Hong Bin Liu

Research on the impact and friction and wear properties of acrylonitrile–butadiene–rubber composites filled with SiC and graphite

To improve the friction and wear behavior of hydrogenated nitrile butadiene rubber (HNBR) composites, graphite and silane-treated Silicon carbon (SiC) were incorporated. The tribological properties of the resulting composites were investigated systematically on a model ball-on-block test rig. The friction and wear mechanisms of the composites were studied through analyzing the worn surfaces by a scanning electron microscopy. Experimental results showed that the friction and wear behavior of the filled composites were improved greatest when graphite and silane-treated SiC were added together, indicating that there was a synergistic effect between them.

Study on the Standardized Design of Belt Conveyor Based on Synchronous Technology

Belt conveyor is widely used in all kinds of automatic production line and bulk material delivery is its important applications. In order to improve the operation accuracy of the belt conveyor, in addition to strictly control the production process, tracking the manufacturing process, the most important thing is to improve the design level and design efficiency. The research used Solid Edge ST4 three-dimensional synchronous modeling technology to complete 3 d model design of belt conveyer, at the same time for the standardization of belt conveyor design research. Standardized design uses synchronous modeling, modular design technology, top-down assembly modeling technology complete standardization process from scheme design to detail design. According to the structure characteristics of belt conveyor, the integral reasonable structure is divided into several modules, modules are related by key parameters. When you modify the parameters related to realize the automatic modification of model of the structure, the standardization of product design is promoted. Research focuses on synchronous modeling technology in three dimensional modeling design and application of a belt conveyor design standardization implementation, validating the fusion of synchronous modeling technology in different design module. Through the module assembly process, within the scope of certain and realize module exchange, so as to realize the belt conveyor series, universal design. To realize the standardization of structure design can reduce repeated design and design errors, thus greatly improve the engineer design efficiency.

Surface Finish Study of Hard Milling 45 Steel with PCBN Tool

Experimental study on surface finish of high speed mill of hardened 45 steel was carried out with PCBN tool. Cutting parameters studied include different cutting depth, cutting speed and feeding speed. Surface finish after cutting were measured and compared with that of grinding. Experimental results showed that for high speed milling of hardened 45 steel, the surface finish can be very fine, different cutting parameters all have explicit effect on surface finish.

The Dynamic Simulation of Contact Force between Wheels and Ground Based on ADAMS

Contact force is a complicated force in practical problem. By using the powerful function of ADAMS in dynamics analysis, we can solve it in a comparatively accurate way. Since a number of parameters are involved in the simulation in ADAMS, the initialization of them has a great influence on the simulation. Aiming at the contact force between wheels of wheel chair and ground, the value of the parameters was calculated and analyzed in this paper. The main research object in this paper is the parameter of the ADAMS/Solver. The result of the dynamics simulation is also used to test whether the parameters are defined properly or not. With this method, we find a better way to define the parameters in ADAMS.

Design and kinematic simulation of ratchet mechanism based on ADAMS

This paper designed a ratchet mechanism of a pastry slicer. In the first place, this discourse used SolidWorks software to model the ratchet mechanism, then imported the three-dimensional model into ADAMS by the nicer interface between SolidWorks and ADAMS to build a virtual machine and simulated it. The kinematic simulation result of ADAMS not only showed that the ratchet mechanism could fulfill the anticipative design requirements, but also offered the references to design and produce physical prototype of ratchet mechanism. The virtual prototype could be used to do a deeper analysis according to different requirements.

The Parameterization Design of Standard Parts Based on UG Part Families and Excel Database

With the development of mechanical industry, more and more standard parts have been used in all kinds of large assembly process. The same kinds but different types of standard parts are used, making it boring and difficult to build standard parts. Therefore, this article describes a rapid modeling method of standard parts Based on UG Part Families and Excel database. According to the concrete examples, the procedures for establishing the standard parts library were presented. The method is simple and practical, no secondary development is needed and the design efficiency is increased.

The Design of Mechanical Arm of Hot Extruding and Upsetting Machine Based on SolidWorks

This paper established a model of mechanical arm of hot extruding and upsetting machine. According to design requirements of mechanical arm of hot upsetting extruding machine, established the 3D model of parts and the parts assembly by using 3D modeling software SolidWorks. This design realizes cyclical movement of mechanical arm that 120° level rotation and up-downswing 15° by incomplete gear mechanism and cam mechanism, and verified the feasibility of designing the project by SolidWorks.

The Deformation Analysis and Optimization of the Injection Molded Parts Based on the Moldflow and Minitab Software

The deformation seriously affects the quality of the products, which is one of the common defects of plastic parts in the injection molding. Factorial design and CAE technology was used to study the products warping rate influence in this paper. The minimum warping rate was obtained through the Minitab software and the optimized process parameters are verified with the Moldflow software. Experimental results show that the optimization design is effective and the warpage of the product is reduced.

Buffer Analysis of Multifunction Office Chair Based on ADAMS and ANSYS

The 3D model of a multi-functional office chair is completed by SolidWorks and imported into ADAMS. On this basis, we establish damping rubber model by ANSYS and import it into ADAMS through the interface between ADAMS and ANSYS. In this way, the damping rubber is added to dynamics simulation of the chair. The simulation results show that the damping rubber model established by ANSYS can bring perfect damping effects between the gear and base when the rubber is used in the chair. The results also show that the design of the multi-functional office chair can fully meet the requirements.

Analysis of Effect of Process Parameters on Warpage of a Automobile Bumper Injection Molded Parts

Take a automobile bumper for example, analysis of effect of process parameters on warpage of a automobile bumper, including melt temperature, injection time, cooling time and packing pressure, on the warpage of the automobile bumper were analyzed by means of Moldflow software. The results show the warpage decrease of the increase of the injection time, the cooling time and the packing pressure, but when the packing pressure reached 45MPa, the warpage slightly increased; the melt temperature should be picked out by the characteristics of the plastics material.