JP3236780B2 - Method and machine for grinding peripheral edge of glass plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for grinding a peripheral edge of a glass sheet and a numerically controlled grinding machine for a glass sheet for performing the method.

[0002]

In the case of chamfering the peripheral edge of a glass plate or making the peripheral edge of a glass plate a round edge, conventionally, a grinding wheel for chamfering is prepared and chamfering is performed. In addition, a round edge grinding wheel is prepared to perform round edge grinding.

[0003] When a part of a peripheral edge of one glass sheet is subjected to round edge polishing and a part of another peripheral edge is chamfered like a window glass of an automobile, for example, for example, First, the area determined by the grinding wheel for the round edge is ground and polished, and then the grinding wheel is replaced with a chamfering wheel and the remaining area is ground. However, such a method requires time for replacing the grinding wheel, and requires the grinding program to be executed twice, resulting in extremely poor workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and an object of the present invention is to eliminate the need to replace a grinding wheel and to form a peripheral edge of a glass sheet into a different shape.
It is an object of the present invention to provide a method for grinding a peripheral edge of a glass sheet, which can be formed on a glass sheet, and a numerically controlled grinding machine for a glass sheet for performing the method.

[0005]

SUMMARY OF THE INVENTION According to the invention, it is an object of the present invention to move a rotating grooved grinding wheel relative to a glass sheet in the plane of the glass sheet so that the groove of the grooved grinding wheel is moved. contacting the peripheral edge of the glass plate, the peripheral edge of the glass plate to a method of grinding by a groove of the grooved grinding wheel, grooved grinding wheel which <br/> pairs around edge of the glass plate said in one grinding by the grooves, and a peripheral edge of the groove and the glass plate of the grooved grinding wheel in contact with the first state, the grooved grinding wheel against <br/> around edge of the glass plate In another grinding process using the grooves, the grooved grinding wheel is moved relative to the glass sheet in a direction perpendicular to the surface of the glass sheet, and the grooves of the grooved grinding wheel and the peripheral edge of the glass sheet are moved. Different from the first state That is contacted in a second state, and one grinding
In addition to grinding the peripheral edge of the glass sheet to a different shape with another grinding process, during the grinding process,
The straight line connecting the center of rotation and the center of rotation of the
The grinding point for the peripheral edge of the glass
Turn the grooved grinding wheel so that it is
Te is achieved by a method for grinding a peripheral edge of the glass plate.

Further, according to the present invention, the object is to provide a table for supporting a glass plate, and a grooved grinding wheel for rotating a grooved grinding wheel for grinding a peripheral edge of the glass plate supported by the table by rotation. A rotary driving device coupled to the glass plate, a grinding wheel with grooves in a first direction along the surface of the glass plate and a second direction along the surface of the glass plate and in a second direction orthogonal to the first direction. A first moving device that moves relatively, a second moving device that relatively moves the grooved grinding wheel in a third direction orthogonal to the surface of the glass sheet with respect to the glass sheet, A numerical control device coupled to the first and second moving devices for numerically controlling the moving operation in the second moving device. Us It can be.

According to the method for grinding a peripheral edge of a glass sheet of the present invention, a groove is formed on the peripheral edge of the glass sheet .
In one grinding by the grooves of the grinding wheel can, a peripheral edge of the groove and the glass plate slotted Labs <br/> grinding wheel in contact with the first state, the grooved grinding the peripheral edge of the glass plate
In one other grinding by the grooves of the wheel, the glass plate
On the other hand, if the grooved grinding wheel is perpendicular to the surface of the glass
And a peripheral edge of the groove and the glass <br/> scan plate of the grooved grinding wheel is relatively moved in the direction in contact with the first state is different from a second state, one grinding and one other to grinding processed into different shapes peripheral edge of the glass <br/> scan plates in the grinding,
In one grinding, for example, round edge, the other one of the grinding pressure
In engineering, for example, can form a chamfered edge, therefore, without replacing the grooved grinding wheel to form a round edge and the chamfered edges around edge of the glass plate in the execution of one program obtained, working time Significant shortening can be achieved and the grinding operation can be greatly simplified. According to the numerical control grinding machine for a glass sheet of the present invention which implements the above method, in addition to the first moving device, the glass sheet has a groove in a third direction orthogonal to the surface of the glass sheet. A second moving device for relatively moving the grinding wheel is provided,
The second mobile device, because it is controlled numerically on the first mobile device and co, in the processing of the peripheral edge of the glass plate, relative to the grooved grinding wheel relative to the glass plate by the second mobile device By moving in the third direction to make even contact between the groove of the grooved grinding wheel and the peripheral edge of the glass sheet, a round edge can be applied to the peripheral edge of the glass sheet, while the second moving device When the grooved grinding wheel is moved relative to the glass plate in the third direction so that the groove of the grooved grinding wheel and the peripheral edge of the glass plate are in uneven contact with each other, the peripheral edge of the glass plate is chamfered. resulting performing the edge, therefore, without replacing the grooved grinding wheel, it can form a round edge and the chamfered edges around edge of the glass plate in the execution of one program, a significant reduction in work time With obtaining scale may greatly simplified the grinding operation.

