JP2001198822A - Grinding fluid supply device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To supply a required amount of grinding fluid to a required portion of a grindstone rotating at a high speed and to effectively simplify the configuration. A nozzle means includes a nozzle member having an opening having a predetermined shape corresponding to a shape of a grinding portion. Separation wall members are disposed inside the nozzle member. Is done. The separation wall members 44, 46
The intervals are set different from each other from one end 34a of the nozzle member 34, and the required amount of the grinding fluid 30 can be supplied to a required portion of the grinding portion without being affected by the wind pressure due to the rotation of the grindstone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding fluid supply device for supplying a grinding fluid from above a grinding portion of a grinding wheel when grinding a workpiece by rotating a grinding wheel.

[0002]

2. Description of the Related Art Usually, a grinding apparatus for grinding various works using a rotating grindstone is employed. In this type of grinding apparatus, a grinding fluid supply device is used to supply a grinding fluid to a grinding point (grinding portion) of a workpiece by a rotating grindstone. This is because the cooling action of the grinding fluid prevents grinding burns, grinding cracks, and the like, and the cleaning function with the grinding fluid facilitates removal of grinding dust and the like.

[0003] At this time, it is desired to supply the grinding fluid accurately to the grinding point by the grindstone. In particular, when the grindstone rotates at high speed, wind pressure is generated by the grindstone and the grinding fluid is generated. In some cases, the grinding fluid cannot be supplied uniformly over the width direction of the nozzle, and there is a portion where the grinding fluid is not sufficiently supplied. As a result, there is a possibility that a defect such as grinding burn may occur due to insufficient grinding fluid.

Therefore, for example, Japanese Patent Application Laid-Open No. 6-320423
As disclosed in Japanese Unexamined Patent Application Publication No. H10-133, a grinding fluid supply winding nozzle provided with a grinding fluid guide plate having a surface parallel or substantially parallel to the circumferential surface of the grinding wheel downstream of the nozzle outlet from the grinding fluid is known. Have been.

[0005]

However, the above-mentioned nozzle according to the prior art is a winding nozzle suitable for an angular grinding machine, for example, a work having a spherical ground surface such as an inner member for a constant velocity joint. Is extremely difficult due to its structure. Thereby, when grinding a work having a spherical ground surface,
There is a problem that the grinding fluid cannot be reliably supplied to the grinding point. In particular, it has been pointed out that, in the case of a spherical ground surface having an uneven spherical center, in addition to baking due to poor supply of the grinding fluid, local wear of the grindstone and the like are caused.

SUMMARY OF THE INVENTION The present invention is to solve this kind of problem, and reliably supplies a grinding fluid to a high-speed rotating grindstone, and reliably prevents grinding defects of works having various shapes. It is an object of the present invention to provide a grinding fluid supply device that can simplify the above.

[0007]

In the grinding fluid supply apparatus according to the present invention, the nozzle means includes a nozzle body having a predetermined opening shape corresponding to the shape of a portion to be ground by the grindstone.
A plurality of separation wall members for dividing a flow rate of the grinding fluid supplied from one end communicating with the grinding fluid supply passage and leading the divided fluid toward the grinding portion are disposed inside the nozzle body. The plurality of separation wall members are set at intervals different from each other from one end side of the nozzle body communicating with the grinding fluid supply path, and inside the nozzle body, a plurality of flow rates each of which is set by the separation wall member. A passage is configured.

Thus, a required amount of grinding fluid can be reliably supplied to a required portion of the grinding portion.
It is possible to reliably supply the grinding fluid while avoiding the influence of wind pressure or the like to the grinding portion of the grindstone that is rotated at high speed, and to effectively prevent the occurrence of grinding burns and grinding cracks. Moreover,
It is only necessary to provide a plurality of separation wall members inside the nozzle body, and the configuration of the entire grinding fluid supply device is effectively simplified.

Further, the plurality of separation wall members are configured such that the separation distance between both ends is changed. For this reason, for example, when processing a spherical ground surface,
Regardless of whether the spherical center is equal or uneven, the grinding fluid can be reliably supplied to a desired grinding portion, and defective grinding can be prevented as much as possible.

[0010]

FIG. 1 is a schematic perspective explanatory view of a grinding machine 12 incorporating a grinding fluid supply device 10 according to a first embodiment of the present invention.

The grinding machine 12 has a drive shaft 1 of a motor 14.
The grinding wheel 18 is provided with a grindstone 18, which is used to grind the work 20. As shown in FIG. 2, the workpiece 20 has, for example, a spherical processing surface 22, and the spherical processing surface 22 is ground by the grindstone 18.
The grindstone 18 has a substantially disk shape, and a concave grindstone surface 26 corresponding to the spherical processing surface 22 is provided on an outer peripheral portion 24 of the grindstone 18.

