JP2000158307A - Chamfering device for plate-shaped body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To press a grinding wheel with a small force by supporting a rotation shaft rotatably and axially movably by means of a bearing member, rotating the grinding wheel with a rotation driving means, axially moving the rotation shaft, and pressing an end surface portion of a plate-shaped-body with rotation the grinding wheel. SOLUTION: A rotation shaft 38 is journalled to a bearing 36 and a bearing 40, namely, both the bearing 36 and the bearing 40 journal the rotation shaft 38 rotatably and axially movably. By driving a motor 68 and by rotating a spline outer cylinder 36B of the bearing 36 by being driven by a belt, the rotation shaft 38 is rotated. When a cylinder 80 is driven, a rod 82 extends to press a pressed plate 84 provided for a shaft end of the rotation shaft 38 with a constant pressure. Thus, the rotation shaft 38 advanced forward against an energized force by a spring 74. As a result, a grinding wheel 4 rotates at a high speed, and simultaneously abuts to a side end surface 3 of a glass plate 1 with a constant pressure. The grinding wheel 4 polishes the abutted side end surface 3 with a constant pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-shaped body chamfering apparatus, and more particularly to a plate-shaped body chamfering apparatus for chamfering a thread surface or an edge of a glass plate (plate-shaped body).

[0002]

2. Description of the Related Art In a glass-filled showroom or the like, when an end face of an assembled glass plate is exposed, the end face is chamfered in consideration of safety and appearance. This chamfering is performed by grinding both edges of the end face portion at a fixed angle, and after the processing, polished chamfering is performed. The glass plate 1 is polished and chamfered as shown in FIG. 3 on both the chamfered end yarn surfaces 2 and 2 and the edge surface 3.

The edge 3 is polished and chamfered by pressing a cup-shaped grindstone 4 rotated at high speed perpendicular to the edge 3 as shown in FIG. 3 must be pressed with a constant load F. That is, it is necessary to perform polishing chamfering by constant pressure polishing. For this reason, the conventional chamfering apparatus uses a special motor, i.e., a motor having a configuration in which the spindle can slide, to rotate the grindstone, and directly presses the spindle of the motor with the cylinder to push the grindstone with a constant load. Pressure was applied. As another method, a motor equipped with a grindstone is installed on a slide table,
The pressing force of a constant load was applied to the grindstone by directly pressing the motor with a cylinder.

[0004]

However, the conventional chamfering device using a special motor has a disadvantage that the manufacturing cost is high because the motor is a custom-made product. In addition, the chamfering device configured to move the motor has a drawback that the machining fluid is directly applied to the motor, so that maintenance is poor. In addition, there is a disadvantage in that a large driving force is required because the motor is directly pressed, and high precision processing cannot be performed because fine adjustment of the pressing force is difficult.

The present invention has been made in view of such circumstances, and has as its object to provide an inexpensive plate-shaped chamfering apparatus which has good maintainability and can perform high-precision machining.

[0006]

According to the present invention, there is provided a plate-shaped body chamfering apparatus for chamfering an end surface of a plate by pressing a rotating grindstone against the end of the plate.
A rotating shaft connected to the grinding wheel, a first bearing portion connected to the rotating shaft so as to transmit a rotational force and supporting the rotating shaft movably in an axial direction; A bearing member for supporting the rotating shaft rotatably and movably in the axial direction; and transmitting a rotational force to a first bearing portion of the bearing member to rotate the rotating shaft. The rotation device is configured to rotate the grindstone by rotating the rotating shaft in the axial direction, and to press the grindstone against the end surface of the plate-like body.

According to the present invention, the rotating shaft to which the grindstone is connected is supported by the bearing member so as to be rotatable and movable in the axial direction. The grindstone is rotated by rotating the first bearing portion of the bearing member by the rotation driving means, and is moved by moving the rotating shaft in the axial direction by the moving means. Thereby, the grindstone is pressed against the end face of the plate-like body while rotating, and chamfers the end face.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a plate-shaped body chamfering device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a partial side sectional view showing a configuration of a chamfering apparatus 10 according to the present embodiment. As shown in FIG. 1, a vertically inclined angle adjustment table 14 is supported on a horizontally installed base 12 so as to be vertically swingable about a pin 16. A piece 18 is fixed to one end of the lower surface of the vertical tilt angle adjustment table 14, and the piece 18 is placed on a wedge 20 provided on the base 12. The wedge 20 is provided at the tip of a vertical tilt angle adjusting bolt 22 provided on the base 12, and advances by screwing the vertical tilt angle adjusting bolt 22. When the wedge 20 moves forward, the inclination angle of the vertical inclination angle adjustment table 14 changes. The vertical tilt angle adjusting table 14 is configured such that fixing plates 24, 24 disposed on the lower surface thereof are bolted to fixing plates 28, 28 disposed on the base 12 side by bolts 26, 26. Is fixed by

