Machine tool specially for processing gate valve body sealing seats

Abstract

The present invention relates to a machine tool specially for processing gate valve body sealing seats, which comprises a lathe main shaft and a middle-small planker. The present invention is characterized in that the lathe main shaft is provided with an air-control clamp; the air-control clamp is mainly composed of a shell, a swing frame, an axial air cylinder, a radial air cylinder, a press head and a V-shaped clamping seat; the shell is connected with the middle of the swing frame through a bearing in a swing type; the press head is connected with the upper part in the swing frame in a sliding way, and the V-shaped clamping seat is fixedly connected with the lower part in the swing frame corresponding to the press head; the swing frame is connected with the axial air cylinder; and the shell is spirally connected with the lathe main shaft. The present invention has the advantages of that the air-control clamp is the key of the processing equipment of a valve body sealing seat designed aiming to a gate valve with small size; the processing equipment not only can be convenient to clamp, but also satisfies the angle need of sealing surface taper; the processing equipment is formed once; the work efficiency can be improved more than 5 times; and the making cost is largely reduced.

Description

technical field [0001] The invention belongs to a valve processing machine tool, in particular to a special machine tool for processing a valve body sealing seat of a gate valve. Background technique [0002] Lathe machining of special-shaped workpieces usually uses a faceplate to fix a right-angle bending plate, and then fix the special-shaped workpiece on the bending plate with a pressure plate, use a marking plate to find the center, and fasten the workpiece before processing. It is time-consuming and labor-intensive, and does not meet the needs of mass production, especially for the units that produce valves, the production orders are large, and it is required to use special fixtures for processing to complete the task. There is an included angle of 6-8° between the inner sealing surface of the valve seat and the center line of the valve body, commonly known as "valve seat swing tip". The above method was used for single-piece clamping and centering in the original proce...

AI Technical Summary

Problems solved by technology

Time-consuming and labor-intensive, it does not meet the needs of mass production, especially for units that produce valves, the number of production orders is large, and it is required to use special fixtures for processing to complete the task

There is an included angle of 6-8° between the inner sealing surface of the valve seat and the center line of the valve body, commonly known as "valve seat pendulum tip". The above method was originally used for single-piece clamping and centering during processing, and the angles of the two sealing surfaces are processed in two times. Very low labor productivity

Especially low-grade valves with small specifications, large batches and low prices can not compete with similar products in the market if they are processed by the above method.

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