JPH0624777A - Numerically controlled cutting device for glass plate - Google Patents

Abstract

PURPOSE:To enable to rapidly and accurately drive a cutter head to produce a high quality processed product improved in the working efficiency by directly driving the cutter head in the direction of the X axis and synchronously operating direct driving means placed on both the sides of a bridge frame in the direction of the Y axis. CONSTITUTION:Motors 61, 62 are synchronously driven under the control of a numerical controller 91 to synchronously rotate the main bodies of ball screw nuts 7, 8, whereby both the ends 5, 6 of a bridge frame 4 are similarly synchronously transferred in the direction of the Y axis. A motor 71 is simultaneously driven under the control of a device 91 to rotate the main body of a ball screw nut 16, whereby a base 72 is transferred in the direction of the X axis. The cutter head 2 is transferred along a cutting line C to be formed by the transfer of the bridge frame 4 in the direction of the Y axis and by the transfer of the base 72 in the direction of the X axis. Simultaneously, an air pressure cylinder device 22 is operated with the device 91 to lower the cutter block, whereby a cutter blade is pressed on the surface of the glass plate 25 to form the prescribed cutting line C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a numerically controlled cutting device for glass sheets.

[0002]

2. Description of the Related Art In a conventional glass plate cutting apparatus,
The screw shaft is connected to the moving table on which the cutter head is mounted via nuts, and this screw shaft is connected to the output rotation shaft of the electric motor via pulleys, belts, etc., and the screw shaft is rotated by the rotation of the output shaft of the electric motor. Is rotated to move the moving table in, for example, the X direction, the screw shaft is connected to the bed on which the glass plate is placed via a nut, and the screw shaft is connected to the output rotation shaft of the electric motor via a pulley, a belt, or the like. The output shaft of the electric motor to rotate the screw shaft to rotate the bed, for example, Y
The cutter blade of the cutter head is moved relative to the glass plate along the shape to be cut.

[0003]

By the way, in the conventional glass plate cutting apparatus as described above, since a relatively long screw shaft is rotated, a large bending vibration easily occurs on the screw shaft in a critical speed range. Therefore, it is difficult to rotate the screw shaft at a high speed to move the moving table and the bed at a high speed to improve the work efficiency.

The present invention has been made in view of the above points, and an object thereof is to move a cutter head relative to a glass plate at a high speed and accurately relative to a shape to be cut. Therefore, it is an object of the present invention to provide a numerically controlled cutting device for a glass plate, which can improve work efficiency and can obtain a high-quality processed product.

[0005]

According to the present invention, the object is to support a bridge frame provided with X-direction linearly moving means for linearly moving the cutter head in the X-axis direction so as to be movable on both sides in the Y-direction, Ball screw nuts are rotatably attached to both sides of this bridge frame, and each ball screw nut is screwed into each of a pair of ball screws extending in the Y direction, and both ball screw nuts are rotated in synchronization to form a bridge frame. This is achieved by a numerically controlled cutting device for a glass plate, which is provided with a Y-direction linear moving means for linearly moving in the Y-direction.

According to the present invention, another object is to arrange another ball screw extending in the X direction on the bridge frame, and freely rotate another ball screw nut screwed to the other ball screw to the X direction direct-acting means. It is achieved by the above-mentioned numerically controlled cutting device for a glass plate, which is mounted on the glass plate, and the cutter head is linearly moved in the X direction by rotating another ball screw nut by the X-direction linear moving means.

Further, according to the present invention, the above object is to support a bridge frame for supporting a cutter head so as to be movable in the Y direction on both sides, and to attach ball screw nuts to the both sides of the bridge frame so as to be rotatable, respectively. Of a glass plate provided with Y-direction linearly moving means for screwing each ball screw nut into each of a pair of ball screws extending in parallel and rotating both ball screw nuts synchronously to directly move the bridge frame in the Y direction. It is also achieved by a numerically controlled cutting device.

[0008]

In the numerically controlled cutting apparatus for glass plates of the present invention, Y
Both ball screw nuts are synchronously rotated by the direction direct-moving means, whereby the bridge frame is moved in the Y direction, while the cutter head is directly moved in the X direction by the X-direction direct moving means. Therefore, the cutter head is moved at a high speed along the shape of the glass plate to be cut in the XY plane.

