CN211333302U - Double-side main-edge multifunctional knife with chopping saw strength and cutting sharpness - Google Patents

Abstract

The utility model discloses a compromise and cut two side main sword multifunctional cutter of chopping saw intensity and cutting sharpness, in particular to extensively be used for the multifunctional cutter of cooking kitchen affairs, agriculture and forestry operation and outdoor activities etc.. In order to solve the contradiction that the strength and sharpness of the cutting edge are difficult to be considered in the practical use of the cutter, the utility model designs a cutter, wherein, the two sides of the cutter body are edged and are both main edges, one side is a strong edge, the edging angle is not less than 30 degrees, the other side is a sharp edge, the edging angle is not more than 44 degrees, and the strong edge angle on the same cutter is more than the sharp edge angle; meanwhile, the strength of the strong edge and the sharpness of the sharp edge are considered through different combinations of grinding modes, sharpening times and the like. The utility model discloses a design idea and method have improved the utilization ratio and the use value of cutter material, have strengthened each scope of application of cutter and more outstanding functional and reliability, can produce saving, high-efficient, reliable, convenient effect, have very big economy and social.

Description

Double-side main-edge multifunctional knife with chopping saw strength and cutting sharpness

Technical Field

The utility model relates to a compromise and cut the multi-functional sword of two side main edges of chopping saw intensity and cutting sharpness, in particular to extensively be used for the multi-functional cutter of cooking kitchen affairs, agriculture and forestry operation and outdoor activities etc..

Background

For a long time, most of cutters in the fields of cooking and kitchen work, agriculture and forestry operation, outdoor activities and the like are single-edge or single-side edge cutting of a cutter body, and the contradiction that the strength and the sharpness of the cutting edge are difficult to take into account exists in the practical use; very few tools are designed with a back edge (or back tooth), which is also a secondary functional edge or a complementary edge that supplements the primary function; although the dagger is designed with double blades, the dagger has the main function of a dagger instead of a side blade, and is not suitable for the needs of cooking, kitchen work, agriculture and forestry work and the like. In order to utilize the material of the cutter to the utmost, realize the perfect compromise of the strength and the sharpness of the blade, and improve the reliability, the multifunctionality and the effectiveness of the use of the cutter, the cutter with the blade and the blades opened at two sides needs to be designed, wherein one side is the blade with larger strength, and the other side is the blade with larger sharpness, and the blades are the same important blades for realizing the most basic and the most main functions.

Disclosure of Invention

To the problem that exists, the utility model aims at providing a two side edging of blade be the main function sword, and be the multi-functional cutter of great intensity sword and great sharpness sword respectively for fields such as cooking, agriculture and forestry operation and outdoor activities satisfy production life needs better.

In order to achieve the above object, the utility model adopts the following technical scheme:

a kind of double-side main-edge multi-functional knife giving consideration to the strength of chopping and cutting saws and cutting sharpness, including blade, cutting edge, shank, the edging of both sides of blade is flat edge or tooth edge or half tooth edge, wherein, the length of edging of both sides of blade without back of a knife is greater than half of the length of blade, except that the tool bit or tool point do not limit the angle of edging or grinding way or edging frequency of both sides are different, make blade one side open suitable for chopping or larger strength edge of saw, another side open suitable for cutting or larger sharpness edge of cutting or cutting, the blade of both sides is equal and important to realize the most basic, indispensable cutting edge of the most main function;

the sharpening times do not include the very young sharpening or the very young cutting times with the edge face width of less than 0.5 mm;

the higher strength edge is a strong edge;

the edge with larger sharpness is a sharp edge;

the strong or sharp edge is the main edge.

