KR20000071315A - Glass cutter wheel - Google Patents

Abstract

When scribing following the area of the closed curve, since deep vertical cracks could not be obtained, the division of the next process was not easy, and a large amount of horizontal cracks also occurred.

Deep grooves can be obtained by forming a groove at a constant pitch inclined at a certain angle with respect to the axial center direction of the glass cutting machine blade, and also greatly reduces the occurrence of horizontal cracks in the product side. It is particularly suitable for cutting closed curve areas.

Description

GLASS CUTTER WHEEL}

The present invention relates to a glass cutter wheel capable of forming inclined vertical cracks on a glass plate.

To cut a glass plate, a glass cutter wheel is used to scribe the surface of the glass plate in one direction to generate a crack (referred to as a vertical crack) downward from the surface of the glass plate, followed by stressing the glass plate to make a vertical crack. The glass plate is cut | disconnected by growing to the lower surface of a glass plate. Here, when the area of the closed curve is cut out from the glass plate 6 as shown in the latitude plane (a) of FIG. 1, the direction of the vertical crack 10 is always determined as shown in the side view shown in the middle drawing (b). When inclined in an oblique direction toward the outside, the region 6a to be cut out can be easily separated from the glass plate 6 as shown in the drawing (c) below.

For this purpose, a glass cutting machine file capable of forming an inclined vertical crack is introduced, for example, in Japanese Patent Application Laid-open No. Hei 9-278474, and the glass cutting machine file is described herein by citing the glass cutting machine file.

Fig. 2 is a view of the glass cutting machine wheel as seen from the front (scribe direction).

In the glass cutter wheel (2) installed freely with respect to the wheel cutter (1), the blade tip angle (4) on the left side with respect to the blade tip ridge line (3) is 73 °, and the blade tip angle (5) on the right side is 83 °. It is. When this glass cutting machine wheel 2 is used to scribe the glass plate 6, vertical cracks 10 inclined downward on the left side in the drawing and cracks 11 and 12 generated on the surface of the glass plate (called horizontal cracks). And the like). These horizontal cracks 11 and 12 do not contribute to the cutting of the glass plate 6, but merely reduce the value of the product. Therefore, it is necessary to suppress the occurrence of the horizontal cracks.

When FIG. 2 is the scribe of a closed curve, the area | region 6a of the right side of the vertical crack 1 turns into a product. Hereinafter, the area | region 6b of the product 6a and the left side of the vertical crack 10 is called non-product this area.

However, because of the shallowness of the vertical cracks 10 obtained here, it is difficult to divide the product 6a from the glass plate 6, and since the vertical cracks 10 are shallow, horizontal cracks occur on the surface of the glass plate in the case of the division. The quality of the product 6a was reduced.

An object of the present invention is to provide a glass cutting machine wheel capable of forming a deep vertical crack inclined to solve the above problems.

[Means for solving the problem]

The glass cutting machine wheel according to the present invention is characterized in that a groove having a predetermined angle inclined at a predetermined angle with respect to the axial center direction of the wheel is formed on the cutting edge of the disk-shaped wheel. That is, in the present invention, the cutting surface of the groove is inclined and the groove itself is inclined with respect to the axial center direction of the glass cutting machine wheel, so that the cutting amount of the groove becomes uneven on both sides of the cutting edge ridge line. The scribe subsequent to the closed curve with this glass cutting machine can greatly reduce the occurrence of horizontal cracks in the area surrounded by the closed curve to be a product, and is particularly suitable for cutting the closed curve region.

This glass cutting machine date is described here because it relates to the "glass cutting machine file" of Japanese Patent Laid-Open No. 9-188534 filed by the present applicant. This conventional glass cutter wheel is different from the glass cutter wheel of the present invention to produce vertical cracks that are not inclined. As shown in Fig. 3, the glass cutting machine wheel 21 is enlarged on the ridge lines 22 of ordinary cutter wheels (i.e., both the cutting edge angles θ1 and θ2 are the same together) as shown in the enlarged views A1 and B1. The fine protrusions 24 are formed on the ridgeline by cutting off the groove 23 '(the shape of the groove itself is not limited to this) having a U shape having a depth h at regular intervals p. As can be seen from the enlarged view B1, the shape of the groove 23 'is symmetrical on both sides, and the cut amount of the groove 23' is equal on both sides of the ridge line 22. As shown in FIG. The cross section in the line L1 shown in this enlarged view B1 is shown in FIG. The groove widths W1 and W2 from the ridge line 22 to both sides are equal to each other, and the groove depths h1 and h2 at both ends of the groove are also equal to each other. That is, the cutting surface 23a 'of the groove 23' is in parallel with the axial center direction of the glass cutting machine wheel 21. As shown in FIG.

