JPH022666B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a numerically controlled processing of glass plates that processes glass plates of various shapes such as circular, oval, rectangular, and various other curves while controlling the operation of the machine using numerical commands. Regarding machines.

In general, the work processes for processing glass plates include an edge polishing process (edge cutting or edge grinding), a chamfer cutting process (bevel cut with a diamond wheel), and a chamfer grinding process to grind the chamfered surface. (smoothing with a grindstone, etc.), a polishing process to polish the chamfered and ground surface, a scoring process for cutting the glass plate (using a cutting wheel), a breaking process to break the streaked glass plate, etc. There is each work process.

However, in each of these work processes, it is necessary to provide mechanical coordinate axes for each work tool attached to the work head so that it runs along the contour of the glass plate, and to move each of these axes through numerical control. be.

By the way, in order to control all of the above-mentioned work processes, a large number of control axes are required, and a large number of numerical control devices each having one numerical control program are required. Therefore, in order to control all the control axes separately, it is necessary to perform multiple highly advanced numerical controls, and the numerical control programs recorded on control tapes etc. also become complex, so it is necessary to create the numerical control programs. becomes difficult to do.

Therefore, an object of the present invention is to mechanically connect a group of axes that control the work of each of the above-mentioned work processes and require complex control, and to control each work process using a numerical control device equipped with one numerical control program. It is an object of the present invention to provide a numerically controlled glass plate processing machine configured to numerically control the working movements of the glass plate at the same time.

According to the present invention, the object is to provide a plurality of fixing tables for holding glass sheets to be processed, and a plurality of fixing tables relative to the fixing tables in a first direction and a second direction orthogonal to the first direction. a first drive device provided between the work head support and the fixed base for moving the work head support relative to the fixed base; , a plurality of work heads supported by the work head support base so as to rotate about a first axis extending parallel to a third direction perpendicular to the first and second directions; a work tool disposed on a second axis in a plane including the axis of the work head and attached to each of the work heads; one mechanically coupled second drive; relative movement of the work head support with respect to each of the fixed bases by the first drive; and rotation of each of the work heads by the second drive; a numerical control device connected to the first drive device and the second drive device to numerically control the power tool, and the first axis passes through the working part of the power tool. , non-coaxial with the second axis, and the working head is oriented in a direction in another plane including the first and second directions, and the work head This is achieved by a numerically controlled glass plate processing machine having fine adjustment means capable of adjusting movement in the normal direction of the processed part of the glass plate with which the parts come into contact, and in the third direction. .

Furthermore, another object of the present invention is to arrange the apparatuses for performing each of the above-mentioned work processes in a line in the order of the process to be performed, and to sequentially feed the glass plate to each apparatus for each of these work processes along the line. The objective is to provide a numerically controlled processing machine for glass plates that can be processed quickly and automatically.

An embodiment of the present invention will be described below with reference to the drawings. The glass plate numerically controlled processing machine according to the present embodiment has a plurality of fixing tables 2 arranged in a straight line for holding the glass plate 1 fixedly set horizontally, and a plurality of fixing tables 2 are arranged in a straight line so as to pass through these fixing tables 2. A table 4 equipped with a feeding device 3 for a glass plate 1 placed in
A plurality of processing heads 5 constituting a plurality of work heads are similarly arranged in a straight line, and are numerically controlled in one direction along the fixed base 2 arranged in a straight line (left and right in Fig. 1). (X-axis direction)
A machining head stand 6 that is movable in a direction, a machining head stand 6 that is movable, and a machining head stand 6 that is movable in the other direction (Y axis direction) that is perpendicular to the first direction (the A cross base 7 movable along the X-axis direction and a machining head base 6 are attached, and the necessary number of machining heads 5 are simultaneously numerically controlled in a plane including the X-axis direction and the Y-axis direction. A processing section 9, which is a device for performing each of the above-mentioned work steps, is constituted by a turning device 8 for horizontal turning.
It is equipped with The numerically controlled glass plate processing machine of this embodiment is constructed so that a plurality of these processing heads 5 are arranged in a straight line and these plurality of various processing heads 5 are numerically controlled simultaneously. Note that the processing head stand 6 and the cross stand 7 constitute a work head support stand.

Further, the fixing bases 2 for the glass plate 1 arranged on the table 4 are provided at five equal intervals as shown in FIGS. 1 and 2, for example, and the glass plate 1 is mounted on each fixing base 2. Fixed and held horizontally.
For example, these fixing stands 2 have a suction structure that can fix the glass plate 1 by suction. This adsorption structure has a structure in which air is supplied and discharged by being connected to a vacuum pump or the like.

The feeding device 3 for the glass plate 1 installed on the table 4 is, for example, as shown in FIGS. 1 and 2, in which two belts 11 are arranged horizontally and parallel to each other at an appropriate interval. It has a belt conveyor device 10 having a structure such that each belt 1
1 and 11 are configured to run at the same speed in synchronization with each other.

