论文部分内容阅读
一般使用的B 型薄壁管扩口式管接头的结构,由具有74°外锥面的接头体1、带有66°内锥孔的螺母2、扩过口的冷拉紫铜管3等构成(见图1)。具有结构简单、尺寸紧凑、重量轻、使用简便等优点。故在机床行业液压系统管路中广泛采用,适用于中低压(3.5～16MPa)液压系统管路。使用时将扩过口的管子置于接头体74°外锥面和螺母66°内锥孔之间,旋紧螺母使管子的喇叭口受压,挤贴于接头体外锥面和螺母内锥孔的间隙中,从而产生密
The structure of a generally used type B thin-walled tube flared pipe joint consists of a joint body 1 having an outer cone surface of 74 °, a nut 2 having a cone bore of 66 °, a cold-drawn red copper tube 3 for expanding a port, and the like Composition (see Figure 1). Has the advantages of simple structure, compact size, light weight, easy to use and so on. Therefore, it is widely used in the hydraulic system of the machine tool industry. It is suitable for medium and low pressure (3.5 ~ 16MPa) hydraulic system piping. Use to expand the mouth of the pipe is placed in the joint body 74 ° outside the cone and the nut between the tapered bore 66 °, tighten the nut so that the bell mouth of the tube, squeezed in the joint body cone and nut taper Of the gap, resulting in dense