JPS6247662B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a honing stone.

Honing mandrels and other similar devices with abrasive wheel assemblies attached to them have been in use for many years, and numerous styles and constructions of such devices are known, some of which Some use a single radially adjustable wheel assembly, and some use multiple circumferentially spaced wheel assemblies, one or more of which are honing. A grinding wheel assembly is used which is freely adjustable in the radial direction during operation to maintain the wheel assembly in pressure contact with the inner surface of the workpiece being honed. Many known wheel assemblies and wheel assembly motion devices have been invented and used in the past, such as U.S. Patents 18763 to Sunnen; 1902194; 1904336;
1946041; 1982836; 2040281; 2815615 and
Examples include those disclosed in No. 3378962. Some of these known constructions have a wheel member fixedly attached to a wheel holder member, which is attached in various ways to a mandrel or other similar device. According to known constructions, as the wheel wears, the wheel assembly, usually including its attachment means, is discarded or the old wheel is removed and a new wheel installed. Both of these processes are uneconomical and expensive to the user, especially when the wheel assembly includes expensive metal backing members and support devices. The structure of the present invention includes a reusable main wheel holder and a replaceable wheel assembly attached to the holder that includes an inexpensive backing member to which one or more wheels are coupled. The aim is to overcome the above-mentioned uneconomical and high costs by proposing a new replaceable honing wheel assembly construction and installation. The replaceable grinding wheel assembly of the present invention is constructed in a novel manner that uses simple equipment requiring only relatively readily available hand tools for attachment and removal, and that the replaceable grinding wheel assembly and main It is attached to the main wheel assembly in such a way as to prevent loosening with the wheel holder while at the same time ensuring a positive driving connection therebetween. When the abrasive wheel of the present device becomes worn and requires replacement, the replaceable abrasive wheel assembly can be quickly and easily separated from the main abrasive wheel holder and replaced with another similar abrasive wheel assembly. As a result, diseconomies to the user are minimized and, due to the low cost of replaceable wheel assemblies, conventional backing members, which are time consuming and expensive and require special equipment and materials, are minimized. It is made uneconomical to reinstall the grinding wheel. Also, since the backing material to which the grinding wheel is attached is inexpensive and gets damaged with use, there is no attempt to reuse the backing material by removing the worn grinding wheel and replacing it with a new one. There is little loss in abandoning it.

Accordingly, a primary object of the present invention is to provide a relatively inexpensive, disposable grinding wheel assembly that is mounted on a main wheel holder.

A second objective is to reduce the cost of restoring the honing device to like-new honing performance.

A third object is to provide a new means for attaching a replaceable wheel assembly to a main wheel holder.

A fourth purpose is to make it uneconomical to reinstall the grindstone on the grindstone holder device currently in use.

The fifth purpose is to propose a new configuration of a replaceable grindstone assembly and a main grindstone holder to which it is attached.

A sixth objective is to reduce the time and effort required to mount the honing wheel assembly onto the wheel holder to restore the honing device to like-new working condition.

A seventh purpose is to prevent the grinding wheel assembly from being installed in an incorrect position on the main grinding wheel holder.

An eighth object is to allow the replaceable grinding wheel assembly to be attached to the main grinding wheel holder using simple and readily available hand tools.

A ninth objective is to reduce the cost of maintaining the honing mandrel in working condition.

These and other objects of the invention will become apparent from a consideration of the following detailed description, which discloses some preferred embodiments of the apparatus of the invention, taken in conjunction with the accompanying drawings.

Referring to the attached drawings according to the reference numbers, the first
The figure shows an assembly 20 that includes a main wheel holder 22 and a replaceable wheel assembly 24 mounted thereon.
The wheel assembly 24 includes a wheel mounting member 26, which is typically made from a relatively inexpensive material such as die-cast zinc, die-cast aluminum, or other similar material, on which one or more honing wheels, e.g. A honing stone 28 is attached. Although the honing wheel 28 may be joined to the wheel mounting member 26 in a variety of ways, the preferred method is to ensure that the parts to be joined are in place, such as by using a jig or the like. While secured, the grinding wheels are bonded together with adhesive.

