JPH05294656A - Numerically controlled cutting machine for glass plate - Google Patents

Abstract

PURPOSE:To provide the subject cutting machine designed to enable high-speed, accurate small-diameter circular cutting, arc cutting and other curve cuttings by making up the movement of an operating head and the revolving of a cutting device and revolving device each fitted to the operating head so as to be capable of numerical control. CONSTITUTION:Two pairs of slide rail device 5 is fitted with the first translation table 6 so as to be movable in the Y-axis direction relatively to a table 1 holding a glass plate 4. And, a slide rail device 14 set in the front of the first translation table 6 is fitted with the second translation table 15 so as to be movable in the X axis direction. Also, this second translation table 15 is fitted with a cutter head 24 serving as an operating head. Besides, the cutter head 24 is fitted with a piston rod 26 serving as a revolving device so as to be controllable in the Z-axis direction and revolvably incorporated with a diamond cutter wheel 28 serving as a cutting device. And, using a numerical control unit capable of simultaneously controlling the X-, Yand Z-axes, the glass plate 4 is cut under controlling the cutter head 24, piston rod 26 and cutter wheel 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control cutting machine for moving a cutting device by numerical control to cut a glass sheet.

[0002]

2. Description of the Related Art Conventional cutting machines for performing circular cutting and irregular cutting generally have a cutting device mounted on a cutter head as a working head, such as a cutter wheel for moving the cutter head. It has an eccentric mounting structure that freely follows the direction according to the direction.

In a conventional cutter wheel free-direction copying system having such an eccentric mounting structure, the moving speed of the cutter wheel, that is, the cutting speed.
If the cutting speed is fast, the cutter wheel will come off from the desired cutting line due to the action of centrifugal force applied to the cutter wheel and the cutting pressure of the cutter wheel, etc. It has the drawback of being difficult to cut. Also,
The above-mentioned conventional cutter wheel has a drawback that it is difficult to smoothly follow the direction of the cutter wheel in circular cutting and circular arc cutting performed along a circular portion having a very small diameter. There is. In addition, there is the drawback of creating an offset in the actual cutting position due to the eccentric mounting structure of the cutter wheel.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to cut a circular portion, a circular arc portion or the like of a portion having a fast cutting speed or a large curvature. Even when performing the curve cutting of
It is an object of the present invention to provide a numerically controlled cutting machine capable of accurately cutting a glass plate without the cutting device deviating from a predetermined cutting line.

It is another object of the present invention to make circular cuts, arc cuts and other curved cuts and right-angled cuts of very small dimensions, and cross cuts of other free angles smooth and fast. The object is to provide a numerically controlled cutting machine for glass sheets that can be used for the following purposes.

[0006]

According to the invention, the object is to provide a holding device for holding a glass plate to be cut, and a first device which is parallel to the holding device and parallel to the plane of the glass plate.
And a relative movement of the work head support base in the second direction parallel to the surface of the glass plate orthogonal to the first direction and the holding device, and the relative movement of the work head support base with respect to the holding device. A drive device provided between the work head support and the holding device to cause the work head, a work head mounted on the work head support, and a cutter attached to the work head to cut the glass plate. A cutting device including a wheel, a turning device mounted on the working head so that the cutting device can be turned on one surface including the first direction and the second direction, and the working head A numerical controller connected to the drive unit and the rotary drive unit for numerically controlling the relative movement of the support base and the rotation of the cutting device, and a cutting pressure applied to the glass plate to the cutting device. In order A numerically controlled cutting machine for a glass plate, comprising: a pressing device provided on the working head, wherein an extension line of a rotation center of the rotation device substantially intersects with a rotation axis of the cutter wheel. To be achieved.

[0007]

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

The glass plate cutting machine of the present invention is connected with a numerical control device (not shown) capable of controlling three axes simultaneously, that is, the X axis, the Y axis and the Z axis.

