Hong Bing Xin

Position and Orientation Analyses of Mechanism by PHCpack Solver of Homotopy Continuation

Mechanism analysis and synthesis commonly used analytic method and graphical method, etc., but the homotopy method has high efficiency in nonlinear analysis of mechanism. This paper applies the homotopy continuation method PHCpack solver to solve mechanism position and orientation, and draws the mechanism configuration according to the results obtained, the relative error of numerical results to exact solutions shows that the homotopy continuation method PHCpack solver can provide sufficient accuracy of mechanism position and orientation analysis, and meet the engineering needs.

Modeling and Simulation Research of Time-Dependent Reliability Model of Link Rod in Needle Bar Mechanism

The time-dependent reliability model of Mechanical Component is influenced by many parameters such as stress, load, strength, strength degeneration and lifetime index. This paper builds the time-dependent reliability model when life is measured by the loading numbers. The variety law of mechanical component’s reliability with the lifetime is derived from the built model and simulation of link rod in needle bar mechanism used in the sewing machine. The result shows that the time-dependent reliability model is effective and the reliability of component decreases obviously with the loading numbers when the strength degeneration is considered.

Research on the Variety Law of Time-Dependent Reliability Model of Picking Link Rod in Sewing Machine

The reliability of mechanical component is a time-varied process because the parameters such as operation condition, load, strength, are varied with time or the loading numbers. This paper builds the time-dependent reliability model when life is measured by the loading numbers. The variety-law of component’s reliability with the lifetime is derived from the built model and simulation of picking link rod used in sewing machine. It is shown that the time-dependent reliability model is effective and the reliability of component decreases obviously with the time and the increasing load standard deviation.

The Design of a Small Composting System and Turning Device

This paper introduces the basic principle, the compost system design requirements, and to introduce biodegradable composting system and design. At the same time design the structure and layout of a small biodegradable compost pool. Base on introducing the small turning device to complete a small spiral turning device of the mechanical system design.

Modeling and Simulation Research of Time-Dependent Reliability Model of Tooth Carrier in Feed Mechanism

The time-dependent reliability model of Mechanical Component is influenced by many parameters such as stress, load, strength, strength degeneration and lifetime index. This paper builds the time-dependent reliability model when life is measured by the loading numbers. The variety law of mechanical component’s reliability with the lifetime is derived from the built model and simulation of tooth carrier in feed mechanism used in the sewing machine. The result shows that the time-dependent reliability model is effective and the reliability of component decreases obviously with the loading numbers when the strength degeneration is considered.

The Design of Flexible Bearing Life Test Device

The flexible bearing break is an important factor to influence the life of harmonic drive, this paper first introduces the research situation of fatigue fracture above this the design of flexible bearing fatigue life test device of the no-load and load conditions. The device includes a driving part, a loading device, the break device and the monitoring device of bearing`s revolution when it break.

Biaxial Stretching Technology and its Development

In this paper, the development process of BOPF technology was described, the tubular film stretching method and planar biaxial stretching method were compared, several types of one-step biaxial stretching equipment were introduced, and the prospect of the development of biaxial stretching was given.

The Mechanical System Structure Design and Kinematics Analysis of the Bipedal Humanoid Robot Leg

In the study of humanoid robot, the system design and analysis of the legs is the foundation of realizing humanoid walking robot. In this paper, structure design of each leg joint has been introduced, and according to the degrees of freedom of each joint distribution, using screw theory and exponential product formula to establish the mathematical model of the legs, to analyze the kinematics of the legs, finally obtains that the range of joint movement comply with the design requirements.

Study on Dynamic Characteristics of Parallel Robot with 2-DOF

The experimental system of dynamic characteristics is set up to improve the dynamics performance and motion control quality of 2-DOF robot. The vibration acceleration response of the end actuator is measured at different speeds in two directions vertical and parallel to the workbench plane. The frequency spectrum is obtained through frequency analysis to provide a basis to improve the performance of robot.

Research on a Transmission Error-Testing System of Harmonic Drive Based on LabVIEW

On the basis of a transmission error-testing laboratory bench which is designed in advance, the research and design of a transmission error-testing system of harmonic drive are carried on. The structural composition and test principle of this testing system are introduced. Based on the software, LabView2009, the design of the transmission error-testing system of harmonic drive is finished. With the help of this testing system, the following purposes can be realized. The input and output angle data of the harmonic drive can be acquired, its transmission error is capable of being analyzed and the data will be able to be stored.