Self-sealing high-pressure center water outlet main shaft

Abstract

The invention discloses a self-sealing high-pressure center water outlet main shaft, which includes a cutter installation hole and a main shaft hole arranged in a rotating shaft. A clamping device anda pressing device are arranged in the main shaft hole. The clamping device comprises a pull nail and a pull claw. The front end of the pull nail is connected to a cutter. The front end of the pull claw can hold the base end of the pull nail when closed, and release the pull nail when opened. The base end of the pull claw is connected to a pull rod which is in drive connection with a power unit. The pressing device includes a mandril connected to the pull nail and an elastic member arranged between the mandril and the pull rod. The tension of the elastic member always presses the mandril to the pull nail so as to provide a pre-sealing effect; the centers of the pull rod, the mandril, the pull nail and the cutter form a continuous flow channel. When a high-pressure fluid flows into the channel, the pressure of the fluid is applied to the base end of the mandril, thus the mandril further presses against the pull nail. The greater the pressure, the greater contact force of the interface,thereby keeping self-sealing of the interface. When the cutter is retracted, the fluid releases pressure and the pull rod moves forward to open the front end of the pull claw to release the pull nail.

Description

technical field [0001] The invention relates to the technical field of high-pressure water deburring and cleaning, in particular to a self-sealing high-pressure central water outlet spindle. Background technique [0002] The high-pressure water deburring and cleaning technology mainly uses the high-speed water jet flow energy of the high-pressure cleaning machine tool to peel off the residual burrs or stubborn dirt on the surface of the workpiece. It uses water as the medium, pressurizes the water through the power device, and then passes The nozzle sprays out to perform high-pressure stripping on parts that require burrs or surface residues. A water supply flow path is set between the machine tool spindle of the high-pressure cleaner and the nozzle of the spray rod installed on the tool handle. After the water is pressurized, it directly passes through the flow channel from the spindle to the spray rod and then sprays out from the nozzle. When the existing automatic machin...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patent realizes the sealing of the flow path between the tool handle and the main shaft by setting a connecting pipe between the handle and the drawing bolt, and an elastic element between the connecting pipe and the handle, but the setting of the connecting pipe makes the flow of high-pressure water The diameter is reduced (that is, the inner diameter of the connecting pipe), and the flow and pressure of the high-pressure water are limited under the condition of using the same specification of the handle.

Secondly, since the connecting pipe and elastic fittings are on the handle, each set of handles must be made according to the same structure, which increases the cost of use

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