TWI638710B - Cutting edge structure of cutting tool - Google Patents

Abstract

The invention relates to a cutting edge structure of a cutting tool, which is characterized in that a metal oxidant is used as a catalytic catalyst on a metal surface of a cutting edge of a cutting tool, so that the non-metallic diamond is combined with the metal, so that the metal surface of the cutting edge of the cutting tool is formed with diamonds. The composite material of the layer, thereby changing the physical and chemical properties of the cutting edge of the cutting tool, effectively improving the hardness and shear slip resistance of the cutting edge of the cutting tool, so that the cutting tool can utilize the hardness of the diamond grain. When the cutting edge cuts a hard, tough material such as a stainless steel plate, it can use the fine diamond grain protrusion to bite the initial shear to prevent the shearing from slipping when the shearing force is applied. Faster shearing, improved shear efficiency, and abrasion resistance, maintaining the edge of the cutting edge for a long time, increasing the number and length of shears, increasing durability and extending its use The life span, in addition, because the protruding part of the diamond is extremely detailed, it is not used as a ruler for the edge of the cut of the cut object, so that the cut opening can be more flat than the existing one.

Description

Cutting edge structure of the cutting tool

The invention belongs to a technology for improving surface hardness and structure, in particular to a cutting edge structure of a cutting tool, thereby effectively improving the hardness and shear slip resistance of the cutting edge of the cutting tool, and can maintain the cutting for a long time. The sharpness of the blade and improve the cutting efficiency.

The shearing tool generally used for cutting mainly has two opposite cutting edges, and the rear ends of the two cutting edges respectively have a relatively symmetrical pivoting handle for the user to operate the relative bending of the cutting edge through the grip. The two cutting edges respectively have opposite and adjacent cutting edges, so that the two cutting edges can be cut with adjacent adjacent cutting edges when the cutting edges are relatively closed, and the cutting edge hardness of the cutting edges is effective for cutting. It needs to be larger than the material to be cut, and the pressure resistance of the cutting edge should be sufficient to reduce the wear of the cutting edge of the cutting edge due to long-term use, which affects the shearing effect and shortens the service life of the cutting tool; For example, shearing iron (or stainless steel), branches, cardboard, plastic shears, because the hardness or pressure resistance of such scissors is close to the hardness and pressure resistance of the cutting edge (especially Stainless steel skin), so there are the following problems during shearing; such as:

1. Poor shearing effect: Since the cutting edge of the general cutting tool is made of metal material by heat treatment to increase the hardness, the hardness is only slightly higher than the hardness of the sheared object, and the cutting edge of the cutting edge Generally, it is linear, because the area is insufficient, so the pressure resistance during shearing is not enough, and the shearing cannot be performed smoothly. Therefore, the shearing effect is limited, and it is not even effective to cut hard and tough stainless steel skin. material.

2, easy to leave dents, burrs: also due to the hardness and pressure resistance of the cutting edge of the cutting tool, Therefore, when the force is applied for shearing, since the cutting edge of the cutting edge of both sides is pressed by the V-shaped contact, the cutting edge of the cutting edge will slip relative to the sheared object when the force is applied. Therefore, in order to solve this problem, some of the shearing tools will form a series of sharp teeth on the cutting edge side of the cutting edge. However, since these sharp teeth are additionally formed, the sharp teeth are large, and it is easy to cut the edges to form a tooth mark when engaging. And it is easy to produce burrs after shearing, which not only destroys the beauty of the shear line, but even cuts the user, so secondary processing is required, resulting in unnecessary waste of time.

3. Poor shearing efficiency: As mentioned above, due to the insufficient hardness and pressure resistance of the existing shearing tools, it is not easily pressed and sheared by the reaction force of the shearing material, and is further affected by the slippage during shearing. The distance of the secondary shearing is also shortened, so that the length of the shearing work is longer, and the invisible fatigue of the user's hand causes the shearing speed to be slower, so the shearing efficiency is not good, especially Sheer efficiency is lower when faced with harder, tougher materials.

4, short durability: In addition, when the cutting edge of the cutting edge of the cutting edge is passivated due to wear, it needs to be re-ground to ensure the profit of the cutting edge, and the interval between each regrind and the shearable The length is durability, and the existing shears are affected by the hardness and pressure resistance of the cutting edge, and the phenomenon of continuous slipping during the shearing process makes the cutting edge of the cutting edge extremely easy to passivate. The need for continuous grinding, not only wastes time, but also affects the progress of the cutting work.

