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Mathematical model of the tensioning in the collet clamping mechanism with the rotary movable input link on spindle units
(2021) Prydalnyi, Borys; Sulym, Heorhiy
The article presents a mathematical model of tensioning in a collet clamping mechanism with a rotary movable input link designed for spindle units. The study is aimed at improving workpiece clamping processes in machine tools through a more accurate determination of the mechanism’s force parameters. The proposed model takes into account the geometric and kinematic characteristics of the clamping system components as well as the features of force transmission during operation. An analysis of the relationship between the design parameters of the mechanism and the resulting clamping force is carried out. The obtained results can be used to optimize the design of spindle units, increase their operational reliability, and ensure the stability of machining processes. The developed mathematical model provides a basis for further research and improvement of clamping devices used in modern machine-tool systems.
Mechatronic clamping mechanism with electro-hydraulic actuator for machine spindle units
(2021) Prydalnyi, Borys
The article presents the development of a mechatronic clamping mechanism with an electro-hydraulic actuator designed for machine spindle units. The proposed system combines mechanical, hydraulic, and electronic components to ensure reliable and efficient workpiece fixation during machining operations. The operating principles and structural features of the mechanism are analyzed, with particular attention paid to improving clamping accuracy, increasing operational reliability, and enhancing automation capabilities. The use of an electro-hydraulic actuator enables precise control of clamping force and contributes to the overall performance of spindle units. The research demonstrates the potential of mechatronic solutions for modern machine tool systems and advanced manufacturing technologies.
Synthesis of structures of spindle units with electromechanical actuators of clamping mechanisms as complex combined axisym-metric system.
(University of Gabrovo (Bulgaria), 2020) Prydalnyi, Borys; Kuznetsov, Yuriy
A new approach to creation spindle units with electromechanical drivers of clamping mechanism for machine tool by using the genetic-morphological approach is proposed. Certain provisions of the theory of genetic structural-schematic synthesis of spindle units according to objective search function are highlighted. The motor spindle with an electromechanical clamping mechanism is considered as a combined system that creates a spatial composition of two structures where each performs its function. The model of formatting technical units like "motor-spindle" as a complex combined system with possibility of its description at different levels of structural complexity is presented. The features of developing new technical system as a process of its evolution with transferring individual information from one generation to another are taken into account. Based on new principle, a combination of new and well-known technical solutions in the design of a new technical object is made. This approach opens up the possibility of formulating fundamentally new system-level tasks related to the identification principles of structural organization and the laws of development objects and systems of technological equipment.
Automatic device with self-braking for fixation objects in executive links of technological equipment
(2025) Prydalnyi, Borys
The main characteristics of a new automatic device for the fixation of objects in executive links of technological equipment, which determine its suitability for use, are considered. The device is based on a new structure that ensures its self-braking after the process of object fixation and increases the reliability of holding the objects, which is especially important in safety-critical applications. The proposed structure can be implemented for use in various types of executive links of technological equipment, and in the paper, it is considered the most complex application of the device—as part of a spindle assembly. For the proposed design, the method of calculating the main parameters of this type of mechanism is presented. Based on the results of the research, analytical and graphical dependencies have been obtained describing the change of the clamping force from 45 to 15 kN when increasing the spindle speed up to 10000 rpm, and the dependence of the clamping force on the torque at the input link. Based on the results of the research, a preliminary conclusion has also been drawn regarding the possibility of using electromechanical clamping mechanisms of the proposed type as a part of spindle units of machine tools, also because the rotor diameter of the mechanism is within 100 mm and the stator is within 200 mm.

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