JPH0538668A - Method and device for polishing with endless belt - Google Patents

Abstract

PURPOSE:To enhance the durability by suppressing deterioration of an endless polishing belt resulting from heat emission involved in the grinding process; and accomplish surface polishing in compliance strictly with the profile of a work to be polished. CONSTITUTION:An endless polishing belt arrangement concerned is constructed in double structure from an outer belt for polishing 2 and an inner belt 4 for suppressing heat emission and giving the specified shape, and a work to be polished W is pressed to the polishing surface of the polishing belt 2 to undergo the polishing process. With the work W the profile of the heat suppressing and shaping belt 4 is embodied in female form so as to generate fit contact with the profile of the work W. Thereby the friction heat generated can be dispersed to the two belt 2, 4, and at the same time, the work W eventually having rough surface be polished over its whole surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus having an endless polishing belt and a polishing method using the apparatus, and at the time of polishing, it is possible to suppress deterioration of the endless polishing belt due to heating and to improve durability, The present invention relates to a polishing apparatus having an endless polishing belt for performing surface polishing according to a sectional shape of a material to be polished by operation, and a polishing method by the apparatus.

[0002]

2. Description of the Related Art A conventional polishing apparatus having an endless polishing belt has an endless polishing belt which is laid and rotated around its surface as a polishing surface, and a polishing base is disposed in proximity to the inside of this endless polishing belt. The polishing is performed by pressing the material to be polished against the endless polishing belt at the portion of the polishing base, or by pressing the polishing base so as to press the material to be polished from the inside of the endless polishing belt.

[0003]

However, in this apparatus, since the endless polishing belt moves at high speed while contacting both the polishing base and the material to be polished, the endless polishing belt causes high heat due to frictional heat. Occurs, and the high heat deteriorates the endless polishing belt, shortening the life of the endless polishing belt, forcing frequent replacement, and significantly lowering the efficiency of polishing work.

On the other hand, in the case of this apparatus, since the material to be polished is simply pressed by pressing the endless polishing belt around the rotating state, the material to be polished is No problem if the surface is flat,
If the cross-sectional shape has a curved line or other complicated irregularities, only the most protruding portion is polished, and the rest is not polished at all.

In view of the above-mentioned problems and the like, the present invention suppresses deterioration of the endless polishing belt due to heating during polishing, improves durability, and processes a material to be polished by a simple operation. It is an object of the invention to provide a polishing apparatus having an endless polishing belt capable of polishing a surface according to a sectional shape.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to an endless polishing belt which is hung and rotated around a surface as a polishing surface, and the rotation speed of the endless polishing belt which is laid around the inside of the endless polishing belt and is equal to or higher than the rotation speed of the endless polishing belt. , An endless heat-suppressing molding belt arranged to rotate slower than that, or pressing the heat-suppressing molding belt from the inside to the outside of the heat-suppressing molding belt to press the endless polishing belt to the material to be polished together with the heat-suppressing molding belt, Alternatively, the above-mentioned problems are solved by a polishing apparatus having an endless polishing belt composed of a material to be polished and a pressing base body that is pressed via an endless polishing belt and a heat suppression molding belt.

Further, a sheet-shaped polishing material is pasted on a portion of the material to be polished to be polished, and the surface on which the polishing material is pasted is looped and rotated to form an endless heat-restraining molding of an appropriate thickness. By pressing and polishing against the belt surface, the heating suppression molding belt surface is formed into a female shape in contact with the cross-sectional shape of the material to be polished, and then the polishing material is attached to the material to be polished. On the one hand, and on the other hand, the endless polishing belt whose surface is a polishing surface so as to surround the suspended heating suppression molding belt is arranged so as to circulate and rotate, and the material to be polished, or this material And material with the same cross-sectional shape as the endless polishing belt and heat suppression molding belt.
Pressing against the polishing surface of the endless polishing belt as a stack of two sheets, the heating suppression molding belt, at the same rotation speed of the endless polishing belt, or by a polishing method by rotating slower than that, to solve the above problems It is a thing.

