A high frequency vibration spindle system which includes a spindle having a spindle housing and a spindle shaft disposed in the spindle housing; a toolholder, engaged with the spindle and adapted to be engaged with a tool; an electric power transmission device disposed at the front end or a rear end of the spindle, including a first coil and a second coil; the first coil is disposed on the spindle housing, and the second coil is disposed on the spindle shaft to be rotated with the spindle shaft coaxially; the first coil and the second coil are spaced with a gap; the second coil is adapted to receive an electric power from the first coil with a non-contact induction method; and a transducer, adapted to be controlled to vibrate the tool and disposed in the toolholder and electrically connected with the second coil to receive the electric power.

A method can include vibrating a hard turning tool, and contacting the hard turning tool to a spinning work piece while vibrating the hard turning tool to remove material from the spinning work piece. The method can further include moving the tool in an axial direction and/or radial direction relative to the work piece.

An elongated tool holder includes a tool anti-vibration component having a component housing portion and an anti-vibration arrangement. The anti-vibration arrangement includes an enclosed interior component cavity formed in the component housing portion. The anti-vibration arrangement also includes a vibration absorber portion disposed within the component cavity that is integrally formed with the component housing portion to have unitary one-piece construction therewith. The vibration absorber portion includes a vibration absorbing mass and at least one elastic suspension member through which the vibration absorbing mass is connected to the component housing portion. The component cavity includes an oscillating space located between an inner surface of the component housing portion and the vibration absorber portion. The vibration absorbing mass is configured to oscillate within the oscillating space upon elastic deformation of the at least one suspension member. A cutting tool is provided with the tool holder.

A display device includes a position information acquisition part, a rotation information acquisition part, a first waveform generation part, a second waveform generation part, and a waveform display part, which displays plural second waveform data. The position information acquisition part acquires position information of a feed axis. The rotation information acquisition part acquires the rotation speed of a workpiece as rotation information of a spindle. The first waveform generation part generates first waveform data representing a change of the position information over time from time series position information of the feed axis. The second waveform generation part generates plural second waveform data by obtaining a time per rotation from the rotation speed, dividing the first waveform data into partial waveform data for time per rotation, and sequentially shifting each partial waveform data in the time axis direction so as to match a start point of the first waveform data.

An elongated tool holder includes a tool anti-vibration component having a component housing portion and an anti-vibration arrangement. The anti-vibration arrangement includes an enclosed interior component cavity formed in the component housing portion. The anti-vibration arrangement also includes a vibration absorber portion disposed within the component cavity that is integrally formed with the component housing portion to have unitary one-piece construction therewith. The vibration absorber portion includes a vibration absorbing mass and at least one elastic suspension member through which the vibration absorbing mass is connected to the component housing portion. The component cavity includes an oscillating space located between an inner surface of the component housing portion and the vibration absorber portion. The vibration absorbing mass is configured to oscillate within the oscillating space upon elastic deformation of the at least one suspension member. A cutting tool is provided with the tool holder.

A vibration-cutting condition setting device capable of facilitating a selection of a tool and a setting of parameters. The vibration-cutting condition setting device for a machine tool includes a display unit and a control unit. The control unit accepts a setting for controlling an object to be fed with an vibration. The setting includes a feed speed without the vibration (F) of the object, a first parameter (A) regarding a cycle of the vibration, and a second parameter (E) regarding an amplitude of the vibration. The control unit calculates a maximum feed speed (Fmax) of the object according to the feed speed without the vibration (F), the first parameter (A), and the second parameter (E) and then displays a value representing the calculated maximum feed speed (Fmax) on the display unit.

A powder production method includes providing an elongated workpiece and repeatedly contacting an outer surface of the elongated workpiece with a reciprocating cutter according to a predetermined at least one frequency to produce a powder. The powder includes a plurality of particles, wherein at least 95% of the produced particles have a diameter or maximum dimension ranging from about 10 ?m to about 200 ?m. A system for producing powders having a plurality of particles including a cutter and at least one controller is also provided herein.

A micromachining method, a die manufacturing method, and a micromachining apparatus performing accurate micromachining on a surface of a workpiece at high speed. A micromachining apparatus having a cutting tool and a vibration unit for vibrating the cutting tool in a first direction is used. The angle formed between an average cutting direction of the cutting tool and the first direction is set to fall within a range of 20 to 120. Recesses and protrusions are formed on a surface of a workpiece as a result of machining by the cutting tool which is vibrating in the first direction.

A fly-cutting system is disclosed, and in particular one that comprises a dynamically-controllable actuator for controlling the position, orientation, or both position and orientation of a cutting element carried by a fly-cutting head. In certain embodiments, the actuator can adjust the position or orientation of a cutting element, or both, hundreds or thousands of times per second, enabling precise control over the shape of features formed by the cutting element in a surface of a workpiece.

An example method includes performing a machining operation by providing linear movement of a tool along a feed axis relative to a workpiece while superimposing oscillation of the tool onto the feed axis and providing rotation of the tool relative to the workpiece. During an optimization mode, the machining operation is performed on a first workpiece portion while providing the linear movement at an initial feed velocity, and sequentially superimposing the oscillating at a plurality of different frequencies. An optimal oscillation frequency is determined from the plurality of different frequencies which causes the tool to apply less force to the first workpiece portion at the initial feed velocity than others of the frequencies. During a run mode, the machining operation is performed on a second workpiece portion having a same composition as the first workpiece portion while superimposing the oscillation at the optimal oscillation frequency.