The present invention will now be described in detail with reference to the preferred embodiments shown in the drawings. The present invention is not limited to these specific examples.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, a numerically controlled cutting device 1 for a glass plate of the present embodiment has a bridge frame 4 equipped with an X-direction linearly moving means 3 for linearly moving a cutter head 2 in the X-axis direction on both sides 5 and 6. Supported movably in the direction, ball screw nuts 7 and 8 are rotatably attached to the both sides 5 and 6 of the bridge frame 4, and the ball screw nuts 7 are respectively attached to a pair of ball screws 9 and 10 extending in the Y direction. And 8 are screwed together, and both ball screw nuts 7 and 8 are synchronously rotated to provide a Y-direction linear movement means 11 for linearly moving the bridge frame 4 in the Y direction. Another ball screw 12 extending in the direction of the ball screw nut is rotatably mounted, and another ball screw nut 13 screwed to the ball screw 12 is rotatably attached to the X-direction linearly moving means 3, and the X-direction linearly moving means 3 allows the ball screw nut to be attached. 3 by rotating the cutter head 2 X
It is made to move in the direction.

The cutter head 2 includes an air cylinder device 22 attached to a bracket 21, and a cutter block 24 having a cutter blade 23 and attached to a piston rod of the air cylinder device 22. By supplying and discharging high-pressure air to the device 22, the cutter block 24 is moved up and down, and the cutter blade 23 is advanced and retracted with respect to the surface of the glass plate 25. The cutter blade 23 is pressed against the surface of the glass plate 25 by the air pressure of the air cylinder device 22, so that the glass plate 25 has a cutting line (a score line).
C is attached.

Sliders 31 and 32 are attached to the lower surfaces of both ends 5 and 6 of the bridge frame 4, and the slider 31 extends along the Y direction and is attached to a bed 33 on which the glass plate 25 is placed. 34 is slidably fitted in the Y direction, and the slider 32 is also attached to the bed 3
The rail 35 is slidably fitted in the Y-direction and attached to the rail 35 extending in the Y-direction. Thus, the bridge frame 4 is guided by the rails 34 and 35 to be movable in the Y-direction.

The ball screws 9 and 10 are fixed to and supported by the bed 33 via the supporting members 37 at both ends thereof, and the ball screw nuts 7 and 8 screwed into the ball screws 9 and 10 are formed in the same manner. The ball screw nut 7 will be described below. The ball screw nut 7 includes a nut body 44 rotatably mounted inside a cylindrical member 42 attached to the bridge frame 4 with bolts 41 via balls 43, and holes 45 and 45 formed in the nut body 44. And a large number of steel balls 49 continuously connected to a spiral hole 48 formed by the screw groove 46 of the ball screw 9 and the spiral groove 47 of the inner peripheral surface of the nut body 44. The rotation of the nut body 44 around the screw shaft 9 moves the nut body 44, and thus the bridge frame 4 connected to the nut body 44 via the ball 43 and the cylindrical member 42, in the Y direction.
The nut body 44 is provided with a toothed pulley 52 by a bolt 51.
Is fixed, and the timing belt 5 is attached to the pulley 52.
It is multiplied by 3. A toothed pulley 54 is also fixed to a nut body (not shown) of the ball screw nut 8, and a timing belt 55 is hung on the pulley 54.

An electric motor 61 of the Y-direction linear moving means 11 provided on each of both ends 5 and 6 of the bridge frame 4.
The output rotary shafts of and 62 have toothed pulleys 63 and 64.
Are fixed, and timing belts 53 and 54 are hung on the pulleys 63 and 64, respectively. When the motors 61 and 62 are operated in synchronism to rotate their output rotary shafts, on the other hand, the nut body 44 is passed through the pulley 63, the timing belt 53 and the pulley 52.
Is rotated, and on the other hand, the nut body of the ball screw nut 8 is rotated via the pulley 64, the timing belt 55, and the pulley 54, and thus both ends 5 and 6 of the bridge frame 4 are synchronously moved in the Y direction.

The X-direction linear movement means 3 is equipped with an electric motor 71, the motor 71 is attached to a base 72 via bolts 73, and the base 72 to which the bracket 21 is also attached has bolts 74. A slider 75 is attached via. The slider 75 is slidably fitted in a rail 76 attached to the side surface of the bridge frame 4 in the X direction, and thus the base 72 is movable in the X direction.

Both ends of the ball screw 12 are fixed and supported on the upper surface of the bridge frame 4 via supporting members 81 and 82, and the ball screw nut 13 is formed in the same manner as the ball screw nuts 7 and 8. , Ball screw 1
The nut main body 83 screwed to 2 is rotatably attached to the base 72, and the timing belt 85 is hung on the toothed pulley 84 fixed to the nut main body 83. It is also hung on the toothed belt 86 attached to the output rotating shaft of the motor 71, and when the motor 71 is operated to rotate the output rotating shaft, the pulley 86, the timing belt 85, and the pulley 8
The nut main body 83 is rotated via 4 and the base 7
2 and the cutter head 2 mounted on the base 72 are moved in the X direction.