[0008]

In the polishing apparatus having the endless polishing belt according to the present invention, the pressing base is provided inside the heat suppression forming belt by the double structure belt in which the endless polishing belt is arranged on the outside and the endless heat suppressing molding belt is arranged on the inside. From the end to the outer surface of the endless polishing belt and the heat suppressing molding belt by fixing the pressing base by pressing the endless polishing belt against the material to be polished together with the heat suppressing molding belt. The material to be polished is polished by pressing it against the pressing base.

At this time, the rotation speed of the heat-suppressing forming belt is made to be the same as or slower than the rotation speed of the endless polishing belt. Between the endless polishing belt and the material to be polished and the heat between the heat-suppressing forming belt and the pressing base, and the heat-suppressing forming belt. The frictional heat between the pressing base and the pressing base is a separate body even though the endless polishing belt and the material to be polished are in contact with each other, so that it is difficult to conduct to the endless polishing belt side, and the frictional heat applied to the endless polishing belt is The friction heat between the endless polishing belt and the material to be polished is almost the only heat.
Therefore, frictional heat that is almost half of the frictional heat applied to the conventional endless polishing belt is only applied.

Further, the rotation speed of the heat-restraining molding belt is
When the rotation speed of the endless polishing belt is set lower than that of the endless polishing belt, frictional heat between the endless polishing belt and the material to be polished is generated by the difference in speed, but the frictional heat between the heat-suppressing forming belt and the pressing substrate is correspondingly increased. The generation of frictional heat between
The frictional heat applied to the endless polishing belt is almost the same as the frictional heat generated due to the speed difference between the endless polishing belt and the heat suppression molding belt, and the frictional heat between the endless polishing belt and the material to be polished. Therefore, the frictional heat applied to the conventional endless polishing belt is less than the frictional heat applied to the conventional endless polishing belt.

On the other hand, when the surface of the material to be polished has a curved cross section or other complicated irregularities, a sheet-shaped polishing material is attached to the portion to be polished of the material to be polished. By pressing and polishing the surface on which this abrasive material has been applied to the endless heat-restraining molding belt surface that is looped and rotated, the cross-sectional shape of the heat-restraining molding belt surface is processed into the material to be polished. Formed into a female shape that comes into contact with the cross-sectional shape, and then the abrasive material attached to the material to be polished is peeled off, while the surface is polished so as to surround the suspended heating suppression molding belt. The endless polishing belt is placed around the endless polishing belt, and the material to be polished, or a material having the same cross-sectional shape as this material, is laminated as an endless polishing belt and a heat suppression molding belt. Pressed against the polishing surface, the heating suppression forming belt, equal to the rotational speed of the endless abrasive belts, or polished by rotating slower than that.

Then, when pressed, the endless polishing belt is bent following the cross-sectional shape of the heat-restraining molding belt,
The entire surface of the material to be polished is polished.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

That is, reference numeral 1 shown in the drawing is a polishing apparatus, which is composed of an endless polishing belt 2, a heat suppression molding belt 4, and a pressing base 8.

The endless polishing belt 2 has a surface as a polishing surface, for example, four hanging rollers 3 as shown in FIG.
It is formed in a rectangular shape by means of a driving device such as a motor (not shown) that rotates any one of the four hanging rollers 3.

The heat-restraining molding belt 4 is endless, and inside the endless polishing belt 2, for example, as shown in FIG.
It is wound in a triangle by three hanging rollers 5, and any one of the three hanging rollers 5 is driven and rotated by a driving device such as a motor (not shown) like the endless polishing belt 2. It is formed so that it can rotate.

The rotation speed of the heat-restraining molding belt 4 is the same as or slower than the rotation speed of the endless polishing belt 2.

Further, the pressing base 8 is formed so as to be arranged inside the heating suppressing molding belt 4 and then pressed outward by the pressing device 9, and the material W to be polished is endlessly polished together with the heating suppressing molding belt 4. It is formed so as to press the belt 2.

