Abstract
Machine tool rams are important constructional elements found on vertical lathes as well as on many other machines. In most cases, a machine tool ram constitutes an assembly with significant dynamic compliance that affects the machine’s ability to achieve stable cutting conditions. There are various solutions for increasing a machine tool ram’s stiffness and damping. This paper describes an innovative concept of a two-axial electromagnetic actuator for controlled vibration dampers with high dynamic force values. The described solution is purposefully based on the use of standard electric drives. As a result, the size of the actuator is easier to scale to the required application. The solution is designed as a spacer between the end of the ram and the head. The paper presents the actuator concept, construction design, current control loop solution and experimental verification of the controlled vibration damper’s function on the test ram in detail. The presented position measurement concept will enable the use of non-contact position sensors for motor commutation as well as for possible use in vibration suppression control. Applications can be expected mainly in the field of vibration suppression of vertical rams of large machine tools.
Highlights
Vibration suppression actuators are usually additional devices that generally introduce an extra force into the system. This force acts against the movement, reducing the amount of energy accumulated in the mechanical system
The actuator was designed as a biaxial device
It does noteffect haveon a the resulting actuator parameters, it complicates the selection of the measuring system of significant effect on the resulting actuator parameters, it complicates the selection of the the positions of theofprimary and secondary parts of thesecondary motor in relation other measuring system the positions of the primary and parts of to theeach motor in (Figure relation to each other (Figure 4b)
Summary
Vibration suppression actuators are usually additional devices that generally introduce an extra force into the system. An actuator that functions in a similar way was used in article [10] to suppress the vibrations of the aforementioned SORALUCE machine. Used in article [10] to suppress the vibrations of the aforementioned SORALUCE machine In this case, the actuator was designed as a biaxial device. Highly dynamic spindle integrated actuator is presented in vibrations of machine tool rams. Conceptual of a two‐axial actuators for vibration suppression of long, slender and massive machine tool structures, especially vertical rams It presents a conceptual design of a two-axial electromagnetic actuator as well as a description of its construction and basic parts.
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