DOI: 10.18503/1995-2732-2025-23-2-88-96
Abstract
Moscow State Technical University, Moscow, Russia Abstract. Problem Statement (Relevance). For the manufacture of internal threads, thread milling cutter is used as the most flexible and versatile processing method, which is not inferior in performance to tap processing. To achieve the highest productivity, the thread should be processed for its entire length with tools in one complete revolution around the thread axis, as a result of which the angular and radial movement of the end of the tool increases due to its cantilever attachment in the tool setup and the mismatch of the axes of the tool and the thread. This is the reason for the appearance of a taper thread under the action of the cutting force, the forecasting of which will allow you to determine the geometric parameters of the new tool, as well as adjust the parameters of the cutting mode to obtain a thread of a given accuracy. Objective. Is to develop a theoretical model for calculating the taper of the thread, based on a theoretical model of the cutting force during thread milling with thread cutters. Methods Applied. The theoretical model of thread taper after threading was implemented in the PTC Mathcad Prime 3.1 program. Originality. The sequence of calculation of the taper of the internal metric thread formed during radial and angular displacement of the tool adjustment due to the force interaction of the tool with the workpiece is proposed. The calculation uses a previously developed theoretical model for calculating the components of force when threading with a thread cutter, and also takes into account the influence of a tool adjustment containing a collet chuck. Result. The efficiency of the proposed theoretical model for calculating taper when milling with thread cutters is confirmed by a comparative analysis of the calculated taper values with experimental data, which showed a similar trend. Practical Relevance. The results of a computational experiment using comparative analysis with experimental data on the taper of real thread samples showed that the maximum calculated taper values exceed the experimental values, and may be a limitation for solving optimization problems when designing a new tool using the proposed calculation methodology.
Keywords
thread milling, thread milling cutter, cutting force, modeling, taper of the thread, cut layer
For citation
Malkov O.V., Karelskiy A.S. Providing the Accuracy of the Thread During Milling Based on the Calculation of the Movement of the Tool Setup. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2025, vol. 23, no. 2, pp. 88-96. https://doi.org/10.18503/1995-2732-2025-23-2-88-96
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