3。 The turning tool can be adjusted along the X direction in the cutter head and fixed with screws. Error compensation of tool tip arc radius In actual processing, the tool tip used has an arc with a small radius. In NC turning programming, for convenience, the tool tip is usually regarded as a point (point A in Figure 4). In tool setting, the imaginary tool tip of the turning tool is generally used as the tool location. Therefore, in turning, because the motion track of the imaginary tool tip is inconsistent with the actual tool cutting point, if no compensation measures are taken, machining errors may occur. Although there will be no error when cutting the end face, inner diameter and outer diameter, there will be less cutting or over cutting when cutting the cone and arc.

The power component of electric ball valve is mainly used to control the valve and is closely connected with the valve. This component is mainly driven by electricity. During operation, it is affected by the stroke, rotating moment and axial direction driving force. Because the special properties and utilization efficiency of the power component of the valve depend on the type of valve, the operation specification of the component and the position of the valve on the pipeline equipment, Because the customer needs to know and master the selection and assembly method of power parts, and then select the appropriate parts, the overload situation needs to be fully considered. Overload actually means that the torque force of work transfer is greater than the torque force of control. This inspection link is a very important part of the whole valve inspection.