Advanced Materials Research Vols. 328-330

Abstract: The electric spindle is the main form of high-speed NC machine spindle. Now the technology of ceramic spindle with its excellent performance applied to electric spindle is becoming a kind of important development trend. The performance of the electric spindle in largely determines machining precision and production efficiency of the high-speed machine tool. In order to meet the requirements of high speed, high accuracy, high reliability and small vibration in the rapid processing of machine tool, it is necessary to make a rigorous precision testing for the precision-processed spindle and obtain reliable data to meet the design standards and performance requirements of all ceramic high-speed spindle. In this paper, contact Surtronic25 type roughness measuring instrument is used for surface roughness analysis, and Leitz ultra PMM-C12.10.7 type tri-ordinate measuring machine is used for the roundness and cylindricity testing analysis of spindle external circular, which can make the surface roughness, roundness and cylindricity of the precision-processed zirconia ceramic spindle pore ​​to meet the design requirements and provide reliability safeguard to promote the using life and high-speed dynamic balance stability of the whole electric spindle.

Abstract: Slotting process used to achieve modify heavy-loading mine gear.According to the pitch circle radius of gear tooth profile modification is difficult to accurately draw, reverse-designed the profile of the modification slotting cutter fold may occur on the cusp, generating simulation for slotting profile modification is implemented using MATLAB based on engagement theory of slotting process,which can test whether the pitch circle is set to reasonable, to avoid resulting the top or root of conjugate gear’s profiles be cut,achieved the adaptive design of profile modification slotting cutter.

Abstract: In this paper, superplasticizer was synthesized from waste plexiglas and sodium allysulfonate (WPS). Poly(methyl methacrylate-co-ethyl acrylate) grafling sodium allysulfonate (PMMA-g-AS) was prepared through reactive extrusion in self-single screw extruder and hydrolysis reaction. The structures of the WPS were characterized by FT-IR spectrometer. The results show that structures of the WPS are clear. Properties of WPS and traditional naphthalene sulfonated formaldehyde condensates (FDN) were investigated, when water-cement ratio (W/C = 0.29) and the dosage of superplasticizer is 0.6 wt.% of cement, water reducing rate of mortar is 22.1%, which is 7.3% higher than that of FDN. BWP of the mortar of WPS is 1.4%. In addition, the compressive strengths of mortar of 3 d, 7 d and 28 d are higher than that of FDN, respectively, indicating that over-all performance of WPS reaches the standard of superplasticizer and its ratio of performance to cost is higher than FDN.

Abstract: The development status of profile modification technology and slotting process are described, the paper proposed slotting profile modification process, in view of the advantages of slotting processing. The modification curve of modification gear is fitted in the form of multi-segment involutes by resembling the principle of tooth profile modification on the grinding machine by using generating principles and changing the pressure angle, the formula of modification pressure angles of slotting cutter corresponding sections of involutes deduced,the modification profile of slotting cutter is designed.

Abstract: This paper analyses the exiting fault injection technology completely which is a key role in the testability demonstration and evaluation test, lists the problems it faces and proposes a synthetical fault injection system platform to solve the problems. Finally, a fault injection test is done on the secondary electrical power source system of a missile’s fly control module and the test result shows that the platform is much more convenient, efficient and practical in project.

Abstract: The paper’s the main research object is the multi-axis servo motor’s sports control using the movement CARDS. It researches and designs the four shafts servo motor control system by using the comprehensive application of movement control CARDS, motor drive, DLL function library and VB high-level language of software and hardware platform. The control system finishes NC machining of the function, using VB program called the function in the movement control CARDS function library.

Abstract: To solve the problem of drilling small-diameter deep-hole on difficult-to-cut materials, a kind of DF system combined with low frequency axial vibratory drilling was used. Its vibratory frequency was controlled by a frequency converter and could be adjusted continuously on-line. An inner chip removal deep-hole bit with dimension Φ8.95×500mm was developed and the material of the cutting tip was carbide alloy. Then, the drilling experiment of small-diameter deep-hole on the difficult-to-cut materials 1Cr11Ni4NMo was done. It can be found in the experiment that the chip remove was smooth, the cutting force was little, the cutting tool wear was light, the process of drilling was stable, and many factors of interfering roughness could be canceled or lightened effectively. The results show that DF vibratory drilling system can improve the machining precision and increase efficiency.

Abstract: The completion of the Three Gorges reservoir makes it possible for a fleet with 10, 000 tons or more to proceed directly to Chongqing though the Three Gorges reservoir area. The potential vessel collision risks should be highlighted to large fleets in the Reservoir arising from dead area in the radar blind zones. The analysis of radar blind sectors is of help to overcome the adverse radar conditions and take adequate actions such as piloting, maneuvering, etc. to avoid collisions risks and navigation in radar blind areas.

Abstract: Pro/Toolkit is the powerful secondary development provide of Pro/E ,It encapsulates many aimed at Pro/E bottom resources library function and call header files.Using VC++6.0 for integrated development environment and under Windows for development.This paper mainly introduces a graphic design method based on Pro/Toolkit spur gears.Firstly by using Pro/E to establish the spur gears 3d model and realize the 3d model parametric design. Then using VC++6.0 to type VC DLL program, design MFC dialog and for source program's compiles and links, to create dynamic link files(DLL or EXE files), through the registration documents and running applications.Finally realizes input gear parameters to get the corresponding gear effect in the dialog.Completed in VC++6.0 integrated development environment using Pro/Toolkit for forging spur gears graphic design. Got use Pro/Toolkit for straight tooth cylindrical gear and internal gear's secondary development interface.To avoid a lot of labor, meet different repeat and improv product design efficiency.

Abstract: Based on the large analysis software ANSYS, the FEA model of feeder was be setted up, the mechanical properties of the material was considered ,and the stress and deformation under loaded of two type materials HDPE and LDPE were be Comparative analysied, Results show that: the funnel’s stress smaller,the maximum stress only 2-3Mpa and no more than 7-31Mpa of two materials’ tensile strength.The funnel’s deformation in allowing strain range about 2-3 mm, so structure is safe.In addition,the feeder legs bearred bigger force about 60Mpa, because the material was used Q345 steel, so the strength was enough and HDPE material feeder have leeway of reduced materials.