Woodworking – Work guide – Vertical spindle
Patent
1994-08-15
1996-09-17
Bray, W. Donald
Woodworking
Work guide
Vertical spindle
403374, 1441352, 1442512, 1442521, 1442531, B27C 504, F16B 204, B27G 2100, B27B 3100
Patent
active
055559212
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is directed to a stop strip with a clamping member for vertically adjustable fastening in a vertical groove with a C-shaped cross section in a protective hood for wood shaping machines. The clamping member has a die with a mushroom-shaped head and can be clamped in the vertical groove by an adjusting screw.
Protective hoods are known for covering a cutting tool of wood shaping machines which is fastened to a spindle. These protective hoods are formed by two side walls connected by a rear wall, a vertically adjustable front protective shield, and a cover in which is provided a connection opening for a suction device. Vertical slots which serve to receive a stop strip or the like in a vertically adjustable manner are incorporated in the front edges of the side walls.
A stop strip of the type outlined above is described and shown in DE-OS 39 31 141. In this stop strip, the clamping member is a clamping piece that is held at an angle piece by means of a screw. The shape of the clamping piece is not described. After loosening the screw, the height of the angle piece can be adjusted, for which purpose the clamping piece slides within the C-shaped slot. When the desired height is reached, the screw must be tightened. Since this screw is located on the inside area of the protective hood, it is relatively difficult to reach and can only be adjusted after removing a transparent protective shield. The stop strip is fastened to the horizontal leg of the angle piece by means of two additional screws and can be adjusted only in its longitudinal direction after loosening the two screws, which are also only accessible after removing the protective shield. In cutting tools with a large diameter, the adjustments described above can only be made after the tool has been removed because only then is there the necessary access to the inside screws. The stop strip must be unscrewed when working with a curve-cutting stop.
Notwithstanding the relatively complicated fastening of the stop strip by a total of three screws described above, this stop strip cannot be swiveled toward or away from the cutting tool to adapt to different tool diameters, nor can it be swiveled out of the work area should this be necessary.
SUMMARY OF THE INVENTION
The invention has the object of developing a stop strip with a clamping member in such a way that the stop strip can be adjusted in a simple, easily accessible manner and without the help of auxiliary tools and can, if desired, be brought into a rest position in which to stop strip remains connected with the protective hood.
In a stop strip of the generic type indicated above, this object is met by the present invention in that the head is formed by two head parts which are shaped like circular disks, are displaceable relative to one another by means of the adjusting screw, and can be spread apart against the walls of the groove.
This solution has the substantial advantage that at least two adjustments, namely a vertical adjustment of the stop strip and an upward swiveling of the stop strip, can be carried out after loosening only one operating element--the adjusting screw. The head parts shaped like circular disks allow the stop strip to be rotated out of its horizontal work position into a vertical rest position after loosening the adjusting screw and can be clamped again in this position without having to remove the protective hood. In order to ensure two defined positions of the strip, a square locking body which engages between the defining edges of the vertical groove in the positions in question is formed at the underside of the stationary head part facing the stop strip.
According to an advantageous further development of the invention, the die can be displaced in a recess of the stop strip and clamped therein by means of the adjusting screw which projects through an elongated hole of the stop strip. This has the advantage that an additional adjusting position, namely the optimal adjustment of the stop strip at a stop ring, can be set by means o
REFERENCES:
patent: 1947885 (1934-02-01), Tautz
patent: 2104158 (1938-01-01), Hedgpeth
patent: 5117880 (1992-06-01), Kapton et al.
patent: 5381842 (1995-01-01), Aigner
patent: 5477899 (1995-12-01), Schmitt
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