阅读说明：本技术 一种高强度切断刀 (High-strength cutting-off tool ) 是由 杜彬 于 2019-11-19 设计创作，主要内容包括：本发明公开了一种高强度切断刀,包括刀柄和刀头机构,所述的刀头机构设置在刀柄的右端,本发明通过设置副切削刃和副刀头,加工时主刀头先接触工件,主切削刃和副切削刃逐步切入工件,使刀具运行负荷由零逐步增加,减少了刀具的振动,避免出现打刀的现象；通过设置刀头机构,主切削刃进行切断作业时,切断刀切下的切屑宽度小于槽的宽度,方便切屑从加工区域排出,减少切屑与工件摩擦,延长刀具使用寿命,结构简单,切削性能好,生产效率高,具有推广应用价值；通过设置主切刀,主刀头的刀尖角为90°～120°,刀尖角大于90°,增大了主刀头与工件的接触面积,提高切断刀的散热效果,降低副刀头的磨损,保持副刀头良好的导向性。(The invention discloses a high-strength cutting tool, which comprises a tool handle and a tool bit mechanism, wherein the tool bit mechanism is arranged at the right end of the tool handle; by arranging the cutter head mechanism, when the main cutting edge performs cutting operation, the width of the cutting chip cut by the cutting knife is smaller than that of the groove, so that the cutting chip is conveniently discharged from a machining area, the friction between the cutting chip and a workpiece is reduced, the service life of the cutter is prolonged, the structure is simple, the cutting performance is good, the production efficiency is high, and the popularization and application values are realized; through setting up main cutter, the tool point angle of main tool bit is 90 ~ 120, and the tool point angle is greater than 90, has increased the area of contact of main tool bit with the work piece, improves the radiating effect of cutting off cutter, reduces the wearing and tearing of vice tool bit, keeps the good guidance quality of vice tool bit.)

1. A high strength cut-off knife which is characterized in that: the high-strength cutting knife comprises a knife handle (1) and a knife head mechanism (2), wherein the knife head mechanism (2) is arranged at the right end of the knife handle (1); the cutter head mechanism (2) comprises a cutter head body (21), an auxiliary cutter head (22), a main cutter head (23), a main cutting edge (24) and an auxiliary cutting edge (25); the tool bit body (21) is arranged on the right side of the tool handle (1), the tool bit body (21) and the tool handle (1) are arranged in an integrated mode, and the size of the tool bit body (21) is matched with the size of the right side of the tool handle (1); the main cutter head (23) is arranged on the right side of the cutter head body (21), the main cutter head (23) and the cutter head body (21) are arranged in an integrated mode, and the size of the main cutter head (23) is matched with that of the cutter head body (21); the main cutting edge (24) is welded on the right side of the main cutter head (23), the main cutting edge (24) is positioned in the middle of the right side of the main cutter head (23), and the main cutting edge (24) is in a square column shape; the auxiliary cutter head (22) is arranged in the middle of the outer side of the cutter head body (21), the auxiliary cutter head (22) and the cutter head body (21) are arranged in an integrated mode, and the size of the auxiliary cutter head (22) is matched with that of the cutter head body (21); the auxiliary cutting edge (25) is arranged in the middle of the auxiliary cutter head (22), the auxiliary cutting edge (25) and the auxiliary cutter head (22) are arranged in an integrated mode, and the length of the auxiliary cutting edge (25) is the same as that of the upper end of the auxiliary cutter head (22).

2. A high strength cutting blade according to claim 1 wherein: the main tool bit (23) has a tool tip angle of 90-120 degrees; the outer side of the secondary cutting edge (25) is higher than the heights of the main cutting edge (24) and the main cutter head (23).

3. A high strength cutting blade according to claim 1 wherein: the deflection angle of the edge angle of the main cutting edge (24) is 0-5 degrees; the deflection angle of the edge angle of the secondary cutting edge (25) is-3 degrees to-5 degrees.

4. A high strength cutting blade according to claim 1 wherein: the cutter handle (1) is made of powder metallurgy materials, and the cutter handle (1) is subjected to quenching and tempering by a heat treatment furnace.

5. A high strength cutting blade according to claim 1 wherein: the right side of handle of a knife (1) be provided with the slope, and the diameter of handle of a knife (1) left end is greater than the diameter of handle of a knife (1) right-hand member, the slope of this handle of a knife (1) slope is 30 ~ 60.

Technical Field

The invention relates to the technical field of machining, in particular to a high-strength cutting-off tool.

