JP2021037613A - Surface processing component - Google Patents

Abstract

To provide a surface processing component capable of suppressing generation of frictional heat while maintaining proper cutting force as an elastic grindstone, maintaining quality of a surface of an object to be processed; also to provide a surface processing component which can be used as a seal peeling component for peeling a seal from a surface while suppressing damage formation of a surface of a peeling object.SOLUTION: A surface processing component is assembled with a surface processing part 10 having a peripheral surface 14 becoming a surface processing face at a tip of a rod-like shaft 20, wherein the surface processing part 10 is formed by fastening a binding material having rubber elasticity to the tip of the shaft 20, is provided with, on a peripheral surface 14, a plurality of grooves 11 extending in a direction crossing with a face vertical to the shaft 20, and a straight line connecting between both ends of the groove 11 in the circumferential direction (arrow T direction ) is at a position apart from a bottom 13 of the groove 11.SELECTED DRAWING: Figure 2

Description

The present invention relates to a surface-processed member, and specifically, is used as a grindstone for grinding or polishing the surface of a work piece or a seal peeling member for peeling a seal from the surface of a work piece.

Conventionally, there is known an elastic grindstone with a shaft in which an elastic grindstone (rubber grindstone) in which abrasive grains are dispersed in a binder having rubber elasticity is attached to a shaft. The elastic grindstone with a shaft is extremely useful because the binder has rubber elasticity, so that good workability and a uniform and dense polished surface can be realized.

In an elastic grindstone with a shaft, frictional heat is generated when the surface of the work piece (work surface) is ground and polished. If the work piece is hard or has a large degree of processing, it is necessary to make contact for a long time, so that a large amount of frictional heat is likely to be generated. There is a concern that the generation of large frictional heat may cause problems such as burning of the work piece and loss of shape.

As a method of suppressing the burning of the work piece, a method of processing using a grindstone using a hard binder can be mentioned. By changing the binder to a hard material, the grinding power increases, the amount of polishing per unit time increases, and it becomes possible to process in a short time, so it is possible to suppress the burning of the work piece. it can.

Further, as a method for dealing with the problem of frictional heat, a flap wheel-shaped grindstone or a non-woven fabric type grindstone can be used. Flap wheel-shaped grindstones and non-woven fabric-type grindstones have less heat storage in the grindstone itself, can suppress the generation of frictional heat, and can suppress the temperature of the work piece from becoming high.

However, when the binder is changed to a hard material, the machined surface (worked surface) of the work piece is likely to be roughened or the work piece is likely to be deeply scratched. If the work piece is deeply scratched, it is necessary to add a new process for removing the scratches, which may lead to complicated work.

In addition, flap wheel-shaped grindstones and non-woven fabric type grindstones have a short life due to the nature of the grindstone, and sparks and dust are generated during processing, so it is necessary to pay attention to ignition. Further, it takes time and cost to make the grindstone into a structure like a flap wheel shape because it requires relatively labor and skill. Further, in the case of a non-woven fabric having pores in the grindstone, the grinding force is remarkably reduced, so that the processing time becomes significantly long.

On the other hand, it is required to remove the sticker from the object to which the sticker is attached (hereinafter, referred to as "object to be peeled off"). Examples of the object to be peeled off include inner and outer panels of vehicles such as automobiles and railways, inner and outer panels of transport aircraft such as aircraft and ships, inner and outer walls of various buildings, signboards, and the like. The sticker attached to the object to be peeled off is required to have a strong adhesive force that does not easily peel off while it is being attached, but when trying to peel it off, the strong adhesive force makes it easy to peel off. Can't. Therefore, if the seal is forcibly peeled off, the surface of the object to be peeled off may be damaged.

Jikkai Sho 63-176065

Therefore, the present invention aims to solve the above problems. Specifically, the present invention generates frictional heat while maintaining an appropriate grinding force as an elastic grindstone and maintaining the quality of the surface to be machined. One object of the present invention is to provide a surface-processed member that can be used as an elastic grindstone with a shaft that can suppress the above. Another object of the present invention is to provide a surface processing member that can be used as a seal peeling member for peeling a seal from the surface while suppressing damage to the surface of the object to be peeled.

The above object is achieved by the following invention. That is, the surface-processed member of the present invention is a surface-processed member having a surface-processed portion having a peripheral surface serving as a surface-processed surface at the tip of a rod-shaped shaft.
The surface processed portion is formed by fixing a binder having rubber elasticity to the tip of the shaft.
A plurality of grooves extending in a direction intersecting the plane perpendicular to the axis are provided on the peripheral surface.
A straight line connecting both ends in the circumferential direction of the groove is located at a position separated from the bottom of the groove.

In the present invention, the surface-processed portion has the shape of the peripheral surface so that the surface to be processed is separated from the bottom of the groove when the peripheral surface is brought into contact with the surface to be processed. Is preferable.
Further, in the present invention, it is preferable that the groove extends in the same direction as the shaft.