Further, the two sides of the knife body are subjected to flat grinding and sharpening, when only one sharpening is carried out, one side is a large-angle flat grinding edge, the other side is a small-angle flat grinding edge, when one side is subjected to primary sharpening and the other side is subjected to secondary sharpening, or when both sides are subjected to secondary sharpening, one side with a large sharpening angle in the two sides or any side with the same sharpening angle is subjected to final sharpening, the large-angle flat grinding edge is adopted, the final sharpening is carried out on the other side, when the sharpening on any one side exceeds two times, the final sharpening is adopted as the first sharpening and the second sharpening, and the specific degree of large angle on the same knife is greater than that of small angle;

when the final sharpening on one side or two sides of the knife body needs convex sharpening, only the large-angle flat sharpening blade in the flat sharpening blades on the two sides of the knife body is set as a large-angle convex sharpening blade, and simultaneously the small-angle flat sharpening blade is set as a small-angle convex sharpening blade or a small-angle non-convex sharpening blade, wherein the convex sharpening blade angle is an included angle formed by intersecting two planes of a convex sharpening blade edge line and a position line on a convex sharpening surface which is parallel to the convex sharpening blade edge line and is at a vertical distance of 1 mm;

when the final sharpening on one side or two sides of the knife body needs concave sharpening, only the large-angle flat sharpening blade in the flat sharpening blades on the two sides of the knife body is set as a large-angle concave sharpening blade or a large-angle non-concave sharpening blade, and simultaneously the small-angle flat sharpening blade is set as a small-angle concave sharpening blade, wherein the concave sharpening blade angle is an included angle formed by intersecting a concave sharpening blade edge line and two planes on which position lines on a concave sharpening surface which is parallel to the concave sharpening blade edge line and is perpendicular to the concave sharpening surface at a distance of 1 mm are located;

the large angle is not less than 30 degrees;

the small angle is no greater than 44 °;

when the edge of the convex grinding surface farthest from the cutting edge line is positioned on the convex grinding surface, if the vertical distance between the position line and the convex grinding edge line is greater than 0.5 mm but less than 1 mm, calculating an included angle formed by the intersection of the two planes according to the position lines on other grinding or non-grinding surfaces at the position of 1 mm;

and when the position line on the concave grinding surface is at the edge farthest from the cutting edge line on the concave grinding surface, if the vertical distance between the position line and the concave grinding edge line is more than 0.5 mm but less than 1 mm, calculating the included angle formed by the intersection of the two planes according to the position lines on other grinding or non-grinding surfaces at the position of 1 mm.

Still further, when one side or both sides of the blade body are provided with two-time sharpening, and when one of the two-time sharpening is convex sharpening, the second sharpening on the side where the two-time sharpening is flat sharpening or concave sharpening, when one of the two-time sharpening is concave sharpening, the second sharpening on the side where the two-time sharpening is flat sharpening or convex sharpening, and when the two-time sharpening is based on the first sharpening in a non-flat sharpening manner such as convex sharpening or concave sharpening, the two-time sharpening is regarded as only one sharpening on the side where the two-time sharpening is provided with a large-angle edge or a small-angle edge and a combination in both sides of the blade body when only one of the two-time sharpening is performed.

And when the grinding mode of the last sharpening on one side or two sides of the knife body is chisel grinding or single-side convex grinding or single-side concave grinding, the angle of the last sharpening is calculated, the last sharpening is set to be a large-angle edge or a small-angle edge, and the last sharpening is combined in two sides of the knife body respectively according to the mode that the last sharpening is flat sharpening or convex sharpening or concave sharpening.

Furthermore, the two sides of the knife body are provided with marks for distinguishing and indicating the strong edge and the sharp edge, the marks are composed of short lines which are round, extend symmetrically left and right under the circle by taking a tangent point as a center, long lines which extend from the tangent point to the knife handle on the circle or long lines which extend from the position closest to the knife handle on the circle to the knife handle, the short lines or the long lines are parallel to the longitudinal center line of the knife body, the sharp edge is arranged on one side of the short lines, the strong edge is arranged on one side of the long lines, and the upper and lower positions of the long lines and the short lines are changed along with the strength and weakness of the open edge and the blunt edge on the upper and;

the mark for distinguishing and indicating the strong edge and the sharp edge is a strong sharp edge mark, and the same is carried out below;

the longitudinal center line of the knife body is a center line extending from the knife handle to the knife head or the knife tip.

And the knife tail is a plane vertical to the knife body, and a claw shape which is bent towards the knife body and is provided with a V-shaped opening extends from one side of the plane, and is integrated with the knife handle to form the knife tail claw hammer which can be knocked by the plane hammer, nailed by the claw and held by the knife handle.