The motors 61, 62, 71 and the pneumatic cylinder device 22 are respectively connected to the numerical control device 91, and the motors 61, 62, 71 and the pneumatic pressure are controlled by a program stored in advance in a storage device of the numerical control device 91. The cylinder device 22 is controlled in operation.

The glass plate numerically controlled cutting device 1 thus formed operates as follows. Under the control of the numerical control device 91, the motors 61 and 62 are operated in synchronization, whereby the nut bodies of the ball screw nuts 7 and 8 are rotated in synchronization, and both ends 5 and 6 of the bridge frame 4 are also synchronized. Are moved in the Y direction. At the same time, the numerical control device 91 controls the motor 71 to operate, whereby the nut body of the ball screw nut 13 is rotated, and the base 72 is moved in the X direction. The cutter head 2 is moved along the cutting line C to be attached by the movement of the bridge frame 4 in the Y direction and the movement of the base 72 in the X direction. When the cutter head 2 is moved to the portion to which the cutting line C is to be attached, the numerical controller 91 operates the pneumatic cylinder device 22 to lower the cutter block 24 and press the cutter blade 23 against the surface of the glass plate 25. As a result, a predetermined cutting line C is attached to the surface of the glass plate 25 corresponding to the shape to be broken.

By the way, in the numerically controlled cutting device 1 for a glass plate, the nut bodies of the ball screw nuts 7, 8 and 13 which are screwed into the long ball screws 9, 10 and 12 are rotated without rotating them. To move the bridge frame 4 and the base 72 in the Y direction and the X direction so that the cutter head 2 is attached to the portion of the glass plate 25 to which the cutting line C should be attached.
Since the long ball screws 9, 10 and 12 are rotated at a high speed, bending vibration does not occur, and on the contrary, the nut body of the ball screw nuts 7, 8 and 13 can be easily rotated at a high speed. Therefore, the cutter head 2 can be moved at high speed. Since the nut bodies of the ball screw nuts 7 and 8 are rotated in synchronization, the cutter blade 23 can be moved accurately.

Although the cutter head 2 is moved in the X direction in the above specific example, the cutter head 2 may be fixedly attached to the bridge frame 4 and the glass plate 25 may be moved in the X direction by a similar mechanism. Good.

[0021]

As described above, according to the present invention, both ball screw nuts are synchronously rotated to move the bridge frame to Y.
Since the Y-direction direct-moving means for direct-moving in the direction is provided, the cutter head can be moved in the Y-direction at high speed, and both ends of the bridge frame are moved in synchronization, so that the Y-direction of the cutter head can be accurately adjusted. A directional move can be made.

[Brief description of drawings]

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

FIG. 2 is a front view of the specific example shown in FIG.

FIG. 3 is a partial detailed cross-sectional view of the specific example shown in FIG.

[Explanation of symbols]

 1 Glass Plate Numerically Controlled Cutting Device 1 2 Cutter Head 3 X Direction Direct Acting Means 4 Bridge Frame 7, 8 Ball Screw Nut 9, 10 Ball Screw 11 Y Direction Direct Acting Means 12 Other Ball Screws 13 Other Ball Screw Nuts

Claims (3)

[Claims] 1. An X for directly moving a cutter head in the X-axis direction.
A bridge frame provided with a direction direct-moving means is movably supported on both sides in the Y direction, and ball screw nuts are rotatably mounted on both sides of the bridge frame, and each ball is attached to each of a pair of ball screws extending in the Y direction. A numerically controlled cutting device for a glass plate, which is provided with Y direction linearly moving means for screwing screw nuts and rotating both ball screw nuts in synchronism to directly move the bridge frame in Y direction. 2. Another ball screw extending in the X direction is arranged on the bridge frame, and another ball screw nut screwed to the other ball screw is rotatably attached to the X direction direct-acting means.
The numerically controlled cutting device for a glass sheet according to claim 1, wherein another ball screw nut is rotated by the X-direction linear movement means to directly move the cutter head in the X-direction. 3. A bridge frame that supports the cutter head is movably supported on both sides in the Y direction, and ball screw nuts are rotatably attached to both sides of the bridge frame, and a pair of ball screws extending in the Y direction are respectively attached. A numerically controlled cutting device for a glass plate, which is provided with Y-direction linearly moving means for screwing each ball screw nut into the above and rotating both ball screw nuts in synchronism to move the bridge frame in the Y direction.