More specifically, the feeding device 3 includes belts 11,
For example, a toothed belt is used as 11,
and a drive pulley 1 for driving each belt 11
2 and 12, and these drive pulleys 1
2 and 12 are integrally connected to each other, and the automatic control motor 1 is connected to the automatic control motor 1 via drive pulleys 12 and 12, respectively.
6, each belt 11 is moved by a precise fixed distance each time a glass plate 1 needs to be transported.

Further, the belts 11, 11 of the belt conveyor devices 10, 10 are arranged so as to sandwich the fixing tables 2 arranged in a straight line, that is, on both sides of the fixing tables 2, so as to be parallel to each other. The belt conveyor device 10 has a structure in which both belts 11, 11 are connected and integrated, and can be raised and lowered by a lifting device 13, which will be described later.

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 the nut 17, a bearing block 19 that supports the threaded rod 18, and a support 20 (machine base 42) that supports the bearing block 19. (erected from the bottom of the
A gear device 21 that transmits power to the threaded rod 18, a shaft 22 that drives the gear device 21, and a shaft 2
A motor 23 that drives the motor 2 is provided.

Each lifting device 13 is connected to the shaft 22 so that each lifting device 13 is integrally interlocked by driving the shaft 22, and the belt of the feeding device 3 connected to each lifting device 13 is connected to each lifting device 13 by forward and reverse rotation of the motor. The conveyor device 10 moves up and down. of course,
The upper limit position and lower limit position of the belt conveyor device 10 are set by a limit switch (not shown). In addition, the belt 1 that sends the glass plate 1
1 and 11 are moved accurately by a predetermined distance by a dynamic control motor 16, but the automatic control motor 16 generally uses one control axis (fourth axis) of a numerical control device (not shown). It is configured to be numerically controlled. That is, as the automatic control motor 16, a numerically controlled servo motor that is controlled using one axis of a numerically controlled device is used.

The processing head table 6 is held by the cross table 7 via a slide device 26, and is configured to move linearly parallel to the cross table 7.

That is, a slide table 27 is attached to the front side of the cross table 7, that is, the lower side wall surface in FIG. 2, and a slide 28 is attached to the processing head table 6. The processing head stand 6 is moved linearly in the X-axis direction while being held by the slide stand 27. That is, the processing head 5 attached to the processing head stand 6 can move in the X-axis direction,
Furthermore, each machining head 5 is attached to the machining head stand 6 via the rotation device 8, so that the machining head stand 6
It is possible to horizontally turn, that is, rotate freely while being held in the same position.

The processing head 5 has an arm member, that is, a main body 30, attached to a rotary shaft 29 having one axis, which is the center of rotation of the turning device 8, and a plane including the X-axis and the Y-axis. Two slide devices 31 and 32 constituting fine adjustment means that can slide in two directions perpendicular to each other, and another axis located in a plane including the first axis attached to one slide device. The machining motor 33 has a working shaft 62 equipped with a working shaft 62, and a working wheel 34, which is a specific example of a working tool, is attached to the working shaft 62 of the working motor 33. In FIG. 4, the slide device 32 moves in the direction toward the processing portion P, which is the portion of the glass plate 1 that the working portion W of the processing wheel 34 comes into contact with, in the one plane, that is, in the normal direction of the processing portion P. Regarding machining wheel 3
4 can be moved. One of the two slide devices 31 and 32 is slidably attached to the main body 30, and the other slide device is attached to the one slide device. In this embodiment, the main body 3
A slide device 31 is attached to the slide device 0, a slide device 32 is attached to the slide device 31, and a processing motor 33 is attached to the slide device 32.

The slide device 32 to which the processing motor 33 is attached is a movable slide (not shown) that can move in the vertical direction in FIG. ), and further includes a motor base 60 that can be rotated freely around a horizontal axis 61 extending in the horizontal direction. These slide devices 32
The movable slide constitutes a fine adjustment means. Each rotating shaft 29 is connected to a numerically controlled motor 37 via a bevel gear device 35 and a shaft 36 . This numerically controlled motor 37 is mounted on the processing head stand 6. These bevel gear device 35, shaft 36, and numerically controlled motor 37 each constitute one drive device.

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

The cross stand 7 is attached to a machine stand 42 via a slide device 41, and is further attached to a ball screw device 4.
3. Numerical control motor 47 via bevel gear 44, shaft 45 and timing transmission 46, respectively.
is connected to. These ball screw devices 39
and numerically controlled motor 40 and ball screw device 4
3, a bevel gear 44, a shaft 45, a timing transmission 46 and a numerically controlled motor 47 constitute another drive device.

