Ying Jun Li

The Review of Workpiece Loading and Unloading Robot in the Catenary Shot Blasting

Industrial robots with advantages of highly flexible, high positioning accuracy, high-efficient production, continuous operation capability in the harsh environment, can effectively replace all kinds of complex operations and high-intensity labor which cant be completed by the existing manual operation. The structural characteristic and use of the catenary abrator is described in this paper. Based on the current production status, catenary shot blasting machine workpiece handling methods are elaborated. This paper describes the use of the robot which can work quickly and efficiently loading and unloading.

The Research of Grouting Sandblasting Carrying Manipulator Based Wax Casting-Line

Mechanization and automation are the general trend of Investment casting in the world. The paper briefly discusses the sandblasting process of investment, and introduces the shell casting process. Carrying manipulator design is proposed to complete the investment casting process. The terminal arm and other major components of structural design are discussed. The terminal clamping structure is modeled. The parameters of the terminal clamping structure are designed. The research can provide some reference for the development and design of grouting sandblasting carrying manipulator based wax casting-line.

The Design of a Multi-Functional Force Loading Device

As a mechanical component, sensor can detect spatial information. Sensor technology has been widely used in national defense, aerospace, industrial inspection and automated production areas and so on. However, the sensor calibration device cannot meet the demand of the development of the sensor. In this paper, a multi-functional force loading device, which is of good technical performance, reliable operation, wide measurement range and simple measurement method, and a six-dimensional force sensor calibration method are described.

Research on Dynamics Measurement of Piezoelectric Sensor Based on PVDF Films

A new type of upper and lower cover support structure piezoelectric sensor based on PVDF films is designed in terms of piezoelectric effect. Mechanics and mathematical models are established according to the structure of the sensor. The natural frequency of the sensor is derived finally. The natural frequency of the sensor is verified to meet the requirements of dynamic measurements by using theoretical calculations and simulations. The effectiveness of the calculating method is indicated.

Motion Planning of a Nonholomonic Mobile Manipulator for Moving Object Grasping

This paper studies a nonholonomic mobile manipulator that consists of a wheeled mobile platform with a mounted serial manipulator. It is designed and developed to navigate autonomously in handling moving objects subjected to nonholonomic constraints. A camera is mounted on the front of the platform and employed to identify and collect information about distance, velocity and direction of the object. With that information collected, a motion planning system determines the preferred operation region and the obstacle-avoidance area, and thus generates the expected trajectory of the mobile manipulator. Experimental results are shown that the mobile manipulator can identify the target, generate trajectories and grasp the moving object autonomously.

Design of the Wire Rope Cleaning and Detection Line Control System Based on Touch Screen and PLC

This paper puts forth an overall plan of integrated control system based on PLC and touch screen according to the technological requirements of wire ropes cleaning and detection line. It introduces an automation control system composed of two parts by touch screen and PLC automation control system. The core of the control system is the PLC which uses I/O to achieve the control of the switch. Touch screen communicates with PLC by means of RS232 to complete all parameters input and actuators operations. First, it designs various modules of the hardware circuit according to the general scheme. PLC controls rough brush motor, high-pressure water cleaning motor, water drying valve, oil drying valve through I/O module. PLC controls take-up motor by D/A output module. It uses temperature controller to realize automatic heating control in the process of water heating and oil heating. At the same time the temperature controller communicates with PLC by means of RS485. Then, it designs the software of PLC control system which adopts the idea of modular design. As to the software of PLC control system, many programs are designed such as manual control function, automatic control function, communicating function and so on. Finally, it designs the Human Machine Interface system which completes many functions such as manual control operation, automatic control operation, parameter setting, system diagnosis, historical records and help system. The system makes the automation and intellectualization to be realized. It can monitor parameters real-time and improves production efficiency.

Research on Axis Piezoelectric Six-Component Force/Moment Sensor Clamp Device

The six-component force measurement and real-time force feedback is not only the basis of multi-equipment coordination of operational control and the force comply with the control, but also to develop the technical basis of the overloaded operators, equipment and other heavy equipment. This article designed a fastening device based on the swelling principle of surface friction, for the six-component force sensor with parallel axis rigid connection. Analysis the six-component force sensor measurement principle, study the blessing device dynamometer performance of six-component force sensor. Use the finite element software for modeling and simulation analysis of the structure. Design of the loading experiments, the experiments show that the fastening technology based on the principle of swelling of the surface friction, to solve the six-component force sensor axis fixed and force transmission, interference of swelling structure to the sensor calibration is relatively small, both achieve effective clamping, but also improves the transfer efficiency of the power flow. With good positioning, highly repetitive assembly and disassembly, convenient adjusting device, etc.

Research on Axis Piezoelectric Six-Axis Force/Torque Sensor Clamping Device

Six-axis force measurement and real-time force feedback control is realized the basis of the coordination of multi-equipment operation control and conform control, and is developed the technical basis of overloaded operators equipment and other heavy equipment. A surface friction clamping device which is based on the principle of swelling is designed in the paper, and is used to rigid connection between the six-axis force sensor and parallel shaft. The measuring principle of six-axis force sensor is analyzed. Six-axis force sensor dynamometer performance is researched under the influence of clamping device. Modeling and simulation analysis of the structure is obtained by using FEM and loading experiment is designed.

Design and Analysis of Force Sensor for Condition Monitoring System of Ball Cold Heading Forming

In order to solve the forming defects in the steel ball cold heading process, a novel force sensor which chooses the PVDF piezoelectric films as force-sensing elements is designed. The advantages and disadvantages of piezoelectric force sensor on measurement of the cold heading force are compared with existing force sensors. By using FEM, sensor’s linearity and the structure size are analyzed. Compared with the traditional sensor, this structure is more reasonable. The presented PVDF piezoelectric force sensor has wide frequency range, good dynamic performance, and can realize dynamic measurement.

Structural Optimization Design of Parallel Piezoelectric Six-Component Force Sensor

This paper describes structural optimization design of parallel piezoelectric six-component force sensor. Structure, measuring principle, and load sharing principle are introduced. The influences on load sharing effect of each component of sensor’s structure are researched. Main parameters to influence load sharing effect are obtained, and analyzed by finite element method (FEM). It is clear that the analysis results of FEM are well correspond with the theoretical analysis results. Experiment is designed to verify analysis results. The trend is in consistent with FEM analysis.The paper provides reference basis for design of parallel piezoelectric six-component force sensor.