JPH0725092B2 - Aggregate filling method in the manufacturing process of resin concrete - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of filling aggregate in a manufacturing process of resin concrete which is a new material for machine tool structural materials.

The conventional manufacturing process of resin concrete is
Similar to the production of cement concrete, it is common to knead the aggregate and binder in a stirrer and mold them into the mold, but to optimize the rigidity of resin concrete, the optimum filling of aggregate is required. For the purpose, first rock, sand, alumina,
There is already a method of manufacturing a resin concrete by filling an aggregate such as zirconia, silicon carbide or silicon nitride and then filling a binder such as an epoxy resin or a phenol resin.

[0003]

The application of resin concrete has recently been studied as a new material having thermal and mechanical properties greatly different from those of conventional materials because of the high precision of machine tools. It is a material. In the manufacturing process, there is a conventional method such as the above for the purpose of optimally filling the aggregate for increasing the rigidity of the resin concrete. After classifying into several types such as aggregate and fine aggregate, first, only the coarse aggregate is shake-filled into the mold, then the middle aggregate is shake-filled in the gap between the coarse aggregates, and finally the middle bone is filled. This is a method of vibrating and filling the space between the materials with fine aggregate.

According to this method, when filling the voids between the coarse aggregates with the medium aggregate or when filling the voids between the medium aggregates with the fine aggregate, the particle size classification, the vibration frequency, If conditions such as vibration acceleration are improper, filling is performed by layering from the bottom to the fine aggregate, medium aggregate, coarse aggregate, or uneven filling between each aggregate. The rate will decrease and the rigidity of the resulting resin concrete will decrease.

In view of the above points, the present invention provides a method of classifying particle sizes when filling the voids between the coarse aggregates with the medium aggregate or when filling the voids between the medium aggregates with the fine aggregate. Even if conditions such as vibration frequency and vibration acceleration are not appropriate, uneven filling between aggregates can be prevented, optimal filling is possible, and a highly rigid resin concrete can be manufactured. It is the one we are trying to provide.

[0006]

In order to solve the above problems, the method of the present invention is as follows. First, the mold is filled with aggregates such as rock, sand, alumina, zirconia, silicon carbide and silicon nitride, and then epoxy resin. In resin concrete manufactured by filling with a binder such as phenol resin, the aggregate is classified into several kinds of finer aggregate than coarse aggregate according to the particle size, and the aggregate is finer than coarse aggregate first. After the filled aggregate is vibrated and filled, when the later aggregate is filled in the mold,
An aggregate that is filled first is not passed through, but an aggregate that is filled later is placed on a previously filled aggregate with a filter having several holes sized to pass through, and the filter is added from above. It is characterized in that the aggregate to be filled next is excited while being vibrated from above the filter while being pressed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are views showing an embodiment of the steps according to the method of the present invention, in which 1 is a vibration table. 2 is a filling mold fixed on the vibration table 1; 3 is coarse aggregate; 4 is medium aggregate; 5 is a hole 6 sized not to pass the coarse aggregate 3 but the medium aggregate 4; A filter having several holes formed therein and a spring or a bolt 7 presses the filter 5 from above. Reference numeral 8 in the drawing denotes a vibration motor of the vibration table 1.

Next, the filling method of the present invention will be described with reference to the drawings. As shown in FIG. 1, a filling die 2 is placed on the vibration table 1.
Several kinds of aggregates such as rock aggregate, sand aggregate, alumina aggregate, zirconia aggregate, silicon carbide aggregate, silicon nitride aggregate, etc. which are mounted and fixed according to the particle size such as coarse aggregate 3, medium aggregate 4, fine aggregate (not shown) Then, the mold 2 is filled with only the coarse aggregate 3 while vibrating. Then, as shown in FIG. 2, the coarse aggregate 3 is not passed over the filled coarse aggregate 3, but a filter having several holes 6 through which the medium aggregate 4 is passed is placed, and the filter is placed from above. The medium aggregate 4 is excited and filled while being pressurized with the bolt 7. Further, even when the fine aggregate is filled, the coarse aggregate 3 and the medium aggregate 4 are not passed, but only the fine aggregate is filled with a filter having a number of holes sized to pass the same as before. I do.

As described above, by applying pressure from above the filter, it becomes difficult to move the positions between the already-filled aggregates, and the fine aggregates are filled only in the voids of the coarse aggregates. .

[0010]

According to the method of the present invention, the pores of the previously filled aggregate are prevented by using the filter having the holes through which the previously filled aggregate is not passed but the later filled aggregate is passed. When filling the later aggregate into the part, it becomes difficult to move the position between the coarse aggregates already filled due to the pressing force from above the filter, and the aggregate to be filled later is the coarse aggregate previously filled. It is filled only in the gaps between them, so even if conditions such as particle size classification, vibration frequency, vibration acceleration, etc. are not appropriate, uneven filling of fine aggregates becomes difficult and the filling rate increases. This is a useful invention because it makes it possible to manufacture resin concrete having high rigidity.

[Brief description of drawings]

FIG. 1 is a process drawing showing a state in which a mold on a vibration table is filled with coarse aggregate in a filling process of the method of the present invention.

FIG. 2 is a process diagram showing a state in which a filter is placed on the upper surface of the coarse aggregate in the filling step of the method of the present invention, and the medium aggregate is vibrated and filled while pressing the filter from above with a bolt. Is.

[Explanation of symbols]

 1 Vibration Table 2 Type 3 Coarse Aggregate 4 Medium Aggregate 5 Filter 6 Hole 7 Bolt

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Claims (1)

[Claims] 1. A resin concrete produced by first filling a mold with aggregates such as rock, sand, alumina, zirconia, silicon carbide and silicon nitride, and then filling with a binder such as epoxy resin and phenol resin. In, the aggregate is classified into several kinds of finer aggregates than coarse aggregates according to the particle size, and after the aggregates that have been previously filled into the finer aggregates than the coarse aggregate are vibratingly filled, When the aggregate is filled in the mold,
An aggregate that is filled first is not passed through, but an aggregate that is filled later is placed on a previously filled aggregate with a filter having several holes sized to pass through, and the filter is added from above. A method for filling an aggregate in a resin concrete manufacturing process, characterized in that the aggregate to be filled next is pressed while being vibrated from above the filter while being pressed.