In the present invention, the surface processed portion may have any shape selected from the group consisting of a columnar shape, a substantially cylindrical shape, a conical shape, a substantially conical shape, a truncated cone shape, and a substantially truncated cone shape. it can.
Further, in the present invention, the ratio (D / C) of the groove depth D to the peripheral length C of the peripheral surface is preferably in the range of 6 / 100,000 to 16/100.

In the present invention, it is preferable that the peripheral surface is provided with four or more grooves at equal intervals.
Further, in the present invention, the space between the adjacent grooves has a curved surface shape that is convex outward in the radial direction of the peripheral surface, and the radius of curvature R of the curved surface shape is within the range of 0.2 to 3 mm. It is preferable to have.

Further, in the present invention, the groove has wall portions rising from the bottom to the peripheral surface on both sides in the circumferential direction of the bottom.
It is preferable that the angle formed by the wall portions on the adjacent sides in the adjacent grooves is in the range of 2 to 90 °.

The surface-processed member of the present invention may be used as a grindstone for grinding or polishing the surface of a work piece.
Further, in the surface processing member of the present invention, an object having a seal on the surface is used as an object to be processed.
It may be used as a seal peeling member for peeling the seal from the surface of the work piece.

According to the present invention, it is possible to provide a surface-processed member capable of suppressing the generation of frictional heat while maintaining an appropriate grinding force and maintaining the quality of the surface to be processed when used as an elastic grindstone. .. Further, according to the present invention, when used as a seal peeling member, the seal can be peeled from the surface while suppressing damage to the surface of the object to be peeled.

It is a front view of the surface processing member of embodiment which is an example of the surface processing member of this invention. It is sectional drawing in the direction perpendicular to the axial direction of the surface processing member of an embodiment, and is the sectional view | CC sectional drawing in FIG. It is an enlarged sectional view which shows the peripheral surface of the surface processing part in FIG. 2 and the vicinity thereof. It is sectional drawing in the direction perpendicular to the axial direction in the surface processing member of the modification. It is sectional drawing in the direction perpendicular to the axial direction in the surface processing member of another modification. (A) is a front view showing the surface-processed member of the embodiment, and (b) is a front view showing the surface-processed member of the modified example. (A) is a front view showing a surface-processed member of a modified example, and (b) is a front view showing a surface-processed member of the modified example. (A) is a front view showing a surface-processed member of another modified example, and (b) is a front view showing a surface-processed member of the modified example. It is a graph which shows the result of the transition of the work material temperature at the time of polishing processing in an Example and a comparative example.

Hereinafter, the present invention will be described in detail with reference to embodiments. The present invention is not limited to the following embodiments. Within the scope of the present invention, the following embodiments are appropriately modified or improved based on ordinary knowledge of those skilled in the art without departing from the spirit of the present invention.

In the present invention, the surface-processed member can be used as an elastic grindstone with a shaft for grinding or polishing the surface of the work piece (hereinafter, simply referred to as "using a grindstone"), and a seal is attached to the surface. It refers to a member that can also be used as a seal peeling member for peeling a seal from the surface of a work piece (hereinafter, simply referred to as "peeling use").

As a result of diligent research by the present inventors, the surface of the work piece is both used as an elastic grindstone with a shaft for grinding or polishing the surface of the work piece and as a seal peeling member for peeling the seal from the surface of the work piece. It is known that the preferable conditions for the processed member are common in many cases (particularly the shape conditions).

FIG. 1 is a front view of the surface processing member of the embodiment which is an example of the surface processing member of the present invention.
The surface processing member 1 of the present embodiment is formed by attaching a surface processing portion 10 having a peripheral surface to be an abrasive surface to a shaft 20.

The surface processed portion 10 is made of a binder having rubber elasticity. By using a binder having rubber elasticity, the surface of the work piece can be processed so as not to be too rough. In particular, in the case of peeling use, by forming the surface processed portion 10 made of a binder having rubber elasticity, it is possible to peel off the seal from the surface while suppressing damage to the surface of the object to be peeled off.

When a grindstone is used, the surface-processed portion 10 is a member in which abrasive grains are dispersed in a binder having rubber elasticity, and is generally called an elastic grindstone, a rubber grindstone, or the like. Even in the case of peeling use, it is better to use a surface processed portion 10 in which abrasive grains are dispersed in a binder having rubber elasticity, so that the peelability of the seal is excellent.

Examples of the binder that can be used for the surface processed portion 10 include synthetic rubber, natural rubber, thermoplastic resin, and thermosetting resin, and there is no particular limitation, and any one of these can be selected. , Or two or more may be selected and mixed and used. Among these, synthetic rubber and natural rubber are preferable.

