Tool head for use in machine tools

A tool head (10) for use in machine tools having a base body (12) which can be rotated about a rotational axis (28) and having a slide (14) which can be displaced via a pull rod (30), oriented axially in the base body (12), and can be fitted with at least one tool or a tool holder, it being possible for at least one adjustable toothed plate (36, 38) to be fixed on the slide (14), which adjustable toothed plate (36, 38) has a helical toothing system (42, 44) which acts as gear means for the engagement of a helical toothing system (44, 48), complementary with respect to it, of the pull rod (30), and the slide (14) comprising an adjusting device (66) for moving the at least one toothed plate (36, 38) with its helical toothing system (42, 44) into the helical toothing system (44, 48), complementary with respect to it, of the pull rod (30), characterized in that the adjusting device has an adjusting screw (66) which is received in the slide and by means of which a movably arranged adjusting wedge (70) can be displaced, which adjusting wedge (70) acts on a wedge face (72) which is formed on the at least one toothed plate (36).

A tool head (10) for use in machine tools having a base body (12) which can be rotated about a rotational axis (28) and having a slide (14) which can be displaced via a pull rod (30), oriented axially in the base body (12), and can be fitted with at least one tool or a tool holder, it being possible for at least one adjustable toothed plate (36, 38) to be fixed on the slide (14), which adjustable toothed plate (36, 38) has a helical toothing system (42, 44) which acts as gear means for the engagement of a helical toothing system (44, 48), complementary with respect to it, of the pull rod (30), and the slide (14) comprising an adjusting device (66) for moving the at least one toothed plate (36, 38) with its helical toothing system (42, 44) into the helical toothing system (44, 48), complementary with respect to it, of the pull rod (30), characterized in that a spring means (98, 106) which loads the at least one toothed plate (36, 38) with force is provided, in order to press the helical toothing system (42, 44) of the at least one toothed plate (36, 38) into the helical toothing system (44, 48), complementary with respect to it, of the pull rod (30).

A method for compensating for an undesirable play of toothing system and pull rod in a tool head (10) which is configured as claimed in one of the abovementioned claims, in which method, in a first step, the at least one toothed plate (36, 38) is detached from the slide (14), in which method, in a second step, the toothed plate (36, 38) is placed onto the slide (14) in a positively locking manner, in which method, in a third step, the toothed plate (36, 38) on the slide (14) is loaded with adjusting force via an adjusting device (66, 67), in order to press the helical toothing systems (42, 44) into the helical toothing system (44, 48), complementary with respect to them, of the pull rod (30), in which method, in a fourth step, the toothed plate (36, 38) is fixed on the slide (14) in such a way that the toothed plate (36, 38) is fixed to the slide (14) in a non-positive manner, and in which method, in a fifth step, the toothed plate (36, 38) is loaded against the slide (14) with adjusting force via the adjusting device (66, 63), in order to fix the toothed plate (36, 38) to the slide (14) in a positively locking manner.