That is, in the numerically controlled cutting machine according to the present invention, a glass plate 4 is fixed on a table 1 serving as a holding device, and two straight lines orthogonal to each other, that is, the X-axis direction and the Y-axis direction are straight lines. The cutter 24 as a working head is moved by a manual movement, and the cutter as a cutting device is provided by a control shaft arranged in the remaining Z-axis direction orthogonal to each of the X-axis direction and the Y-axis direction while moving the head 24. The wheel 28 is configured to always follow the shape of the cutting line. Now, on the table 1 for placing and holding the glass plate 4, the glass plate 4 is cut. The table 1 is horizontally mounted on a machine base 2. In addition, this
It is a matter of course that the bull 1 may be provided with an air-float device so that the glass plate 4 can be easily moved in and out.

Above the table 1, a frame 3 is erected by a machine base 2 via a support base. Two sets of slide rail devices 5 and 5 are arranged separately on the left and right sides of the pedestal 3 and are installed in parallel with each other.

These two sets of slide rail devices 5 and 5
The first linear motion table 6 is installed. This first linear motion table 6
Moves in the Y-axis direction with respect to the table 1, that is, moves.

The slide rail device 5 has a rail
Main body 7 and slide 8 for moving on the main rail 7
It is composed of and. The rail body 7 is fixed to the pedestal 3, and the first linear motion table 6 is attached to each of the left and right slides 8.

(1) Y-axis movement servo mechanism Between the two sets of slide rail devices 5 and 5, a feed screw device 9 is arranged along the slide rail devices 5 and 5. There is. A Y-axis servo motor 10 is connected to the feed screw device 9. The feed screw device 9 is composed of a ball screw 11 and a nut 12. Bow
The screw 11 is fixed to the pedestal 3 via the bearing 13, and the nut 12 is fixed to the first linear motion table 6. Of course, the Y-axis servo motor 10 is fixed to the pedestal 3, and is generally connected to the ball screw 11 via a gear or the like.

(2) Structure for X-axis movement On the front surface of the first linear motion table 6 which moves in the Y-axis direction, a slide rail is formed along the X-axis direction orthogonal to the Y-axis direction movement.
Device 14 is installed. Then, the second linear motion table 15 is attached to the slide rail device 14, and the second linear motion table 15 moves in the X-axis direction. That is, the second translation table 15 moves in the direction of the X axis which is orthogonal to the movement in the direction of the Y axis.

In the slide rail device 14, the rail body 16 is fixed to the first linear motion base 6, and the second linear motion base 15 is attached to the slide 17.

It should be noted that the above-mentioned mount 3, support stand, slide rail
With respect to the table 1 in the X-axis direction and the Y-axis direction orthogonal to the X-axis direction by the rail device 5, the first linear motion table 6, the slide rail device 14, and the second linear motion table 15, respectively. And a work head support base that is relatively movable.

(3) Servo mechanism for X-axis movement A feed screw device 18 is mounted along the slide rail device 14 on the front surface of the first linear motion table 6 in FIG. ing. The feed screw device 18 is composed of a ball screw 19 and a nut 20. The nut 20 is connected to the second translation base 15. Ball screw 19
Is fixed to the first linear motion table 6 via a bearing 21. This lead screw device 18 is especially designed for the ball screw 19
Is connected to the X-axis servo motor 22 at one end.

The feed screw device 9 and the Y-axis servo motor 1
0, the feed screw device 18, and the X-axis servo motor 22 constitute a drive device for performing the relative movement of the work head support base.

(4) Cutter Head As shown in FIGS. 1 and 3, the second linear motion table 15 is provided with a cutter head 24 as a working head. Although only one cutter head 24 is provided in this embodiment, a plurality of cutter heads 24 may be provided if necessary. The cutter head 24 is a cylinder device 25 as a pressing device that operates by fluid pressure such as air pressure and hydraulic pressure.
Is equipped with. As the cylinder device 25, a piston rod 26, which constitutes a control shaft arranged in the direction of the Z-axis and which is a part of the rotating device, is provided from the end portion in the vertical direction in FIG. ) Use both protruding rod recliners.