The rubber hardness of the binder to be used is preferably in the range of JIS / A50 to JIS / D80 when the surface processed portion 10 is formed using the binder. When the rubber hardness in the state of the surface processed portion 10 is within the range of JIS / A50 to JIS / D80, a high processing rate and high stability of polishing can be realized when using a grindstone, and peeling is used. In the case of, high seal peelability can be realized. If the rubber hardness is less than JIS / A50, the grinding ability and peeling ability may be insufficient, while if it exceeds JIS / D80, the work piece will be familiar to the surface (work surface). It tends to get worse.

The specific gravity of the surface processed portion 10 is preferably in the range of ^{1.5 to 5.0 g / cm 3.} If the specific gravity is too small, there is a risk of damage due to a decrease in grinding ability and peeling ability and a decrease in coupling force, and if it is too large, there is a risk of damage when used at high rotation speeds, which are not preferable. In order to adjust the specific gravity of the surface processed portion 10 to an appropriate range, the specific gravity of the material to be used may be adjusted, and it is particularly preferable to adjust the specific gravity of the binder.

Abrasive grains that can be used in the surface processed portion 10 include aluminum oxide (alumina), silicon carbide, silicon oxide (silica), chromium oxide (chromium trioxide), cerium oxide, boron nitride (CBN), zirconia, and alumina-zirconia. Examples include system composites, ceramic materials, single crystal diamonds, polycrystalline diamonds, emery powder and the like. These abrasive grains can be used alone or in combination of two or more. The type and combination of abrasive grains to be used may be appropriately selected according to the conditions such as grinding and polishing and the material of the workpiece.

In the surface processed portion 10 of the present invention, the mass ratio (β / α) of the abrasive grains (β) to the binder (α) is preferably in the range of 0.1 to 3. If the mass ratio is too small, the grinding force may decrease and the original capacity of the elastic grindstone may be insufficient. If the mass ratio is too large, the grinding force may become too high and scratches may occur. The probability may be high.

The diameter of the surface processed portion 10 varies depending on various conditions such as the purpose of use of the surface processed member 1, the material of the surface processed portion 10, and the degree of load of polishing, grinding or peeling, but is approximately 3 to 49 mm. It is selected from the range of. The length of the surface processed portion 10 in the axial direction is selected from a range of approximately 4 to 50 mm, although it varies depending on various conditions such as the purpose of use of the surface processed member 1.

The shaft 20 is a rod-shaped body made of a material such as metal, for example, stainless steel, iron, and aluminum, and is a member that serves as a rotating shaft during polishing, grinding work, or peeling work. During polishing, grinding work, or peeling work, the surface processing portion 10 that rotates with respect to a load that brings the peripheral surface of the surface processing portion 10 into contact with the processing surface (work surface) of the work piece. Sufficient strength is required to continue to support.

The thickness of the shaft 20 varies depending on various conditions such as the material of the shaft 20, the purpose of use of the surface processing member 1, the material and outer diameter of the surface processing portion 10, and the degree of load of polishing, grinding or peeling. , Approximately selected from the range of 2.34 to 10 mm.

FIG. 2 shows a cross-sectional view of the surface processing member 1 of the present embodiment in the axial direction and the vertical direction. The cross-sectional view is a cross-sectional view showing a CC cross section in FIG. As shown in FIGS. 1 and 2, the surface processed portion 10 is coaxially fixed to the tip of the shaft 20, and a plurality of ridges 12 project radially from the peripheral surface thereof. In the present embodiment, the number of the protrusions is 12, and they are arranged at equal intervals in the circumferential direction.

In the surface processing member 1 of the present embodiment, the shaft 20 rotates around the central axis O in the direction of arrow T, for example, and the surface processing portion 10 also rotates accordingly, so that the peripheral surface serving as the abrasive surface rotates. At this time, the tip of the ridge 12 in the surface processed portion 10 comes into contact with the surface to be processed. That is, as the "surface processed surface" ("abrasive surface" when using a grindstone, "peeling surface" when peeling is used), the tip portion of the ridge 12 comes into contact with the surface to be machined. Therefore, the "peripheral surface to be the surface processed surface" referred to in the present invention is a cylindrical region connecting the tip portions of the ridges 12 that actually abut on the surface to be processed (reference numeral 14 is attached in FIG. 2). It is a virtual cylinder represented by a circle.). Hereinafter, the cylindrical region will be referred to as "peripheral surface 14".

The surface-processed member 1 of the present embodiment has a shape in which the ridges 12 project from the peripheral surface (not the peripheral surface 14 but the circle on the extension of the portion marked with the reference numeral 13 in FIG. 2). Looking at the surface 14 as a reference, the groove 11 is provided on the peripheral surface 14. That is, in the interpretation according to the present invention, the state of the peripheral surface of the surface processed portion 10 in the present embodiment is a state in which a plurality of grooves 11 extending in the same direction as the shaft 20 are provided on the peripheral surface 14. And each groove 11 has a bottom 13.