On the vertical tilt angle adjustment table 14, a horizontal tilt angle adjustment table 30 is mounted. The horizontal tilt angle adjusting table 30 is provided so as to be swingable in the horizontal direction about a pin 32 fixed to the vertical tilt angle adjusting table 14, and the horizontal tilt angle changes by swinging. . The horizontal tilt angle adjustment table 30 is fixed to the vertical tilt angle adjustment table 14 with bolts (not shown).

On the horizontal tilt angle adjusting table 30, a fixed bearing bracket 34 is vertically provided. A bearing 36 is fixed to the fixed bearing bracket 34,
A rotary shaft 38 is supported by the bearing 36. Rotary axis 3
The other end of 8 is supported by a bearing 40, which is fixed to a moving bearing bracket 42. The movable bearing bracket 42 is vertically provided on a slide table 44, and the slide table 44 is slidably provided on a gantry 46 provided on the horizontal tilt angle adjustment table 30. That is, a guide rail 48 is laid on the lower surface of the slide table 44, and the guide rail 48 is slidably supported by linear guides 50, 50 disposed on the gantry 46.

A nut member 52 is fixed to the upper end of the movable bearing bracket 42. The nut member 52 is screwed to a threaded rod 54 provided along the rotation shaft 38. The screw rod 54 is rotatably supported by bearings 56, 56, and the bearings 56, 56 are disposed at predetermined intervals on a portal-type support frame 58 installed on the gantry 46. A dial 62 is mounted on the support frame 58 via a support bracket 60, and a rotating shaft 62 </ b> A of the dial 62 is connected to a screw rod 54 via a joint 64. Therefore, when the dial 62 is rotated, the screw rod 54 is rotated accordingly, and as a result, the nut member 52 screwed to the screw rod 54 is rotated.
Moves along the screw rod 54. When the nut member 52 moves, the moving bearing bracket 42
Move along the rotation axis 38. At this time, since the flange 40C is fixed to the rotating shaft 38, the rotating shaft 38 moves back and forth along the axial direction similarly to the slide table 44.

As described above, the rotating shaft 38 is supported by the bearing 36 and the bearing 40. Both the bearing 36 and the bearing 40 support the rotating shaft 38 so as to be rotatable and movable in the axial direction. The specific configuration is as follows.
FIG. 2 is a perspective view illustrating a configuration of a main part of the bearing 36. As shown in the figure, the bearing 36 is configured with an outer ring 36A and a spline outer cylinder 36B as main members. The spline outer cylinder 36B is rotatably supported on the inner periphery of the outer ring 36A via a ball 36C (movement in the axial direction is restricted), and a spline (not shown) is formed on the inner periphery. ing.

On the other hand, as shown in FIG. 1, a spline groove 38A is formed on the outer periphery of a rotating shaft 38 supported by the bearing 36, and the spline groove 38A is formed in the spline outer cylinder 36B. Is fitted to the spline. Therefore, the rotating shaft 38 is slidably supported in the axial direction by the spline outer cylinder 36B fitted with the spline, and is rotatably supported by the outer ring 36A via the spline outer cylinder 36B. That is, the rotating shaft 3
8 is supported by a bearing 36 so as to be rotatable and movable in the axial direction.

The same applies to the configuration of the bearing 40 on the other side, which comprises an outer race 40A and a spline outer cylinder 40B. The rotating shaft 38 is spline-fitted to the spline outer cylinder 40B. Therefore, the rotating shaft 38 is slidably supported in the axial direction by the spline outer cylinder 40B fitted with the spline, and is rotatably supported by the outer ring 40A via the spline outer cylinder 40B.

