The screw consists of corespindle 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。
2
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。
3
The core pulling method has the advantages of small core pulling difficulty, simple spindle structure, low cost and no damage to the composite pipe;