FIG. 3 shows an enlarged cross-sectional view of the peripheral surface 14 of the surface processed portion 10 in FIG. 2 and its vicinity thereof. As shown in FIG. 3, a line L connecting both ends of the groove 11 in the circumferential direction with a straight line is located at a position separated from the bottom 13 of the groove 11 by D. In other words, the depth of the groove 11 is D, which is a positive number.

If the depth of the groove 11 is a positive number D, a gap will be formed between the surface to be processed and the bottom 13 when the peripheral surface 14 is brought into contact with the surface to be processed. Therefore, in the polishing or grinding operation, even if the peripheral surface 14 is continuously brought into contact with the surface to be processed, heat is radiated from the gap and the frictional heat between the surface to be processed and the peripheral surface 14 is dissipated. Therefore, the generation of frictional heat can be suppressed.

Further, since it is not necessary to perform processing on the surface processed portion 10 to improve workability such as grinding force such as changing the binder and abrasive grains, it is possible to suppress excessive grinding of the surface to be processed. When a grindstone is used, an appropriate grinding force as an elastic grindstone can be maintained, and when a grindstone is used, an appropriate seal peelability can be maintained, and the quality of the surface to be processed can be maintained. Further, since it does not have a special shape like a flap wheel-shaped grindstone or a non-woven fabric type grindstone, it has excellent molding suitability, low cost, and a decrease in grinding force and peeling force is suppressed.

Note that FIG. 2 of Patent Document 1 discloses a surface processing member (elastic grindstone with a shaft) in which a plurality of ridges 4 protrude radially from the peripheral surface. The peripheral surface shape of the surface processed portion disclosed in the document also seems to be such that the straight line connecting the vertices of the adjacent ridges 4 is separated from the bottom of the groove 5 between the ridges 4. However, as described in (Structure) between lines 7 to 20 on page 2 of Patent Document 1, the height of the ridges is only 0.1 to 0.2 mm, and the pitch of the ridges is 1.5 to 1.5. Considering other conditions such as 1 mm and a diameter of 10 mmφ of the grindstone body 2, the straight line connecting the vertices of the adjacent ridges 4 is completely separated from the bottom of the groove 5 between the ridges 4. Absent. The straight line intersects the bottom of the groove 5. That is, FIG. 2 of Patent Document 1 is an exaggerated height of the ridge 4, and does not fall into the category of the present invention.

The ratio (D / C) of the depth D of the groove 11 to the peripheral length C of the peripheral surface 14 is preferably in the range of 6 to 100,000 to 16/100, and is preferably 3/100 to 11 /. It is more preferably in the range of 100. If the depth D of the groove 11 is too shallow, the space for heat dissipation becomes narrow, and there is a concern that the effect of suppressing the generation of frictional heat becomes insufficient. On the other hand, if the depth D of the groove 11 is too deep, there is a high possibility that the grindstone will be damaged or chattered, and the moldability will be greatly reduced, which is not realistic.

As described above, the material of the surface processed portion 10 has a certain degree of elasticity. Therefore, when the peripheral surface 14 is brought into contact with the surface to be processed for polishing or grinding, the ridges 12 are elastic. Deform. Therefore, even when the peripheral surface 14 is brought into contact with the surface to be machined (that is, when the ridges 12 are slightly crushed due to the contact of the surface to be machined), the surface to be machined is formed by the groove 11. The shape of the peripheral surface 14 so as to be separated from the bottom 13 is preferable because the space of the groove 11 can be secured more reliably and a stable heat dissipation effect can be expected. That is, it is preferable that the surface to be machined does not come into contact with the bottom 13 of the groove 11 even when the peripheral surface 14 is brought into contact with the surface to be machined for polishing, grinding or peeling.

The number of grooves 11 is 12 in the examples of FIGS. 1 and 2, but in the present invention, it is preferably 4 or more, and more preferably 5 or more. If the number of grooves is too small, the surface processing member tends to bounce due to a decrease in compatibility with the surface to be processed during surface processing. On the other hand, the upper limit of the number of grooves is preferably 30 or less, and more preferably 24 or less. If the number of grooves is too large, the heat dissipation effect becomes insufficient, the surface processed portion itself tends to store heat, and the temperature may rise easily due to frictional heat.

FIG. 4 shows an example of a surface processing member 1a having five grooves (reference numeral 11a in this example), and FIG. 5 shows a surface processing member having nine grooves (reference numeral 11b in this example). Examples of 1b are shown respectively. Here, FIGS. 4 and 5 are cross-sectional views of the surface-processed members 1a and 1b of the modified example in the direction perpendicular to the axial direction, respectively, and are cross-sectional views of the same parts as in FIG. Similar to the embodiment, the surface-processed members 1a and 1b of these modified examples are formed by attaching surface-processed portions 10a and 10b having peripheral surfaces 14a and 14b to be surface-processed surfaces to the shafts 20a and 20b.

