JPH0249864B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a glass plate processing machine.

Some of the present glass plate processing machines are configured to perform pencil edge grinding on the peripheral edge, ie, the edge, of a glass plate, for example. In other words, the glass plate processing machine according to the present invention grinds the peripheral edge, for example, the edge, of the glass plate using a grinding wheel, that is, a processing wheel, in which a grinding groove for grinding is formed on the outer circumference. , is configured to obtain an edge with a top and bottom surface or a rounded edge (a round edge or a radiused edge).

The above-mentioned pendill edge grinding process is performed with the edge part, which is the peripheral part of the glass plate, inserted into the grinding groove formed on the outer periphery of the processing wheel. This results in an edge portion of the glass plate having a cross-sectional shape that follows the cross-sectional shape of the grinding groove and is complementary to the cross-sectional shape.

Pencil edge grinding is performed with the edge of the glass plate inserted into the grinding groove of the processing wheel as described above, so that the extension direction line of the edge of the glass plate and the extension direction line of the grinding groove are aligned. If the extension direction line of the edge of the glass plate is curved or inclined with respect to the direction perpendicular to the surface of the glass plate, grind the edge of the glass plate in the same condition. It is difficult to grind the edge into the same shape and size. In particular, the thread surfaces formed on the upper and lower surfaces of the glass plate may not be formed uniformly, and there may be wide portions, thin portions, or no portions at all.

Therefore, in order to perform the pen-mill edge grinding process with the desired dimensional accuracy, the glass plate must be completely flat so that the extension direction line of the edge portion of the glass plate always matches the extension direction line of the grinding groove of the processing wheel. It is necessary to set the glass plate and feed the glass plate with high precision, and such a glass plate processing machine inevitably becomes expensive.

The present invention has been made in view of the above points, and its purpose is to constantly stretch the edge portion of a glass plate without requiring high-precision techniques for setting or feeding the glass plate. It is an object of the present invention to provide a glass plate processing machine capable of performing pendile edge grinding in a state where a direction line and a stretching direction line of a grinding groove of a processing wheel are aligned.

According to the present invention, the object is to provide a grinding wheel for accommodating a peripheral portion, which is an edge portion of a glass plate, in a grinding groove formed in an outer peripheral portion, and for grinding the peripheral portion using the grinding groove; a rotor shaft having the grinding wheel attached to one end and arranged vertically; a casing supporting the rotor shaft rotatably and movably along the axial direction of the rotor shaft; a drive device connected to the rotor shaft to rotationally drive the rotor shaft; and a drive device having an elastic force, the movement direction of the rotor shaft along the axial direction due to the elastic force and the weight of the processing wheel and the rotor shaft. an elastic device disposed between the abutting rotor shaft and the casing to maintain the rotor shaft in a neutral position by balancing the forces; a bottom portion of the glass plate adjacent to and extending continuously from the peripheral edge for guiding the rotor shaft in one direction during movement of the rotor shaft along the axial direction; a first wall abutting one surface; a first wall adjacent to and continuous from the peripheral edge for guiding the rotor shaft in the other direction of movement along the axial direction of the rotor shaft; a second surface that abuts the other surface of the glass plate that extends;
This is achieved by a glass plate processing machine characterized by having a wall portion of.

The glass plate processing machine according to the present invention includes, for example, (i) a glass plate to be ground is fixed, and a grinding head, that is, a grinding spindle and a grinding wheel are controlled by a numerical control system to control the edge portion of the glass plate; A numerically controlled glass plate processing machine that performs pencil edge grinding while moving around the glass plate, (ii) A control system that imitates the grinding head, that is, the grinding spindle and the grinding wheel, while the glass plate to be ground is fixed. (iii) a glass plate processing machine using scanning control that grinds a pendill edge while moving around the edge of the glass plate; and (iii) fixed to a turntable that rotates in one horizontal plane of the glass plate to be ground. The grinding head is mounted on an arm that moves forward and backward relative to the turntable.
It includes a turntable-type glass plate processing machine that uses air pressure or a weight load to press a grinding wheel attached to a grinding spindle against a glass plate and performs pen-jill edge grinding.

DESCRIPTION OF THE PREFERRED EMBODIMENTS As a specific example of the present invention, a turntable type glass plate processing machine will be described below with reference to the drawings.

FIG. 1 shows an overall outline of a glass plate processing machine according to the present invention.

1 is a turntable. Turntable 1
attracts and fixes the glass plate 16 and rotates in a horizontal plane.

2 is a grinding head. This grinding head is mounted on arm 3. The arm 3 is rotatably attached to the machine frame 4 so as to be able to rotate in a horizontal plane, and moves forward and backward with respect to the turntable 1 (horizontal swing).