5, short service life: comprehensive of the above problems, due to the low shear effectiveness of the existing shears, so that the existing shearing tools to increase the reaction force, the loss of each part and the active point is also large, causing its easy damage At the same time, in order to improve the hardness of the cutting edge of the cutting tool, it needs to be subjected to heat treatment such as annealing and quenching, so that internal stress exists inside the cutting edge, and fine cracks may be formed on the surface, causing the shearing device to be subjected to shearing. Micro-cracks expand and break, shortening the life of the tool.

In other words, the existing shearing tools for iron sheets (or stainless steel skins) are not easy to slip due to the hardness and pressure resistance of the cutting edges, and the shearing effect is easy to slip. In order to solve this problem, a manufacturer has applied a diamond layer on the surface of the cutting edge of the cutting tool by electroplating to increase the hardness. However, since it is adhered by electroplating, it is not Completely combined with the cutting edge metal, it can not really change the physical and chemical properties of the cutting edge, and the diamond grain of the diamond layer is easily peeled off during the shearing force application, so the hardness and the pressure resistance of the cutting tool cannot be truly solved. The problem, and how to solve the above problems, is an important issue in the industry.

In view of the above, the present inventors have intensively studied the problems faced by the aforementioned shearing iron shears, and actively pursued the solution through the experience of the inventors for years of relevant development, and have been continuously researching and developing. Finally, a cutting edge structure of the cutting tool was successfully created to overcome the troubles and inconveniences caused by the lack of hardness and shear slip of the scissors.

Therefore, the main object of the present invention is to provide a cutting edge structure of a cutting tool, thereby effectively changing the physical and chemical properties of the cutting edge of the cutting tool, and improving the hardness of the cutting edge of the cutting tool and the anti-slip effect during cutting. It can effectively cut harder and tougher materials, such as iron, stainless steel, cardboard, branches, etc., to improve the shearing effect.

Moreover, the second main object of the present invention is to provide a cutting edge structure of a cutting tool, which can effectively improve the hardness of the cutting edge and the shear slip resistance, thereby reducing the wear of the cutting edge and effectively maintaining the profitability thereof. It can improve its shear efficiency.

In addition, another main object of the present invention is to provide a cutting edge structure of a cutting tool, which can utilize the fine bite of the diamond to avoid any sliding of the shearing material during the shearing process, and does not cause tooth marks and burrs, and can eliminate In addition to improving the cutting quality, it can improve the durability of the cutting tool and prolong its service life.

To this end, the present invention mainly realizes the above-mentioned various objects and effects through the following technical means, which are formed by two operating levers being staggered and pivoted, and each operating lever has a relative at both ends of the pivoting point. a cutting edge and an opposite grip, and the two cutting edges respectively have a relative Adjacent cutting edge, the two cutting edges have a blade back on the side different from the cutting edge, and another edge edge and the opposite cutting edge are formed with a cutting edge, characterized in that; Each of the cutting edges combines a diamond layer of a series of diamond grains on the surface of the blade back to the edge of the cutting edge with a metal oxidant as a catalyst, and the back surface of the cutting edge is combined to form a composite layer with a diamond layer.

Therefore, through the specific implementation of the foregoing technical means, the cutting edge of the invention has a diamond layer with high hardness, thereby improving the overall shearing effect and efficiency, greatly improving the utility thereof, and increasing the added value thereof, and Can improve its economic benefits, and further have the following effects;

1. The cutting edge of the cutting tool of the present invention is combined with a diamond layer having a plurality of diamond grains on a blade back surface to form a non-metallic diamond-metal composite material, which greatly improves the edge of the cutting edge. The hardness, combined with the diamond characteristics of the diamond layer, can make the edge of the cutting edge improve the pressure resistance during shearing, and can smoothly cut the sheared object, effectively improve the shearing effect, and can even be effective. Cut hard, tough materials such as stainless steel.