The main wheel holder 22 includes an elongated rectangular plate 30 on which the wheel assembly 24 is mounted, and which has spaced apart mounting members shown as rack members 32, 34 connected thereto adjacent opposite ends thereof. has been done. To accomplish these connections, plate 30 has a pair of spaced holes 36 (FIGS. 3 and 5) with tapered portions 37 adjacent opposite ends thereof.
and FIG. 6), and has rack members 32, 3.
Each of 4 has a reduced diameter cylindrical end portion 38 extending into a respective hole 36 and, when so positioned, is connected to said tapered portion 37 by being driven as shown at 40. bind tightly. The rack members 32, 34 are further formed with a plurality of teeth 42 along their corresponding sides, which teeth 42 may be pinions, as described below, placed on a honing mandrel or other similar device. During hot honing work, the grindstone assembly 24
actuated to move the mandrel radially to maintain contact of the grinding wheel against the surface of the workpiece and also when the mandrel is withdrawn from the workpiece or inserted into the workpiece. It functions to retract the whetstone when the grinder is turned.

The plate 30 of the main wheel holder 22 further has a pair of similar holes 44, each shown positioned inwardly from and laterally centered from the holes 36. Holes 44 are used to mount the wheel assembly 24 onto the main wheel holder 24 to establish a strong bond therebetween as will be described below.

Grinding wheel mounting member, that is, backing portion 2 of the grinding wheel assembly 24
6 details are shown in FIGS. 8-12.
Backing member 26, as previously mentioned, is preferably made from an inexpensive material such as die-cast zinc, die-cast aluminum, or other relatively inexpensive material and, when installed, is made from plate 30.
The lower surface 46 that comes into contact with the upper surface of the honing wheel 2
8 has a sloped top surface 48, a surface coupled thereto in the same manner as described above. The upper surface 48 is inclined relative to the lower surface 46 and extends the entire length of the grindstone mounting member 26. An upwardly projecting positioning ridge 50 extends along one side of the top surface 48 along which the honing wheel 28 extends as shown in FIG. The edge of the upper surface 48 opposite from the ridge 50 is then attached to the grinding wheel mounting member 2.
6 to an adjacent slope 52 which extends to a leading or leading edge 54 .

Lower surface 4 of grindstone mounting member 26 made of die-casting
6 has two similar integral tubular portions 56 coupled thereto and extending therefrom as best seen in FIGS. 9, 10 and 11. The part 56
extend from the lower surface 46 a distance slightly less than the thickness of the plate 30 on the main whetstone holder 22, and are spaced apart from each other so as to each extend downwardly to fit within the holes 44 in the plate 30 as shown in FIG. and dimensions are given. Furthermore, each tubular member 56 has a first
A pair of opposed notches 58 are formed extending from the free end as shown in FIGS. 0, 11, and 12. Furthermore, as more clearly shown in FIG. 11, the tubular portion 56 is formed with a cylindrical hole 60 that extends partway through the tubular portion 56 into the body portion of the wheel mounting member 26. There is. When the tubular portions 56 are each positioned in a respective one of the holes 44 in the plate 30, a threaded member, such as a screw 62, is threaded into the tubular portions 56 as shown in FIG. By doing so, pressure is applied by the threads against the tubular members 56 to thread their inner surfaces and enlarge them, so that they exert a lateral force engaging the holes 44. arise. This lends itself to a very strong bond and contributes to a relatively inexpensive construction and an easily and quickly installed and removed arrangement. This means that to replace one of the wheel assemblies 24 on the main wheel holder 22, the assembly 20 must be removed from the mandrel on which it was mounted, and then the two screws 62 removed from the worn wheel assembly 24 must be removed. It is only necessary to remove the assembly 24 from the main wheel holder 22 by extracting it, and to install other similar wheel assemblies using similarly simple procedures. During removal of the worn wheel assembly 24, the tubular portion 5
It may be necessary to tap the ends of the 6's to loosen them, but this is usually not a difficult task.

