JPH0358869B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention processes glass plates of various shapes such as circular, oval, rectangular and various curved shapes, such as wide chamfering (beveling), while controlling the operation of the machine using numerical commands. Concerning numerically controlled processing machines for glass plates.

Generally, the process of wide chamfering (beveling), which is an example of glass plate processing work, includes an edge edge polishing process (edge cutting or edge grinding), chamfer cutting (bevel cutting with a diamond wheel),
It is necessary to go through various processes such as chamfer grinding (smoothing with a grindstone, etc.) to grind the chamfered surface, and polishing process to polish the chamfered surface.

However, in numerically controlled processing machines for glass plates, machine coordinate axes are provided so that each processing wheel attached to the processing head runs along the edge of each glass plate in each of these processes, and each of these axes is set numerically. It is necessary to control and sequentially transport and supply glass plates to be processed to each of these processes.

By the way, in order to control all of the above-mentioned processes, a large number of control axes are required, which requires a large number of numerical control devices, and a numerical control device that can perform complex and advanced control.As a result, the control program becomes complicated. Since it is difficult to manufacture such machines, it is possible to simultaneously control the working motion of each process using a simple numerical control device by omitting the mechanical connection of a large number of complex control axes that govern the machining of each process. It is necessary to control it.

In this case, since the machining heads in each process perform the same operation, it is required that the relative positions of the glass plate to the machining head in each process be precisely matched.

Therefore, an object of the present invention is to sequentially arrange the apparatuses for each of the above-mentioned processing steps in a straight line, and to reliably automatically supply, transport, and automatically position the glass plate to the apparatuses for each of these processing steps. It is an object of the present invention to provide a numerically controlled glass plate processing machine that can quickly and accurately perform desired processing on glass plates.

According to the present invention, the object is to provide a plurality of fixing tables configured to horizontally fix each of a plurality of glass plates to be processed and arranged in a straight line, and movable along an axis extending in the horizontal direction. a table for attaching the fixed table, a processing head table configured to be movable in a direction orthogonal to the direction of movement of the table, and a processing head table configured to be movable in a direction perpendicular to the direction of movement of the table; a plurality of machining heads arranged in a straight line; a turning device attached to the machining head stand for collectively horizontally rotating the machining heads; a conveying device for linearly conveying the glass plates by lowering the glass plates all at once to position and supply the glass plates to each of the fixing bases; A lifting device configured to take out the glass plate from each of the fixing bases, and a lifting device configured to control the respective operations of the table, the processing head, the rotating device, the conveying device, and the lifting device. This is achieved by a numerically controlled processing machine for glass plates, which has a numerical control device connected to each of the conveying device and the lifting device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a numerically controlled processing machine for glass plates according to the present invention will be described below with reference to the drawings.

The glass plate numerically controlled processing machine according to the present invention has the following features:
A plurality of fixing tables 2 for horizontally setting glass plates are arranged in a straight line, and a table 1 (X-axis) with a moving axis along one direction in the horizontal direction and a plurality of processing heads 3 are also arranged in a straight line. a cross table 4 (Y-axis) which is an example of a processing head table which is mounted on the table 1, is movable along the other direction perpendicular to the movement axis of the table 1, and moves linearly along the other direction;
A plurality of various machining sections 6 are formed by a rotating device 5 (having a C axis rotating around a Z axis as a central axis) which simultaneously horizontally rotates the required number of the machining heads 3 installed on this cross table 4. The structure is such that simultaneous numerical control is possible.

The fixing bases 2 for the glass plate of the table 1 are provided at five equally spaced locations, for example, as shown in FIG. A glass plate is horizontally fixed to each fixing table 2. For example, these fixing bases 2 have a suction cup structure for adsorbing a glass plate, and are connected to a vacuum pump or the like to suck and discharge air.

