Tool for detecting location degree of arc surface

Abstract

The invention discloses a tool for detecting the location degree of an arc surface. The tool for detecting the location degree of the arc surface comprises a positioning part and a detecting part, wherein the positioning part is used for being inserted into a starter installation hole in an engine cylinder block, the detecting part is connected with the positioning part and used for detecting the location degree of the arc surface, and the size of the detecting part is larger than the diameter of the installation hole. According to the tool for detecting the location degree of the arc surface, after positioning is conducted through the positioning part which can be inserted into the starter installation hole in the cylinder block, the location degree of the arc surface is detected through the detecting part, whether the arc surface is qualified or not is judged by observing whether interference exists between the detecting part and the arc surface, a detection result is visual, the error is small, the detection precision is improved, the detection process is convenient and easy to execute, the labor intensity of personnel is relieved, special detection tool manufacturing cost and production cost are reduced, and accidents caused by poor machining quality are avoided.

Description

technical field [0001] The invention relates to a tooling fixture, in particular to a tool for detecting the position of an arc surface. Background technique [0002] The cylinder block is the main part of the engine. During the machining process, the arc surface processing on the cylinder block is relatively simple, but it is difficult to detect the position of the arc surface, especially the arcs of 1 / 10 circle, 1 / 20 circle and other sizes. On the one hand, the detection error is relatively large, and many process planners directly use tools such as tool assurance, machine tool program assurance, and comparison methods to control. In mass production, there will be many abnormal changes, unqualified parts, and even a large number of workpieces will be scrapped. [0003] The machining site can theoretically guarantee the position of about 1 / 10 of the arc surface of the rear end face of the cylinder by relying on the machine tool program. However, if there are changes in the...

AI Technical Summary

Problems solved by technology

If three coordinates are used to detect the arc surface, the error of the result is large, because the error of the center of the circle constructed by the three coordinates is large; using special checking tools, although it can be tested, but the manufacturing cost of special checking tools is high; using standard parts for comparison, visual inspection cannot Identify changes after machine tool maintenance, and ensure that changes after machine tool maintenance can be reflected through program assurance

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