Kinematic planning and in-situ measurement of seven-axis five-linkage grinding and polishing machine tool for complex curved surface

An integrated polishing and in-situ measurement machine tool with seven-axis and five-linkage is developed for manufacturing and measuring the complex curved surface such as blisk. Firstly, this paper introduces the structure and configuration of the machine tool. Then, the kinematic analyses of the polishing side and measuring side of the machine tool are carried out respectively and the inverse kinematic solutions of them are derived. The motion of each axis can be calculated based on the tool location of the complex curved surface through the inverse kinematic solution. Aiming at the in-situ measurement of parts with complex curved surfaces, the forward kinematic solution, the processing of measured data of blade surface and the calculation algorithm of the machining allowance are developed in the paper. Finally, the above algorithms are verified by polishing the experimental stainless-steel sample.