The autinobile shock absorber connecting rod makes very strict tolerance requirements on the
diameter size, roundness, straightness. Because it is a kind of thin and long workpiece, it is
difficult to measure the errors of the roundness and axis straightness. Furthermore, it brings much
difficulty to realize the highly efficient autinatic measurment as the connecting rod is mass
produced. Therefore, there is not any kind of connecting rod automatic measuring instrument
available in China.
In this article, the authors put forword the methods and principles which can autiatically and
efficiently measure the above-mentioned errors of the connecting rod and have designed a reliable
and simple automatic measuring instrument, Furthermore, the designing requirements and methods of
the software and the electrical system are also introduced. The problem of the automatic measurement
of the automobile shock absorber connecting rod has been solved. and it not only guarantees the
quality of the rod, but also provides the basis for technical analysis of the product.