Device for grinding high-precision outer circle

Abstract

The invention discloses a device for grinding a high-precision outer circle. The device comprises a left centre and a right centre which are arranged on an outer circle grinding machine. The left centre is composed of a left mandrel and a left top connected to the left mandrel, and a hard alloy insert A is arranged on the left top. The right centre is composed of a right mandrel and a right top connected to the right mandrel, and a hard alloy insert B is arranged on the right top. The left centre and the right centre are symmetrically arranged on the outer circle grinding machine, and the center line of the left centre and the center line of the right centre coincide with each other. According to the device, in the machining process, a machine tool drives a workpiece to rotate, and in the rotating process, as the hardness of the hard alloy insert A and the hardness of the hard alloy insert B are higher than the hardness of the workpiece, a material of the workpiece can be removed in a trace manner, inner chamfers at the two ends of the workpiece are amended, the problem that the rotating centers of the inner chamfers at the two ends and the rotating center of the machine tool are not located on the same line is avoided, and the high size precision and form and location tolerance requirements of the outer circle are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a device for grinding high-precision outer circles. Background technique [0002] When grinding the outer circle on the outer cylindrical grinding machine in mechanical processing, the processing characteristics of the machine tool determine the processing method, such as figure 1 As shown, when using the cylindrical grinder 5 to grind the workpiece 6, usually the two ends of the workpiece 6 are respectively machined with center holes or inner chamfers. Then use the left top 3 of the machine tool and the right top 4 of the machine tool to withstand the top hole or the inner chamfer of the workpiece 6 respectively for processing, and the grinding and detection of the outer circle of the workpiece 6 all use the inner chamfer at both ends of the workpiece 6 as a benchmark. Therefore, the precision of the internal chamfering at both ends of the workpiece 6 ...

AI Technical Summary

Problems solved by technology

However, due to the unavoidable errors when machining the inner chamfers at both ends of the workpiece 6, there is a problem that the rotation center of the inner chamfers at both ends and the rotation center of the machine tool are not on a straight line, which makes it difficult to guarantee the dimensional accuracy and shape tolerance of the outer circle.

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