SU1516316A1 - Device for sharpening cutting tools - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used in the machining industry for sharpening various tools with curvilinear working surfaces, for example, pruning shears for cutting wood. The purpose of the invention is to expand the technological capabilities of the device by providing sharpening cutting edges of various configurations. The drum 3 is mounted on the eccentric shaft 4. Gear 4 is rigidly mounted on the eccentric shaft 4. Gear 7 meshes with the fixed gear 8. When the eccentric shaft 4 rotates, drum 3 moves along a complex trajectory, while each point of the drum 3 moves along a type curve cycloid. At the periphery of the drum 3, mechanisms are installed for fastening the sharpened cutting tool (knives). Attachment mechanisms allow knives to rotate in two planes. The surface of the knife to be processed is positioned so that it fits into the curved surface described by the drum 3. 3 Il.

Description

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moiipch AND yc i poiir i na iiYTt i. oi i Siech- - PIA of the dislocation of the chuck edges by a distinctive pattern. The drum 3 is mounted on the eccentric shaft A. Gears 7 are rigidly mounted on the eccentric shaft 4. 1 | 1 gear 7 meshes with the non-idle gear 8. When rotating the eccentric 1 shaft 4, the drum 3 moves along a complex trajectory, while ka point drum 3 is moving along the curve. The invention relates to mechanical engineering and can be used, 1 is used in mechanized production of 1 production for sharpening various tools with

curvilinear working on top of the edges, such as a pruner knife for cutting wood.

The purpose of the invention is to sharpen the cutting edges of various 1st configurations.

FIG. 1 shows the device,. general view; in fig. 2 - the same, side view; in fig. 3 - the location of the machined tool in the grinding process.

The device contains a base 1, 1S Ifovalny velleyl with a grinding wheel 2, a drum 3. The drum 3 is mounted on an eccentric shaft 4,

which is mounted on two bearings 5 on the base 1. On eccentric shaft 4, on the bearings 6, a pacter 7 is installed, rigidly connected to the drum 3. The cogwheel 7 engages with the fixed gear 8. The eccentric Baj 4, the gears 7 and 8 form a curvilinear forming mechanism surfaces. At the periphery of the drum 3, mechanisms are installed for fastening the sharpened cutting tool (knives) 9. The knife fastening mechanism 1 is a device consisting of a base 1 and 10, onto which with a plate of two bolts 1 1 with a bar 12. On the bar 12 is installed: the plate 13 is swiveled with the possibility of adjusting the rotation of the latter relative to the flange 12. The knife 9 is mounted on the plate 13 and fixed by means of the fastener 14.

The device works in the following way.

 163164

on ii, .bi. On the non, iphery of the drum 3, mechanisms are mounted for fastening the sharpened cutting tool (knives). The mechanism, the consequences, and the condition of the 1 h can be turned around in two double points. We treat the surface of the knife pacnoj araei with in such a way that it is wiped in CIP 10

volynry surface, onisyvaemyy drum 3. 3 Il.

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The drum 3, when rotated from a drive (not shown), moves along a c: curvilinear trajectory together with knives 9 mounted on it. The complex movement of the drum 3 cJ is driven by the reciprocating 1O-movement from the eccentric A and the rotational movement of the gear 4 running around the fixed gear 8. The mounting mechanism of the knives 9 allows the knife 9, which fits on the plate 13, to rotate relative to two axes. This makes it possible to ensure the adjustment of the fitment to the processing of the knife 9 and the correction of possible inaccuracies of the entire sharpening mechanism. The motion path L of the drum 3 is calculated so that on one of the sections of this path it is possible to inscribe in the curvilinear surface described by the drum 3, the edge of the knife 9, 1 intended for processing (Fig. 3).

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The treatment surface is located at an angle to the cyclic surface A described by the drum 3, which allows the use of a grinding wheel 2 with a straight line pattern.

The device provides processing of cutting blades of various configurations, allows reducing cutting forces and eliminating burns of the treated surface.

Claims (1)

Invention Formula A device for sharpening a cutting tool, made in the form of a base, on which is placed a grinding and one grinding drum, a drum with a drive for its rotation, a forming mechanism curvilinear surfaces and with fastening mechanisms of the tool to be placed on its periphery, characterized by that, in order to expand the technological capabilities of the device by providing sharpening cutting edges of various configurations, the gear The curvilinear surfaces are shaped as an eccentric shaft and two gears, one of which is fixed on the base, and the other is kinematically connected with it and rigidly mounted on the end of the drum, while the latter is mounted on the eccentric shaft. Fm.2 Thebes.