This study investigates the amplitude jump, multi-solution behavior, and tooth surface impact characteristics of spur gear transmission systems considering time-varying stiffness and backlash effects. A dynamic model incorporating harmonic balance methods and continuation algorithms is developed to analyze the parameter sensitivity and solution domain boundary structures. 1. Nonlinear Dynamic Model The dimensionless governing equations for… Read more: Dynamic Characteristics and Parameter Solution Domain Analysis of Spur Gear Systems with Backlash

In the realm of mechanical transmission systems, the straight bevel gear plays a pivotal role in transferring power between intersecting shafts, commonly found in automotive, printing machinery, and engineering applications. The demand for high-precision straight bevel gears has surged with the rapid growth of industries like automotive manufacturing, where components must endure rigorous operational conditions.… Read more: Straight Bevel Gear Machining via WEDM

In the field of mechanical transmission systems, straight bevel gears play a critical role due to their ability to transmit power between intersecting shafts. As one of the primary dynamic excitation sources in gear systems, the time-varying meshing stiffness is a key parameter that influences system stability and induces parametric vibrations. Accurately calculating this stiffness… Read more: Time-varying Meshing Stiffness Calculation of Straight Bevel Gears Based on Energy Equivalence

In this article, I will delve into the intricate workings of a specialized transmission mechanism known as the planetary roller screw assembly, with a particular focus on its bearing-type variant. The planetary roller screw assembly is a high-precision mechanical device that converts rotary motion into linear motion, or vice versa, through the meshing of threads… Read more: Analysis of Motion Principle and Contact Force in Planetary Roller Screw Assembly

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, tooth surface wear remains a critical issue that can lead to vibration, noise, and eventual failure. As a researcher focused on gear dynamics, I have investigated the impact of axis… Read more: Analysis of Tooth Surface Wear in Helical Gears with Axis Misalignment

In the realm of industrial power transmission, particularly within the demanding environments of pulp and paper manufacturing machinery, the cycloidal drive stands out for its exceptional torque density, high reduction ratios, and robust overload capacity. My extensive experience in equipment maintenance and component machining has repeatedly highlighted the critical role of a single, often overlooked… Read more: Precision Manufacturing of a 180° Double Eccentric Bearing Sleeve for Cycloidal Drives

In modern electric vehicles, helical gears are widely adopted due to their high load-carrying capacity, smooth operation, and efficiency. However, meshing impacts during gear engagement can significantly influence the dynamic behavior of the transmission system, leading to vibrations and potential failures. This study focuses on analyzing the dynamic characteristics of a two-stage helical gear transmission… Read more: Dynamic Analysis of Two-Stage Helical Gear Transmission in Electric Vehicles Considering Meshing Impact

The pursuit of precision in motion control has been a defining challenge in advanced mechatronic systems, ranging from aerospace actuators and robotic joints to semiconductor manufacturing equipment. Among the various solutions available for high-ratio, compact power transmission, the harmonic drive gear stands out due to its unique operating principle, which offers exceptional advantages such as… Read more: A Comprehensive Sensitivity Analysis of Transmission Accuracy in Harmonic Drive Gearing Systems

In modern manufacturing, industries such as automotive and aerospace demand components that optimize space and minimize weight while maintaining high strength and performance. Bevel gears play a critical role in these applications, enabling efficient power transmission between intersecting shafts. Their complex geometry, which includes conical shapes and angled teeth, presents significant challenges in machining, particularly… Read more: Analysis of Single Piece Processing Technology for Bevel Gears

1. Introduction Hypoid gear, characterized by their non-intersecting and non-parallel axes, play a pivotal role in transmitting power between spatially offset shafts. Their unique geometry enables compact design solutions for applications in aerospace, marine propulsion, automotive systems, and robotics. However, hypoid gear with small shaft angles (typically ≤15°) face critical challenges in geometric design, meshing behavior control,… Read more: Geometric Design and Meshing Characteristics of Hypoid Gear with Small Shaft Angles

