Diameter-variable CBN (Cubic Boron Nitride) grinding wheel

Abstract

The invention discloses a diameter-variable CBN (Cubic Boron Nitride) grinding wheel, which comprises an elastically-deformable grinding wheel basal body. A CBN layer is adhered to an external circumferential surface of the basal body. As the CBN layer is adhered to the elastically-deformable grinding wheel basal body, when the diameter-variable CBN grinding wheel is used, if the diameter of the grinding wheel becomes smaller due to grinding loss and does not satisfy with technological requirements, the basal body can be controlled to deform elastically to swell so as to ensure that the diameter of the grinding wheel satisfies with the technological requirements, so that workpieces can be continuously ground, and the diameter-variable CBN grinding wheel has the characteristics of high efficiency and high quality.

Description

technical field [0001] The invention relates to a grinding wheel for grinding. Background technique [0002] Globoidal Cam, also known as Roller Gear Cam, Worm Cam, Worm Cam, etc. In 1988, the term "Global Indexing Cam" was officially used in the GB "Terminology of Machine Theory and Mechanism" for approval. [0003] The profile of the arc cam is a non-developable helicoid in space, which is difficult to be expressed by mathematical equations. The most effective processing method is to simulate its working principle with machine tools. That is to say, the machine tool has a workpiece rotary axis (A axis), and the fixture is equivalent to the camshaft, which is installed on the A axis. The machine tool also has a rotary axis (B axis), which is equivalent to the driven axis, and the tool is equivalent to the roller. The distance between the A-axis and the B-axis is equal to the distance between the camshaft and the driven shaft. A-axis and B-axis simulate the movement law...

AI Technical Summary

Problems solved by technology

[0005] However, since the grinding wheel has only one grinding opportunity per revolution, instead of continuous grinding, the grinding efficiency of this grinding method is extremely low. It is mentioned at the end of the above-mentioned document that "the monthly output of this variety is kept above 50 sets", It is conceivable that the efficiency of this processing method is low

At the same time, due to the rotation of the grinding electric spindle, there is a certain amount of eccentricity, and the rotation of the spindle has a certain vibration. In addition, it is not continuous grinding, and the surface quality of the processed surface cannot achieve good results.

[0006] To sum up, the diameter of the grinding wheel in the prior art will continue to shrink due to the loss during the grinding process, which greatly affects the processing efficiency and processing quality of parts such as arc cams.

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