Large-diameter inner hole polishing device for castings

Abstract

The invention relates to the technical field of polishing, and discloses a large-diameter inner hole polishing device for castings. The polishing device comprises a rotating shaft; a fixing chuck is fixedly connected to the outer side of the rotating shaft; a guide ring is fixedly connected to the outer side of the fixing chuck; polishing pieces are movably connected to the two sides of the guidering; and arc-shaped holes are formed in the polishing pieces. According to the large-diameter inner hole polishing device for the castings, a movable plug drives a pushing rod to operate, an electromagnet and a magnetic block are used in cooperation, when an arc-shaped clamping piece moves outwards, a guide rod pushes the pushing rod to move outwards under the action of the centrifugal force, meanwhile, a second sliding block is pulled to move rightwards, at the moment, the relative area of a positive plate and a negative plate is gradually increased, and the circuit voltage is gradually increased, so that the magnetism of the electromagnet is gradually increased, the effect of controlling the polishing pieces to move outwards through the magnetism is achieved, the polishing area of a polishing stone is increased, the purpose of automatically adjusting the diameters of polished inner holes is achieved, and the polishing efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of grinding, in particular to a grinding device for large-diameter inner holes of castings. Background technique [0002] Castings are metal shaped objects obtained by various casting methods. After the castings are cooled, they are polished and other subsequent processing methods. During the machining process of the castings, the inner holes of the castings need to be polished to improve the installation accuracy. The existing grinding device Most of them are manual operations, and it is impossible to choose a suitable grinding head for grinding the diameter of the casting hole, resulting in time-consuming and labor-intensive grinding. [0003] When grinding holes in castings, it is necessary to choose a grinding stone. Only by choosing a suitable grinding stone for grinding can the accuracy of casting installation be improved, and ensure that the casting will not be installed due to uneven grinding, which ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a large-diameter inner hole grinding device for castings, which has the advantage of automatically adjusting the diameter of the grinding hole and will not loosen the installation hole due to the excessive size of the grinding stone, and solves the difficulty in selecting the grinding stone. The problem of choosing the right grinding stone accurately

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