The main whetstone holder 22 is preferably a relatively expensive component precision manufactured from relatively hard steel.
It is important to the invention that it can be reused. Therefore, the only replaceable parts are a relatively inexpensive backing or wheel mounting member 26 that is easily molded or die cast in mass-produced fashion and that engages and processes the workpiece and is wear-resistant. This is a grindstone assembly 24 including a grindstone 28 itself which is a device part to be used. The abrasive wheel assembly 24, including the backing member and the abrasive wheel, can be mass-produced relatively economically, with the backing member preferably being a relatively soft material as described above and having the tubular portion 56 as previously described. It is made from something that can be expanded by forming a thread in it. The tubular portion 56 has a double notched portion 5.
Although it can be notched as indicated by 8, in some cases such a notch is not needed.
Tubular portion 56 may be provided with a single notch on one side thereof, or alternatively, if desired, may be provided with three or more spaced apart notches similar to notch 58. It is expected that the threads of the screws 62 will cause some damage to the tubular portion 56 when the wheel assembly 24 is secured in place on the main wheel holder 22. This may limit the possibility of repeatedly reusing the same wheel assembly 24 (possibly even reusing the wheel once or twice if necessary), which is considered a disadvantage. It is not allowed. The reason is that it is generally not economical to reuse the wheels on the backing member, and when the wheels in a wheel assembly have been used almost to their limit, the assembly is often no longer suitable for reuse. This is because they are often too worn to be adjusted. Therefore, under normal circumstances, when the grinding wheel assembly 24 is attached to the main grinding wheel holder 2
2, it is not necessary or desirable to reattach the same wheel assembly 24 to the same or another main wheel holder.

The backing portion 26 of the wheel assembly 24 also includes a flange extending downwardly along a side thereof, e.g.
It may optionally have a flange 64 as shown in the Figures and FIG. The flange 64 provides some strength to the wheel assembly 24 and helps prevent warping and bending. These flanges 64 may be positioned to project downwardly in spaced relation to the adjacent side of the main wheel holder to which they are attached as shown in FIG. Such a flange is
Although they are more effective when they extend further across the ends of the wheel assembly 24 than flanges that simply extend along the sides, in most cases such flanges are not necessary.

The dimensions and/or mutual spacing and/or location of the bore 44 and tubular portion 56 may be selected to prevent erroneous installation and improper installation of the wheel assembly on the main wheel holder. For example, it is proposed to offset the position of both holes 44 and their respective tubular portions 56 towards one end of the device to prevent backward mounting of the wheel assembly. flange 64
The position of the side flanges may also be chosen to prevent assembly personnel from accidentally or intentionally mounting the wheel assembly backwards on the main wheel holder.

FIG. 13 shows a modified embodiment 24A of the abrasive wheel assembly 24 configured to support two spaced parallel abrasive wheels 28A. Wheel assembly 24A has a peripheral flange 64 extending around its periphery and surrounding plate 30 of the main wheel holder when the assembly is placed on the plate. The assembly 24A also includes two spaced apart tubular portions 56A which cooperate with the holes 44 in the plate 30 of the main wheel holder, as described above. These tubular portions 56A are notched as desired.
or not formed.

FIG. 14 shows a modified wheel assembly 24A mounted on the main wheel holder 22, including one having a flange 64 extending and surrounding the sides of the main wheel holder 22 in spaced relation thereto. FIG. 3 is a cross-sectional view of the assembly 20A. In this configuration, the plate 30 is disposed in face-to-face contact with one side of the wheel assembly 24A as described above, and the connection between the wheel assembly 24A and the main wheel holder 22 is tapered as described above. The threaded member 62 is attached to the tubular portion 5.
This is done in a similar manner to that used in conjunction with each of the 6A's. Additionally, the main wheel holder 22 includes racks 32, 34 that cooperate with a pinion 66 that is placed on a mandrel, such as a honing mandrel. Pinion 66 is rotated to move assembly 20A radially in the manner previously described.

