Valve grinding method

Abstract

The invention discloses a valve grinding method. The valve grinding method comprises the following steps that S1, a valve is clamped and fixed to a main shaft of a grinder; S2, the grinder is started,and the main shaft drives the valve to rotate around a valve axis; and S3, the position of a grinding wheel is adjusted so that the plane on which a grinding wheel piece is located is perpendicular to the valve axis, a grinding wheel driving mechanism is started to drive the grinding wheel piece to rotate, the valve is driven to move in the axial direction by the main shaft, the grinding wheel piece feeds radially along the valve, when a valve rod is ground, the radial feed rate of the grinding wheel piece is constant, and when the valve sealing conical surface is ground, the radial feed rateof the grinding wheel piece and the axial movement speed of the valve are completed by programming interpolation program. The grinding of the valve rod and the valve sealing conical surface can be realized by one clamping, the machining quality of the valve sealing conical surface is improved, the machining stress of the high-hardness valve sealing conical surface is eliminated to the maximum extent, the early wear cycle of the valve sealing conical surface is effectively prolonged, the block falling and scouring failure caused by unreliable sealing are reduced, and the service life of the valve is prolonged.

Description

technical field [0001] The invention relates to valve grinding, in particular to a valve grinding method. Background technique [0002] As a basic component, the valve of a marine diesel engine plays a very important role in supporting the complete marine diesel engine. It is a key moving part that determines the performance and reliability of a marine diesel engine. Since the valve is a consumable item and it is located at the heart of the marine diesel engine, it is necessary to partially disassemble the marine diesel engine for replacement, which is labor-intensive and time-consuming. If a failure occurs during use, it will definitely cause a parking accident, which is absolutely not allowed. [0003] The valve sealing cone surface of marine diesel engine is the first hot spot and dangerous part of the valve during use. It has to bear the high temperature and high pressure exhaust scour of marine diesel engine and the alternating load formed by valve opening and closing,...

AI Technical Summary

Problems solved by technology

Since the valve is a consumable item and it is located in the heart of the marine diesel engine, the replacement of the marine diesel engine needs to be partially disassembled, which is labor-intensive and time-consuming

If a failure occurs during use, it will definitely cause a parking accident, which is absolutely not allowed

[0003] The valve sealing cone surface of marine diesel engine is the first hot spot and dangerous part of the valve during use. It has to bear the high temperature and high pressure exhaust scour of marine diesel engine and the alternating load formed by valve opening and closing, which is easy to cause fatigue and erosion. Long-term It is prone to block falling and flushing failure during use, which will affect the service life of the valve

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