Deburring method and device of steps inner-holes

Abstract

The invention discloses a deburring method for internal holes of steps and a deburring device; the deburring method comprises the steps as follows: water is used as a medium; grinding material is mixed in water to form grinding liquid; the mixed weight ratio of the grinding material and the water is 1:25-1:35; after being mixed, the grinding liquid is injected into the step hole of the workpiece by a high pressure pump under the pressure of 0.4-0.6MPa; the deburring device comprises a grinding liquid mixer, a grinding pump, a clamp with an injection pipe and an air press; the clamp is provided with a clamp liquid inlet and a high pressure gas inlet; the injection pipe is arranged at the lower end of the clamp; the grinding liquid mixer is arranged at the lower end of the injection pipe; the grinding liquid mixer is provided with a grinding material inlet, a water inlet and a grinding liquid outlet; the grinding liquid outlet is connected with the liquid inlet of the grinding liquid pump; the liquid outlet of the grinding liquid pump is connected with the clamp liquid inlet of the clamp; the gas outlet is connected with the high pressure gas inlet of the clamp. Compared with the prior art, the deburring device has simple structure and easy operation and has wide applicable aperture range for the workpiece.

Description

technical field [0001] The invention relates to an inner hole deburring method and a deburring device, in particular to a step inner hole deburring method and a device thereof. Background technique [0002] As an important part of the diesel engine, the fuel injector requires no burrs at the junction of the high-pressure oil passages of the fuel injector. The existence of burrs will cause the burrs to fall off under the long-term high-pressure pulse of high-pressure oil and affect the work of the fuel injector. The traditional process is to use the electrolytic deburring process, but because the design of the electrolytic head is designed according to the theoretical step hole, the electrolysis process cannot adapt to all processing shapes, and because the step part has a small diameter and deep depth, it is not easy to clean. There are also inner hole grinding and deburring devices that only use manual operation or abrasive belt grinding and deburring devices after fixing t...

AI Technical Summary

Problems solved by technology

[0002] As an important part of the diesel engine, the fuel injector requires no burrs at the junction of the high-pressure oil passage of the fuel injector. The existence of burrs will cause the burrs to fall off under the long-term high-pressure pulse of high-pressure oil, which will affect the work of the fuel injector.

The traditional process is to use the electrolytic deburring process, but because the design of the electrolytic head is designed according to the theoretical step hole, it cannot adapt to all processing shapes during the electrolysis process. At the same time, because the hole diameter of the step part is small and the depth is deep, it is not easy to clean

There are also inner hole grinding and deburring devices that only use manual operation or abrasive belt grinding and deburring devices after fixing the parts. Such devices are not suitable for grinding and deburring inner holes with small diameters and step junctions in the holes.

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