FIG. 15 shows another modified assembly that is similar to the assembly 20A but differs from the assembly 20A in the manner in which the grinding wheel assembly 24B and the plate 30B are configured and the manner in which they are coupled to each other. assembly 20B is shown. In this modified configuration, the main wheel holder plate 30B has a tapered or beveled opposing edge 68 formed on the inner surface of the flange 64 of the backing member 26B. 70, which is also tapered or beveled. When so engaged, surface 72 of plate 30B and backing member 26
A space is formed between the surface 74 of B and the surface 74 of B. Further, in this configuration, the tubular portion 56B of the backing member 26B is connected to the hole 44 of the plate 30B of the main whetstone holder.
B has a diameter slightly smaller than that of B, so that when screw 62 is tightened using a screwdriver or the like, it pulls backing member 26B down and deflects it, causing said diagonal surfaces 68 and 70 to move relative to each other. The force that causes the cam to move is exerted. In some cases, this combination scheme is advantageous. In the two modified assemblies 20A, 20B, two parallel spaced grinding wheels 28A, 28B are mounted. Also, in Figures 14 and 15,
A circular profile W is shown to represent the cylindrical inner surface of the workpiece being horned by the inventive apparatus. As the cylindrical inner surface is enlarged or as the wheels wear, the pinion 66 may be rotated to move the wheels outward and maintain them in engagement with the inner surface of the workpiece. is necessary.
Similarly, after the honing operation is completed or before the honing mandrel is inserted into the work surface, the pinion 66 is rotated in the opposite direction to retract the wheel assembly so that the honing mandrel is It can be moved into or out of the workpiece.

In FIGS. 16 to 18, the grindstone assembly 2
4 and the main whetstone holder 22, more specifically between the whetstone mounting member 26 and the main whetstone holder 22,
Another means of achieving this combination is shown. In FIG. 16, the coupling means is shown as including a headless set screw 80. In FIG. The set screw 80 has a socket for a wrench, such as one for a hexagonal key wrench, and the leading end portion of the set screw 80 is preferably tapered 82 to facilitate entry into the tubular portion 56. be made into The threads of the set screws 80 are also slightly tapered from end to end, with their diameter maximizing at the trailing end, although this is not required.
When the set screw 80 is screwed into one of the tubular sections 56, it threads itself and simultaneously expands the tubular section 56 outwardly into the bore 44 of the main wheel holder 22, as previously mentioned. closely combined with One advantage of the configuration shown in FIG. 16 is that the set screw 80 does not have a head that in some cases may limit inward movement of the honing assembly on the honing mandrel. This is particularly advantageous in small diameter mandrels, allowing a greater range of radial motion of the wheel assembly without the need to modify the mandrel body to accommodate the screw head.

FIG. 17 illustrates the use of another type of threaded member 86, which also does not protrude from the plate 30 of the main wheel holder, to accomplish the connection. In this case, the threaded member 86 has a tapered head portion 88 that connects the hole 44 in the plate 30 and possibly the hole 60 in the tubular portion 56.
has been slightly modified by being tapered to accommodate the screw head portion 88. In this configuration, the hole 60 is inserted into the tapered portion 90 shortly before the head portion 88 engages the tapered portion of the hole 44.
It is shown tapered at 90 to engage. This causes outward movement or expansion of tubular portion 56 into engagement with hole 44, making the bond between them more solid.

