JPS6327147B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention controls the operation of a machine using numerical commands to process glass plates of various shapes such as circular, oval, rectangular, and various other curved shapes, such as wide chamfering (beveling). This paper relates to a numerically controlled processing machine for glass plates.

In addition, the wide chamfering (beveling) referred to here includes the edge edge grinding process (edge cutting or edge grinding), the chamfer cutting process (bevel cut with a diamond wheel), the chamfer grinding process for grinding the chamfered surface (grinding wheel, etc.) smoothing),
It includes a polishing process for polishing the chamfered and ground surface, and is configured to go through a series of these processes.

However, in the numerically controlled processing machine for glass plates, in each of these steps, the processing head as a work head, especially the processing wheel as a working tool attached to the processing head, is run along the edge of the glass plate. It is necessary to have mechanical coordinate axes (X-axis, Y-axis, Z-axis) on the machine, and to numerically control each of these axes.

By the way, in order to control all of the above steps, there are many axes to be controlled, and as a result, many numerical control devices are required to control these axes. Furthermore, this numerical control device requires complex and advanced numerical control. Therefore, a program recorded on a control tape or the like for performing numerical control becomes complicated and difficult to create.

Therefore, an object of the present invention is to mechanically and integrally connect a large number of axes that control each processing operation in each of the above steps and which require complex numerical control, and to connect the axes integrally using a numerical control device. Even when trying to simultaneously numerically control the operations of each machining operation in each process in a group of connected axes, there is no need to prepare a separate program for each process, which facilitates the creation of the program. The aim is to provide a numerically controlled processing machine.

According to the invention, the purpose is to provide a table for holding a glass plate to be processed, and a table movable relative to the table in a first direction and a second direction orthogonal to the first direction. a working head support base; a first driving device provided between the work head support base and the base for causing the work head support base to move relative to the base; and a work head supported by the work head support base so as to rotate about a first axis extending parallel to a third direction perpendicular to the second direction, and a work head disposed on the second axis. a working tool attached to said working head; and a second working tool connected to said working head for causing said rotation of said working head.
a drive device, and a first drive device and a second drive device for numerically controlling the relative movement of the work head support base with respect to the table by the first drive device and the rotation of the work head by the second drive device, respectively. a numerical control device connected to each drive device of the power tool, and the second axis is non-coaxial with the first axis along a fourth direction in which the second axis passes through the working part of the power tool. This is accomplished by means of a numerically controlled processing machine for glass sheets, which is mounted on the working head via a displacement device which is movable in two orthogonal directions.

An embodiment of the present invention will be described below with reference to the drawings. The numerically controlled glass plate processing machine according to this embodiment has a plurality of fixing tables 2 arranged in a straight line as tables for setting the glass plate 1 horizontally.
and a table 4 equipped with a feeding device 3 for conveying the glass plate 1 along the direction in which these fixed tables 2 are arranged.
A plurality of processing heads 5 as working heads are arranged in a straight line like the fixed table 2, and numerically controlled along the first direction (X-axis direction) which is the direction in which the fixed table 2 is arranged. A machining head 6 (X-axis) that moves linearly, and a second direction that holds the machining head 6 and is perpendicular to the first direction, which is the direction of the linear movement of the machining head 6. Cross table 7 that moves linearly along (Y-axis direction)
(Y-axis) and a turning device which is attached to the processing head stand 6, is connected to the processing head 5 and is connected to a motor 37 as a drive device in order to simultaneously horizontally turn the required number of processing heads 5 by numerical control. It consists of 8. That is, the numerically controlled processing machine for glass plates according to the present embodiment has processing sections 9A to 6E, each of which serves as a working section for performing various processing operations on a plurality of glass plates 1, in a straight line, using a plurality of processing heads 5, respectively. The machining heads 5A to 5E, the machining head stand 6, the cross table 7, and the turning device 8 are simultaneously numerically controlled in order to carry out machining operations on the respective machining sections 9A to 9E.

Note that the processing head stand 6 and the cross stand 7 constitute a work head support stand, and therefore the work head support stand can move relative to the fixed stand 2 in the X-axis and Y-axis directions. It is.

