A novel method called Real Tooth Contact Analysis (RTCA) is proposed to elucidate the tooth-face contact law of cylindrical gear with variable hyperbolic circular-arc-tooth-trace (VH-CATT gears) and predict direction size pattern. This study establishes a coating surface model for tooth coated red lead powder specific thickness, analysis considering installation errors. Utilizing three-dimensional complete mathematical TCA technology, an algorithm based on intersection principle devised...

The kinematics of a robotic manipulator is critical to the real-time performance and robustness robot control system. This paper proposes surrogate model inverse for serial six-degree freedom (6-DOF) manipulator, based on its symmetry. Herein, derived via training Vector-Quantified Temporal Associative Memory (VQTAM) network, which originates from Self-Organized Mapping (SOM). During processes training, testing, estimating this neural priority K-means tree search algorithm utilized, thus...

In order to theoretically research the tooth surface maximum contact stress of a Cylindrical Gear with Variable Hyperbolic Circular-Arc-Tooth-Trace (VH-CATT), computing formula VH-CATT cylindrical gear is investigated according Hertz in this paper. Insufficient fatigue strength will lead pitting corrosion, plastic deformation and other damages. Therefore, must be carried out. The calculation particularly considering effect normal force, total carrying length, synthetical curvature radius,...

Machine tool error is one of the most important research contents in gear transmission error, and contact characteristics are factors affecting performance. The establishment tooth analysis (TCA) model pair plays a guiding role analyzing pair. Based on forming principle variable hyperbolic circular-arc-tooth-trace cylindrical (VH-CATT gear), structure coordinate system VH-CATT machine established. meshing conditions, surface mathematical with established, TCA influence different errors...

This paper is to study errors of a milling machine used for the machining Circular-Arc-Tooth-Trace (CATT) cylindrical gears.A topological structure model established using lower numbered body array approach.Coordinate transformation matrices between adjacent parts are set up by D-H homogeneous matrix.Based on and matrices, comprehensive error CATT gears established.According model, angle point linear combinations moving parts, while displacement related errors, adjustment parameters tools,...

Wear is the main failure form of gear transmission interface, runs through whole life cycle service, and distributed error tooth surface due to introduced assembly will make actual meshing state different from ideal state, thus affecting wear trajectory state. Therefore, considering coupling relationship between contact analysis, variation laws amount interface variable hyperbolic circular-arc-tooth-trace cylindrical were studied under consideration in this article. Based on analysis method...

Abstract. The variable hyperbolic circular-arc-tooth-trace (VH-CATT) cylindrical gear is a new type of gear. In order to research the contact characteristics VH-CATT gear, tooth surface mathematical models this kind pair are derived based on forming principle rotating double-edged cutting method with great cutter head in regard. Then, according differential geometry theory and Hertz theory, formula induced normal curvature equation ellipse condition continuous tangency two meshing surfaces,...

Taking the circular arc tooth trace (CATT) cylindrical gear as a research object, in order to obtain CATT gear’s meshing contact impact properties, hypothesis of was put forward based on dynamics theory and transmission physical model, mesh model set up further. The finite element solution algorithm for solving problem given. Then, accurate 3D surface equation, analysis models with different positions were established study distribution rule stress relationship between velocity, position,...

Gear transmission characteristics are the most important research contents in gear transmission, and contact factors that affect performance. The establishment of tooth surface analysis (TCA) model a pair plays guiding role analyzing its characteristics. rotary equation variable hyperbolic circular-arc-tooth-trace (VH-CATT) cylindrical cutter is obtained with large forming principle, mathematical established based on meshing conditions. With influence installation error performance...

The lubrication characteristics of a cylindrical gear transmission with variable hyperbolic circular-arc-tooth-trace (VH-CATT) are important theoretical bases for the tribology design and its fatigue life prediction. Existing studies it based on simplified linear contact models, which limited to one specific meshing position only. Therefore, mathematical models tooth analysis (TCA) loaded (LTCA) established calculate most time-varying parameters in period, such as kinematic parameters,...