In the configuration shown in FIG.
A ball member such as 4 is forced into the hole 60 of the tubular portion by being pushed into the hole 60. Ball member 94
is large enough to cause tubular portion 56 to expand outwardly into engagement with bore 44 . The penetration depth of the ball member 94 must preferably be selected to maintain an outward pressure against the tubular portion 56 in the area of the groove 58.

FIG. 19 shows the use of a tool 100 having a handle portion 102 and a threaded end portion 104. Threaded end portion 104 may be tapered to facilitate entry of tool 100 into tubular portion 56. The tapered shape of the threaded end portion 104 further causes incremental expansion as the tool 100 is threaded into the bore 44, thereby establishing a tight connection between the tubular portion 56 and the bore 44. obtain. After tool 100 has been used to expand tubular portion 56 and engage it with hole 44, tool 100 is removed by unscrewing and
Inflated tubular portion 56 remains engaged with bore 44 . Handle portion 102 of tool 100
has a relatively short tapered end portion 106 sized to extend to the base of the bore 60 when the tubular portion 56 is coupled to the plate 30; Handle part 1
02 may be tapped or tapped to separate tubular portion 56 from hole 44. This facilitates removal of the worn wheel assembly when installing a new wheel assembly.

20 and 21 further illustrate further steps for coupling a wheel assembly, such as a dual wheel assembly 110 similar to assembly 24A shown in FIGS. 13 and 14, to plate 112 of the main wheel holder. Another method is shown. The plate 112 has one or more holes 1
The bore 114 is cylindrical over a portion of its length and tapered as indicated at 116 over at least a portion of its length.

Grinding wheel assembly 110 has a tubular portion 118 having a cylindrical outer surface that aligns with and fits within bore 114 . Tubular portion 118 is cylindrical throughout most of its length, but has a diameter that is 1 1/2 such that its minimum diameter is adjacent to the free end of tubular portion 118.
It has an inner surface 120 that is tapered or tapered at 22. This is tubular part 1
This means that the tube wall of 18 is thicker at 123 than for the remainder of its length. Grindstone assembly 110
a tubular portion 118 is inserted into the respective hole 114 to couple it to the plate 112 of the main wheel holder;
A tool 124 having a threaded end portion 126 and a right-angled handle portion 128 is then positioned as shown in FIG. In this position, tool 124 is rotated to thread it through hole 120, cutting the thread as it advances, thereby expanding tubular portion 118 outwardly. Further, the tool 124 passes through the tapered thickened end section 123 to extend the section 123 into the tubular section 1.
18. Expand outward one inch from the rest of 18. This causes the thickened end portion 123 to be moved outwardly into the hole 1
14 and creates a positive engagement relationship therewith. This engagement prevents the parts from loosening or disassembling. Also, for the same purpose, hole 11 is provided adjacent to the free end of hole 114.
Although it is possible to provide a step at 4, a tapered engagement is usually preferred as it allows the parts to be separated more easily when replacing the abrasive wheel assembly.

In FIG. 21, the bore 120 is shown enlarged at 130, so that the threaded portion 126 of the tool is inserted into the tubular portion 11 part way through the backing member.
Start cutting the screws at 8. The enlarged hole portion 130 thus acts as a guide for the tool 124, which may be advantageous in some cases and may prevent stresses from building up in the body portion of the backing member. In FIG. 21, the threaded portion 126 of the tool is illustrated as having completely passed through the hole 120. It is clear that when the tool passes through the tapered thickened end section 123 it encounters the greatest resistance to rotation since the diameter of the hole 120 is the smallest and the thickness of the metal is the greatest. . However, as the tool emerges from the thickened end section 123, the pressure required to continue turning the tool suddenly decreases and little or no further expansion of the section 123 occurs. This ensures that the amount of possible expansion of the section 123 is such that the amount of expansion possible without allowing the operator to exert excessive force that could cause the tubular section 118 to break or crack.
This means that it can be precisely controlled and limited as desired.

