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ArticleName Dynamic model of self-adaptive differential rotary feed system of a drill
DOI 10.17580/gzh.2021.10.12
ArticleAuthor Busygin A. M.

NUST MISIS, Moscow, Russia:

A. M. Busygin, Associate Professor, Candidate of Engineering Sciences,


It is impossible to advance mineral mining without using high-capacity and power-efficient machines in various operations, in particular, drilling. Design of any machine should specify engineering data of all components of the machine. This is infeasible without a comprehensive dynamic model of a machine, including inertia properties of parts and components, mechanical characteristics of drives, as well as properties and features of useful resistance forces to be overcome by the machine. This article discusses the layout of the differential rotary feed system of a drill, with detailed description of all components and operation mode. The main effect of this layout is self-adjustment of the velocity and feed of the rock-breaking tool as function of its motion resistance. The developed dynamic model of the rotary feed system is represented by a system of two differential equations. The generalized coordinates are assumed to be the angular motions of shafts of the baseline engine and the thruster. The differential equations allow synthesizing mechanism of the rotary feed system. The presented information can be useful for engineers and designers of self-adaptive rotary feed systems of drills.

keywords Feed system, drill, useful resistance force, self-adaptive system, mechanism design, automatic adjustment, dynamic model, speed–torque characteristic of drive

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