JPH06320423A - Winding nozzle for supplying grinding liquid - Google Patents

Abstract

PURPOSE:To provide a wrapping nozzle for supplying a grinding liquid, by which the grinding liquid can be forced to reach a grinding point surely even in the case where a work is ground by an angular grinder. CONSTITUTION:In a wrapping nozzle 4 for supplying a grinding liquid, which is adapted to supply a grinding liquid 3 to a rotating grinding wheel 1 by a wrapping method, a grinding liquid guide plate 47 having a surface 47a parallel or substantially parallel to the circumferential surface 1b of the grinding wheel 1 is provided in the downstream of the grinding liquid 3 from a nozzle outlet 46, and a grinding liquid straightening plate 48 having a surface 48a intersecting perpendicularly to the circumferential surface 1b of the grinding wheel 1 is provided on the surface on the grinding wheel 1 side of the grinding liquid guide plate 47.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding liquid supply winding nozzle which is used for reliably supplying a grinding liquid to a grinding point of a work by the grinding stone when the work is ground by a rotating grinding stone. It is a thing.

[0002]

2. Description of the Related Art The purpose of using a grinding fluid such as grinding oil in grinding is mainly to cool, lubricate, and prevent and remove clogging, but each of these effects can be effectively obtained. In order to achieve this, it is necessary to ensure that the grinding fluid reaches the grinding point of the grindstone.

However, when the grindstone rotates at a high speed, the air flow that accompanies the rotation of the grindstone increases, so that the grinding liquid hardly reaches the grinding point. Therefore, particularly in high-speed grinding, it is necessary to break a considerably thick air layer entrained by a grindstone rotating at a high speed to reach the grinding point, and therefore various grinding liquid supply methods have been conventionally developed.

As a typical grinding fluid supply system,
There are methods that devise the structure of the grindstone itself, methods that aim the grinding liquid at the grinding point with a high-pressure jet, methods that change the flow direction of the air layer that follows the rotating grindstone, and methods that use a winding nozzle.

Among them, the one in which the structure of the grindstone itself is devised to provide the flow path of the grinding fluid inside the grindstone is not so preferable because the grindstone may be deformed or broken in the high speed grinding. .

The method using a high-pressure jet is effective in breaking the air layer that accompanies the rotation of the grindstone, but has the problem that the equipment is large, the cost is high, and the maintenance is difficult.

On the other hand, the method of changing the flow direction of the air entrained by the rotating grindstone by a shield plate, a baffle plate, etc. and the method of using a winding nozzle are relatively simple in structure and require almost no maintenance. Therefore, it can be said that this method is relatively easy to adopt.

Among these, the method using the winding nozzle is
A method that breaks through the air layer by supplying the grinding fluid in a direction orthogonal to the tangential direction of the grindstone and causes the grinding fluid to wind around the grindstone instead of the air layer so that this grinding fluid reaches the grinding point. Is.

14 and 15 show an example of a system in which a winding nozzle is used and a shield plate for changing the flow of the air layer is used in combination in FIG. 14, and when the work 52 is ground by the grindstone 51. Above the grinding point P, the direction of the winding nozzle 54 is set so that the grinding fluid 53 flows out in the direction orthogonal to the tangential direction of the grindstone 51 (that is, the centripetal direction), and the grinding wheel 51 is rotated. The rotating air layer is broken down by the grinding liquid 53, and the grinding liquid 53 is wound around the surface of the grindstone 51.
To reach the grinding point P.

In the system shown in FIG. 14, the movable air shield plates 55a and 55b are provided on the upper and side portions of the winding nozzle 54, respectively.
The air layer flowing through the gap between the a and 55b and the grindstone 51 is broken by the grinding liquid 53 so that the grinding liquid 53 is wound around the surface of the grindstone 51 instead of the air layer (for example, " Toyota Koki Technical Report ”VOL.31
No. 4 (1991.3) pages 25-29).

In the case of such a winding nozzle system,
A straight cylindrical grinder or a surface grinder has a remarkable effect, especially when the grindstone rotates at a high speed.

[0012]

However, when the supply of the grinding fluid by such a winding nozzle system is applied to the angular grinder, as shown in FIGS. 16 to 18, the grindstone 51 has a circumferential surface. Since 51b has the angular angular tip portion 51a, the grinding fluid 53 flowing out from the winding nozzle 54 is initially the grindstone 51.
Even if it wraps around the entire width of the circumferential surface 51b, the centrifugal force causes it to crawl on the circumferential surface 51b of the grindstone 51 and concentrate on the angular angular tip portion 51a.
As a result, there is a problem that the grinding fluid 53 may be separated from the circumferential surface 51b of the grindstone 51 to the outside by the centrifugal force, and the grinding fluid 53 may not reach the grinding point P.