As shown in FIGS. 1 and 3, the grinding fluid supply device 10 includes nozzle means 32 for supplying a grinding fluid 30 from above a grinding portion (grinding point) 28 of the work 20 by the rotating grindstone 18. The nozzle means 32 includes a nozzle member 34 and one end 34 of the nozzle member 34.
a is provided with a supply port 37 communicating with a supply pipe 36 serving as a grinding fluid supply path, and the supply pipe 36 is provided in a tank 40 via a pump 38. In this tank 40,
A predetermined amount of the grinding fluid 30 is stored.

The nozzle member 34 has the other end 34b opened toward the grinding portion 28, and an opening portion having a predetermined opening shape corresponding to the shape of the grinding portion 28, that is, an opening portion partially set in a cylindrical surface shape. 42. Nozzle member 34
Is formed in a semi-cylindrical shape as a whole, and an opening 42 inside the nozzle member 34 divides the flow rate of the grinding fluid 30 supplied from one end 34a side to divide the flow rate of the grinding fluid 30 into the other end 34b.
For example, two separating wall members 44, 46 are disposed for leading out from the side toward the grinding portion 28.

As shown in FIGS. 3 and 4, separating wall members 44 and 46 are provided within the nozzle member 34, for example, with bolts 4.
8 or is fixed at a predetermined position at a predetermined angle via an adhesive. The attachment positions and the attachment angles of the separation wall members 44 and 46 are set in order to supply a predetermined amount of the grinding liquid to the grinding portion 28 in the width direction of the grindstone 18.

In the first embodiment, as shown in FIG.
The spherical processing surface 22 of the work 20 is equally distributed to the left and right from the center by a distance S1 respectively, and the separation wall members 44 and 46 have a symmetrical inclination with respect to each other, and
4. In order to remove the influence of the wind pressure caused by the rotating grindstone 18, the separation wall members 44, 46 are separated from the one end 34a of the nozzle member 34 by different distances H1, H2.
(H1> H2) is set (see FIG. 3).

In the opening 42 of the nozzle member 34, first to third branch flow paths 50a to 50a through separation wall members 44 and 46 are provided.
50c is formed. First to third branch channels 50a to 5
The width dimension of each opening end of 0c is set to L1, L2, and L3, respectively, and has, for example, a relationship of L1 ≧ L3> L2.

The grinding fluid supply device 10 constructed as described above
Will be described below in relation to the grinding machine 12 incorporating the same.

First, as shown in FIG. 1, the pump 38 constituting the grinding fluid supply device 10 is driven, and the grinding fluid 30 stored in the tank 40 is supplied to the nozzle means 32 through the supply pipe 36. Sent. In the nozzle means 32, as shown in FIG. 3, the grinding fluid 30 is introduced from the supply pipe 36 into the opening 42 of the nozzle member 34.
The grindstone 18 and the grinding portion 28 of the work 20 are supplied from the other end 34b of the nozzle member 34 via the first to third branch flow paths 50a to 50c. On the other hand, the grindstone 18 is rotationally driven via a motor 14, and the spherical grinding surface 22 of the work 20 is ground by the concave grindstone surface 26 of the grindstone 18.

In this case, in the first embodiment, the whetstone 18
When is rotated at a high speed, the grinding fluid 30 can be supplied to a required location and in a required amount over the width direction of the nozzle member 34 to the grinding portion 28 of the grindstone 18. That is, as shown in FIG. 5, in the conventional nozzle member 2 having no separation wall members 44 and 46, the grinding fluid 30 supplied from the nozzle member 2 is subjected to the action of wind pressure generated by the high-speed rotation of the grindstone 18. , The flow rate decreases in the direction of arrow A. For this reason, the grinding fluid 28
0 is supplied unevenly, and there is a possibility that grinding burn or the like may occur on the grindstone 18.

On the other hand, in the first embodiment of the present invention, as shown in FIG. 3, the flow rate of the grinding fluid 30 on the first branch channel 50a side where the flow rate of the grinding fluid 30 tends to decrease is increased. 3
The separation wall members 44 and 46 are set at different distances H1 and H2 from the one end 34a of the nozzle member 34 so that 0 is sufficiently supplied over the entire area of the work 20 in the width direction. Further, in order to set the flow rate of the grinding fluid 30 to the center portion in the width direction of the work 20, the separation wall members 44, 46
The tilt angle of is adjusted.

As a result, in the first embodiment, a required amount of the grinding fluid 30 can be easily and reliably supplied to a required portion of the grinding portion 28 in the width direction of the grindstone 18 rotating at a high speed. The effect of effectively preventing breakage and the like and efficiently performing a good grinding operation is obtained. In addition, the separation wall members 44, 4
6, the configuration of the entire grinding fluid supply device 10 is effectively simplified and there is an advantage that it is economical.

