JPH09278473A - Method for scribing glass and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a perpendicular crack down to the inside of glass and to prevent the occurrence of a horizontal crack by periodically fluctuating the pressing force of a cutter to glass at the time of forming a scribing line on the glass by relatively moving the cutter while pressing the cutter to the glass surface. SOLUTION: The pressing force for pressing the cutter 12 to the glass 101 is periodically fluctuated in the method for scribing the glass which forms the scribing line by relatively moving the cutter 12 while pressing the cutter to the surface of the glass 101. A cutter having a convergent front end is preferably used as the cutter 12. The pressing force is preferably fluctuated at the period different from the intrinsic frequency of the glass. This scribing device M1 has a pressing mechanism 1 (consisting of a piezoactuator 18 as a vibration source, a vibration transmission member 15, an elastic arm 10, etc.) for pressing the cutter 12 to the glass 101 with the periodically fluctuating force. The pressing force fluctuations with the pressure P1 as a lower limit value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scribing method for forming a score line for breaking on a surface of glass and an apparatus suitable for carrying out the method.

[0002]

2. Description of the Related Art Generally, when breaking glass such as plate glass, a scribe line is formed on the surface of the glass and the scribe line is ruptured along the scribe line. It is performed as shown in FIG. That is, FIG. 9 shows a scribing method for forming the engraved line 105 on one plate glass 101 of the liquid crystal cell 100 formed by stacking two plate glasses 101 and 102. In this scribing method, a scatter ball shape is used. The pressing mechanism 110 is composed of a cutter 112 and a holder 111 that rotatably supports the cutter 112. When forming the score line 105, the cutter 112 is pressed against the plate glass 101 with a predetermined pressing force (for example, about 1 to 4 Kg / cm ² ), and the score line 105 is relatively moved in the arrow direction. Form.

FIG. 10 (A) is a cross-sectional view including a score line 105 of the glass sheet 101 scribed by the above method. The score line 105 is formed in order from the surface toward the deep part, and the blade advanced insertion part 105a, It is composed of rib marks 105b and vertical cracks 105c.

[0004]

The purpose of forming the reward score line 105 is to facilitate the breaking of the plate glass 101 by breaking the plate glass 101 along it, and for that purpose, the vertical crack 105c is formed deeply. There is a need to. In order to deepen the vertical crack 105c, the pressing force for pressing the cutter 112 against the plate glass 101 may be increased. However, the cutter 112 is attached to the plate glass 10
When a large pressing force is applied to No. 1, not only the vertical crack 105c but also a horizontal crack 106 extending in the left-right direction from the engraved line 105 is generated in the plate glass 101 as shown in FIG. There arises a problem that chipping or peeling occurs. Particularly in the case of the plate glass 101 of the liquid crystal cell 100, if the pressing force is increased, the transparent electrode (not shown) provided on the surface facing the plate glass 102 may be adversely affected by the pressing force of the cutter 112. Note that the horizontal crack 106 will not occur if the pressing force on the cutter 112 is reduced,
In that case, the depth of the vertical crack 105c becomes shallow. The plate glass 101 cannot be broken.

[0005]

In order to solve the above problems, the invention according to claim 1 is a glass scribing method for forming a score line by relatively moving a cutter while pressing it against the surface of the glass. The pressing force for pressing the cutter against the glass is periodically changed. In this case, it is desirable to use a cutter having a tapered tip as the cutter. Further, it is desirable to change the pressing force at a cycle different from the natural frequency of the glass. In order to solve the above-mentioned problem, the invention according to claim 4 is a glass scribing device for forming a score line by relatively moving a cutter while pressing the cutter against the surface of the glass, and the cutter is periodically arranged on the glass. It is characterized in that it is provided with a pressing mechanism for pressing with a fluctuating pressing force. In this case, it is desirable to use a cutter having a tapered tip as the cutter. As the pressing mechanism, the cutter is attached to one end of the cutter, and the cutter is elastically deformed in the pressing direction to bring the cutter into contact with the glass, and the other end of the elastic member is pressed in the pressing direction. It is preferable to use a device having a vibration source that periodically changes the pressing force of the cutter against the glass by vibrating the glass. When such a pressing mechanism is adopted, the elastic member is such that the longitudinal direction thereof is oriented in a direction substantially orthogonal to the pressing direction, and one end portion where the cutter is attached approaches and separates from the glass. And an elastic arm swingably arranged around the middle part is used, and the vibration source is connected to the other end of the elastic arm so as to vibrate the other end toward and away from the glass. It is desirable to do. Further, as the elastic member, the longitudinal direction is oriented in a direction substantially orthogonal to the pressing direction, and the other end opposite to the one end to which the cutter is attached is fixedly arranged, and the cutter is attached to the glass. An elastic arm is used which is elastically deformable with one end as the fulcrum so that it approaches and separates, and the vibration source vibrates in the middle of the elastic arm, and the middle part approaches and separates from the glass. It is desirable to connect so that