It is also conceivable that the distance between the winding nozzle 54 and the work 52 should be made as short as possible to prevent the grinding fluid 53 from leaving the circumferential surface 51b of the grindstone 51 to the outside, but in angular grinding, Since the shape of the work 52 is often not simple, it is difficult to reduce the distance between the winding nozzle 54 and the work 52 in practice, and in the case of the angular grinding, satisfactory grinding is achieved. There is a problem that the liquid 53 may not reach the grinding point P, and it has been a conventional problem to solve such a problem.

[0014]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and is not limited to the case where a straight cylindrical grinder or a surface grinder is used to grind a work, but an angular grinder is used to grind the work. Even when grinding is performed, it is possible to reliably reach the grinding point of the grindstone with a sufficient amount of grinding liquid to obtain the cooling effect, the lubricating effect, and the effect of suppressing and removing the clogging of the grindstone. The purpose is to provide a winding nozzle for use.

[0015]

According to the present invention, in a grinding liquid supply winding nozzle for supplying a grinding liquid to a rotating grindstone by a winding method, a grinding stone circle is provided downstream of the nozzle outlet from the grinding liquid. It is characterized in that it is provided with a grinding fluid guide plate having a surface parallel or substantially parallel to the peripheral surface, and in some cases, further, on the grinding stone side surface of the grinding fluid guide plate, a circle extending in the circumferential direction of the grinding stone. A grinding fluid straightening plate having a surface in a direction intersecting with the peripheral surface is provided, and such a construction of the grinding fluid supply winding nozzle serves as means for solving the above-mentioned conventional problems.

In one embodiment, a grinding fluid straightening plate having a surface extending in the circumferential direction of the grinding stone and intersecting the circumferential surface is provided on the surface of the grinding fluid guide plate on the grinding stone side so that the grinding fluid is The grindstone is configured to be prevented from flowing in the width direction, and the winding nozzle for supplying the grinding fluid having such a configuration is suitable for the angular grinding process.

Further, this angular grinding process, for example, as shown in FIG. 9, CBN (Cubic Boron) is used.
(Nitrid) In the angular grinding process using the grindstone 1, the wheel peripheral velocities are greatly different between the maximum diameter portion φD and the minimum diameter portion φd of the grinding stone. In such a case, as shown in FIG. 10 to FIG. 12, since the grinding resistance tends to increase and the amount of wheel wear increases in a portion where the grinding wheel peripheral speed is low as compared with a portion where the grinding wheel peripheral speed is large,
As shown in FIG. 13, in consideration of the relationship that the more the grinding fluid is supplied to the grinding point, or the faster the grinding fluid is supplied, the wear amount of the grindstone becomes smaller, and thus the more preferable embodiment is The grinding liquid straightening plate is provided so as to be inclined with respect to the tangential direction of the grindstone.

In this more preferred embodiment, the area of one grinding liquid passage portion at the nozzle outlet divided by the grinding liquid rectifying plate inclined with respect to the tangential direction of the grindstone is S1, and this grinding liquid passage portion is The flow velocity of the grinding fluid passing therethrough is V, and the area of one grinding fluid passage portion in the tip portion of the grinding fluid guide plate divided by the grinding fluid rectifying plate is S1 ′ (in this case, S1> S1 ′). Where V'is the flow rate of the grinding fluid passing through the grinding fluid passage portion and ρ is the density of the grinding fluid, from the relationship of ρS1V = ρS1′V1 ′, V1 ′ = (S1 / S1 ′) · V, that is, V1
′> V, and similarly, the area of passage of the other grinding liquid at the nozzle outlet divided by the grinding liquid straightening plate is S2,
The flow velocity of the grinding fluid passing through this grinding fluid passage is V,
The area of the other grinding fluid passage portion at the tip of the grinding fluid guide plate divided by the grinding fluid rectifying plate is S2 ′ (in this case, S2 <S2 ′), and the grinding passing through the other grinding fluid passage portion at this tip Assuming that the flow velocity of the liquid is V2 ′ and the density of the grinding liquid is ρ, V2 ′ = from the relationship of ρS2V = ρS2′V2 ′
(S2 / S2 ′) · V, that is, V2 ′ <V, so V1 ′> V2 ′.