FIG. 6 is a schematic longitudinal sectional view of a nozzle means 62 constituting a grinding fluid supply device 60 according to a second embodiment of the present invention. Note that the same components as those of the grinding fluid supply device 10 according to the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The nozzle means 62 is used when processing a work 66 using a grindstone 64 as shown in FIG. The workpiece 66 is unevenly distributed with the spherical processing surface 68 having different distances S2 and S3 to the left and right from the spherical center position, and the concave grindstone surface 70 is set to a shape corresponding to the spherical processing surface 68. ing.

As shown in FIG. 6, in the nozzle means 62,
The separation wall member 44 is disposed at a greater inclination than the separation wall member 46, and the separation wall members 44, 46 are set at different intervals H1, H2 from the one end 34a, respectively. First to third branch channels 50a to 50c
The width dimension of each opening end is set to L1 ', L2' and L3 ', respectively, and the flow rate of the grinding fluid 30 on the first branch flow path 50a side is smaller than the flow rate on the third branch flow rate 50c side. It is configured to be large.

In the nozzle means 62 constructed as described above, the flow rate of the grinding fluid 30 derived from the first branch flow path 50a corresponding to the wide distance S2 side of the work 66 corresponds to the narrow distance S3 side. The flow rate of the grinding fluid 30 discharged from the third branch flow channel 50c is set to be larger than the flow rate. For this reason, the grinding fluid 30 can be reliably supplied to a desired location and in a desired amount over the entire width direction of the spherical processing surface 68 in which the positions of the spherical centers are unevenly distributed. Further, the width dimension L of the open end of the second branch flow path 50b
By setting 2 ′ variously, it becomes possible to arbitrarily set the supply amount of the grinding liquid 30 to the center in the width direction of the spherical processing surface 68.

As a result, in the second embodiment, the spherical processing surface 68 of the workpiece 66 can be efficiently ground, and defects such as grinding burn can be effectively prevented. The same effect as that of the embodiment can be obtained.

In the first and second embodiments, the substantially semi-cylindrical nozzle member 34 is used. However, depending on the shape of the grinding portion 28 of the grindstone 18, the nozzle means 80 shown in FIG. You may. The nozzle means 80 according to the third embodiment includes a substantially rectangular nozzle member 82, and an opening 84 of the nozzle member 82 has a separation wall member 4.
4, 46 are arranged. The nozzle member 82 is provided with a rectangular opening 84, from which the grinding fluid 30 is supplied through the first to third branch flow paths 50a to 50c.

[0028]

In the grinding fluid supply device according to the present invention, a plurality of separation wall members are arranged inside the nozzle body corresponding to the shape of the grinding portion, and the plurality of separation wall members are:
The intervals are set different from each other from one end of the nozzle body that communicates with the grinding fluid supply passage. In particular, it is possible to effectively prevent the bias of the grinding fluid due to the wind pressure generated when the grinding wheel rotates at high speed. This makes it possible to reliably supply a required amount of grinding fluid to a required portion of the grinding portion, effectively preventing the occurrence of defects such as grinding burns,
The structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a schematic perspective explanatory view of a grinding fluid supply device and a grinding machine according to a first embodiment of the present invention.

FIG. 2 is a partial plan view of a grindstone and a work.

FIG. 3 is an explanatory sectional view of nozzle means constituting the grinding fluid supply device.

FIG. 4 is a bottom view of the nozzle means.

FIG. 5 is an operation explanatory view of a conventional nozzle member.

FIG. 6 is a partially sectional explanatory view of nozzle means constituting a grinding fluid supply device according to a second embodiment of the present invention.

FIG. 7 is a partial plan view of a grindstone and a work to which the nozzle unit is applied.

FIG. 8 is a perspective explanatory view of nozzle means constituting a grinding fluid supply device according to a third embodiment of the present invention.

[Explanation of symbols]

10, 60: Grinding liquid supply device 12: Grinding machine 18, 64: Grinding stone 20, 66: Work 22, 68: Spherical processing surface 26, 70: Concave grinding stone surface 28: Grinding part 30: Grinding liquid 32, 62, 80 ... Nozzle means 34, 82 ... Nozzle member 34a ... One end 34b ... Other end 42, 84 ... Opening 44, 46 ... Separation wall member 50a to 50c ... Branch flow path

Claims (2)

[Claims] When grinding a workpiece by rotating a grindstone, a nozzle means for supplying a grinding fluid from above a grinding portion by the grindstone, the nozzle means having one end communicating with a grinding fluid supply path, A nozzle body having the other end side opened toward the grinding portion, and a nozzle body set to a predetermined opening shape corresponding to the shape of the grinding portion; and a nozzle body disposed inside the nozzle body and supplied from the one end side. A plurality of separation wall members for dividing the flow rate of the grinding fluid and leading the flow from the other end side toward the grinding portion, wherein the plurality of separation wall members communicate with the grinding fluid supply passage. The grinding fluid supply device is set at different intervals from one end of the nozzle body. 2. The grinding fluid supply device according to claim 1, wherein a plurality of said separation wall members are formed by changing an interval between both ends thereof.