Electric current variable effect grinding method and its grinding device

Abstract

A grinding method and apparatus based on electric rheologic effect feature that the free abrasive particles are added to the particles suspended electric rheologic liquid to obtain grinding medium, a grinding tool with sharp cones on its surface is sued as an electrode of electric field, a porous metallic plate between grinding tool and workpiece is used as another electrode of electric field, and a 1000-5000 V / mm voltage is applied across said two electrodes.

Description

technical field [0001] The invention relates to a grinding processing method and a processing device, in particular to a method of using electrorheological fluid to mix free abrasives as abrasives and applying the electrorheological effect to form tiny free abrasive pellets and distribute them on the surface of the grinding tool substrate, thereby improving the grinding accuracy of ultra-smooth surfaces and Efficient electrorheological grinding method. [0002] The invention also relates to a device used in said electrorheological grinding method. Background technique [0003] With the electronicization of information and the high-speed and large-capacity of photoelectric signal transmission, the demand for optoelectronic products that integrate electronic technology and optical technology is increasing, such as CD / DVD optical reading head, optical / electrical (PD) in optical fiber communication And electrical / optical (LD) signal converters, projectors, laser printers, molec...

AI Technical Summary

Problems solved by technology

[0008] The problems existing in the existing free abrasive processing method are as follows: the moving speed, trajectory, and residence time of free abrasive particles between the grinding tool and the workpiece cannot be effectively controlled, and the free abrasive on the interface between the grinding tool and the workpiece has only a large size. The free abrasive particles produce processing effect, and a considerable part of the small-sized free abrasive has not interfered with the surface of the workpiece, that is, it is separated from the interface between the grinding disc and the workpiece, resulting in low grinding accuracy and efficiency

For the free abrasive processing method of grinding, the key to improving the processing efficiency and processing accuracy of free abrasive is how to ensure that the contact interface between the grinding tool and the workpiece has a uniform abrasive concentration distribution, and can maintain this state stably for a long time. Neither chemical nor chemical grinding methods can do this, thus affecting the precision and efficiency of ultra-smooth surface grinding.

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