Further, according to the numerically controlled grinding machine for a glass sheet of the present invention provided with a turning device for turning the grooved grinding wheel in the plane of the glass sheet, the grinding point can be arranged on the turning center line. In addition, the program can be simplified, and in addition, the peripheral edge of a glass plate including many curves such as a circular glass plate and an elliptical glass plate can be accurately ground.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention and embodiments of the present invention will be described in more detail with reference to the preferred embodiments shown in the drawings. The present invention is not limited to these embodiments.

[0010]

1 to 4, a pair of parallel rails 2 are attached to a base 1, and a slider 4 fixed to a table 3 is attached to the rail 2 by a glass plate 5. As shown in FIG.
The table 3 is provided with a suction device 6 for vacuum-suctioning the glass plate 5 and fixing the glass plate 5 slidably in the X direction which is the first direction along the surface. A nut 7 is attached to the lower surface of the table 3,
A screw rod 8 is screwed into the nut 7. The screw rod 8
Both ends are rotatably supported by bearings 9 and 10, and one end of the screw rod 8 is connected to a rotation output shaft of a servomotor 11 fixed to the base 1. When the screw rod 8 is rotated by the rotation of the rotation output shaft of the motor 11, the nut 7 screwed to the screw rod 8 is moved in the X direction. As a result, the table 3 and, consequently, the glass plate 5 are also moved in the X direction. You.

A pair of support frames 12 attached to the base 1
, A horizontal support frame 13 is bridged, and a pair of parallel rails 14 is attached to a side surface of the horizontal support frame 13. A slider 16 fixed to the moving table 15 is slidably fitted to the rail 14 along the surface of the glass plate 5 and slidably in the Y direction, which is a second direction orthogonal to the X direction. Has a nut 17 attached thereto, and a screw rod 18 is screwed to the nut 17.

A rotation output shaft of a servo motor 19 attached to the moving table 15 is connected to a pulley 21 via a bearing 20, and a belt 22 hung on the pulley 21 is
The rotation shaft 2 of the pulley 23
4 is rotatably supported by bearings 25 and 26 attached to the moving table 15. The gear 2 is attached to the rotating shaft 24.
The gear 27 is meshed with the gear 28, and the rotation shaft 29 of the gear 28 is rotatably supported by a bearing 30 mounted on the moving table 15.

A gripper 33 is provided at the upper end of a support 32 of the grinding head 31. The gripper 33 grips the lower end of a rotating shaft 29 and suspends and connects the grinding head 31 to the shaft 29. A slider 34 is slidably attached to the support 32 in the Z direction, which is a third direction orthogonal to the surface of the glass plate 5, and a motor 35 is attached to the slider 34. A grooved grinding wheel 38 having a concave groove 37 is attached to the rotary output shaft 36. The rotation of the rotation output shaft 36 of the motor 35 as a rotary driving device causes the grinding wheel 38 to rotate about the center line 67, whereby the grinding wheel 38 grinds the peripheral edge of the glass plate 5. The rotation of the rotation output shaft of the motor 19 causes the pulley 21, the belt 22, the pulley 2
3, rotating shaft 29, rotating shaft 29 via gears 27 and 28
Are rotated about the center line 65 of the rotating shaft 29, so that the support 32, and thus the motor 35 and the grinding wheel 38, are pivoted about the center line 65. Accordingly, the motor 19, the gears 27 and 28, the gripper 33 and the support 32 form a turning device for turning the grinding wheel 38 in the plane of the glass plate 5.

A bearing 39 and a servomotor 40 are mounted on the support 32.
A rotatable shaft 42 having a screw portion 41 screwed to the shaft is rotatably supported. A pulley 44 on which a belt 43 is hung is fixed to one end of the rotatable shaft 42. The belt 43 is
Pulley 4 attached to rotation output shaft 45 of motor 40
It is also multiplied by 6. The rotation of the rotation shaft 45 of the motor 40 rotates the rotation shaft 42 via the pulley 46, the belt 43 and the pulley 44, and as a result, the slider 34 screwed to the screw portion 41, and thus the motor 35 and the grinding wheel 38.
Is moved in the Z direction. Therefore, the motor 40, the pulley 4
4, 46, belt 43, rotating shaft 42 and slider 34
Forms a moving device that moves the grinding wheel 38 relatively to the glass plate 5 in a third direction perpendicular to the surface of the glass plate 5.

