化工通用机械、电站设备中热交换器管板孔直径一般在φ12～φ25mm左右,内部加工环槽比较困难。目前常见的小孔环槽加工方法,是使工具旋转并通过与固定在床身上的碰块撞击而实现径向走刀运动,存在体积大、断续走刀,加工精度差、光洁度低、刀具寿命短、调节使用不便等缺点。下面介绍一种新型小孔切环槽工具(见图1)。 Chemical general machinery, power plant equipment, heat exchanger tube plate hole diameter is generally φ12 ~ φ25mm or so, the internal processing ring groove more difficult. At present, the common hole drilling method is to make the tool rotate and realize the radial pass motion by colliding with the bump block fixed on the bed body. There is a large volume, intermittent pass, poor machining precision, low finish, Short life, inconvenience and other shortcomings. Here’s a new hole cutter tool (see Figure 1).