Study on movement model of tracing measurement equipment during crankshaft noncircular grinding process

The characteristic of noncircular grinding process causes the crankshaft online measurement to be extremely difficult. This paper proposes one new online active tracking measuring technique which checks the crankshaft diameter and roundness error simultaneously when the crank is ground. The paper discusses the relative velocity between sensors and the crankshaft, which affects the measuring accuracy. This paper also establishes and analyzes the movement model of track grinding online measurement system. Finally, the velocity model is confirmed by related experiments.