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

This electric ball valve has great advantages in operation. It is a combination of rotating ball valve and electric equipment. Its own mechanism is a valve core that can rotate 90 degrees. Therefore, when the motor drives the whole equipment, it will not produce too much vibration. It mainly depends on the internal control valve to control the rotation, It mainly depends on the current and the regulated operation to control the strength and stability of the operation. The common use is now in medicine, food, water and electricity, heating and other industries. It has a clear direction of use and can also be used to produce different products.