2. Since the hardness and pressure resistance of the cutting edge of the cutting tool of the invention are improved, and the back surface of the blade has a diamond layer, when the force is applied for shearing, the edge of the cutting edge of both sides is contacted by the edge of the cutting edge. When the sheared object is pinched, since the diamond layer is composed of a plurality of fine diamond grains, the crystal shaped angles exposed by the diamond crystal grains can effectively bite the sheared object, so when the force is applied for shearing The sheared object does not slip, and can be easily cut and applied. At the same time, because the diamond grains are extremely fine, the bite is not formed at the sheared edge of the sheared material when the bite is bitten. After cutting, no burrs are generated, which not only improves the appearance of the shear line of the cut object, but also does not cause the problem of cutting the user, and eliminates the need for secondary processing and trimming of the cut port, thereby effectively saving the cutting time and cost.

3. Since the hardness and pressure resistance of the shearing device of the present invention are improved, when subjected to When the shearing object is subjected to the reaction force of the shearing material, it can be effectively pressed and sheared. At the same time, as described above, the shearing device of the present invention can effectively bite the sheared material due to the diamond layer of the diamond layer during shearing. It is not easy to slip between the two, so the shear length can be achieved every time, and the thickness of the effective shearing can also be increased. Therefore, compared with the prior art, the shearing time of the present invention is completed when the same length of shearing distance is completed. The cutting efficiency can be shortened, and the problem of the user's hand fatigue can be reduced, and the shearing speed can be effectively improved. Therefore, the shearing efficiency of the present invention is better.

4. As mentioned above, since the shearing tool of the present invention increases in effectiveness and efficiency when shearing, and at the same time, the hardness and pressure resistance of the cutting edge are improved, so the edge of the cutting edge of the cutting edge is worn. The passivation time is lengthened, which increases the interval between re-grinding and sharpening, which improves durability and reduces the number of grinding edges without affecting the progress of the cutting work.

5. Furthermore, the shearing device of the present invention has a diamond layer bonded to the back of the cutting edge, and the non-metallic diamond crystal grain of the diamond layer can be effectively combined into the back metal, which can overcome the crack of the metal due to heat treatment. The strength of the metal is improved, and the hardness, pressure resistance and the anti-slip effect of the cutting edge are also improved, and the probability of cutting edge damage of the cutting tool is reduced, which can effectively extend the service life of the cutting tool.

The following is a description of the preferred embodiments of the present invention, and the detailed description of the present invention will be described in detail with reference to the accompanying drawings. .

(10)‧‧‧Operation lever

(11)‧‧‧ cutting edge

(12)‧‧‧ cutting edge

(13)‧‧‧ Back

(14) ‧‧‧ cutting edge

(15)‧‧‧Handle

(20)‧‧‧Operator

(21)‧‧‧ cutting edge

(22)‧‧‧ cutting edge

(23)‧‧‧ Back

(24) ‧‧‧ cutting edge

(25)‧‧‧Handle

(30)‧‧‧Diamond layer

(35)‧‧‧Diamond grains

(50)‧‧‧Shears

Fig. 1 is a perspective view showing the appearance of a cutting edge structure of a cutting tool of the present invention.

Fig. 2 is a schematic view showing the planar appearance when the cutting edge structure of the cutting tool of the present invention is closed.

Fig. 3 is a schematic end elevational view showing the cutting edge structure of the cutting tool of the present invention.

Figure 4 is a partial enlarged view of the cutting edge when the cutting edge structure of the cutting tool of the present invention is opened, for Explain the state of its diamond layer formation.

Fig. 5 is a schematic cross-sectional side elevational view showing the cutting edge structure of the cutting tool of the present invention for explaining the state in which the diamond layer is formed.

Fig. 6 is a partially enlarged cross-sectional view showing the cutting edge of the cutting edge structure of the cutting tool of the present invention, wherein (A) is a state before the diamond layer is combined with the cutting, and (B) is a state in which the diamond layer is combined with the cutting.

Fig. 7 is a schematic view showing the action state of the cutting edge structure of the cutting tool of the present invention in actual shearing.

The present invention is a cutting edge structure of a cutting tool, and the specific embodiments of the present invention and its components, all of which relate to front and rear, left and right, top and bottom, upper and lower, and horizontal and vertical, are illustrated with the accompanying drawings. It is intended to facilitate the description, not to limit the invention, and to limit its components to any position or spatial orientation. The drawings and the dimensions specified in the specification may be varied in accordance with the design and needs of the specific embodiments of the present invention without departing from the scope of the invention.

