精车或磨加工齿轮坯时；在装夹上用弹簧涨胎较心轴方便，并宜於在批量较大的情况下采用；这是弹簧涨胎的优点。但其尺寸环较复杂；要求精度高，因而制造较困难是其缺点。 此时，如何选用装夹夹具；以保证在最经济的原则下达到齿轮加工精度要求；就是需要仔细认真的研究的问题了。 Fine car or grinding gear billet; In the folder with the spring up the tire more convenient than the mandrel, and should be used in larger batches; This is the advantage of spring uptake. However, the size of the ring is more complex; require high precision, so the more difficult to manufacture is its shortcomings. At this point, how to choose the fixture fixture; to ensure that the most economical way to meet the requirements of gear machining accuracy; is the need for careful and serious study of the problem.