JP2001277140A - Polishing tool and method of polishing using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polishing tool capable of using a soft polishing sheet same as a hard polisher, and a polishing method using it. SOLUTION: The polishing tool has a grooved polishing sheet sticking area 3 formed by projections 4 and 4 from the front face to the back face of a holder 1 including its end 12, with the polishing sheet 2 stuck to the sticking area 3. In use, the end of the holder 1 with the polishing sheet 2 stuck thereto is brought into contact with a material to be polished, and the material is polished at a certain angle ranging from vertical to horizontal angles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing tool used for lapping such as surface polishing of a mold and other various polishing operations, and a polishing method using the same. The present invention relates to a polishing tool using a flexible polishing sheet fixed and held by a holder and a polishing method using the same.

[Prior art]

2. Description of the Related Art Abrasive cloth is a useful abrasive material that has been generally used in polishing operations, and in which abrasive grains are fixed and held on a substrate (paper, cloth) with an adhesive. It is.
Also, abrasives using synthetic resin sheets or films instead of paper and cloth are often used as the base material. Since these polishing sheets have flexibility, it is difficult to bring the polishing sheet into close contact with the surface to be polished when performing polishing manually, and thus there is a problem that the working efficiency is poor.

On the other hand, in recent years, a stick formed by mixing an inorganic fiber such as a glass fiber, an alumina fiber, a boron fiber, and a silicon carbide fiber with a thermosetting resin has been developed. Has become. Since this abrasive is hard, there is an advantage that even when polishing is performed manually, there is no problem as in the above-mentioned abrasive sheet, and the working efficiency can be improved. However, the use range and use of this material are limited because the inorganic fiber as a raw material is expensive and the molding operation is complicated.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a polishing tool which can use a soft polishing sheet in the same manner as a hard polishing material, and a polishing method using the same.

[0005]

A polishing tool according to the present invention for solving the above-mentioned problems comprises a holder having a groove-shaped polishing sheet attachment region formed from a front surface including a front end to a back surface, and the polishing sheet attachment device. And a polishing sheet attached to the region.

In another polishing tool of the present invention, there is provided a holder having a polishing sheet sticking region formed from a front surface including a front end to a rear surface, and having projections provided on both sides of at least a part of the region. And a polishing sheet to be attached to the sheet attachment area.

In the polishing method of the present invention, a polishing sheet is stuck to a polishing sheet sticking area of the holder, and then the tip of the holder is brought into contact with a material to be polished to be polished at an arbitrary angle from vertical to horizontal. The material is polished.

[0008] Since the polishing tool of the present invention is used by attaching a polishing sheet to the polishing sheet attaching region of the holder,
It can be used in the same manner as a conventional hard abrasive formed into a stick. Further, since the abrasive sheet sticking area is formed in a groove shape, or a projection is provided on at least a part of both sides of the abrasive sheet sticking area, even if the abrasive sheet is worn, the groove or the protrusion is formed. Can serve as a positioning guide so that a new abrasive sheet can be attached to the same position as the worn abrasive sheet.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a polishing tool according to this embodiment. This polishing tool comprises a stick-shaped holder 1 and a polishing sheet 2 adhered on a polishing sheet attaching area 3 formed at the tip of the holder 1. The holder 1 is made of a hard material such as hard plastic, hard rubber, wood, metal, ceramics, and two or more kinds of composite materials.

As shown in FIGS. 3 (a), 3 (b) and FIG. 4, the polishing sheet sticking area 3 is formed from the front surface 11 of the holder 1 to the back surface 13 via the tip 12 and the area 3
The protrusions 4 are provided on both sides of the whole. By these projections 4, 4, the abrasive sheet attachment region 3 has a groove shape in cross section (see FIG. 2), and the abrasive sheet 2 is attached in the groove 10.

Further, the polishing sheet sticking area 3 of the holder 1
The main body 14 except for the above serves as a holding portion for holding the holder 1 by hand. In FIG. 3B and FIG. 4, reference numeral 15 denotes a plurality of ridges provided on the back surface of the holder 1 for preventing slippage.

As shown in FIG. 2, the polishing sheet sticking area 3
Height of the protrusions 4, 4 provided on both sides of the
The depth of the groove 10 needs to be smaller than the thickness of the polishing sheet 2. When the height of the projections 4 is larger than the thickness of the polishing sheet 2, the projections 4 As a result, polishing by the polishing sheet 2 cannot be performed. In particular,
The height of the projections 4, 4 is 0.3 to more than the thickness of the polishing sheet 2.
It is preferably about 1 mm smaller. Incidentally, the projections 4 and 4 shown in FIGS. 1 to 4 have a height of about 0.2 mm and a width of about 0.5 mm. The interval between the projections 4 and 4, that is, the width of the groove 10 is appropriately determined according to the width of the polishing sheet 2 to be used.
Usually, it may be about 2 to 20 mm.

