Tool clamp for machining sealing face of brake valve body

Abstract

The invention provides a tool clamp for machining a sealing face of a brake valve body. The tool clamp is matched with the valve body and comprises a base disc seat, an inclination annular disc, a rotating disc and a locating disc, the inclination annular disc is fixed to the base disc seat, an inclined face with the angle the same with the wedge angle of the sealing face of the valve body is formed above the inclination annular disc, the rotating disc is fixed to the inclined face of the inclination annular disc, the locating disc is fixed to the rotating disc, a locating groove is formed above the locating disc, a bearing balance device is located in a cavity of the inclination annular disc, one end of the bearing balance device is fixed to the base disc seat, the other end of the bearing balance device abuts against the rotating disc, and the aim that the rotating disc can rotate in the radial direction of the device to be matched with the device. According to the tool clamp, sealing faces in valve bodies of different sizes are flexibly machined, the machining efficiency is improved, and the machining error is reduced.

Description

technical field [0001] The invention relates to the technical field of gate valve body processing equipment, in particular to a fixture for processing the sealing surface of a gate valve body. Background technique [0002] Gate valves are widely used in the industrial field, and their purpose is to control the flow of fluid in the valve body pipeline through the gate valve. Therefore, in order to ensure the reliable sealing of the gate valve, the relative sealing surfaces of the gate plate and the valve seat are usually designed as a wedge-shaped structure with a wide top and a narrow bottom. Tight to ensure a reliable seal. [0003] In the existing technology, such as figure 1 As shown, when processing the valve seat sealing surface of valve body a, the end flange of valve body a is usually used for clamping and positioning, but because the valve seat sealing surface of valve body a is not perpendicular to the channel of valve body a, but has A wedge angle makes the seal...

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Problems solved by technology

[0004] The inventor has found that the above method has disadvantages, which are: 1. When the two end flanges on both sides of the valve body are not parallel or not in the same axis, the two sealing surfaces of the valve body will be processed. Error; 2. Since the two end flanges on both sides of the valve body need to be exchanged as positioning references during the processing process, the re-clamping of the valve body requires repeated measurement and calibration, resulting in low processing efficiency and large processing errors; 3. It is impossible to flexibly process the sealing surfaces of valve bodies of different sizes

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