1 is a view showing a state of cutting the area of the closed curve.

2 is a view showing a cutting method interposed in the publication.

3 is a view of a glass cutting machine wheel included in the publication.

4 is an enlarged view of a blade ridge line part in FIG. 3;

5 is a view of a glass cutting machine wheel showing a first embodiment of the present invention.

6 is a partially enlarged cross-sectional view of FIG. 5.

7 is a view showing the mounting of the cutter head of the glass cutter wheel of the present invention.

8 is a view in which the glass cutting machine wheel of the present invention is integrally formed with the shaft;

9 is a view showing cracks on the glass surface when scribed with a glass cutting machine wheel of the present invention.

10 is an enlarged view of a crack when the pieces of glass divided by the scribe of FIG. 9 are faced to each other;

FIG. 11 is a view showing vertical cracks generated at the time of scribing of FIG.

FIG. 12 shows cracks in the glass surface when scribed with the glass cutter wheel of FIG. 3; FIG.

FIG. 13 is an enlarged view of a crack when the pieces of glass divided by the scribe of FIG. 12 are faced to each other; FIG.

FIG. 14 is a view showing vertical cracks generated at the time of scribing of FIG.

15 is a partially enlarged view of a glass cutting machine wheel showing a second embodiment of the present invention.

16 is a partially enlarged view of a glass cutting machine wheel showing a third embodiment of the present invention.

17 is a partially enlarged view of a glass cutting machine wheel showing a fourth embodiment of the present invention.

18 is a view showing a method of forming a groove in the glass cutting machine wheel of FIG.

19 is a view showing a method of forming a groove in the glass cutting machine wheel of the present invention.

20 is a view of a circular scriber applying the glass cutting machine wheel of the present invention.

Figure 21 is a front view of the automatic circular scriber to which the glass cutting machine wheel of the present invention is applied.

22 is a front view of an automatic glass scriber to which the glass cutting machine wheel of the present invention is applied.

Figure 23 is a side view of the automatic glass scriber to which the glass cutting machine wheel of the present invention is applied.

24 shows an example of scribing when the apparatus of FIG. 22 is used.

25 is a view showing a manual glass cutter.

FIG. 26 is an enlarged view of a photomicrograph corresponding to FIG. 9. FIG.

FIG. 27 is an enlarged view of a photomicrograph corresponding to FIG. 11. FIG.

FIG. 28 is an enlarged view of a photomicrograph corresponding to FIG. 12.

FIG. 29 is an enlarged view of a photomicrograph corresponding to FIG. 14. FIG.

* Explanation of symbols for main parts of the drawings

6: glass plate 6a: product

22: knife tip ridge 23: groove

23a: cutting surface 24: protrusion

25, 26: glass cutting wheel 25b: shaft

31 to 33: groove 35: circular scriber

36: sucker 37: fixed shaft

38: arm 39: thumbscrew

41: table 42: rotating table

46: cutter head 51: disk grinder

K1: Vertical crack C1, C2: Horizontal crack

In the present invention, by forming a groove inclined with respect to the axial center direction, it is possible to form an inclined vertical crack without deteriorating the scribing performance of the glass cutting machine itself having the projection of FIG. Several experiments confirmed that the generation of horizontal cracks can be greatly reduced. The reason why the vertical crack is inclined is that the ridgeline at the time of scribing causes slight misalignment in the groove portion, which is the result of the pressure imbalance on the glass plate.

Moreover, this invention is used for various products and manufacturing methods using the above-mentioned glass cutting machine wheel. For example, the circular scriber according to the present invention has a cutter head mounted on a predetermined portion of an arm installed so as to rotate freely on a glass plate, and the above-mentioned glass cutting machine wheel is mounted on the cutter head, and the arm is turned around. It is provided with a motor for.

The automatic glass scriber according to the present invention is an automatic glass scriber having a mechanism in which a table on which a glass plate is mounted rotates by θ and moves in the XY direction relative to the cutter head. Mount on the cutter head.

Moreover, the glass cutting machine which concerns on this invention attaches the above-mentioned glass cutting machine wheel to a lower end part of the cylindrical handle used as a holding part so that rotation is free.

In addition, the method for cutting the closed curve region according to the present invention uses the above-described glass cutting machine wheel to scribe subsequent to the closed curve. Cut off.

Moreover, the scribe method which concerns on this invention sets and scribes this glass cutting machine wheel so that generation | occurrence | production of a horizontal crack will be less in the product side using the glass cutting machine wheel mentioned above.