In this case, the pressing base 8 may be fixed and the material W to be polished may be pressed against the pressing base 8 via the endless polishing belt 2 and the heat-suppressing molding auxiliary 4 for polishing.

Then, as shown in FIG. 1, the inside of the stretched heat-restraining molding belt 4 is tensioned by a tension-adjusting device 6 so as to tension the heat-restraining molding belt 4. Two rollers 7 are arranged so that the tension adjusting roller 7 pushes the heat-restraining molding belt 4 to the outside to eliminate slack.

On the other hand, there is a looping form between the endless polishing belt 2 and the heat-restraining molding belt 4 as shown in FIG.

For example, FIG. 3A shows the same form as that of the above-mentioned embodiment, and FIG. 3B shows the endless polishing belt 2 and the heat-restraining molding belt 4 both laid around in a rectangular shape. FIG. 3 (C) shows the endless polishing belt 2 and the heat suppression molding belt 4 both of which are looped around in a triangle. Then, FIG. 3 (D) shows that both sides sandwiching the portion where the pressing base 8 is pushed are hung by the common laying rollers 3 and then laid by different laying rollers 3 and 5, respectively. is there.

As shown in FIG. 2, the polishing apparatus 1 thus formed has a pressing base 8 with a double structure belt having an endless polishing belt 2 on the outside and an endless heat suppression molding belt 4 on the inside. To press the endless polishing belt 2 against the material W to be polished together with the heat suppression molding belt 4 by moving the heat suppression molding belt 4 from the inside toward the outside or to fix the pressing base 8 though not shown. Then, the polishing target material W is polished by pressing the polishing target material W from the endless polishing belt 2 and the heat suppression molding belt 4 toward the pressing base 8.

Then, when the rotation speed of the heating suppression forming belt 4 is set to be the same as the rotation speed of the endless polishing belt 2, no frictional heat is generated between the endless polishing belt 2 and the heating suppression forming belt 4, and the endless polishing belt 2 does not generate frictional heat. The frictional heat between the polishing belt 2 and the material W to be polished and the frictional heat between the heat-suppressing molding belt 4 and the pressing base 8 are two. The friction heat of the endless polishing belt 2
And the material W to be polished are in contact with each other, but are not easily conducted to the endless polishing belt 2 side, and the frictional heat applied to the endless polishing belt 2 is almost the same as the material W to be polished. Only frictional heat between and. Therefore, only about half of the friction heat applied to the conventional endless polishing belt 2 is applied.

When the rotation speed of the heating suppression molding belt 4 is set lower than that of the endless polishing belt 2,
The frictional heat between the endless polishing belt 2 and the material W to be polished is generated by the difference in speed, but the frictional heat between the heating suppression molding belt 4 and the pressing base 8 is also reduced accordingly. After all, the frictional heat applied to the endless polishing belt 2 is almost the same as the frictional heat generated due to the speed difference between the endless polishing belt 2 and the heat suppression forming belt 4 and between the endless polishing belt 2 and the material W to be polished. It becomes the friction heat of. Therefore, the frictional heat applied to the conventional endless polishing belt is less than the frictional heat applied to the conventional endless polishing belt.

On the other hand, when the surface of the material W to be polished has a curved cross section or other complicated irregularities, first, as shown in FIG. 4A, the material W to be polished is polished. The sheet-shaped polishing material 10 is attached to a portion to be formed, and the surface on which the polishing material 10 is attached is pressed against the surface of the endless heat-suppressing molding belt 4 having an appropriate thickness that is looped and rotated to polish. As a result, the cross-sectional shape of the surface of the heating suppression molding belt 4 is formed into a female shape that contacts the cross-sectional shape of the material W to be processed, and then the polishing material 10 attached to the material W to be polished is peeled off. On the other hand, on the other hand, the endless polishing belt 2 whose surface is a polishing surface is arranged so as to circulate and rotate so as to surround the suspended heating suppression molding belt 4, and as shown in FIG. The material W to be polished, or Shape the same material W, pressed against the polishing surface of the endless abrasive belt 2 as two-ply endless grinding belt 2 and the heating suppression forming belt 4, heating suppression forming belt 4
Is rotated at the same speed as or slower than the rotation speed of the endless polishing belt 2 for polishing.