Furthermore, one side of the knife body is a chopping edge, and the other side of the knife body is a cutting edge, so that the double-side main-edge tactical kitchen knife is formed.

Furthermore, the tactical camp knife with the main edges at two sides is formed by arranging a chopping or sawing edge at one side of the knife body, a cutting or chipping or cutting edge at the other side of the knife body and a claw hammer head at the tail of the knife body.

Furthermore, the front section of the straight blade edge on one side of the blade body is transversely protruded and connected to the blade head or the blade tip to form a transverse convex blade abdomen, thus forming the double-side main-blade tactical hunting blade.

Furthermore, one side of the front section of the knife body, which is connected with the knife head or the knife tip, is a rear hook full hook or a rear hook half hook to form a double-side main-blade tactical sickle or a double-side main-blade tactical firewood knife.

In conclusion, the design of opening the main blade on two sides and giving consideration to the strength and sharpness of the blade is outstanding, the utilization rate and the use value of the cutter material are improved, the application range and the more outstanding functionality (for example, the sharpness can be better increased without undertaking the chopping task on one side with a small cutting angle) and the reliability (for example, the strength can be better increased without undertaking the cutting task on one side with a large cutting angle) of each cutter are enhanced, the design idea and the method are applied to the fields of kitchen cutters, household cutters, agriculture and forestry cutters, outdoor cutters and even military and police cutters, can produce the effects of saving, high efficiency, reliability and convenience, and have great economic and social benefits.

Drawings

In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to fig. 1 to 24 and the specific embodiment.

FIG. 1: a characteristic schematic diagram of flat grinding and edging of a multifunctional knife with main edges at two sides;

FIG. 2: the characteristic schematic diagram of the convex grinding and concave grinding of the multifunctional knife with the main edges at two sides;

FIG. 3: the structure diagram of the claw hammer with the knife tail;

FIG. 4: drawing a tactical kitchen knife shape of the main edge at two sides of the straight knife head;

FIG. 5: drawing the shape of the tactical kitchen knife with the main edges on the two sides of the semi-straight knife head;

FIG. 6: drawing a tactical kitchen knife shape of the two sides of the pointed end;

FIG. 7: drawing a tactical camp knife shape of the main edge at two sides of the straight knife head;

FIG. 8: drawing the shape of the tactical camp knife with the main edges on the two sides of the semi-straight knife head;

FIG. 9: the tactics camp knife shape of both sides of the cusp is charted;

FIG. 10: the lower side curve of the upper side straight line and the front end vertical line form a straight tool bit and a bilateral main edge tactical hunting knife shape drawing of a transverse convex tool belly;

FIG. 11: the lower side curve of the upper oblique straight line forms a double-side main edge tactical hunting knife-shaped drawing of a pointed end and a transverse convex knife abdomen;

FIG. 12: the upper and lower side curves form a double-side main edge tactical hunting knife shape drawing of a pointed end and a transverse convex knife abdomen;

FIG. 13: the oblique straight line at the lower side of the upper side curve forms a double-side main edge tactical hunting knife-shaped drawing of a pointed end and a transverse convex knife abdomen;

FIG. 14: the upper and lower oblique straight lines form a tip and a lateral convex blade abdomen, and the shape of the tactical hunting blade on the two sides is drawn;

FIG. 15: the lower side curve of the upper side straight line and the front end vertical line form a straight knife head, a full-hook two-side main-blade tactical sickle or a tactical firewood knife-shaped drawing;

FIG. 16: the upper and lower oblique straight lines form a tip-shaped and full-hooked two-side main-edge tactical sickle or tactical diesel knife-shaped drawing;

FIG. 17: the curves at the upper side and the lower side form a tip and full hook tactical sickle with main edges at two sides or a tactical diesel knife-shaped drawing;

FIG. 18: the lower side curve of the upper oblique straight line forms a tip and full hook type tactical sickle with double main edges or a tactical diesel knife-shaped drawing;

FIG. 19: the oblique straight lines at the lower side of the upper side curve form a tip and full hook type tactical sickle with main edges at two sides or a tactical diesel knife-shaped drawing;

