Among the effective, but insufficiently used at this time, reserves for improving the system of forced chip removal include the significant energy potential of the lubricating and cooling technological agent, which is fed into the cutting zone to lubricate and cool the cutting tool. A reason for this situation is the lack of a coherent concept for improving the chip removal system, as well as the practical lack of knowledge of the laws of their working processes when exercising a forced effect on the separated chips precisely when processing profile grooves. The foregoing testifies to the relevance and importance for the mechanical engineering of Ukraine of the task of creating high-performance forced chip removal systems for profile slot milling operations based on the development of a theory of their functioning. Because of the research performed, an important task has been solved, which is to increase the productivity of milling profile slots by using a forced chip removal system with rational parameters. Developed technical solutions for the chip removal system, which provides an increase in the productivity of profile slot milling. A systematic representation of the process of forced chip removal during profile slot milling has been developed, which made it possible to identify the required number of mathematical models. Particular and integral mathematical models of the functioning of the main subsystems and modules of the forced chip removal system have been developed. A simulation of the process of forced removal of chips is carried out. Based on modeling, a technique has been developed for determining the rational parameters of the forced chip removal system when milling profile slots. Experimental studies have been conducted aimed at determining the effectiveness of the proposed technical solutions and confirming the adequacy of the developed mathematical models. The created chip removal system provides an increase in the productivity of milling profile slots by approximately 2 times while maintaining the quality of surfaces and increasing the durability of the cutting tool by at least 3 times due to the use of a forced chip removal system with rational parameters.