A cutter holder 27 is attached to the lower portion of the piston rod 26 in FIG. A diamond cutter wheel 28 as a cutting device is rotatably attached to the tip of the cutter holder 27. At the upper part of the cylinder device 25 in FIG. 3, there is provided a spline device 31 for rotating the piston rod 26 by being driven by a Z-axis servomotor 30 as a rotary drive device described later. ..

The spline device 31 includes a spline 32 directly connected to the piston rod 26 and a spline bearing 3.
3 and 3. This spline bearing 33
Are rotatably held in the housing body 35 by bearings 34 and 34. Furthermore, this housing body 3
5 is fixed to the cylinder device 25. A gear 36 is attached to the spline bearing 33.

The Z-axis servomotor 30 for driving the spline device 31 is fixed to the plate table 37 which constitutes the second linear motion table 15. A gear 38 is attached to the shaft of the servo motor 30. This gear 38
And the gear 36 of the splice 32 are meshed with each other.

The Z-axis servomotor 30 allows the gears 36, 3
The spline device 31 is rotated via 8, and the piston rod 26, the cutter holder 27, and the cutter wheel 28 are made into one horizontal plane including the directions of the X axis and the Y axis through the spline device 31. Rotate at. Therefore, as shown in FIG. 3, the extension line of the rotation center of the piston rod 26 substantially intersects with the rotation axis of the cutter wheel 28. The cutter wheel 28 horizontally rotates about the piston rod 26. This horizontal rotation is an operation of causing the cutter wheel 28 to follow the planned cutting line in the direction, and therefore, the horizontal rotation is within a range of ± 360 °.

Each of the spline device 31 and the piston rod 26 is attached to the working head so that the cutter wheel 28 can be rotated in a horizontal plane including the directions of the X axis and the Y axis. As shown in FIG. 3, the rotation center of the rotation device is arranged non-coaxially with the Z-axis servo motor 30 which constitutes the rotation drive device. Has been done.

(5) Operation of Cutter Head The cylinder device 25 is operated to lower the piston rod 26 toward the glass plate 4 and apply a cutting pressure to the cutter wheel 28. In this state, the cutter head 24 is moved to cut the glass plate 4. The cutting is performed while steering the piston rod 26 as necessary to rotate the piston rod 26 according to the shape of the line to be cut.

Next, at the same time when the cutting is completed, the piston rod 2
6 is raised. When the piston rod 26 is raised, the cutter wheel 28 is also rotated so that the posture of the required angle is maintained.

From the above, the numerically controlled cutting machine for the glass plate 4 according to this embodiment has a table 1 for holding the glass plate 4 to be cut, an X-axis direction with respect to the table 1 and A gantry 3, a column base, a slide rail device 5, a first linear motion table 6, a slide rail device 14, and a second linear motion that are relatively movable in the Y-axis direction orthogonal to the X-axis direction. A work head support base constituted by a base 15 and provided between the work head support base and the table 1 for moving the work head support base relative to the table 1. A drive device including a feed screw device 9, a Y-axis servo motor 10, a feed screw device 18, and an X-axis servo motor 22, and a cutter as a work head mounted on the work head support base. A cutter for cutting the head 24 and the glass plate 4. A cutter wheel 28 attached to the head 24, and a cutter wheel 28 attached to the cutter head 24 so that the cutter wheel 28 can be rotated on one surface including the X-axis direction and the Y-axis direction. Further, a rotating device constituted by the spline device 31 and the piston rod 26, and a Z-axis servomotor arranged non-coaxially with the rotation center of the rotating device to drive the rotation of the rotating device. -Ta 30
And a numerical control device connected to the Z-axis servo motor 30 which is the driving device and the rotational driving device for numerically controlling the relative movement of the work head support and the rotational movement of the cutter wheel 28. (Not shown) and cutter wheel 28
Is provided with a cylinder device 25 provided between a cutter head 24 and a cutter wheel 28 to apply a cutting pressure to the glass plate 4, and the piston rod 2
An extension line of the rotation center of 6 substantially intersects with the rotation axis of the cutter wheel 28.