The present invention is a cutting edge cutting structure of the cutting tool, as shown in Figures 1, 2 and 3, the cutting tool is formed by two operating levers (10, 20) which are alternately pivoted, and each operating rod (10, 20) at both ends of the pivotal joint, there are an opposite cutting edge (11, 21) and an opposite grip (15, 25) for the user to operate the two grips (15, 25) Controlling the relative closed shearing of the two cutting edges (11, 21) [as shown in Fig. 2] and opening [as shown in Fig. 4], and the two cutting edges (11, 21) respectively have a relative and phase The adjacent cutting edge (12, 22), and the two cutting edges (11, 21) have a blade back (13, 23) on the side different from the cutting edge (12, 22), and the blade backs (13, 23) and the edge of the adjacent cutting edge (12, 22) is formed with a cutting edge (14, 24) for the edge of the cutting edge (12, 22) when the two cutting edges (11, 21) are closed ( 14, 24) can produce relative shear effect, the above is a typical shear structure and its action principle, and is not the characteristics of the present invention, no longer 赘 As for the characteristic structure of the present invention, please refer to the fourth and fifth figures, and the cutting edges (11, 21) are utilized on the surface of the blade back (13, 23) to the edge of the blade edge (14, 24). The metal oxidant is used as a catalyst to combine a diamond layer (30) of a series of diamond grains (35), wherein the metal oxidant may be aluminum oxide, boron trioxide, germanium dioxide, chromium oxide, manganese dioxide, Ferric oxide, triiron tetroxide, copper oxide and lead tetraoxide, etc., so that the non-metallic diamond grains (35) can be combined with the back (13, 23) metal to form a composite material; 30) may extend from the tip end of the cutting edge (13, 23) to the friction surface of the cutting edge (13, 23) adjacent to the pivot point, and the diamond layer The width of (30) may cover at least one-third of the width of the entire blade back (13, 23), and the diamond grain (35) of the diamond layer (30) is metal-bonded to the blade back (13, 23). The diamond crystal grains (35) of the diamond layer (30) are buried inside the blade back (13, 23), and further, as shown in Fig. 6 (A), (B), the diamond layer of the diamond layer (30) is made. The pellets (35) can push each other (11, 21 The metal of the blade back (13, 23) causes the cracks caused by the stress of the heat treatment between the metals to be automatically close to the filling [as shown in Fig. 6(A)], so that the metal crack disappears and the blade back (13, 23) The surface is uniformly covered with the diamond layer (30) by the crystal angle of the diamond crystal grain (35), thereby changing the physical structure of the cutting edge (11, 21) back (13, 23), so that the cutting edge (11, 21) The blade back (13, 23) and the edge (14, 24) can greatly improve the hardness and shear slip resistance, and the diamond grain (35) of the diamond layer (30) is made of metal oxidant. For the catalyst, the metal surface of the blade back (13, 23) embedded in the cutting edge (11, 21) is bonded so that the metal back of the blade back (13, 23) is over the maximum diameter of the diamond die (35). The diamond crystal grain (35) of the diamond layer (30) can be firmly bonded to the blade back (13, 23) [as shown in Fig. 6(B)] without being peeled off by external force; thereby, the group composition can be effectively A cutting edge structure of a cutting tool that improves hardness and shear slip resistance.

When the shearing device of the present invention is used in actual use, as shown in Figures 1, 2, 3 and 7, when the cutting tool is used for cutting a hard, tough cutting material (50) [such as iron sheet) , stainless steel skin, cardboard, plastic board, branches, rubber strips], because the diamond layer (30) diamond crystal (35) hardness can reach Mohs hardness of 10 (synthetic diamond is 9.25, polymer diamond nano is greater than 10 For example, in the case of a stainless steel skin, the Mohs hardness is 5.5, so the cutting edge (11, 21) of the cutting tool of the present invention has a hardness much larger than that of the general cutting shear (50), so that it can effectively cut the cut. Shear (50), while the cutting edge (11, 21) of the cutting blade of the present invention is combined with a diamond layer (30) having a diamond crystal grain (35), so that when used, further Has the following effects;

1. The shearing effect can be improved: the cutting edge (11, 21) of the present invention is formed on the surface of the blade back (13, 23) by a metal oxidant combined with a diamond layer (30) having a plurality of diamond grains (35). A non-metallic diamond-metal composite material that substantially increases the hardness of the cutting edge (14, 24) of the cutting edge (11, 21) and matches the diamond characteristics of the diamond layer (30) to provide a cutting edge (14, 24) can improve the pressure resistance of the shearing is not enough, and can smoothly cut the sheared object (50), effectively improve the shearing effect, and even can effectively cut the stainless steel skin and other hard , tougher materials.