FIG. 20: the lower side curve of the upper side straight line and the front end vertical line form a straight knife head and a half-hook tactical sickle with main edges at two sides or a tactical firewood knife-shaped drawing;

FIG. 21: the upper and lower oblique straight lines form a tip and a half hook, and the tactical sickle or the tactical firewood knife is used for drawing;

FIG. 22: the curves at the upper side and the lower side form a tip and a half hook which are used for drawing a tactical sickle with main edges at two sides or a tactical diesel knife;

FIG. 23: the lower side curves of the upper oblique straight line form a tip and a half hook type tactical sickle with double main edges or a tactical diesel knife type drawing;

FIG. 24: the oblique straight lines at the lower side of the upper side curve form a tip and a half hook type tactical sickle with two main edges or a tactical diesel knife type drawing.

Detailed Description

[ example 1 ]

A multifunctional knife with main blades which are ground on two sides of a knife body. As described below in conjunction with fig. 1.

As shown in fig. 1, the multifunctional knife comprises a knife handle and a knife body, wherein two sides of the knife body are flat ground to form edges, and the angle of the upper secondary edge (i.e. the last edge at one side) is an included angle formed by a knife face where a cutting edge line 1 and a knife edge line 2 are located and a knife face where the cutting edge line 1 and a knife edge line 2-1 are located, and is not less than 30 degrees; the angle of the lower secondary edge cutting (the last edge cutting at one side) is an included angle formed by the edge plane where the edge line 6 and the edge line 5 are located and the edge plane where the edge line 6 and the edge line 5-1 are located, and is not more than 44 degrees; and the upper secondary sharpening angle is greater than the lower secondary sharpening angle. Therefore, the upper side is a large-angle blade, the lower side is a small-angle blade, the upper side is a high-strength blade (called a strong blade for short, the same below), and the lower side is a high-sharpness blade (called a sharp blade for short, the same below).

As shown in fig. 1, the angle between the edge plane where the edge line 2 and the edge line 3 are located and the edge plane where the edge lines 2-1 and 3-1 are located (both edge planes extend upward and intersect each other) is greater than (may be set to be equal to) the angle between the edge plane where the edge line 5 and the edge line 4 are located and the edge plane where the edge lines 5-1 and 4-1 are located (both edge planes extend downward and intersect each other), and the strength determined by the angle between the upper side primary sharpening (formed by the edge plane where the edge line 2 and the edge line 3 are located and the edge plane where the edge lines 2-1 and 3-1 are located) is greater than (may be set to be equal to) the strength determined by the angle between the lower side primary sharpening (formed by the edge plane where the edge line 5 and the edge line 4 are located and the edge plane where the edge lines 5-1 and 4-1 are located).

As shown in FIG. 1, the strong sharp edge mark 7 has a long line on the top to indicate a strong edge and a short line on the bottom to indicate a sharp edge for identification and will not be misused (note that in this specification and its drawings, the "strong sharp edge mark" means a double-side-opening main edge and a strong edge).

[ example 2 ]

A multifunctional knife with a main blade which is milled convexly or concavely on two sides of a knife body. As described below in conjunction with fig. 2.

As shown in FIG. 2, the upper side of the blade body is a convex sharpening edge, the blade face is a convex surface rather than a plane, the edge line is 1, the edge line is 3 and 3-1, the edge line 1 projects downward perpendicularly with an end point of 1 mm of the projected line being 8, the position line (not a solid shape line, but an indication line showing only one positional relationship) on the convex sharpening face parallel to the edge line 1 and at a perpendicular distance of 1 mm (indicating that the distance between 1 and 8 is 1 mm) is 2 and 2-1, if the convex sharpening face is narrow, the maximum perpendicular distance of the position line on the face is more than 0.5 mm but less than 1 mm, and the position line is still set at a position on the other ground face or on the non-ground face at 1 mm, the connecting line between the position lines 2 and 2-1 intersects the projected line perpendicularly at the end point 8, the plane of the position line 2 and the edge line 1 and the plane of the position line 2-1 intersect at the edge line 1, the included angle is set as the angle of the convex grinding edge and is not less than 30 degrees.

