Cutting by use of rotating axially moving tool – Convertible cutting means – Utilizing common cutting tool
Patent
1984-05-15
1986-05-20
Meister, James M.
Cutting by use of rotating axially moving tool
Convertible cutting means
Utilizing common cutting tool
408 22, 408224, 408238, 408714, 279 5, B23B 5110, B23B 3104
Patent
active
045898057
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a boring and deburring head for fastening of a boring and deburring tool, to a boring and deburring tool capable of being fastened in such a boring and deburring head, to a combination of boring and deburring head and tool, and to a method for boring and deburring a workpiece. The head has a clamping device with a clamping cone and a conical clamping wedge, the clamping device being connected in a twist-free manner with a drive element that can be coupled with a rotationally driven bore spindle or the like, i.e., the clamping device is connected to the drive element so that relative rotation between the two is prevented. The tool is in the form of a spiral drill having front radial main cutting edges and helically extending secondary cutting edges.
When bores are made in workpieces, it is necessary in a first operation to make the bore itself, for instance by means of a spiral drill, and then in a second and possibly even a third operation to debur the outer as well as the inner rim of the bore, for instance by means of a countersink tool or a deburring brush. This is relatively expensive, not only in terms of the tool but also of the time required to retool or to move the workpiece or tool in multiple-spindle automatic boring machines.
It is the object of the present invention to devise a boring and deburring head/and or a boring and deburring tool capable of being fastened therein, and a method for boring and deburring a workpiece, each as generally described above with which the boring and deburring can be performed in a single operation, that is, without changing tools and/or the position of the boring spindle or the workpiece.
This object is attained, in a boring and deburring head, a boring and deburring tool, a combination of a boring and deburring head and tool, and a method of the above-described types, by holding the clamping device in such a manner that it is shiftable in terms of its longitudinal axis with respect to the axis of rotation of the drive element, and by holding the clamping cone with its rear area movably in a cup-shaped area of the drive element, preferably in that the rear area of the clamping cone has a spherical circumferential face which is inserted without substantial radial play into an inner cylindrical face of the cup-shaped area of the drive element.
Because of the shiftable disposition of the clamping device of the boring and deburring head, it is possible, after the bore has been made, to debur both rims of the bore immediately thereafter, in the same operation, or to provide them with a chamfer. This is accomplished particularly in that first the bore itself is made with the aid of the drill and then, when the just-drilled or bored workpiece is disposed directly between the two cutting flanks of the deburring groove, the clamping device holding the boring and deburring tool is briefly shifted, during the rotation, in a direction in which the deburring groove moves in the direction of the bore rims. During this merely pulse-like shifting of the clamping device, the bore rims are deburred by the cutting flanks. Once the shifting is terminated, the boring and deburring tool can be retracted back out of the bore, the making of which is now complete.
It is possible to shift the clamping device holding the boring and deburring tool parallel to the axis of rotation of the drive element and to return it back in the same direction. However, according to a preferred exemplary embodiment of the present invention, the longitudinal axis of the clamping device is pivoted, relative to the axis of rotation of the drive element, about an area remote from the tip of the boring and deburring tool. This simple movement is preferably made possible in that the clamping cone of the clamping device is held, with its rearward area having a spherical surface, in a movable manner in a cup-shaped area of the drive element.
The drive of this pivoting movement of the clamping device may be mechanical, via a contoured surface, or electromagnetic or the like, by way o
REFERENCES:
patent: 1308681 (1919-07-01), Prideaux
patent: 1471866 (1923-10-01), Simpson
patent: 2764767 (1956-10-01), Adlaf
patent: 2969000 (1961-01-01), Grobecker
patent: 3261236 (1966-07-01), Flannery
patent: 3594537 (1971-07-01), Morgenegg
patent: 3692321 (1972-09-01), Shattuck
Kadia-Diamant Maschinen- und Werkzeugfabrik O. Kopp GmbH & Co.
Knoble John L.
Meister James M.
LandOfFree
Boring and deburring head and boring and deburring tool capable does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Boring and deburring head and boring and deburring tool capable , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boring and deburring head and boring and deburring tool capable will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2106199