EXAMPLE

FIG. 5 is a diagram showing a first embodiment of the present invention, in which portions corresponding to those of FIG. In this glass cutting machine wheel 25, as shown in the enlarged view A2, B2 of FIG. 5, the cut surface 23a of the groove 23 is inclined, and is uneven on both sides of the cut amount ridge line 22. As shown in FIG. The enlarged view A2 is the figure seen from the arrow Z direction. The groove widths W1 and W2 from both ridges 22 on both sides of the glass cutting machine wheel 25 as shown in FIG. 6 in the cross section of the line L2 recorded in the enlarged view B2 are the same. Therefore, the groove depths h1 and h2 at both ends of the grooves are also not equal to each other. Here, each dimension in this glass cutting machine wheel 25 is shown in Table 1 as a manufacturing example, and recommended operation data about the glass cutting machine wheel 25 produced in these production examples 1 and 2 are shown in Table 2, respectively. Indicated.

Production Example 1 (for thin plate) Production example 2 (for thick plate) Wound diameter (ø) Wound thickness (W) Quality of knife edge angle (2θ) Slot depth (h2) Slot depth (h1) Pitch (p) 2mm 0.6mm Super Hard Alloy 115 ° 5㎛ 20㎛110㎛ 4mm1.2mm Super Hard Alloy145 ° 5㎛40㎛180㎛

Machining Data 1 Machining Data 2 Glass Plate Thickness Knife Tip Load Striking Speed 1.1mm1.2Kg / cm2300mm / sec 3.0mm4.0Kg / cm2300mm / sec

The glass cutting machine wheel 25 is supported by a cutter head 46 to be freely rotated through a suitable shaft 25b as shown in FIG. 7, and 46a is a shaft 25b. It is a fixed cap. This cutter head 46 is mounted on a known automatic glass scriber described later.

When the wheel size ø of the glass cutting machine wheel 25 is extremely small, such as several mm, the size of the shaft 25b inserted into the wheel 25 is 1 mm or less, which makes it difficult to manage the shaft. Therefore, it is preferable to form the glass cutting machine wheel 25 integrally with the shaft 25b as shown in Fig. 8A, and according to the structure of the bearing portion of the cutter head 46, A pivot axis may be employed as shown at 25b 'in b). Alternatively, as shown in FIG. 8C, the glass cutting machine wheel 26 having the shape of the main plate egg may be used, and both ends 26 'correspond to the pivot axis 25b' described above.

Fig. 9 shows the crack shape of the surface of the glass plate when the glass plate 6 is scribed in accordance with the operation data corresponding to the glass cutting machine wheel 25 shown in Production Example 1 (even in Production Example 2). Indicated. The left figure means a side view, and the glass cutting machine 25 is set in the direction as shown. Therefore, the upper side of the line of the ridgeline in a figure becomes the product 6a, and the lower side of the line is the non-product 6b. The size of the display does not correspond to this drawing (right drawing) and the left drawing which are enlarged views by a microscope on it.

After scribing and dividing the glass plate 6 in this way, the state which bonded both pieces of glass which divided | segmented is shown in FIG. C1 represents the horizontal crack occurring in the product 6a, and C2 represents the span crack occurring in the non-product 6b.

Moreover, sectional drawing in the X-X line in FIG. 9 was shown in FIG. 11, and the vertical crack K1 was inclined to the left side in the figure toward downward. Table 3 shows the results when the glass cutting machine wheels 25 according to Production Example 1 and Production Example 2 were scribed according to the processing data described above.

Scribe results 1 Scribe result 2 Crack Depth (K1) Vertical Crack Slope Horizontal Crack (C1) Horizontal Crack (C2) 300 to 400 μm 15 ° 0 to 5 μm 5 to 10 μm 300 to 400 μm 20 ° 0 to 5 μm 5 to 10 μm

It is known that the inclination of the vertical crack K1 depends on the depth h1, h2 of the groove part, that is, the inclination of the groove 23 with respect to the axial center of the glass cutting machine wheel 25, and thus of (h1, h2) By subtracting the size, it is possible to obtain the vertical crack (K1) of the most suitable slope corresponding to the object to be processed.

12 to 14 are scribed using the glass cutting machine wheel 21 shown in FIG. 3, and correspond to FIGS. 9 to 11, respectively. As can be seen by comparing the transfer drawings, when scribed with the glass cutter wheel 21, the vertical crack K2 is in the vertical direction, and the horizontal cracks C1 and C2 in the product 6a and the non-product 6b. This is occurring evenly. On the other hand, when scribed with the glass cutting machine wheel 25 of the present invention, the vertical crack K1 is inclined downward toward the non-product 6b side, and the horizontal crack C2 largely occurs toward the non-product 6b side. The horizontal crack C1 generated on the product 6a side is considerably smaller. Therefore, this glass cutting machine wheel 25 is suitable for cutting the area | region enclosed by the closed curve.