Then, when the material W to be polished is pressed, the endless polishing belt 2 is bent according to the cross-sectional shape of the heat suppression molding belt 4, and the entire surface of the material W to be polished can be polished. ..

At this time, as shown in FIGS. 5 (A) and 5 (B), the shape of the heat-restraining molding belt 4 is formed so that the surface is uneven, and the convex portion 4a is polished and molded by the polishing material 10. In this case, since the endless polishing belt 2 and the recessed portion 4b of the heating suppression molding belt 4 are not in contact with each other, the friction heat generated between the endless polishing belt 2 and the heating suppression molding belt 4 and the material W to be polished are The frictional heat with the endless polishing belt 2 is dissipated in the portion of the recess 4b which is not in contact with the frictional heat, so that the deterioration of the endless polishing belt 2 is prevented.

Needless to say, the present invention is not limited to the above-mentioned embodiments.

[0030]

According to the present invention constructed as described above, the endless polishing belt 2 is hung and rotated around the surface as a polishing surface, and the rotation speed of the endless polishing belt 2 is laid around the inside of the endless polishing belt 2. The endless heat-restraining molding belt 4 arranged to rotate the same or slower than that, and the material W to be polished together with the heat-restraining molding belt 4 by pressing the heat-restraining molding belt 4 from the inside to the outside. Since the endless polishing belt 2 is pressed against the endless material, or the material W to be polished is composed of the endless polishing belt 2 and the pressing base 8 which is pressed via the heat suppression molding belt 4, as described in the above-mentioned embodiment. In addition, when polishing the material W to be polished, when the rotation speed of the heating suppression molding belt 4 is set to be the same as the rotation speed of the endless polishing belt 2, the endless polishing belt 2 and the heating suppression molding belt 4 are separated from each other. In this case, no frictional heat is generated, and the frictional heat between the endless polishing belt 2 and the material W to be polished and the frictional heat between the heating suppressing forming belt 4 and the pressing base 8 become two. The frictional heat between the belt 4 and the pressing base 8 is a separate body although the endless polishing belt 2 and the material W to be polished are in contact with each other, so that it is difficult to be conducted to the endless polishing belt 2 side, and the endless polishing is performed. The frictional heat applied to the belt 2 is substantially only the frictional heat between the endless polishing belt 2 and the material W to be polished. Therefore, only about half of the friction heat applied to the conventional endless polishing belt 2 is applied.

When the rotation speed of the heating suppression molding belt 4 is set lower than that of the endless polishing belt 2,
The frictional heat between the endless polishing belt 2 and the material W to be polished is generated by the difference in speed, but the frictional heat between the heating suppression molding belt 4 and the pressing base 8 is also reduced accordingly. After all, the frictional heat applied to the endless polishing belt 2 is almost the same as the frictional heat generated due to the speed difference between the endless polishing belt 2 and the heat suppression forming belt 4 and between the endless polishing belt 2 and the material W to be polished. It becomes the friction heat of. Therefore, the friction heat applied to the conventional endless polishing belt is less than the friction heat applied to the conventional endless polishing belt.

As a result, the frictional heat applied to the endless polishing belt 2 is extremely reduced as compared with the conventional polishing apparatus having the endless polishing belt, and the life of the endless polishing belt 2 can be greatly extended, and as a result, the endless polishing belt 2 can be extended. The number of times the polishing belt 2 is replaced is reduced, the work efficiency is improved, and the amount of the endless polishing belt 2 used is reduced, so that the cost can be reduced.