The back surface 13 of the holder 1 including the polishing sheet sticking area 3 is formed of an inclined surface whose thickness gradually increases from the front end 12 to the rear. Thereby, the thickness of the distal end 12 is reduced, so that a narrow portion can be easily polished. Further, the tip 12 of the holder 1 is formed in a curved surface shape that is continuous from the front surface 11 to the back surface 13 (see FIG. 4). This can prevent the surface to be polished from being damaged, and also allows the holder 1 to be held and polished at an arbitrary angle with respect to the surface to be polished, thereby facilitating the polishing workability.

The abrasive sheet 2 has an adhesive layer 6 on the back surface of the abrasive 5 as shown in FIG.
As shown in (b), a polishing material having an adhesive layer 6 on the back surface of a polishing material 51 via a thickness adjusting material 7 is used. As the former polishing sheet 2, for example, there is a case where a relatively thick polishing material 5 is used, such as a normal polishing cloth made using cloth, paper or the like as a base material. In addition, the latter polishing sheet 2
For example, a case where a relatively thin abrasive 51 (typically, about 0.07 to 0.1 mm thick) such as an abrasive film made using a plastic film as a base material is used, The thickness of the entire polishing sheet 2 is made larger than the projections 4 by interposing the thickness adjusting material 7.

In either case shown in FIGS. 5A and 5B, the abrasive sheet 2 is attached to the abrasive sheet attaching area 3 extending from the front surface 11 of the holder 1 to the back surface 13 via the tip 12. Therefore, it is preferable that the polishing sheet 2 has flexibility and flexibility. Each of the abrasives 5 and 51 has a structure in which abrasive grains are bonded to the above-described base material with an adhesive. Examples of the abrasive grains include super abrasive grains such as diamond and cubic boron nitride, and general abrasive grains such as white random and silicon carbide.

The pressure-sensitive adhesive layer 6 is not particularly limited, and may be formed by applying a pressure-sensitive adhesive to the back surface of the abrasive 5 or the thickness adjusting material 7, or a double-sided pressure-sensitive adhesive tape. Can be used even if it is adhered to the back surface of the abrasive 5 or the thickness adjusting material 7. It is preferable that the adhesive layer 6 has a peelable adhesive strength so that the abrasive sheet 2 can be replaced on the abrasive sheet attachment region 3. As the thickness adjusting member 7, a flexible sheet material or film material such as paper, cloth, plastic sheet or film can be used without any particular limitation.

The width and length of the pressure-sensitive adhesive sheet 2 configured as described above are appropriately determined according to the width and length of the polishing sheet sticking area 3 of the holder 1 to be used, and are not particularly limited. That is, the width of the adhesive sheet 2 may be smaller than the width of the polishing sheet sticking area 3 (that is, the distance between the protrusions 4 and 4), and is not particularly limited. Since the adhesive sheet 2 may be displaced in the width direction during polishing, there is a possibility that such an adverse effect may occur. Therefore, the width is substantially the same as the width of the polishing sheet attachment region 3 or a maximum of 1 mm.
It is preferable to use one that is as small as possible. In addition, the length of the adhesive sheet 2 does not necessarily need to be equal to the length of the polishing sheet sticking region 3 (that is, the distance from the front surface 11 to the back surface 13). May be shorter or longer. According to a preferred embodiment of the present invention, the pressure-sensitive adhesive sheet 2 has a width of about 2 to 15 mm and a length of about 20 mm.
It is used by cutting it into a tape shape of ８０80 mm. Incidentally, the adhesive sheet 2 shown in FIG. 1 has a width of 4 mm and a length of 50 mm.
It is about.

Next, a polishing method using the polishing tool of the present invention will be described. When performing a polishing operation using the polishing tool of the present invention, first, the polishing sheet 2 is attached to the polishing sheet attaching region 3 of the holder 1. At that time, the polishing sheet sticking area 3
The projections 4 provided on both sides of the sheet serve as guides, so that the polishing sheet 2 can be accurately and easily stuck to the sticking area 3.

Next, as shown in FIG. 6, the tip 12 of the holder 1 is brought into contact with the surface of the workpiece 8 and the holder 1 is held by hand at any angle from vertical to horizontal. In this state, the polishing operation is performed by moving the holder 1 back and forth (arrow A in FIG. 6) or laterally (arrow B in FIG. 6). When the holder 1 is moved in the lateral direction for polishing, the polishing sheet 2 is prevented from being displaced by the projections 4 provided on both sides of the polishing sheet attaching area 3.

