TWI754192B - Cutter wheel capable of adjusting blade sharpness through changing blade included angles - Google Patents

Abstract

A cutter wheel capable of adjusting blade sharpness through changing blade included angles includes a wheel body, and a plurality of cutting teeth formed along an outer periphery of the wheel body. Each cutting tooth has two cutting surfaces connected together, and a cutting edge formed at a convergence of the cutting surfaces and extending from two sides of a tooth crest to two tooth roots. The tooth crest is disposed at the outermost periphery of the wheel body. The cutting edges formed at different places of the wheel body have different included angles defined by two relative cutting surfaces to thereby provide the cutting edges of the cutter wheel with different sharpness, and effectively increase the tolerance of pressure fluctuation of the cutter wheel. Thus, cutting quality can be ensured when high pressure fluctuation is applied on the cutting teeth, thereby getting adapted to large area glass cutting preferably, increasing the mass production yield effectively, and increasing the cutting stability.

Description

A cutting wheel that adjusts the sharpness through the included angle of the blade

The present invention relates to a cutting tool, in particular to a cutting wheel that adjusts the sharpness through the included angle of the blade.

At present, glass substrates are widely used in various parts of various products, such as screens, casings, etc. In order to reduce the possibility of scratches or cracks on the glass substrates, the glass substrates are usually strengthened. During the manufacturing process, the glass substrates need to be cut into Smaller size glass substrates are suitable for the application of various devices; however, tempered glass substrates are highly responsive, and the cracks generated during the cutting process are difficult to control. Therefore, how to cut the tempered glass substrates and make the glass substrate cutting process along the Splitting of scheduled cutting lines is an important issue in the industry.

In the cutting field of the existing liquid crystal display glass, a cutting wheel is used to cut the glass, and the cutting wheel includes a cutting edge, a disc surface of the cutter wheel and a shaft hole in the center of the cutter wheel for installing the cutter shaft, wherein The cutting edge of the cutter is usually V-shaped, which is convenient for cutting into glass, and the material of the cutter wheel is mainly diamond, polycrystalline or polycrystalline diamond, cemented carbide or other high hardness materials.

At present, the thickness of glass substrates, especially the glass used in liquid crystal displays, is getting thinner and thinner from 2mm to 0.1mm, and the hardness is getting higher and higher, which makes the pressure, cutting technology, breaking efficiency and other requirements and precision requirements during cutting higher. At the same time, more requirements are put forward for the depth of glass cutting, the depth of cracking and the time of cracking in the glass cutting process, which poses a great challenge to the research and development of the cutter wheel.

In the process of TFT (Thin Film Transistor, thin film field effect transistor) glass cutting, in some cases, it is necessary to strictly control the sharpness of the cutter wheel. Too sharpness will cause the glass to crack in advance and cannot be smoothly transferred to the next process. In the present application, the change of the included angle of the toothed edge is designed to reduce the sharpness of the toothed edge after cutting into the glass, so as to realize the control of the extension of the splitting time, so that the glass will not be cracked in advance before being transferred to the next process; therefore, in the process of cutting strengthened glass Generally speaking, the blade cutting into the glass should not be too sharp for the first time. If it is too sharp, the tempered glass will be split into pieces. However, after cutting, the sharpness of the blade teeth is required to accelerate the downward penetration force. The angle between the tip of the blade and the root of the blade is sharpened.

Furthermore, with the large-scale production of the 10th generation line (the 10th generation LCD panel line) and the 10.5th generation line, the glass format is getting larger and larger, and the large-format glass cannot guarantee that each part of the glass format is subject to the same Cutting pressure, the fluctuation of this cutting instability increases, so that some parts of the glass are too stressed and cracked in advance, while some local forces are too small to crack, which is used for mass production cutting of TV panels such as 70 inches to 100 inches. It caused a lot of trouble, so it really needs to be improved.

Therefore, the purpose of the present invention is to provide a cutting wheel that adjusts the sharpness through the included angle of the blade, so that the cutting wheel can meet the cutting operations with different sharpness requirements, and effectively improve the mass production yield and cutting stability.

