JPH11347912A - Grinding liquid supplying mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent drop of the processing quality resulting from surface deflections of a grinding wheel by supplying a grinding liquid to the part to be ground stably and certainly and enable prolongation of the lifetime through suppression of wear of the grinding wheel. SOLUTION: Liquid supplying grooves 20 to constitute a grinding liquid supplying passage 30 together with the surface of a grinding wheel 3 are formed at flanges 4 and 5 at their contacting surfaces with the grinding wheel 3, and the grinding wheel 3 is pinched by the flanges 4 and 5 and mounted on a rotary shaft 1, and a workpiece 2 is ground by rotating the grinding wheel 3 together with the flanges 4 and 5 while a grinding liquid 10 is supplied to the passage 30, and the grinding liquid 10 is fed from the two surfaces of the grinding wheel 3 by the centrifugal force certainly to the part to be ground 2a of the workpiece 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting or grooving a workpiece (hereinafter, also simply referred to as "work") such as a ceramic molded body by a slicer or a dicer. The present invention relates to a grinding fluid supply mechanism for supplying a grinding fluid to a processing unit.

[0002]

2. Description of the Related Art
Cutting the work with a slicer or dicer,
When performing grooving, you can control the wear of the grindstone,
In order to improve the processing accuracy, processing such as cutting and grooving is performed while supplying a grinding liquid near the processing part.

Conventionally, as a method of supplying a grinding fluid to a grinding portion, a nozzle (not shown) is provided in front of a grindstone (blade) 51 as shown in FIG. A method of supplying the grinding fluid 53 from the front to the cutting portion 52, as shown in FIG. 3B, a nozzle (not shown) is disposed diagonally forward of the grindstone 51, and the work 52 is cut diagonally. A method of supplying the grinding fluid 53 to the processing portion, as shown in FIG. 3C, the grinding fluid 53 is supplied to the cutting portion of the work 52 at a substantially right angle from a plurality of positions on both side surfaces of the grindstone 51. A method, a method combining two or more of the above, and the like are used.

However, in the above-mentioned conventional method, if the supply pressure of the grinding fluid fluctuates, or if a difference occurs in the pressure of the grinding fluid supplied from both sides of the grinding wheel in the above-mentioned method, the grinding wheel may run out. However, there is a problem that the processing quality is lowered.

Further, in the above-mentioned conventional method, the grinding fluid hardly enters into the contact portion (contact surface) between the grinding wheel 51 and the work 52 where the grinding fluid is most required to be supplied, and the abrasion of the grinding wheel 51 is promoted. There is a problem.

The present invention has been made to solve the above problems, and it is possible to surely supply a grinding fluid to a grinding portion, to prevent a decrease in machining quality due to a runout of a grinding wheel, and to improve the quality of a grinding wheel. An object of the present invention is to provide a grinding fluid supply mechanism capable of suppressing wear and extending its life.

[0007]

In order to achieve the above object, a grinding fluid supply mechanism according to the present invention (claim 1) is provided for grinding a workpiece by a grindstone (blade) attached to a rotating shaft. A grinding fluid supply mechanism for supplying a grinding fluid to a grinding section, wherein a grinding fluid supply path is formed on a contact surface with the grinding wheel (grinding wheel contact surface) in cooperation with a surface of the grinding wheel. Using two flanges with grooves formed, the grinding wheel is sandwiched from both sides by this flange, the grinding wheel is attached to the rotating shaft via at least one flange, and the grinding wheel is rotated together with the flange to grind the workpiece In this case, the grinding fluid supplied to the grinding fluid supply path is supplied to a grinding portion of a workpiece by centrifugal force.

