JPS62176746A - Two-surface chamfering machining device for glass material - Google Patents

Abstract

PURPOSE:To enable chamfering of the two surfaces of glass materials having different sizes at an optimum angle, by a method wherein plural wheelform grinding bodies, respectively attached on two rotary shafts, are disposed rotatably and so as to allow contact and separation in a condition to be alternately engaged with each other. CONSTITUTION:Five each of wheelform grinding bodies 20, on the peripheral surface 21 of each of which diamond grains are coated, are attached on two rotary shafts 22 by means of a sander belt 23 in a condition to be alternately engaged with each other, and are situated touchably and separably by means of a regulating handle. By means of a guide means 9 wherein a staged roll group 9a made of resin is disposed linearly on a base plate 9b, a glass plate 7 is fed on peripheral surfaces 21, positioned facing each other, of the two grinding bodies 20, the two surfaces of the lower part of the glass plate 7 can be ground at an optimum angle (45 deg.). In this constitution, although a glass material has different thicknesses ranging from a low value to a high value, chamfering of two surfaces is practicable at an optimum angle.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a double-thread chamfering device for glass materials such as glass plates and glass rods, and particularly to a double-thread chamfering device for glass materials suitable for processing glass materials ranging from large thicknesses to small glass materials.

[Conventional technology]

As a conventional double-thread chamfering device for glass material, there is one shown, for example, in FIGS. 4 to 7. 1 is a pair of sander belts, the surface of which is abrasive 2 with abrasive particles applied to the housing 3.
It is wound around the three rotating rollers 4 to 6 in such a manner that they are positioned facing each other. Among the rotating rollers 4 to 6, rotating roller 4 is for power, rotating roller 5 is for tension adjustment,
The rotating roller 6 is used for grinding adjustment. The uppermost rotating roller 6 for grinding adjustment can be moved toward and away from an adjustment handle (not shown), and the rotating roller 6 can be adjusted according to the thickness of the glass plate 7 as the "glass material" to be processed. The distance between the six points can be adjusted. and,
The glass plate 7 to be processed is placed on a guide rail 8 and guided between the grinding surfaces 2 of the sander belt 1 facing each other at the part wound around the rotating roller 6, and the rotating sander belt l
Both thread surfaces at the lower end of the glass plate 7 are ground between the opposing grinding surfaces 2 . Note that 9 is a shower nozzle that sprays water to prevent the grinding powder from scattering. Further, 10 indicates a transparent protective cover, and 11 indicates a power switch.

[Problems to be solved by the invention]

However, in such conventional technology, the lower end of the glass plate 7 is chamfered on both sides between the grinding surfaces 2 of the sander belt 1 facing each other at the part wound around the rotating roller 6. By adjusting the distance between the rotating rollers 6, glass plates 7 of various j″L sizes can be produced.
However, there is a limit to how close the rotating sander belt 1 can be, and when processing a glass plate 7 whose thickness is too small, it is necessary to use a normal thickness. Compared to the glass plate 7a of the same size, the yarn surface
(α) [see Figure 7]. In particular, there are glass materials with surface treatments or other treatments that are incorporated into the optical systems used in modern office equipment. It is required to accurately chamfer both threads over the entire length of the thread surface.
Conventional devices have not been able to adequately meet this requirement. This invention was made by focusing on such conventional technology, and it is possible to chamfer both threads at the optimum angle (45°) even for glass materials with large to small thickness sizes. It is an object of the present invention to provide a double-thread chamfering device.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a plurality of wheel-shaped grinding bodies each attached to two rotating shafts, which are disposed in a staggered state so that they can freely rotate and approach and separate from each other. Both thread surfaces of the glass material are ground on the circumferential surfaces of the re-grinding bodies that face each other at the interlocking portion.

[For production]

The grinding bodies that take the thread surface of the glass material can move toward and away from each other while interlocking with each other, so the grinding bodies can be brought close enough to each other, making it almost ideal for glass materials with small thicknesses. Double thread chamfering can be performed at an angle (45°).

【Example】

A preferred embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Incidentally, the same reference numerals are given to the parts common to the conventional ones, and redundant explanation will be omitted. Reference numeral 20 denotes a wheel-shaped grinding body having diamond grains applied to its circumferential surface 21 as abrasive grains, and five of these are attached to two parallel rotating shafts 22 at predetermined intervals. These grinding bodies 20 are disposed in a staggered manner in the longitudinal direction of the rotating shaft 22, and can be moved toward and away from each other by an adjustment handle (not shown). Further, a sander belt 23 which also serves as a drive belt is wound around the rotating shaft 22, and is used to rotate the rotating shaft 22 together with the grinding body 20. Therefore, the guide means 9 in which a stepped roll group 9a made of resin is linearly arranged on the hairspray 1.9b l- is used to guide the glass plate 7 as a "glass material", and the mutually interlocking parts are guided. On the circumferential surface 21 of the re-grinding body 20 that faces the re-grinding body 20, both lower thread surfaces of the glass plate 7 sent there can be ground at an r&circumferential angle of 45°. In other words, since the respective grinding bodies 20 that take the thread surface of the glass plate 7 can approach and separate freely while being interlocked with each other, the distance l between the grinding bodies 20 can be changed from that of a conventional sander belt or the like. It can be made sufficiently small in comparison. Therefore,
Almost the optimum angle (45°) even for the glass plate 7 with small thickness size
) can be used to chamfer both threads. The housing 24 is provided with a working opening 26 for removing the corner 25 of the glass plate 7, and the corner 25 of the glass plate 7 is inserted therein [see imaginary line in Figure 2] and rotated inside. Corner 2 of the glass plate 7 to the grinding surface 27 of the sander belt 23
It is also possible to grind by pressing the 5th part.

【effect】

Since the device for chamfering both threads of glass material according to the present invention has the content as described above, it is possible to chamfer both threads at the optimum angle even for glass materials with large to small thicknesses. 'JJ fruit is there. Further, according to the embodiment of the present invention, a sander belt is used as the drive belt, and the housing is provided with a work opening for chamfering the glass material, so that it is possible to chamfer the glass material as well as chamfer both threads. There is a side effect of being able to do so.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a grinding body used in a double-thread chamfering device for glass material according to an embodiment of the present invention, and FIG.
FIG. 3 is an explanatory diagram showing the relationship between the grinding body and the glass plate; FIG. 4 is a schematic side view corresponding to the conventional FIG. 2; Fig. 5 is a plan view seen from the direction of the arrow in Fig. 4, Fig. 6 is an explanatory view corresponding to Fig. 3 according to a conventional example of this invention, and Fig. 7 is a diagram showing the grinding of both thread surfaces of a glass plate. FIG. 7...-Glass plate [glass material] 20...-Wheel-shaped grinding body 21...-Surrounding surface 22... Rotating shaft Fig. 2 Fig. 5

Claims (1)

[Claims] A plurality of wheel-shaped grinding bodies are attached to two rotary shafts, respectively, and are arranged so that they can rotate freely and move toward and away from each other in an alternately meshed state, and the periphery of both grinding bodies that face each other at the meshing part is A device for chamfering both threads of a glass material, characterized by grinding both thread surfaces of the glass material with a surface.