A plurality of machining heads 5, for example, five machining heads 5, are mounted on the machining head stand 6, and are arranged in a row in the order of the work process: a bevel cutting head 5A, an etching head 5B, a smoothing head 5C, a polishing head 5D, and then a smoothing head 5C. ing. These heads are collectively referred to as processing heads 5.

The bevel cutting head 5A is in charge of chamfer cutting, and a cup-type diamond wheel, which is an example of a power tool, covers the glass plate 1 and performs bevel cutting in an inclined position.

The etching head 5B is in charge of cutting or grinding (also called edge finishing) the edge (end face) of the glass plate 1, and performs cylindrical cutting and grinding using a flat diamond wheel, which is another example of a working tool.

The smoothing head 5C is in charge of grinding (also referred to as smoothing or apressing) a bevel-cut surface, and a grinding wheel such as a cup-type grindstone, which is yet another example of a power tool, covers the glass plate 1, and Bevel grinding in a tilted position.

Further, the polishing head 5D is responsible for polishing the surface after smoothing, and the cup-type felt wheel, which is yet another specific example of the power tool, is placed over the glass plate 1 and in an inclined position. Perform politshing with.

As shown in FIG. 1, the turning device 8 includes a housing body, a rotating shaft 29 inserted into the housing body and having an axis that is the center of rotation, and a rotating shaft 29 that is inserted into the housing body. It consists of an assembled body with a plurality of bearings (not shown) that are held so as to be horizontally rotatable. The housing body is mounted on the head stand 6.

Bevel cutting head 5A, smoothing head 5
Each turning device 8 of the C and polishing head 5D uses the Z axis, which is arranged in a direction perpendicular to the X-axis direction and the Y-axis direction, which are linear control axes, as the center of rotation (C-axis). ing. In order to numerically control these turning devices 8 all at once, each rotating shaft 29 having its own axis is connected to one servo motor 37 (for C-axis control) at the upper part via transmission means such as a bevel gear 35 and a shaft 36. ) are collectively mechanically connected.

The respective extension directions of the axes (C-axes, i.e., turning center lines) of each of the above-mentioned turning devices 8 are shown in FIGS. 3 and 4.
As shown in the figure, the bevel cutting point of the glass plate 1 that is currently being etched by the processing wheel 34, which is an example of a working tool,
It passes through a processing section P which is a bevel grinding point and a polishing point. Therefore, each machining wheel 34 is numerically controlled to horizontally turn around the machining section P, which is the currently underway bevel cutting point, bevel grinding point, and polishing point, in accordance with the shape change of the glass edge. Although the shape of the edge 1 changes, each processing wheel 34 is configured to perform cutting, grinding, and polishing while always keeping the same chamfer angle for cutting and grinding. That is, each machining wheel 34 is connected to the machining wheel 3 as necessary.
Cutting, grinding, and polishing are carried out by numerically controlled spinning and turning around the cutting, grinding, and polishing section (working section 4).

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

That is, the numerical control program may be configured to perform circular interpolation on the XY plane and control the rotation angle of the turn about 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. To perform the chamfering process, first, the glass plate 1 is raised onto the belt conveyor device 10 and set in the first processing section 9 at the right end in FIG. 1, and then the belt conveyor device 10 is lowered and the vacuum pump etc. Then, the glass plate 1 is held on the fixing table 2 by suction and fixation. Next, each of the above-mentioned operations is performed by the numerical control device to numerically control each of the processing sections 9. At this time, machining work is performed only in the first machining section 9.

When one cycle of processing work is completed, the belt conveyor device 10 rises again, 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 9. From then on, the same movements are performed and different machining operations are performed one after another.

The glass plate 1 is sent to each processing section 9, subjected to respective processing operations (numerically controlled processing), and finished. Therefore, the glass plates 1 are sent one after another in a straight line to the processing section 9 by the belt conveyor device 10, and are finished by being sequentially subjected to different processing operations, which is efficient. Further, since the plurality of machining heads 5 are mechanically connected and configured to move simultaneously, each machining operation can be performed under the same numerical control, resulting in efficiency.