The table 1 includes automatic supply, automatic extraction, and positioning of glass plates to the various processing units 6.
A supply device 40 is installed which serves as both a conveying device for conveying and a lifting device. Note that details of this supply device 40 will be described later.

Further, as shown in the first part, the table 1 has a left-right axis (X-axis) which is one direction in the horizontal direction, and is supported by a slide device 7 so as to move linearly along this axis. The slide device 7 includes a slide bearing rig 8 attached to the lower surface of the table 1 and a track rail 10 installed on a machine stand 9.

Of course, the table 1 is equipped with a feeding machine,
It includes a feed screw 12 connected to a servo motor 11 and a nut 13 attached to the table 1.

This cross table 4 is also equipped with feed mechanisms 34 and 34 on both sides. These feeding mechanisms 34
is equipped with a feed screw 35 supported on the machine base 9 and a nut 36 attached to the cross base 4, and both the left and right feed screws 35, 35 are connected to a bevel gear train 37, for example.
The connecting shaft 38 is connected to a servo motor 39 via a transmission means such as a timing belt 38a.

A cross base 4 is mounted above the table 1 and has an axis (Y-axis) that moves linearly along the front-rear direction, which is the other direction in the horizontal direction orthogonal to the direction of movement of the table 1. That is, the cross stand 4 is supported by the machine stand 9 via slide devices 15, 15 on both sides, and these slide devices 1
5 includes a slide bearing 16 and a track rail 17 attached to the cross base 4. The cross table 4 is moved linearly in the front and back direction in a horizontal plane by these slide devices 15, 15 on both sides.

This cross table 4 is equipped with a plurality of processing heads 3, for example four, which are arranged in the order of process: an etching head 3A, a bevel cutting head 38, a smoothing head 3C, and a polishing head 3D.

The etching head 3A simply performs cutting or grinding (also referred to as edge finishing) of edges (end faces), and performs cylindrical cutting and grinding using a flat diamond wheel 104.

The bevel cutting head 3B is in charge of chamfer cutting, and the cup type diamond wheel 26 covers the glass plate and performs bevel grinding in an inclined position.

The smoothing head 3C is in charge of grinding (also referred to as smoothing or abrasive) a bevel-cut surface, and a grinding wheel 101 such as a cup type grindstone covers the glass plate and performs bevel grinding in an inclined position.

The polishing head 3D is in charge of polishing the surface after grinding, and the cup-type felt wheel 102 and the like similarly cover the glass plate and perform polishing in an inclined position.

Next, the structure of each processing head 3 will be explained.

As shown in FIG. 4, the etching head 3A is controlled to simply move along the linear XY axes, and the edge-sliding process is performed by cylindrical cutting and grinding while following the contour of the edge of the glass plate. A turning device 5 is not provided. This etching head 3A is connected to a motor 1 which also serves as a spindle.
8. A wheel 104 attached to the shaft of the motor 18 and a motor holding stand 20 for receiving and holding the motor 18 set are provided.

This motor holding stand 20 is attached to a slide 22 of a slide device 21 installed on the cross stand 4. This slide device 21 includes the slide 22, a feed screw 23 and a nut 19 for adjusting and moving the slide 22 up and down, and a slide base 24. As a result, the above feed screw 2
3, the vertical position of the etching head 3A and thus the etching wheel 104 can be adjusted.

Next, the bevel cutting head 3B, the smoothing head 3C, and the polishing head 3D are equipped with a turning device 5 as shown in the figure, and the shape and posture of the processing wheel that controls cutting, grinding, etc. Each one is different from the above-mentioned etching head 3A, but the other parts are almost the same. That is, it is provided with a motor 18 which also serves as a spindle, and a motor holder 20 which receives and holds the motor 18. Further, each head is provided with a rotating slide (not shown) so that the cutting and grinding angles of the grinding wheels 26, 101, and 102 can be changed, and the angle of the motor 18 can be changed. It is set on this rotary slide, and on the other hand, this rotary slide is mounted on the motor holding base 20 so as to be adjustable and rotatable. On the other hand, as shown in FIGS. 1 and 2, each of the motor holding stands 20 is held by a rotating device 5. As shown in FIGS.

