JPH0663870A - Rotary grinding wheel disk and its manufacture - Google Patents

Abstract

PURPOSE:To remove burrs and scraps on the cut surfaces of an iron material by providing multiple recesses of rotary grinding wheel mold products at random on the side surfaces of the rotary grinding wheel disks. CONSTITUTION:After rotary grinding wheel mold products 2 and 2' are molded by male and female metal molds, they are overlapped and put in a burning furnace to heat for solidification. In this case, plates 5 with multiple protrusions on their flat surfaces at random are inserted between the overlapped rotary grinding wheel mold products 2 and 2'. Next, the rotary grinding wheel mold products 2 and 2' are recessed by the self-weight action of the rotary grinding wheel mold products 2 and 2' and the plates with multiple protrusions on their flat surfaces at random in the overlapped process and also by the protrusions 4 and 4' of the plates 5 with multiple protrusions on their surfaces at random due to baking and variation in volume by heating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary grindstone machine having a side surface recessed with a rotary grindstone molding compound and a method for producing the rotary grindstone machine.

[0002]

2. Description of the Related Art In a rotary grindstone used for grinding or cutting, a rotary grindstone molding compound is planarly formed on both sides of a reinforcing net which is embedded to improve the strength or durability of the rotary grindstone. What is to be sintered is
It is presented in Japanese Patent No. 3144.

[0003]

However, since both sides of the conventional rotary grindstone are parallel planes, when the iron material or the like is cut along the circumference of the rotary grindstone, it appears on the cut surface of the iron material. Since the burrs and burrs cannot be removed, it was necessary to separately remove the burrs and burrs with an offset grindstone after cutting. Further, the burr and the burr are like a sharp blade and are dangerous. Further, during the cutting work, there is a drawback that the flat material rubs the iron material to increase the grinding resistance, and the heat generation amount increases accordingly.

[0004]

In order to eliminate the above-mentioned drawbacks, the rotary grindstone of the present invention is a rotary grindstone in which rotary grindstone moldings are heated and solidified on both sides of a mesh sheet. A large number of recesses are formed in the molded product. And, the method of manufacturing the rotary grindstone machine is such that after molding the rotary grindstone molding compound by male and female molds, stacking the rotary grindstone moldings and putting them in a firing furnace to heat and solidify the rotary grindstone molding. Stacked by randomly sandwiching a plate with many protrusions on the plane between the polymerization of the objects, the self-weighting effect in the stacking process of this rotating grindstone molded product and the plate with many protrusions randomly on the above surface, and firing and heat solidification By recessing the rotary grindstone molding compound by the projections of a plate having a large number of projections randomly on the plane in the volume change in the step, it is possible to randomly provide a large number of concave parts of the rotary grindstone molding on the side surface of the rotary grinder. It was done.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 is a plan view of a rotary grindstone of the present invention, FIG. 2 is a sectional view of the rotary grindstone, FIG. 3 is an explanatory view of manufacturing the rotary grindstone, and FIG.
5 is a partial view of a perforated iron plate, FIG. 5 is an explanatory view of manufacturing a rotary grindstone, and FIG. 6 is a partially enlarged cross-sectional view of the rotary grindstone.

In FIG. 3, an inner bottom portion of a female die 1 for molding a rotary grindstone is first filled with an abrasive grain and a compound 2 containing a phenol resin or the like as a binding material of the abrasive grain, and its upper surface. The reticulated sheet 3 serving as a reinforcing material for the rotary grindstone is placed on the reticulated grindstone, and the reticulated sheet 3 is then filled with the compound 2'of the abrasive grains and the binder in the same manner as described above.
A mesh sheet 3 is interposed between the lower layer formulation 2 and the upper layer formulation 2 '. Next, the filling is pressed from above by the female die 1'to obtain a rotary grindstone molding. The rotary whetstone moldings formed in this way are stacked and fired in a firing furnace to heat and solidify. At the time of this stacking work, both sides of the rotary whetstone moldings are projected on upper and lower planes with a diameter of about 6 mm. Stacks by sandwiching plates with a thickness of about 0.6 mm in which a large number of 4'4 'are randomly projected. Although not shown, at the time of this stacking work, for example, aluminum foil, paper, or the like, which is colored or colored with a heat-resistant ink that withstands a temperature of about 200 ° C.
A label material such as a non-woven fabric and a synthetic resin film is sandwiched between the center parts of the rotary grindstone molding. As shown in FIG. 5, on the side surface of the rotating grindstone plate, an iron plate was formed on the side surface of the rotating grindstone due to its own weight effect in the stacking step of the rotary grindstone molding and the plate 5 having a large number of projections randomly on the plane and the volume change in the step of baking and heating and solidifying. While a layer 7 that is pressed and hardened is formed, recesses 6 of a relatively hard grindstone molding are formed by recessing the rotary grindstone molding compound by the projections 4 and 4'of the plate 5 having a large number of projections randomly on the plane. It can be installed on both sides of the rotary grinder.

[0007]

EFFECTS OF THE INVENTION According to the method of the present invention, it is possible to easily form the relatively hard concave portion 6 of the rotary grindstone molding by denting the rotary grindstone molding compound in the parallel plane portion of the rotary grindstone machine. In the case where an iron material or the like is cut using the rotary grindstone manufactured by the method of the present invention, burrs and burrs appearing on the cut surface of the iron material are formed in the recesses when the iron grindstone is ground by the circumferential portion of the rotary grindstone. It is possible to scrape off at the end, and since the grinding width can be kept in the recess 6 though it is a little, eliminate the disadvantage that the iron material rubs on the flat parts on both sides of the rotary grinder to increase the grinding resistance and increase the heat generation amount. It has the effect of being able to

[Brief description of drawings]

FIG. 1 is a plan view of a rotary grindstone of the present invention.

FIG. 2 is a sectional view of a rotary grindstone.

FIG. 3 is an explanatory diagram of manufacturing a rotary grinder.

FIG. 4 is a partial view of a perforated iron plate.

FIG. 5 is an explanatory diagram of manufacturing a rotary grinder.

FIG. 6 is an enlarged view of a partial cross section of a rotary grindstone.

[Explanation of symbols]

 1-female mold 1'-male mold 2,2'-compound 3-mesh sheet 4-protrusions 4'-protrusions 5 plate with multiple protrusions randomly on plane 6-recesses 7-hard part

Claims (2)

[Claims] 1. A rotary grindstone machine for heating and solidifying a rotary grindstone molding on both sides of a mesh sheet, wherein a large number of concave portions of the rotary grindstone molding are randomly provided on the side surfaces of the rotary grindstone machine. 2. When a rotary whetstone molding compound is molded by male and female dies, the rotary whetstone moldings are stacked and placed in a firing furnace to be heated and solidified, a flat surface is formed between polymerizations of the rotary whetstone moldings. Randomly stacked on the plane by sandwiching plates with a large number of protrusions at random, and by the self-weight effect in the stacking process of this rotating grindstone molded product and the plates with protrusions on a plane randomly, and the volume change in the process of baking and heating and solidifying. A method for manufacturing a rotary grindstone machine, wherein a large number of recesses of the rotary grindstone molding are randomly provided on the side surface of the rotary grindstone machine by denting the rotary grindstone molding compound with the projections of a plate having a large number of projections.