Layered compression molding method and device for grinding wheel ring

Abstract

The invention relates to a layered compression molding method and device for a grinding wheel ring. The layered compression molding method for the grinding wheel ring includes the following steps that firstly, a molding material of the grinding wheel ring is divided into at least two parts, and the vertical height of a downward-pressing head is adjusted through a driving mechanism; secondly, the first part of the molding material is put into the portion between an inner mold ring and an outer mold ring, and the first part of the molding material is compressed in two directions; thirdly, an upward-pressing head moves upwards and is reset, the downward-pressing head is driven by the driving mechanism to move downwards, then the second part of the molding material is put into the portion between the inner mold ring and the outer mold ring, the second part of the molding material is compressed in two directions through cooperation of the upward-pressing head, the downward-pressing head and a first reverse compression mechanism, and then the third step is repeated until the nth part of the molding material is compressed, and all the parts of the molding material compressed in two directions jointly form a blank of the grinding wheel ring. According to the layered compression molding method and device for the grinding wheel ring, layered compression molding can be achieved on the grinding wheel ring, and then the difference of tissue densities of all positions of the grinding wheel ring is reduced.

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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