SU623671A1 - Disc shears - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to the longitudinal trimming of the edges of the strip material in continuous aggregates.

Disc shears are known, which contain drive knives that interact with each other and a supporting blade, a rubber disk located next to one disk knife and directly below another Til.

On these sheaths, the curling of the edges of only the thin material is eliminated.

Disc shears are known, comprising manufactured disk knives interacting with one another and a supporting disc located adjacent to one disc knife and directly below the other 2. On these sheaths, the twisting of the cut edge is not completely eliminated.

In order to eliminate the twisting of the cut edge, in the proposed scissors the forming supporting disk is curved.

FIG. 1 shows the proposed scissors, a general view; in fig. 2 — node I in FIG. one.

The disk shears contain drive disk knives 1 and 2, which sit on shafts 3, 4 connected via a gearbox 5 to a drive 6. Next to the disk knife 2 directly below the knife 1, a support disk 7 is formed on the shaft 3, forming 8 of which is curved. The disc shears have a knot for adjusting the side clearance between the knives and a knot for adjusting the overlap of the knives. Both or one of the circular knife

made with a given angle of sharpening.

Scissors work as follows. The strip is set into knives and the edge 9 is cut. When cut, the edge 9 starts to twist, but, interacting with the curvilinear generatrix 8 of the backing disk 7, it straightens. Tests were carried out on trimming circular scissors, in which on the lower axis opposite to the upper knife of each pair of knives,

Claims (2)

a supporting disc with a diameter of 410 mm and a width of 45 mm with a concave generatrix (the upper knives had the shape of a truncated cone with a taper of 1: 5); concavity value - 4 mm. When cutting edges of 15-4 mm wide steel strip 4 mm thick, there were no jams on the edging machine, and when the edges were used on conventional disk, the number of mill stops due to jams on the edging scissors averaged 7-10 times per shift. Claims of discoloration Disc shears containing cooperatively interconnected circular knives and a supporting disk located adjacent to one disk knife and directly below the other, are different in that, in order to eliminate the twisted edge, the forming disk of the supporting disk is curved. Sources of information taken into account during the examination: 1, Copyright certificate №109097, cl. In 23 1 19/04, 1957. 2. Copyright certificate №452444, cl. B 23 D 19/04, 1971, G.-KQ -D- (b. czzi zzrzza