That is, in this more preferred embodiment,
The flow velocity of the grinding fluid passing through the tip of the grinding fluid guide plate is V1
In addition to having a speed difference of '>V2' and a difference in flow rate per unit area, a large amount of grinding liquid can be supplied at a high flow speed to a portion having a low grinding wheel peripheral speed.

[0020]

The winding nozzle for supplying the grinding liquid according to the present invention has the above-mentioned structure. Therefore, when the supply of the grinding liquid by the winding nozzle system is applied to the angular grinder, the winding nozzle is used. Even if the grinding fluid flowing out of the grinding fluid flows along the circumferential surface of the grindstone due to centrifugal force and tries to concentrate on the angular angular tip, use a grinding fluid guide plate that has a surface that is parallel or nearly parallel to the circumferential surface of the grindstone. By providing the grinding fluid, it is possible to prevent the grinding fluid from excessively concentrating on the angular tip of the grindstone, and to prevent the grinding fluid from leaving the angular tip of the grindstone. To reach.

If a grinding fluid straightening plate having a surface extending in the circumferential direction of the grinding stone and having a direction intersecting with the circumferential surface is provided on the surface of the grinding fluid guide plate on the grindstone side, it flows out from the winding nozzle. It was prevented that the grinding fluid flowed along the circumferential surface of the grindstone due to centrifugal force and was concentrated on the angular angular tip, and the grinding fluid maintained a substantially uniform thickness in the width direction of the grindstone. In this state, the entire grinding point is evenly reached, and the cooling action, the lubrication action, and the clogging suppression and removal action by supplying the grinding fluid can be more efficiently exhibited.

Further, when the grinding fluid straightening plate is provided so as to be inclined with respect to the tangential direction of the grindstone, it is possible to prevent the grinding fluid flowing out from the winding nozzle from concentrating on the angular angular tip portion due to centrifugal force. In addition to ensuring that the grinding fluid reaches the grinding point, there is a partial difference in the flow rate of the grinding fluid and the flow rate per unit area at the tip of the grinding fluid guide plate. If the number of grinding fluid straightening plates and the inclination with respect to the tangential direction of the grindstone are set so that a large amount of grinding fluid is supplied to a portion with a low peripheral speed at a high flow rate, the cooling action, the lubricating action, and the clogging suppression and removal action are extremely effective. It is efficiently exhibited, and at this time, the wear amount of the grindstone grinding surface becomes substantially uniform.

[0023]

1 and 2 show the manner in which a workpiece is ground using a winding nozzle for supplying a grinding fluid according to an embodiment of the present invention. An angular grindstone 1 having an angular angular tip 1a. When the work 2 is ground by the above method, the structure of the grinding liquid supply winding nozzle 4 is made so that the grinding liquid 3 can surely reach the grinding point P.

That is, the winding fluid supply winding nozzle 4 shown in this embodiment is a box-shaped nozzle body 41.
Has a grinding liquid inlet 42 on the upper side thereof, and a follow-up air shield plate 43 is provided at a position close to the grindstone 1. It is made to flow away from the circumferential surface 1b of the grindstone 1. The entrainment air shielding plate 43 is fixed by bolts 44. In this case, the bolt holes of the bolts 44 are formed in an oval shape so that the position can be adjusted in the direction of approaching and separating from the grindstone 1. Has become.

A grinding liquid guide 45 is provided inside the nozzle body 41, and a nozzle outlet 46 is provided at the lower side of the nozzle body 41.
A grinding fluid guide plate 47 having a surface 47a parallel to the circumferential surface 1b of the grindstone 1 is provided on the downstream side of the grinding fluid 53 with respect to FIG.

As shown in FIG. 2, the grinding fluid guide plate 47 has not only a surface 47a parallel to the circumferential surface 1b of the grindstone 1 but also a surface 47b parallel to the side surface 1c of the grindstone 1. ing.

