Turning – Radially moving rotating tool inside bore
Patent
1998-11-02
2000-10-24
Tsai, Henry W. H.
Turning
Radially moving rotating tool inside bore
82 72, 82 79, 82100, 82118, 82119, B23B 326
Patent
active
061349968
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention is related to a tool head for use in machine tools, comprising a base body, a tool shank which is adapted to be coupled to a machine spindle and which protrudes axially over the base body, at least one working slide which is adapted to be displaced essentially transversely with respect to a base body axis and which has a tool holding fixture which protrudes over a front face thereof, and an electrical adjusting motor which is disposed in the base body and which acts upon the working slide in the direction of displacement by means of transmission means.
BACKGROUND OF THE INVENTION
A tool head of this type is known (DE-A-4330822), in which the adjusting motor with its essentially cylindrical motor housing is disposed in a transverse recess of the base body, which recess is aligned transversely with respect to the base body axis and intersects the base body axis, the driven shaft of the motor being aligned in parallel to the transverse recess. Transmission means are provided for driving the working slide, which comprise a gearwheel which is disposed on the driven shaft of the motor, a drive sprocket which meshes with the gearwheel, and a threaded spindle rigidly connected thereto. A sliding block having a slanted toothing is guided on the threaded spindle, which slanted toothing meshes with a complementary slanted toothing of a counterpart disposed on the slide. The transmission means are in this instance disposed eccentrically in the base body. An annular coil housing is disposed at the side of the tool shank, in which there is located a secondary coil with corresponding stabilizing electronics, which coil is part of an inductive transmission path of a power supply device for the adjusting motor and the electronic circuits which are located in the tool head. In principle, it is possible to also use the induction path also for bidirectional data transmission, wherein the data signals are modulated onto the induction current. The primary coil of the inductive transmission path is disposed in a coil housing on the machine side, which extends radially outward of the tool shank into the free space between the face of the machine spindle and the face of the coil housing on the tool head side. The centrifugal force-free arrangement of the adjusting motor and the transmission has hitherto not been adequately solved. Furthermore, the construction size and the assembly and servicing possibilities of the known tool head are not satisfactory.
Based on this, the object of the invention is to develop a tool head of the type described above, which makes an assembly and servicing friendly yet compact construction possible and ensures a vibration-free operation.
SUMMARY OF THE INVENTION
The solution according to the invention is based foremost on the idea that the transmission means comprise an output shaft which is adapted to be rotated concentrically with respect to the base body axis, which output shaft carries a drive sprocket which meshes with toothing on the side of the working slide. Advantageously, the toothing on the side of the working slide is rigidly connected to the working slide.
According to a further variant of the invention, it is provided that the toothing on the side of the working slide is disposed on an intermediate transmission element which is linearly guided in the base body and which in turn is coupled to the working slide by means of a wedge gear or an intermediate gearwheel. In this, the wedge gear may be formed by complementary, meshing slanted toothings which are disposed at the intermediate transmission element and at the working slide. With this embodiment a self-locking effect is attained and free play is avoided, which makes it possible to cut the power to the adjusting motor during each driving pause or to turn it off.
The working slide is advantageously guided in a linear guide, while the toothing is formed by a tooth rack which meshes with the drive sprocket. In order to compensate internal centrifugal forces, it is of advantage when an additiona
REFERENCES:
patent: 2521619 (1950-09-01), Weld
patent: 3311003 (1967-03-01), Daugherty
patent: 3710659 (1973-01-01), Bohner et al.
patent: 3824883 (1974-07-01), Wloszek
patent: 5120167 (1992-06-01), Simpson
patent: 5251511 (1993-10-01), Muendlein et al.
patent: 5388487 (1995-02-01), Danielsen
patent: 5836727 (1998-11-01), Scheer
Feil Erich
Hoerl Roland
Scheer Gerhard
Komet Praezisionswerkzeuge Robert Breuning GmbH
Tsai Henry W. H.
LandOfFree
Tool head for use in machine tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tool head for use in machine tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool head for use in machine tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1952906