In modern manufacturing, gears are fundamental components widely used across various industries, including engineering machinery, wind power, machine tools, and rail transportation. Gear hobbing remains one of the most prevalent processes for gear manufacturing due to its efficiency and versatility. However, achieving high precision in large-scale gear hobbing presents significant challenges, primarily due to workpiece… Read more: Analysis and Compensation Strategy for Installation Errors in Large-Scale Gear Hobbing Workpieces

In the field of gear design, internal gears play a critical role in various mechanical systems, particularly in compact transmission units where space efficiency is paramount. As an internal gear manufacturer, we often encounter challenges in accurately predicting the bending strength under multi-tooth meshing conditions, especially for involute internal gear pairs with small tooth number… Read more: Calculation Method for Bending Strength in Multi-Tooth Meshing of Internal Gears with Small Tooth Number Difference

In the field of precision mechanical transmissions, helical gears play a critical role due to their smooth operation and high load-carrying capacity. However, traditional involute helical gears often exhibit limitations in fault tolerance, leading to vibrations and failures under high-speed and heavy-load conditions. To address these issues, tooth surface modification techniques have been widely adopted,… Read more: TCA of Real Helical Gears

In the manufacturing industry, gear shafts are typical components with diverse characteristics and processing methods. This article focuses on the manufacturing of gear shafts with large length-diameter ratios, which present significant challenges due to their slender geometry. The high length-diameter ratio complicates alignment during machining and exacerbates vibrations that adversely affect surface quality. To mitigate… Read more: Research on Processing Technology for Gear Shafts with Large Length-Diameter Ratio

In helicopter transmission systems, spur gears with high contact ratio (HCR), defined as those with a contact ratio greater than 2, are commonly employed due to their enhanced load distribution and safety characteristics. These spur gears operate under high-speed and heavy-load conditions, where lubrication and cooling are critical to prevent failures such as scuffing and… Read more: Temperature Field Analysis and Experimental Validation of Spur Gears with High Contact Ratio

In the field of automotive power transmission, hypoid bevel gears are widely used as critical components due to their ability to transmit motion between non-intersecting and offset axes. However, the design of hypoid bevel gears is notoriously complex, involving intricate geometrical relationships that must be precisely calculated to ensure efficient and reliable operation. Traditional design… Read more: Geometrical Design of Hypoid Bevel Gear Parameters

As a researcher in synthetic lubricants, I have focused on addressing the critical lubrication challenges in worm gears, which are widely used in elevator traction systems and industrial gearboxes. Worm gears, characterized by a steel worm engaging with a bronze worm wheel, operate under severe conditions involving high sliding velocities, significant frictional heat, elevated temperatures,… Read more: Development of a High-Performance Polyether Lubricant for Worm Gears

In modern industrial applications, straight bevel gears play a critical role in transmitting power between intersecting shafts, especially in heavy machinery such as mining equipment, wind turbines, and marine propulsion systems. The manufacturing of large straight bevel gears often presents challenges due to their size, complex geometry, and the need for high precision. Traditional machining… Read more: Numerical Control Machining Motion Solution for Straight Bevel Gears

In modern industrial manufacturing, the demand for rapid, precise, and non-destructive quality control is paramount. Helical gears are a critical component in countless transmission systems, prized for their superior operational smoothness, higher load capacity, and reduced noise compared to spur gears. A key geometric parameter defining a helical gear is its helix angle. Traditional measurement… Read more: Machine Vision for Helical Gear Helix Angle: A Robust Online Measurement Approach

In mechanical transmission systems, straight bevel gears play a critical role due to their ability to transmit power between intersecting shafts. Accurate calculation of the time-varying meshing stiffness of straight bevel gears is essential for evaluating their dynamic performance, durability, and noise characteristics. However, traditional methods, such as finite element analysis (FEA), are computationally intensive,… Read more: Meshing Stiffness Calculation of Straight Bevel Gears Considering Tooth Pair Coupling