As shown in FIG. 2, the lower side of the blade body is a concavely ground cutting edge, the cutting edge surface is a concave surface rather than a flat surface, the edge line is 6, the edge line is 4 and 4-1, the edge line 6 projects upward perpendicularly to the point where the projected line is 1 mm, the position line (not a solid shape line, but an indication line showing only one positional relationship, and thus indicated by a dotted line) on the concavely ground surface parallel to the edge line 6 and at a perpendicular distance of 1 mm (indicating that the distance between 9 and 6 is 1 mm) is 5 and 5-1, if the concavely ground surface is narrow, the maximum perpendicular distance of the position line on the surface is greater than 0.5 mm but less than 1 mm, and the position line is still set at a position on the other ground surface or on the non-ground surface at 1 mm, the connection line between the position line 5 and 5-1 intersects the projected line at the point 9 perpendicularly, the plane where the position line 5 and the edge line 6 are located and the plane where the position line 5-1 and the edge line 6 are located at the edge line 6 are intersected at the edge line, the included angle is set to be a concave sharpening angle and not more than 44 degrees.

As shown in fig. 2, the angle of the upper convex sharpening edge (only one time of sharpening, also the last sharpening at the side) of the blade body is larger than the angle of the lower concave sharpening edge (only one time of sharpening, also the last sharpening at the side), the upper side is a large-angle edge and a strong edge, and the lower side is a small-angle edge and a sharp edge.

The two sides of the knife body can be set with a combination of a plurality of grinding modes except that shown in figure 2, but the large-angle edges are subjected to convex grinding, flat grinding and concave grinding in order to ensure the strength, and the small-angle edges are subjected to concave grinding, flat grinding and convex grinding in order to ensure the sharpness; the combination of the large-angle blade and the small-angle blade can not adopt a concave grinding to convex grinding or a flat grinding or flat grinding to convex grinding mode.

According to the above technical solutions and embodiments, the combination of the large angle edge or the small angle edge in the two sides of the blade body mainly includes but is not limited to:

combining angle intervals: the angle of the large-angle edge is not less than 30 degrees, and the angle of the small-angle edge is not more than 44 degrees;

specific degree combination: the specific degree of the large-angle edge angle on the same knife is greater than that of the small-angle edge angle;

combining the positions of the two sides: the large-angle blade and the small-angle blade are respectively arranged on one side of the knife body and are indispensable;

and (4) combination of grinding modes between two sides: the combination of the large-angle blade and the small-angle blade does not adopt a concave-to-convex grinding mode or a flat-to-convex grinding mode;

the combination of the same side edging positions: the large-angle edge or the small-angle edge is the last edging on one side, the edging on the same side is only one time, namely the initial edging and the last edging, the edging exceeds two times, the last two times are used for carrying out the first edging and the second edging, and the second edging is a large-angle edge or a small-angle edge;

sixthly, the combination of the same side opening angle: the secondary edge cutting is a large-angle edge (the other side is a small-angle edge);

the combination of the same side edge grinding mode: the primary sharpening is in a convex grinding or concave grinding mode, and the secondary sharpening, namely the large-angle blade or the small-angle blade, on the side where the primary sharpening is located cannot adopt the same grinding mode as the primary sharpening.

[ example 3 ]

A claw hammer with a knife tail. As described below in conjunction with fig. 3.

As shown in fig. 3, the tail of the shank is 1, the core of the full keel type shank (also called full tenon type tool tenon, and the shank is made of an integral material) is 3, and both are made of metal materials and are welded together; the handle core cladding material is 2, 4, and is fixed on the handle core by a screw or a tenon structure, wherein 4 has the functions of quick assembly and disassembly or sliding left and right and locking, and the position of 4 in the figure shows that the handle core cladding material is already slid to the rightmost position and locked.

As shown in fig. 3, when the tail 1 of the tool holder faces the viewing angle and is enlarged by 5 times to show the components, the tool holder comprises a plane 5 for hammering, and two 'cavels' 6 and 7 for nail pulling (since the 6 and 7 are two left and right branches, are bent towards the tool body, have a V-shaped middle part, and form a shape similar to a cavel, the tool holder is called a cavel).

