Abrading – Machine – Rotary tool
Reexamination Certificate
1997-09-26
2001-02-13
Eley, Timothy V. (Department: 3723)
Abrading
Machine
Rotary tool
C451S048000, C451S282000, C451S375000, C451S382000, C451S389000
Reexamination Certificate
active
06186876
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus for grinding welding electrodes, in particular tungsten electrodes.
2. Description of the Prior Art
Known grinding apparatuses for grinding welding electrodes work with a rotating grinding disc, where the welding electrodes are pointed by pressing against a side surface of the grinding disc in a wanted angle. This grinding principle makes it complicated to vary the grinding angle or the point of the electrodes. Furthermore it is realized, that this grinding principle or grinding apparatus involve some unsolved environmental problems in connection with the aggressive grinding dust resulting from the grinding of welding electrodes containing tungsten.
SUMMARY OF THE INVENTION
The invention has for its purpose to provide an improved apparatus for grinding of welding electrodes, and which by means of simple provisions makes it easier to adjust the grinding angle; as the apparatus in a preferred embodiment may satisfy environmental problems in connection with for instance grinding of tungsten electrodes.
The apparatus according to the invention is distinctive in that afixing comprising an apparatus part arranged to be displaceable parallel to the plane of the grinding disc on a fixed guiding extending vertically, which apparatus part comprises two mutually displaced insertion openings or insertion positions for an electrode holder, namely a first insertion opening or position in front of an arched angle scale provided on the external side of a housing the radius of the arched angle scale is equal to that of the grinding disc) and a second insertion opening or position situated and adapted to fix the electrode parallel to the plane of the grinding disc with the point engaging the upper part of the periphery of the grinding disc (the vertical distance) between the insertion openings is equal to that between the arched angle scale and the grinding disc). By means of simple provisions a grinding apparatus is hereby obtained, which makes it easier to adjust the wanted grinding angle.
Appropriately the apparatus according to the invention is furthermore such provided, that the grinding disc is arranged in a grinding housing preferably built together with a drive motor, the housing being closed with a preferably transparent wall part, and being adapted to be filled with a grinding fluid, preferably water. In a simple manner the the environmental problems with aggressive grinding dust are hereby met, by which manner for an effective collecting of the grinding dust containing tungsten and having a considerable reusable value, furthermore is obtained.
In order to minimize the spraying from the rotating grinding disc, of which the lowermost part is surrounded by the grinding water, the apparatus may advantageously be such provided, that the grinding housing downwards has larger width, and that the grinding housing in front of the grinding disc comprises an(from the bottom) upright partition wall, which lowermost is provided with one or more flow through openings. Due to the rotation of the grinding disc the main part of the grinding fluid is forced out through said flow through openings, so that the fluid level under the grinding disc is minimized.
Also to keep the grinding fluid effectively inside, the apparatus according to the invention may be such provided, that the displaceable apparatus part preferably is waterproof connected with the grinding housing, as there in a side wall part of the grinding housing in front of the active insertion opening or the active insertion position for the electrode holder a flexible, oblong lip tighting is arranged, through which the outermost end of the electrode holder may be inserted.
REFERENCES:
patent: 2607172 (1952-08-01), Ruolle
patent: 3930342 (1976-01-01), Moores, Jr. et al.
patent: 4164100 (1979-08-01), Wolff
patent: 4541760 (1985-09-01), Zoueki
patent: 5400546 (1995-03-01), Christian et al.
Antonelli Terry Stout & Kraus LLP
Eley Timothy V.
LandOfFree
Apparatus for grinding welding electrodes, in particular... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for grinding welding electrodes, in particular..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for grinding welding electrodes, in particular... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2593798