The fixing bases 2 for the glass plate 1 of the table 4 are provided at five locations at substantially equal intervals as shown in FIGS. Fixed. For example, these fixing stands 2 have a suction structure that fixes the glass plate 1 by suction. The suction structure is configured to fix the glass plate 1 by being connected to a vacuum pump or the like and supplying and discharging air.

For example, as shown in FIGS. 1 and 2, the feeding device 3 for the glass plate 1 mounted on the table 4 is configured to horizontally move two belt conveyor devices 10 at appropriate intervals parallel to each other. It has a structure attached to. Each of the belt conveyor devices 10 is
The respective belts 11, 11 are configured to run in synchronization with each other at the same speed.

In other words, the belt conveyor device 10 has a belt 11
For example, toothed belts are used as belts 11, drive pulleys 12, 12 for driving these belts 11 are integrally connected to each other, and a motor 16 that is automatically numerically controlled drives the glass plate 1. The drive pulleys 12 are rotated to move the belt 11 a precise distance each time it is necessary to convey the belt.

Further, the belt conveyor devices 10, 10 are located across a series of fixed stands 2 arranged in a straight line, and are arranged parallel to each other on both sides of the fixed stands 2. The belt conveyor devices 10, 10 on both the left and right sides are integrally connected to each other, and are raised and lowered integrally by a lifting device 13, which will be described later.
configured to descend.

The belt 11 is configured to slide on a flat track surface formed on the upper surface of the conveyor frame 14. In the figure, 15 is a guide for moving the belt 11 straight.

Each lifting device 13 includes a nut 17 attached to the conveyor frame 14, a threaded rod 18 screwed into this nut 17, a bearing block 19 that supports this threaded rod 18, and this bearing block 19.
A gear device 21 that transmits power to the threaded rod 18, a shaft 22 that drives the gear device 21, and a motor 23 that drives the shaft 22.

Each lifting device 13 is connected by a shaft 22 so as to be integrally interlocked, and the conveyor device 10 of the feeding device 3 for the glass plate 1 is raised and lowered by rotation of the motor 23 in both forward and reverse directions. Of course, the upward limit and downward limit of the conveyor device 10 are respectively set by limit switches. Also glass plate 1
The belts 11, 11 that transport the
This motor 16 is generally controlled by a numerical control system configured to use a control axis (fourth axis) of a numerical control device. That is, a numerically controlled servo motor using one of the control axes of the numerical control device is used.

The work head support base has a cross base 7 and a processing head base 6, and the work head base 6 is held by the cross base 7 via a slide device 26, and is parallel to the extension direction of the cross base 7. It is configured to move directly.

That is, the slide table 27 is attached to the front surface of the cross table 7 in FIG. 6 moves in a straight line. Each machining head 5 has a turning device 8
It is attached to a machining head stand 6 via each one, and is held by this machining head stand 6 so as to be horizontally rotatable.

As shown in FIG. 4, each processing head 5 has a main body 30 having a fastening portion 71 fixed to the lower end of a rotary shaft 29 having one axis of a rotatable turning device 8, The lower end of this main body 30 slidably supports a slide device 31. That is, one side 74 of the slide device 31
A dovetail groove 75 is provided on the outside of the main body 30, and the dovetail groove 75 is engaged with a dovetail-shaped protrusion 76 that is complementary to the shape of the dovetail groove 75 provided at the lower end of the main body 30, and a knob 77 having a screw mechanism is rotated. Accordingly, the slide device 31 is formed to move forward and backward relative to the main body 30 along a direction perpendicular to the plane of FIG. 4. A drumstick-shaped protrusion (not shown) similar to the protrusion 76 is provided inside the other side 78 of the slide device 31 . A groove (not shown) having a shape similar to the dovetail groove 75 and complementary to this protrusion is provided in the slide device 32,
It is engaged with the protrusion provided on the side portion 78. The slide device 32 is provided with a knob 82 having a screw mechanism like the slide device 31, and by rotating this knob 82, the side portion 7
8, that is, the slide device 32 is configured to move forward and backward relative to the slide device 31 along a direction 70 orthogonal to the vertical direction. Furthermore, the slide device 32 has the same configuration as described above.
a motor base to which a processing motor 33 is attached;
That is, a vertical slide mechanism (not shown) is provided that allows the support plate 83 to move forward and backward in the vertical direction 69 with respect to the slide device 32. This plate 83 is provided with a tilt adjustment mechanism 68 for adjusting the tilt of the motor 33 with respect to the direction 69. Note that the slide device 31 and the slide device 32 constitute a moving device.

