JP2001261357A - Glass sheet processing method and apparatus - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent a glass plate from being damaged, reduce the space occupied by a device, and efficiently produce a high-precision glass product in a short time. A glass sheet processing apparatus (10) according to the present invention includes a cutting / folding machine (14) disposed on one side of a glass sheet (G) suction conveyance device (12), and a chamfering machine (16) disposed on the other side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass for cutting a glass sheet, cutting the glass sheet along the cutting line, and chamfering a peripheral edge of the glass sheet in order to cut out various glass products for automobiles from the glass sheet. The present invention relates to a method and an apparatus for processing a plate.

[0002]

2. Description of the Related Art When cutting various glass products for automobiles from a glass plate, first fix the glass plate on a table of a cutting machine, and then move the cutter to move the glass plate along the shape of the glass product. Make a cut line. Next, the glass plate is removed from the table of the cutter, and the glass plate is fixed to the table of the folder, and the glass plate is broken along the cutting line by pressing the glass plate with the press head of the folder. Then, the glass plate is removed from the table of the folding machine, this glass plate is fixed to the table of the chamfering machine, and the periphery of the glass plate is pressed against the grindstone of the chamfering machine to be chamfered. Thereby, the glass plate is processed into a glass product having a desired shape.

[0003]

However, in the conventional glass sheet processing apparatus, the glass sheet is removed from the table of the processing machine every time the glass sheet is cut, cut, and chamfered. Since the glass sheet must be manually conveyed and fixed to the table of the next processing machine, there is a disadvantage that the glass sheet may be damaged when the glass sheet is conveyed between the processing machines. Further, in the conventional apparatus, since each processing machine has a table, there is a disadvantage that the space occupied by the entire apparatus is enormous. Furthermore, there is also a disadvantage that productivity is reduced because the number of times the glass sheet is transported between the processing machines is large.

Further, in the conventional apparatus, the glass plate is fixed on the table of the chamfering machine while the posture fixed on the table of the folding machine, that is, the fixing posture of the glass plate is accurately reproduced on the table of the chamfering machine. It is difficult. For this reason, in the conventional apparatus, a margin for chamfering is set to be large in consideration of a positional shift when the glass plate is fixed to the table of the chamfering machine. As a result, the conventional apparatus has a drawback that the processing time in the chamfering machine becomes longer and the life of the grindstone becomes shorter.

[0005] Further, in the folding machine, the glass plate is split using an underlay plate called a folding plate corresponding to the shape of the glass product, so that the glass product is changed in the conventional folding machine. The folding plate must be changed each time, so that there is a disadvantage that it takes time to change the job.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and can prevent a glass plate from being damaged, reduce the space occupied by a device, and efficiently produce a high-precision glass product in a short time. It is an object of the present invention to provide a method and an apparatus for processing a glass sheet which can be performed.

[0007]

According to the present invention, in order to achieve the above object, a glass plate is held by suction on a suction table.
The suction table is transported to a cutting machine, and a cutting line having a desired shape is formed on a glass plate by a cutter of the cutting machine.After the cutting line processing is completed, the suction table is held in a state where the glass plate is suction-held by the suction table. The glass plate is conveyed to a folding machine, the glass plate is folded along the cutting line by the folding means of the folding machine, and after the folding process is completed, the suction table is chamfered while the glass plate is suction-held by the suction table. The edge of the glass plate is chamfered with a grinding wheel of the chamfering machine.

Further, in order to achieve the above object, the present invention comprises a cutting machine provided with a cutter for processing a desired shape of a cutting line on a glass plate, and a folding means for breaking the glass plate along the cutting line. Folding machine, a chamfering machine provided with a grindstone for chamfering the periphery of the glass plate, a suction table for sucking and holding the glass plate, and moving the suction table to the cutting machine, folding machine, and chamfering machine, and The suction table driving means for rotating the suction table about an axis orthogonal to the suction surface of the table, and the operation of the suction table driving means are controlled so that a cutting line having a desired shape is formed on the glass plate in the cutter. Controlling the operation of the suction table driving means so that the glass sheet is split along the cutting line in the folding machine, and the peripheral edge of the glass sheet is chamfered in the chamfering machine. As such, it characterized by comprising a control means for controlling the operation of the suction table drive means.