Therefore, when the grinding liquid supply winding nozzle 4 having such a structure is used to grind the workpiece 2 with the grindstone 1 while supplying the grinding liquid 3 from the nozzle 4, the winding nozzle The grinding fluid 3 flowing out from the nozzle outlet 46 of the No. 4 flows along the circumferential surface 1b of the grindstone 1 by the centrifugal force and concentrates on the angular angular tip 1a, and by the centrifugal force, the angular angular tip of the grindstone 1. Even if you try to move away from 1a, the circumferential surface 1b of the grindstone 1
The grinding fluid guide plate 47 having a surface 47a parallel to the above prevents the excessive concentration of the grinding fluid 3 on the angular angular tip portion 1a and the outward flow away from the circumferential surface 1b of the grindstone 1. Therefore, the grinding fluid 3 is prevented from concentrating only on the angular angular tip portion 1a or leaving the tip portion 1a, and the grinding fluid 3 reaches the grinding point P without fail, and the grinding fluid is supplied. By doing so, the cooling action, the lubricating action, and the clogging suppressing and removing action can be sufficiently obtained.

FIGS. 3 to 5 show a state in which a workpiece 2 is ground by a grindstone 1 using a grinding liquid supply winding nozzle 4 according to another embodiment of the present invention. In the grinding fluid guide plate 47 in the embodiment shown in FIG. 2, the surface on the grindstone 1 side, that is, the circumferential surface 1b of the grindstone 1.
A circumferential surface 1b extending in the circumferential direction of the grindstone 1 on a surface 47a parallel to
The case where a plurality of grinding fluid straightening vanes 48 each having a surface 48a in a direction intersecting with the grinding fluid straightening vanes 4 are shown.
All 8 are provided in the tangential direction of the grindstone 1 (vertical direction in FIG. 3).

Therefore, when the grinding fluid supply winding nozzle 4 having such a configuration is used and the grinding fluid 1 is used to grind the work 2 while the grinding fluid 3 is supplied from the nozzle outlet 46 of the nozzle 4. Even if the grinding fluid 3 flowing out from the nozzle outlet 46 of the winding nozzle 4 attempts to flow along the circumferential surface 1b of the grindstone 1 by the centrifugal force, the grindstone 1
Is prevented by the plurality of grinding fluid rectifying plates 48 provided in the tangential direction of the grinding fluid 3, and the grinding fluid 3 is prevented from concentrating on the angular angular tip portion 1a, and the grinding fluid 3 is substantially uniform in the width direction of the grindstone 1. The grinding point P is evenly reached in a state where the thickness is maintained, and the cooling action, the lubrication action, and the clogging suppression and removal action by supplying the grinding fluid 3 are more efficiently exhibited.

FIGS. 6 and 7 show a grinding liquid supply winding nozzle 4 according to still another embodiment of the present invention, which is a grinding liquid guide plate 47 in the embodiment shown in FIGS. 3 to 5. , The surface of the grindstone 1 side, that is, grindstone 1
Has a surface 49a extending in the circumferential direction of the grindstone 1 and intersecting the circumferential surface 1b on a surface 47a parallel to the circumferential surface 1b of the grindstone 1 and tilted with respect to the tangential direction of the grindstone 1 (vertical direction in FIG. 7). The case where a plurality of (3) grinding fluid rectifying plates 49 are provided is shown.

In this case, the areas Sa, Sb, Sc, and Sd of the four grinding fluid passage portions a, b, c, and d of the nozzle outlet 46 divided by the three grinding fluid rectifying plates 49 are set equal to each other. I am doing it. On the other hand, the areas SA, SB, S of the grinding fluid passage portions A, B, C, D at the tip of the grinding fluid guide plate 47 divided by the grinding fluid straightening plates 49 are divided.
C and SD are set so that SA <SB <SC <SD, and the grinding fluid passage portion A having the smallest area among the grinding fluid passage portions A, B, C, and D is the angular angular tip of the grindstone 1. It is located at the farthest place from the portion 1a (on the left side in FIG. 7), that is, at the place where the grinding wheel peripheral speed is the slowest.

That is, Sa / SA> Sb / SB> Sc /
By setting SC> Sd / SD, the grinding fluid guide plate 47
The flow velocities VA, VB, VC and VD of the grinding fluid 3 passing through the respective grinding fluid passage portions A, B, C and D at the tip end are represented by VA>VB> V.
With C> VD, the flow rate per unit area QA, QB,
QC and QD are also set to QA>QB>QC> QD.