[0008] Two flanges are formed on the contact surface with the grindstone (grindstone contact surface), in which a liquid supply groove forming a grinding liquid supply passage is formed in cooperation with the surface of the grindstone. The grinding fluid is supplied to the grinding fluid supply path by rotating the grindstone together with the flange to grind the workpiece while holding it on the rotating shaft and supplying the grinding fluid to the grinding fluid supply path. By the centrifugal force, the grinding stone is reliably supplied to the grinding portion of the workpiece from both sides. Therefore, it is possible to reliably supply the grinding fluid to the grinding portion to prevent the deterioration of the processing quality due to the runout of the grindstone and to suppress the wear of the grindstone to extend the life thereof. That is, when a workpiece (work) is ground with a grindstone, pressure is generated on both sides of the grindstone when a grinding fluid is present between the grindstone side surface and the groove side surface of the work, and the pressure difference causes bending stress on the grindstone itself. Occurs, and the whetstone is deformed. And
The tendency becomes stronger as the clearance between the grindstone side surface and the groove side surface of the work becomes smaller. Therefore, when performing high-precision machining, the grinding fluid is supplied to only one side of the grinding wheel, or even when supplied to both sides. In the processing part, a difference occurs in the supply amount of the grinding liquid on both sides of the grindstone, the grindstone is easily deformed, and it becomes impossible to perform processing with high accuracy,
According to the grinding fluid supply mechanism of the present invention, the grinding fluid is reliably supplied to the grinding portion from both sides of the grindstone, to prevent a decrease in machining quality due to the runout of the grindstone, and to suppress the wear of the grindstone. Life can be extended.

In the grinding fluid supply mechanism of the present invention,
There is no particular limitation on the shape or mode of the liquid supply groove, and it is a broad concept meaning various spaces between the flange and the grindstone that serve as passages through which the grinding liquid can be sent to the grinding portion.
That is, in some cases, the grinding fluid supplied to the liquid supply groove is supplied to the grinding portion of the workpiece through a path such as a slit by centrifugal force. Are also included in the liquid supply groove.

In the grinding fluid supply mechanism according to a second aspect of the present invention, the main portion of the grinding fluid supplied to the liquid supply groove is ground by adjusting the supply position of the grinding liquid to the liquid supply groove. It is characterized in that it is supplied near the part.

The centrifugal force fluctuates depending on the diameter and rotation speed of the grindstone and the flange. The centrifugal force applied to the grinding fluid is controlled by adjusting the supply position of the grinding fluid to the fluid supply groove, and the centrifugal force is applied to the fluid supply groove. The main part of the supplied grinding fluid can be supplied to the grinding part, so that the present invention can be made more effective.

In the grinding fluid supply mechanism according to a third aspect of the present invention, the surface of the flange opposite to the grinding wheel contact surface (outer surface) passes through the flange to the grinding wheel contact surface (inner surface). Along with disposing a grinding fluid passage reaching the formed fluid supply groove, the grinding fluid is formed on the inner surface of the flange so that the grinding fluid reaches the fluid supply groove formed on the grinding wheel contact surface by centrifugal force. The outlet is disposed closer to the outer periphery of the flange than to the inlet of the grinding fluid passage on the outer surface of the flange.

[0013] A grinding fluid passage is provided through the flange.
By disposing the outlet of the grinding fluid passage on the inner surface of the flange from the outer periphery of the flange, the grinding fluid supplied from the outside of the flange can be surely supplied to the grinding groove contact surface by the centrifugal force. , And the present application can be made more effective.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional front view showing a main part of a machine tool provided with a grinding fluid supply mechanism according to an embodiment of the present invention, and FIG. 2 is a side view thereof.

The machine tool according to this embodiment has a grindstone (blade) 3 for contacting and cutting or grooving the rotating shaft 1 and the workpiece (work) 2.
While holding the grindstone 3 from both sides.
And two fixing members 6 for fixing the flanges 4 and 5 to the rotating shaft 1.

The grinding fluid supply mechanism of the machine tool according to this embodiment supplies a grinding fluid 10 to a grinding portion (a contact surface between the grinding wheel 3 and the work 2) 2a as shown in FIGS. A surface (grinding wheel contact surface) that is in contact with the grinding stone 3 inside the two flanges 4 and 5 that sandwich the grinding stone 3
The grinding fluid supply path 30 for supplying the grinding fluid 10 is formed, so that the grinding fluid 10 supplied to the grinding fluid supply path 30 is ground by centrifugal force along the both surfaces of the grindstone 3. It is configured to be supplied to the processing unit 2a.