According to the first and second aspects of the present invention, first, the glass plate is suction-held by the suction table, and the driving means of the suction table is controlled by the control means to transfer the glass plate to the cutting machine. A cutting line having a desired shape is formed on a glass plate by a cutter of a cutting machine. Next, in a state where the glass plate is sucked and held by the suction table, the driving unit is controlled by the control unit to convey the glass plate to a folding machine, and the folding unit of the folding machine folds the glass plate along a cutting line. Split processing. Next, the glass plate is conveyed to the chamfering machine by controlling the driving means by the control means while the glass plate is suctioned and held by the suction table, and the peripheral edge of the glass plate is chamfered by the grindstone of the chamfering machine.

As described above, according to the present invention, a glass plate is transferred by a single suction table without manually transferring the glass plate between the processing machines or automatically transferring the glass plate by a suction hand. Since the glass sheet is transported between the processing machines while being sucked, it is possible to prevent the glass sheet from being damaged when the glass sheet is transported between the processing machines. In addition, since the displacement of the glass plate on the suction table does not occur during the process of processing the glass plate, the margin for chamfering can be set smaller. Therefore, the processing time in the chamfering machine can be shortened, so that an accurate glass product can be manufactured in a short time. Further, since the table of each processing machine is shared by one suction table, the space occupied by the apparatus can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a method and an apparatus for processing a glass sheet according to the present invention will be described below with reference to the accompanying drawings.

In a glass sheet processing apparatus 10 shown in FIG. 1, a glass sheet G cutting and folding machine 14 is disposed on the upper left side of FIG. In addition, a chamfering machine 16 for a glass plate G is disposed to face the cutting and folding machine 14.

The suction transfer device 12 includes a suction table 18,
An X─θ table 20 and a table moving device (table driving means) 26 including a rail 22 and a driving unit 24. The suction table 18 is a table that holds the glass plate G to be processed by suction, and an X─θ table 20 is fixed below the suction table 18. The X─θ table 20 is moved by the table moving device 26 in the X direction,
4 and the chamfering machine 16, and rotates in the θ direction about a turning axis (an axis perpendicular to the suction surface of the suction table: not shown) provided in the drive unit 24 of the table moving device 26. It is movably supported. On the upper surface of the suction table 18, a large number of pads 28, 28... Are arranged in a lattice, and these pads 28, 28.
Is connected to a suction pump (not shown) through a vacuum passage disposed inside the suction pump. Thereby, the glass plate G
When the suction pump is operated while the glass plate G is placed on the suction table 18, the glass plate G
Is adsorbed to ... Thus, the glass plate G is suction-held on the suction table 18.

The table moving device 26 has a rotary motor and a linear motor (not shown) that are servo-controlled. When the rotation motor operates, the turning shaft is driven, whereby the X-θ table 20 rotates in the θ direction. When the linear motor operates, the X-θ table 20
Moves on the rail 22 in the X direction. When the linear motion motor is operated to move the X-θ table 20 in the X direction, the glass plate G sucked and held on the suction table 18 becomes
It is conveyed between the cutting and folding machine 14 and the chamfering machine 16. Further, when the rotation motor and the linear motor are simultaneously controlled, the glass plate G can be moved along the locus of the cutting line with respect to the cutting machine 34 of the cutting and folding machine 14. Further, the glass plate G can be moved along the locus of the periphery with respect to the chamfering grindstone of the chamfering machine 16. The table moving device 2
The rotary motor and the linear motor 6 are controlled by a CPU (control means) 30 shown in FIG. The CPU 30 reads the shape information of the glass plate G transmitted from the external input device 32 such as a keyboard, or an external recording medium such as a floppy (registered trademark) disk in which the shape information of the glass plate G is stored in advance. Based on the shape information, the table moving device 26, the cutting machine 34 and the folding machine 36 of the cutting / folding machine 14, and the chamfering machine 16 are respectively controlled.

As shown in FIG. 1, the cutting and folding machine 14 includes a main body 38 which is disposed so as to
It comprises one cutting machine 34 and two folding machines 36, 36 provided in the eight beam sections 40.

