Other

Hines Industries, Inc.

Balance Dynamics Co.

Balance Dynamics Corporation

Raser Technologies, Inc.

Jack H Kerlin

Gordon E Hines

Brian Kent Hackett

Wayne L Winzenz

In a resonant motor system, an electrical motor having a stator with one or more windings, a rotor which may or may not be wound, and an air gap between the stator and the rotor for storing magnetic energy such that the motor exhibits a definite electrical inductance may be deployed with a drive combination including a capacitance connected in series with the inductance of the motor to form an LCR circuit therewith. Phased provision of DC power to the LCR circuit causes the circuit to oscillate, which excites the motor. The DC power is provided in synchronism with the rotation of the rotor in order to maximize torque produced by the motor.

Resonant motor system

A method and apparatus for balancing tools 16 is disclosed which may uniquely characterize a needed balance for each of the individual tools 16 and which may then store the needed balance conditions so as to use the balancing data upon every use of the individual tool 16. This balance is achieved, in one embodiment, by the movement of certain balancing objects 28 from a balance containment member 22 to cavities 26 within a balance reception member 24. Should the original balance condition falter, the apparatus and methodology of this invention allow the balance conditions to be updated, dynamically, and to be stored for later use.

Method and apparatus for tool balancing

An electric rotating machine, which can be operated as either a motor or generator, utilizes material exhibiting a Hall effect to replace the normal slip rings or mechanical commutation devices. Preferably, a slab of Hall effect material is curved to extend circumferentially around the rotor between the rotor and stator, and the rotor is adapted to create a magnetic field. When used as a motor, a source of electrical power is connected to the Hall effect material to cause a primary current to flow therein. The combination of the rotor magnetic field and the primary current flowing in the Hall effect material produces a Hall effect current which creates a torque on the rotor causing it to rotate. When used as a generator, the rotor is rotated and induces a primary current to flow in the Hall effect material. The combination of the rotor magnetic field and the induced primary current produces a Hall effect voltage and current that can be connected to power an electrical load.

DC electric rotating machine using hall effect material

A control system for the remote control of functions on a rotating object from a stationary location is disclosed. The control system, in the disclosed embodiment, constitutes a single channel, four function-select, power transmission system with an encoder at the stationary location and a decoder on the rotating object. The encoder is used to develop selected electrical waveform patterns each of which is uniquely correlated with a particular control function to be performed on the rotating object. Each waveform pattern consists of a unique pattern of electrical waveform half cycles. The particular electrical waveform pattern for the particular control function to be performed is transmitted to the rotating object via center contact assemblies which engage opposite ends of a spindle on which the rotating object is supported for rotation. The decoder circuit detects the particular electrical waveform pattern which is received on the rotating object and causes the electrical power of that waveform pattern to be used to perform the particular control function. The disclosed application of the invention is in an unbalance compensator.

Remote control system for rotary device

Balancing apparatus for performing in-process balancing of a rotary mass by capacitor discharge to deliver an arc to erode material from the mass. A capacitor bank is operatively coupled through a coupling circuit to electrode structure which delivers the arc to the mass. A trigger pulse is injected into the coupling circuit to initiate the arc discharge. The coupling circuit is so constructed and arranged as not to impair the effectiveness of the trigger pulse in initiating the arc, yet it provides no significant resistance to the high amperage capacitor discharge current which is enabled to flow to the electrodes once the gap between the electrode structure and the rotary mass has been broken down. Several embodiments of the invention are disclosed. One embodiment comprises multiple capacitor banks which are sequentially placed on-line. Associated with each capacitor bank is a 'contactless switch'. The contactless switch comprises a pair of contacts, preferably graphite blocks, having confronting faces forming a gap between them. A branch circuit shunts this gap and is selectively operable to selectively allow and disallow the gap to be broken down by the same trigger pulse that initiates the arc and in this way selectively allow and disallow the capacitor from discharging. When a capacitor bank is off-line it is recharged.

Rotary balancing apparatus

A drill press mounting apparatus for use on a balancing machine having a longitudinally extending machine bed is disclosed. The drill press assembly is comprised of a first longitudinally extending guide path defined adjacent the machine bed and a second longitudinally extending guide path defined adjacent the machine bed parallel to the first guide path. A drill press is mounted for movement along the first and second guide paths and a friction stop is operatively connected between the drill press and the machine bed. The friction stop retards movement of the drill press with respect to the machine bed upon commencement of drill press operations.

Drill press mounting apparatus for balancing machine

An unbalance correction system is disclosed for balancing a workpiece while it rotates in a conventional balancing machine. Stock removal occurs simultaneously with unbalance measurement. State of balance is continuously monitored while correction proceeds. The trial and error aspect in conventional methods of alternating between measurement and correction operations is eliminated, resulting in a higher precision balance in reduced procedure time. Stock is removed by discharging capacitors across a gap formed between the spinning workpiece and stationary electrodes. The momentary high-current arc melts and vaporizes material during only a portion of a total revolution. The discharge is triggered by a vibration induced signal from the balancing machine when the heavy spot is adjacent the electrodes.

Electric arc unbalance correction system

An improved unbalance compensator control in which the distribution of balance mass fluid is controlled by selective activation of thermal devices creating thermal differentials and ensuing balance mass fluid re-distribution for balance correction, and in which electrical power for the thermal devices is transmitted across an air gap separating stationary and rotating portions by means of the selective energizing of primary coils each of which has a corresponding confronting secondary coil associated therewith. Different geometries of coils are disclosed. In another embodiment a composite waveform containing power and signal components is conducted to the rotating portion by electro-mechanical contact arrangements at opposite axial ends of the machine on which the unbalance compensator is mounted.

Unbalance compensator control

A dynamic balancing system for rotary elements wherein balance is maintained by remote control of mass distribution during rotation. A fluid balancing mass partially fills three or more annular chambers. A change in mass distribution is achieved by heating the fluid in a chamber and conducting the vapor so produced to the opposite chamber(s) where the vapor condenses. A warmer chamber thereby loses mass to a cooler chamber. Electronic vibration measuring means and control are generally employed to determine which chambers and what degree of heating are required to improve the state of balance. The preferred control is electronic and comprises a stationarily mounted encoding portion and rotationally mounted decoding portion. Power and encoded control signals are transmitted via inductively coupled coils from the encoding portion to the decoding portion.

Unbalance compensator

A hard bearing cradle balancing machine involving novel elements for workpiece support and end thrust restraint, angle of unbalance indication and machine mounted drill press slide. 'V' block bearings incorporating independently tilting pads provide uniform journal contact without torsional restraint that would otherwise result from workpiece misalignment. A device magnetically attached to the end of the workpiece maintains axial positioning thereof and communicates rotational position and speed information to an electronic vibration analyzer, as well as rotational reference information to the machine operator. A balancer mounted drill press slide freely traverses the workpiece axis, locking up only upon application of drilling pressure at any point thereon.

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Ann Arbor, MI, United States of America

Jack H Kerlin