JP2557340Y2 - Flow-through grinding wheel - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding wheel, and more particularly, to a fluid-flow grinding wheel which performs processing while flowing a grinding fluid between a workpiece and a grinding wheel.

[0002]

2. Description of the Related Art Conventionally, CBN, diamond,
A grinding wheel is used in which abrasive grains such as aluminum oxide and silicon carbide are combined with a predetermined binder such as resinoid, metal, vitrified and the like. Generally, in such a grinding process, in order to efficiently obtain a good ground surface, or to weld the work material to the grinding wheel, clogging of the grinding wheel, seizure, etc., a grinding fluid is used. Processing is performed while flowing between a grinding surface of a grinding wheel and a work material.

[0003]

[Problem to be solved by the invention] However, in the method of supplying the grinding fluid from the outside by a nozzle or the like toward the grinding point where the machining is being performed, the grinding fluid that is actually involved in the grinding is sufficiently supplied with the grinding fluid. Difficult to supply. In particular, when a grinding wheel having a wide grinding surface is used, the supply of the grinding fluid to the inside of the contact portion between the grinding surface and the work material is hardly performed.

Therefore, for example, Japanese Utility Model Application Laid-Open No. 62-85355.
As shown in the official gazette, etc., disc-shaped grinding
The grinding fluid is applied to the grinding wheel inside the rotating shaft that supports the grinding wheel.
In addition to providing a liquid feed path for supply,
A support surface that supports the inner peripheral surface of the grinding wheel (for example,
(A mating surface provided on a flange, etc., which supports directly)
A passage extending in the radial direction of the rotating shaft (ie, in the outer circumferential direction)
Has been proposed. Such a grind
According to the stone support structure, the grinding supplied to the inner peripheral surface of the grinding wheel is
The cutting fluid is guided to the grinding surface through the inside of the porous grinding wheel
From, even with wide grinding wheel width of the grinding surface as described above, directly grinding fluid to the grinding surface of most grinding liquid is needed is supplied.

However, in the above-mentioned conventional grinding wheel support structure,
An annular groove that opens the passage extending in the radial direction is provided on the support surface.
The annular groove is provided on the inner peripheral surface of the grinding wheel.
Part of the width (length in the axial direction) facing the inside of the grinding wheel
Is supplied with a grinding fluid. Therefore, the grinding surface of the grinding wheel
In many cases, many polishings are performed at positions corresponding to the annular grooves.
Since the cutting fluid is supplied,
However, there is a problem that a uniform supply amount cannot be obtained. sand
That is, the axis of the grinding wheel is made coincident with the axis of rotation, and the grinding surface is
To support the grinding load acting on the
It is desirable that the width be as large as possible.
Cannot be so large. Such a problem is particularly problematic when performing high-precision polishing finishing in μm units .
So-called super abrasives such as diamond abrasives and CBN abrasives
In the grinding wheel used, the radial direction between the support surface and the grinding surface
Is remarkable because the spacing (i.e., the thickness of the abrasive layer) becomes smaller .

The present invention has been made in view of the above circumstances, and its purpose is to appropriately grind the entire width of the ground surface.
An object of the present invention is to provide a fluidized grinding wheel to which a cutting fluid is supplied .

[0007]

It is a first devised aspect for achieving the A first means for solving] Such object is flow-through grinding forms supplying grinding fluid on the grinding surface in contact with the workpiece a grindstone, and the outer peripheral surface corresponding to (a) the grinding face, the outer
It functions as a mounting surface at a predetermined distance from the peripheral surface
An inner peripheral surface , a porous cylindrical grindstone member having a large number of open pores communicating between the outer peripheral surface and the inner peripheral surface,
(b) a disc-shaped grindstone support member that supports the grindstone member by being fixed to the inner periphery surface of the grindstone member on the outer peripheral surface ; and (c) a circumferential direction on the outer peripheral surface of the grindstone support member .
Reciprocates periodically in the width direction on the outer peripheral surface as it goes
It is formed in a wavy shape and is closed by the inner peripheral surface of the whetstone member.
Liquid guide groove, and the grindstone formed in the grindstone support member
Liquid guide hole for guiding grinding fluid from the inner peripheral side of the support member to its liquid guide groove
And a liquid guide path for guiding the grinding fluid to the inner peripheral surface of the grinding wheel member.

