Metal deforming – By or with work-constrainer and/or manipulated work-forcer
Patent
1991-07-30
1993-02-16
Larson, Lowell A.
Metal deforming
By or with work-constrainer and/or manipulated work-forcer
72705, B21D 112
Patent
active
051860384
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a car body rectifying means and a procedure in car chassis rectifying.
Such car chassis rectifying means are known in the art in which the car is driven to a rectifying table and fixed to the skirt attachments of the rectifying table and is thereafter lifted to the desired height position. The car body rectifying operation is further accomplished using separate support arms, pulling halters, or equivalent by applying a force to said rectifying tools and directing it at the object to be rectified. In the Finnish patents Nos. 59 348 and 53 930 of the same applicant rectifying means are disclosed in which the force can be directed in desired direction on the object to be rectified. Similarly, through the earlier Finnish patent No. 862265 of the same applicant is known a car body rectifying means in which a separate rectifying unit can be attached to the rectifying table. The design of the Finnish patent application No. 862265 allows the rectifying to be carried out on the understructure of the car, as well as rapid and flexible transfer of the power to the objects to be rectified. The object of the present invention is an improvement regarding particularly the means design of the Finnish patent No. 862265.
It has been understood in the invention to provide a rectifying unit to be attached to the rectifying table which comprises a slide unit and a semicircular plate in fixed position on the slide unit, the rectifying boom of which, turnable to engage with receptacle notches can be fixed in optional positions. The rectifying boom can be turned 180.degree. around the vertical axis. As taught by the invention, a turnable rectifying boom positioned on the end of the rectifying unit is used which comprises a horizontal beam section and a vertical beam section, said vertical beam section being pivoted to be rotatable in the vertical plane, whereby the force can by means of an action between the horizontal beam section and the vertical beam section be directed from the turnable vertical beam further on to the object to be rectified on the car body. As taught by the invention, the rectifying means comprises a slide unit which can be moved, using a separate action means, preferably a hydraulic cylinder, in horizontal direction and preferably in the direction of the central axis X of the rectifying table. The slide unit comprises box beams which can be moved, directed by beams parallelling the central, or X axis of the base frame of the rectifying unit. The slide unit can be secured in optional positions to the beams of the base frame of the rectifying unit.
Furthermore, the slide unit of the rectifying means comprises a beam section in the Y direction at right angles to the beam sections in X direction and to which a separate support arm or directly a tool can be fixed.
Therefore, the slide unit can be moved parallel to the central axis X of the rectifying table. The tool or support arm mounted on the slide unit can moreover be moved at right angles to the X axis, that is, in the direction of the Y axis. Consequently, the rectifying unit of the invention can be applied with ease, and rapidly to carry out the rectifying of the understructures of the car body as well as the superstructures of the car body using an L shaped rectifying boom, turnable through 180.degree., connected to the slide unit.
With the means of the invention a counter force can be transmitted to the opposite side of the object to be rectified, by using a rectifying boom turnable through 180.degree. and an additional support arm on the slide unit, and by keeping the slide unit in a non-secured state. A counter-force is then directed through the pull halter attached to an additional support arm connected to the slide unit on other side of the point to be rectified, whereby the body area on the other side of the point to be rectified can be kept stationary.
The car body rectifying means of the invention is mainly characterized in that the rectifying unit comprises a base frame and a slide unit movable relative thereto, an actuat
REFERENCES:
patent: 4281532 (1981-08-01), Covington
patent: 4289016 (1981-09-01), Hare
Autorobot Finland KY
Larson Lowell A.
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