Grinding device for grinding center hole

Abstract

The invention discloses a grinding device for grinding a center hole. The grinding device comprises a spindle assembly, a belt, a grinding wheel, a centering locking unit, a tail seat, a bed, a guide column, motors and a high-speed belt, wherein the motors comprise a gear motor and a high-speed variable-frequency motor; the spindle assembly comprises a high-speed spindle, a small eccentric shaft, a big eccentric shaft and a spindle casing; the centering locking unit is mounted on one side of the upper part of the bed, the grinding wheel is mounted at the upper end of the centering locking unit, and the spindle assembly is located at the upper end of the grinding wheel, is connected with the gear motor through the belt and is connected with the high-speed variable-frequency motor through the high-speed belt; the guide column is mounted at the upper end of the bed. The device has the advantages that the center hole is ground in a manner that a workpiece does not rotate and the grinding wheel moves in a full circle, and the grinding speed can be adjusted in a stepless manner according to requirements of size, hardness, precision and roughness of different parts, accordingly, the high work efficiency is achieved, and the quality of each batch of grinding is consistent; the grinding device has the characteristic of high machining precision and is suitable for mass production.

Description

technical field [0001] The invention relates to a grinding device, in particular to a grinding device for grinding a central hole. Background technique [0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinding machines use high-speed rotating grinding wheels for grinding, and a few use other abrasive tools such as oil stones and abrasive belts and free abrasives for processing, such as honing machines, superfinishing machine tools, abrasive belt grinders, grinding machines and polishing Grinders can process materials with higher hardness, such as hardened steel, cemented carbide, etc.; they can also process brittle materials, such as glass and granite. The grinding machine can be used for grinding with high precision and small surface roughness, as well as high-efficiency grinding, such as powerful grinding. The center hole grinder is a widely used grinder. In the existing center hole grinder, the workpiece rotates aro...

AI Technical Summary

Problems solved by technology

The center hole grinder is a widely used grinder. In the existing center hole grinder, the workpiece rotates around the grinding wheel. When the outer cylindricality of the workpiece is not high, the quality of the center hole obtained is low. At present, this principle is generally adopted in China. Design center hole grinder, the precision of the center hole is low, which reduces the economic benefit of the producer

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