Since the polishing sheet sticking area 3 having a width smaller than that of the main body 14 is provided at the tip of the holder 1, it is suitable for polishing a mold having a narrow opening such as a deep portion of a rib. . In particular, since the back surface 13 of the polishing sheet sticking area 3 is formed in an inclined shape, polishing of a narrow portion is easy. If holder 1 is laid down with surface 11 down, polishing sheet 2 adhered to attachment region 3 on surface 11 side
Can be polished using the entire surface of the substrate. Similarly, the polishing sheet 2 stuck on the sticking area 3 on the back surface 13 side
Polishing can be performed using the entire surface of the substrate.

In the above description, the projections 4 and 4 are provided on the entire area of the abrasive sheet sticking area 3 so that the abrasive sheet sticking area 3
Is formed in a groove shape, but the protrusions 4 and 4 may be provided only partially or partially in the polishing sheet attaching region 3. In this case, the projections 4 and 4 can serve as positioning guides for the polishing sheet 2 even if the attachment region 3 does not have a groove shape.

The abrasive sheet 2 may be attached only to a part of the abrasive sheet sticking area 3 (for example, only the tip portion 12), or the abrasive sheet 2 may be attached longer than the entire length of the abrasive sheet sticking area 3. You may wear it.

FIGS. 7A and 7B each show another embodiment of the present invention. Holder 1 'shown in FIG.
In this example, the abrasive sheet sticking area 3 is formed by grooves 10 'instead of the projections 4 and 4 described above. The holder 1 ″ shown in FIG. 7 (b) has projections 4 ′, 4 ′ having a low height and a groove 1 ′.
0 "is used in combination to form the abrasive sheet sticking area 3. In any case, it can be used in the same manner as in the above-described embodiment.

[0024]

According to the polishing tool of the present invention, the polishing sheet is used by attaching the polishing sheet to the polishing sheet attaching area including the tip of the holder. Polishing can be performed with strong contact. In particular, the use of the holder makes it possible to grind even the deeper and narrower parts that are difficult to grind with a flexible polishing sheet in the past, by using the holder in the same manner as a conventional hard abrasive. Also, even when the abrasive sheet is worn and replaced with a new abrasive sheet, the grooves or projections constituting the abrasive sheet attachment area serve as positioning guides, and the new abrasive sheet is placed at the same position as the original abrasive sheet. Since they can be attached, they can always be operated under the same polishing conditions. For these reasons, the use of the polishing tool of the present invention has an effect that an inexpensive and highly efficient polishing operation becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a polishing tool according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIGS. 3A and 3B are a plan view and a rear view of the holder, respectively.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIGS. 5A and 5B are cross-sectional views each showing an example of a polishing sheet.

FIG. 6 is a perspective view showing a use state of the polishing tool according to the present invention.

FIGS. 7A and 7B are cross-sectional views each showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holder 2 Abrasive sheet 3 Abrasive sheet sticking area 4 Protrusion 10 Groove 11 Front surface 12 Tip 13 Back surface 14 Holder body

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuhide Sato 381-1 Nakago, Matsuzaki, Inzai-shi, Chiba F-term in JGC Corporation (reference) 3C063 AA10 AB07 BG06 BH07 EE32

Claims (8)

[Claims] An abrasive tool comprising: a holder having a groove-shaped abrasive sheet attachment region formed from a front surface including a front end to a back surface; and a polishing sheet attached to the abrasive sheet attachment region. 2. The polishing tool according to claim 1, wherein projections for forming grooves are provided on both sides of the polishing sheet attaching region. 3. The polishing tool according to claim 1, wherein a thickness of the polishing sheet is larger than a groove depth of the polishing sheet attaching region. 4. The polishing tool according to claim 1, wherein the polishing sheet has an adhesive layer on a back surface. 5. The polishing sheet according to claim 1, wherein at least one of the front and rear surfaces of the holder constituting the polishing sheet attaching region is an inclined surface having a thickness which gradually increases from a front end to a rear side.
The polishing tool according to any one of the above. 6. The polishing tool according to claim 1, wherein a tip of said holder is formed in a curved shape continuous from a front surface to a rear surface. 7. A holder having an abrasive sheet attachment region formed from the front surface including the front end to the back surface and having projections provided at least on both sides of at least a part of the region, and being attached to the abrasive sheet attachment region. A polishing tool comprising: a polishing sheet. 8. After the abrasive sheet is attached to the abrasive sheet attachment area of the holder according to any one of claims 1 to 7, the tip of the holder is brought into contact with a material to be polished, and the holder is arbitrarily adjusted from vertical to horizontal. A polishing method characterized by polishing a workpiece at an appropriate angle.