A major advantage of the configuration shown in Figures 19 and 21 is that the coupling of the wheel assembly to the main wheel holder does not require any screws or other threaded members to remain in the assembly. This is something that can be achieved. Another advantage of the arrangement shown in FIGS. 20 and 21 is that the connection can be made without having to remove the entire assembly from the mandrel to which it is attached. This advantage represents a substantial saving in the time required to change the grinding wheel on the mandrel. The same features described above may be implemented in an assembly having a single wheel or multiple rows of wheels. However, for a single wheel assembly, it is necessary to slightly offset the tubular sections so that they are not located directly beneath the wheel member.

To remove the replaceable wheel assembly shown in FIGS. 20 and 21 from the main wheel holder, one or more separate holes, such as the hole shown at 132 in FIG. 22, are provided in tubular portion 118. assembly 110 at a location remote from one or both of the following. Hole 132 is preferably unthreaded and
The removal tool 124 therefore threads itself. However, hole 132 can be threaded if desired. Hole 132 is threaded with threaded portion 126 of tool 124, and tool 124 is inserted into hole 132.
On rotational entry, the end of the tool impinges on the main wheel holder 112, and thus subsequent rotation provides a force on the main wheel holder 112 in the direction of separating the parts from each other. such hole 13
2 may be placed adjacent each of the tubular portions 118, but in some cases a single centrally located hole may be all that is needed. The same means described above may be used to separate the previously described wheel assemblies from their main wheel holders, but this is in the case of configurations in which the assemblies are first removed from the mandrel before a new wheel assembly is installed. is usually not necessary. This is because tubular portion 56 can be easily accessed when the assembly is removed from the mandrel.

In view of the above, there is provided a new grinding wheel attachment device including a new grinding wheel assembly and a new means for attaching the grinding wheel assembly to a main grinding wheel holder, which achieves all of the objectives and benefits sought therefor. Several different embodiments have been shown and described. However, it is understood that many changes, modifications, variations and other uses and applications of the inventive device are possible and may be expected, and that all such changes, modifications, variations and other uses and applications that do not depart from the spirit and scope of the invention It will be apparent to those skilled in the art that uses and applications are considered to be encompassed by the present invention, which is limited only by the scope of the appended claims.

[Brief explanation of the drawing]

1 is a side view showing a honing wheel assembly made in accordance with the present invention and a main wheel holder therefor; FIG. 2 is a right end view of the structure shown in FIG. 1;
Fig. 3 is a side view showing a partial cross section of only the main whetstone holder portion of the structure shown in Figs. 1 and 2; Fig. 4 is a right end view of the main whetstone holder of Fig. 3; Figure 5 is a top view of only the upper part of the main whetstone holder shown in Figure 3; Figure 6 is a side view, partially in section, of the member shown in Figure 5; Figure 7 is a side view of the part shown in Figure 6; FIG. 8 is a top view of the portion of the replaceable grinding wheel assembly to which the grinding wheel is coupled; FIG. 9 is an end view of the member shown in FIG. 8; FIG. 8 is a right side view of the member shown in FIG. 8; FIG. 11 is an enlarged cross-sectional view taken along line 11-11 of FIG. 8; FIG. 12 is a right side view of the member shown in FIGS. A bottom view of the parts; FIG. 13 is a perspective view of a modified grinding wheel assembly; FIG. 14 is a cross-sectional view of the modified grinding wheel assembly of FIG. 13 mounted on the main grinding wheel holder; FIG. 15 The figure is a cross-sectional view similar to FIG. 14 showing another modified embodiment of the invention; FIGS. 16 to 18 show an arrangement for attaching a replaceable grinding wheel assembly to the main wheel holder; FIG. 19 is a cross-sectional view showing the replaceable grinding wheel assembly attached to the main grinding wheel holder by a special tool; FIG. FIG. 4 is a cross-sectional view of yet another embodiment of an apparatus for attaching a replaceable grinding wheel assembly to a main grinding wheel holder by means that do not require separation from the mandrel on which it is attached, and prior to completion of said means; Fig. 21 is a cross-sectional view showing the assembly of Fig. 20 after the exchangeable grindstone assembly and main grindstone holder have been connected by a tool; Fig. 22 The figures are Figures 20 and 21.
Figure 3 is a cross-sectional view of the illustrated assembly in a position removed from that shown therein; In the drawing, 20 is an "assembly"; 22 is a "main whetstone holder"; 24 is a "whetstone assembly"; 26 is a "whetstone mounting member or backing member"; 28 is a "honing whetstone"; 30 is a "plate" 32 and 34 are "rack members"; 36 is a "hole"; 44 is a "hole"; 56 is a "tubular part"; 58 is a "notch"; 62 is a "screw";
64 is a "flange"; 80 is a "set screw"; 94 is a "ball bearing"; 100 and 124 are "tools".