The beam portion 40 of the main body 38 is disposed in a direction perpendicular to the rail 22,
Guide rails 42, 42 provided in parallel with the rail 22 above the upper parts 9, 39 are slidably supported.
A servo motor 44 is provided at the end 41 of the beam section 40.
A pinion is fixed to a drive shaft (not shown) of the servo motor 44, and the pinion is engaged with a rack (not shown). The rack is disposed on the column 39 in parallel with the guide rail 42. Therefore, when the servomotor 44 is operated, the beam portion 40 is reciprocated in the direction in which the rails 22 are disposed (X direction) by the feed action between the pinion and the rack.
The positions of the cutter 34 and the folder 36 in the X direction are adjusted. Reference numeral 46 denotes a cullet hopper installed below the beam unit 40.
The glass pieces split by the folder 36 are collected.

As shown in FIG. 3, the cutter 34 comprises a cutter unit 47, a support roller 48, and the like.
Is fixed to a moving block 51 formed in a substantially inverted U-shape so as to face the other side. The moving block 51 is attached to the moving frame 50 so as to be movable in the X direction.

The upper bracket 50A of the moving frame 50 includes
The servo motor 52 is fixed. A drive shaft 53 of the servo motor 52 penetrates the upper bracket 50A, and a pinion 54 is connected to a tip of the drive shaft 53. The pinion 54 is engaged with a rack 56 fixed along the longitudinal direction of the beam section 40. Guide rails 58, 58 are fixed to the side surface and the lower surface of the beam portion 40 along the longitudinal direction of the beam portion 40, and the guide rails 58, 58
Guide blocks 60, 60 fixed to are mounted slidably. Therefore, when the servomotor 52 is operated, the cutter 34 is moved along the longitudinal direction of the beam section 40 by the feeding action between the pinion 54 and the rack 56. The servo motor 52 is connected to the CPU 30 of FIG.
Is controlled by

A cutter unit 47 shown in FIG. 3 includes a head 64 holding a cutter 62 at the tip, an air cylinder 66 for applying a pressing force to the cutter 62 via the head 64,
And a main body 68 to which the air cylinder 66 is fixed. By applying a pressing force in the Z direction to the cutter 62 by the air cylinder 66, a predetermined cutting line L is formed on the glass plate G of FIG. 4 sandwiched between the cutter 62 and the support roller 48. The operation of the air cylinder 66 is controlled by the CPU 30 shown in FIG.

The upper part of the main body 68 shown in FIG.
0 is rotatably supported via a bearing 70. A pulley 72 is fixed to an upper end of the main body 68, and the pulley 72 is connected to a pulley 76 via an endless belt 74. The pulley 76 is provided with a drive shaft 79 of a servo motor 78 for changing the running direction fixed to the moving frame 50.
It is fixed to. Therefore, when the servomotor 78 operates, the power is transmitted to the cutter unit 47 via the belt 74, and the cutter unit 47
2 about the axis of the shaft 2 so that the cutter 62
Is changed.

A pulley 80 for changing the running direction of the support roller 48 is fixed to a drive shaft 79 of the servo motor 78. The pulley 80 includes a pulley 82 for power transmission.
And a pulley 82 is connected to a shaft 86,
It is connected to the head 94 of the support roller 48 via a pulley 88, a belt 90, and a pulley 92. Since the head 94 is rotatably supported by the moving frame 50, when the servo motor 78 operates, its power is transmitted to the head 94 via the above-described power transmission system. Thereby, the traveling direction is changed so that the support roller 48 is directed in the same direction as the cutter 62 in conjunction with the traveling direction changing operation of the cutter 62. As described above, when the support roller 48 is arranged below the cutter 62 and the support roller 48 is directed in the same direction in conjunction with the running direction change operation of the cutter 62, the support roller 48 projects to the side of the suction table 18; Glass plate G (glass piece 11 to be folded down) in a stable support state
8) The cutting line L (see FIG. 4) can be stably processed. Unnecessary glass fragments 118 that have been folded down by a folding machine 36 (see FIG. 1) described below fall on the cullet chute 96 in FIG. 3, and the cullet chute 96 moves and rotates as indicated by a two-dot chain line in FIG. It is collected in the cullet hopper 46 of FIG.