During commissioning tests of a central transmission system, fracture failure occurred in the active spiral bevel gear, resulting in collateral damage to adjacent components. The contact pattern on the active gear’s concave surface was concentrated near the small-end tooth root, while the driven gear’s convex surface exhibited incomplete contact marks at the small-end tooth tip,… Read more: Failure Analysis of Third-Generation Low-Carbon High-Alloy Steel Spiral Bevel Gears

The pursuit of high-performance actuation in aerospace applications, such as missile guidance systems and robotic manipulators, demands transmission components that offer exceptional precision, compactness, and reliability. Among available technologies, strain wave gear drives, also commonly known as harmonic drives, have proven uniquely suited for these demanding roles. Their distinguishing advantages include high single-stage reduction ratios,… Read more: Nonlinear Dynamic Performance Analysis and Optimization of Strain Wave Gear Transmission Systems

Spur gears are fundamental components in mechanical systems for efficient power and motion transmission. However, localized tooth breakage, a common fault, significantly impacts the stability and safety of gear operations. The phenomenon of tooth impact, particularly back-side collision, cannot be overlooked, especially under high-speed or light-load conditions. Understanding the meshing-impact dynamics under localized breakage is… Read more: Study on Multi-State Meshing-Impact Dynamics of Spur Gears with Friction Under Localized Tooth Breakage

1. IntroductionHypoid gear is widely used in automotive drive axles due to their high overlap ratio, smooth transmission, and compact structure. However, the complex tooth surface geometry and frequent adjustments of machine tool parameters make it challenging to control their meshing performance. The contact pattern of hypoid gear directly affects vibration, noise, and operational stability.… Read more: Hypoid Gear Real Tooth Surface Contact Analysis and Adjustment Calculation

In the realm of precision mechanical transmissions, the planetary roller screw assembly stands out as a critical component for converting rotary motion into linear actuation with high efficiency, load capacity, and accuracy. My interest lies in extending this technology to multi-stage configurations, which offer significant advantages in applications requiring large strokes, high thrust forces, and… Read more: Rigid-Body Dynamic Modeling and Analysis of Multi-Stage Planetary Roller Screw Assembly

In the realm of mechanical engineering and product design, helical gears play a pivotal role due to their superior performance in transmitting power smoothly and quietly compared to spur gears. However, the complex geometry of helical gears, characterized by parameters such as module, number of teeth, helix angle, and pressure angle, poses significant challenges in… Read more: Parametric Design of Helical Gears Based on Pro/TOOLKIT: A Comprehensive Approach

Angular misalignment error represents a critical challenge in helical gear transmission systems, leading to localized stress concentration and accelerated wear. This paper establishes an iterative meshing stiffness model that integrates axial bending and torsional stiffness components caused by angular misalignment errors. 1. Angular Misalignment Characterization For helical gears, angular misalignment can be decomposed into two… Read more: Analysis of Meshing Stiffness of Helical Gear Considering Angular Misalignment Error

In the field of automotive drivetrains, hypoid gears are pivotal components due to their smooth transmission, high strength, and superior spatial arrangement compared to conventional spiral bevel gears. These gears are extensively used in rear axle drives, particularly in heavy-duty vehicles. The manufacturing process often involves gear cutting followed by lapping as a final finishing… Read more: Research on Lapping Burn and Suppression in Hypoid Gears

In modern mechanical engineering, the worm gear drive is a critical component due to its high transmission ratio, load-bearing capacity, low noise, and smooth operation. Among various types, the ZC1 worm gear drive, characterized by its circular arc tooth profile, offers enhanced meshing performance through convex-concave engagement and improved lubrication. This study focuses on analyzing… Read more: Analysis of Meshing Performance for ZC1 Worm Gear Drive

Internal gear pumps are widely used in hydraulic systems due to their compact design, high efficiency, and low noise levels. As an internal gear manufacturer, we recognize the importance of precise displacement calculation for optimizing pump performance. In this article, we present a detailed derivation of the displacement formula for internal gears based on the… Read more: Accurate Displacement Calculation for Internal Gear Pumps Based on Rotation Angle and Meshing Point Relationship

