CN-114643360-B - Preparation tool and preparation method of annular component

CN114643360BCN 114643360 BCN114643360 BCN 114643360BCN-114643360-B

Abstract

The invention provides a preparation tool and a preparation method of an annular component, wherein the preparation tool is used for forming the annular component and comprises a mounting plate group, the mounting plate group is provided with a mounting cavity, powder to be formed is placed in the mounting cavity, a first groove is formed in the bottom of the mounting plate group, a positioning hole group is formed in the side part of the mounting plate group, a mounting cover plate is detachably arranged at the top of the mounting plate group and is positioned at an opening of the mounting cavity, the mounting cover plate is provided with a second groove, a concave part of the second groove and a concave part of the first groove are oppositely arranged to enclose a cylindrical cavity, and a positioning column is inserted in the positioning hole group and is positioned in the cylindrical cavity. According to the technical scheme provided by the invention, the technical problem of high forming cost of the annular part in the prior art can be solved.

Inventors

LI RUNFENG
WU YUFEI
ZHOU WEIPING

Assignees

浙江东阳东磁稀土有限公司

Dates

Publication Date: 20260505
Application Date: 20201217

Claims (3)

1. A preparation method of an annular component is characterized by adopting a preparation tool for forming the annular component, and the preparation tool comprises a mounting plate group (10), a positioning column (30) and a positioning hole group, wherein the mounting plate group (10) is provided with a mounting cavity, a first groove (11) is formed in the mounting cavity, a positioning hole group is formed in the side part of the mounting plate group (10), a mounting cover plate (20) is detachably arranged at the top of the mounting plate group (10), the mounting cover plate (20) is positioned at the opening of the mounting cavity, the mounting cover plate (20) is provided with a second groove (21), a concave part of the second groove (21) is arranged opposite to a concave part of the first groove (11) to enclose a cylindrical cavity, the positioning column (30) is inserted into the positioning hole group, the positioning column (30) is positioned in the cylindrical cavity, the positioning hole group comprises a first positioning hole (17) and a second positioning hole (18), the first positioning hole (17) and the second positioning hole (18) are detachably arranged at one end of the positioning column (30), and the other end of the positioning hole (18) is detachably arranged opposite to the first positioning hole (18): installing the positioning column of the preparation tool in the positioning hole group of the preparation tool; adding permanent magnetic powder into the installation cavity through an opening of the installation cavity of the preparation tool; Installing the installation cover plate of the preparation tool at the opening of the installation cavity of the preparation tool; Placing the preparation tool on a pressing platform of a forming machine and performing pressing operation; The method for adding the permanent magnetic powder into the mounting cavity comprises the steps of calculating the weight of the required permanent magnetic powder according to the size of the annular component, and adding the required permanent magnetic powder into the mounting cavity by adopting a secondary feeding method; The method for adding the needed permanent magnetic powder into the installation cavity by adopting the secondary feeding method comprises the following steps: Feeding the mounting cavity for the first time, and enabling the added permanent magnetic powder to reach the position tangent to the lower circular arc of the circular hole of the positioning hole group of the preparation tool; installing the positioning column of the preparation tool in the positioning hole group of the preparation tool; and feeding materials into the mounting cavity for the second time, and scraping the permanent magnetic powder in the mounting cavity.
2. The method for manufacturing an annular member according to claim 1, wherein after the pressing operation is completed on the manufacturing tool, the method for manufacturing an annular member further comprises: Removing the mounting plate group and the mounting cover plate to obtain a molded product with the positioning column; Trimming the formed product with the positioning column; and after trimming, filling the molded product with the positioning column into a vacuum packaging bag for hydrostatic pressurization.
3. The method of producing an annular member according to claim 2, wherein after subjecting the molded product with the positioning column to static pressure pressurization, the method further comprises: Allowing the molded product with the positioning column to stand for a preset period of time; taking out the positioning column after the stress in the molded product with the positioning column is reduced; And (5) carrying out furnace charging sintering on the annular component.

Description

Preparation tool and preparation method of annular component Technical Field The invention relates to the technical field of preparation of annular components, in particular to a preparation tool and a preparation method of the annular components. Background At present, the powder compression molding technology is a traditional and novel process technology, and can be used in the technical fields of various materials from traditional ceramic materials to modern nanometer materials, and the like. In the field of modern material applications, shaped and endless products have become a common form of material application. In general, a method for molding an annular member, particularly an annular member, is required to form a cylindrical structure, then machine-draw a central hole, and machine-draw the central hole twice to obtain a blank of the annular member. However, the molding method of the circular ring product in the prior art wastes materials and is not beneficial to reducing the production cost. In addition, for the material molding process of getting the mesopore, the larger the diameter of the mesopore is, the easier the realization is, but under the condition that the diameter of the mesopore is smaller than 30mm and the wall thickness of the circular ring is smaller than 5mm, the difficulty of the existing molding hole-getting is greatly improved, the eccentric condition is easy to appear, the lower rate of finished products is caused, and meanwhile, the working efficiency of the molding process is lower. Disclosure of Invention The invention mainly aims to provide a preparation tool and a preparation method of an annular component, so as to solve the technical problem of high forming cost of the annular component in the prior art. In order to achieve the above object, according to one aspect of the present invention, there is provided a preparation tool for molding an annular member, the preparation tool comprising a mounting plate group having a mounting cavity for placing powder to be molded therein, a first groove provided at the bottom of the mounting plate group, a positioning hole group provided at the side of the mounting plate group, a mounting cover plate detachably provided at the top of the mounting plate group, the mounting cover plate being located at an opening of the mounting cavity, the mounting cover plate having a second groove, a recess of the second groove being disposed opposite to a recess of the first groove to enclose a cylindrical cavity, and a positioning column inserted into the positioning hole group, the positioning column being located in the cylindrical cavity. Further, the mounting plate group comprises a mounting bottom plate, a first mounting side plate, a second mounting side plate, a third mounting side plate and a fourth mounting side plate, wherein the mounting bottom plate is provided with a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected, the first mounting side plate is detachably arranged on the first side edge of the mounting bottom plate, the second mounting side plate is detachably arranged on the second side edge of the mounting bottom plate, the third mounting side plate is detachably arranged on the third side edge of the mounting bottom plate, the fourth mounting side plate is detachably arranged on the fourth side edge of the mounting bottom plate, and the mounting bottom plate, the first mounting side plate, the second mounting side plate, the third mounting side plate and the fourth mounting side plate form a mounting cavity. Further, the positioning hole group comprises a first positioning hole and a second positioning hole, the first positioning hole and the second positioning hole are oppositely arranged, one end of the positioning column is detachably arranged in the first positioning hole, and the other end of the positioning column is detachably arranged in the second positioning hole. The mounting plate comprises a mounting plate group, a plurality of first grooves, a plurality of second grooves and a plurality of second grooves, wherein the plurality of first grooves are arranged at intervals along the extending direction of the mounting plate group, the plurality of second grooves are arranged at intervals along the extending direction of the mounting plate, the plurality of second grooves are arranged in one-to-one correspondence with the plurality of first grooves, and each second groove and the corresponding second groove enclose a corresponding cylindrical cavity. Further, the locating hole group is a plurality of, and a plurality of locating hole groups and a plurality of cylindricality cavitys one-to-one setting, and each locating hole group is located corresponding cylindricality cavity. Further, the powder to be molded is made of a magnetic material, and the positioning posts are made of a non-magnetic conductive material. According to another aspect of the invention,