JP2005254414A - Grinding fluid supplying method and grinding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for sufficiently, properly and stably supplying grinding fluid to both of a grinding wheel work surface and a grinding wheel side surface. <P>SOLUTION: The grinding device has a grinding wheel for grinding a surface of a ground article, and a grinding fluid supplying nozzle for supplying the grinding fluid to the grinding wheel. The grinding fluid supplying nozzle forms a nozzle tip end portion in a fork shape across the grinding wheel. Grinding fluid supplying ports are respectively formed at positions opposite to the grinding work surface of the grinding wheel and its side surface in the nozzle tip end portion. The grinding fluid is simultaneously and generally vertically supplied to the grinding work surface and the side surface of the grinding wheel. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a grinding liquid supply method and a grinding apparatus using the same method.

In the grinding process, grinding is performed while supplying a grinding liquid to a grindstone of a grinding apparatus for the purpose of suppressing or removing generated grinding heat. The generated grinding heat is suppressed by the lubricating effect and the eye removal effect of the grinding fluid, and the generated grinding heat is removed by the cooling effect of the grinding fluid. In order to obtain the effect of such a grinding fluid, grinding is usually performed by supplying the grinding fluid to the grindstone working surface. (For example, see Patent Document 1).
JP-A-7-241770

  However, in the grinding process, basically both the grindstone working surface and the grindstone side face are related to the grinding process, and therefore it is necessary to supply a sufficient amount of grinding fluid to both of them.

  Conventionally, sufficient attention has been paid to the supply of the grinding liquid to the grindstone work surface, but the supply to the grindstone side surface has not been considered much. As a result, grinding burn on the side surface of the grinding wheel often becomes a problem in grinding operations where the grinding phenomenon on the side surface of the grinding wheel has a large effect, such as shape grinding and groove grinding.

  Moreover, in the recently developed ultra-smooth grinding method, the grinding wheel cutting is fine, but grinding near the grinding wheel side surface is also important, so it is necessary to perform grinding while supplying the grinding fluid to the grinding wheel side surface However, if the supply of grinding fluid is not appropriate, ultra-smooth grinding has become difficult.

  For this reason, regarding the supply of the grinding liquid, it is important to develop a method for supplying the grinding liquid sufficiently and stably to both the grindstone working surface and the grindstone side surface.

  In the current grinding fluid supply method, it is not considered that the grinding fluid is sufficiently supplied to both the grinding wheel working surface and the grinding wheel side surface, which causes many problems. Therefore, the present invention has an object to develop a method and an apparatus for supplying a grinding liquid sufficiently and stably to both the grindstone working surface and the grindstone side.

  Therefore, in the present invention according to claim 1, in the grinding fluid supply method for supplying the grinding fluid to the grinding wheel for grinding the surface of the workpiece, the grinding fluid is simultaneously supplied to the grinding work surface and the side surface of the grinding stone. It was to be.

  Further, in the present invention according to claim 2, in the present invention according to claim 1, the grinding liquid is supplied substantially perpendicularly to the grinding work surface and its side surface.

  According to a third aspect of the present invention, there is provided a grinding apparatus comprising a grinding wheel for grinding a surface of an object to be ground and a grinding fluid supply nozzle for supplying a grinding fluid to the grinding wheel, wherein the grinding fluid supply nozzle is the grinding stone. The nozzle tip is formed in a bifurcated shape across the nozzle, and the grinding fluid supply port is formed at a position facing the grinding work surface of the grindstone and the side surface of the nozzle tip.

  In the present invention, since the grinding liquid is stably supplied to the grindstone working surface and the grindstone side surface as compared with the conventional feeding method, the finished surface of the workpiece is finished in a good state even under the same grinding conditions. be able to.

  In addition, since the grinding fluid is sufficiently supplied to the side surface of the grindstone, it is possible to prevent deterioration of the grindstone working surface on the side surface of the grindstone and to increase the life of the grindstone even under the same grinding conditions.

  A grinding apparatus according to the present invention includes a grindstone that rotates to grind the surface of an object to be ground, and a grinding fluid supply nozzle that supplies a grinding fluid to the grindstone.

  The grinding liquid supply nozzle has a nozzle tip portion that is bifurcated across the grindstone, and a grinding fluid supply port is formed at a position facing the grinding work surface of the grindstone at the nozzle tip portion and its side surface.

  And in this invention, it is made to supply a grinding liquid to the grindstone which grinds the surface of a to-be-ground object using a grinding liquid supply nozzle.

  In the grinding liquid supply method, the grinding liquid is simultaneously supplied perpendicularly to the grinding work surface and the side surface of the grindstone.

  In this way, in the present invention, since the grinding fluid is simultaneously supplied not only to the grinding work surface of the grindstone but also to the side surfaces thereof, the work surface can be finished in a good condition even under the same grinding conditions as before. Moreover, deterioration of the grindstone working surface on the side surface of the grindstone can be prevented, and the life of the grindstone can be extended even under the same grinding conditions.

