MXPA00007894A - Method of making an earth tilling sweep from disc scrap - Google Patents

Abstract

A method of making earth tilling sweeps from disc scrap including a process of cutting a plurality of circular discs side-by-side to form disc cut-outs as well as discs. Each cut-out is formed around an axis which is perpendicular to the plane of the sheet of metal from which the discs are cut. The method herein includes leaving a predetermined width of material between the disc cut-outs and a predetermined width of metal between each respective disc cut-outs on at least one of the side edges. A sweep blank is made by cutting between and through the width of metal between the cut-outs and between the one edge and each one of two adjacent cut-outs. Further cutting of the sweep blank toward its final configuration includes forming attachment openings therein. The sweep blank is then bent into a three-dimensional shape for use in tilling the earth.

Description

METHOD FOR MAKING A SURFACE TREATMENT OF SOILS FROM DISC SURPLUS BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to the manufacture of soil tillage harvesters or cultivators or the like and more specifically to a method for making such scrapers from surplus (scrap) remaining from the manufacture of discs. of agricultural tillage or similar.

Description of the Prior Art Making dredges from a template and printing or cutting the complete contour of the roughs generates a considerable amount of excess metal and often this excess metal is simply thrown away. After cutting the rough plane, it is shaped three-dimensional in the manufacturing process. Similarly, when manufacturing soil tillage discs such as those used in agriculture, the discs are cut or stamped from a metal plate, usually from a rectangular piece of metal, and the remainder is discarded. Therefore, it is necessary to find a way to use a greater amount of material surplus in the manufacturing process of discs and harrows to reduce the wasteful use of current manufacturing methods.

BRIEF SUMMARY OF THE INVENTION The present invention relates to a method for making soil tillage harvesters from disc surplus, including the process of cutting multiple circular discs side-by-side to form cutouts as well as discs. Each cut is formed around an axis that is perpendicular to the plane of the metal plate from which the disks are cut. The plate has a longitudinal axis. The method disclosed herein includes leaving a certain width of material between the cutouts and a predetermined width of metal between each of the respective disc cutouts and at least one of the side edges of the plate. A rough scraper is cut between and across the width of the metal between the cutouts and between the said edge and each of two adjacent cutouts. The subsequent operation of cutting the scrap coarse to give it its final configuration includes forming securing openings therein. The rough dredge is then bent to achieve a three-dimensional figure for use in soil tillage. It is an object of the present invention to provide an improved method for making harrows from the surplus of the manufacture of disks in order to reduce the amount of scrap It is another objective of the present invention to use the circular cut that is made in the disks, as part of the contour for a rough scraper, in order to reduce the excess metal generated in these processes.

It is still another objective of the invention to use some of the cuts that were already made in the manufacturing process of a disc and save most of the remainder of such manufacture, which is transformed into a useful product, such as a harrow . Other objects, advantages and novel features of the present invention can be appreciated based on the following detailed description if considered in conjunction with the accompanying drawings.

DESCRIPTION OF THE DRAWINGS FIG. 1 shows a metal plate in continuous lines where the discs that are cut from it are represented with dotted lines; FIG. 2 presents a part of the metal plate of FIG. 1 where it is shown how a coarse for a harrow is trimmed, from the surplus of the disk manufacturing process. FIG. 3 shows how the rough FIG. 2 is formed step by step to form a tillage harrow; and FIG. 4 is a partial and perspective view of the finished harrow attached to a handle and to a cultivator frame for soil tillage.

DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawings, in which reference numbers in a consistent manner to designate identical or corresponding parts through various views, FIG. 1 shows a sheet of material (10) from which multiple discs (11) have been cut. These discs (11) can be used for farming equipment that is current in the field of agriculture. Typically, a slightly smaller plate (10) would be used to reduce the amount of excess produced, but the present invention refers to leaving slightly more material between the side edges (12) and the edge (13) closest to the side edges. , for reasons that will be explained later. The cut parts (14) are substantially the same shape as the discs (11) that are circular. Referring now to FIG. 2, it can be seen that when cutting along the cuts (15), which are on a line (16a) that passes through the upper part of the plane of the plate (10) and through the axes (16b) ) around of which the disks (10) and cutouts (14) are formed, a part of a harrow is formed (17). Additional cuts are made along the lines (18), as can be easily seen in FIG. 2. If the plate (10) is made so that there is a little more distance between the outer edges (13) of the cutouts (14) and the side edges (12), there is enough material available to make the rough harrow (17), so that the portions (19) of the coarse (17) do not need to be cut to a different curvature, being able to use the circular curvature already existing in the coarse (17). Previously, these metal pieces around which the disks (11) have been cut have been merely considered as surplus, instead of producing a useful piece of metal that needs less cutting operations to shape it, in comparison to the number of operations of cut that would be needed if it were made of a metal plate (10) of FIG. 1. Consequently, it is clear that if the cuttings of the disks (14) are slightly separated (which increases the amount of metal that remains), to allow more space along the line (15) and determine the width in the tip (20) of the rough. (17) and allowing more material on the lateral edges (12), it is possible to obtain a rough (17) of what would otherwise be left over from the process of manufacture of the disc shown in FIG. 1. This rough uses some of the cutting operation that has already been done in the disc manufacturing process of FIG. 1 and saves most of the excess left by the manufacture of discs, converting it into a useful product, such as the rough scraper (17). Referring now to FIG. 3, it can be seen that the harrow (17) needs to be further cut during the manufacturing process of a shaped harrow (17a), which is essentially done by cutting holes (21) and V-shaped portions (22) , which are removed from the rough (17). The next step is to form the harrow (17b) from the coarse (17a), bending and forging it to obtain a three-dimensional harrow that is similar to the harrows that are used for soil tillage, for example for the cultivation of weed crops . The final product (17b) can be subjected to heat treatment at any appropriate stage of the process and can be sharpened at the tip (20), if desired. It can also be sharpened along its arched portions (19), if desired, but this is certainly not necessary. To use the harrow 17b, it can be attached to a handle 23 by bolts, the handle 23 can be spring steel and the handle can be attached by bolts 24 or otherwise to the frame 25 of a piece of a farming equipment of soils, such as a weed cultivator or similar. In accordance with the above, it will be understood that the method shown in this presentation really fulfills the aforementioned objectives. Obviously many modifications and variants are possible in light of the above explanations. Therefore, it should be understood that, without departing from the scope of the following claims, the invention may be practiced in a manner other than that specifically described.

Claims (5)

1. CLAIMS 1. A method for making a soil tillage harrow from scrap discs, the method comprises: cutting multiple circular discs, side by side, to form a cutout; each cut is respectively on an axis substantially perpendicular to the plane of a metal plate from which said disks are cut, the iron has a longitudinal axis extending through the side edges; the method includes leaving a predetermined metal width between the cut-outs of the adjacent discs and a predetermined width of metal between each respective cut-out of the discs, in at least one of the lateral edges; forming a rough scraper between and through the metal width between cutouts and between said at least one edge and each of the two adjacent cut-outs; additionally cutting the harrow from the harrow to its final configuration, including forming anchoring openings in it; and bending the rough scraper to form a soil tillage harrow.
2. 2. A method according to claim 1, wherein the cuts, through said metal width between cuts, are made along a line that passes substantially through the axes. perpendicular or is parallel to them.
3. A method according to claim 1, which includes securing the soil tillage harrow to a handle and operatively securing the handle to a piece of soil tillage equipment.
4. 4. A method according to claim 1 wherein a portion of the harrow that is forward facing is sharpened where it was cut to the predetermined width between the adjacent cut-outs. A method according to claim 1, wherein a portion of the outer periphery of said harrow, from the portion of the harrow that is further toward the front to the rear of the harrow, includes a part thereof that has substantially the same radius of curvature as the radius of curvature of the disc cutouts, whereby a subsequent change of radius in the formation of that portion of the harrow is not necessary and thereby reduces the manufacturing cost of the harrow in comparison with manufacturing processes that completely cut the outer periphery of a harrow.