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我们在加工中子衍射仪的轴承孔时,设计了专用弹性研具,经实际使用取得了较好的技术经济效果。一、弹性研具的结构与设计要求弹性研具的结构如图1所示。研具的工作面由四个珠光体铸铁研磨块1组成,各研磨块可分别在弹簧2的作用下自由胀开,并能围绕弹簧的轴心自由摆动。这样,研具在工作过程中可自动调整,使与工件孔处于同轴状态,而不受机床传动精度和工件安装精度的影响,同时还能保持工作面上的研磨压力均衡。研磨块有效工作面的长度一般为孔深的1/3～2/3。过长会不利于校正前道工序产生的锥度误差;过短则会增大磨块轴向磨损的不均匀性,从而降低孔形精度。
When processing neutron diffractometer bearing hole, we designed a special elastic research tool, and achieved good technical and economical results through actual use. First, the structure of flexible research tools and design requirements Flexible research tool structure shown in Figure 1. The working surface of the grinding tool consists of four pearlite grinding blocks 1, each grinding block can be freely expanded under the action of the spring 2 and can swing around the axis of the spring freely. In this way, research tools in the work process can be automatically adjusted so that the hole with the workpiece in the coaxial state, not by the machine transmission accuracy and accuracy of the installation of the workpiece, while maintaining the working surface of the grinding pressure balance. The effective length of the working surface of the grinding block is generally 1/3 ~ 2/3 of the hole depth. Too long will not help to correct the taper error caused by the previous procedure; if it is too short, it will increase the uneven wear of the axial wear block, thus reducing the hole accuracy.