2. No additional secondary processing is required: since the hardness and pressure resistance of the cutting edge (11, 21) of the present invention are improved, and the surface of the blade back (13, 23) has a diamond layer (30), When the force is applied for shearing, since the cutting edges (12, 22) of the cutting edges (11, 21) on both sides are in contact with the cutting edge (14, 24) to sandwich the sheared object (50), due to the diamond layer (30) is composed of a plurality of fine diamond grains (35), and the crystal shaped angles exposed by the diamond crystal grains (35) can effectively bite the sheared object (50), so when the force is applied for shearing The sheared object (50) does not cause slipping, but can be easily cut and applied, and because the diamond crystal grains (35) are extremely fine, they are not bitten when they are bitten (50). The cutting edge forms a tooth mark, and the burr is not generated after the cutting, which not only improves the shear line of the object to be cut (50), but also does not cause cuts. The user's problem eliminates the need for secondary processing and trimming of the cutting port, which effectively saves cutting time and cost.

3. Significantly improve the shearing efficiency: since the hardness and pressure resistance of the shearing device of the present invention are improved, it can be effectively pressed and sheared when subjected to the reaction force of the sheared object (50) on the shearing object. At the same time, as described above, the shearing device of the present invention can effectively bite the sheared object (50) due to the diamond layer (30) diamond grain (35) during shearing, so that the two are not easy to slip, so each cut The expected length can be achieved, and the thickness of the effective shearing can also be increased. Therefore, compared with the prior art, the cutting time of the present invention can be shorter and the fatigue of the user can be reduced when the cutting distance of the same length is completed. The problem of the shearing speed can be effectively improved, so that the shearing efficiency of the present invention is better.

4. Good durability of shearing: As mentioned above, due to the shearing effect of the shearing tool of the invention, the effectiveness and the efficiency are also improved, and the hardness and pressure resistance of the cutting edge (11, 21) are improved. Therefore, the wear passivation time of the cutting edge (14, 24) of the cutting edge (11, 21) of the cutting edge (11, 21) is lengthened, so that the interval between re-grinding and polishing can be prolonged, thereby improving durability. Reduce the number of grinding edges (12, 22) without affecting the progress of the cutting work.

5. The service life of the cutting tool is long: the cutting tool of the present invention has a diamond layer (30) combined with a blade back (13, 23) of the cutting edge (11, 21), and the non-metallic diamond crystal grain of the diamond layer (30) (35) It can be effectively bonded into the metal of the blade back (13, 23), which can not only overcome the crack of the metal during heat treatment, but also improve the strength of the metal, and also improve the hardness and pressure resistance of the cutting edge (11, 21). And the anti-slip effect during shearing reduces the probability of damage to the cutting edge (11, 21) of the cutting tool, which can effectively extend the service life of the cutting tool.

In summary, it can be understood that the present invention is an excellent invention, in addition to effectively solving the problems faced by the practitioners, the effect is greatly enhanced, and the same or similar product creation or the same technical field is not seen or Open use, and at the same time have an improvement in efficacy, so the present invention has In accordance with the requirements of "innovation" and "progressiveness" of invention patents, an application for invention patents is filed according to law.

Claims (3)

A cutting edge structure of a cutting tool, which is formed by two operating rods being alternately pivoted, and each operating rod has an opposite cutting edge and an opposite grip at two ends of the pivoting point, and the two cutting edges respectively have a pair of opposite and adjacent cutting edges, wherein the two cutting edges have a blade back on a side different from the cutting edge, and a cutting edge is formed between the blade back and the opposite cutting edge, wherein each of the cutting edges is formed; The cutting edge combines a diamond layer of a series of diamond grains on the surface of the blade back to the edge of the cutting edge by using a metal oxidant as a catalyst, and the back surface of the cutting edge is combined to form a composite material with a diamond layer; A cutting edge structure of a cutting tool that can effectively improve hardness and shear slip resistance. The cutting edge structure of the cutting tool of claim 1, wherein the diamond layer may extend from a cutting edge tip to a cutting edge adjacent to the pivot point, and the diamond layer may cover at least a third of the entire blade back. a width. The cutting edge structure of the cutting tool according to claim 1, wherein the diamond layer is selected from diamond grains having a Mohs hardness of 9 or more.