Adjustable grinding device

Abstract

The invention discloses an adjustable grinding device which comprises a left nut, an outer sleeve, an adjusting shaft and a right nut. An inner tapered hole of the outer sleeve is combined with an outer tapered face of the adjusting shaft in a sleeved mode. The left nut and the right nut are relatively fixed on the adjusting shaft through bolts at the two ends of the adjusting shaft. Multiple straight grooves are formed in the periphery of the outer sleeve and boart sand is evenly cohered to the outer wall. When the grinding device is used for grinding, the grinding device penetrates into an inner hole of a metal part to be ground to rotate relatively and the grinding device and the metal part relatively move back and forth along the axis of the metal part so as to finish grinding. The adjustable grinding device is used for grinding and the inner hole of the metal part is not only ground, but also extruded. The inner hole of the metal part is smooth and possessed of higher surface roughness and precision. Grinding agents will not retain in pores of the surface of the inner hole of the metal part.

Description

technical field [0001] The invention relates to a grinding device, more particularly, the invention relates to a grinding rod. Background technique [0002] Use a grinding rod to grind the inner hole of the metal part, and the inner hole of the metal part can get higher surface roughness and precision. There are two kinds of grinding rods in the prior art: fixed type and adjustable type. When grinding, the abrasive is applied to the surface of the grinding rod or the surface of the inner hole of the metal part, and the grinding rod is inserted into the inner hole of the metal part to rotate relatively, and the grinding rod and the inner hole of the metal part are rotated relatively. The metal part realizes relative reciprocating motion along the axis of the metal part. Higher surface roughness and precision can be obtained after using the existing technology to grind the inner hole of the metal part. However, if the metal part is a casting, such as cast iron, the abrasive w...

AI Technical Summary

Problems solved by technology

Higher surface roughness and precision can be obtained after using the existing technology to grind the inner hole of the metal part. However, if the metal part is a casting, such as cast iron, the abrasive will remain after grinding due to the loose structure of the casting. In the pores of the inner surface of the metal parts, after the metal parts are assembled and used, the wear of the metal parts is accelerated during use, which shortens the service life of the metal parts

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