  Hereinafter, a grinding apparatus and a grinding fluid supply method according to the present invention will be specifically described with reference to the drawings.

  As shown in FIG. 1, a grinding apparatus 1 according to the present invention includes a grindstone 3 for grinding the surface of a workpiece 2 and a grinding fluid supply nozzle 4 for supplying a grinding fluid to the grindstone. The structure of the grinding fluid supply nozzle 4 is characteristic.

  Examples of the workpiece 2 include metals (iron and steel, non-ferrous metals) and non-metals (ceramic, glass, plastic) and the like.

  The grindstone 3 is formed in a disc shape, and an abrasive grain cutting edge 6 is formed on a grinding work surface 9 on the outer peripheral portion thereof, and is attached to a rotating shaft 5 linked to a rotary motor.

  As shown in FIGS. 1 to 3, the grinding liquid supply nozzle 4 has a bifurcated nozzle tip 8 across the grindstone 3 at the tip of the nozzle body 7 having a grinding fluid water guide having a rectangular bowl shape in cross section. The nozzle tip 8 covers the upper part from the grinding point on the side surface of the grindstone 3.

  The grinding fluid supply nozzle 4 has grinding fluid supply ports 11 and 12 formed at positions facing the grinding work surface 9 and the side surface 10 of the grindstone 3 at the nozzle tip 8.

  The grinding fluid supply nozzle 4 feeds the grinding fluid vertically from the grinding fluid supply port 11 at the central portion toward the grinding work surface 9 of the grinding stone 3 and also from the grinding fluid supply ports 12 and 12 on both sides. The grinding fluid is supplied vertically toward the side surface 10 of the machine.

  The grinding apparatus 1 is configured as described above, and when performing the grinding process, the grinding wheel 3 is rotated in a state where the grinding wheel 3 is in contact with the surface of the workpiece 2 and at the same time, the grinding fluid is supplied. Grinding fluid is supplied from the grinding fluid supply port 11 at the center of the nozzle 4 toward the grinding work surface 9 of the grindstone 3 substantially vertically, and from the grinding fluid supply ports 12 and 12 on both sides to the side surface 10 of the grinding stone 3. The grinding fluid is supplied almost vertically.

  FIG. 4 shows the results of a comparative experiment of the ultra-smooth grinding finished surface between the case of grinding with the grinding apparatus 1 having the above configuration and the case of grinding with a conventional grinding apparatus.

  In the case of a conventional grinding apparatus, brittle fracture marks are observed on the finished surface of the silicon carbide ceramic workpiece, and the finished surface roughness is also about 100 nm (three-dimensional roughness of 256 μm × 256 μm). On the other hand, in the case of the grinding apparatus according to the present invention, no noticeable brittle fracture marks are observed, and the finished surface roughness is about 30 nm. Thereby, the effectiveness of the grinding device and the grinding fluid supply method according to the present invention was confirmed.

The perspective view which shows the grinding device which concerns on this invention. The perspective view which shows a grinding fluid supply nozzle. FIG. Comparative experiment results. (a) is the graph which displayed the surface state in the case of a conventional grinding device three-dimensionally. (b) is the graph which displayed the surface state of the X direction at the time of a conventional grinding device. (c) is the graph which displayed the surface state of the Y direction at the time of the conventional grinding device. (d) is a graph that three-dimensionally displays the surface state when the grinding apparatus according to the present invention is used. (e) is the graph which displayed the surface state of the X direction at the time of the grinding apparatus based on this invention. (f) is the graph which displayed the surface state of the Y direction at the time of the grinding apparatus based on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Grinding device 2 Object to be ground 3 Grinding wheel 4 Grinding fluid supply nozzle 5 Rotating shaft 6 Disc 7 Nozzle body 8 Nozzle tip 9 Grinding work surface
10 sides
11,12 Grinding fluid supply port

Claims (3)

In a grinding liquid supply method for supplying a grinding liquid to a grindstone for grinding the surface of an object to be ground,
A grinding fluid supply method, wherein the grinding fluid is supplied simultaneously to a grinding work surface and a side surface of a grinding wheel.   2. The grinding fluid supply method according to claim 1, wherein the grinding fluid is supplied substantially perpendicularly to the grinding work surface and its side surface. In a grinding apparatus having a grindstone for grinding a surface of an object to be ground and a grinding liquid supply nozzle for supplying a grinding liquid to the grindstone,
The grinding fluid supply nozzle has a bifurcated nozzle tip that straddles the grinding wheel, and a grinding fluid supply port is formed at a position facing the grinding work surface of the grinding wheel and the side surface of the nozzle tip. A grinding device characterized by the above.

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