RU146503U1 - MANUAL SHARPENING CUTTING TOOL - Google Patents

Abstract

A device for manual sharpening of a cutting tool, comprising a body and an abrasive block, characterized in that the body is made in the form of a pencil case with neodymium magnets installed in the front part, a pressure plate and a hinged lid with a slot for smooth movement of the slider with a hinge that sets the required angle of sharpening, and the aforementioned the bar is made of aluminum, on the sides of which strips of sandpaper of different grains are glued, with a guide pin screwed into the hole drilled at its end.

Description

The utility model relates to the field of tool grinding and can be used for household and professional sharpening. The prototype of the utility model is a device for manual sharpening of knives “Lansky Sharpeners”, USA (address of the Internet resource: http://www.lanskysharpeners.co.uk/store/lansky-sharpening-systems.html). This device consists of two aluminum corners, between which the knife is clamped with a screw. Several abrasive bars of different grain sizes, in special mandrels, are equipped with wires. Changing the angle of sharpening is realized by discrete movement of the wire from one hole to another. The prototype allows you to sharpen only knives. The angle of sharpening is limited to only 17, 20, 25, 30 degrees. The size and shape of the grinding bars is fixed and the use of other bars is not possible. As they wear out, the bars change their uniform geometric shape, and they must be replaced with new ones. All accessories are stored in a separate plastic case.

The objective of the proposed utility model is to provide the opportunity to sharpen not only knives, but also scissors, axes, chisels, hand planer knives, and planers. This feature is implemented in a new technical solution for the device’s body equipped with powerful magnets, smooth (and not discrete) sharpening angle changes from 0 to 42 degrees, and the use of a special 4-sided aluminum bar, onto which strips of sandpaper of different grain sizes are glued (instead of special bars of the prototype), and a strip of skin rubbed with GOI paste. In the process of sharpening, it is not necessary to change the bars, just turn the working body to the other side. All accessories necessary for sharpening are stored inside the device body.

The technical result that allows us to solve this problem is to expand the functionality by choosing the desired sharpening angle and using sticking strips of sandpaper of different grain sizes.

The technical result is achieved by the fact that in the device for manual sharpening of a cutting tool containing a body and an abrasive block, the body is made in the form of a pencil case with neodymium magnets installed in the front part, a pressure plate and a hinged lid with a slot for smooth movement of the slider setting the required angle of sharpening with by a hinge, and said whetstone is made of aluminum, on the sides of which strips of sandpaper of different grain sizes are glued, screwed into a hole drilled on it RCE hole of the guide pin.

The sharpening device is made in the form of a pencil case with a hinged lid. The case is made of an aluminum channel (Fig. 1), to which a plate with neodymium magnets 2 is welded in front. Openings for fastening a clamp 9 (Fig. 5), a pressure plate 11 (Fig 7), and a latch 7 (Fig. . four). On the side walls of the housing, additional, movable stops 8 are installed to hold wide knives.

The cover of the device (Fig. 2) is made of sheet aluminum. A pivoting loop is riveted to it (Fig. 8), a latch 7 (Fig. 4) holding the lid at an angle of 70 degrees, and a steel plate 3 touching the magnets keeps the lid closed. A slot was made in the lid to move the slider with a hinge (Fig. 3). On the side of the slot, on the one hand there is a precise scale for changing the sharpening angle in degrees, on the other hand - a scale in characters.

The bar 4-sided 14 is made of aluminum. A hole with a thread was drilled in the end for screwing the guide pin 5. On 3 sides of the bar an emery paper 13 of different grain size is glued, on the 4th side there is a strip of leather with grated GOI paste.

The slider 16 (Fig. 3) is made of plastic, and represents two plates pulled together by a screw, between which a ball with a hole is placed. The handle-nut 4 serves to move the slider, and hold it in the slot on a given scale of degrees. The pin of the grinding bar is inserted into the hole of the ball located in the slider.

The sharpening device is attached to the table with a clamp 9 (Fig. 5). The sharpened tool 12 is placed on the magnets 15 and clamped by the pressure plate 11 (Fig. 7). Scissors are clamped by a pressure plate 10 (Fig. 6) located in the front end of the housing. Strips of sandpaper 13 of the desired grain size are glued onto the bar 14. The pin 5 is wrapped in a block, and inserted into the hole of the ball 6 located in the slider 16. By moving the slider in the slot of the lid, the required sharpening angle is set. The sharpened tool is placed on the magnets and is additionally clamped by the clamping bar 11, or movable stops 8.

Sharpening is performed by reciprocating the 4-sided bar along the sharpened tool with a given angle using the slider.

Production of a utility model in single copies, possibly in a home workshop, using the simplest metal processing methods.

Claims (1)

A device for manual sharpening of a cutting tool, comprising a body and an abrasive block, characterized in that the body is made in the form of a pencil case with neodymium magnets installed in the front part, a pressure plate and a hinged lid with a slot for smooth movement of the slider with a hinge that sets the required angle of sharpening, and the aforementioned the bar is made of aluminum, on the sides of which strips of sandpaper of different grains are glued, with a guide pin screwed into the hole drilled at its end.

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