As an engineer deeply involved in the development and manufacturing of precision transmission systems, I have dedicated significant effort to understanding and improving the motion accuracy of Rotary Vector Reducers. These reducers, critical for robotic applications, demand exceptionally low motion error and backlash, often within a few arc-seconds. The challenge lies in the multitude of… Read more: Ensuring High Motion Accuracy in Rotary Vector Reducers

In the manufacturing of engine gear shafts, which are critical components in powertrain systems, surface integrity is paramount for ensuring durability and performance. These gear shafts, typically fabricated from 20Cr steel, undergo processes such as carburizing, quenching, and grinding to achieve desired mechanical properties. However, during routine grinding operations, surface cracks were observed on several… Read more: Analysis of Surface Cracking in Engine Gear Shafts

In my experience with gear manufacturing, gear grinding is a fundamental finishing process used to achieve high precision in gear profiles. Specifically, worm wheel gear grinding is employed to refine gear tooth surfaces after rough machining, particularly for hardened gears where heat treatment distortions must be corrected. This process enhances gear accuracy and improves surface… Read more: Precision Challenges in Gear Grinding and Solutions

In my research, I focus on the advanced dynamics simulation of cycloidal drive systems, which are critical components in precision machinery such as industrial robots. The cycloidal drive, known for its high torque density, compact size, and excellent backlash performance, presents complex dynamic behaviors that require detailed investigation. Through this study, I aim to leverage… Read more: Dynamic Simulation and Analysis of Cycloidal Drive Systems

In mechanical engineering, straight bevel gears play a critical role in transmitting motion and power between intersecting shafts, commonly found in automotive differentials, industrial machinery, and aerospace systems. As manufacturing informatization advances, the need for accurate mathematical models of gear products has become paramount, serving as the foundation for analyzing meshing performance, optimizing design, and… Read more: Straight Bevel Gear Modeling Based on Back Cone Tangent Plane Method

In the realm of power transmission, helical gears are indispensable components renowned for their smooth operation, high load-carrying capacity, and reduced acoustic emissions compared to their spur gear counterparts. The fundamental source of their superior performance lies in the gradual, oblique engagement of their teeth. However, this very advantage introduces complex dynamic phenomena. The time-varying… Read more: Analysis of Meshing Stiffness and Primary Resonance in Helical Gear Transmission Systems

In the field of precision mechanical transmission systems, the planetary roller screw assembly stands out as a critical component due to its high load capacity, accuracy, and reliability. As a researcher deeply involved in the study of these mechanisms, I have focused on understanding the intricate dynamics of their simultaneous thread and gear meshing. This… Read more: Dynamic Sliding Characteristics of Synchronous Meshing in Planetary Roller Screw Assemblies

In my years of experience working with motorcycle gear shaft drive systems, I have encountered numerous scenarios where proper maintenance and repair are crucial for optimal performance. The gear shaft mechanism, which transmits power from the engine to the rear wheel, is a complex assembly involving bevel gears, bearings, and shims. Failures in this system… Read more: Motorcycle Gear Shaft Drive Systems

In mechanical transmission systems, gear drives are widely used due to their smooth operation, broad power range, high efficiency, compact structure, and long service life. Among various gear types, the straight bevel gear plays a critical role in applications requiring angular power transmission, such as in aerospace and automotive industries. The straight bevel gear is… Read more: High-Speed Straight Bevel Gear Transmission Error Testing and Dynamic Performance Analysis

Abstract​ The digital modeling and time-varying meshing characteristics of hypoid gear manufactured using the HFT (Hypoid Face Hobbing) method. By simulating the tool trajectory through homogeneous coordinate transformations based on the kinematic relationships of machine tool components, precise mathematical models for tooth surfaces and root transition surfaces are established. Numerical algorithms and tooth contact analysis… Read more: Digital Modeling and Time-Varying Meshing Characteristics Analysis of Hypoid Gear