The moving block 51 of the moving frame 50 in FIG.
X is set by a ball screw device 98 fixed to the moving frame 50.
It can be moved in any direction. The ball screw device 98
It comprises a servomotor 100, a ball screw 102, a ball nut (not shown), and guide rails 104, 104. The ball nut is fixed to the moving block 51, and the moving block 51 is slidable on the guide rails 104, 104. Supported. Therefore, when the servo motor 100 operates, the moving block 51 moves in the X direction by the feeding action of the ball screw device 98, so that the X direction positions of the cutter 62 and the support roller 48 can be adjusted. This servo motor 100 is also the CPU 30 of FIG.
Is controlled by

On the other hand, the folding machine 36 shown in FIG. 5 comprises a press head (folding means) 106, a support pin 108 and the like.
Are fixed to a moving block 109 formed in a substantially inverted U-shape so as to face the glass plate G therebetween. The moving block 109 is fitted to the moving frame 110 so as to be movable in the X direction.

A servo motor 112 is fixed to the upper bracket 110A of the moving frame 110. Servo motor 1
A drive shaft 12 (not shown) penetrates the upper bracket 110A, and a pinion (not shown) is connected to the tip of the drive shaft. This pinion is engaged with a rack 56 fixed along the longitudinal direction of the beam portion 40. I have. The movable frame 110 is attached to the guide rail 58 fixed to the side surface and the lower surface of the beam portion 40.
A guide block (not shown) fixed to the control unit is slidably mounted. Therefore, when the servomotor 112 operates, the folder 36 is moved along the longitudinal direction of the beam unit 40. This servo motor 112 is also the CP of FIG.
It is controlled by U30.

The press head 106 shown in FIG. 5 is fixed to a piston 116 of an air cylinder 114. When the piston 116 is extended, a force in the folding direction is applied from the press head 106 to the glass plate G shown in FIG. Thereby, the glass plate G is split along the cutting line L, and the broken glass pieces 118 are cut.
Falls onto the cullet chute 96 shown by the two-dot chain line in FIG. The operation of the air cylinder 114 is controlled by the CPU 30 shown in FIG.

As shown in FIG. 6, the pressing position P1 of the press head 106 against the glass plate G is offset by S from the pressing position P2 of the support pin 108 toward the glass piece 118. Press head 106 and support pin 108
When the glass plate G is folded by using
The glass plate G is pressed by the press head 106 with the cutting line L positioned just above the reference numeral 8. Accordingly, the pressing force from the press head 106 is applied to the cut line L as a bending force, so that the glass plate G can be smoothly folded along the cut line L. Thus, the press head 106 and the support pin 108
If the position is set in advance, an underlay plate called a folding plate corresponding to the shape of the glass product is not required, so that the job change time can be substantially eliminated.

The moving block 109 in FIG.
The ball screw device 120 fixed to 0 is movable in the X direction. The ball screw device 120 includes a servo motor 122, a ball screw 124, a ball nut (not shown), and guide rails 126, 126. The ball nut is fixed to the moving block 109. 126
Slidably supported by Therefore, when the servo motor 122 operates, the moving block 109 moves in the X direction by the feeding action of the ball screw device 120, so that the positions of the press head 106 and the support pins 108 in the X direction can be adjusted. This servo motor 122 is also controlled by the CPU 30 of FIG.

Incidentally, the chamfering machine 16 shown in FIG.
2. It comprises a dresser 134 and a laser outer diameter measuring device 136 for automatically measuring the wheel diameter of the chamfering grindstone.

The grinding wheel rotating device 130 has a spindle motor 138, and the spindle motor 138
The rotation force is connected to a chuck (not shown) in the transmission 40. The chuck is rotatably supported by a support member in the casing 140 via a rotation shaft (not shown). As shown in FIG.
While the second shank 144 is detachably supported,
At the lower end of the shank 144, a chamfering grindstone 148 whose grinding surface 146 is curved inward is fixed coaxially. Further, the chamfering grindstone 148 is housed in the wheel cover 150, and the wheel cover 150 is
0 is attached to the lower end. Wheel cover 15
0 has an opening 152 formed around it, and brushes 154 and 154 are attached to the upper and lower edges of the opening 152, respectively. Also, the grinding surface 146 of the chamfering grindstone 148
Are supported at the center of the opening 152. Then, the glass plate G to be chamfered has the opening 152.
From inside into the wheel cover 150 and the chamfering grindstone 14
8 chamfered.

