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.

5、 Use, maintenance, installation and repair of pneumatic ball valve:
1. Scope: This manual is applicable to the electric (or pneumatic) ball valve at the flange connection end.
2. Composition: It consists of an electric (or pneumatic) actuator and a ball valve body, which is connected by a bracket and a connecting shaft.
3. Restrictions on use
1) Temperature and pressure limits
2) The nameplate shows the maximum allowable operating pressure of the ball valve at the maximum and minimum operating temperatures.
3) The operating temperature of PTFE or RTFE seats and seals shall be between 150 ° C and 200 ° C. The operating temperature of other types of seats and seals shall be checked.
4) The nominal pressure rating (PN) of the cryogenic valve can indicate the maximum working pressure of the valve under normal temperature. (For example, PN4.0 indicates that the maximum working pressure is 40 Bar (4.0MPa) when the operating temperature is - 290C~380C).
5) Please refer to the corresponding instructions for precautions of electric or pneumatic actuators.