That is, the numerically controlled glass plate processing machine of this embodiment includes a plurality of fixing tables 2 for holding glass plates 1 to be processed, a first direction along the X-axis, and a direction perpendicular to the first direction. a working head support stand constituted by a processing head stand 6 and a cross stand 7 that are movable relative to the fixed stand 2 in a second direction along the Y axis, and the work head support stand relative to the fixed stand 2; A ball screw device 39, a numerically controlled motor 40, a ball screw device 43, a bevel gear 44, a shaft 45, a timing transmission device 46, and a ball screw device 43, a bevel gear 44, a shaft 45, a timing transmission device and Rotation comprising a first drive device constituted by a numerically controlled motor 47 and a first axis extending parallel to a third direction along the C-axis orthogonal to the first and second directions. A machining machine comprising a plurality of machining heads 5 supported on the work head support base so as to rotate around a shaft 29, and a second axis lying within a plane including the first axis. Working shaft 6 of motor 33
a machining wheel 34 disposed on the machining head 2 and attached to each of the machining heads 5; a bevel gear device 35 and a shaft 36 mechanically connected to each of the machining heads 5 in order to effect said turning of the machining heads 5; and one second drive device constituted by a numerically controlled motor 37, the relative movement of the work head support base with respect to each of the fixed bases 2 by the first drive device, and the processing head by the second drive device. 5. In order to numerically control the turning of each
and one numerical control device connected to the second drive device, and the first axis, that is, the axis of the rotary shaft 29 passes through the working part W of the processing wheel 34. However, it is not coaxial with the axis of the machining motor 33, and the machining head 5 is in a direction in which the machining wheel 34 is located in another plane including the first and second directions.
The slide device 32 is configured by a slide device 32 that can be moved in the normal direction of the processing portion P of the glass plate 1 with which the working portion W contacts and the third direction, and the slide that is movable in the vertical direction. It has fine adjustment means.

As described above, since the numerically controlled processing machine for glass plates of this embodiment has the above-described configuration, a plurality of processing heads 5 are simultaneously controlled by one numerical control program to continuously process a series of glass plates 1. Even if the relative position of the processing wheel 34 attached to each processing head 5 with respect to the glass plate 1 to be processed changes individually depending on the working conditions, for example, due to wear, the relative position becomes uneven. By the fine adjustment means, each of the processing wheels 34 can be moved in the normal direction and the third direction, ie, the vertical direction, to be repositioned to the initial predetermined position. By moving each processing wheel 34 in the linear direction and vertical direction, and in the normal direction in the case of etching work, the relative positions of the different processing wheels 34 can be reset to the optimum position. The processing of the glass plate 1 can be continuously and repeatedly performed while maintaining the same relative position conditions without modifying the numerical control program each time.

From the above, the glass plate numerically controlled processing machine of the present invention controls the work head using numerical data to process the glass plate to be processed, and assumes that the work tool attached to the work head is worn out. The fine adjustment means adjusts the movement of the work tool in the normal direction in the plane including the first and second directions, and in the third direction. may be placed in an initial predetermined position.

To explain in more detail, when performing the above-mentioned movement adjustment on a work tool for beveling work, the working part of the work tool that contacts the glass plate, that is, the beveling work surface, is moved in the normal direction and the By moving the beveling work surface in each of the three directions, the beveling work surface can be positioned at a certain distance from the rotation center of the power tool. A predetermined period of time in which the relative rotational circumferential speed of the beveling work surface can be maintained constant, and the work tool follows a certain program while maintaining the predetermined relative rotational circumferential speed on the beveling work surface. In order to make contact with the glass plate, it is possible to maintain the glass plate in a state substantially equal to the initial working conditions, and a stable and even processing operation can always be carried out. In addition, when performing the above-mentioned movement adjustment for wear on a work tool for performing etching work, that is, a work tool in the shape of an etching wheel, the edge part, which is the working part of the work tool, is moved in the normal direction. By moving the tool, the edge can be brought into contact with the edge of the glass plate to be processed, that is, the power tool can be positioned at an initial predetermined position.

From the above, the numerically controlled processing machine for glass plates of the present invention can process glass plates while maintaining the same working conditions without frequently modifying the numerical control program.

[Brief explanation of drawings]

Fig. 1 is a front view of a numerically controlled glass plate processing machine of the present invention, Fig. 2 is a plan view of the numerically controlled glass plate processing machine of the present invention, Fig. 3 is a plan view of the work head, and Fig. 4 is a The side view of the work head and FIGS. 5 to 7 are explanatory diagrams of the glass plate feeding device. 2...Fixing stand, 3...Glass plate feeding device, 4
...Table, 5...Machining head, 6...Processing head stand, 7...Cross stand, 8...Swivel device, 9...
...Processing department, 10... Belt conveyor device, 11...
...belt, 12...pulley, 13...lifting device.

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 work heads supported by the work head support base so as to rotate around the axis of the work head; and a plurality of work heads disposed on a second axis in a plane including the first axis, a working tool attached to each of the working heads; a second drive mechanically coupled to each of the working heads for effecting the pivoting of the working heads; 1 connected to the first drive device and the second drive device for numerically controlling the relative movement of the work head support with respect to each of the fixed bases and the rotation of each of the work heads by the second drive device; the first axis passes through the working part of the power tool and is non-coaxial with the second axis, and the working head a direction in which the tool is placed in another plane including the first and second directions, the normal direction of the processed portion of the glass plate with which the working portion of the working tool comes into contact, and the third direction A numerically controlled processing machine for glass plates, which has fine adjustment means that can be individually adjusted in movement.