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c.主动动带盘 主动动带盘空套在曲轴上,可沿曲轴轴向移动,这样可改变主动轮的工作直径,达到变速的目的。它与离心滚柱和V带二者都接触,其设计关键是内外侧轮廓的设计。其外侧轮廓形状的设计与主动定带盘轮廓形状的设计一样,见5.2d。其内侧轮廓形状决定了主动动带盘的轴向运动的幅度和离心滚柱的运动轨迹,应与卡盘的轮廓形状设计结合起来考虑。
c. The main driving belt reel The main driving belt reel sets on the crankshaft, which can move along the crankshaft in the axial direction. This can change the working diameter of the driving wheel to achieve the purpose of speed changing. It is in contact with both the centrifugal roller and the V-belt, and the key to its design is the design of the inside and outside contours. The design of the profile of the outside contour is the same as the design of the contour of the active reel, see 5.2d. The shape of the inner profile determines the magnitude of the axial movement of the main drive pulley and the movement path of the centrifugal roller should be combined with the design of the contour shape of the chuck.