In modern manufacturing, the dynamic accuracy of feed systems in CNC machines plays a crucial role in determining machining precision. This study focuses on the helical rack and pinion gear system, commonly used in large-scale applications like mirror milling machines, due to its high load capacity and smooth operation. We develop an electromechanical coupling model… Read more: Dynamic Characteristic Analysis of Motor-Helical Rack and Pinion Coupled Feed System

In the field of power transmission, achieving high reduction ratios with substantial torque capacity in a compact package remains a significant engineering challenge. Conventional harmonic drive gear systems, renowned for their high precision and excellent reduction ratios, are fundamentally limited by the fatigue strength of their flexible spline. This limitation creates a direct conflict between… Read more: Tooth Surface Modification of Meshing Pairs in a Movable-Toothed End-Face Harmonic Drive Gear Transmission

In the field of mechanical engineering, spur gears play a critical role in power transmission systems due to their simplicity and efficiency. However, spur gears are often subjected to various modifications and misalignments, such as tooth length modification (commonly referred to as crowning) and axial misalignment, which significantly impact their meshing characteristics and dynamic behavior.… Read more: Improved Stiffness Calculation Method for Spur Gears with Tooth Length Modification and Misalignment

In the field of mechanical transmission, the need for variable speed ratios or specific motion trajectories is prevalent in various applications such as metering machinery, agricultural equipment, and textile machinery. Traditional circular gears offer constant transmission ratios, limiting their utility in such scenarios. Non-circular gears, which combine the advantages of cams and circular gears, provide… Read more: Design and Application of Internal Higher-Order Elliptic Helical Gears

Hypoid gears, characterized by their offset axes and complex tooth geometry, are critical components in automotive drivetrains. This study investigates the contact fatigue behavior of hypoid gears through finite element analysis (FEA), focusing on stress distribution and fatigue life prediction using ANSYS Workbench. 1. Geometric Modeling and Material Properties The hypoid gear pair consists of… Read more: Finite Element Analysis of Contact Fatigue in Hypoid Gears

Internal gears are critical components in automotive transmission systems, and enhancing their surface quality is essential for reducing vibration, noise, and improving operational stability. As an internal gear manufacturer, we often face challenges in achieving high-precision surfaces through conventional methods like manual polishing, which can lead to issues such as tooth surface burning, reduced bending… Read more: Design and Analysis of Fixture for Polishing Internal Gear Tooth Surface by Solid-Liquid Two-Phase Flow

The quest for enhanced efficiency and operational flexibility in agricultural irrigation machinery drives continuous innovation. Traditional hose reel irrigators often rely on hydraulic turbines for propulsion, which are inherently limited by low operational efficiency, typically below 20%, and a constrained speed adjustment range. This study focuses on the conceptual redesign and multi-objective optimization of the… Read more: Design and Optimization of a Worm Gear Based Transmission System for High-Efficiency Hose Reel Irrigation

In the field of mechanical transmission, straight bevel gears are widely used in intersecting shaft applications, such as automotive differentials. The performance of these gears directly impacts the overall efficiency and reliability of the system. With the ongoing trend toward high-speed and heavy-duty operations, there is an increasing demand for improved transmission accuracy, smoothness, and… Read more: Orthogonal Optimization Design of Isometric Modification for Straight Bevel Gears

The advancement of oilfield development into its middle and late stages presents significant challenges for artificial lift systems. Conventional rodless pumping equipment often proves inadequate for wells characterized by low production rates, high deviation angles, and severe rod/tubing wear. Existing solutions, primarily utilizing subsurface permanent magnet linear motors to directly drive plunger pumps, are hampered… Read more: Planetary Roller Screw Driven Submersible Electric Cylinder Plunger Pump: A Novel Artificial Lift Solution for Complex Well Configurations

