The invention relates to a method for producing a rod- or pipe-shaped connecting element (100, 100′) having an end face (106) from a semi-finished connecting element (102) made of metal, in particular of a drill or chisel insertion end which is secured in an axially movable manner in a chuck of a hammer drill, a semi-finished connecting element (102) is provided, characterized in that at least one radially movable forming body (206) guided in the recesses (204) of a die (202) for forming at least one longitudinal groove (122, 124) closed on both sides in the semi-finished connecting element (102) has a smaller longitudinal extension (LR) than a planned length (L) of the longitudinal groove (122, 124) and that the forming of the at least one longitudinal groove (122, 124) closed on both sides in the semi-finished connecting element (102) is performed by radially applying the at least one forming body (206) and by subsequently axially shifting the semi-finished connecting element (102) in a longitudinal die opening (214) of the die (202).

An impact tool head is provided and configured to be disposed on a front end of an impact tool. The impact tool head includes: a rod body and a flange radially protruding from the rod body. The flange includes an inclined surface facing toward the front end and an outermost peripheral edge. A contact position is defined as a position where the inclined surface contact with at least one projection of the impact tool. Wherein each of the at least one projection is a ball member, and as viewed in the axial direction, a ratio of a distance between the contact position and the outermost peripheral edge to a radius of the at least one projection is between 0.1 and 0.6.

Chisel, in particular for a jackhammer, wherein the chisel has a free shank via which the chisel can be inserted along a working axis into an insertion sleeve of a tool fitting, wherein the free shank has a hexagonal cross section at least in certain portions, and wherein at least one guide segment, which modifies the hexagonal cross section and extends along the working axis, is formed on a surface of the free shank.

An impact tool head is provided and configured to be disposed on a front end of an impact tool. The impact tool head includes: a rod body and a flange radially protruding from the rod body. The flange includes an inclined flat surface facing toward the front end and an outermost peripheral edge. A contact position is defined as a position where the inclined flat surface contact with at least one projection of the impact tool. Wherein each of the at least one projection is a ball member, and as viewed in the axial direction, a ratio of a distance between the contact position and the outermost peripheral edge to a radius of the at least one projection is between 0.1 and 0.6.

A tool bit for use with a power tool having a chuck and an anvil includes a first end, a second end opposite the first end, a body defining the first end of the tool bit, and a shank coupled to the body and defining the second end of the tool bit. The shank includes a slot formed through the second end. The slot is configured to receive a portion of the chuck to transfer rotational movement from the power tool to the tool bit. The shank also includes a ball detent spaced circumferentially from the slot. The ball detent is configured to receive a locking sphere of the chuck to lock the tool bit with the chuck. The slot is sized to limit insertion of the shank into the chuck, thereby providing a space between the second end of the tool bit and the anvil.

An impact tool head assembling mechanism is provided, including: an engaging sleeve, disposed on a front end of an impact tool, including a tubular wall and at least one projection, the tubular wall defining an axial direction, the at least one projection being protrudingly and retractably disposed on an inner wall of the tubular wall; an impact tool head, including a rod body and a flange which includes an inclined surface facing toward the front end and an outermost peripheral edge, a contact position being defined as a position where the inclined surface contact with the at least one projection; wherein a reference plane is defined as passing through the outermost peripheral edge and perpendicular to the axial direction, and an included angle between a line from the contact position to the outermost peripheral edge and the reference plane is between 25 and 65 degrees.

An impact tool head is provided, configured to be disposed on an impact tool, the impact tool head including: a rod body and a flange radially protruding from the rod body, the rod body including a working end portion, the flange including an inclined surface facing toward the working end portion and an outermost peripheral edge, a contact position being defined as a position where the inclined surface configured to be contact with at least one projection of the impact tool; wherein as viewed along the axial direction, a distance between the contact position and the outermost peripheral edge is larger than or equal to 0.5 mm.

An impact tool head assembling mechanism is provided, including: an engaging sleeve, disposed on a front end of an impact tool, including a tubular wall and at least one projection, the tubular wall defining an axial direction, the at least one projection being protrudingly and retractably disposed on an inner wall of the tubular wall; an impact tool head, including a rod body and a flange which includes an inclined surface facing toward the front end and an outermost peripheral edge, a contact position being defined as a position where the inclined surface contact with the at least one projection; wherein a reference plane is defined as passing through the outermost peripheral edge and perpendicular to the axial direction, and an included angle between a line from the contact position to the outermost peripheral edge and the reference plane is between 25 and 65 degrees.

The invention relates to a method for producing a rod- or pipe-shaped connecting element (100, 100) having an end face (106) from a semi-finished connecting element (102) made of metal, in particular of a drill or chisel insertion end which is secured in an axially movable manner in a chuck of a hammer drill, a semi-finished connecting element (102) is provided, characterized in that at least one radially movable forming body (206) guided in the recesses (204) of a die (202) for forming at least one longitudinal groove (122, 124) closed on both sides in the semi-finished connecting element (102) has a smaller longitudinal extension (LR) than a planned length (L) of the longitudinal groove (122, 124) and that the forming of the at least one longitudinal groove (122, 124) closed on both sides in the semi-finished connecting element (102) is performed by radially applying the at least one forming body (206) and by subsequently axially shifting the semi-finished connecting element (102) in a longitudinal die opening (214) of the die (202).

A hand tool impacting device may include, a drive shaft with an aperture, an impaler disk, and a floating pin positioned within the aperture of the drive shaft. A set of circular ramps on the outer edge of the impaler disk may interact with a stationary pin insert to translate the drive shaft and create an impacting motion. A pair of springs placed against either side of the floating pin may allow a specialized tool bit to engage or disengage the impaler disk, thereby allowing selective use of translational impacting motion, or rotational torque. An impact bit for engaging the impaler disk may include, a tool head configured to engage a work piece and a tool shaft configured to be inserted into a hollow drive shaft to engage a floating pin. According to one embodiment, the impact bit includes a number of sleeves to guide the tool head during operation.