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a side view showing a scribing apparatus M1 which is a first embodiment of the present invention. The scribing device M1 includes a pressing mechanism 1 and a mounting table 3
It has 0 and. The mounting table 30 is a scribing device M1.
Is attached to the main body of the device (not shown) so that the position can be adjusted in the front-back and left-right directions, and the liquid crystal cell 100 to be scribed is positioned and detachably attached to the upper surface 30a thereof (not shown). Are formed. The liquid crystal cell 100 includes two glass plates 101 and 102.
The upper surface of the plate glass 101 on the upper side (the surface opposite to the bonding surface) 101a.
A score line is formed across this.

A so-called diamond cutter is used as the cutter 12 for forming the score line on the plate glass 101. As is well known, the diamond cutter 12 has a quadrangular pyramid or cone shape that tapers downward,
A cutting edge tip (not shown) made of diamond grains is fixed to the tip portion. The cutting edge has a quadrangular pyramid-shaped vertex facing downward.

The cutter 12 is attached to the lower surface of the head 11, and the head 11 is detachably fixed to the tip of the elastic arm 10. The head 11 may be fixed to the elastic arm 11 and the cutter 12 may be detachably attached to the head 11. Elastic arm 11
Is arranged with its longitudinal direction oriented horizontally,
The head 11 is elastically deformable so that the head 11 can be displaced in the vertical direction shown by the arrow C. The elastic arm 11 is used for the body frame 2 of the pressing mechanism 1 as follows.
Supported by.

That is, the main body frame 2 is substantially U-shaped, and has a pair of side plate portions 3 and 3 facing each other in the left-right direction.
And a bottom plate portion 4 connecting the lower portions thereof, and the pair of side plate portions 3 and 3 and the bottom plate portion 4 form a recess 6 having an open upper portion. This body frame 2
Has a bolt (not shown) inserted through a mounting hole 5 provided in the upper portion of the side plate portions 3, 3 and is fixed to the device body of the scribe device M1 by this bolt.

At both ends of the lower end surface of the main body frame 2, protrusions 7, 7 having a chevron cross section are formed. Support shafts 8, 8 for supporting the elastic arm 10 are provided at the lower ends of the protrusions 7, 7. These two support shafts 8, 8
Is arranged with its longitudinal direction oriented in a horizontal direction orthogonal to the longitudinal direction of the elastic arm 10, and engages with the elastic arm 10 at two locations, namely, the intermediate portion and the proximal end side, from above. The support shaft 8 and the elastic arm 10 are engaged with each other so as to prevent the elastic arm 10 from being displaced in the longitudinal direction and to allow the elastic arm 10 to swing vertically about the support shaft 8. ing.

In the recess 6 of the main body frame 2, an inverted U-shaped vibration transmitting member 15 is arranged so as to straddle the bottom plate portion 4. The vibration transmitting member 15 includes an upper plate portion 16 that faces the upper surface of the bottom plate portion 4 of the main body frame 2, and two side plate portions 17 and 17 that extend laterally to the lower side of the bottom plate portion 4. There is. A piezo actuator 18 as a vibration source is sandwiched between the bottom plate portion 4 of the main body frame 2 and the upper plate portion 16 of the vibration transmitting member 15. As is well known, the piezo actuator 18 expands and contracts in the vertical direction according to the input of an AC voltage, and the expansion and contraction of the piezoelectric actuator 18 vibrates the vibration transmission member 15.