Therefore, the present invention provides a cutting wheel for adjusting the sharpness through the included angle of the blade, wherein each cutting tooth of the cutting wheel has two tangent surfaces, and one is formed at the junction of the two tangent surfaces and extends from both sides of the tooth top. The cutting edge to the second tooth root, and the aforesaid tooth top is arranged at the outermost edge of the wheel body, and the cutting edge is gradually extended from the tooth root to the tooth top, and then extends from the tooth top to another cutting edge At the root of the tooth, the cutting edges are not on the same circumference. In addition to initially controlling the sharpness of the cutting wheel, at the same time, it can be added that the cutting edges are located at different positions of the wheel body, and the two cut surfaces show different included angle changes. , so that the cutting blades with different sharpness can be formed on the cutting wheel, so the cutting wheel can be used for cutting operations that require different sharpness requirements, and can be more suitable for large-format glass. Cutting can effectively improve cutting quality and mass production yield.

The foregoing and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings.

1(a) and 1(b), the present invention is the first preferred embodiment of the cutting wheel 3 for adjusting the sharpness through the included angle of the blade. The cutting wheel includes a wheel body 31, and a plurality of The cutting teeth 32 on the outer periphery of the body 31; wherein, each cutting tooth 32 has two adjacent tangent surfaces 321, and one is formed at the junction of the two tangent surfaces 321 and extends from both sides of the tooth top 323 to the two tooth roots 324. The cutting edge 322, and the aforementioned tooth top 323 is disposed at the outermost edge of the wheel body 31, and the cutting edge 322 gradually extends from the tooth root 324 to the tooth top 323, and then extends from the tooth top 323 to another. The root 324 of a cutting tooth 32 is in the state shown in FIG. 1( a ), the tip 323 of each cutting tooth 32 is formed into a sharp shape, and each cutting edge 322 is formed from the root 324 to the tip 323 In the concave arc state, or as shown in FIG. 2( a ) and FIG. 2( b ), the tooth crest 323 of each cutting tooth 32 forms an arc shape, and each cutting edge 322 goes from the tooth root 324 to the tooth crest The 323 forms a convex arc state, so it can pass through the cutting edge 322 from the tooth root 324 to the tooth top 323. In addition, the bottom of each section 321 can be as shown in Figure 1 (a), Figure 2 (a) is a plane shape, or can be a concave arc shape as shown in FIG. 3(a) and FIG. 3(b), and the present embodiment is described below by taking the bottom of the cut plane as an example to show a plane shape.

1(c) and FIG. 1(d), from the radial section of the cutting edge 322 of each cutting tooth 32 to the section of the center of the wheel body 31, the cutting edge 322 is at different positions of the wheel body 31, The two cut surfaces 321 show different included angle changes, that is, from the tooth top 323 to the tooth root 324, the included angle 322a of the two cut surfaces 321 gradually increases, so that the cutting edge 322 of the tooth top 323 can be controlled after cutting The cutting edge 322 will gradually decrease the sharpness of the cutting edge 322 as the angle between the two cut surfaces 321 increases; conversely, the tooth top 323 can also be set to the position of the tooth root 324, and the angle 322a of the two cut surfaces 321 is gradually reduced, so that the cutting edge 322 will gradually increase the sharpness of the cutting edge 322 due to the reduction of the included angle 322a of the two cut surfaces 321, and in this embodiment, the tooth top 323 is set to the position of the tooth root 324 below. , the included angle 322a of the two tangent planes 321 is gradually increased as an example.