That is, the processing head 5 includes a main body 30 attached to the rotating shaft 29 of the turning device 8, and two slide devices 31 attached to the main body 30 and capable of sliding movement in two orthogonal directions.
and 32, attached to the slide device 32,
A machining motor 33 having another axial center disposed non-coaxially with the one axial center, and a rotating shaft of the machining motor 33 having the axial center of the machining motor 33 as a rotation center axis. and a machining wheel 34 as a working tool mounted so as to rotate around the rotation axis. The axis of the rotating shaft of the processing motor 33 is non-coaxial with the C-axis (FIG. 1), which is arranged parallel to the Z-axis perpendicular to the X-axis and the Y-axis, and 34 glass plates 1
It is arranged along the direction passing through point P, which serves as a working part for. Two of the above slide devices 3
One of the slide devices 1 and 32 is slidably attached to the main body 30, and the other slide device is attached to the one slide device.
As described above, the processing wheel 34 can be moved relatively toward and away from the fixed base 2 by these slide devices 31 and 32.

The rotating shaft 29 has a bevel gear device 35.
It is connected via a shaft 36 to a numerically controlled motor 37 as a drive device. This motor 3
7 is attached to the processing head stand 6.

The processing head stand 6 is connected to a numerically controlled motor 40 (cross stand 7) as a drive device via a ball screw 39.
attached to).

The cross stand 7 is connected to the machine stand 4 via a slide device 41.
2, and is connected to a numerically controlled motor 47 as a drive device via a ball screw device 43, a bevel gear 44, a shaft 45, and a timing transmission device, eg, a timing belt 46.

A plurality of machining heads 5, for example, five machining heads 5, are installed on the machining head stand 6, and these machining heads 5
A bevel cutting head 5A, an etching head 5B, a smoothing head 5C, and two polishing heads 5D and 5E are arranged in a row in the order of process to carry out machining operations in the machining sections 9A to 9E, respectively.

The bevel cutting head 5A is for chamfer cutting, and is constructed so that a cup-type diamond wheel serving as an operator covers the glass plate 1 and performs bevel cutting in an inclined position.

The etching head 5B is simply for cutting or grinding (also referred to as edge sanding) an edge (end face), and is equipped with a flat diamond wheel as a worker.

The smoothing head 5C is for grinding (also referred to as smoothing or apressing) the bevel surface of the glass plate 1 that has been bevel cut by the bevel cutting head 5A, and is a grinding wheel such as a cup type grindstone as a working tool. covers the glass plate 1 and is configured to perform smoothing or stressing in an inclined position.

The polishing heads 5D and 5E are for polishing the surface of the glass plate 1 after various types of grinding or cutting, and are used to cover the glass plate 1 with a cup-type felt wheel as a working tool. , and is configured to perform polishing in a tilted position.

As shown in FIG. 3, the rotating device 8 includes a housing body 67, a rotating shaft 29 inserted into the housing body 67, and a rotating shaft 29 that connects the rotating shaft 29 to the housing body 6.
7 and a plurality of bearings (not shown) that are rotatably held in a horizontal plane.
The housing body 67 is mounted on the head stand 6.

Bevel cutting head 5A, smoothing head 5
The rotating devices 8 of C and the two polishing heads 5D and 5E respectively have the Z-axis orthogonal to the linear control axes X and Y as the axis of rotation (C-axis). In order to numerically control these turning devices 8 all at once, each turning shaft 29 having an axis of rotation (C axis) is connected to a servo motor at the upper part via transmission means such as a bevel gear 35 and a shaft 36. 37
(for C-axis control).