A vibrating shaft 19 is arranged and fixed between the lower end portions of the side plate portions 17, 17 of the vibration transmitting member 15 so as to be parallel to the support shaft 8 and pass under the bottom plate portion 4. The vibrating shaft 19 is located in the middle of the two support shafts 8, 8 that support the elastic arm 10, and always abuts the lower surface of the elastic arm 10 so that the upper surface of the elastic arm 10 is supported by the support shafts 8, 8. Pressing against. Therefore, when the vibration transmitting member 15 vibrates, the portion of the elastic arm 10 between the support shafts 8 and 8 elastically deforms so as to swing up and down with the support shafts 8 and 8 as fulcrums,
As a result, the tip of the elastic arm 10 swings up and down about the right support shaft 8 in FIG. As a result, the cutter 12 vibrates in the vertical direction as shown by the arrow C. However, the cutter 12 vibrates only in a free state where it is not pressed against the plate glass 101, and when it is pressed against the plate glass 101, the plate glass 101
Vibration is almost stopped by. As a result, the kinetic energy of vibration is converted into a pressing force for pressing the cutter 12 against the plate glass 101, and the cutter 12 is pressed against the plate glass 101 with a cyclically changing pressing force. In this case, the pressing force fluctuates with the applied pressure P1 as the lower limit value, as shown in FIG.

In addition to the above-described structure, the scribing device M1 also includes a horizontal moving mechanism (not shown) for relatively feeding and moving the mounting table 30 and the pressing mechanism 1 in the longitudinal direction of the elastic arm 10. I have it. In this embodiment, the mounting table 30 is moved. Further, it is provided with a vertical movement mechanism (not shown) capable of moving the pressing mechanism 1 in the vertical direction and fixing it at a desired position.

Next, description will be made on a case where the scribing apparatus M1 having the above-mentioned structure is used to form a score line on the surface 101a of the plate glass 101. First, as a preparatory step, the liquid crystal cell 100 to be scribed is placed on the mounting table 30, and the mounting table 30 is placed so that the cutter 12 is located above the engraved line forming position.
Adjust the position of. Next, the pressing mechanism 1 is moved downward by the vertical movement mechanism to press the cutter 12 against the plate glass 101. And the cutter 1 for the plate glass 101
When the pressing force of 2 reaches a predetermined pressurizing force P1 (see FIG. 2), the pressing force is stopped, and the position of the cutter 12 (the position of the pressing mechanism 1) at that time is set as the operating position. The pressure P1 is determined by the material and thickness of the plate glass 101 to be cut, the depth of the score line to be formed,
It is determined based on an experiment depending on the type of the cutter 12, etc., but is set to, for example, 0.1 to 0.5 Kg / cm ² . After the completion of the preparation process, the pressing mechanism 1 is moved upward and returned to the predetermined standby position.

Next, in the case of actually forming a score line on the surface 101a of the plate glass 101, the liquid crystal cell 100 is first mounted on the mounting table 30. At this time, the mounting table 30 is placed at an initial position such that the cutter 12 is separated from the plate glass 101 in the arrow A direction. Next, the pressing mechanism 1 is moved downward to the operating position and fixed in position. Further, a high-frequency voltage is applied to the piezo actuator 18 so that the piezo actuator 18 expands and contracts, and the cutter 12 vibrates and reciprocates vertically. Then, while maintaining this state, the mounting table 30 is moved in the arrow A direction. When the mounting table 30 is moved to a predetermined position, the cutter 12 moves the upper surface 101a of the plate glass 101.
And is pressed against it, and begins to form a score line on the upper surface 101a. Then, by moving the cutter 12 until it crosses the plate glass 101, it is possible to form a score line that crosses the plate glass 101 on the surface 101a. After forming the score line, piezo actuator 1
The energization of 8 is stopped and the pressing mechanism 1 is moved upward to the standby position. Then, the liquid crystal cell 100 is removed from the mounting table 30. After that, the mounting table 30 is returned to the initial position, and a marking line is formed on the plate glass 101 of the next liquid crystal cell 100 in the same manner as described above.

When a scribe line extending from a predetermined location on the upper surface 101a to another predetermined location is formed on the plate glass 101 instead of the scribe line traversing the flat glass 101, a high frequency voltage is applied to the piezo actuator 18. In this state, the cutter 12 may be pressed against a predetermined location on the upper surface 101a and moved to another predetermined location while maintaining that state.

In the scribing apparatus M1 of the present invention, when the cutter 12 is pressed against the upper surface of the plate glass 101 while the high frequency voltage is applied to the piezo actuator 18, the pressing force P1 which fluctuates with the pressurization P1 being the lower limit value is applied to the cutter 12. Works. When the pressing force P increases, the cutter 12
It is possible that the vertical cracks (see FIG. 10) are formed deep inside the plate glass 101 even if the pressing force P is set to be relatively small, probably because the plate is impacted against the plate glass 101. Since the pressing force P can be reduced, the occurrence of horizontal cracks can be almost eliminated.