Background

At present, a cutting tool bit used in machining is narrow, and the root of the cutting tool bit is narrower due to an auxiliary deflection angle and an auxiliary relief angle, so that the rigidity is poor, the strength is low, and vibration and tool hitting are easy to generate in machining; and because the main deflection angle of the cutting-off tool is 90 degrees, when the cutting tool cuts a workpiece, the cutting force is suddenly increased from zero to full load, vibration is easy to generate, two tool sharp angles of the cutting-off tool are smaller than 90 degrees, the heat dissipation performance is poor, the two tool sharp angles are easy to wear and poor in guidance performance, meanwhile, because the cutting-off operation is carried out in a semi-closed state, the cutting chips can only be discharged from the cut groove, but the cutting chips are shortened in length and increased in width after being bent and deformed, the cutting chip width is larger than the groove width after being deformed, the cutting chips are difficult to discharge in the groove, and once the cutting chips are blocked, the cutting tool is.

The existing cutting off cutter has the problems that the root of a cutter head is narrow, so that the rigidity is poor, the strength is low, vibration and cutter beating are easy to generate in machining, the cutting off operation is carried out in a semi-closed state, cutting scraps can only be discharged from a cut groove, the length of the cutting scraps is shortened after the cutting scraps are bent and deformed, the width of the cutting scraps is increased, the width of the cutting scraps is larger than the width of the groove after the cutting scraps are deformed, the cutting scraps are difficult to discharge in the groove, and once the cutting scraps are blocked, the cutter.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a high-strength cutting-off tool, which solves the problems that the existing cutting-off tool has poor rigidity and low strength due to narrow root part of a tool bit, vibration and tool hitting are easy to generate in processing, cutting-off operation is carried out in a semi-closed state, cutting scraps can be discharged from a cut groove only, but the cutting scraps are bent and deformed, the length is shortened, the width is increased, the width of the deformed cutting scraps is larger than that of the groove, the cutting scraps are difficult to discharge from the groove, and once the cutting scraps are blocked, the cutting is easy to hit.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a high-strength cutting tool comprises a tool shank and a tool bit mechanism, wherein the tool bit mechanism is arranged at the right end of the tool shank; the cutter head mechanism comprises a cutter head body, an auxiliary cutter head, a main cutting edge and an auxiliary cutting edge; the tool bit body is arranged on the right side of the tool handle, the tool bit body and the tool handle are integrally arranged, and the size of the tool bit body is matched with the size of the right side of the tool handle; the main cutter head is arranged on the right side of the cutter head body, the main cutter head and the cutter head body are arranged in an integrated manner, and the size of the main cutter head is matched with that of the cutter head body; the main cutting edge is welded on the right side of the main cutter head and is positioned in the middle of the right side of the main cutter head, and the main cutting edge is in a square column shape; the auxiliary cutter head is arranged in the middle of the outer side of the cutter head body, the auxiliary cutter head and the cutter head body are integrally arranged, and the size of the auxiliary cutter head is matched with that of the cutter head body; the auxiliary cutting edge is arranged in the middle of the auxiliary cutter head, the auxiliary cutting edge and the auxiliary cutter head are arranged in an integrated mode, and the length of the auxiliary cutting edge is the same as that of the upper end of the auxiliary cutter head.

The sharp angle of the main tool bit is 90-120 degrees; the outer side of the secondary cutting edge is higher than the main cutting edge and the main cutter head.

The deflection angle of the edge angle of the main cutting edge is 0-5 degrees; the deflection angle of the edge angle of the secondary cutting edge is-3 degrees to-5 degrees.

The knife handle is made of powder metallurgy materials, and the knife handle is subjected to quenching and tempering by a heat treatment furnace.

The right side of handle of a knife be provided with the slope, and the diameter of handle of a knife left end is greater than the diameter of handle of a knife right-hand member, the slope of this handle of a knife slope is 30 ~ 60.

(III) advantageous effects

The invention provides a high-strength cutting knife. The method has the following beneficial effects:

(1) according to the invention, the auxiliary cutting edge and the auxiliary cutting edge are arranged, when the main cutting edge contacts the workpiece firstly, the main cutting edge and the auxiliary cutting edge gradually cut into the workpiece, so that the operation load of the cutter is gradually increased from zero, the vibration of the cutter is reduced, and the phenomenon of cutter hitting is avoided.

(2) By arranging the cutter head mechanism, when the main cutting edge performs cutting operation, the width of the cutting chip cut by the cutting knife is smaller than that of the groove, so that the cutting chip is conveniently discharged from a processing area, the friction between the cutting chip and a workpiece is reduced, the service life of the cutter is prolonged, the structure is simple, the cutting performance is good, the production efficiency is high, and the tool has popularization and application values.

(3) According to the invention, the main cutter is arranged, the sharp angle of the main cutter head is 90-120 degrees, the sharp angle of the main cutter head is larger than 90 degrees, the contact area of the main cutter head and a workpiece is increased, the heat dissipation effect of the cutting cutter is improved, the abrasion of the auxiliary cutter head is reduced, and the good guidance of the auxiliary cutter head is maintained.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a schematic view of the structure of the cutter head mechanism of the invention.

In the figure: 1 handle of a knife, 2 tool bit mechanisms, 21 tool bit bodies, 22 auxiliary tool bits, 23 main tool bits, 24 main cutting edges and 25 auxiliary cutting edges.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.