The cylinder device 25 preferably has a special structure that withstands the rotational movement of the piston rod 26, that is, a structure in which the seal portion is not easily worn.

[0029]

The numerically controlled cutting machine for glass plates according to the present embodiment is constructed such that the first translation table 6 moves in the Y-axis direction and the second translation table 1 moves.
The cutter head 24, which moves along the planned cutting line by the movement of the X-axis direction of 5, moves by the numerical control which is the movement about the Z-axis to forcibly move the cutter wheel 28 to the above-mentioned schedule. The cutting line can be made to follow the direction. Therefore,
The direction of the cutter wheel 28 according to the traveling direction for cutting is always reliably and accurately performed. For this reason, even if various kinds of forces act on the cutter wheel 28 at the time of fast speed circular cutting, circular arc cutting, and other curved cutting, it is possible to accurately follow the direction and perform accurate dimension cutting.

Further, even in the case of circular cutting, arc cutting or curved cutting having a very small diameter, the cutter wheel 28 can follow the direction of the smooth, and good cutting can be performed.

It is particularly suitable for high-speed, small-diameter circular cutting.

Further, the numerical control cutting machine for glass plates of the present invention cuts the glass plate in the work for cutting the glass plate by moving the work head while controlling it by the numerical data from the numerical control device. Device contact pressure,
That is, the cutting pressure can be made to correspond to the optimum value in the cutting work by the pressing device. In other words, it is possible to stably carry out a desired cutting work along the cutting line, that is, a cutting work without unevenness.

In addition, the extension line of the rotation center of the rotation device substantially intersects the rotation axis of the cutter wheel,
Since the eccentric mounting structure is not used, the feed pulse of the numerical control device can be made fast to increase the cutting speed and the glass plate can be cut accurately.

[Brief description of drawings]

FIG. 1 is a front view of a numerically controlled cutting machine for glass plates according to the present invention.

FIG. 2 is a plan view of a numerically controlled cutting machine for glass plates according to the present invention.

FIG. 3 is an enlarged sectional view of a main part of a numerically controlled cutting machine for glass plates according to the present invention.

FIG. 4 is an operation explanatory view of the numerically controlled cutting machine for glass plates according to the present invention.

[Explanation of symbols]

 1 table 2 machine stand 3 frame 4 glass plate 5 slide rail device 6 first linear motion table 7 rail body 8 slide 9 feed screw device 10 Y-axis servo motor 11 ball screw 12 nut 13 bearing 14 slide rail device 15 second linear motion Stand 16 Rail body 17 Slide 18 Feed screw device 19 Ball screw 20 Nut 21 Bearing 22 X-axis servo motor 24 Cutter head 25 Cylinder device 26 Piston rod 27 Cutter holder 28 Cutter wheel 30 Z-axis servo motor 31 Spline device 32 Spline bearing 33 Spline bearing 34 Bearing 35 Housing body 36 Gear 37 Plate base 38 Gear

Claims (1)

[Claims] 1. A holding device for holding a glass plate to be cut, and a first direction parallel to the surface of the glass plate with respect to the holding device and a surface of the glass plate orthogonal to the first direction. Between the work head support base movable relative to the holding device and a work head support base movable relative to the holding device. A drive device provided, a work head mounted on the work head support, a cutting device including a cutter wheel attached to the work head for cutting the glass plate, and the cutting device including the first cutting device. Direction mounted on the work head so as to be rotatable on one surface including the direction and the second direction, and relative movement of the work head support and rotation of the cutting device. In order to numerically control A rotary control device, and a numerical control device connected to a moving device and a rotation drive device, and a pressing device provided on the working head for applying a cutting pressure to the glass plate to the cutting device. A numerically controlled cutting machine for glass plates, wherein an extension line of the rotation center of the glass plate substantially intersects the rotation axis of the cutter wheel.