Inspection device for coaxiality of cylinder cover valve base hole and guide pipe bottom hole

Abstract

The invention discloses an inspection device for the coaxiality of a cylinder cover valve base hole and a guide pipe bottom hole, which comprises a dial indicator, and is characterized by further comprising a core shaft which is of a hollow structure is can be inserted in the guide pipe bottom hole, a core rod inserted at one end of the core shaft and a rotatable inspection device base arranged atone end of the core rod in a sleeved manner, wherein one side of the inspection device base is provided with a measuring lever which can be inserted into the valve base hole can be connected with theside wall of the valve base hole in a contacted manner, the lower part of the measuring lever and the inspection device base are provided with a first spring therebetween, and a measuring head of thedial indicator penetrates through the inspection device base and is connected with the upper part of the measuring lever in a contact manner; and the core shaft is internally provided with a positioning mechanical capable of automatically positioning the axis of the guide pipe bottom hole below the core rod. The inspection device is simple in structure and convenient to operate, can measure the coaxiality of the cylinder cover valve base hole and the guide pipe bottom hole quickly and accurately, greatly improves the measurement efficiency and accuracy and reduces the labor intensity and theproduction cost.

Description

technical field [0001] The invention relates to the technical field of engine measuring equipment, more specifically, it relates to a coaxiality inspection tool for a cylinder head valve seat hole and a conduit bottom hole. Background technique [0002] The coaxiality of the cylinder head valve seat hole to the guide tube bottom hole is a special index of the cylinder head. If it exceeds the technical requirements of the drawing, it will affect the assembly of the valve seat, and may even cause the valve seat to crack, thus affecting the whole machine. Therefore, after the machining of the cylinder head valve seat hole is completed, its coaxiality needs to be tested. At present, the detection of the coaxiality of the valve seat hole to the bottom hole of the conduit is generally carried out by means of a three-coordinate measuring machine, a coaxiality meter, etc., but this detection method has the following defects: before the detection, the cylinder head needs to be transp...

AI Technical Summary

Problems solved by technology

At present, the detection of the coaxiality of the valve seat hole to the bottom hole of the conduit is generally carried out by means of a three-coordinate measuring machine, a coaxiality meter, etc., but this detection method has the following defects: before the detection, the cylinder head needs to be transported away from The production line is sent to the workbench of the three-coordinate measuring machine or the coaxiality meter. The logistics transportation distance is too long, and it is necessary to find the reference point during the inspection. This process is time-consuming, labor-intensive, and economically expensive. , not suitable for batch detection

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