Grinding method for sealing surface of inverted conical cavity bottom of gas control block

Abstract

A grinding tool for a sealing surface of the bottom of an inverted-cone-shaped cavity of a fuel gas control block consists of a grinding execution piece and a positioning supporting piece, wherein the grinding execution piece comprises a grinding head, a planet wheel, a mandrel and a handle; the mandrel comprises a center shaft and an eccentric shaft; the axis of the center shaft is parallel to the axis of the eccentric shaft, and an eccentric distance exists between the axis of the center shaft and the axis of the eccentric shaft; the handle is detachably connected to the upper end of the center shaft; the planet wheel is connected to the lower end of the eccentric shaft through a bearing; the grinding head is connected to the lower side of the planet wheel, and the grinding head and the planet wheel rotate coaxially; the positioning supporting piece comprises a grinding body and a center wheel; the center shaft of the mandrel is connected to the inside of a center hole of the grinding body through a bearing; the center wheel is an inner gear, is engaged with the planet wheel, is fixed at the lower end of the grinding body and is coaxial with the center hole of the grinding body; rotation of the handle is transformed into compound motion of rotation and revolution of the grinding head through transmission of a planet wheel mechanism; and the sealing surface of the bottom of the inverted-cone-shaped cavity of the fuel gas control block is ground comprehensively and uniformly. By the grinding tool for the sealing surface of the bottom of the inverted-cone-shaped cavity of the fuel gas control block, the grinding quality and efficiency are improved. The grinding tool for the sealing surface of the bottom of the inverted-cone-shaped cavity of the fuel gas control block has the advantages of convenience in use and controllable grinding track.

Description

technical field [0001] The invention relates to a tool for mechanical processing, in particular to a manual grinding tool and method for the sealing surface of an inverted cone cavity bottom of a gas control block of a dual-fuel diesel engine, and belongs to the technical field of diesel engine manufacturing. Background technique [0002] With the development of LNG carriers, this kind of high value-added ships also puts forward new requirements for the diesel engines used. It is necessary to use natural gas as a new power source on the basis of traditional energy medium diesel to achieve the goal of one engine. Dual fuel effect. In response to this demand, various manufacturers have modified the EFI low-speed diesel engine, and added a gas control mechanism to the original cylinder hydraulic control unit. The gas control mechanism includes such figure 1 The part shown is the gas control block A. The gas control block A has a window valve hole A1 for accommodating the windo...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the inverted conical cavity is an inverted conical structure, the diameter of the neck is smaller than the diameter of the bottom of the cavity. Therefore, after the general-purpose grinding tool is inserted into the neck of the cavity, the area that can be ground must be smaller than the area of ​​the neck, which cannot reach the drawing. Required sealing surface size

[0005] 2. The traditional grinding tool specially designed to match the shape of the inverted cone must be ground through circular interpolation, but manual control of the circular arc track grinding will inevitably cause scratches and overcuts between the grinding tool and the inner wall of the cavity, resulting in cavity destruction of internal surfaces

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