Sprinkling pipes 156 and 156 are provided above and below the chamfering grindstone 148, respectively, and nozzles 158 and 15 are provided at ends of the sprinkling pipes 156 and 156, respectively.
8 are formed. The nozzles 158 and 158 are arranged at the grinding position of the chamfering grindstone 148, that is, at the position where the grinding fluid is sprayed to the contact position between the peripheral edge of the glass plate G and the grinding surface 146. Therefore, when the peripheral edge of the glass plate G is ground by the grinding surface 146 of the chamfering grindstone 148, the grinding liquid can be supplied to the grinding position. In this case, the opening 152
Is substantially closed by the brushes 154 and 154, the grinding fluid supplied to the grinding position does not scatter from the opening 152 to the outside of the casing 150.

Next, the operation of the apparatus 10 for processing a glass sheet G configured as described above will be described.

First, the shape information of the glass plate G to be processed is given to the CPU 30 by the external input device 32 or the like. Based on the shape information, the CPU 30 determines whether the table moving device 26, the cutting machine 34, the folding machine 36, and the chamfering machine 1
6 is controlled.

First, when the glass plate G is suction-held on the suction table 18, the CPU 30 moves the table moving device 26.
Is controlled, and the glass sheet G is conveyed to the cutting machine 34. In the cutter 34, the position of the cutter 62 is set in advance by the servomotors 52, 78, 100 to a position corresponding to the shape of the glass plate G. Then, when the cutter 62 is located above the start position of the cutting line L of the glass plate G, the air cylinder 66 is controlled to move the cutter 62 downward, and the cutter 6
A pressing force of 2 is applied to the glass plate G. Then, the servo motor 78 and the table moving device 26 are controlled, and the glass plate G
Is moved with respect to the cutter 62 to form a desired cutting line L on the glass plate G. That is, the direction of the cutter 62 is changed by controlling the servomotor 78, and
The glass plate G is controlled by controlling the table moving device 26.
Are controlled in the X and θ directions.

Next, when the cutting is completed, the cutter 62 is retracted upward from the glass plate G by controlling the air cylinder 66. Then, the glass plate G is attached to the suction table 1.
In the state where the glass plate G is held by suction at step 8, the table moving device 26 is controlled to convey the glass plate G to the two folding machines 36, 36.
Alternatively, the two folding machines 36, 36 are moved toward the glass plate G. In each folding machine 36, the servo motors 112, 1
22, the position of the press head 106 is set in advance to a position corresponding to the cutting line L. Also, at this time, the cutter unit 47 and the support roller 48 are retracted from the glass plate G by operating the servomotor 100 so that the cutting machine 34 does not hinder the folding process by the folding machine 36. Then, when the support pin 108 of the folding machine 36 is abutted directly below the cutting line L, each air cylinder 114 is driven, and each press head 106 simultaneously presses the glass plate G, and the glass plate G is moved to the cutting line L. Fold along. When the folding of one side of the glass plate G is completed, the table moving device 26 is controlled, the suction table 18 is moved by a predetermined amount in the X direction and the θ direction, and the glass piece 118 of the next one side is divided. I do. In this manner, the suction table 18 is moved in the X direction and the θ direction, and the glass pieces 1 on all sides are moved.
18 folds are performed. The interval between the press heads 106 is changed each time according to the length of the glass piece 118 to be split. In the cutting and folding operation, instead of performing the cutting operation at once according to the shape of the glass plate, the operation of “cutting” and “folding” each side may be repeated. In this embodiment, the position control of the cutter 62, the press head 106, and the support pin 108 is controlled by the X-axis and the Y-axis. However, the control of the axis having the rotation of the Y-axis and the θ-axis is also possible.

Next, when the folding process is completed, the table moving device 26 is controlled to remove the glass sheet G from the chamfering machine 16.
Transport to Then, the peripheral edge of the glass plate G is chamfered with a grinding wheel 1.
48 and the glass plate G
The entire edge of the glass plate G is chamfered while the suction table 18 is rotated and moved in the X direction by controlling the table moving device 26 so that the edge of the glass plate G is along the ground surface 146. The processing of one glass plate G by the processing device 10 is thus completed,
The glass plate G is processed into a glass product.