[0008]

In this way, the outer peripheral surface can be ground.
In the provided grinding wheel, the outer peripheral surface of the grinding wheel support member
And the outer circumferential surface is cycled in the width direction as going in the circumferential direction.
Mounting surface of the whetstone member, which is formed in a wavy shape that reciprocates reciprocally
Channel formed by the grinding wheel support member
Grinding fluid from the inner peripheral side of the grindstone support member to the liquid guide groove
The grinding fluid supplied to the mounting surface of the grindstone member through the liquid guide path constituted by the liquid guide hole for guiding the fluid flows through the porous grindstone member and is supplied to the entire outer peripheral surface functioning as the grinding surface. .

[0009]

[Effect of the first invention] Therefore, the width dimension of the liquid guide groove must be sufficient.
To the inside of the grindstone member on the outer peripheral surface of the grindstone support member.
While securing a sufficient area to be fixed to the peripheral surface,
The inner peripheral surface of the whetstone member that functions as an attachment surface has its full width.
Over the entire surface of the grinding surface.
Good supply of grinding fluid over the width.

[0010]

[0011]

Here, preferably, a pair of end surfaces connecting the outer peripheral surface and the inner peripheral surface of the whetstone member is provided with a flow-through suppressing layer for suppressing the passage of the grinding liquid. Thereby, when the grinding fluid flows through the inside of the grindstone member, it is suppressed from being discharged from a portion other than the grinding surface, and the grinding fluid is more efficiently supplied to the grinding surface.

[0013]

The second object of the present invention is to achieve the above object.
The main point of the second invention to achieve this is the work material
Type grinding that supplies grinding fluid to the grinding surface in contact with
(A) a first annular end surface corresponding to the grinding surface, a second annular end surface located at a predetermined distance from the first annular end surface and functioning as an attachment surface , and the first annular end surface
A porous cylindrical grindstone member having a number of open pores communicating with the second annular end face, and (b) an annular end face.
And is fixed to the second annular end face of the whetstone member .
Bottomed cylindrical grinding wheel support member for supporting the Risono grindstone member
And (c) in the circumferential direction at the annular end face of the grinding wheel support member.
Periodically reciprocates the annular end face in the width direction as it goes
And a second annular end surface of the grinding wheel member.
Liquid guide groove to be closed and formed in the grindstone support member
The grinding fluid is introduced from the bottom side of the grinding wheel support member to the channel.
And a liquid guide hole, and the grinding liquid is supplied to the grinding wheel member.
And a liquid guide channel leading to the second annular end face.

[0014]

[Function and effect of the second invention] In this way, the end face
In a grinding wheel mainly used for grinding, the annular end surface of the grinding wheel support member is formed in a wave shape that periodically reciprocates in the width direction as the annular end surface moves in the circumferential direction, and
A liquid guide groove closed by a second annular end surface of the grindstone member;
Formed in the grindstone support member and at the bottom side of the grindstone support member
And a liquid guide hole that guides the grinding fluid from the liquid guide groove to the liquid guide groove
The grinding supplied to the second annular end face of the grinding wheel member through the liquid guide path.
The cutting fluid circulates through the porous whetstone member and becomes a grinding surface.
It is supplied to the entire functioning first annular end face. Therefore,
Make the width dimension of the liquid groove sufficiently small so that the annular end of the grindstone support member
Make sure that the area of the surface that is fixed to the second annular end surface of the grindstone member is sufficient.
It functions as a mounting surface while securing a reasonable size
The second annular end surface is in contact with the Kishirubeeki groove before over its entire width
Since it in cormorants, similar to the grinding wheel outer peripheral surface of the first invention is mainly subjected to grinding, the grinding liquid is supplied in a good good over the entire width of the grinding surface.

