Novel high-precision ultrahigh-pressure water cutting head

Abstract

The invention discloses a novel high-precision ultrahigh-pressure water cutting head. The water cutting head comprises a nozzle body, a water nozzle, a sand mixing chamber, a sand blasting pipe, a sand inlet pipe and a high-pressure water switch; a spring chuck is arranged in an inner cavity at the lower end of the nozzle body; the spring chuck comprises a hollow cylinder, and a hollow conical head arranged at the lower end of the cylinder; one end, far from the conical head, of the cylinder is matched and embedded with the inner cavity, and the outer wall is fixedly connected with the nozzle body through a chuck pressing screw cap; the water nozzle, the sand mixing chamber and the sand blasting pipe are matched and sleeved in the spring chuck in sequence; the sand blasting pipe extends out of the spring chuck; a sand blasting pipe pressing screw cap sleeves the conical head; and the sand blasting pipe pressing screw cap comprises a cylindrical end in threaded connection with the cylinder, and a conical end pressed and bonded with the conical head. The water cutting head can reduce the position change of the sand blasting pipe in the wearing part replacement process.

Description

technical field [0001] The invention relates to a water cutting machine, in particular to a novel high-precision ultra-high pressure water cutting head. Background technique [0002] The ultra-high pressure water cutting head is an important part of the water cutting machine. Its function is to convert the pressure energy of high-pressure water into the kinetic energy of high-speed water jet to cut and process workpieces of various materials. Among the cutting head parts: water nozzle, sand mixing chamber and sand spray pipe are all vulnerable parts and need to be replaced regularly. In the process of replacing the consumable parts, only by ensuring that the position of the sand spray pipe of the cutting head remains unchanged can the cutting precision of the cutting head be guaranteed. In the existing cutting head structure, the nozzle body and the connecting pipe are connected through threads; the connecting pipe and the high-pressure water switch are also connected throu...

AI Technical Summary

Problems solved by technology

In the existing cutting head structure, the nozzle body and the connecting pipe are connected through threads; the connecting pipe and the high-pressure water switch are also connected through threads. When replacing the water nozzle and the sand mixing chamber, the thread between the nozzle body and the connecting pipe needs to be removed. Due to the existence of thread clearance, the cutting head with this structure cannot ensure that the position of the sand blasting tube remains unchanged when replacing the wearing parts

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