As described above, in the present invention, the processing machines 34, 3
Without manually transporting the glass plate G between 6, 16
Since the glass sheet G is transported between the processing machines 34, 36, and 16 using one suction table 18, the processing machines 34, 3 and 16 are used.
The glass plate G can be prevented from being damaged when the glass plate is transported between 6 and 16.

Further, since the displacement of the glass plate G on the suction table 18 does not occur during the cutting, folding and chamfering steps of the glass plate G, the margin for chamfering can be set small. Therefore, the processing time in the chamfering machine 16 can be shortened, so that an accurate glass product can be manufactured in a short time. Further, since the suction table of each of the processing machines 34, 36, and 16 is also used by one suction table 18, the space occupied by the apparatus can be reduced.

[0038]

As described above, according to the method and apparatus for processing a glass sheet according to the present invention, a single suction table is used without manually transferring the glass sheet between the processing machines. Since the glass sheet is transported between the processing machines, it is possible to prevent the glass sheet from being damaged when the glass sheet is transported between the processing machines. In addition, since the displacement of the glass plate on the suction table does not occur during the process of processing the glass plate, the margin for chamfering can be set smaller.
Therefore, the processing time in the chamfering machine can be reduced,
Accurate glass products can be manufactured in a short time. Further, since the suction table of each processing machine is also used by one suction table, the space occupied by the apparatus can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a glass sheet processing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a control system of the glass sheet processing apparatus.

FIG. 3 is a structural diagram of a cutting machine of a glass sheet processing apparatus.

FIG. 4 is an explanatory view showing a positional relationship between a cutter and a support roll of the cutter shown in FIG. 3;

FIG. 5 is a structural view of a folding machine of a glass sheet processing apparatus.

FIG. 6 is an explanatory diagram showing a positional relationship between a press head and a support pin of the folding machine shown in FIG.

FIG. 7 is an overall perspective view of a chamfering machine of a glass sheet processing apparatus.

FIG. 8 is an enlarged cross-sectional view showing a structure of a grindstone portion of the chamfering machine shown in FIG.

[Explanation of symbols]

G: glass plate, 10: processing device, 12: suction transport device,
14 ... cutting and folding machine, 16 ... chamfering machine, 18 ... suction table, 26 ... table moving device (table driving means), 3
0: CPU (control means), 34: cutting machine, 36: folding machine, 48: support roller, 62: cutter, 106: press head (folding means), 108: support pin

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3C049 AA03 AB03 AB04 BB06 CA06 CB03 3C060 AA08 CB14 CB15 3C069 AA02 BA04 CA11 EA01 EA02 4G015 FA03 FA04 FB01 FC02 FC10 FC11 FC14

Claims (2)

[Claims] 1. A glass plate is sucked and held by a suction table, the suction table is transported to a cutting machine, and a cutting line having a desired shape is formed into a glass plate by a cutter of the cutting machine. With the suction table held by the suction table, the suction table is transported to a folding machine,
The folding means of the folding machine folds the glass plate along the cutting line.After the completion of the folding process, the suction plate is conveyed to a chamfering machine while the glass plate is suction-held by the suction table. A method for processing a glass sheet, comprising chamfering the periphery of the glass sheet with a grinding wheel of a chamfering machine. 2. A cutting machine having a cutter for processing a cutting line of a desired shape on a glass plate, a folding machine having a folding means for breaking the glass plate along the cutting line, and a grindstone for chamfering a peripheral edge of the glass plate. A suction table holding the glass plate by suction; and moving the suction table to the cutting machine, folding machine, and chamfering machine, and suctioning about an axis orthogonal to the suction surface of the suction table. Suction table driving means for rotating the table, controlling the operation of the suction table driving means so that a cutting line of a desired shape is formed on the glass plate in the cutting machine, the glass plate in the folding machine along the cutting line The operation of the suction table driving means is controlled so as to be split, and the operation of the suction table driving means is controlled so that the periphery of the glass plate is chamfered in the chamfering machine. Glass-plate working apparatus which is characterized by comprising a Gosuru control means.