Further, in the scribing apparatus M1, the piezo actuator 18 and the cutter 12 which are vibration sources.
Since the elastic arm 10 is interposed between and,
1 and the pressing force P can be easily set to a predetermined magnitude. That is, the cutter 12 and the holder 11 are
Although it may be directly fixed to the lower end portion of the vibration transmission member 15, in such a case, when the cutter 12 is pushed down after the cutter 12 comes into contact with the plate glass 101, the support system of the cutter 12 is a rigid body. The pressing force increases rapidly. Therefore, it becomes difficult to set the pressure P1. This point is because the pressing force P1 that fluctuates due to the vibration of the piezo actuator 18
The same applies to. However, when the elastic arm 10 as an elastic member is interposed between the cutter 12 and the vibration transmitting member 15 like the scribing device M1, the cutter 12 comes into contact with the glass sheet 101 due to the elastic deformation of the elastic arm 10. It is possible to reduce the rate of fluctuation of the pressing force with respect to the amount of pressing when the pressure is further pressed. Therefore, the applied pressure P1 and the pressing force P can be easily set to desired magnitudes. In particular, when the horizontal elastic arm 10 is used as in this embodiment, the position of the elastic arm 10 in the horizontal direction is adjusted as appropriate so that the right supporting shaft 8 to the cutter 12 in FIG. The distance in the horizontal direction can be changed, whereby the pressurizing force P1 and the pressing force can be finely adjusted.

The cycle of the pressing force P, in other words, the frequency of the high frequency voltage applied to the piezo actuator 18 is
It is preferable to set the frequency different from the natural frequency of the plate glass 101. By doing so, the plate glass 101 can be prevented from resonating with the cutter 12, and the plate glass 10 can be prevented.
Contact with the cutter 12 due to the vibration of 1 (near the engraved line)
This is because it is possible to prevent a minute chip from occurring in the. Normally, the frequency of the high frequency voltage applied to the piezo actuator 18 is set to about 10 to 30 KHz,
The amount of expansion / contraction of the piezo actuator 18, that is, the amplitude is several μ
It is set to about m to 20 μm. Further, the feed rate of the cutter 12 is 100 to 250 m when the above frequency is adopted.
It is better to set it to about / min.

Next, with reference to FIGS. 2 and 3, a scribing apparatus M2 according to a second embodiment of the present invention will be described. The scribing device M2 includes a liquid crystal cell (glass) mounting base 30 and two pressing mechanisms 1A and 1B respectively arranged above and below the mounting base 30. Vertical pressing mechanism 1
Although not shown in the drawings, A and 1B are all attached to the apparatus main body, and are movable in the vertical direction with respect to the mounting table 30. The upper pressing mechanism 1A is
Since it is the same as the first embodiment in FIG. 1, its description is omitted. On the other hand, the lower pressing mechanism 1B is installed in the opposite direction.

That is, the mounting table 30 is provided with a groove 33 penetrating the mounting table 30 along the direction in which the marking line is formed.
The cutter 12 of the lower pressing mechanism 1B is disposed in the groove 33 from the lower side with its tip end facing upward, and is movable along the groove 33. The liquid crystal cell 1 mounted on the mounting table 30 is mounted on the table surface 30 a of the mounting table 30.
A large number of vacuum suction holes 31 for adsorbing and holding 00 are formed. These vacuum suction holes 31 are connected to a vacuum source (not shown) via a vacuum suction pipe 32 in which a valve (not shown) is arranged.

In this scribing apparatus M2, the mounting table 30
Since the pressing mechanisms 1A and 1B are arranged above and below, respectively, the two laminated plate glasses 10 constituting the liquid crystal cell 100 are arranged.
It is possible to engrave a marking line on each of the surfaces 1 and 102 at the same time. At this time, if the upper and lower cutters 12 and 12 are pressed at substantially the same positions of the both glass plates 101 and 102, the bending force due to the pressing can be offset, so that the influence of the bending force on the liquid crystal cell 100 can be reduced. You can In addition, since the lower surface of the liquid crystal cell 100 can be engraved, it is possible to shift to the cutting step with the posture of the liquid crystal cell 100 mounted on the mounting table 30. Further, since the mounting table 30 is provided with the vacuum suction holes 31, the liquid crystal cell 100 can be stably held, and the work becomes easy.