In the example of FIG. 4 in which the number of grooves 11a is 5, and in the example of FIG. 5 in which the number of grooves 11b is 9, as shown in the respective drawings, the circumferential direction Ta of the grooves 11a and 11b , The straight lines La and Lb connecting both ends of the Tb (the vertices of the protrusions 12a and 12b) are at positions separated from the bottoms 13a and 13b of the grooves 11a and 11b, and the surface processing according to the present invention. It is clear from the drawings that this is an example of a member.

The grooves 11 are preferably arranged at equal intervals. If the intervals between the grooves 11 are random or uneven, the surface to be processed after surface processing tends to be non-uniform, and the wear of the surface-processed portion tends to be uneven. Further, the shapes (including the depth and width) of the plurality of grooves 11 are preferably the same. If the shapes of the grooves 11 are non-uniform with each other, the surface to be machined after surface processing tends to be non-uniform, and the wear of the surface-processed portion tends to be uneven.

The space between the adjacent grooves 11 has a curved surface shape that is convex outward in the radial direction of the peripheral surface 11, that is, a ridge 12 having a curved surface shape at the top is formed as in the example of the present embodiment. It is preferable to have. Since the top portion forms a ridge having a curved surface shape, the compatibility with the surface to be processed at the time of surface processing is improved.

The radius of curvature R of the curved surface shape at this time is preferably in the range of 0.05 to 3 mm, and more preferably in the range of 1 to 2 mm. If the radius of curvature R is too small, the effect of improving the familiarity by providing the curvature becomes insufficient, and there is a concern that the surface-processed member tends to bounce. On the other hand, if the radius of curvature R is too large, the heat dissipation effect becomes insufficient, the surface processed portion itself tends to store heat, and the temperature may rise easily due to frictional heat.

The groove 11 has wall portions 15x and 15y rising from the bottom 13 to the peripheral surface 14 on both sides of the bottom 13 in the circumferential direction. The angle A formed by the wall portions 15x and the wall portions 15y on the adjacent grooves 11 on the adjacent sides is preferably in the range of 2 to 90 °, and preferably in the range of 10 to 45 °. More preferably, it is in the range of 15 to 30 °. If the angle A formed is too small, the strength is lowered and there is a risk of breakage, and if it is too large, the effective depth may not be maintained and the effect may be diminished, which are not preferable.

Although the surface-processed member of the present invention has been described above with reference to preferred embodiments, the surface-processed member of the present invention is not limited to the configuration of the above-described embodiment. For example, in the above embodiment, the shape of the surface processed portion 10 has been described by taking a columnar shape as an example, but the shape of the surface processed portion is not limited to this in the present invention, and is substantially cylindrical or conical. , It may have various shapes such as substantially conical shape, truncated cone shape and substantially truncated cone shape.
6 to 8 show front views of the surface-processed members of the modified examples of the present invention having different shapes of the surface-processed portions.

FIG. 6A is a front view showing the surface-processed member of the embodiment described above, and FIG. 6B is a front view showing the surface-processed member of the modified example. The surface-processed member shown in FIG. 6 (a) has a columnar shape of the surface-processed portion, and FIG. 6 (b) shows a shape in which the outer diameter gradually increases from both ends in the axial direction toward the central portion (so-called drum). It is a modification of the shape) and is included in the concept of "substantially columnar" referred to in the present invention.

FIG. 7A is a front view showing a surface-processed member of another modified example, and FIG. 7B is a front view showing a surface-processed member of the modified example. The surface-processed member shown in FIG. 7 (a) has a conical surface-processed portion, and FIG. 7 (b) shows a shape in which the outer diameter on the central side from both ends in the axial direction is increased (thickened) (so-called). It is a modification of mushroom-shaped) and is included in the concept of "substantially conical" in the present invention.

FIG. 8A is a front view showing a surface-processed member of another modified example, and FIG. 8B is a front view showing a surface-processed member of the modified example. The surface-processed member shown in FIG. 8 (a) has a truncated cone shape, and FIG. 8 (b) shows a shape in which the outer diameter on the central side from both ends in the axial direction is increased (thickened). It is a modification, and is included in the concept of "substantially truncated cone" in the present invention.
The surface-processed members shown in FIGS. 6 to 8 are all modifications of the present invention as long as they meet the other requirements of the present invention.

Further, the surface-processed members of the embodiments and modifications described above are described with reference to an example in which a plurality of grooves extend in the same direction as the shaft, but the present invention is not limited to this, and a plurality of grooves are provided. The groove may be provided so as to extend in a direction intersecting the direction perpendicular to the axis. Therefore, for example, the groove may be provided at an angle to the shaft or may be provided in a spiral shape.

In any of the modifications, the various configurations and preferred embodiments described in the above-described embodiments can be applied as they are. However, the modified examples having different outer diameters in the axial direction may be considered by applying various configurations and preferred embodiments in the above-described embodiment at the center position in the axial direction.