As shown in fig. 3, the knife tail 1 (including 5, 6, and 7) has the functions of hammering and nailing, and is equivalent to a hammer head of a claw hammer, and the knife handles 2, 3, and 4 (capable of being quickly disassembled and locked in a sliding manner) are used for holding and are equivalent to hammer handles, thereby forming the claw hammer with complete functions and structure.

[ example 4 ]

A tactical kitchen knife with main blades arranged on two sides of a knife body. The following is described with reference to fig. 4 to 6.

As shown in fig. 4, the front end of the knife body is a vertical line, and the straight knife head is 1; as shown in FIG. 5, about half of the front end of the knife body is a vertical line, and the half of the straight knife head is 2; the front end of the knife body shown in fig. 6 is a sharp point, and the sharp point (sharp knife head) is 3.

The cutters shown in fig. 4 to 6 are flat-head, half-flat-head and sharp-head cutters respectively, which are provided with strong sharp edge marks and have more outstanding strength and sharpness, and in addition, the extremely simple design is very suitable for but not limited to use in the field of cooking kitchens, can achieve multiple purposes, saves materials and has half the effort.

[ example 5 ]

A tactical camp knife with main blades arranged on two sides of a knife body. The following is described with reference to fig. 7 to 9.

In the figure 7, the hammer head of the claw hammer with the knife tail is 1, and the straight knife head is 2; the semi-flat cutter head in fig. 8 is 3; the cusps are 4 in fig. 9.

The knife shown in fig. 7 to 9 has the common important characteristic that a claw hammer at the tail of the knife is added on the basis of a tactical kitchen knife, so that the knife not only has the function of a kitchen knife, but also can be better used for work such as outdoor camp construction and the like.

[ example 6 ]

A tactical hunting knife with main blades arranged on both sides of a knife body. The following is described with reference to fig. 10 to 14.

In fig. 10, the curve of the transverse protrusion of the front section of the lower blade is 1, and is connected with the cutter head (the front end of the curve is also a component of the cutter head, the same applies below) to form a transverse protrusion cutter web, and the straight cutter head formed by the lower curve of the upper straight line and the vertical line of the front end is 2; in fig. 11, the front section of the upper blade is changed into an oblique straight line of 3, and the tip composed of the lower curve of the upper oblique straight line is 4; in FIG. 12, the front end of the upper blade is curved to be 5, and the tip composed of the upper and lower curves is 6; in FIG. 13, the front section of the lower blade is changed into a curve in the middle, the two sides are inclined straight lines 7, and the tip composed of the lower inclined straight line of the upper curve is 8; the tip composed of the upper and lower oblique straight lines in fig. 14 is 9.

The knife shown in fig. 10 to 14 has the common important feature of having a laterally protruding blade flank in addition to the design of the strong edge (the design of the strong edge on one side of the knife body and the sharp edge on the other side), which is very beneficial for peeling and decomposing prey, and simultaneously has functions of cutting and chopping.

[ example 7 ]

A tactics sickle or tactics firewood knife with main blades on both sides of the knife body. The following description is made with reference to fig. 15 to 24.

In fig. 15, the inner side curve of the rear hook full hook (the hook tip returns to the vertical line where the starting point is located, or the hook tip exceeds the vertical line and is also regarded as the full hook, the same below) is 1, the outer side edge line of the rear hook full hook is 2, the rear hook full hook consists of a left side straight line and a right side curve, and the straight tool bit consisting of a lower side curve of the upper side straight line and a front end vertical line is 3; in fig. 16, the right curve along the line of the outer side edge of the full hook of the rear hook is changed into an oblique straight line of 4, the front section of the upper side blade is changed into an oblique straight line of 5, and the sharp head formed by the upper and lower oblique straight lines is 6; in FIG. 17, the front section of the upper side is changed to be a curve 7, and the tip composed of the curves of the upper side and the lower side is 8; in FIG. 18, the tip composed of the upper oblique straight line and the lower curve is 9; in FIG. 19, the tip composed of the inclined straight line at the lower side of the upper curve is 10; in fig. 20, the inner side curve of the rear hook half hook (the straight line where the hook tip position and the hook start point position are located, and the straight line forms a clockwise rotation 45-degree included angle with the horizontal line, and is also a half of the 90-degree included angle of the full hook vertical line, so called half hook, the same below) is 11, the outer side edge line of the rear hook half hook is 12, and the straight tool bit is formed by a left straight line right curve, and a lower side curve (half hook curve, the same below) of an upper side straight line and a front end vertical line is 13; in fig. 21, the outer side edge of the rear hook half hook is changed into an oblique straight line 14 along the right side of the line, and the tip composed of an upper oblique straight line and a lower oblique straight line (wherein the lower oblique straight line is the half hook oblique straight line, the same applies below) is 15; the tip formed by the upper and lower curves in fig. 22 is 16; in fig. 23, the tip formed by the upper oblique straight line and the lower curve is 17; the tip of the upper curve in fig. 24, which is made up of the oblique straight line on the lower side, is 18.