As shown in FIG. 3, the upper pressing mechanism 1A may be omitted and only the lower pressing mechanism 1B may be provided.

FIG. 4 shows a third embodiment of the scribing apparatus of the present invention. In this scribing apparatus M3, the upper end portion of the piezo actuator 18 which expands and contracts in the vertical direction is supported by the main body frame 2. Has been done. The vibration transmission member 15 is supported on the lower end of the piezo actuator 18. Further, a base end portion of an elastic arm 10 extending in a substantially horizontal direction is detachably fixed to the main body frame 2, and a lower end portion of the vibration transmitting member 15 is abutted on an upper surface of an intermediate portion of the elastic arm 10. There is. Therefore, when a high frequency current is applied to the piezo actuator 18 with the cutter 12 abutting against the plate glass 101, the cutter 12 is pressed against the plate glass 101 with a pressing force P that fluctuates at the same frequency as the high frequency current.

Next, with reference to FIGS. 5 to 8, a method of breaking the plate glass on which the score line is formed as described above will be described. In addition, here, the liquid crystal cell 10
It is assumed that a broken line is formed on the plate glass 102 of 0 to break.

The breaking device B1 in this case, as shown in FIG. 5, comprises a mounting table 50 and a vacuum suction device 70. As shown in FIGS. 5 to 8, the table 50a of the mounting table 50 has a recess 5 slightly recessed from the level of the table 50a.
1 is formed. The width of the recess 51 is determined by the engraved line 1 of the plate glass 102 when the liquid crystal cell 100 is placed on the table surface 50a.
The size is set so as to include the predetermined range (the range necessary for breaking) on both sides of 05. The depth of the recess 51 is dimensioned so that even if the plate glass 102 bends downward when the plate glass 102 is broken, the plate glass 102 does not interfere. The length of the concave portion 51 is set according to the length of the score line 105, but here, it is set to be slightly shorter than the total length of the score line 105.

A groove 53 extending over substantially the entire length of the recess 51 is formed in the center of the recess 51 in the width direction, and a vacuum suction hole 54, which is a screw hole, is formed at an appropriate position of the groove 53. A suction pipe 55 of a vacuum suction device 70 is screw-connected to the lower end opening of the vacuum suction hole 54. At the base end side of the suction pipe 55, there are an atmosphere open pipe 58 opened to the atmosphere via a first electromagnetic valve V1 and a suction source pipe 56 leading to a vacuum tank 57 via a second electromagnetic valve V2. It is connected. The vacuum tank 57 is connected to a vacuum pump (not shown) and is constantly maintained at a high degree of vacuum. A mounting groove 52 is annularly formed on the base surface 50a so as to surround the concave portion 51, and an O-ring 60 is accommodated in the mounting surface 52a with a part thereof protruding. Therefore, when the liquid crystal cell 100 is placed on the table surface 50a, the recess 5
1 is hermetically sealed by the plate glass 102 and the O-ring 60.

A liquid crystal cell 100 is manufactured by using this breaking device B1.
In the case of breaking the plate glass 102, as shown in FIG. 5, the liquid crystal cell 100 is placed so as to be in close contact with the table surface 50a of the mounting table 50, and the engraved line 105 on the lower surface is positioned above the groove 53 at the center of the recess 51. To do. Next, the first electromagnetic valve V
The plate glass 1 in which the engraved line 105 is formed by alternately opening and closing the first and second electromagnetic valves V2 in a short cycle.
A shocking suction force is repeatedly applied to the lower surface of 02. As a result, the bending force is repeatedly applied only to the plate glass 102 on the lower side, and the plate glass 10 along the score line 105.
2 breaks. In this method, the bending force acts only on the plate glass 102 on the lower side in which the score line 105 is inserted, so that there is no fear of adversely affecting the internal circuit or the like of the liquid crystal cell 100.
Of course, the breaking method is not limited to the above example.

The present invention is not limited to the above-described embodiment, and the design can be changed as appropriate. For example,
In the above-described embodiment, the conical or pyramidal cutter 12 is used, but an abacus-shaped cutter as shown in FIGS. 9 and 10 may be used. However, when the tapered cone-shaped cutter 12 is used, the pressing force acts at one point, so that the vertical crack can be formed deeper.

