Pay close attention to the important target manufacturing technology field

To boost productivity has been using the method of improve the processing speed is very concerned about manufacturing technology field and an important goal of unremitting struggle. As a Folding electric bikes one of the four advanced manufacturing technology of high speed machining technology, it has high cutting speed, feed speed and high machining accuracy, not only can increase productivity, and can significantly improve the machining accuracy and surface quality of the parts, is developed in recent years a set of high efficiency, high quality and low consumption in one of the advanced manufacturing technology. High speed machine tool is the material base, to realize high Cargo bike machining and high speed electric spindle unit is the "core" of high-speed machine tool parts, is the key to affect the processing performance. Based on the production process of motorized spindle in the actual cutting force under the action of deformation is too large, or producing self-excited vibration and the cutting machine can't meet the production requirements analysis, design of machine tool spindle component, the main focus is stiffness rather than strength. The influence of motorized spindle static characteristic parameters of the electric spindle design the main parameters of span and bearing preloaded force. Among them, changing the length of the front axle shoulder can change the spindle static characteristic; Bearing pre-tightening force is also effect on the characteristic of the spindle static. Span the distance between the front and rear bearing point called span, span different directly affect the stiffness of motorized spindle, at the same time it also affects the size of the dynamic characteristics of motorized spindle, such as natural frequency.