Advanced Materials Research Vols. 989-994

Abstract: The paper mainly studied flat wheel’s surface precision, through envelope method, the wheel is used for grinding large aperture axial symmetry aspherical surface. With non-contact measuring method, designed and developed measuring system for wheel in-suit inspection. Aimed at wheel radius errors, proposed the compensation method, so it has certain value to enhance the surface precision.

Abstract: In this paper, functions of intelligent fault monitoring system of hydraulic excavator are analyzed. Architecture of the fault monitoring system is presented. Key technologies of the monitoring system are discussed detailed. Key parts of the fault monitoring system such as inspection controller, travel controller and programmable monitor, remote monitoring system is developed. As a result, the intelligent monitoring system is of great useful for monitoring the faults of hydraulic excavator.

Abstract: The motion commands to feed drives constitute a major source for excitation of the vibrations. In this paper the vibration of feed drive caused by the motion commands is simulated by using a mathematic method. The mechanical transmission system is modeled as a dual inertia system. Three typical trajectories are used to analyze the effect of motion profiles on feed drive vibration by using a simulation model of feed drive controller.

Abstract: This paper compares two kinds of moving target analysis systems, which are the motion history image system and the moving object tracking system. Each system includes two parts which are moving target detection and tracking, achieving respectively detection of the direction of moving targets or representation of motion trajectory. Through experiment analysis of moving human and vehicles, each system is determined which situation it is suitable for.

Abstract: The design of injection die on the upper cover of clamshell phone is introduced. The dual-plate die has side gate for opposite glue injection, the parts are ejected by ejector pin, the side reversed buckle contains three blocks, the reversed buckle at flip shaft consists of two inner sliders, and all the eight inner reversed buckles are made up of inclined pushing rods, and the cooling system embraces "U" shaped cooling waterway. Its application in practice has proved the reasonable die structure, smooth remolding, and qualified plastic part design.

Abstract: To complete the step of pacing bolts more accurate and efficient in factory, This article design the 4-DOF manipulator Based on PMAC motion controller, including hardware architecture, software architecture. This control system combines the IPC strong management and real-time control of PMAC to achieve a 4-axis robot, smooth fast-precision, high efficiency, high reliability, cost-saving design goals.

Abstract: Impregnated diamond core bits are often used in core drilling for geological surveys. A tri-state theory is proposed to describe the three states in drilling processes for a diamond particle or a bit. These states are contacting state, cutting state, and ploughing state. Furthermore, the relations among thrust and other mechanical parameters are also summarized. The optimal value of the specific energy is in the cutting state. Several experiment results verified the proposed model. This mechanism is useful for selecting operation parameters in core drilling using impregnated diamond core bits.

Abstract: The one-droplet-per-pulse transfer is widely considered to ensure the stability of the welding process in pulsed MIG welding; a peak pulse followed by a median pulse in a square wave pulse can effectively enhance droplet transfer controllability and improve weld appearance. The instantaneous current and voltage waveforms, the probability density distributions of current and voltage, and U-I graphs collected by the waveform wavelet analyzer were used to assess the welding quality and weld bead appearance. The 1.2-mm carbon steel welding wire experiments showed that under the same conditions, using a median waveform could significantly improve the welding quality. If the median current was too small or too large, the influence on the welding process was not obvious, and was only representing an increase of the base current or peak current phase. If the median time was too short, the energy accumulated was not enough to control the droplet transfer; conversely, too much median time led to globular droplet transfer. With a backward median current range of 180A-225A and duration range of 8ms-12ms, all experiments resulted in a nice weld effect.

Abstract: In order to greenhouse plants for automatic irrigation operation, was designed based on the soil moisture monitoring system of RS 485 bus system, the oscillation frequency of the clock oscillation circuit, and a main chip count, frequency signal PC software will be the main chip records show, form curve, thus providing the basis of the data for the automatic irrigation, experimentally tested for a long time, the system performance is stable and reliable.

Abstract: In a long distance slurry pipeline transport system, pulp valve plays a vital role, which combined the pulp valve application is more, ram is one of the important components of composite slurry valve. This article mainly aims at gate has carried on the design and analysis, finite element modeling, and study the corresponding constraints, in the process of loading method, large diameter combination valve gate stress and strain distribution are obtained, combined with the optimization method and finite element analysis software for its structure optimization research, realize the lightweight of the gate. To reduces the manufacturing cost of the gate, as to provide theoretical basis for design.