Abstract: A drilling head (1) with an axial oscillation generator, includes a mounting (2) for coupling the head to a motor for rotating the mounting about an axis, the mounting (2) having a longitudinal axis (5) coinciding with the axis of rotation of the motor, a tool holder (3), an elastically deformable element (6) for retaining the tool holder (3) in the mounting (2) and an element (7) for guiding the tool holder (3) in the mounting (2) along the longitudinal axis (5) of the mounting, wherein the mounting of the drilling head includes a controlled generator (8) of reciprocating movements in the direction of the aforementioned axis (5) positioned between the mounting (2) and the tool holder, the tool holder and the generator being connected by a longitudinal coupling member (9) suitable for damping the impacts withstood by the tool holder while enabling the transmission of the reciprocating movements.

Abstract: A machining system that includes an ultrasonic machining assembly, wherein the ultrasonic machining assembly further includes a machining tool; a collet adapted to receive the machining tool; and an ultrasonic transducer, wherein the ultrasonic transducer is operative to transmit acoustical vibrations to the machining tool; and a machining apparatus, wherein the machining apparatus is adapted to receive and secure the ultrasonic machining assembly, and wherein the machining apparatus is operative to transmit torque to the machining tool by applying rotary motion to the ultrasonic machining assembly.

Abstract: A device for use in a machining system, including an ultrasonic transducer, wherein the ultrasonic transducer is adapted to receive a tool bit; a housing adapted to be both compatible with the machining system and to receive the ultrasonic transducer, wherein the housing is operative to isolate all radial and other vibrations generated by the ultrasonic transducer except the axial vibrations transmitted to the tool bit; and a tool holder, wherein the tool holder and the top portion of the housing are mechanically coupled to one another.

Abstract: In the case of a method for chip-removing machining of workpieces (14), in particular for making bores in workpieces (14), wherein a tool (18) is put into rotation (20) relative to the workpiece (14) and the tool (18) is moved relative to the workpiece (14) with a feed motion, the tool (18) executes an oscillating motion in the direction (z) of the feed motion relative to the workpiece (14), a settable oscillation component being imparted to the feed motion through control means.

Abstract: A hand-held drilling device, and method for drilling using the device, has a housing, a transducer within the housing, with the transducer effectively operating at ultrasonic frequencies, a rotating motor component within the housing and rigid cutting end-effector rotationally connected to the rotating motor component and vibrationally connected to the transducer. The hand-held drilling device of the present invention operates at a noise level of from about 50 decibels or less.

Abstract: A printed circuit board is supported at its peripheral portion and is moved and positioned by a drive mechanism. During the drilling of a hole in the circuit board, the thrust of the drill acting upon the circuit board is born by a sliding contact surface on a stand disposed on the side of the board opposite the drill. Ultrasonic vibration is applied to the printed circuit board via the stand during the drilling operation to prevent the occurrence of expoxy smearing.

Abstract: An automatically controlled cutting machine having a reciprocating cutting blade that is translated along a cutting path through a layup of limp sheet material under computer control includes an ultrasonic transducer that establishes standing waves along the length of the blade. The reciprocating motions of the blade shift the nodes in the standing wave to different elevations within the layup so that cutting is uniform in each ply of the limp sheet material. A drill used to produce marking holes in the material is also provided with ultrasonic means and aids the drilling in penetrating through the layup during drilling operations.

Abstract: This method provides methods and apparatus for programmably regulating power provided to ultrasonically vibrate a metal-cutting tool, with power being regulated as a function of physical parameters measured during the cutting operation which are indicative of progress of the tool cutting the workpiece. The methods and apparatus regulate the power input to vibrate the tool in response to one or more sensed physical parameters to maintain the parameter(s) within preselected limits indicative of satisfactory cutting by the tool.

Abstract: An apparatus and method are provided for controlling automatic machines such as a metal cutting tool to perform predetermined operations on a work-piece. Different means are provided for sensing the workpiece as to shape, diameter or length to determine the degree of its adjustment or wear. An inspection device or probe is provided with a transducing means operable to generate signals which are indicative of workpiece dimensions and or location. The signals are analyzed by means of computing circuits which generate control signals for performing such functions such as cycle starting, correction of tool adjustment and varying the control program to permit the performance of predetermined operations on the work by the tool.

Abstract: Torsional sonic energy is generated by means of a sonic generator and coupled to an elastic member to cause torsional resonant vibration thereof. The output of the torsional resonant member is coupled through an acoustic rectifier device to a drilling bit to simultaneously provide both torsional and vertical drive components to the bit to effect a spiral "screw" type driving action thereof. The rectifier action results in unidirectional high level pulses of the resonant sonic energy to the bit, causing the bit to be driven both rotatably and downwardly in a pulsating manner.