Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1988-09-29
1990-03-13
Olszewski, Robert P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51417, 51421, 51425, 51432, B24C 0314
Patent
active
049073796
DESCRIPTION:
BRIEF SUMMARY
This invention relates to shot blasting machinery.
There are many engineering and metal fabricating facilities where shot blasting is required but where, for various reasons such, for example, as cost of machinery or relatively short time per day or week of actual usage, there is no in-house shot blasting facility. Such engineering or metal fabricating facilities generally send out their metal work to firms which contract to do this shot blasting work. This is often not satisfactory in that production of a particular job must stop until the shot blasted work returns and moreover it is relatively costly transporting the work to and from the shot blasting contractors and also, of course, paying for the shot blasting work to be done.
It is an object of the present invention to provide a shot blasting machine which would be suitable, particularly in cost, for said engineering and metal fabricating facilities.
According to the present invention there is provided a shot blasting machine comprising a blast cabinet having at least one internal abrasive throwing wheel rotatably mounted therein and directly coupled to a driving motor mounted externally on one wall of the blast cabinet with an opposed wall of the blast cabinet having mounted thereon externally of the blast cabinet abrasive delivery means for the throwing wheel and being disposed immediately adjacent to the throwing wheel, whereby the blast cabinet also functions as a hood for the throwing wheel.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a perspective view of a shot blasting machine according to the present invention;
FIG. 2 is a side elevation of the machine;
FIG. 3 is an end elevation of the machine;
FIG. 4 is a plan view of the machine;
FIG. 5 is a fragmentary sectional view, to an enlarged scale, of the blast cabinet of the machine;
FIG. 6 is a perspective view, again to an enlarged scale, of part of the blast cabinet, abrasive feed and throwing wheel driving motor;
FIGS. 7 to 9 are respectively a side view, an end view and a plan view of an alternative blast cabinet;
FIGS. 10 to 12 are respectively a side view, an end view and a plan view of yet another blast cabinet in which a rotatable table is used to present the workpiece to the throwing wheels for shot blasting;
FIGS. 13 to 17 show diagrammatically alternative shot blasting configurations of the shot blasting machine according to the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The shot blasting machine according to FIGS. 1 to 6 comprises a blast cabinet module 28 connected to, and communicating with, at its bottom an abrasive and contaminant (debris) separation and dust collector module 30.
The blast cabinet module 28 comprises a blast cabinet 31 possibly formed of maganese to avoid the provision of internal hard metal wearplates as is common in shot blasting machines but which may be formed of other metal with or without wearplates.
The blast cabinet 31 is relatively narrow in terms of width, about the width of a conventional wheel hood appropriate in dimensions to an abrasive throwing wheel employed in the blast cabinet.
This narrowness in blast cabinet width is a major distinctive characteristic of the blast cabinet 31 of a shot blasting machine according to this invention, and is achieved, as will be detailed hereafter, by locating the throwing wheel driving motor external of the blast cabinet 31 on one wall of the latter and the abrasive feed arrangement again external of the blast cabinet 31 on the opposed wall thereof aligned with the driving motor.
Reference is now particularly directed to FIGS. 5 to 6.
The blast cabinet 31 has two opposed major walls 32, 33 joined at the top by a roof 34, at the ends by end walls 35, and at the bottom by a floor 36 (see FIGS. 1 to 4).
Abrasive throwing wheels 37 are rotatably mounted within the blast cabinet 31. In this instance, there are for such throwing wheels 37, two above and two below the
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Olszewski Robert P.
Tilghman Wheelabrator Ltd.
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