In addition, those skilled in the art can appropriately modify the surface-processed member of the present invention according to conventionally known knowledge. As long as the modification still has the constitution of the present invention, it is, of course, included in the category of the present invention.

Hereinafter, the present invention will be specifically described based on Examples, but the present invention is not limited to these Examples.
A: Example in the case of using a grindstone In the case of using a grindstone, the following materials were used for the surface processed portion.
Abrasive grains: Normal abrasive grains (WA120 CM43, manufactured by Fujimi, average particle size 90 μm, specific gravity 3.91 g / cm ³ , material: alumina)
-Binding material: Synthetic rubber (JSR1502, manufactured by Japan Synthetic Rubber Co., Ltd., rubber hardness JIS / A 60, specific gravity 1.5 g / cm ³ )

The mixture was mixed so that the mass ratio (β / α) of the abrasive grains (β) to the binder (α) was 1/2, and kneaded according to a conventional method as a material for the surface processed portion. The rubber hardness of this surface-processed portion was JIS · A 90, and the specific gravity was 2.3 g / cm ³ .
Using the material of this surface-processed portion, a surface-processed portion having the shape shown below is formed at the tip of a shaft having a diameter of 3 mm and a length of 40 mm with a SUM material to obtain surface-processed members of Examples and Comparative Examples. It was.

The shape of the surface processed portion in each surface processed member of Examples and Comparative Examples is as follows.
[Comparative Example 1]
In Comparative Example 1, a surface-processed member having a columnar surface-processed portion having a diameter of 10 mm (a peripheral length of the peripheral surface of 31.4 mm) and a length of 20 mm was manufactured.

[Example 1]
In Example 1, a surface-processed member having a surface-processed portion similar to the shape shown in FIG. 4 was manufactured. Specifically, the peripheral length Ca of the peripheral surface 14a is 31.4 mm, the axial length is 20 mm, the number of grooves 11a parallel to the shaft 20a is 5, and the depth Da of the grooves 11a is 0. 05 mm (ratio of depth Da of groove 11a to circumference Ca of peripheral surface 14a (Da / Ca) is 628), radius of curvature Ra at the top of ridge 12a is 0.5 mm, from bottom 13a to peripheral surface 14a A surface processing member having a surface processing portion having a shape such that the angle Aa formed by the rising wall portion 15xa and the wall portions 15ya is 100 ° was manufactured.

[Example 2]
In Example 2, a surface-processed member having a surface-processed portion similar to the shape shown in FIG. 5 was manufactured. Specifically, the peripheral length Cb of the peripheral surface 14b is 31.4 mm, the axial length is 20 mm, the number of grooves 11b parallel to the shaft 20b is 9, and the depth Db of the grooves 11b is 0. 66 mm (the ratio of the depth Db of the groove 11b to the peripheral length Cb of the peripheral surface 14b (Db / Cb) is 47.6), the radius of curvature Rb at the top of the ridge 12b is 0.5 mm, and the peripheral surface from the bottom 13b. A surface processing member having a surface processing portion having a shape such that the angle Bb formed by the wall portion 15xb rising up to 14b and the wall portions 15yb is 96.7 ° was manufactured.

[Example 3]
In Example 3, a surface-processed portion similar to the shape shown in FIGS. 1 to 3 was manufactured. Specifically, the peripheral length C of the peripheral surface 14 is 31.4 mm, the axial length is 20 mm, the number of grooves 11 parallel to the shaft 20 is 9, and the depth D of the grooves 11 is 0. 78 mm (the ratio (D / C) of the depth D of the groove 11 to the peripheral length C of the peripheral surface 14 is 40.3), the radius of curvature R of the top of the ridge 12 is 0.5 mm, and the peripheral surface from the bottom 13 A surface-processed member having a surface-processed portion having a shape in which an angle formed by the wall portion 15x and the wall portion 15y rising from 14 is 86 ° was manufactured.

[Evaluation test]
In order to evaluate the polishability of the work material (workpiece) and the heat generation during polishing for each of the obtained surface-processed members of Examples 1 to 3 and Comparative Example 1, the actual work material for testing was used. An evaluation test was conducted to polish the surface.

<Polishing conditions>
-Work material: A cube with a length of 50 mm, a width of 50 mm, and a thickness of 30 mm, and the material is stainless steel (SUS630).
・ Polishing equipment: Nakanishi grinder (ESPERT500)
・ Rotation speed: 30,000 rpm (rotation / minute)
-Pressing angle against the work material: The angle formed by the work material and the shaft of each surface processing member is 15 °.
・ Pressing load: 500g weight with the tip of the surface processing member pressed ・ Temperature sensor mounting position: The sensor is inserted so that the sensor is located approximately 10mm below the center of the polished surface (heat generation). Only during sex tests).

