№4 (59), 2021. TECHNOLOGY AND EQUIPMENT OF MECHANICAL AND PHYSICAL-TECHNICAL PROCESSING

D.A. Blokhin, I.N. Drozdov

Mapping accuracy of movements of the milling machine table under loading

The article presents a technique for evaluation and compiling a map of the accuracy of the vertical milling machine table, considering the deformations of the supporting system of the machine under the influence of forces equivalent to cutting forces. Due to the complexity, it is impractical to measure the accuracy of the trajectory of the machine during machining a part with a tool. It is necessary to simulate the load equivalent to cutting forces, excluding the use of coolant
and the chip factor. A setup has been developed to create an equivalent dynamic load on the machine tool. The proposed technique can be used to determine the locality of the working area of the machine that provide the greatest rigidity and processing accuracy.

Keywords: CNC machine tools, milling accuracy, supporting system rigidity, feed drive system dynamics, ballbar.

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