Patent DE-102011002663-A1 (DE)
Title: Milling tool for machining electrode tip of spot welding electrodes, comprises a tool body in milling operation rotatable around a rotational axis with first and second axial sides, where a cutting element is locked at the tool body
Inventor: HEPTNER HARALD
IPC: B23K11/30
Filed: 2011-01-13
Abstract: The milling tool comprises a tool body (16) in milling operation rotatable around a rotational axis with a first axial side (18) and a second axial side (20), where one of the axial sides of centered depression (22) concerning the rotational axis is provided for introducing an object to be shaped, and a cutting element (30) is locked at the tool body. The cutting element comprises a cutting edge in association with the depression. A recording recess is provided in the tool body standing in connection with the depression. The milling tool comprises a tool body (16) in milling operation rotatable around a rotational axis with a first axial side (18) and a second axial side (20), where one of the axial sides of centered depression (22) concerning the rotational axis is provided for introducing an object to be shaped, and a cutting element (30) is locked at the tool body. The cutting element comprises a cutting edge in association with the depression. A recording recess is provided in the tool body standing in connection with the depression, and is received at the tool body locked with the cutting element, which comprises a first engaging projection positioned in a rotational axis to a first longitudinal end region and a second engaging projection positioned in the rotational axis to a second longitudinal end region. A first engagement hole is provided in a rotational axis, and radially opens an inner area of the tool body in association with the first engaging projection to the recording recess. A second engagement hole is provided in a rotational axis, and radially opens an outer area of the tool body in association with the second engaging projection to the recording recess. The cutting element is not pivotable with the first engaging projection intervening in the first engagement hole and with second engaging projection decisive in the second engagement hole for canceling and preparing an alignment of the second engaging projection with the second engagement hole. The second engaging projection is aligned with the second engagement hole for canceling and preparing an intervention of second engaging projection into the second engagement hole. The cutting element is displaceable with the first engaging projection between a locking preparation shift position and a locking shift position intervening in the first engagement hole. The first engaging projection engages in a maximal extent with the first engagement hole in the locking preparation shift position and the locking shift position. The second engaging projection: not engages with the second engagement hole; and engages in the maximal Extent with the second engagement hole. The cutting element in the locking shift position is provided with a counter plant range in an area of the second longitudinal end region in a plant at a plant range of the tool body. A breadth of the first engagement hole and/or the second engagement hole corresponds to a thickness of the cutting element between two side surfaces. The first engaging projection comprises two side edge ranges diverging toward a free end. One of the side edge ranges continues a first side surface of the cutting element, and other one of the side edge ranges is carried back concerning a second side surface of the cutting element and approaches itself toward the free end to a level of second side surface. The recording recess comprises a swivel recess range and a sliding recess range, where the cutting element of the first engaging projection positioned with the swivel recess range in and outer intervention with the first engagement hole is bringable. The cutting element is pivotable with first engaging projection intervening in the first engagement hole and from the sliding recess range. The cutting element of the second engaging projection positioned in the sliding recess range is bringable by displacing the cutting element in and the outer intervention with the second engagement hole. The first and second engagement holes comprise a common longitudinal center line. A locking organ: is provided for locking the cutting element at the tool body; affects the first engaging projection for locking the cutting element; is received in locking organ aperture subsequently to the first engagement hole; and comprises an external thread. The locking organ aperture is partially formed with an internal thread. A height of the first engagement hole toward the rotational axis corresponds to a height of first intervention projection and/or a height of the second engagement hole toward the rotational axis corresponds to a height of second engaging projection. The tool body is made of steel material and/or the cutting element is made of sintered hard metal. The cutting element is coated with a for physical vapor deposition-coating.