A synchronous automatic positioning straight cylindrical gear visual measuring instrument

This paper designs a synchronous automatic positioning straight cylindrical gear visual measuring instrument, where the internal gears are the main measurement objects and detailed profile analysis is conducted. Compared with traditional contact measurement instruments, this design not only has the advantages of fast measurement speed and high measurement accuracy, but also shows significant advantages in processing the complex shape of the internal gear tooth profile. The components designed in this paper include a high-precision rotating platform mechanism, transmission mechanisms along the X and Y axes, and a self-centering clamping mechanism. In the design process, the core components of the electric control translation stage mechanism, stepping motor, and high-precision rotating platform were selected to ensure the stability and measurement accuracy of the tester. In the process of designing the fixture, special attention was paid to the calculation and verification of the size and strength. Using SolidWorks software, finite element analysis was conducted, and the experimental results showed that the fixture could withstand sufficient force and stability when clamping the internal gear.