Each of these turning devices 5 is connected to the slide device 21.
It is attached to the cross table 4 via. That is, each turning device 5 is attached to a slide 22, and can be freely adjusted and moved in the vertical direction by a feed screw 23, thereby controlling the processing heads 3B, 3C, and 3.
C cutting/grinding wheels 26, 101, 10
The cut into the glass plate 2 can be adjusted. As shown in FIG. 1, the swing device 5 includes a housing body 28, a pivot shaft 29 inserted into the housing body 28, and a plurality of pivot shafts 29 that hold the pivot shaft 29 in the housing body 28 so as to be horizontally pivotable. It consists of an assembled body with a bearing (not shown).
The housing body 28 is attached to the slide device 21 installed on the cross base 4, especially the slide 2.
It is installed on 2.

Bevel cutting head 3B, smoothing head 3
Each turning device 5 of C and polishing head 3D uses the Z axis perpendicular to the linear control axis The rotating shaft 29 is connected at its upper part to a servo motor 31 (C-axis control) via a transmission means 32 such as a timing belt.

As shown in FIG.
It passes through the bevel cutting point P, the bevel grinding point P, and the polishing point P, which are the work points currently in progress. Therefore wheel 26,101,1
02 are the current bevel cutting points P,
The wheels 26, 101, and 102 rotate horizontally around the bevel grinding point P and the polishing point P (numerically controlled according to the shape change of the glass edge), and each of the wheels 26, 101, and 102 performs cutting and grinding regardless of the shape change of the glass plate edge. Cutting while always keeping the same angle,
It is configured to perform grinding and polishing. That is, each wheel 26, 101, 10
2 performs cutting, grinding, and polishing while numerically controlled spinning is performed centering on each of the cutting section and the grinding section as necessary.

The numerical control method for the swing device 5 may use, for example, linear-circular combined interpolation that combines linear interpolation and circular interpolation as programming.

That is, while performing circular interpolation on the XY plane, the rotation of the C-axis is numerically controlled in proportion to the rotation angle of the circular arc.

Next, the system configuration and operation of the supply device 40 of the table 1 will be described.

The feeding device 40 is composed of a belt conveyor system, as shown in FIGS. 1 and 2,
This belt conveyor system 41 is a double conveyor system in which two single conveyors 42, 42 are arranged side by side, and these single conveyors 42, 42 are connected to each other and are integrated.

The belt conveyor system 41 is designed to move up and down. The belt conveyor system 41 is
The belt conveyor system 41 has a total of four jack screw devices 44 provided at the front, rear, and intermediate portions, and these jack screw devices 44 include a nut 46 attached to a conveyor frame 45 and a screw 47 that supports this nut 46. and a gearbox body 48 that holds this screw 47.
is attached to the table 1 directly or via a frame.

The gearbox bodies 48 are connected to each other by a shaft 49, and receive transmission from this shaft 49.
Rotate the screw 47. Of course, the shaft 49 is connected to a drive device 50 that receives automatic control commands.

On the other hand, the double single conveyor 42, 42
, of course, includes a belt 51, a drive drum 52, a tail drum 103, and a belt tensioning device 107, and the drive drums 52 of both vehicle body conveyors 42, 42 are connected by a shaft 106, and are configured to rotate as a unit. ing. Further, 54 in FIG. 3 is a motor with a reduction gear for driving the drive drum 52.

In FIGS. 3 and 4, the table 1 is fixed, and the cross table 4 is provided with a head table 105 and a servo motor 53 that move linearly along the X axis.

