Valve seat maintenance machines

The utility model provides a valve seat maintenance machines, include: the location guide arm, the first end of location guide arm is used for wearing to establish in the pipe of valve seat, the emery wheel, the cover is established on the guide arm of location, the diameter of emery wheel has the setting value, the emery wheel bottom surface is equipped with the abrasive surface, the abrasive surface with the location guide arm forms sets for the angle, the abrasive surface is followed the emery wheel radially have a settlement width, be used for with the valve seat insert's of valve seat work facial features laminating. The utility model discloses can reduce the valve seat maintenance degree of difficulty and risk. 本实用新型提供种气门座维修机具，包括：定位导杆，所述定位导杆的第端用于穿设在所述气门座的导管中；磨轮，套设在所述定位导杆上，所述磨轮的直径具有设定值，所述磨轮底面设有研磨面，所述研磨面与所述定位导杆形成设定角度，所述研磨面沿所述磨轮的径向具有设定宽度，用于与所述气门座的气门座圈的工作面相贴合。本实用新型能够降低气门座维修难度和风险。