Here, preferably, the first ring of the grinding wheel member is used.
End of Jo end face and a second annular end surface of the pair of outer peripheral surface and the inner peripheral surface connecting each inhibit flow-through suppression layer passage of the grinding fluid is provided. Thereby, when the grinding fluid flows through the inside of the grinding wheel member, it is suppressed from being discharged from a portion other than the grinding surface, and the outer peripheral surface of the first invention is the same as the grinding wheel mainly used for grinding. Thus, the grinding fluid is more efficiently supplied to the grinding surface.

[0016]

[0017]

Preferably, the first and second inventions are also described.
In the above, the grinding wheel member is formed by combining CBN abrasive grains or diamond abrasive grains, whereby a better finished surface accuracy can be obtained.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 are a perspective view and a plan view, respectively, showing a partially cutaway grinding wheel 10 according to an embodiment of the present invention. The fluid-flow-type grinding wheel 10 is a so-called flat-type grinding wheel, and includes a disk-shaped grinding wheel support member 14 having a cylindrical mounting hole 12 at the center thereof and a thin cylindrical grinding wheel member 16. The grinding wheel support member 14 is, for example, aluminum, SS
It is made of steel or the like, and is fixed to the attachment surface 18 on the inner peripheral side of the grindstone member 16 with, for example, an organic adhesive. An outer peripheral surface 20 fixed to the attachment surface 18 of the grinding wheel support member 14 periodically reciprocates in the width direction of the outer peripheral surface 20 as it goes in the circumferential direction, for example, a wavy conductor having a width of 2 mm and a depth of 2 mm. A liquid groove 22 is formed over the entire circumference, and a liquid inlet 24 is provided at one end inside the grindstone support member 14 so as to open at an axially central portion of the inner peripheral surface of the mounting hole 12. At the other end, a predetermined number (12 in this embodiment) of liquid guide holes 28 each having a liquid outlet 26 opening at a portion of the liquid guide groove 22 located at the center in the width direction and supporting the grinding stone It is formed in the radial direction of the member 14. In this embodiment, the liquid guide groove 2 is used.
2 and the liquid introduction hole 28 constitute a liquid introduction path.

The grindstone member 16 is formed of a porous material having, for example, an open porosity of about 20% by bonding diamond abrasive grains, for example, with a vitrified binder or the like. A pair of end faces connecting the ends of the ground surface 30 and the attachment surface 18 are provided with liquid permeation suppression layers 32, 32, respectively. For example, when the vitrified binder is impregnated so much that the vitrified binder does not affect the grinding when the abrasive grains are bonded, the liquid permeation suppression layers 32 are formed to have, for example, an open porosity of 10% or less.

The flowing type grinding wheel 1 constructed as described above.
As shown in FIG. 3, for example, the reference numeral 0 is fixed to a rotating shaft 34 connected to a driving unit such as a surface grinder (not shown) by a pair of flanges 36, 36 and a nut 38 and rotated. The rotating shaft 34 supplies a grinding fluid supplied from the drive unit side to the inside thereof, and a predetermined number, for example, about 2 to 4 places are provided at a portion opposed to a substantially central portion of the mounting hole 12 in the axial direction. A liquid supply path 42 having a liquid supply port 40;
On the circumference of the rotary shaft 34 passing through the liquid feed port 40, there is provided a circumferential groove 43 for sending the grinding fluid discharged from the liquid feed port 40 to the entire circumference of the rotary shaft 34. The portion where the peripheral groove 43 is provided is formed relatively fluid-tight by the pair of flanges 36 and 36 and the mounting hole 12, and the grinding fluid supplied from the peripheral groove 43 is guided to the liquid inlet 24. He, the whetstone support member 14
The liquid is supplied to the liquid guide groove 22 from the liquid outlet 26 through a liquid guide hole 28 formed inside. The grinding fluid supplied to the liquid guide groove 22 spreads throughout the liquid guide groove 22, penetrates into the grindstone member 16, and is supplied to the grinding surface 30 that comes into contact with the work material 44.

