. Understanding the mesh stiffness of helical gears, especially when tooth profile modification is applied, is crucial for… Read more: Analytical Modeling of Mesh Stiffness for Helical Gears with Tooth Profile Modification

This study presents an active design and manufacturing methodology for face-milled spiral bevel gears using free-form surface machine tools. By establishing a mathematical model for gear meshing and machining kinematics, the proposed approach enables precise control over contact properties while eliminating errors caused by workpiece axis motion inaccuracies. 1. Gear Pair Meshing Model The contact… Read more: Active Design and Machining Methodology for Spiral Bevel Gears

Abstract:To enhance the operational performance of the hydrostatic spindle in high-speed CNC gear shaping machines, this study explores the influence of oil groove structures, based on tribology and fluid dynamics theories. Through theoretical analysis and numerical simulations, the effects of oil grooves on oil film bearing capacity, stiffness, shear force, and maximum deformation of the… Read more: Performance of Hydrostatic Spindle in High-Speed Gear Shaping Machines

Hypoid gears are widely used in automotive and aerospace industries due to their high load capacity and smooth transmission. However, their complex manufacturing process requires precise control of machine tool adjustment parameters (MTPs) to ensure optimal meshing performance. This paper investigates the influence of MTPs on contact patterns, transmission errors (TE), and tooth surface profiles… Read more: Study on the Effect of Machine Tool Adjustment Parameters on the Meshing Performance of Hypoid Gears