Novel Microsurface Machining Techniques for Improving the Traction Coefficient

Transmission characteristics and phase number optimization on the transmission mechanism of rod gear pulse continuously variable transmission

“…In order to improve the transmission characteristic condition of P-CVT, many researchers have been researching on the gear or combining type transmission mechanism. For example, L-X Xu and Y-H Yang, 4 S Li, 5 Heieh, 6 and M Blagojevic et al 7 study the pin-cycloid transmission, whose variable range of transmission ratio is great; M Ota et al 8 and S Miyata et al 9 work on the half toroidal transmission, which has the advantages of strong bearing capacity and low noise; D Nagahata et al 10 and RG Parker and J Lin 11 research the planetary gears transmission, that is smooth and steady; W Zeng et al 12 and C-J Liang 13 put forward the combined transmission of ratchet and connecting rod, which realizes the function of zero output and timely adjust-speed; J-X Zhang et al 14 offer the combined transmission of conical cam and connecting rod, and it has the merits of the stable output-speed and good adjust-speed effect; Z-X Zheng and colleagues 15,16 make a search of the combined mechanism of cam and connecting rod, and it overcomes the disadvantages of inertia force and inertia moment; D Li and colleagues 17,18 propose a non-coaxial style two-output impulse generating mechanism, which can realize the output of two rocker bars in one motion cycle. The above gear and combination transmissions have their own advantages; however, the problem of oversize has not been solved yet, because the phases of transmission mechanism are located in multiple parallel planes.…”

Development of Whirling Electrical Discharge Texturing on Inner Surface of Small Hole

“…Each factor may affect the contact and lubrication performance under certain conditions [3]. The density of a microstructure on a textured surface was previously studied in an attempt to reduce the friction coefficient [1,[4][5]7]. In this study, the texture-area ratio on a cylindrical inner surface and the diameter of craters processed by WEDT were studied.…”

“…In general, tribological characteristics can be controlled by creating microstructures on surfaces to decrease the friction coefficient and maintain a good lubrication condition [3][4][5][6][7][8][9][10][11]. Therefore, the creation of microstructures on the sliding parts of transport machinery has been studied [1,[4][5]8]. The reduction of friction of tribological components is considered to reduce energy use and environmental impact [1-2, 4, 5, 9].…”

Micro-Structuring on Cylindrical Inner Surface Using Whirling Electrical Discharge Texturing

“…To find new energy resource is difficult, therefore energy problems can be solved by improving energy efficiency. For example in transport machinery, energy efficiency can be improved by decreasing surface roughness and friction coefficient [1,2]. In addition, tribological characteristics can be controlled by processing microstructures on a surface which is not only to decrease friction coefficient but also maintaining good lubricated condition [3,4].…”

“…In addition, tribological characteristics can be controlled by processing microstructures on a surface which is not only to decrease friction coefficient but also maintaining good lubricated condition [3,4]. Therefore, microstructure was studied to process on a sliding part of transport machininary [1,5]. In general, microstructures are processed by cutting or laser beam maching and so on.…”