The invention relates to a method for fine-machining a bore of a plurality of workpieces and a machine tool unit. According to said method, the workpieces are subjected to fine-hole drilling and precision finishing, preferably roller-burnishing or smoothing, a post-processing measurement is carried out and, depending on said measurement, the fine-hole drilling tool is adjusted.

An adjustable lathe mounting system for turning a work piece on a rotating lathe having a lathe bed, headstock, and a headstock spindle, where the work piece is attached to the headstock spindle. The lathe mounting system includes an adjustable base releasably attached to the slotted way of the bed via a locking plate and a pair of laterally adjustable way spacers moveable within a laterally extending slot that engage each side of the slotted way.

A rotation tool is mounted to a spindle of a machine tool. The rotation tool comprises a cutter holding portion to which blade portion is fixed and a fixing device which fixes a workpiece. The blade portion is disposed at a tip end of the cutter holding portion. The fixing device includes a movement portion formed to be movable in the interior of the cutter holding portion and a pressing device which presses the movement portion to a side toward the workpiece. The fixing device includes a shaft portion rotatably supported relative to the movement portion and a pressing portion which presses the workpiece.

A multi-axis adjustment apparatus configured to machine a workpiece includes a yoke member having a boring guide, which defines a boring axis and receives a boring element therethrough. The yoke member includes a spine cavity extending parallel to the boring axis. A spine member is partially disposed within the spine cavity, and a fixed member disposed under the spine member which extends along a lateral plane and defines a longitudinal axis. An orthogonal adjustment element operably engages the spine member and is configured to displace the yoke member, relative to the spine member and fixed member, along an orthogonal axis extending orthogonally from the lateral plane. A lateral adjustment element operably engages the fixed member and is configured to displace the spine member and yoke member, relative to the fixed member, along a direction parallel to the lateral plane. An associated method is also provided.

An adjustable drill has a drill body having a face surface with a directional feature provided therewith. At least one cartridge is mounted adjacent the face surface and selectively slidable along the directional feature to provide adjustment. At least one insert is releasably affixed in an insert pocket provided in the cartridge. In further examples, the adjustable drill may have a central cutting system in combination with the adjustable cartridge type system, wherein the central cutting system may be modular. There may also be provided a modular type of holder arrangement to provide flexibility to adapt the system for various applications.

A setting device for setting an axial position of a rotatable component having a base member, adapted to be arranged in an axially fixed manner, and at least two separate setting members, mechanically movable relative to the base member, each of which is arranged to provide a respective substantially axial movement transferrable to a respective portion of the component.

A drilling and tapping machine includes a power head assembly supported at a vertical orientation, a parallelogram arm structure including a head support and an arm base, and an arm positioning assembly coupled with the head support and the arm base support for guiding corresponding movements of the head support and the arm base support so as to ensure a vertical trajectory of the power head assembly. The machine further includes a counterweight configuration to vertically move the power head assembly via a lever. The machine further includes an operational control assembly to selectively shift the power head assembly between a drilling operation and tapping operation. Therefore, the machine is suitable to make a hole with a diameter of 0.5 to 3 mm.

A device for assisting an operator of a boring instrument having a penetrating element for penetration a work surface that includes a retention member adapted to be connected to a rotating element of the boring instrument and adapted to receive a laser and a plurality of mirrors including a beam splitting alignment mirrors that directs a laser beam in a direction parallel with a penetrating element and perpendicular to a work surface, and a depth indication mirror that reflects a light beam at an angle of less than 90 degrees from said retaining member to a location on said work surface wherein the location of the beams from the alignment beams is maintained at a fixed radial position when the retention member perpendicularly moves towards a work surface and wherein the beam is rotated defines a circle.

A work piece support rest is provided for turning a work piece on a rotating lathe having a lathe bed, headstock, and a headstock spindle, where the work piece is attached to the headstock spindle. The support rest includes an adjustable base releasably attached to the slotted way of the bed via a locking plate and a pair of laterally adjustable way spacers moveable within a laterally extending slot that engage each side of the slotted way. A multi-piece outer ring is releasably attached to the adjustable base. A plurality of roller slides are releasably and adjustably attached to the outer ring, such that each of the roller slides extends radially inwardly and has a roller disposed at an inward distal end thereof for supporting the work piece.

A drill block and a method for drilling a hole through a workpiece using the drill block. The drill block may include a mounting leg for mounting the drill block, a drilling support leg having a round hole therethrough operable to receive a drill bit during a drilling operation, and a height variability leg interposed between the mounting leg and the drilling support leg, wherein the height variability leg is adjustable to select a vertical height of the drilling support leg relative to the mounting leg.