Tool holder for inserted tools in drilling and/or hammering machines

Tool holder for tools inserted into machines for an operation selected from the group consisting of drilling operation, percussion operation and both having an axial receptacle bore (20) and means for the rotational driving and axial locking of a tool shank which can be inserted into a tool receptacle of the respective machine, wherein a plurality of axial strips (13) which project inward are provided for the rotational driving and at least one radially lockable locking body (14) is provided at the tool holder (10) for locking, a plurality of axial grooves (16) are arranged at the circumference of the receptacle bore (12), and in that the axial strips (13) which are located opposite from one another and project inward are guided radially in the tool receptacle (10), such that they can be released outward in a springing manner, to enable optional insertion of a tool shank (19) with longitudinal grooves (10) which are located opposite one another and which have a smaller outer diameter, and of a tool shank (18) having the same core diameter but with outwardly projecting longitudinal ridges (17) with a greater outer diameter, wherein, for the purpose of rotational driving, the axial strips (13) cooperate with the corresponding longitudinal grooves (20) and the axial grooves (16) cooperate with the corresponding longitudinal ridges (17) of the respective inserted grooved shank (18, 19), each of the rotational driving jaws (28) has, at its front end, a bevel (35) which is directed inward conically, the rotational driving jaws (28) being displaceable radially outward over the bevel (35) by the longitudinal ridges (17) of a tool shank (18) with the larger outer diameter.

Tool holder for tools inserted into machines for an operation selected from the group consisting of drilling operation, percussion operation and both, having an axial receptacle bore (20) and means for the rotational driving and axial locking of a tool shank which can be inserted into a tool receptacle of the respective machine, wherein a plurality of axial strips (13) which project inward are provided for the rotational driving and at least one radially lockable locking body (14) is provided at the tool holder (10) for locking, a plurality of axial grooves (16) are arranged at the circumference of the receptacle bore (12), and in that the axial strips (13) which are located opposite from one another and project inward are guided radially in the tool receptacle (10), such that they can be released outward in a springing manner, to enable optional insertion of a tool shank (19) with longitudinal grooves (10) which are located opposite one another and which have a smaller outer diameter and of a tool shank (18) having the same core diameter, but with outwardly projecting longitudinal ridges (17) with a greater outer diameter, wherein, for the purpose of rotational driving, the axial strips (13) cooperate with the corresponding longitudinal grooves (20) and the axial grooves (16) cooperate with the corresponding longitudinal ridges (17) of the respective inserted grooved shank (18, 19).

Tool holder for tools inserted into machines for an operation selected from the group consisting of drilling operation, percussion operation and both having an axial receptacle bore (20) and means for the rotational driving and axial locking of a tool shank which can be inserted into a tool receptacle of the respective machine, wherein a plurality of axial strips (13) which project inward are provided for the rotational driving and at least one radially lockable locking body (14) is provided at the tool holder (10) for locking, a plurality of axial grooves (16) are arranged at the circumference of the receptacle bore (12), and in that the axial strips (13) which are located opposite from one another and project inward are guided radially in the tool receptacle (10), such that they can be released outward in a springing manner, to enable optional insertion of a tool shank (19) with longitudinal grooves (10) which are located opposite one another and which have a smaller outer diameter, and of a tool shank (18) having the same core diameter but with outwardly projecting longitudinal ridges (17) with a greater outer diameter, wherein, for the purpose of rotational driving, the axial strips (13) cooperate with the corresponding longitudinal grooves (20) and the axial grooves (16) cooperate with the corresponding longitudinal ridges (17) of the respective inserted grooved shank (18, 19), at least one locking body (14, 15) is provided at an axial distance from the other respective locking body (14, 15) for axial locking of the two different tool shanks (18, 19), wherein the locking bodies (14, 15) can be radially unlocked jointly by axial displacement of an outer actuating sleeve (23).