Referring to FIG. 1( e ), when the cutting wheel 3 is used, it is erected on a cutting machine (not shown in the figure) to cut a glass plate 4 , because the cutting edge 322 of the tooth top 323 is located on the wheel body 31 Therefore, the cutting edge 322 of the tooth top 323 will first contact the glass plate 4 to cut the glass plate 4, and the two cutting surfaces 321 of the cutting edge 322 from the tooth top 323 to the tooth root 324 The included angle 322a is gradually increased, so the sharpness of the cutting edge 322 will decrease as it approaches the tooth root 324, which can effectively prevent the cutting wheel 3 from being too sharp during the cutting process, thereby preventing the glass plate 4 from being damaged. In the case of early cracking, in addition to ensuring cutting quality, the cutting edge 322 is designed with an arc or concave arc from the tooth top 323 to the tooth root 324, which also helps to control the cutting sharpness of the cutting edge 322. Under the double-change design of the different included angles of the cut surfaces 321, it can increase the cutting application range of the cutting wheel 3 when it responds to glass plates 4 with different required hardnesses, and also relatively improve the tolerance of the cutting wheel 3 to pressure fluctuations, so that the Each of the cutting teeth 32 can ensure the same cutting quality under the condition of larger pressure fluctuation, so as to better adapt to the cutting of large-format glass, effectively improve the production yield and cutting stability, and ensure the cutting quality.

4( a ) and FIG. 4( b ) the second preferred embodiment of the cutting wheel 3 for adjusting the sharpness through the included angle of the blade of the present invention, the cutting wheel 3 still includes the wheel body 31 and the cutting teeth 32 and other components , and the aforementioned components and the purpose to be achieved are the same as those of the first embodiment, and will not be described in detail, especially: in this embodiment, the cutting edge 322 is formed with a plurality of segments L, and each segment L has two cut surfaces 321 The included angles 322a are the same, and at least a section of the cutting edge 322 on each cutting tooth 32 is cut off, so that a bladeless section 325 is formed on the two cutting surfaces 321; therefore, the cutting edge 322 is formed with a plurality of sections L, And the included angle 322a of the two cut surfaces 321 in each section L is the same, so that the cutting edge 322 is tapered in sections, so it is easier to control the sharpness of the cutting wheel 3 in production, so as to improve the cutting When the cutter wheel 3 is outside the cutting application range, and the bladeless section 325 is timely provided, the bladeless section 325 will not cause a cutting effect during the cutting process, and the sharpness of the first cutting edge 322 can also be controlled. At the same time, the bladeless section 325 not only has the function of adjusting the sharpness of the cutting edge, but also has the function of removing chips during the cutting process, which makes the cutting process smoother and effectively improves the cutting quality.

Referring to Figure 5(a) and Figure 5(b), the third preferred embodiment of the present invention is the cutting wheel for adjusting the sharpness through the included angle of the blade, the cutting wheel 3 still includes the wheel body 31 and the cutting teeth 32 and other components, The above-mentioned components and the purpose to be achieved are the same as those of the first embodiment, which will not be described in detail, especially: the cutting edge 322 of each cutting tooth 32 extends from the tooth root 324 to the tooth crest 323, and the tooth crest 323 extends to another. The cutting edge 322 of the tooth root 324 of a cutting tooth 32 has at least two arcs 3221 with different radians, and a corner 3222 is formed between any two arcs 3221, and the cutting edges 322 on the different arcs 3221 form different tangent surfaces 321; , in addition to the original design of the cutting surface 321, plus the change of the cutting edge 322 extending from the tooth root 324 to the tooth top 323, if the cutting edge 322 has at least two arcs 3221 with different radians, through complementary Under the design, the sharpness of the cutting wheel 3 can have a larger adjustment range, and the tolerance of the cutting wheel 3 to pressure fluctuations can be improved; b), at least a section of the cutting edge 322 can be cut off on each cutting tooth 32, so that a bladeless section 325 is formed on the two cutting surfaces 321, and more different transformation forms are formed.

To sum up the above, the cutting wheel of the present invention adjusts the sharpness through the included angle of the blade, each cutting tooth has two tangent surfaces, and a cutting wheel formed at the junction of the two tangent surfaces and extending from both sides of the tooth top to the two tooth roots. The cutting edge is arranged at the outermost edge of the wheel body, and the cutting edge is located at different positions of the wheel body, and the two cut surfaces show different angle changes, so that the cutting wheel can be formed on the cutting wheel. The cutting edges with different sharpness can effectively improve the tolerance of the cutting wheel to pressure fluctuations, so that the cutting teeth can ensure the same cutting quality in the case of larger pressure fluctuations, so that they can better adapt to the cutting of large-format glass, Effectively improve mass production yield and cutting stability.