An air cylinder or weight mechanism is connected to this arm 3 so that the grinding head 2 can be pressed against the glass plate 16 fixed to the turntable 1 with the necessary load.

As shown in FIG. 2, the grinding head 2 includes a grinding spindle, a processing wheel 7 as a grinding wheel mounted on one end 28 of a rotor shaft 6 of the grinding spindle 5, and a grinding spindle 5.
and a slide device 8 for controlling the position adjustment of the processing wheel 7 in the vertical direction in FIG. The machining wheel 7 has a grinding groove 17 formed in the outer circumferential portion, that is, the outer circumferential portion 20, and a pendant edge that follows the shape of the grinding groove 17, that is, has a complementary shape to the shape of the grinding groove 17, is made of glass. It is constructed so as to be obtained in the processing operation of the plate 16.

That is, the processing wheel 7 is configured to accommodate the peripheral edge part 21 including the edge 22 of the glass plate 16 in a grinding groove 17 formed in the outer peripheral part 20, and perform the grinding process using the grinding groove 17. .

Further, the grinding groove 17 is formed on the edge 2 of the glass plate 16.
2, and a glass plate 16 adjacent to the edge 22 and extending continuously from the edge 22.
a wall portion 25 that abuts one surface 24 of the edge 2;
2 and extending continuously from the edge 22, the wall portion 27 contacts the other surface 26 of the glass plate 16;
It is composed of. Incidentally, the peripheral edge portion 21 of the glass plate 16 is composed of an edge 22, a surface 24, and a surface 26.

Incidentally, it is preferable that the grinding groove 17 is made of diamond. And, as shown in Figure 2,
The grinding spindle 5 has a structure that includes a motor that is an example of a drive device and a motor spindle that also serves as a spindle, and the rotor shaft 6 has a rotor core, that is, a rotor attached to the center of the rotor shaft 6. There is.

Furthermore, the grinding spindle 5 has a casing 11 that includes a stator core and a stator coil 10, respectively.
and a rotor shaft 6 held by bearings 12 and 12 built into the casing 11. The rotor shaft 6 is held in a casing 11 so as to be movable along the axial direction of the rotor shaft 6.

That is, the casing 11 rotatably supports the rotor shaft 6 to which the processing wheel 7 is attached at one end 28 and is movable along the axial direction of the rotor shaft 6.

Further, the rotor shaft 6 is rotationally driven by a drive device serving as a motor, which is constituted by a rotor 9 which is a rotor core connected to the rotor shaft 6, a stator core, and a stator coil 10.

The bearings 12 and 12 hold the rotor shaft 6 at the upper and lower portions in FIG. 2 that sandwich the rotor 9 therebetween.

A bottomed cylinder 13 is incorporated into the rotor shaft 6 at the lower portion of the rotor 9 so as to open downward in FIG.
A coil spring 14 as an elastic device is incorporated inside this cylinder 13. A thrust bearing 15 is further incorporated into the rotor shaft 6, and one surface of the thrust bearing 15 receives elastic pressure from the coil spring 14, and the other surface presses against the wall 18 of the casing 11. Furthermore, as the rotor shaft 6 moves downward in FIG. 2 along the axial direction, the cylinder 13 abuts against the wall 18 of the casing 11 at the open end of the cylinder 13.

A bearing 12 is also incorporated into the rotor shaft 6 at the upper portion of the rotor 9, and when the rotor shaft 6 moves beyond a predetermined range, this bearing 12 hits the wall 19 of the casing 11 and the rotor The shaft 6 is configured to stop.

By the way, while the grinding spindle 5 is operating, that is, while the rotor shaft 6 is rotating, the weight of the rotor shaft 6 and the processing wheel 7 and the coil spring 1 are
4 is balanced with the repulsion elastic force. The rotor shaft 6 is rotating in this balanced position. Then, the rotor shaft 6 is attached to the processing wheel 7.
If even a slight force is applied in the axial direction (in the vertical direction in FIG. When pressed into contact with the machining wheel 7, the machining wheel 7 changes its position in the vertical direction. When this axial force is removed, the processing wheel 7 returns to its original balanced position.

That is, the coil spring 14 brings the rotor shaft 6 to the neutral position by balancing the elastic force of the coil spring with the force in the moving direction of the rotor shaft 6 along the axial direction due to the weight of the processing wheel 7 and the rotor shaft 6. The rotor shaft 6 is disposed between the rotor shaft 6 and the casing 11 to maintain the rotor shaft 6 and the casing 11.

According to one specific example of the glass plate processing machine of the present invention as described above, the processing wheel 7 is made up of the weight of the rotor shaft 6 on which the processing wheel 7 is mounted and the elastic force of the coil spring 14 that supports this weight. The machining wheel 7 rotates at a balanced position, and the position of the machining wheel 7 can be freely changed if the force in the axial direction is applied to the machining wheel 7. In other words, the processing wheel 7 is configured to be able to freely move in the axial direction.