Hereinafter, the grinding fluid supply mechanism of this embodiment will be described in more detail. In this embodiment, the grinding fluid 10 is applied to the grinding wheel contact surface of each of the two flanges 4 and 5.
Grinding fluid supply path 30 for supplying the grinding fluid to the grinding portion 2a by centrifugal force is formed.
Numeral 0 is formed from an annular liquid supply groove 20 and a slit 20a which is provided so as to communicate with the liquid supply groove 20 at a predetermined interval in the circumferential direction and reaches the outer peripheral portions of the flanges 4 and 5. I have.

Each of the two flanges 4 and 5 has an annular liquid supply from the surface (outside surface) opposite to the grinding wheel contact surface, penetrating through the flanges 4 and 5 to the grinding wheel contact surface (inner surface). A grinding fluid passage 21 reaching the groove 20 is provided.

The grinding fluid passage 21 has an annular groove 22 formed on the outer peripheral surface of the flanges 4 and 5, and a through hole 23 formed at a bottom of the annular groove 22 at a predetermined interval in the circumferential direction.
Is formed from. In addition, the through-hole 23 is provided with a liquid supply groove 20 in which the grinding fluid 10 is formed on the grinding wheel contact surface by centrifugal force.
So that the outlet 25 of the grinding fluid passage 21 on the inner surface of the flanges 4 and 5 is located closer to the outer periphery of the flange 4 and 5 than the inlet 24 of the grinding fluid passage on the outer surface of the flanges 4 and 5. It is configured to be.

Further, in this embodiment, the centrifugal force is controlled so that the grinding fluid 10 is supplied in a concentrated manner in the vicinity of the grinding portion, that is, the position shown in FIG. The grinding fluid supply nozzles 11 and 12 (FIGS. 1 and 2) are shifted from the position defined by A by an angle α in the circumferential direction.
Are arranged.

In this embodiment, the grinding fluid 10 is
The grinding fluid is supplied from the grinding fluid tank 7 to the grinding fluid supply nozzles 11 and 12 via the pump 8 and the supply path 9.

When the workpiece 2 is ground by using the machine tool configured as described above, the grinding fluid supply nozzle 1
The grinding fluid 10 supplied from the grinding fluid passages 21 and 12
(That is, through the annular groove 22 and the through hole 23), the annular liquid supply groove 20 formed on the grinding wheel contact surface of the flanges 4 and 5.
After reaching the outer peripheral portions of the flanges 4 and 5 via the slits 20a by centrifugal force, the water is supplied to the grinding portion 2a along both surfaces of the grindstone 3.

Therefore, in the machine tool of this embodiment, the grinding fluid 10 is stably and reliably supplied to the grinding portion 2a of the work 2 along both surfaces of the grinding wheel 3 by centrifugal force. In addition, it is possible to precisely process the work 2 while preventing the surface runout of the grinding wheel 3 and extend the life of the grindstone 3.

Further, the grinding fluid supply mechanism of the present invention can be implemented relatively easily simply by adding processing to a conventional flange, so that it can be widely used and is significant.

In the above embodiment, a case has been described in which one grinding fluid supply nozzle is provided on each side of the grindstone. However, a plurality of grinding fluid supply nozzles are provided at predetermined intervals in the circumferential direction. It is also possible to configure so as to be installed.

The present invention is not limited to the above embodiment, but relates to the structure of the flange and the rotating shaft, the specific pattern of the grinding fluid supply path formed in the flange, the shape and structure of the grindstone, and the like. Various applications and modifications can be made within the scope of the invention.