C which is the axis of rotation of each of the above-mentioned turning devices 8
The direction of extension of each of the axes, i.e. the center of rotation, is the third
8 and 8, the processing wheel 34 is arranged so as to pass through the bevel cutting point P, the bevel grinding point P, and the polishing point P on the glass plate 1, which is being processed by the processing wheel 34, respectively. ing. Therefore, each processing wheel 34
are these bevel cutting points P, bevel grinding points P, and polishing polishing points P where the chamfering operation is in progress.
The machining wheels 34 rotate horizontally under numerical control according to changes in the shape of the edge of the glass plate 1, and each machining wheel 34 always maintains the same chamfer angle regardless of changes in the shape of the edge of the glass plate 1. , can be cut, ground and polished.

FIG. 8 shows a state in which the glass plate 1 is being chamfered by a numerically controlled glass plate processing machine. This FIG. 8 will be explained. The processing wheel 34 covers the edge portion of the glass plate 1 to be chamfered at a predetermined angle and chamfer width.
The processing head 5 is arranged in the X-axis direction and in the Y direction perpendicular to the X-axis.
Controlled to move relative to the glass sheet 1 in each axial direction, the working wheel 34 can follow along the edge of the glass sheet 1 . Moreover, the processing wheel 34 performs a numerically controlled turning movement by the rotary shaft 29 of the turning device 8, and can turn around point P, which is the point at the chamfered portion, so that the processing wheel 34 can rotate the glass plate 1, which changes in a complicated manner. Processing wheel 3 regardless of edge shape
4 can maintain the same chamfering angle and can perform continuous chamfering. For this reason, even the glass plate 1 whose edges are deformed in various shapes can be chamfered continuously and smoothly.

For example, in the case of a glass plate 1 having a 90° corner shape as shown in FIG. 8, the processing wheel 34 continuously moves horizontally by turning 90° around point P at the chamfered portion while keeping the chamfering angle constant. go.
That is, each wheel 34 is numerically controlled around point P of the chamfered portion according to the shape of the edge of the glass plate 1, and is configured to perform cutting, grinding, and polishing while spinning.

As a method for numerically controlling the swing device 8, for example, a program using linear-circular combined interpolation, which is a combination of linear interpolation and circular interpolation, may be used.

That is, the program may be configured to perform circular interpolation on the X and Y planes and numerically control the rotation angle of the C-axis in proportion to the rotation angle of the circular arc.

Next, the processing state of the glass plate 1 by the numerically controlled glass plate processing machine according to the present invention will be explained. In the chamfering process, first, the conveyor device 10 is raised to move the glass plate 1 to the first processing section 9A, and then the conveyor device 10 is lowered and the glass plate 1 is placed on the fixing table 2. Next, by operating a vacuum pump or the like, the glass plate 1 is fixed to the fixing table 2 by suction. Next, the numerical control device is operated to cause all of the machining sections 9A to 9E to perform machining operations under numerical control. At this time, machining work is performed only in the first machining section 9A.

When one cycle of processing work is completed, the conveyor device 10 rises and at the same time the glass plate 1 is separated from the fixed table 2, and the glass plate 1 is sent to the next processing section 9B. Following the same movement, move the machining heads 5A, 5
The respective machining operations are sequentially performed in the machining sections 9A to 9E corresponding to the respective machining heads in the order of B, 5C, 5D, and 5E.