[0030]

As described above, according to the invention of claim 1 or 4, vertical cracks can be formed deep inside the glass, and horizontal cracks can be prevented from occurring. The effect of being able to be obtained is obtained.
According to the invention of claim 2 or 5, it is possible to obtain an effect that the vertical crack can be made deeper and the occurrence of the horizontal crack can be prevented more reliably. According to the invention according to claim 3,
Since it is possible to prevent the glass from resonating with the cutter, it is possible to obtain an effect that it is possible to prevent a chip from being generated in a portion near the score line of the glass. According to the invention of claim 6, it is possible to obtain an effect that the pressurizing force and the pressing force applied to the cutter can be easily set to a predetermined magnitude. According to the invention of claim 7, it is possible to finely adjust the pressurizing force and the pressing force applied to the cutter. According to the invention of claim 8, the same effect as that of the invention of claim 6 can be obtained.

[Brief description of drawings]

FIG. 1 is a view showing a first embodiment of the present invention, FIG. 1 (A) is a side view of a scribing device, and FIG.
FIG. 6 is a diagram showing a change in pressing force of the cutter against glass in the scribing device.

FIG. 2 is a diagram showing a main part of a scribing device according to a second embodiment of the present invention in a cross section orthogonal to a marking line.

FIG. 3 is a perspective view showing a configuration of a lower side portion of the scribing device shown in FIG.

FIG. 4 is a diagram showing a main part of a scribing device according to a third embodiment of the present invention in a cross section orthogonal to the engraving line.

FIG. 5 is a partially omitted cross-sectional view of a breaking device used in a cutting process after forming a score line by the scribing device according to the first embodiment.

FIG. 6 is a partially omitted plan view of the breaking device.

FIG. 7 is a sectional view taken along the line XX of FIG.

8 is a cross-sectional view taken along the line YY of FIG.

FIG. 9 is a perspective view showing a conventional scribing method.

10A and 10B are explanatory views for clarifying a problem of the conventional scribing method, FIG. 10A is a side sectional view, and FIG. 10B is a front view.

[Explanation of symbols]

 M1 scribing device M2 scribing device M3 scribing device 1 pressing mechanism 1A pressing mechanism 1B pressing mechanism 10 elastic arm 12 cutter 18 piezo actuator (vibration source) 30 mounting table 101 plate glass (glass) 102 plate glass (glass) 105 engraving line

Claims (8)

[Claims] 1. A glass scribing method for forming a score line by relatively moving a cutter against the surface of glass to form a score line, wherein the pressing force for pressing the cutter against the glass is periodically changed. How to scribe. 2. The glass scribing method according to claim 1, wherein a cutter having a tapered tip is used as the cutter. 3. The glass scribing method according to claim 1, wherein the pressing force is varied in a cycle different from the natural frequency of the glass. 4. A glass scribing device for forming score lines by relatively moving a cutter against the surface of the glass while providing a pressing mechanism for pressing the cutter against the glass with a cyclically varying pressing force. A glass scribing device. 5. The glass scribing device according to claim 4, wherein a cutter having a tapered tip is used as the cutter. 6. The pressing mechanism, wherein the cutter is attached to one end of the pressing mechanism, and an elastic member for pressing and contacting the glass with the cutter elastically deformed in the pressing direction, and the other end of the elastic member. The glass scribing device according to claim 4 or 5, further comprising: a vibration source that periodically fluctuates the pressing force of the cutter against the glass by vibrating in the pressing direction. 7. The elastic member is oscillated about an intermediate portion so that its longitudinal direction is oriented in a direction substantially orthogonal to the pressing direction and one end portion to which the cutter is attached approaches and separates from the glass. An elastic arm that can be disposed is used, and the vibration source is connected to the other end of the elastic arm so as to vibrate the other end toward and away from the glass. 7. A glass scribing device according to claim 6, characterized in that 8. As the elastic member, the longitudinal direction of the elastic member is oriented substantially orthogonal to the pressing direction, and the other end portion opposite to the one end portion to which the cutter is attached is fixedly arranged. An elastic arm whose one end is elastically deformable with the other end as a fulcrum is used so as to approach and separate from the glass, and the vibration source is located at an intermediate part of the elastic arm and the intermediate part approaches the glass. 7. The glass scribing device according to claim 6, wherein the glass scribing device is connected so as to vibrate in a direction in which the glass is separated.