The cutting tools shown in fig. 15 to 24 have an important feature that the front section of the tool body is connected to the tool bit or the tool tip, and the front section of the tool body is provided with a full hook or a half hook, so that the special functions of hooking, harvesting and felling are highlighted, and the cutting tools have the common functions of cutting and the like of common cutting tools.

The basic structure, function, principal features and advantages of the present invention have been shown and described. However, the above description is only for the specific embodiment of the present invention, the technical features of the present invention are not limited thereto, and other embodiments that can be derived by those skilled in any field or general technical field without departing from the technical solution of the present invention should be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a compromise and cut two side main sword multifunctional knife of chopping saw intensity and cutting sharpness, includes blade, cutting edge, handle of a knife, blade both sides edging is flat sword or tooth sword or half tooth sword, its characterized in that: the length of the edge on two sides of the knife body without the knife back is more than one half of the length of the knife body, the edge angles or grinding modes or the edge cutting times on two sides are different except that the knife head or the knife tip is not limited, so that one side of the knife body is provided with a high-strength edge suitable for chopping, chopping or sawing, and the other side of the knife body is provided with a high-sharpness edge suitable for cutting, chipping or cutting;

the sharpening times do not include the very young sharpening or the very young cutting times with the edge face width of less than 0.5 mm;

the higher strength edge is a strong edge;

the edge with larger sharpness is a sharp edge;

the strong or sharp edge is the main edge.

2. The multifunctional double-sided main-edge knife with both chopping saw strength and cutting sharpness as claimed in claim 1, wherein: the two sides of the knife body are flat ground, when only one time of sharpening is carried out, one side is a large-angle flat ground edge, the other side is a small-angle flat ground edge, when one side of the two side of;

when the final sharpening on one side or two sides of the knife body needs convex sharpening, only the large-angle flat sharpening blade in the flat sharpening blades on the two sides of the knife body is set as a large-angle convex sharpening blade, and simultaneously the small-angle flat sharpening blade is set as a small-angle convex sharpening blade or a small-angle non-convex sharpening blade, wherein the convex sharpening blade angle is an included angle formed by intersecting two planes of a convex sharpening blade edge line and a position line on a convex sharpening surface which is parallel to the convex sharpening blade edge line and is at a vertical distance of 1 mm;

when the final sharpening on one side or two sides of the knife body needs concave sharpening, only the large-angle flat sharpening blade in the flat sharpening blades on the two sides of the knife body is set as a large-angle concave sharpening blade or a large-angle non-concave sharpening blade, and simultaneously the small-angle flat sharpening blade is set as a small-angle concave sharpening blade, wherein the concave sharpening blade angle is an included angle formed by intersecting a concave sharpening blade edge line and two planes on which position lines on a concave sharpening surface which is parallel to the concave sharpening blade edge line and is perpendicular to the concave sharpening surface at a distance of 1 mm are located;

the large angle is not less than 30 degrees;

the small angle is no greater than 44 °;

when the edge of the convex grinding surface farthest from the cutting edge line is positioned on the convex grinding surface, if the vertical distance between the position line and the convex grinding edge line is greater than 0.5 mm but less than 1 mm, calculating an included angle formed by the intersection of the two planes according to the position lines on other grinding or non-grinding surfaces at the position of 1 mm;

and when the position line on the concave grinding surface is at the edge farthest from the cutting edge line on the concave grinding surface, if the vertical distance between the position line and the concave grinding edge line is more than 0.5 mm but less than 1 mm, calculating the included angle formed by the intersection of the two planes according to the position lines on other grinding or non-grinding surfaces at the position of 1 mm.

