Solution for taper when turning cylindrical surface

There are many reasons for the taper of the cylindrical surface of the turning, sometimes due to the poor positional accuracy of the spindle axis of the headstock relative to the bed rail. In the case of no-quantity and inspection tools, the following emergency methods can be used to solve the problem temporarily. When a positive cone appears on the outer cylindrical surface of the turning (ie, the end of the chuck is large), as shown in the figure, use the diagonal horn (or adjustable horn) 7 and 8 below the bed to raise the A of the lathe. Corner, and use 3, 4

High Temperature And High Pressure Special Valves

Special valve refers to can be applied to a variety of special environment and adapt to a variety of complex conditions of the valve, is a very widely used in the national economic construction and development of a general mechanical products, in energy, chemical, medicine, agriculture, food, military and other industries are playing an extremely important role. With the in-depth promotion of industry 4.0, special valves have also entered a new stage of development, and the technology and market of special valves have also undergone new changes.
Compared with ordinary types of valves, special valves have obvious characteristics such as extremely complex internal flow, special structure, special materials and special uses. As a special valve in many valve types, it is applied to various special environments, can adapt to various complex working conditions, plays a special role and undertakes a particularly complex task. Therefore, special valves are often referred to as the "throat" of industrial pipes. More typical special valves are the main feed water regulator, pressure regulator spray valve, high pressure trap, Tesla valve, pilot Globe Valve, multistage pressure reducing valve, sleeve control valve, heart flap valve and so on. It is self-evident that the technical complexity of special valves is much higher than that of ordinary valves, which belong to high-end valve series both technically and in the market.

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