The bearing 36 has an outer ring 36A fixed to a fixed bearing bracket 34, and the bearing 40 has an outer ring 40A fixed to the movable bearing bracket 4A.
It is fixed to 2. Bearing 36 configured as described above
As shown in FIG. 1, a driven pulley 66 is fixed to the spline outer cylinder 36B. On the other hand, a motor 68 is installed on the horizontal tilt angle adjustment table 30,
A drive pulley 70 is fixed to the output shaft of the motor 68. A drive belt 72 is wound around the driven pulley 66 and the drive pulley 70. When the motor 68 is driven to rotate the drive pulley 70, the rotation is transmitted to the driven pulley 66 via the drive belt 72. . When the driven pulley 66 rotates, the spline outer cylinder 36B of the bearing 36 rotates, and the rotation is transmitted to the rotation shaft 38, and the rotation shaft 38 rotates.

A spring 74 is attached to the spline outer cylinder 40B of the bearing 40 fixed to the moving bearing bracket 42.
Is fixed, and the other end of the spring 74 is connected to the rotating shaft 3.
8 is fixed to a flange 76 formed in the same. The rotating shaft 38 is urged rightward in FIG. 1 by the spring 74, whereby the grindstone is retracted from the glass and held at a fixed position in a no-load state where the rotating shaft 38 is not pressed by the cylinder 80. .

On the slide table 44,
A cylinder 80 is installed horizontally via a bracket 78. The rod 82 of this cylinder 80 is
When the cylinder 80 is driven, it extends and presses the pressing plate 84 provided at the shaft end of the rotating shaft 38 with a constant pressure. Thereby, the rotating shaft 38 moves leftward in FIG. 1 against the urging force of the spring 74.

The pressing plate 84 is rotatably supported on the rotating shaft 38 via a bearing (not shown).
Therefore, when the rotating shaft 38 is rotating, the rod 8
2, the rotation of the rotating shaft 38 is cut off by the pressing plate, so that the rotation is not transmitted to the rod 82. As described above, the rotation shaft 38 rotates by driving the motor 68. Then, the rod 82 of the cylinder 80 pushes the shaft end to move forward (moves to the left in FIG. 1), and when the pressing force is released, it retreats by the urging force of the spring 74 (right in FIG. 1). Moved to). A cup-shaped grindstone 4 for chamfering the edge 3 of the glass plate 1 is attached to the tip of the rotating shaft 38, and is rotated and moved back and forth.

At the time of processing, a processing liquid is supplied to a contact portion between the grindstone 4 and the edge surface 3. In order to prevent the inflow of the machining fluid, a bearing cap 86 is attached to the end of the spline outer cylinder 36B of the bearing 36, and an oil seal 88 is provided between the outer periphery of the bearing 36 and the fixed bearing bracket 34 so that the sealing is performed. It has been subjected. In addition, the entire drive unit is covered with a cover 90 in order to prevent the scattered machining fluid from splashing on the drive unit.

The operation of the chamfering apparatus 10 according to the present embodiment, constructed as described above, is as follows. First, initialization is performed. That is, the vertical tilt angle adjustment table 14
And the horizontal tilt angle adjustment table 30 are tilted by a predetermined angle, respectively, so that the grindstone 4 adjusts the attitude of the grindstone 4 with respect to the edge surface 3 of the glass plate 1. Further, the grindstone 4 is positioned at a predetermined position so that the gap between the grindstone 4 and the glass plate 1 is a predetermined distance. This positioning is performed by rotating the dial 62 to move the rotary shaft 38 back and forth. That is,
Since the flange 40C is fixed to the rotating shaft, when the dial 62 is rotated, the rotating shaft 38 moves back and forth along the axial direction together with the slide table 44, thereby positioning the grindstone 4 at a predetermined position.

After the above-mentioned initial setting is completed, polishing of the edge 3 of the glass plate 1 is started. First, the glass plate 1 is positioned and placed on a work table (not shown). The work table holds the glass plate 1. When the glass plate 1 is held on the work table, its center in the thickness direction is located at a position substantially at the same height as the center of the grindstone 4, and its edge surface 3 is positioned at a predetermined distance from the grindstone 4. Located in.

Next, the motor 68 is driven to rotate the rotating shaft 38 at high speed. Thereby, the grindstone 4 rotates at high speed. Next, the cylinder 80 is driven to extend the rod 82.
Thus, the rotating shaft 38 is pushed by the rod 82 and moves forward. Then, as a result, the grindstone 4 comes into contact with the edge surface 3 of the glass plate 1 at a constant pressure while rotating at a high speed. Whetstone 4
The abutted edge 3 is polished at a constant pressure.