Claims (1)

[Claims] 1. A mounting device for a honing stone, etc., comprising a main grinding wheel holder comprising a plate member having upper and lower surfaces and at least two spaced apart holes passing through these upper and lower surfaces; The plate member is made of a relatively soft material that undergoes permanent plastic deformation when subjected to a stress, and one of the two surfaces is disposed in contact with one of the upper and lower surfaces of the plate member. a honing stone mounted on the other side of the backing member; and a honing stone provided with the same number of holes in the plate member and inserted into the holes in alignment with the holes in the plate member. a grinding wheel assembly mounted on the plate member having at least two spaced apart tubular members integrally formed on the other side of the backing member; the tubular member and the backing member define a passageway extending through the tubular member and the backing member;
The shape of the outer surface of the spaced apart tubular members is substantially similar to the surface shape of at least a portion of the spaced apart corresponding holes in the plate member, such that all the tubular members are shaped like the outer surfaces of the spaced apart tubular members. The insertion device is insertable into the holes simultaneously such that there is substantial face-to-face contact between the holes and the tubular member, and the insertion device is inserted into each of the tubular members from either end of the tubular member. The tubular members are inserted into the passageways to expand each tubular member in the radial direction and permanently plastically deform the tubular members so as to engage the corresponding holes in the plate member, and the permanent plastic deformation is sufficient to maintain a tight fit between the tubular member and the hole in the plate member even when the insertion device is removed from each tubular member. Features a mounting device. 2. The attachment device according to claim 1, wherein the insertion device is a screwing member, and the threaded portion of the screwing member cuts a thread into the tubular member and at the same time expands the tubular member radially outward. , mounting device. 3. The mounting device according to claim 1, wherein the backing member is made of a metal softer than the plate member. 4. In the attachment device according to claim 1, the tubular member extends from the end where the tubular member is coupled to the backing member to the opposite free end, and the free end is formed with an axially extending notch. an attachment device that facilitates radial expansion of the tubular member when the insertion device is tightly inserted into the tubular member. 5. In the attachment device according to claim 1, the length of the tubular member is shorter than the thickness of the plate member.
Mounting device. 6. The mounting device of claim 1, wherein the backing member is made from die-cast zinc. 7. The attachment device of claim 1, wherein the backing member has an integral flange, the flange extending adjacent at least one side edge of the plate member. 8. In the mounting device according to claim 1, the backing member has a peripheral flange, and the peripheral flange surrounds the side edge of the plate member when the grindstone assembly is attached to the plate member. Mounting device. 9. The attachment device according to claim 1, wherein the other side of the backing member is inclined at an acute angle with respect to the one side of the backing member. 10. The attachment device according to claim 9, wherein a ridge is formed along one side of the other side of the backing member. 11. The mounting device according to claim 2, wherein the threaded portion of the screw fastening member is tapered. 12. In the attachment device according to claim 2, a pair of rack members are attached to the plate member, and the rack members are spaced apart from each other, and the other rack member is located on the opposite side to the one side of the plate member. an attachment device extending outwardly from one side of the plate member, the screwing member having a head and a threaded portion, the head being located on a side of the other side of the plate member. 13. The mounting device according to claim 1, wherein there are two honing stones arranged parallel to each other and spaced apart from each other. 14. The attachment device of claim 1, wherein a pair of parallel toothed members are coupled to and extend outwardly from the plate member. 15. In the attachment device according to claim 1, the hole in the plate member has a portion with an increased diameter;