In this study on cylindrical gears with variable hyperbolic circular arc and tooth trace (VH-CATT), the surface equation of VH-CATT gear is obtained according to theory meshing differential geometry.The data points are using MATLAB.Then, based points, a model pair was built UG.Considering geometric features, contact form, relative velocity, entrainment load, etc., an isothermal elastohydrodynamic lubrication established.On basis existing (EHL) theory, EHL numerical solution by utilizing...

As the most important working area of gear, teeth play role transmitting load and power. Tooth line tooth profile are two main characteristics surface, which affect shape meshing contact characteristics. Taking elliptical cylinder gear pair in reversing device a new type drum pumping unit as research object, dynamic process is simulated by LS-PREPOST software based on loaded analysis (LTCA) technology. The distribution law effective plastic strain, stress surface pressure direction well...

To reconstruct the tooth surface of a circular-arc-tooth-trace cylindrical gear (CATT gear), 3D model has been developed and contact characteristics have investigated.Based on development principle meshing theory, equation, curvature equation ellipse CATT were deduced, it was proved that point contact.Then, reconstructed developed.Next, by performing finite element analysis impression experiment, again is contact, area became an under loading.Finally, influences design parameters...

The special variable ratio transmission characteristics and complex tooth profile curve of elliptic gears make it difficult to analyse their characteristics, which restrict the application development elliptical gears. Given that, a characteristic analysis method based on testing is proposed in this paper. By building high-precision gear test rig, distribution laws dynamic lost motion, static back clearance, stiffness, friction torque vibration with speeds loads are analysed obtained....

As an important parameter to distinguish noncircular gear from cylindrical gear, eccentricity is very for the meshing characteristics and transmission error of gear. In order study elliptic a pair in reversing device new type drum pumping was taken as research object. Based on analysis pressure angle instantaneous contact ratio introduced into model error. The influences angle, ratio, were analyzed, accuracy verified by finite element method. results show that has great influence significant...

摘要: 机床误差是导致圆弧齿线圆柱齿轮齿面误差的主要原因,研究机床误差与齿面误差之间的关系将为机床加工参数反求、齿面误差修正等提供理论依据。基于圆弧齿线圆柱齿轮成型原理建立了齿轮机床结构模型,建立了机床坐标系体系。通过齿坯和刀盘位置误差、刀具形状误差对机床整体误差进行描述,基于啮合原理推导了理想情况下和包含机床误差的齿面方程。研究了齿轮误差曲面计算方法,采用二阶近似曲面和齿面平均误差影响系数分析不同机床误差下误差曲面,研究机床误差对齿面误差的影响规律。通过实例分析了被加工齿轮几何参数不变时和变化时,机床误差对圆弧齿线圆柱齿轮凹齿面误差影响规律。

Tele-operated bilateral hydraulic servo system with master-slave robot at the core can be complex manipulated in uncertain or extreme environment (such as space, seabed, radicalization, battlefield, etc.). In this paper, a novel force feedback is presented, based on analysis of home and abroad, which adopts tuning PID control algorithm RBF neural network same time. From simulation results, presented to verify effectiveness proposed algorithm.The briefness, fast response, strong robustness,...

An automotive suspension determines both the driving stability and comfort of vehicle occupants.This paper establishes two kinds degrees freedom for automobile vibration model uses PID controller to establish an adaptive open-loop closed-loop control system.Respectively, by step interference, white noise sinusoidal interference input, studying characteristics in vertical direction.By numerical simulation, we obtain displacement acceleration-time graphs.The simulation results show that first...

The hydraulic servo control system, which is the important component of parallel robot, a high order, nonlinear, dynamic asymmetry, parameter uncertain seriously affect performance so it very difficult to gain good with traditional control. Based on sliding mode variable structure method combined fuzzy and adaptive control, an algorithm was presented by taking Stewart platform system robot as research object, term controller approximated method. simulation results showed that compared...