When the grindstone 4 comes into contact with the glass plate 1, the work table slowly starts moving horizontally in a direction perpendicular to the rotating shaft 38. Then, as a result, the edge surface 3 formed on the end surface of the glass plate 1 is continuously polished and chamfered. When the polishing chamfering of all the edge surfaces 3 is completed, the cylinder 80 is driven to retract the rod 82.
As a result, the rotating shaft 38 is retracted by the urging force of the spring 74, and the grindstone 4 is separated from the edge surface 3 of the glass plate 1. Next, the drive of the motor 68 is stopped to stop the rotation of the grindstone 4. Thus, the processing is completed, and the glass plate 1 is removed from the work table and collected.

As described above, the chamfering apparatus 10 according to the present embodiment
According to the above, since only the rotating shaft 38 is pressed by the cylinder 80 to move the grindstone 4, a smaller force is required as compared with a conventional configuration in which the entirety including the motor is pressed and moved by the cylinder. The whetstone 4 can be moved with. Thereby, fine adjustment of the pressing force at the time of pressing the whetstone 4 against the edge surface 3 can be easily performed,
High-precision machining can be performed. In addition, a small cylinder 80 can be used as a result, and the overall size of the apparatus can be reduced.

Further, the chamfering device 10 according to the present embodiment
Since it can be manufactured as a general-purpose product including the bearings 36 and 40, it can be manufactured at a lower cost than a device using a conventional custom-made motor. Furthermore, the chamfering device 10 according to the present embodiment has a configuration in which the rotating shaft 38 and the motor 68 are separated, so that high sealing performance can be maintained. As a result, it is possible to effectively prevent the machining liquid from being applied to the motor 68 and being damaged. This also improves maintainability.

In the chamfering apparatus 10 of the present embodiment, the case where the edge 3 of the glass plate 1 is polished and chamfered has been described. Alternatively, it can also be used to polish the edge of the edge. Further, in the chamfering device 10 of the present embodiment, the work table side holding the glass plate 1 is
However, the chamfering device 10 itself may be provided so as to be movable in a direction orthogonal to the rotation shaft 38, and the chamfering device 10 may be moved to perform processing.

Further, the chamfering device 10 according to the present embodiment
It is not limited to only the polished chamfer of the edge 3,
The present invention can also be applied to an apparatus for chamfering the yarn surface 2.

[0028]

As described above, according to the present invention,
Since the grindstone is configured to move only the rotating shaft and press the grindstone against the end face of the plate-like body, the grindstone can be pressed with a smaller force than a conventional device that directly presses the motor and presses the grindstone against the end face. It can be pressed against the end face. This also makes it possible to easily perform fine adjustment of the pressing force, thereby improving processing accuracy. In addition, since all can be manufactured using general-purpose products, manufacturing costs can be suppressed. Further, the sealing performance can be improved as compared with the conventional device, and the maintenance performance is also improved.

[Brief description of the drawings]

FIG. 1 is a partial side sectional view showing a configuration of a chamfering apparatus according to an embodiment.

FIG. 2 is a perspective view showing a configuration of a bearing.

FIG. 3 is a perspective view showing a method of chamfering the edge surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Glass plate (plate-shaped body) 3 ... Edge surface 4 ... Grinding stone 10 ... Chamfering device 12 ... Base 36 ... Bearing (bearing member) 38 ... Rotating shaft 40 ... Bearing (bearing member) 68 ... Motor (rotation drive means) 80 ... Cylinder (pressing means)

Claims (2)

[Claims] 1. A plate-shaped chamfering apparatus for chamfering an end face portion by pressing a rotating grindstone against an end face portion of a plate-shaped body, comprising: a rotating shaft connected to the grindstone; and a rotational force transmission to the rotating shaft. A first bearing portion which is connected so as to be movable and supports the rotating shaft so as to be movable in the axial direction;
A second bearing portion rotatably supporting the first bearing portion, the bearing member rotatably supporting the rotating shaft and being movable in the axial direction, and a rotational force applied to the first bearing portion of the bearing member. A rotating drive unit that transmits and rotates the grindstone by rotating the rotating shaft; and a pressing unit that moves the rotating shaft in the axial direction and presses the grindstone against an end surface of the plate-like body. A chamfering apparatus for a plate-like body, characterized in that: 2. The apparatus for chamfering a plate-like body according to claim 1, wherein said pressing means is a pressing means for pressing said whetstone against an edge of said plate-like body at a constant pressure.