As the core parts for high speed spindle, the dynamic properties of Angle contact ball bearing has important effect on cutting performance and machining precision of whole machine.
角接触球轴承作为高速主轴的核心部件，其动力学特性对整机的切削性能和加工精度有重要的影响。
The screw consists of core spindle and several hollow screw segments which can be replaced easily for different materials.
该螺杆由芯轴和几个空心螺杆段组成，对于不同的物料，只需更换其中某些空心螺杆段即可。
The core pulling method has the advantages of small core pulling difficulty, simple spindle structure, low cost and no damage to the composite pipe;
本发明方法具有抽芯困难小，芯轴结构简单，成本低，不伤及复材管件的优点。
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