Therefore, the numerically controlled glass plate processing machine of this embodiment includes a fixed table 2 as a table for holding the glass plate 1 to be processed, an X-axis direction as a first direction, and a direction perpendicular to the X-axis direction. A work head support stand constituted by a processing head stand 6 and a cross stand 7, which are movable relative to the fixed stand 2 along the Y-axis direction as a second direction, and this work head support stand. A motor 40 and a motor 47 are provided between the work head support base and the fixed base 2 to cause the fixed base 2 to move relative to the work head in the first and second directions, respectively. a third drive device perpendicular to the first and second directions;
A machining head 5 as a work head supported by the work head support base so as to rotate around a C axis as a first axis extending parallel to the Z axis direction in the direction of A machining wheel 34 serving as a worker is arranged and attached to the machining head 5, and a machining wheel 34 serving as a worker is mounted on the machining head 5 to rotate the machining head 5 about the C axis.
A motor 37 as a second drive connected to
In order to numerically control the relative movement of the processing head 6 and the cross table 7 with respect to the fixed table 2 by the first drive device and the rotation of the processing head 5 by the motor 37, the first drive device and the second drive device are used. a numerical control device respectively connected to a drive device, and the first axis is along a fourth direction in which the second axis passes through a point P as a working part of the processing wheel 34. are arranged non-coaxially,
The processing head 5 is movable in two orthogonal directions, and includes a slide device 31 and a slide device 32.
The work head is attached to the work head support via a moving device consisting of.

According to the above-mentioned embodiment, in each of the above steps, the processing devices for performing the work in the step are sequentially arranged in a straight line, and the glass plate is linearly conveyed to each of these processing devices in sequence. Therefore, it is possible to provide a numerically controlled processing machine for glass plates that can perform speedy automatic processing work for the glass position.

Furthermore, according to the above-mentioned embodiment, the glass plate is sent to each processing section, each processing operation (processing by numerical control) is performed, and the glass plate is finished sequentially. For this reason,
It is efficient because the glass plates are sent one after another in a straight line to each processing section by a conveyor device, where they are processed and finished. In addition, multiple machining heads are mechanically connected as one unit, allowing for simultaneous machining while maintaining the same chamfer angle.The movement can be automated with a single numerical control device, making it efficient. .

From the above, in the numerically controlled processing machine for glass plates according to the present invention, even if a plurality of processing heads are mechanically connected integrally as in the above-mentioned embodiment, each processing head can be controlled by one numerical control device. , is efficient and can simplify the control program. In addition, when performing processing work on a glass plate, the work tool is rotated by a drive device to rotate the work head around the first axis (C axis) with respect to the work area where the processing work is performed on the glass plate. to rotate through
The work tool can always be kept in the same position,
In other words, the contact pressure for working the work tool on the glass plate can be maintained constant, and stable machining work can be performed without unevenness. In addition, even if the working tool is worn out and there is a contact state of the working tool with the glass plate, that is, a gap or the like is generated between the working tool and the glass plate, the working tool can be moved to the initial predetermined contact position by the moving device. can be adjusted to
To consistently perform desired glass plate processing work without changing the program of a numerical control device at all.

[Brief explanation of the drawing]

1 is a front view of the apparatus according to the invention, FIG. 2 is a plan view of the apparatus in FIG. 1, FIG. 3 is a plan view of the processing head, FIG. 4 is a side view of the processing head, and FIG.
7 to 7 are explanatory views of the glass plate feeding device, and FIG. 8 is an explanatory view of the turning operation of the turning device. 2... Fixed stand, 3... Feeding device, 4... Table, 5
...Processing head.

Claims (1)

[Claims] 1. A plurality of fixed stands for holding glass plates to be processed, and a work head support movable relative to the fixed stands in a first direction and a second direction perpendicular to the first direction. a first drive device provided between the work head support base and the fixed base for moving the work head support base relative to the fixed base;
The first direction extends parallel to the third direction orthogonal to the direction of
a plurality of machining heads supported by the work head support base so as to rotate around the axis of the work head; a work tool disposed on the second axis and attached to each of the machining heads; a second drive device connected to each of the machining heads to perform the rotation; and a second drive device connected to each of the processing heads to perform the rotation, and a second drive device that moves the work head support base relative to each of the fixed bases by the first drive device and the second drive device. a numerical control device connected to the first drive device and the second drive device to numerically control the rotation of each of the machining heads by the drive device, the second axis being
The machining head passes through the working part of the work tool and is non-coaxial with the first axis, and the machining head moves the work tool into two directions that are perpendicular to the first axis and mutually orthogonal, respectively. A numerically controlled processing machine for glass plates, which has a moving device that can be moved in a direction.