[0027]

As described above, the grinding fluid supply mechanism of the present invention (Claim 1) has a contact surface with a grindstone (a grindstone contact surface).
Using two flanges with a liquid supply groove that forms a grinding fluid supply path in cooperation with the surface of the grindstone, the grinding wheel is sandwiched by these flanges from both sides and attached to the rotating shaft, and ground into the grinding fluid supply path. Grinding the workpiece by rotating the grindstone together with the flange while supplying the fluid, the grinding fluid supplied to the grinding fluid supply path is ground by centrifugal force from both sides of the grindstone. So that the grinding fluid is reliably supplied to the grinding section from both sides of the grindstone to prevent the deterioration of the processing quality due to the runout of the grindstone and to suppress the wear of the grindstone. Life can be extended.

The centrifugal force fluctuates depending on the diameter and the rotation speed of the grinding wheel and the flange, but by adjusting the supply position of the grinding fluid to the fluid supply groove as in the grinding fluid supply mechanism of the second aspect, It becomes possible to control the centrifugal force applied to the grinding fluid so that a larger portion of the grinding fluid supplied to the liquid supply groove is supplied to the grinding portion, and the present invention can be made effective .

Further, a grinding fluid passage which penetrates the flange is provided as in the grinding fluid supply mechanism of the third aspect.
If the outlet of the grinding fluid passage on the inner surface is arranged closer to the outer periphery of the flange than the inlet of the grinding fluid passage on the outer surface of the flange, the grinding fluid supplied from the outside of the flange is centrifuged. It is possible to reliably supply the liquid to the liquid supply groove formed on the grinding wheel contact surface, and the present invention can be further effectively demonstrated.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view showing a main part of a machine tool provided with a grinding fluid supply mechanism according to an embodiment of the present invention.

FIG. 2 is a side view showing a main part of a machine tool provided with a grinding fluid supply mechanism according to one embodiment of the present invention.

FIGS. 3 (a), (b) and (c) are diagrams showing a conventional method of supplying a grinding fluid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotary axis 2 Workpiece (work) 2a Grinding part 3 Grinding wheel 4, 5 Flange 6 Fixing member 7 Grinding liquid tank 8 Pump 9 Supply path 10 Grinding liquid 11, 12 Grinding liquid supply nozzle 20 Liquid supply groove 20a Slit 21 Grinding Liquid passage 22 Annular groove 23 Through hole 24 Inlet of grinding fluid passage (through hole) 25 Outlet of grinding fluid passage (through hole) 30 Grinding fluid supply passage

Claims (3)

[Claims] 1. A grindstone (blade) attached to a rotating shaft
A grinding fluid supply mechanism for supplying a grinding fluid to a grinding portion when grinding a workpiece by means of a grinding wheel. The grinding fluid supply mechanism cooperates with a grinding wheel surface on a contact surface with a grinding wheel (grinding wheel contact surface). Using two flanges formed with a liquid supply groove that constitutes a grinding liquid supply path, while holding the grindstone from both sides by these flanges, attaching the grindstone to the rotating shaft via at least one flange, and attaching the grindstone together with the flange A grinding fluid supply mechanism for supplying a grinding fluid supplied to the grinding fluid supply path to a grinding portion of the workpiece by centrifugal force when the workpiece is rotated for grinding. 2. A main part of the grinding fluid supplied to the liquid supply groove is supplied to a vicinity of a grinding portion by adjusting a supply position of the grinding liquid to the liquid supply groove. The grinding fluid supply mechanism according to claim 1. 3. A grinding fluid passage extending from a surface (outer surface) of the flange opposite to the grinding wheel contact surface to a fluid supply groove formed in the grinding wheel contact surface (inner surface) through the flange. With the arrangement, the outlet of the grinding fluid passage on the inner surface of the flange is connected to the grinding fluid passage on the outer surface of the flange so that the grinding fluid reaches the liquid supply groove formed on the grinding wheel contact surface by centrifugal force. The grinding fluid supply mechanism according to claim 1 or 2, wherein the grinding fluid supply mechanism is disposed closer to an outer peripheral portion of the flange than to the inlet.