Here, according to the present embodiment , provided on the outer peripheral surface.
Flowing grinding wheel 10 in which the ground surface 30 is used for grinding.
In the outer peripheral surface 20 of the grinding wheel support member 14,
The outer circumferential surface 20 in the width direction periodically as one moves
Attachment surface 18 of whetstone member 16 which is formed in a reciprocating wavy shape
Of the liquid guide groove 22 closed by the
Formed from the inner peripheral side of the grinding wheel support member 14.
And a liquid guide hole 28 for guiding the grinding liquid to the liquid groove 22.
The grinding fluid supplied to the attachment surface 18 of the grinding wheel member 16 through the fluid path flows through the porous grinding wheel member 16 and the grinding surface 30
Supplied throughout .

Therefore, the grinding liquid supplied to the outer peripheral surface 20 from the liquid introduction hole 28 spreads in the liquid introduction groove 22 while the mounting surface 18
, The width dimension of the liquid guide groove 22 is sufficiently small.
The grindstone member of the outer peripheral surface 20 of the grindstone support member 14
Make sure that the area fixed to the mounting surface 18 of the
While the mounting surface 18 extends over the entire width thereof.
The grinding fluid can be satisfactorily supplied over the entire periphery of the grinding surface 30 and over the entire width of the grinding surface 30 because the grinding fluid can be brought into contact with the grinding surface 30.

Further, since the liquid flow suppression layer 32 is provided on the end face connecting the mounting surface 18 of the grinding wheel member 16 and the respective ends of the grinding surface 30, the grinding fluid supplied to the mounting surface 18 is ground. Leakage from surfaces other than the surface 30 is suitably suppressed,
The grinding fluid is more efficiently supplied. In the present embodiment, the liquid passage suppressing layer 32 is provided by impregnating a vitrified binder, which is a binder for abrasive grains, so that the end surface is reinforced and, at the same time, the wear of the grindstone member 16 progresses. Therefore, there is no problem such as grinding resistance or scratching of the work material.

Next, another embodiment of the present invention will be described.

FIG. 4 is a perspective view of the fluid-flow type grinding wheel 46 shown in FIG.
Is a so-called cup grindstone having a bottomed cylindrical shape, which is fixed to a cylindrical grindstone member 48 and an attachment surface 50 which is one end surface of the cylindrical shape by, for example, an organic adhesive, for example, aluminum, SS steel A grinding wheel support member 54 having a bottomed cylindrical shape having a mounting hole 52 at the bottom center. An annular end surface 56 fixed to the attachment surface 50 of the grinding wheel support member 54 has a wavy liquid guide groove 58 that reciprocates periodically in the width direction of the annular end surface 56 toward the circumferential direction. The grinding wheel supporting member 5
4, a liquid inlet 60 is provided at one end at an axially central portion of the inner peripheral surface of the mounting hole 52, and a portion located at the other end of the liquid guide groove 58 at the center in the width direction. A predetermined number of liquid guide holes 64 each having an L-shaped cross section and having a liquid outlet 62 that opens at a predetermined interval are formed. In this embodiment, the liquid guide groove 5 is used.
8 and the liquid introduction hole 64 constitute a liquid introduction path.

The grinding stone member 48 is made of, for example, CBN.
The abrasive grains are bonded by, for example, a vitrified binder or the like to form a porous body having, for example, an open porosity of about 30%. The mounting surface 50 of the grinding wheel member 48 and the grinding surface 66 located on the opposite side thereof are formed. On the inner peripheral surface and the outer peripheral surface connecting the respective end portions, liquid passage suppressing layers 68, 68 are provided, respectively. The liquid passage suppressing layers 68, 68 are formed, for example, to have an open porosity of 10% or less by, for example, using the same organic adhesive as that used for the fixing after fixing the grindstone support member 54 to the grindstone member 48.

The flowing grinding wheel 4 constructed as described above.
As shown in FIG. 5, 6 is fixedly rotated on a rotating shaft 34 connected to a drive unit such as a surface grinder (not shown). The structure of the rotating shaft 34 and the flowing type grinding wheel 4
The mounting structure 6 is the same as that of the first embodiment, and the same reference numerals are given and the detailed description is omitted. As in the first embodiment, the grinding liquid guided to the liquid inlet 60 is supplied from the liquid outlet 62 to the liquid guide groove 58 through the liquid guide hole 64 formed inside the grindstone support member 54. . The grinding liquid supplied to the liquid guide groove 58 spreads throughout the liquid guide groove 58, penetrates into the grindstone member 48, and is supplied to the grinding surface 66 in contact with the work material 80.

