CAJ | 학술논문

以保证机床主轴精度问题为研究目标，给出了主轴关键尺寸与形位公差的标注方法和要求以及应满足的技术条件。按主轴组件受切削载荷和支反力的静力平衡条件建立其弹性变形的几何模型；利用材料力学的刚度和强度理论来分析得出了确定机床主轴前后轴颈尺寸及内孔直径的方法；根据主轴变形几何模型求得了主轴前端实际位移关系式，依前端位移最小来确定主轴的最佳支承跨距计算线图，并可用迭代法求主轴最佳跨距。可为机床主轴前后轴承选择和参数设计提供依据。
이보증궤상주축정도문제위연구목표，급출료주축관건척촌여형위공차적표주방법화요구이급응만족적기술조건。안주축조건수절삭재하화지반력적정력평형조건건립기탄성변형적궤하모형；이용재료역학적강도화강도이론래분석득출료학정궤상주축전후축경척촌급내공직경적방법；근거주축변형궤하모형구득료주축전단실제위이관계식，의전단위이최소래학정주축적최가지승과거계산선도，병가용질대법구주축최가과거。가위궤상주축전후축승선택화삼수설계제공의거。
To ensure the precision of machine tool spindle, this paper gives out labeling method for its key dimensions and form and location tolerance as wel as required technical condition. According to static equilibrium condition to spindle unit receiving cutting force and bearing reaction, it establishes the geometry model of the spindle elastic deformation and uses the theory of rigidity and strength to obtain a method of ascertaining the size of front and back shaft necks as wel as diameter of bore.The actual displacement relation of its front end is found out from the geometry model of spindle deformation, which can be used to determine a calculating line graph of the best span of the spindle according to the minimum front end displacement. Its optimum span is found by the iterative method. The results can give evidence to choosing bearings and setting parameters of the machine tool spindle.