Patent
Electromagnetically actuated rotating machine unbalance compensator
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TLDR
In this paper, an electromagnetically actuated machine balancer (110) including a plurality of peripherally placed magnetic circuits and a power driver which selectively interrupts the magnetic flux through the circuits, thereby moving unbalanced rotors (350-351) in a desired manner to compensate for machine unbalance.Abstract:
An electromagnetically actuated machine balancer (110) including a plurality of peripherally placed magnetic circuits and a power driver which selectively interrupts the magnetic flux (1210) through the circuits, thereby moving unbalanced rotors (350-351) in a desired manner to compensate for machine unbalance. The balancer assembly (110) includes a remote stationary microprocessor based controller (140), operating under stored computer program control and adapted to control assembly (110) in a manner which is specified by the stored program and certain environmental and measured parameters.read more
Citations
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Journal ArticleDOI
Tooling Structure: Interface between Cutting Edge and Machine Tool
Eugene I. Rivin,J. Agapiou,Christian Brecher,M. Clewett,R. Erickson,F. Huston,Y. Kadowaki,E. Lenz,Toshimichi Moriwaki,A. Pitsker,S. Shimizu,T. Schulte,M.H. Schulz,K.S. Smith,M. Tsutsumi,A.G. Ulsoy,M. Weck,K. Yokoyama +17 more
TL;DR: In this article, the authors provide a worldwide analytical survey on six important topics related to tooling structures, including the influence of machining system parameters on tool life and process stability, stiffness and damping of tools, tool/toolholder interfaces (tool clamping devices), modular tooling, tool-machine interfaces, and tool balancing for high speed machine tools.
Journal ArticleDOI
Development of the active balancing device for high-speed spindle system using influence coefficients
TL;DR: In this article, an active balancing program using influence coefficient method and active balancing device of an electro-magnetic type with both simple and reliable structures were applied to the developed high-speed spindle system.
Patent
Helicopter vibration control system and rotary force generator for canceling vibrations
TL;DR: In this paper, a rotary wing hub mounted vibration control system for a helicopter rotating hub having periodic vibrations while rotating at an operational rotation frequency is described. But the rotary hub is not attached to the helicopter, and the rotor housing cavity contains an electronics control system which receives sensor outputs and electrically controls and drives the first motor and second motor such that the first imbalance mass and the second imbalance mass are driven at a vibration canceling rotation frequency greater than the operational rotational frequency.
Patent
Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations
Mark R. Jolly,Andrew D. Meyers,Daniel Mellinger,Douglas E. Ivers,Askari Badre-Alam,Douglas A. Swanson,Russell E. Altieri +6 more
TL;DR: In this article, a rotary wing aircraft including a vehicle vibration control system was used to generate a rotating force with a controllable rotating force magnitude up to a maximum force magnitude.
Patent
Method and apparatus for balancing
TL;DR: A balancer assembly 10 which automatically provides balancer limits, which achieves a balancing state while substantially minimizing short term vibration increases and which provides for multi-plane balancer dithering is presented in this paper.
References
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Patent
Computer implemented balancer
Abstract: A centrifugal balancer is combined with a computer system programed to suggest trial weights and placement and correction weights and placement to be used in interactive menu driven balancing sequences Vibration responsive transducers provide inputs to automatic multi-gain amplifiers in a computer interface The signals produced by the amplifiers are filtered by adjustable bandpass filters which are driven to match the rotational frequency of the work piece being balanced Peak detectors rectify the output of the filters and an analog-to-digital converter processes the output of the peak detectors A counter, reset by a sensor monitoring work piece rotation, is incremented until disabled by zero crossing detectors monitoring the outputs of the filters to provide relative phase information
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Axial pole stepping motor
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Method and apparatus for the transfer of electrical power to a balancer
TL;DR: In this paper, a method and apparatus for transferring electrical power to a balancer 14 without the need for a physical connection between the balancer and the power source 16 or the controller 12 is described.
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Centrifuge construction having central stator
TL;DR: In this article, a ring-shaped centrifuge rotor is constructed from materials which are entrained by the rotating magnetic field and the rotor is driven by entrainment of the rotor with the rotating and driving magnetic field generated from the electrical windings of the stator.
Patent
Apparatus for the dynamic balancing of a rotating body
Domenico Malpezzi,Mario Pozzetti +1 more
TL;DR: In this paper, an apparatus for balancing a rotating body, in particular the grinding wheel of a grinding machine, comprises an assembly secured to the wheel and rotating with it, with masses (13, 14) having an adjustable arrangement, electrical motors (15, 16) for controlling adjusting movements of the masses, and electrical circuits with a microprocessor unit (66).