3. The multifunctional double-sided main-edge knife with both chopping saw strength and cutting sharpness as claimed in claim 1, wherein: one side or two sides of the knife body are provided with two-time edging, when one edging is convex grinding edging, the secondary edging at one side is flat grinding edging or concave grinding edging, when one edging is concave grinding edging, the secondary edging at one side is flat grinding edging or convex grinding edging, when the secondary edging is based on the primary edging in non-flat grinding modes such as convex grinding or concave grinding, the secondary edging is regarded as only one edging at one side and is set to be a large-angle edging or a small-angle edging and a combination in two sides of the knife body according to the above when only one edging is carried out.

4. The multifunctional double-sided main-edge knife with both chopping saw strength and cutting sharpness as claimed in claim 1, wherein: when the grinding mode of the last sharpening on one side or two sides of the knife body is chisel grinding or single-side convex grinding or single-side concave grinding, the angle of the last sharpening is calculated, set to be a large-angle edge or a small-angle edge and the combination of the last sharpening and the two sides of the knife body are combined respectively according to the mode that the last sharpening is flat sharpening or convex sharpening or concave sharpening.

5. The multifunctional double-sided main-edge knife with both chopping saw strength and cutting sharpness as claimed in claim 1, wherein: the two sides of the knife body are provided with marks for distinguishing and indicating the strong edges and the sharp edges, the marks are composed of short lines which are round, extend symmetrically left and right under the circle by taking a tangent point as a center, long lines which extend from the tangent point to the knife handle on the circle or long lines which extend from the position closest to the knife handle on the circle to the knife handle, the short lines or the long lines are parallel to the longitudinal center line of the knife body, the sharp edges are arranged on one side of the short lines, the strong edges are arranged on one side of the long lines, and the upper and lower positions of the long lines and the short lines are changed along with the strength and weakness of the open edges on the upper side and;

the mark for distinguishing and indicating the strong edge and the sharp edge is a strong sharp edge mark;

the longitudinal center line of the knife body is a center line extending from the knife handle to the knife head or the knife tip.

6. The multifunctional double-sided main-edge knife with both chopping saw strength and cutting sharpness as claimed in claim 1, wherein: the claw hammer is characterized by further comprising a cutter tail which is a plane vertical to the cutter body, extends from one side of the plane to be in a claw shape which is bent towards the cutter body and provided with a V-shaped opening, and is integrated with the cutter handle to form the claw hammer capable of being knocked by the plane hammer, nailed by the claw and held by the cutter handle.

7. The double-sided main-edge multifunctional knife for chopping saw strength and cutting sharpness according to claim 1, 2, 3, 4 or 5, wherein: one side of the knife body is a chopping edge, and the other side is a cutting edge, so that the tactical kitchen knife with the main edges at two sides is formed.

8. The double-sided main-edge multifunctional knife with both chopping saw strength and cutting sharpness as claimed in claim 1 or 2 or 3 or 4 or 5 or 6, wherein: the tactical camp knife with the main blades on two sides is further composed of a knife body, wherein one side of the knife body is a chopping or sawing blade, the other side of the knife body is a cutting or chipping or cutting blade, and the tail of the knife body is a knife tail claw hammer head.

9. The double-sided main-edge multifunctional knife for chopping saw strength and cutting sharpness according to claim 1, 2, 3, 4 or 5, wherein: the front section of the straight blade edge on one side of the blade body is transversely protruded and connected with the blade head or the blade tip to form a transversely convex blade abdomen, thus forming the double-side main-blade tactical hunting blade.

10. The double-sided main-edge multifunctional knife for chopping saw strength and cutting sharpness according to claim 1, 2, 3, 4 or 5, wherein: one side of the front section of the knife body, which is connected with the knife head or the knife tip, is a rear hook full hook or a rear hook half hook to form a double-side main-blade tactical sickle or a double-side main-blade tactical firewood knife.

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