Therefore, when the grinding fluid supply winding nozzle 4 having such a configuration is used and the grinding fluid 1 is used to grind the workpiece 2 while the grinding fluid 3 is supplied from the nozzle outlet 46 of the nozzle 4. Even if the grinding fluid 3 flowing out from the nozzle outlet 46 of the winding nozzle 4 tries to crawl on the circumferential surface 1b of the grindstone 1 due to centrifugal force, this is blocked by the grinding fluid rectifying plate 49 provided in plurality, Since the grinding fluid 3 does not concentrate on the angular angular tip portion 1a, the grinding fluid 3 reaches the grinding point P,
By supplying the grinding fluid 3, the cooling action, the lubricating action, and the clogging suppressing and removing action are efficiently exhibited.

Further, the flow rates VA, VB, VC and VD of the grinding fluid 3 passing through the grinding fluid passage portions A, B, C and D at the tip of the grinding fluid guide plate 47 are VA>VB>VC> VD.
Flow rate Q per unit area
A, QB, QC, and QD have a flow rate difference of QA>QB>QC> QD, and the grinding fluid passage portion A having the smallest area is farthest from the angular angular tip portion 1a of the grindstone 1, That is, since the grinding wheel peripheral speed is located at the lowest position, a large amount of the grinding fluid 3 is supplied at a high flow rate to the portion where the grinding wheel peripheral speed is slow and is likely to wear, and the wear amount of the grinding wheel grinding surface is reduced. It becomes almost uniform. As a result, it is possible to reduce the possibility that a defect such as tapering of the work will occur, and to reduce the number of dresses.

FIG. 8 shows three grinding fluid straightening plates 4 in the winding fluid supply winding nozzle 4 provided with the grinding fluid straightening plate 49.
9 shows a case where the arrangement pattern 9 is changed.

In this case, the respective areas Sa, Sb, Sc, Sd of the four grinding fluid passage portions a, b, c, d of the nozzle outlet 46 divided by the three grinding fluid rectifying plates 49 are S
It is set so that a>Sb>Sc> Sd. On the other hand, the areas SA, SB, SC, SD of the grinding fluid passage portions A, B, C, D at the tip of the grinding fluid guide plate 47 divided by the grinding fluid rectifying plate 49 are made equal to each other. Yes, the location where the tip of the grinding fluid passage A, which communicates with the grinding fluid passage portion a having the largest area among the grinding fluid passage portions a, b, c, d, is farthest from the angular angular tip portion 1a of the grindstone 1. (Left side of FIG. 8), that is, the place where the grinding wheel peripheral speed is the slowest.

That is, Sa / SA> Sb / SB> Sc /
By setting SC> Sd / SD, the grinding fluid guide plate 47
The flow velocities VA, VB, VC and VD of the grinding fluid 3 passing through the respective grinding fluid passage portions A, B, C and D at the tip end are represented by VA>VB> V.
With C> VD, the flow rate per unit area QA, QB,
QC and QD are also set to QA>QB>QC> QD. Also in this case, not only can the grinding fluid 3 reach the grinding point P reliably, but also the amount of wear of the grinding wheel grinding surface is almost uniform. It can be anything.

[0038]

According to the winding nozzle for supplying the grinding fluid according to the present invention, when the supply of the grinding fluid by the winding nozzle system is applied to the angular grinder, the grinding fluid flowing out from the winding nozzle causes centrifugal force. Even if an attempt is made to flow along the circumferential surface of the grindstone to concentrate on the angular angular tip, the grinding fluid guide plate is provided that has a surface parallel or nearly parallel to the circumferential surface of the grindstone. Is prevented from excessively concentrating on the angular tip of the grindstone, and the grinding fluid is prevented from separating from the angular tip of the grindstone due to centrifugal force, ensuring that the grinding fluid reaches the grinding point. Also, on the grindstone-side surface of the grinding fluid guide plate, by providing a grinding fluid rectifying plate having a surface extending in the circumferential direction of the grindstone and intersecting the circumferential surface,
It is possible to prevent the grinding fluid flowing out of the winding nozzle from flowing along the circumferential surface of the grindstone due to centrifugal force and concentrating on the angular angular tip, and the grinding fluid has a substantially uniform thickness in the width direction of the grindstone. The entire surface of the grinding point will be evenly reached in the state of being maintained, and further, by installing the grinding fluid straightening plate so as to be inclined with respect to the tangential direction of the grindstone, the grinding fluid flowing out from the winding nozzle is angularly caused by the centrifugal force. Concentration on the tip of the square shape is prevented, and there is a partial difference in the flow rate of the grinding fluid and the flow rate per unit area at the tip of the grinding fluid guide plate, so the grinding point, especially the grindstone, is easily worn A large amount of grinding fluid will reach the part reliably at a high flow speed, and the grinding fluid can be reliably delivered even when the grinding fluid supply winding nozzle is largely separated from the grinding point. Since it is possible to reach the entire cutting point, the cooling action, the lubrication action, and the clogging suppression and removal action by supplying the grinding fluid can be efficiently exerted, resulting in the grinding burn of the work and the uneven wear of the grindstone. It is possible to prevent the occurrence of problems such as the above.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional explanatory view from a side direction showing a state in which a work is ground by a grindstone using a grinding liquid supply winding nozzle according to an embodiment of the present invention.