The support 32 is provided with fine adjustment mechanisms 47 and 48 for finely moving the motor 35 in the X and Y directions.

The screw rod 18 is rotatably supported at both ends by bearings 49 and 50. A pulley 51 is attached to one end of the screw rod 18, and a belt 52 hung on the pulley 51 is a servo motor. It is also hung on a pulley 54 attached to a rotation output shaft 53. Motor 5
As a result of the rotation of the rotary output shaft 3, the screw rod 18 is rotated via the pulley 54, the belt 52 and the pulley 51, and as a result, the nut 17 screwed to the screw rod 18 is moved in the Y direction. 15, the motor 35 and the grinding wheel 38 are moved in the Y direction.

Therefore, the motor 11, the screw rod 8, the nut 7
A first direction along the surface of the glass plate 5 with respect to the glass plate 5 by an X-direction moving device including the table 3 and the Y-direction moving device including the motor 53, the screw rod 18, the nut 17, and the moving table 15; And a grinding wheel 38 in a second direction along the surface of the glass plate 5 and orthogonal to the first direction.
Is relatively moved.

Motors 11, 19, 35, 40 and 53
Is connected to a numerical controller (not shown), which controls the rotation of the rotary output shaft.

The operation of the glass plate numerically controlled grinding machine 60 constructed as described above is explained by referring to FIG. (Taper edge) 62 to peripheral region 63
Next, the case where the round edge 64 is formed as shown in FIG. 7 will be described.

First, the numerical control program is executed by the center line 65.
Is formed so that the peripheral edge of the glass plate 5 to be ground is arranged on the extension of the above. Then, the glass plate 5 to be cut by the suction device 6 is fixed on the table 3. Here, the point at which the grinding wheel 38 and the glass plate 5 come into contact, that is, the grinding point (working point) 66 is arranged on the peripheral edge of the glass plate 5 to be ground, in other words, on the extension of the center line 65. The fine adjustment mechanisms 47 and 48 are operated. After that, by operating the numerical controller, the rotation of the rotation output shafts of the motors 11 and 53, which are numerically controlled,
As a result of the rotation of the screw rods 8 and 18, the table 3
With respect to the direction, the carriage 15 is moved with respect to the Y direction, whereby the center line 65, ie the grinding point 66, is moved along the peripheral edge of the glass sheet 5 to be ground sequentially and the grinding wheel 38 is rotated. As a result, the peripheral edge of the glass plate 5 is cut. Also, during grinding, the motor 19 is numerically controlled by the numerical controller, and as a result, the belt 2 is rotated by the rotation of the rotation output shaft of the motor 19 that is numerically controlled.
2. Rotating shaft 24, rotating shaft 29 via gears 27 and 28
Is rotated, so that the support 32 is moved to the center line 6 of the rotation shaft 29.
5 and the center line 6 of the grinding wheel 38
A straight line 68 connecting the turning center 7 with the turning center 65 is set to be a normal line at the grinding point 66 of the peripheral edge of the glass plate 5.

In grinding the peripheral area 61,
In order to displace the grinding wheel 38 toward the table 3,
The motor 40 is numerically controlled by a numerical controller. When the rotation output shaft 45 of the motor 40 is rotated by the numerical control,
Rotating shaft 4 via pulley 46, belt 43, and pulley 44
As a result, the motor 35 and the grinding wheel 38 are also moved in the Z direction. When the grinding wheel 38 is moved to the table 3 side, which is one direction in the Z direction, the peripheral edge of the glass plate 5 is strongly pressed against one of the light slopes of the concave groove 37 of the grinding wheel 38 and is ground. 6, a chamfered edge 62 as shown in FIG. On the other hand, when grinding the peripheral region 63 following the peripheral region 61, the motor 40 is controlled by the numerical controller so that the peripheral edge of the glass plate 5 is positioned in the concave groove 37 without any deviation. As a result, the glass plate 5 having the round edge 64 in the peripheral region 63 as shown in FIG. 7 can be obtained.

In the above embodiment, the positioning in the X direction to the grinding point 66 is performed by moving the table 3, but instead the table 3 is fixed and the support frame 13 is moved in the X direction. Alternatively, the table 3 itself may be moved in the X direction and the Y direction.

In addition, in the above embodiment, the positioning in the Z direction to the grinding point 66 is performed by moving the slider 34. Instead, the glass plate 5 such as the table 3 is moved in the Z direction. May be performed.

The rotation control of the rotation output shaft 36 of the motor 35 may be performed by a numerical controller, but the present invention is not limited to this, and the motor 35 may be always rotated at a constant rotation speed. .