According to the present invention as described above, the etching head 3A, beveling cutting head 3B, smoothing head 3C, and polishing head 3D arranged in a row are united by the cross body 4 and move linearly in the direction along the Y axis. On the other hand, the fixing tables 2, which fix the glass plate and are arranged in a row, move linearly in the direction along the X-axis together by the table 1, and at the same time, the processing head 3B, which controls the bevelling, The numerically controlled turning movement of the turning device 5 attached to 3C and 3D is simultaneously numerically controlled to control the chamfering of the glass plate, and the feeding device 40 attached to this processing device is as follows. Glass plates are automatically processed one by one by performing various operations. That is, the processing device operates with the processed glass suctioned and fixed to the fixing table 2 of the etching work section at the lowering position of the supply device 40, and when the contour following of the processing head is completed (cycle operation), the fixing table 2
releases the glass plate, and the supply device 40 rises to receive the glass plate.The conveyor belt moves to move the glass plate in parallel to the next bevel cutting section and stops at the position, and the supply device 40 descends again. Then, the fixing base 2 suctions and fixes the glass plate. At this time again, the next processed glass plate is set on the fixing table 2 of the etching part from which the glass plate has been released. The processing equipment then operates again. In this way, the glass plates are conveyed while being automatically supplied one after another to various processing sections.

From the above, in the numerically controlled glass plate processing machine of the present invention having the above-described configuration, the operation of collectively transporting each of the plurality of glass plates to be processed by the transport device to each processing step is carried out. , configured to be carried out in cooperation with the operation of raising each of the glass plates at once by the lifting device and the operation of lowering each of the glass plates at once by the lifting device. Therefore, the operation of linearly moving, stopping, and fixing each of the glass plates to a predetermined position with respect to each processing head in the corresponding processing process, and the operation of moving each of the glass plates to the fixed position. Each of the operations of taking the glass plate out from a fixed position and moving it linearly can be performed on the glass plate at once, and in a series of these operations, the relative position of each glass plate changes. It can be maintained in a constant state without any change.
In other words, by simply adjusting the relative positions of the glass plates in accordance with the relative spacing of the processing heads at the beginning, fine positioning of the glass plates can be adjusted in the middle of subsequent processing operations. There is no need to make new adjustments or the like, and therefore desired processing on the glass plate can be performed quickly while maintaining high accuracy.

[Brief explanation of drawings]

FIG. 1 is a front view of a numerically controlled processing machine for glass plates according to the present invention, FIG. 2 is a plan view of the processing machine shown in FIG. 1, and FIG. 3 is another view of the numerically controlled processing machine for glass plates according to the present invention. The front view of the embodiment, FIG. 4 is the third
FIG. 2 is a plan view of the processing machine shown in the figure. 1...Table, 2...Fixed stand, 3...Processing head,
4...Cross stand, 5...Swivel device, 6...Feed mechanism, 3
A... Etching head, 3B... Bevel cutting head, 7... Slide device, 9... Machine base, 18... Motor, 20... Motor holding base, 21... Slide device,
26...wheel, 27...glass plate, 40...supply device.

Claims (1)

[Claims] 1. A plurality of fixing tables configured to horizontally fix each of a plurality of glass plates to be processed and arranged in a straight line, and said fixing table configured to be movable along an axis extending in the horizontal direction. a table for mounting, a machining head stand configured to be movable in a direction perpendicular to the moving direction of the table, and a plurality of machining heads arranged linearly on the machining head stand along the direction in which the fixed tables are arranged. a processing head, a turning device attached to the processing head stand for horizontally rotating the processing heads all at once, and a conveyor for linearly transporting the glass plates all at once to each of the processing heads. and positioning and supplying the glass plates to each of the fixing bases by lowering the glass plates all at once, and taking out the glass plates from each of the fixing bases by raising the glass plates all at once. A lifting device configured as such, and each of the table, the processing head stand, the turning device, the conveying device, and the lifting device for controlling the respective operations of the table, the processing head stand, the turning device, the conveying device, and the lifting device. A numerically controlled processing machine for glass plates, comprising a numerical control device connected to.