In modern manufacturing, the demand for high-precision gear components has escalated due to advancements in automotive transmission systems. High-speed gear hobbing, a critical process for mass production, faces challenges such as heat accumulation, energy inefficiency, and reduced tool life. This study focuses on optimizing gear hobbing process parameters under high-speed conditions by integrating a Genetic… Read more: Optimization of High-Speed Gear Hobbing Process Parameters Using GABP Prediction Model and NSGA-II

As an internal gear manufacturer, I have extensively researched advanced grinding techniques to enhance the precision and efficiency of gear production. Internal gears are critical components in various mechanical systems, and their manufacturing processes often require specialized equipment. In this article, I propose a novel method for grinding face gears using a cylindrical internal gear… Read more: Internal Gear Grinding Method for Face Gears

In the field of mechanical design, engineering drawings serve as critical blueprints for translating conceptual designs into tangible products. These drawings provide comprehensive information about the shape, dimensions, geometric features, and tolerance requirements of components, such as spur gears. However, a significant challenge arises when converting these 2D representations into 3D models, particularly in accurately… Read more: 3D Reconstruction of Spur Gears from DXF Files

In modern mechanical engineering, the design of straight bevel gears is critical due to their ability to change transmission direction, high重合度, and smooth operation. These gears are widely used in aerospace, automotive, and heavy machinery systems. However, the design process involves numerous parameters, complex calculations, and iterative checks, which are time-consuming and prone to errors.… Read more: Parametric Design and Optimization of Straight Bevel Gears Using Visual Lisp

In modern mechanical transmission systems, bevel gears play a critical role due to their ability to transmit power between intersecting shafts. Among various types, spiral bevel gears are particularly favored for high-speed and heavy-duty applications because of their larger contact area and smoother operation compared to straight or helical bevel gears. However, the complex nature… Read more: Static and Dynamic Numerical Simulation Analysis of Tooth Surface Contact in Spiral Bevel Gears

In the field of robotics, precision motion control is paramount, and the rotary vector reducer plays a critical role in achieving high accuracy and low backlash. As a key component in robotic joints, the rotary vector reducer must exhibit minimal geometric lost motion to ensure positional repeatability and dynamic performance. In this article, I will… Read more: Analysis of Geometric Lost Motion in High-Precision Rotary Vector Reducers

In modern gear design and manufacturing, achieving high precision in tooth surface geometry is critical for ensuring optimal performance, especially in applications such as aerospace, automotive, and marine industries. Straight bevel gears are widely used due to their ability to transmit motion between intersecting shafts, but traditional methods for evaluating their meshing quality, such as… Read more: NURBS Surface Fitting and Error Analysis for Straight Bevel Gears

In the realm of modern mechanical transmission systems, the helical gear stands out due to its superior performance characteristics. Compared to spur gears, the helical gear offers smoother operation, higher load capacity, and reduced noise and vibration because multiple teeth are in contact at any given time during meshing. This is attributed to its teeth… Read more: Design of a High-Cavitation Injection Mold with Two-Stage Ejection for a Helical Gear Shaft

In my research and industrial practice, I have often encountered the challenges associated with non-conjugate worm gear drive systems. These drives, where the worm and gear are not manufactured as a matched pair, are common in various mechanical applications due to their cost-effectiveness and flexibility. However, achieving optimal meshing performance in such non-conjugate worm gear… Read more: Simulation Analysis of Tooth Contact Area in Non-Conjugate Worm Gear Drive

In the field of automotive drivetrain systems, hyperbolic gears, also known as hypoid gears, play a critical role in transmitting power between non-intersecting axes, particularly in drive axles. The machining of these complex gear geometries has long relied on specialized equipment, often imported at high cost. As a researcher involved in gear manufacturing technology, I… Read more: Innovative CNC Milling Machine for Hyperbolic Gears: Structural Design and Experimental Research

In the automotive industry, the differential system plays a critical role in ensuring smooth vehicle operation, particularly during turns or on uneven terrain. As a key component, the planetary gear shaft within the differential facilitates power distribution to the wheels, allowing for varying rotational speeds. However, failures in this gear shaft can lead to severe… Read more: Failure Analysis of Differential Planetary Gear Shaft