[0025]

According to the present invention, it is possible to perform the peripheral edge processing of a plurality of kinds of shapes without replacing the grooved grinding wheel, glass La <br/> scan execution once the grinding program The peripheral edge of the plate can be machined in different shapes. Further, according to the present invention, in one of the grinding by the grooves of the grooved grinding wheel against the periphery edge of the glass plate is brought into contact with the peripheral edge of the groove and the glass plate of the grooved grinding wheel in the first state , in one other grinding by the grooves of the grooved grinding wheel against the periphery edge of the glass plate, the grooved grinding wheel is relatively moved in a direction perpendicular to the plane of the glass plate against the glass plate grooves The groove of the grinding wheel and the peripheral edge of the glass sheet are brought into contact with each other in a second state different from the first state, and the periphery of the glass sheet is subjected to one grinding and another grinding. In order to grind the edge into different shapes,
Work time can be greatly reduced, productivity can be greatly improved, and with a groove during grinding
A straight line connecting the center of rotation and the center of rotation of the grinding wheel is grooved
Grinding on the peripheral edge of a glass plate with a grinding wheel
Turn the grooved grinding wheel so that it is normal to the cutting point.
For turning, for example, chamfer to the peripheral edge of the glass plate
When forming an edge, keep the chamfer width constant
In addition, the machine for carrying out this can be provided with only one grooved grinding wheel, which is extremely simple in configuration, does not require a large installation space, and has a chamfer width.
However, there is an advantage that a certain glass plate can be formed .

[Brief description of the drawings]

FIG. 1 is a front view of a preferred embodiment of the present invention.

FIG. 2 is a side view of the embodiment shown in FIG.

FIG. 3 is a plan view of the embodiment shown in FIG. 1;

FIG. 4 is a partially enlarged view of the embodiment shown in FIG. 1;

FIG. 5 is a plan view showing an example of a glass plate to be cut.

FIG. 6 is a sectional view taken along line AA shown in FIG. 5;

FIG. 7 is a sectional view taken along the line BB shown in FIG. 5;

[Description of Signs] 3 Table 5 Glass plate 11, 19, 40, 53 Servo motor 15 Moving table 31 Grinding head 35 Motor 38 Grooving wheel with groove 34 Slider

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-16960 (JP, A) JP-A-62-113614 (JP, A) JP-A-63-84861 (JP, A) JP-A-62-1986 188661 (JP, A) Japanese Utility Model Hei 2-66943 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B24B 9/10

Claims (4)

(57) [Claims] 1. A grooved grinding wheel is moved relative to a glass plate in a plane of the glass plate so that a peripheral edge of the glass plate is brought into contact with a groove of the grooved grinding wheel. the peripheral edge of the glass plate by a groove of the grinding wheel to a method of grinding per, in one of <br/> grinding by the grooves of the grooved grinding wheel against the periphery <br/> edge of the glass plate, and a peripheral edge of the groove and the glass plate of the grooved grinding wheel in contact with the first state, the other by the grooves of the grooved grinding wheel against the periphery edge of the glass plate
In one grinding process, the grooved grinding wheel is moved relative to the glass sheet in a direction perpendicular to the surface of the glass sheet to cause the groove of the grooved grinding wheel and the peripheral edge of the glass sheet to be in the first position. state is brought into contact with a different second state, one
Peripheral edge of glass sheet with grinding and another grinding
While grinding into different shapes, and grooved during grinding.
The straight line connecting the rotation center and turning center of the grinding wheel
The peripheral edge of a glass plate with a grinding wheel
Use a grooved grinding wheel so that it is normal to the grinding point.
A method of grinding the peripheral edge of a glass plate by turning . Wherein a table for supporting the glass plate, and the grooved grinding wheel for grinding by rotating a peripheral edge of the glass plate supported by the table, the grooved grinding wheel to
A rotary drive device you want to rotate. Le, the glass plate, a second direction grooved grinding which is orthogonal to the first direction together along the plane of the first direction and the glass plate along the surface of the glass plate A first moving device that relatively moves the wheel, and a second moving device that relatively moves the grooved grinding wheel in a third direction perpendicular to the surface of the glass sheet with respect to the glass sheet,
Turning to rotate the grooved grinding wheel in the plane of the glass plate
Device, a movement operation in the first and second movement devices and
Comprising a numerical control device you are numerically controlled turning operation in the turning device, the numerically controlled grinding machine of the glass plates for carrying out the method according to claim 1. 3. The glass plate numerically controlled grinding machine according to claim 2, wherein the second moving device is connected to the grooved grinding wheel to move the grooved grinding wheel. 4. The grinding machine according to claim 2, wherein the second moving device is connected to a table for moving the glass sheet.