Layered pressing molding method and molding device for grinding wheel ring

Abstract

The invention relates to a grinding wheel ring layered pressing molding method and a molding device. The grinding wheel ring layered pressing molding method includes the following steps. The first step is to divide the molding material of a grinding wheel ring into at least two parts, and adjust the upper and lower positions of the lower pressure head through a driving mechanism. Height; the second step is to put the first molding material between the inner ring of the mold and the outer ring of the mold, and carry out two-way pressing on the first molding material; the third step is to move the upper pressure head up and reset, and drive the lower pressure through the driving mechanism The head moves down, and then the second part of the molding is put into the inner ring of the mold and the outer ring of the mold, and the second part of the molding is bidirectionally pressed through the cooperation of the upper and lower pressing heads and the first reverse pressing mechanism, and then the third step is repeated , until the pressing of the nth part of the profile is completed, and the profiles completed by the two-way pressing of each part together form the blank of the grinding wheel ring. The invention provides a grinding wheel ring layered pressing forming method and a grinding wheel ring layered pressing forming device which can make the grinding wheel ring layered pressing and forming and thereby reduce the difference in structure density between each position of the grinding wheel ring.

Description

technical field [0001] The invention relates to a layered pressing forming method and a forming device of a grinding wheel ring. Background technique [0002] Ceramic superabrasive products such as grinding wheels occupy an important position in the field of grinding, and their specific structures are as follows figure 1 Shown: It includes the base body 1 and the abrasive layer fixed on the base body through the adhesive 2, corresponding to the superhard material grinding wheel with a diameter within a certain size range, the abrasive layer is usually an integral grinding wheel ring 3, and the grinding wheel ring is a finished product Participating in the main part of the grinding process, the preparation process of the grinding wheel ring directly affects the performance and processing quality of the product. The pressing molding process is a crucial process in the abrasive preparation process, which has a direct impact on the uniformity of the finished grinding wheel ring....

AI Technical Summary

Problems solved by technology

The existing problems of this molding method are as follows: 1. The two-way pressing is realized step by step, and there is a difference in the magnitude of the two pressures, which makes it difficult to control the density consistency in the thickness direction of the profile. The steps in the process are cumbersome, and the positioning of the mold is easily affected during the process of removing the lower pad, which affects the uniformity of the formed product. In addition, when the two-way pressing is realized, the inner ring of the mold does not go down together with the press head 2. This pressing method makes the density of the upper and lower parts of the grinding wheel ring larger than that of the middle part, especially under the condition of large pressing thickness, the tissue density difference is large, and the internal There is a large stress, which makes the grinding wheel ring prone to defects such as cracks and large deformation during the firing process. At the same time, the consumption speed of the grinding wheel ring is different during use, which affects the performance and processing quality of the product; 3. Manually The molding material is put into the mold cavity, which is easy to cause uneven distribution of the molding material, and the stability of manual scraping is poor. This phenomenon is more obvious when pressing a thicker grinding wheel ring.

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