Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Adjustable – tool-guiding jig
Patent
1998-10-08
2000-06-20
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Adjustable, tool-guiding jig
408 72R, B23B 4728
Patent
active
060770015
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a drilling device for doors, flaps or lids or the like. Such a drilling device is known.
Such drilling devices are used to enable mounting commercially available hinges that have a cup-shaped central body and two fastening arms adjoining them, the arms being drilled and each serving to receive a respective fastening screw that fixes the hinge to the door or the like.
In commercially available hinges, however, the problem of the variable design arises, with the effect that beginning at one edge of a door, the location of the main bore that receives the cup-shaped central body must be arranged in various ways. This is done by means of a stop adjustment that uses adjusting eccentric elements; known drilling devices are equipped with such a stop adjuster.
However, this does not solve a further problem, which is that in commercially available hinges the fastening arms can also be disposed in various ways with regard to the cup-shaped central body. The holes for screwing in the fastening screws for the hinge must therefore be especially drilled for various hinge shapes, this is time-consuming, inconvenient, and expensive.
The object of the invention is to overcome this disadvantage and to create a drilling device of the type defined at the outset which not only allows adjusting the location of the main bore that receives cup-shaped central body but also allows taking the various hinge designs into account, so that both the main bore and the screw holes for the hinge fastening screws can be made in a single operation. The time expenditure and expense should be reduced, and the work sequence should be simplified.
This object is attained in accordance with the invention by the characteristics of the main claim. Advantageous further features of the subject of claim 1 will become apparent from the characteristics of the dependent claims and from the specification and the drawing.
DRAWING
One exemplary embodiment of the invention is shown in the drawing and described in further detail in the ensuing description. Shown are:
FIG. 1, a front view of the drilling device;
FIG. 2, a view of the drilling device from above;
FIG. 3, a view of the drilling device from below;
FIG. 4, a front view of a tool guide carrier in section;
FIG. 5, a view of the carrier from above;
FIG. 6, a stop rod for the drilling device;
FIG. 7, a drilling aid; and
FIG. 8, a variant of the drilling aid of FIG. 7 in side view and back view.
DESCRIPTION OF THE EXEMPLARY EMBODIMENT
A drilling device 1 has a base plate 2 and a mounting plate 3, which is connected to the base plate 2 via four screws 4 (see FIG. 3).
The base plate 2 is provided with two bores 5, spaced apart by a relatively great distance, which are intended to receive two lever-actuated adjusting eccentrics 6. To monitor the setting of the adjusting eccentrics 6 at any time, each bore 5 is completed with a monitoring window 7. Provided between the two adjusting eccentrics 6 on the base plate 2 is a cylindrical protrusion 8 with a receiving bore 9, which is intended to receive a chucking device, not shown, of the drilling device 1.
On its long side opposite the receiving bore 9, the base plate 2 is provided with an adjusting notch 10, with which the correct alignment of the drilling device 1 with the workpiece to be machined can be monitored.
The mounting plate 3 secured to the base plate 2 has a central tool guide bush 11 in its middle for a miller-like drilling tool, not shown. Secured to a shaft 12 of the drilling tool is a cuff 13, which on the one hand serves as a bearing face for a restoring spring 14 but on the other also defines a working stroke of the drilling tool toward the bottom, by striking the mounting plate 3 when the restoring spring 14 is compressed. The cuff 13 is adjustable on the shaft 12 in order to vary the working stroke of the drilling tool. On its top, the cuff 13 has a polygonal recess 15 for engagement by a corresponding polygonal pin, which can be connected for drive purposes to a drill spindle of a drilling machine. However, the
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Howell Daniel W.
Johann Eberhard GmbH
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