Each dimension shown in Table 1 is only a simple example for thin plates and thick plates, the present invention

Wheel (ø): 1 to 20 mm

Wheel thickness (W): 0.6 to 5mm

Knife tip angle (2θ): 90 to 160 °

Groove depth (h2): 1 to 20 µm (depending on W and 2θ)

Groove depth h1: 2 to 2500 µm (depending on W and 2θ)

Pitch (p): 20 to 200 µm (depending on ø)

It is applicable to glass cutter wheels in the range of.

In the first embodiment, the shape of the groove when viewed from the side is U-shaped, but other embodiments employing other shapes are as follows. In each of those embodiments, only the enlarged view of the cutting edge is shown, as shown by A2 and B2 in FIG. 5.

In the second embodiment of FIG. 15, as shown in the enlarged view A3, the shape of the groove 31 viewed from the side is V-shaped, and the cut surface of the groove 31 is inclined in the same manner as in the above embodiment, and thus viewed from above. The shape of the groove 31 is as enlarged view B3.

In the third embodiment of FIG. 16, as shown in the enlarged view A4, the shape of the groove 32 viewed from the side is inclined in one direction like the saw blade, and the shape of the groove 32 viewed from above is as in the enlarged view B4. do.

In the third embodiment of FIG. 17, as shown in the enlarged view A5, the shape of the groove 33 viewed from the side is uniform in depth, and the shape of the groove 33 viewed from above is the same as the enlarged view B5.

FIG. 18 shows an example in which the grooves 23 of the glass cutting machine wheel 21 of FIG. 3 are formed by using a disk grinder 51, wherein the glass cutting machine wheel is inclined as shown in FIG. Grooves can be formed. Since the groove itself is extremely fine thereon, the groove may be formed using an electric discharge machine.

20 shows a circular scriber 35 suitable for cutting out a circular product 6a from the glass plate 6. The glass cutting machine 25 of the present invention is supported so as to be freely rotated by an arm 38 pivoting on a glass plate surface around a fixed shaft 37 fixed to the glass plate 6 by a sucker 36. The cutter head 46 is attached to the thumbscrew 39. By loosening the thumb screw 39, the cutter head 46 can be moved in the arm direction. The cutter head 46 can be scribed along the circle of the radius r by rotating the arm 38 in a state in which a scribe pressure is applied using a pressing means such as a spring (not illustrated). At this time, the glass cutting machine wheel 25 is set so that the vertical crack is directed toward the outside of the product (6a). Thereby, the generation amount of the horizontal crack at the product 6a side can also be suppressed.

Fig. 21 shows an automatic circular scriber 80 for automatically making the circular scribe. The horizontal member 83 which extends horizontally from the upper end of the support | pillar 82 standing up on the base 81 was provided, and the bearing part 84 of the up-down direction is provided in the other end. The rotary shaft 85 inserted into the bearing portion 84 is directly connected to the rotary shaft of the motor 46 at the upper end, and an arm 87 extending in the horizontal direction from the lower end of the rotary shaft 85 is installed. The cutter head 88 is provided so as to be able to slide freely with respect to the 87. In the lower part of the cutter head 88, the glass cutter 25 of this invention is provided so that rotation is free through the spring for pressure which is not illustrated in order to obtain a constant scribing pressure. The motor 86 itself is to be able to move up and down by the guide cylinder attached 89, and accordingly the cutter head 88 is to move up and down. The cutter head 88 is circularly moved on the glass plate 1 by the rotation of the motor 86.

22 and 23 show a front view and a side view of a general automatic glass scriber, and the table 41 on which the glass plate is placed is rotated θ in the horizontal direction by the rotation table 42 and the bowl screw 44 at the same time. The cutter head 46, which can move in the Y direction and freely rotates the glass cutting machine wheel 25 of the present invention at the lower end in the X direction (vertical direction with respect to the ground), follows the rail 47. I can move it.

When scribing, the table 41 can be moved in the Y direction and the? Direction, and at the same time, the cutter head 46 can be moved in the X direction to scribe along any straight line and curve. Therefore, in addition to the circular scribe, as shown in FIG. 24 (a), the cutter head 46 is scribed in succession in one closed line, thereby cutting out the arbitrary shape product 6a, or (b) and ( c) As shown in the figure, the peripheral edge may be cut out by scribes following a plurality of straight lines or curves to obtain a product 6a of a desired shape. In this case as well, the glass cutting machine 25 is set on the product 6a side so that the amount of horizontal cracks is reduced.