FIG. 2 is a horizontal cross-sectional explanatory view of the grinding fluid guide plate in FIG.

FIG. 3 is a back side explanatory view from the grindstone side showing a state in which a work is ground by a grindstone using a grinding liquid supply winding nozzle according to another embodiment of the present invention.

4 is a partial vertical cross-sectional explanatory view from the side surface direction in FIG.

5 is a horizontal cross-sectional explanatory view showing a grinding liquid guide plate and a grinding liquid rectifying plate in FIGS. 3 and 4. FIG.

FIG. 6 is an explanatory perspective view showing a winding nozzle for supplying a grinding liquid according to still another embodiment of the present invention.

7 is a rear surface explanatory view from the grindstone side showing a state in which a work is ground by a grindstone using the grinding liquid supply winding nozzle of FIG. 6;

8 is a back side explanatory view from the grindstone side showing an example of changing the arrangement pattern of the grinding fluid rectifying plate in the grinding fluid supply winding nozzle of FIG. 6. FIG.

FIG. 9 is a side view illustrating a difference in wheel peripheral speed between a maximum diameter portion and a minimum diameter portion of the grindstone in the angular grinding process using the CBN grindstone.

FIG. 10 is a graph showing the relationship between grinding wheel peripheral speed and grinding resistance.

FIG. 11 is a graph showing a relationship between a grinding wheel peripheral speed and a grinding wheel wear amount.

FIG. 12 is a graph showing the relationship between material removal rate and grinding resistance when the grinding wheel peripheral speed is changed.

FIG. 13 is a graph showing the relationship between the material removal amount and the grindstone wear amount (the grindstone radius decrease amount) when the flow rate of the grinding fluid is changed.

FIG. 14 is a partial vertical cross-sectional explanatory view ((a) of FIG. 14) and a horizontal cross-sectional explanatory view from a side direction showing a state in which a grinding stone is used to grind a work using a grinding liquid supply winding nozzle according to a conventional example; ((B) of FIG. 14).

FIG. 15 is a partial vertical cross-sectional explanatory view from the side direction showing a state in which a grinding stone is used to grind a work using a grinding liquid supply winding nozzle according to another conventional example.

FIG. 16 is a front view showing the flow of the grinding liquid on the circumferential surface of the grindstone in the angular grinder.

FIG. 17 is an explanatory view from the side direction in FIG.

FIG. 18 is an explanatory view from the plane direction in FIG.

[Explanation of symbols]

 1 Grindstone 1a Angular angular tip portion of grindstone 1b Grindstone circumferential surface 1c Grindstone side surface 2 Work piece 3 Grinding fluid 4 Grinding fluid supply winding nozzle 41 Nozzle body 42 Grinding fluid inlet 43 Entrainment air shield plate 46 Nozzle outlet 47 Grinding liquid guide plate 47a Surface parallel to (or almost parallel to) the circumferential surface of the grindstone 48,49 Grinding liquid flow straightening plate 48a, 49a Surface in the direction intersecting the circumferential surface of the grindstone P Grinding point of work with grindstone

Claims (3)

[Claims] 1. In a grinding liquid supply winding nozzle for supplying a grinding liquid to a rotating grindstone in a winding system, the grinding liquid supply winding nozzle is downstream of the nozzle outlet and is parallel or substantially parallel to the circumferential surface of the grinding stone. A winding liquid supply winding nozzle, characterized in that a grinding liquid guide plate having a surface is provided. 2. The grinding fluid supply plate according to claim 1, wherein a grinding fluid straightening plate having a surface extending in a circumferential direction of the grinding stone and intersecting a circumferential surface is provided on a surface of the grinding fluid guide plate on the grinding stone side. Winding nozzle. 3. The winding nozzle for supplying a grinding liquid according to claim 2, wherein the grinding liquid rectifying plate is provided so as to be inclined with respect to the tangential direction of the grindstone.