<Abrasity test>
The mass of the work material and the surface-processed member before polishing was measured, and after polishing for 30 seconds under the above conditions, the mass of the work material and the surface-processed member was measured again. The changes in the mass of the work material and the surface-processed member before and after polishing were determined, and the mass change (polishing amount) of the work material was used as the test result of the polishability, and the mass change (wear amount) of the surface-processed member was used as the wear resistance test result. The results are shown in Table 1 below.

<Fever test>
Using the surface-processed members of Examples 1 to 3 and Comparative Example 1, the work material was polished for 40 seconds under the above conditions. At that time, the temperature of the work material was recorded every 5 seconds, and the temperature transition was observed. The results are shown in the graphs in Table 2 and FIG. 9 below.

※上記表中の単位は℃（経過時間を除く）

* Units in the above table are ° C (excluding elapsed time)

(A: Consideration of Examples in the case of using a grindstone)
Compared to the grindstones of Comparative Example 1, the surface-processed members of Examples 1 to 3 have a slower heating rate than the grindstones of Comparative Example 1, although the polishing amount is the same. Therefore, according to the surface-processed members of Examples 1 to 3, it can be seen that the generation of frictional heat is suppressed while maintaining an appropriate grinding force as an elastic grindstone and maintaining the quality of the surface to be processed. ..

B: Example in the case of peeling use In the case of peeling use, the following materials were used as the material of the surface processed portion.
・ Abrasive grains: Cerium oxide (Unicer 820, manufactured by Universal Photonics Far East Inc., average particle size 1.3 μm, specific gravity 5.5 g / cm ³ , material: cerium oxide)
-Binding material: Synthetic rubber (JSR1502, manufactured by Japan Synthetic Rubber Co., Ltd., rubber hardness JIS / A 60, specific gravity 1.5 g / cm ³ )

The mixture was mixed so that the mass ratio (β / α) of the abrasive grains (β) to the binder (α) was 100/10, and kneaded according to a conventional method as a material for the surface processed portion. The rubber hardness of this surface-processed portion was JIS A70, and the specific gravity was 1.6 g / cm ³ .
Using the material of this surface-processed portion, a surface-processed portion having the shape shown below is formed at the tip of a shaft having a diameter of 3 mm and a length of 40 mm with a SUM material to obtain surface-processed members of Examples and Comparative Examples. It was.

The shape of the surface processed portion in each surface processed member of Examples and Comparative Examples is as follows.
[Comparative Example 2]
In Comparative Example 2, a surface-processed member having a disk-shaped surface-processed portion having a diameter of 50 mm (a peripheral length of the peripheral surface of 157 mm) and an axial length of 10 mm was manufactured.

[Example 4]
In Example 4, a surface-processed member having a surface-processed portion having a gear-shaped outer circumference was manufactured. Specifically, it has the following shape.
-Peripheral length Cb'(corresponding to the length Cb of the peripheral surface 14b in FIG. 5): 50 mm
・ Axial length: 10 mm
-Number of grooves parallel to the shaft: 9-Groove depth Db'(corresponding to the groove 11b depth Db in FIG. 5): 6.8 mm
(Ratio of the depth Db'of the groove 11b to the circumference Cb' of the peripheral surface 14b (Db'/ Cb'): 6.8 / 6.3)
The angle formed by the two wall portions rising from the bottom of the groove to the peripheral surface (corresponding to the angle Bb formed by the wall portion 15xb rising from the bottom 13b to the peripheral surface 14b in FIG. 5 and the wall portions 15yb): 57.9 °
-Central angle of the arc along the peripheral surface at the top of the ridges on both sides of the groove: 20 °

[Example 5]
In Example 5, a surface-processed member having a surface-processed portion similar to the shape shown in FIG. 5 was manufactured. Specifically, the peripheral length Cb of the peripheral surface 14b is 50 mm, the axial length is 10 mm, the number of grooves 11b parallel to the shaft 20b is 9, and the depth Db of the grooves 11b is 3.5 mm ( Ratio of depth Db of groove 11b to circumference length Cb of peripheral surface 14b (Db / Cb): 3.5 / 5.5 ), radius of curvature Rb at the top of ridge 12b is 0.5 mm, from bottom 13b A surface processing member having a surface processing portion having a shape such that the angle Bb formed by the wall portion 15xb rising on the peripheral surface 14b and the wall portions 15yb is 96.7 ° was manufactured.

[Evaluation test]
For each of the surface-processed members of Examples 4 to 5 and Comparative Example 2 obtained, a seal was attached for a test in order to evaluate the seal peelability of the work material (workpiece) and the amount of wear after the peeling process. An evaluation test was conducted in which the work material was actually peeled off.

