RU2283754C2 - Axe - Google Patents

Abstract

FIELD: hand-held cutting tools.

SUBSTANCE: axe comprises blade and butt fit on the handle. The axis of symmetry of the blade is inclined to the axis of symmetry of the butt. The blade is turned toward the handle, and the opening of the butt converges toward the handle in the plane passing through the cutting edge of the blade. The axis of symmetry of the blade can be inclined to the axis of symmetry of the butt at an angle of 7-15°. The working surfaces of the blade can be arranged at an angle of 13-17° one to the other. The grinding angle of the cutting edge of the blade is equal to 27-33°. The butt cab be round.

EFFECT: enhanced reliability.

4 cl, 3 dwg

Description

The invention relates to manual cutting tools, in particular to axes for chopping, chopping and tees wood.

Known ax patent RF №2024389. The ax contains a butt with a hole under the ax and a blade with a straight cutting edge. The axis of symmetry of the working surface of the web coincides with the axis of symmetry of the butt. /one/

The disadvantage of such an ax is that it is designed for rough processing of wood and, during operation, when stuck, it is pierced into the tree primarily by the angle of the cutting edge of the blade, which leads to the formation of steps on the surface of the wood and, as a result, to a decrease in the quality of the work performed.

The prototype of the claimed invention is an ax containing a butt with a hole for a wedged ax and a blade with a rounded cutting edge (see Anikin BP, "Mechanization of logging", Moscow-Leningrad, 1950, pp. 109-111, Fig. 69, 70 ) The axis of symmetry of the working surface of the web coincides with the axis of symmetry of the butt. / 2 /

The rounded cutting edge of the ax allows you to do finer work, however, while working with wood the ax also pierces the tree with the angle of the cutting edge of the blade, which leads to the formation of steps on the surface of the wood and to reduce the quality of the work performed.

The location of the wedge in the ax along the axis of the butt hole when working with an ax transfers the load only to the side surfaces of the ax in contact with the wedge, which is an unreliable fastening of the ax with the ax.

The problem to which the invention is directed, is to create an ax design that can improve the quality of work and increase the reliability of the ax design itself.

The problem is solved in that in an ax containing a blade with a rounded cutting edge and a butt, mounted on an ax, according to the invention, the axis of symmetry of the blade is located relative to the axis of symmetry of the butt at an angle, while the blade is turned toward the ax, and the butt hole under the ax in the plane passing through the cutting edge of the blade is made narrowed towards the ax.

The axis of symmetry of the web is located relative to the axis of symmetry of the butt at an angle of 7-15 °.

The working surfaces of the ax blade are located to each other at an angle of 13-17 °.

The sharpening angle of the cutting edge of the blade is 27-33 °. The wedge in the hatchet is located to the axis of symmetry of the butt hole at an angle of 30-40 °. The ax butt is rounded.

The invention is illustrated by drawings.

Figure 1 shows the proposed ax;

figure 2 is a proposed ax, a top view without an ax.

figure 3 - the proposed ax at the maximum angle of displacement of the axis of symmetry of the canvas relative to the axis of symmetry of the butt.

The ax contains the blade 1 with a rounded cutting edge 2 and the butt 3, mounted on the ax 4. The axis of symmetry O-O of the blade 1 is located on the axis of symmetry O ₁ -O ₁ butt 3 at an angle α equal to 7-15 °.

The working surfaces 5 of the blade 1 are located to each other at an angle β equal to 13-17 °, and the sharpening of the cutting edge 2 of the blade 1 is made at an angle γ equal to 27-33 °. The hole 6 of the butt 3 in the plane passing through the cutting edge 2 of the blade 1 is narrowed towards the hatchet 4. The surface 7 of the butt 3 is rounded.

When the wood is pulled, the ax, due to the displacement of the axis of symmetry O-O of the blade 1 to the axis of symmetry O ₁ -O _{1 of the} butt 3 in the direction of the ax 4, is pierced into the wood by the cutting edge 2 between points B and C, depending on the angle of displacement. At the maximum angle of displacement (α = 15 °), the ax is in contact with the tree in the middle of the rounded cutting edge 2 (at point B). As the angle of displacement α decreases, the ax will contact the tree at points located on the rounded cutting edge 2 from point B to point C, which allows the tree to be processed without the formation of steps and thereby improve the quality of processing.

Due to the narrowed hole 6 of the butt 3, the ax during operation does not slide off the ax 4, but under the influence of centrifugal force it is even more mounted on it. In this case, the ax does not need to be wedged.

When sharpening the cutting edge 2 of the blade 1 at an angle of 27-33 °, the ax, crashing into the tree, easily forms a crevice, and when the working surfaces 5 of the blade 1 are positioned at an angle of 13-17 °, the ax penetrates deep enough into the tree and is easily removed back, which facilitates chopping and chopping wood.

The rounded surface 7 of the butt 3 allows you to hammer nails with an ax, if necessary, without forming dents on the surface of the wood.

The use of an ax of the proposed design can improve the quality of the work performed, as well as increase the reliability of the ax design itself.

Information sources

1. RF patent No. 2024389, IPC B 26 V 23/00, publ. 1994.

2. Anikin B.P. "Mechanization of logging." Moscow-Leningrad, 1950, pp. 109-111, Fig. 69, 70.

Claims (5)

1. An ax containing a blade with a rounded cutting edge and a butt, mounted on a hatchet, characterized in that the axis of symmetry of the blade is located relative to the axis of symmetry of the butt at an angle, while the blade is turned toward the hatchet, and the butt hole under the hatchet in a plane passing through the cutting edge of the blade is narrowed towards the ax. 2. The ax according to claim 1, characterized in that the axis of symmetry of the blade is located to the axis of symmetry of the butt at an angle of 7-15 °. 3. The ax according to claim 1, characterized in that the working surfaces of the canvas are located to each other at an angle of 13-17 °. 4. The ax according to claim 1, characterized in that the angle of sharpening of the cutting edge of the blade is 27-33 °. 5. The ax according to claim 1, characterized in that the butt is made rounded.

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