Also in this embodiment, the grinding wheel support member 54
As it goes in the circumferential direction at the annular end face 56, its annular shape
The end face 56 is formed in a wave shape that periodically reciprocates in the width direction and
Liquid guide groove 58 closed by the mounting surface 50 of the grindstone member 48
And the grinding wheel support formed in the grinding wheel support member 54
A guide for guiding the grinding fluid from the bottom side of the member 54 to the liquid guide groove 58
The grindstone member 48 is passed through the liquid guide path constituted by the liquid hole 64 and
The grinding fluid supplied to the attachment surface 50 of the porcelain is a porous whetstone member.
48, and is supplied to the entire grinding surface 66. But
Therefore, the width dimension of the liquid guide groove 58 is made sufficiently small to support the grindstone.
The mounting surface 5 of the grindstone member 48 among the annular end surfaces 56 of the member 54
While securing a sufficient area to be fixed to zero.
Mounting surface 50 contacts liquid guide groove 58 over its entire width.
As in the first embodiment, the ground surface 66
The grinding fluid is satisfactorily supplied over the entire width. That is,
For the liquid-flow grinding wheel 10 and the liquid-flow grinding wheel 46 described above,
In this case, the grindstone supports corresponding to the grindstone mounting surfaces 18 and 50
Outer peripheral surface 20 of member 14 or annular end of grinding wheel support member 54
The liquid guide grooves 22 and 58 are uniform to some extent over the entire surface 56.
Because it is provided with cloth, the effect of the invention can be obtained suitably
It is.

[0031]

[0032]

[0033]

[0034]

[0035]

[0036]

[0037]

While one embodiment has been described in detail with reference to the drawings, the present invention can be implemented in still another embodiment.

[0039]

The liquid inlet of the liquid introduction hole is provided at the position shown in the embodiment, or at a necessary position according to the grinding machine used. Further, a plurality of liquid inlets are provided in the liquid introduction hole, and a necessary liquid inlet is arranged at a position corresponding to the liquid inlet of a liquid feed path provided on a rotating shaft or the like, and the other liquid inlets are screwed. It is also possible to close and use it by an appropriate method such as a flange or a flange.

In the above-described embodiment, the surface of the grindstone member other than the grinding surface and the attachment surface is impregnated with a binder such as vitrified, an organic adhesive, or the like, so that the outflow of the grinding fluid is suppressed. Although the liquid suppression layer was provided, even if the liquid suppression layer was not provided, the pressure or centrifugal force in the direction from the attachment surface to the grinding surface was applied to the grinding fluid supplied from the liquid supply path. Therefore, the grinding fluid mainly flows out from the grinding surface, and a certain effect can be obtained. In addition, the liquid flow suppression layer is
In addition to impregnation with a binder or an adhesive, other methods that do not hinder grinding, such as impregnation of glass or the like and adhesion of a resin film, may be used.

[0042]

The present invention is also applicable to grinding wheels using aluminum oxide abrasive grains, silicon carbide abrasive grains, etc. in addition to the grinding wheels using diamond abrasive grains or CBN abrasive grains shown in the embodiments. It is applicable, and the abrasive grains may be bound by a resinoid binder or the like in addition to the vitrified binder. In selecting the abrasive grains and the binder, it is necessary that open pores are formed in the grindstone member according to the purpose of the grinding process, and the grinding fluid required in the grinding process is sufficiently supplied. .

Further, the grindstone member may be constituted by connecting a plurality of grindstone members continuously, instead of being constituted by one member as shown in the embodiment. In such a case, the connecting portions need to be smoothly connected so that a uniform grinding load can be obtained.

Further, the present invention is cutting plane Labs described in Example
Besides, available internal grinding, to honing or the like.
Also, if the present invention is applied to a processing machine such as a grinding center that moves one or a plurality of grinding wheels in accordance with a grinding position of a work material, the grinding fluid is applied to a predetermined grinding surface even when the grinding position moves. Since the grinding fluid is reliably supplied, a complicated mechanism for moving the grinding fluid supply nozzle when the grinding wheel is moved or replaced, and a waste of manually moving or constantly supplying the grinding fluid to the entire grinding location can be preferably eliminated.

