Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially
Patent
1996-03-13
1998-09-15
Pitts, A. L.
Cutting by use of rotating axially moving tool
Tool-support with means to move tool relative to tool-support
To move radially
408153, 408179, 408181, B23B 2506
Patent
active
058070370
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a tool head for use in machine tools. More specifically, the invention is directed to a tool head having a basic body, a tool shank which extends axially beyond the basic body and can be coupled to a rotating machine spindle, having at least one slide which can be adjusted transversely with respect to the basic body axis and has a tool carrier extending beyond the end face, having a measuring device for directly measuring the adjusting path of the slide in relation to the basic body, having measuring electronics arranged in the basic body and connected to the measuring device, having an adjusting motor, preferably electric, arranged in the basic body and acting in the adjusting direction on the slide, and having a power supply device for the measuring electronics and, if appropriate, the adjusting motor.
BACKGROUND OF THE INVENTION
To be able to set the slide and the cutting tool carried by its tool carrier accurately, it is necessary to measure exactly the adjusting path of the slide. For this purpose, it is known (WO91/03345) to measure the adjusting path of the slide in relation to the basic body in a direct way, for example by an optical or capacitive path measuring system, and to evaluate the measured results externally by means of a wireless, preferably optoelectronic, data exchange. Furthermore, it is also known from this document to provide in the basic body an adjusting motor which acts in the adjusting direction on the slide and can likewise be actuated by means of a remote control. The arrangement of the adjusting motor in the tool head has not as yet been satisfactorily achieved. It presents difficulties when one considers that the rotating motions of the tool head and of the rotary motor can be superposed in an undesirable way, in particular during accelerating and braking operations, and that a compact design is desired, in particular in the case of small precision adjustment heads.
Against this background, the invention is based on the object of developing a tool head of the type specified at the beginning which ensures a compact design and trouble free operation.
The way in which this is achieved according to the invention is based on the idea that an isolation of the rotary motion of the adjusting motor and of the tool head can be accomplished in a compact design by the adjusting motor being arranged along with its substantially cylindrical motor housing in a transverse recess of the basic body, aligned transversely with respect to the basic body axis and intersecting the basic body axis, with the motor output shaft aligned parallel with respect to the transverse recess. A further improvement in this respect is accomplished if the transverse recess for receiving the adjusting motor is arranged in the basic body transversely with respect to the adjusting direction of the slide, it also being of advantage here if the path measuring system intersects the basic body axis in the adjusting direction of the slide.
To reduce the undesirable starting current peaks when starting the adjusting motor, the motor housing is clamped on the basic body in a resilient manner, axially and preferably also in the turning direction.
A particularly compact design is advantageously accomplished by the motor output shaft bearing an output gearwheel which reaches in a cup-like manner over the output end of the motor housing, is coupled to an adjusting mechanism of the slide and is advantageously mounted, preferably axially and radially, with its cup inner side on a part of the basic body which reaches axially and radially over the output end of the motor housing and has a central bore for the passing through of the output shaft. This achieves the effect that the radially outward facing teeth of the output gearwheel concentrically embrace the motor housing in the vicinity of the output end. On its cup outer side, the output gearwheel is additionally mounted in a preferably cup-shaped cover part, rigidly connected to the basic body.
An advantageous refinement of the
REFERENCES:
patent: 3198037 (1965-08-01), Yogus
patent: 3526159 (1970-09-01), Robinson et al.
patent: 3533195 (1970-10-01), Schumann et al.
patent: 3710659 (1973-01-01), Pagelia et al.
patent: 4847975 (1989-07-01), Santi
patent: 5251511 (1993-10-01), Muendlein et al.
Scheer Gerhard
Schneider Eberhardt
Komet Praezisionswerkzeuge Robert Breuning GmbH
Pitts A. L.
Tsai Henry W. H.
LandOfFree
Tool head for 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 machine-tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool head for machine-tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-81022