<Peeling test conditions>
-Work material: A cube with a length of 30 mm, a width of 50 mm, and a thickness of 50 mm, and the material is an aluminum alloy (A7075) with a sticker attached to the surface.-Seal: Nitto Denko Co., Ltd. packaging craft tape KC-100N (yellow) ) Is cut into 8 mm width and 25 mm length. ・ Polishing device: Nakanishi grinder (ESPERT500)
・ Rotation speed: 8000 rpm (rotation / minute)
-Pressing angle against the work material: The angle formed by the work material and the shaft of each surface processing member is 0 ° (that is, the peripheral surface of the surface processing portion linearly contacts the surface of the work material).
-Pressing load: 100 g weight with the surface-processed member pressed-Movement area of the surface-processed part: Movement of the contact surface of the surface-processed part with a total of 30 mm stretched 2.5 mm on both sides in the longitudinal direction of the seal. It was designated as an area. Draw end mark lines at both ends of the moving area.
-Movement speed of the surface processed part: One reciprocation in 5 seconds between the end marks at both ends of the movement area

<Seal peelability test>
First, the mass of the surface processed member was measured. In addition, a sticker was carefully attached to the surface of the work material, and the whole was strongly pressed with a finger from above the sticker to prevent it from being easily peeled off, and then left to stand for 24 hours.

After that, the shaft of the surface processing member is rotationally driven to bring the contact surface of the surface processing portion into contact with one end of the end mark on the surface of the work material, and the peeling process is performed until the seal is completely peeled off under the above conditions. It was. At this time, the time required for peeling was used as the evaluation result of the seal peelability.
Further, after the peeling process, the mass of the surface processed member was measured again. The change in the mass of the surface-processed member before and after the peeling process was determined, and the mass change (amount of wear) of the surface-processed member was used as the wear resistance test result. The results are shown in Table 3 below.

(B: Consideration of Examples in the case of peeling use)
It can be seen that the surface-processed members of Examples 4 to 5 all have a shorter time required for peeling and are excellent in seal peelability as compared with the peeling member of Comparative Example 2. In particular, according to the surface-processed member of Example 4 having the gear-shaped surface-processed portion, it can be seen that the amount of wear of the surface-processed member is remarkably suppressed.

The surface-processed member of the present invention can be used in various polishing or grinding steps when a grindstone is used. In particular, it is useful when hard materials such as aluminum, iron, stainless steel, brass, ceramics, glass and titanium, which have to be polished for a long time, are used as members to be processed. It is particularly useful when aluminum, iron, stainless steel, titanium and the like are used as members to be processed.

1,1a, 1b: Surface processing members 10, 10a, 10b: Surface processing portions 11, 11a, 11b: Grooves 12, 12a, 12b: Convex 13, 13a, 13b: Bottom 14, 14a, 14b: Peripheral surface 15x, 15y, 15xa, 15ya, 15xb, 15yb: wall parts 20, 20a, 20b: shaft

Claims (10)

A surface processing member having a surface processing portion having a peripheral surface to be a surface processing surface at the tip of a rod-shaped shaft.
The surface processed portion is formed by fixing a binder having rubber elasticity to the tip of the shaft.
A plurality of grooves extending in a direction intersecting the plane perpendicular to the axis are provided on the peripheral surface.
A surface processing member characterized in that a straight line connecting both ends in the circumferential direction of the groove is located at a position separated from the bottom of the groove. The claim is characterized in that the surface-processed portion has a shape of the peripheral surface so that the surface to be processed is separated from the bottom of the groove when the peripheral surface is brought into contact with the surface to be processed. Item 2. The surface processing member according to item 1. The surface processing member according to claim 1 or 2, wherein the groove extends in the same direction as the shaft. Claims 1 to 3 characterized in that the surface processed portion has any shape selected from the group consisting of a columnar shape, a substantially cylindrical shape, a conical shape, a substantially conical shape, a truncated cone shape, and a substantially truncated cone shape. The surface processing member according to any one of. Claims 1 to 4, wherein the ratio (D / C) of the groove depth D to the peripheral length C of the peripheral surface is in the range of 6 / 100,000 to 16/100. The surface processing member according to any one. The surface processing member according to any one of claims 1 to 5, wherein the peripheral surface is provided with four or more grooves at equal intervals. The space between the adjacent grooves has a curved surface shape that is convex outward in the radial direction of the peripheral surface, and the radius of curvature R of the curved surface shape is within the range of 0.2 to 3 mm. The surface processing member according to any one of claims 1 to 6. The groove has walls rising from the bottom to the peripheral surface on both sides in the circumferential direction of the bottom.
The surface-processed member according to any one of claims 1 to 7, wherein the angle formed by the wall portions on the adjacent sides close to each other in the adjacent grooves is in the range of 2 to 90 °. The surface processing member according to any one of claims 1 to 8, wherein the surface processing member is used as a grindstone for grinding or polishing the surface of a work piece. An object with a sticker on the surface is used as a work piece.
The surface processed member according to any one of claims 1 to 8, wherein the surface processed member is used as a seal peeling member for peeling the seal from the surface of the work piece.

Images