Although not specifically exemplified, the present invention can be variously modified without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a fluid-flow type grinding wheel according to an embodiment of the present invention.

FIG. 2 is a plan view of the liquid-flow type grinding wheel of FIG. 1;

FIG. 3 is a cross-sectional view showing a main part when the liquid-flow type grinding wheel of FIG. 1 is applied to a surface grinder.

FIG. 4 is a partially cutaway perspective view of a liquid-flow type grinding wheel according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a main part when the liquid-flow type grinding wheel of FIG. 4 is applied to a surface grinder.

[Explanation of symbols]

 10: Fluid type grinding wheel 14: Grinding stone support member 16: Grinding stone member 18: Mounting surface # 22: Liquid guiding groove, 28: Liquid guiding hole @ Liquid guiding channel 30: Grinding surface 34: Rotating axis 42: Liquid feeding channel

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-193174 (JP, A) JP-A-1-164546 (JP, A) Japanese Utility Model Application Sho 62-85355 (JP, U) Japanese Utility Model Utility Model Sho 61- 71357 (JP, U) Actually open 1-67006 (JP, U)

Claims (5)

(57) [Scope of request for utility model registration] 1. A flow-through grinding wheel forms supplying grinding fluid on the grinding surface in contact with the workpiece, an outer peripheral surface corresponding to the ground surface, positioned a predetermined distance away from the outer peripheral surface an inner peripheral surface which functions as attachment surface Te, and the porous cylindrical grindstone member having a plurality of openness pores communicating between the outer peripheral <br/> surface and inner peripheral surface, an outer circumferential surface A disk-shaped grinding wheel supporting member that supports the grinding wheel member by being fixed to an inner circumferential surface of the grinding wheel member; and a circumferentially extending outer circumferential surface of the grinding wheel supporting member.
The outer peripheral surface is formed in a wave shape that periodically reciprocates in the width direction.
And a liquid guide groove closed by an inner peripheral surface of the whetstone member;
Formed inside the grindstone support member and on the inner peripheral side of the grindstone support member
And a liquid guide hole for guiding the grinding liquid to the liquid guide groove, and a liquid guide path for guiding the grinding liquid to the inner peripheral surface of the grinding wheel member. Wherein said the outer peripheral surface and the inner peripheral surface a pair of end surfaces connecting the ends of each of the grindstone member, passing liquid of claim 1 which inhibits liquid passing suppression layer passage of the grinding fluid is provided Mold grinding wheel. 3. A grinding fluid is supplied to a grinding surface in contact with a work material.
To a flow-through grinding wheel forms a first annular end surface corresponding to the previous SL grinding surface, said first annular end surface
Functioning as a mounting surface at a predetermined distance from
An annular end face, between the first annular end face and the second annular end face;
A porous cylindrical having a number of open pores communicating therewith ;
A grindstone member, and a bottomed cylindrical grindstone support for supporting the grindstone member by being fixed to the second annular end face of the grindstone member at the annular end face
And support member, follow the toward Oite circumferential direction in an annular end face of the grinding wheel support member
A liquid guide groove formed in a wavy shape that periodically reciprocates in the width direction in the annular end surface and is closed by the second annular end surface of the grinding wheel member; and the grinding wheel support member formed in the grinding wheel support member. And a liquid guide hole for guiding the grinding liquid from the bottom side to the liquid guide groove, and guides the grinding liquid to the second annular end surface of the grinding wheel member.
A fluid- flow type grinding wheel , comprising: a liquid guide path . 4. A first annular end face and a second annular end face of the whetstone member.
4. The grinding wheel according to claim 3 , wherein a pair of outer peripheral surface and inner peripheral surface connecting the ends of the annular end surface is provided with a liquid-permeation suppressing layer that suppresses the passage of the grinding liquid. 5. Wherein said grinding wheel member according to claim 1 or 3 flow-through grinding wheel in which is configured by CBN abrasive grains or diamond abrasive grains are bonded.