the increased diameter portion is located on an opposite side of one side of the plate member, and the opening in the tubular member extends through the backing member and has a reduced inner diameter portion; , the reduced inner diameter portion being located near the free end of the tubular member. 16. The attachment device according to claim 15, wherein the insertion device is a screw fastening member, and the threaded portion of the screw member is inserted into an opening passing through the backing member and the tubular member. . 17. The mounting device according to claim 15, wherein the honing stones are a pair of honing stones spaced apart from each other. 18. The attachment device according to claim 1, wherein the insertion device has a headless screw member. 19. The attachment device of claim 1, wherein the insertion device has a spherical member with a diameter slightly larger than the inner diameter of the tubular member. 20 In the attachment device according to claim 1, the hole in the plate member has a tapered portion on the side opposite to the backing member, the tapered portion tapers toward the backing member, and the insertion device An attachment device comprising a threaded member having a tapered head configured to engage a tapered portion of each hole in the plate member. 21 In a mounting device for a honing stone, etc., which has a main whetstone holder, a whetstone assembly, and a screw fastening member, the main whetstone holder has a plate member, and the plate member has a pair of mutually spaced apart holes passing through the plate member. the grinding wheel assembly is mounted on the plate member and has a backing member, at least one grinding wheel member, and a spaced apart tubular member; One side of the member is configured to be disposed close to one side of the plate member, the grindstone member is attached to the other side of the backing member, and the tubular member is attached to the backing member. formed on said one side of said member and further arranged to be aligned with and inserted into said holes in said plate member, said backing member having a peripheral flange, said backing member having a peripheral flange; The flange extends to surround a side edge of the plate member, and the peripheral flange of the backing member and the side edge of the plate member are formed at an angle, and the grinding wheel assembly is mounted on the plate member. the peripheral flange and a side edge of the plate member engage when the peripheral flange and the side edge of the plate member are inserted into the plate member; An attachment device characterized in that the portion threads the interior of the tubular member while simultaneously expanding the tubular member radially outwardly within the hole in the plate member. 22. The attachment device of claim 21, wherein the diameter of the tubular member is smaller than the inner diameter of the corresponding hole in the plate member. 23. A mounting device for a honing stone, etc., comprising a main whetstone holder, a whetstone assembly, and a screw fastening member, wherein the main whetstone holder has a plate member, and the plate members are spaced apart from each other passing through the plate member. a hole; the abrasive wheel assembly is mounted on the plate member and has a backing member, at least one honing stone, and a tubular member spaced apart from each other; the backing member one side of the plate member is configured to be placed in contact with one side of the plate member, the honing stone is mounted on the other side of the backing member, and the tubular member is attached to the one side of the backing member. formed on one side of the plate member and further arranged to be aligned with and inserted into the holes in the plate member, the holes in the plate member having a portion of increased diameter;
the increased diameter portion is located on the other side of the plate member, while the opening of the tubular member extends through the backing member and has a reduced inner diameter portion;
the reduced inner diameter portion is located near the free end of the tubular member, the threaded member has a threaded portion that is threaded through the backing member and into the tubular member; the threaded portion threads the interior of the tubular member while simultaneously expanding the tubular member radially outwardly into engagement with the hole in the plate member; the backing member can be separated from the plate member by engaging a screw member with the hole, the hole being provided at a position remote from the tubular member; Mounting device. 24. The attachment device according to claim 23, wherein the hole in the backing member is threaded.