Pipe fitting cutting device and horseshoe opening cutting method adopting same

Abstract

The invention discloses a pipe fitting cutting device and a horseshoe opening cutting method adopting the pipe fitting cutting device. The pipe fitting cutting device comprises a machine body, a cutting device and a conduit clamping device are installed on the machine body, the conduit clamping device comprises a first clamping base, a second clamping base and a clamping device base, the first clamping base and the second clamping base are oppositely arranged on the clamping device base front and back and are matched front and back to clamp a conduit, the first clamping base is fixed to the clamping device base, the second clamping base is driven by a clamping motor or a third clamping air cylinder to slide on the clamping device base front and back, the clamping device base is installed on the machine body through a rotating shaft and can be driven by a rotation driving device to rotate, the cutting device feeds front and back, the axis of the rotating shaft is located on a feeding cutting face of the cutting device, and after the first clamping base and the second clamping base clamp the conduit, the axis of the straight line section of the conduit end of the conduit intersects with the axis of the rotating shaft. According to the scheme, a horseshoe opening can be rapidly and accurately formed through cutting.

Description

technical field [0001] The invention relates to the technical field of aerospace and pipe fittings processing, in particular to a pipe fitting cutting device and a horseshoe cutting method thereof. Background technique [0002] There are tens of thousands of accessories on aerospace vehicles such as airplanes and rockets, and many accessories are connected by metal conduits. For example, there are many metal conduits on the rocket body and engine, which are used to transmit various fluids and support the rocket. It is an extremely important part of the rocket for various tasks of flight. "Rocket Propulsion / Journal of Rocket Propulsion" 2018 Issue 03 "Liquid Rocket Engine Piping Fracture Failure Analysis and Power Optimization" explains that: the safety and reliability of the liquid rocket engine piping system has become the key to whether the engine can work safely key. [0003] Due to the complex shape of the aerospace catheter, it is necessary to use CNC pipe bending equ...

AI Technical Summary

Problems solved by technology

If the "horseshoe" of the rocket guide is not precisely processed, there will be installation stress on the rocket guide when it is installed on the rocket, and the stress will easily aggravate and cause the rocket guide to break, bringing a potential fatal risk to the rocket (see "Missile and Space Launch Technology / Missiles and Space Vehicles, "Stress Corrosion of Rocket Piping and Its Preventive Measures" in Issue 01, 2005)

[0006] With the development of my country's aerospace industry, in recent years, some end-cutting and flat-mouth processing equipment have been adopted successively. These equipment will reliably clamp the conduit during processing, and then use cutting saw blades to cut the conduit, which can neatly cut off the redundant parts at both ends of the conduit. , after cutting, the end face of the tube is processed by a flat end tool, but the whole process is still mainly controlled manually, mainly relying on human experience. There is a phenomenon of repairing due to the deviation of the installation end face, which affects the rocket manufacturing progress and product quality

Moreover, in the prior art, the device for clamping the conduit is usually fixed by screws, and it takes a lot of time to replace the clamping device each time, which directly affects the mass production of the rocket.

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