On the other hand, when the surface of the material to be polished W has a curved cross section or other complicated irregularities, the sheet-shaped polishing material 10 is attached to the portion to be polished of the material to be polished W. Incidentally, the cross-sectional shape of the surface of the heat-suppressing molding belt 4 is obtained by pressing the surface to which the abrasive material 10 is stuck onto the surface of the endless heat-suppressing molding belt 4 which is looped and rotated and has an appropriate thickness. Is formed into a female shape that comes into contact with the processed cross-sectional shape of the material to be polished W, and then the polishing material 10 attached to the material to be polished W is peeled off, while, on the other hand, the suspended heating suppression molding is performed. The endless polishing belt 2 whose surface is a polishing surface is arranged so as to surround the belt 4 so as to circulate and rotate, and the material W to be polished, or the material W having the same cross-sectional shape as this material, is supplied to the endless polishing belt. 2 and heat suppression molding Pressed against the polishing surface of the endless abrasive belt 2 as two ply belt 4, heating suppression forming belt 4
Is rotated at a speed equal to or slower than the rotation speed of the endless polishing belt 2 to polish the material W to be polished.
When pressed against, the endless polishing belt 2 is bent according to the cross-sectional shape of the heat suppression molding belt 4, and the entire surface of the material W to be polished can be polished. Therefore, unlike the conventional one in which only the most projecting surface is polished, even the material W to be polished having a curved cross section or other complicated unevenness can be entirely polished. The application can be greatly expanded.

As described above, according to the present invention, during polishing, deterioration of the endless polishing belt due to heating is suppressed and durability is improved, and the cross-sectional shape of the material to be polished is processed in a simple operation. The surface can be polished, and
Since it has a simple structure, it has various excellent effects such as being provided at low cost.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an embodiment of the present invention.

FIG. 2 is a schematic plan view showing a polished state of the embodiment of the present invention.

FIG. 3 is a schematic view showing an embodiment of a looping structure of each endless polishing belt and a heat suppression forming belt in the present invention.

FIG. 4 is a side sectional view showing a step of the method for polishing a curved surface according to the present invention.

FIG. 5 is an enlarged perspective view of a main part of the heating suppression molding belt.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Polishing apparatus 2 Endless polishing belt 3 Hanging roller 4 Heating suppression molding belt 4a Convex part 4b Recess 5 Hanging roller 6 Tension adjusting machine 7 Tension adjusting roller 8 Pressing base 9 Pressing device 10 Polishing material W Polishing material

Claims (2)

[Claims] 1. An endless polishing belt which is hung and rotated around a surface as a polishing surface, and which is hung around the inside of the endless polishing belt to rotate at a speed equal to or slower than the rotation speed of the endless polishing belt. An endless heat-suppressing molding belt having an appropriate thickness and an inner end of the heat-suppressing molding belt pressed outward to press the heat-suppressing molding belt together with the endless polishing belt against the material to be polished, or A polishing apparatus having an endless polishing belt, characterized in that the material is composed of an endless polishing belt and a pressing base body that is pressed via a heat suppression molding belt. 2. An endless heat-restraining molding of an appropriate thickness in which a sheet-shaped polishing material is attached to a portion of the material to be polished to be polished, and the surface on which the polishing material is attached is looped and rotated. By pressing and polishing against the belt surface, the heating suppression molding belt surface is formed into a female shape in contact with the cross-sectional shape of the material to be polished, and then the polishing material is attached to the material to be polished. On the one hand, and on the other hand, the endless polishing belt whose surface is a polishing surface so as to surround the suspended heating suppression molding belt is arranged so as to circulate and rotate, and the material to be polished, or this material 2) of the endless polishing belt and the heat suppression molding belt.
Polishing with an endless polishing belt characterized by pressing it against the polishing surface of the endless polishing belt as a stack and rotating the heat suppression molding belt at the same rotation speed as or slower than the rotation speed of the endless polishing belt. Polishing method by machine.