FIG. 25 shows that the glass cutting machine 25 of the present invention is provided at the “glass cutting machine” (laboratory 62-23780) by the present applicant. Reference numeral 61 is a cylindrical handle (handle) that is a grip portion, and a head 62 is installed at a lower portion thereof, and a glass cutting machine 25 of the present invention is fixed to the lower end of the head 62 so that rotation is free. . It also includes an oil tank 63 installed in the hollow portion of the handle, oil lid 64 of the oil tank, and the mechanisms 65 to 73 to supply oil to the glass cutter wheel 25. Since the description is not directly related to the present invention, the description is omitted.

For reference, microscope enlarged photographs (× 200) corresponding to FIGS. 9, 11, 12, and 14 are shown in FIGS. 26, 27, 28, and 29 as a reference.

As described above, the glass cutting machine wheel of the present invention is to form a slanted vertical crack by forming a groove on the knife ridge line at a constant pitch with a groove inclined at an angle with respect to the axial center direction of the wheel. When using a wheel to scribe a closed line such as a closed curve or rectangle, if you set the wheel so that the vertical crack always tilts out of the closed area, you can get a deep vertical crack and at the product side The generation | occurrence | production of a crack can be reduced significantly and productivity yield improves.

In addition, since the inclination of the vertical crack can be changed freely by changing the inclination angle of the groove, it is possible to obtain the vertical crack of the most suitable inclination corresponding to the processing object.

Claims (11)

A glass cutting machine wheel, characterized in that a groove is inclined at a predetermined angle with respect to the axial center direction of the wheel on a knife ridge line of a disk-shaped wheel at a constant pitch. The glass cutting machine wheel according to claim 1, wherein the groove has a pitch of 20 to 200 mu m according to a wheel size of 1 to 20 mm. 3. The groove depth (h1, h2) at both ends of the groove according to the wheel size of 1 to 2mm. h1: 1 ~ 2500㎛ h2: 1-20 탆 Glass cutting machine wheel, characterized in that. The glass cutting machine wheel according to any one of claims 1 to 3, wherein the shape of the groove when viewed from the side is a U shape, a V shape, a saw blade shape, or a concave shape. The glass cutting machine wheel according to any one of claims 1 to 4, wherein the glass cutting machine wheel is formed integrally with the shaft inserted into the glass cutting machine wheel. The cutter head is provided in a predetermined part of the arm where the circumference is freely installed on the glass plate, and the cutter head is formed on the knife head ridge of the disk-shaped wheel, and the groove is formed at a constant pitch with a groove inclined at a predetermined angle with respect to the axis center direction of the wheel. Circular scriber characterized in that the cutter wheel is mounted. The cutter head is provided in a predetermined part of the arm where the circumference is freely installed on the glass plate, and the cutter head is formed with a groove having a predetermined pitch in the cutter head ridge of the disc-shaped wheel inclined at a predetermined angle with respect to the axial center direction of the wheel. An automatic circular scriber comprising a cutter wheel and a motor for winding the arm. An automatic glass scriber having a mechanism in which a table on which a glass plate is mounted is rotated θ and moved relative to the cutter head in the XY direction, wherein the blade tip of the disk-shaped wheel has a predetermined angle with respect to the axial center direction of the wheel. An automatic glass scriber, comprising: a glass cutter wheel having an inclined groove formed at a constant pitch on the cutter head. In a glass cutting machine provided with a glass cutting machine wheel at the lower end of a cylindrical handle (handle) made of a grip part freely rotating, the glass cutting machine wheel has a predetermined angle with respect to the axial center direction of the wheel at the knife edge of the disk shape wheel. Glass cutter, characterized in that the groove formed at a constant pitch. In the case of scribing a closed curve using a glass cutter wheel which forms a vertical crack inclined at a predetermined pitch on the blade ridge of the disc-shaped wheel at a constant pitch with respect to the axial center direction of the wheel, the vertical crack is A method for cutting a closed curve region, comprising cutting out an area surrounded by a closed curve by setting the glass cutting machine wheel to always face the outside of the closed curve. On the side of the product by using the glass cutting machine wheel, in which the amount of horizontal crack is unevenly generated on both sides of the scribe brain by forming grooves inclined at an angle with respect to the axial center direction of the wheel at the blade ridge of the disk-shaped wheel. A scribing method comprising scribing and setting the glass cutting machine wheel so that the occurrence of horizontal cracks is reduced.