Papers by Author: Guo Xing Liang

Abstract: Gear honing processing is a kind of processing method which belongs to the point-contact generating gear finishing. Its movement form is equivalent to a pair of gears transmission which the surface of the gear-honing-tool is adhered a layer of grinding grain. When it works in rolling processing, the contact-point between the workpiece and gear-honing-tool is moving. Then the moving point becomes a line in the space, and with the gear-honing-tool being in axial play, a standard flank of tooth is finished. Using the gear meshing principle, kinematics model of relative sliding velocity in the contact-point between the workpiece and tools is established, based on which the contact-line equation. and acceleration equation. at the contact-point are derived. The contact-line is solved in a given parameters of the workpiece and tool in MATLAB. The theoretical derivation and experimental results show that the speed in diverse along the direction of the tooth depth is the main reason for the roughness value and surface texture of workpiece. The acceleration of contact-line at the tooth flank is different, and it is leading reason that the processed workpiece gears appear profile distortion. Finally, the testing system is established for researching honing gear process. It is showed in the results that the acceleration difference can lead to the CBN abrasive falling away from gear honing tool, and even the "anti-cutting" phenomenon.

Abstract: In the paper, the vector expression of cutting speed on the contact-points has been obtained by the coordinate transformation. The cutting speed is the contact-point position function which is correlated with contact-line in the process of honing gear. It is diverse along the direction of the tooth depth, so the surface texture of workpiece gear has a visible difference from the top to the root of the tooth. It is showed in the results that the surface roughness value of same tooth has further increscent differences with the increasing honing speed, and the surface of tooth is in the same quality.

Abstract: This paper analyses the material removal and surface forming mechanism of ultrasonic auxiliary gear honing. According to the Huygens principle of diffraction, a theory is proposed firstly that the ultrasonic waves transmit through the being honed gear in toroidal form, and the mathematical equation of the abrasive trace is built that expresses the relative movement between CBN abrasive and the gear surface. The equation is accordant with the experimental result. The paper concludes that the material removal of the gear surface depends on two factors, one is that CBN abrasives scratch the gear surface, and the other is that the gear surface vibrating itself along its normal direction impacts the abrasives.

Abstract: Ultrasonic-vibration-based hardened-gear honing is creativity technique in the domain of gear finishing. The honing technique is improved by introducing ultrasonic machining to improve the accuracy and surface quality of hardened-gear. With respect to the design and manufacture of ultrasonic-vibration-based gear honing machine, the paper refers to reasonable project and trial-manufacture. The electroforming technique of spur gear CBN honing-wheel is helpful to improve the comprehensive performance of honing-wheel. Finally the characteristic and advantage of ultrasonic vibration based gear-honing technique is described.