An appropriate model is established to analyze angular displacement
error in machining process of linear cutting machine in paper. Analysis
results are as follows: as the radius of machining decreases, the angle
errors become larger. For the same radius of machining, the increasing
angular indexing causes increasingly larger indexing error. When
θ is 45 degree, indexing error reaches the maximum,
... [Show full abstract] and after 45
degree, indexing error begins to reduce. In order to improve the
indexing accuracy of internal gear machining and automation level, full
closed-loop numerical control system of linear cutting machine with high
precision for internal gear machining is designed. The whole system
consists of three parts including molybdenum wire automatic measurement
and compensation system, hollow rotary table-type intelligent time
grating sensor and control system of linear cutting machine. Here the
time grating sensor provides angle information feedback for full
closed-loop control system. The experimental results demonstrate that
the linear cutting machining of internal gear is realized with
full-automatic, high-precision and low-cost.