Therefore, even when the line in the extension direction of the peripheral edge 21 of the glass plate 16 is not direct due to sagging of the peripheral edge 21, which is the edge part of the glass plate 16 fixed on the turntable 1, or a horizontal plane deviation, etc. The processing wheel 7 is guided by the peripheral edge 21 of the glass plate 16 that has entered its grinding groove 17, and is always moved in the axial direction in response to the change in the line of the peripheral edge 21 of the glass plate 16. In other words, the processing wheel 7 is connected to the peripheral edge 2 of the glass plate 16
1, and the grinding process is carried out in a state where the extending direction of the grinding groove 17 and the extending direction of the peripheral edge 21 of the glass plate 16 are always aligned, and as a result, the width of the upper and lower thread surfaces of the glass plate 16 is A pen die edge with a uniform shape and accurate dimensions can be obtained.

From the above, in the glass plate processing machine of the present invention, the processing wheel is attached to one surface of the glass plate to be processed in order to guide the rotor shaft in one direction in the movement of the rotor shaft along the axial direction. a first wall portion that abuts, a bottom portion that abuts an edge of the glass plate, and another surface of the glass plate for guiding the rotor shaft in the other direction during movement of the rotor shaft along the axial direction. A grinding groove is formed on the outer periphery of the processing wheel, and includes a second wall that abuts the edge of the glass plate and a peripheral edge that is formed by one and the other surface of the glass plate. In a state in which the elastic force of the elastic device and the force in the axial direction of movement of the rotor shaft due to the weight of the processing wheel and rotor shaft are balanced, the grinding groove cuts the peripheral edge of the rotor shaft. Since the glass plate to be processed is configured to grind, the peripheral edge of the glass plate to be processed may be deformed into a wave shape in the direction perpendicular to the surface, or the glass plate to be processed may be By accommodating the peripheral edge of the deformed or misplaced glass plate in the grinding groove, the first wall portion or the second wall portion may be offset from each other. Either one of them comes into contact with one of the surfaces of the glass plate to be processed depending on the state of deformation or deviated arrangement position in the vertical direction, and this contact causes the processing wheel to move in the vertical direction. That is, it can be moved in either the vertical direction, and as a result, the direction in which the grinding grooves of the processing wheel extend and the direction in which the peripheral edge of the glass plate to be processed extends can be matched. In other words, even if the processing wheel is deformed in the vertical direction or the state of the disposed position changes, the extension direction of the grinding groove can be made to match the extension direction of the peripheral edge of the glass plate to be processed, That is, the grinding condition by the grinding grooves of the processing wheel can be kept the same, and therefore the peripheral edge of the glass plate can be ground into the same shape and size.

[Brief explanation of the drawing]

FIG. 1 is a front view of a specific example of a glass plate processing machine of the present invention, FIG. 2 is a sectional view showing a specific example of a grinding spindle of the glass plate processing machine of the present invention, and FIG. FIG. 2 is an explanatory diagram of the operation of the glass plate processing machine of the present invention. 1... Turntable, 2... Grinding head, 3
... Arm, 4 ... Machine frame, 5 ... Grinding spindle, 6 ... Rotor shaft, 7 ... Processing wheel, 8 ... Slide device, 9 ... Rotor, 10 ...
...Stator coil, 11...Casing, 12...
Bearing, 13... Cylinder, 14... Coil spring, 15... Thrust bearing, 16... Glass plate, 17... Grinding groove, 18... Casing wall, 19... Casing wall.

Claims (1)

[Claims] 1. A grinding wheel for accommodating the peripheral edge of a glass plate in a grinding groove formed on the outer circumference and grinding the peripheral edge using the grinding groove, and this grinding wheel is attached to one end, and A rotor shaft disposed in the vertical direction; a casing supporting the rotor shaft rotatably and movably along the axial direction of the rotor shaft; and a casing connected to the rotor shaft to rotationally drive the rotor shaft. a drive device, which has an elastic force, and neutralizes the rotor shaft by balancing the elastic force with a force in the moving direction of the rotor shaft along the axial direction due to the weight of the grinding wheel and the rotor shaft; an elastic device disposed between the rotor shaft and the casing to hold the rotor shaft in position; a first wall abutting one side of the glass plate adjacent to and extending continuously from the peripheral edge to guide the rotor shaft in one direction of movement along the direction; a second surface of the glass plate adjacent to and extending continuously from the peripheral edge and abutting on the other surface of the glass plate to guide the rotor shaft in the other direction in the movement of the rotor shaft along the axial direction; 2. A glass plate processing machine characterized by comprising: 2 wall portions.