2. The design of the cutter is to facilitate the entry and exit of the cutter into the workpiece cavity, and the size of the cutter head should not be too large. Therefore, a movable cutter head is designed. This kind of cutter head not only solves the problem of entering and leaving the workpiece, but also ensures the position accuracy of the cutter during frequent assembly and disassembly. The assembly of turning tool is shown in Figure 2. The cutter bar is made of 45 steel (heat treated to HRC40-45). The turning tool is reformed from a central drill. The slot hole of the cutter head and the slot of the cutter bar are processed by CNC wire cutting, with transitional fit, and fixed at one end with screws to ensure the minimum tool movement in the X direction. See the figure below for cutter head disassembly

Pneumatic butterfly valve is a kind of pneumatic valve and pneumatic control valve. Pneumatic butterfly valve is mainly connected by: flange type and wafer type; The sealing forms of pneumatic butterfly valve mainly include rubber seal and metal seal. The pneumatic butterfly valve controls the switch of the butterfly valve through the power signal. This product can be used as the shut-off valve, control valve and check valve of the pipeline system. With manual control device, once power failure occurs, it can be operated manually temporarily without affecting the use.