However, the above descriptions are only to illustrate the preferred embodiments of the present invention, and should not limit the scope of implementation of the present invention. , shall still fall within the scope covered by the patent of the present invention.

[this invention] 3: Cutting wheel 31: Wheel body 32: Cutting Teeth 321: Cut planes 322: Cutting Edge 323: Addendum 324: Root 325: No blade segment 322a: Angle of cutting edge L: Section of the cutting edge 3221: Arc 3222: Corner

FIG. 1( a ) is a schematic perspective view of the first preferred embodiment of the present invention.

FIG. 1(b) is a schematic plan view of the first preferred embodiment of the present invention.

Fig. 1(c) is a cross-sectional view of A-A in Fig. 1(b).

FIG. 1(d) is a cross-sectional view of B-B in FIG. 1(b).

FIG. 1(e) is a schematic diagram of the operation of the first preferred embodiment of the present invention.

FIG. 2( a ) is a schematic diagram of another variation of the first preferred embodiment of the present invention.

FIG. 2(b) is a schematic diagram of another variation of the first preferred embodiment of the present invention.

FIG. 3( a ) is a schematic diagram of another variation of the first preferred embodiment of the present invention.

FIG. 3(b) is a schematic diagram of another variation of the first preferred embodiment of the present invention.

FIG. 4( a ) is a schematic perspective view of the second preferred embodiment of the present invention.

FIG. 4(b) is a schematic plan view of the second preferred embodiment of the present invention.

FIG. 5( a ) is a schematic perspective view of the third preferred embodiment of the present invention. FIG. 5(b) is a schematic plan view of the third preferred embodiment of the present invention. FIG. 6(a) is a schematic diagram of another variation of the third preferred embodiment of the present invention. FIG. 6(b) is a schematic diagram of another variation of the third preferred embodiment of the present invention.

3: Cutting wheel

31: Wheel body

32: Cutting Teeth

321: Cut

322: Cutting Edge

323: Addendum

324: Root

Claims (6)

A cutting wheel for adjusting the sharpness through the included angle of the blade, which comprises a wheel body, and a plurality of cutting teeth formed on the outer periphery of the wheel body; it is characterized in that: each cutting tooth has two connected cut surfaces, and one is formed in the The cutting edge where the two tangent planes meet, the cutting edge has a tooth top and two tooth roots located on both sides of the tooth top, and the aforesaid tooth top is arranged at the outermost edge of the wheel body, and the cutting edge The blade system gradually extends from one of the two tooth roots to the tooth top, and then extends from the tooth top to the other tooth root of the two tooth roots; at the same time, from the radial section of the cutting edge to the tooth top In the section of the center of the wheel body, the cutting edge is at different positions of the wheel body, and the two sections show different included angle changes. According to the first item of the scope of the patent application, the cutting wheel for adjusting the sharpness through the included angle of the blade, wherein the cutting edge is formed with a plurality of sections, and the included angles of the two cut surfaces of each section are the same. According to the first item of the scope of the patent application, the cutting wheel for adjusting the sharpness through the included angle of the blade, wherein at least a section of the cutting edge on each cutting tooth is cut off, so that a bladeless section is formed on the two cutting surfaces. According to the first item of the scope of the patent application, the cutting wheel for adjusting the sharpness through the included angle of the blade, wherein the cutting edge extends from both sides of the tooth top to the two tooth roots, and the included angle between the two cutting surfaces gradually increases. According to the first item of the scope of the patent application, the cutting wheel for adjusting the sharpness through the included angle of the blade, wherein the cutting edge extends from both sides of the tooth top to the two tooth roots position, the angle between the two planes is gradually reduced. According to the cutting wheel for adjusting the sharpness through the included angle of the blade according to item 1 of the scope of the patent application, each cutting edge has at least two arcs with different radians, and a corner is formed between any two of the arcs, and the above-mentioned arcs with different radians The cutting edge on the line has different facets.

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