Method for polishing grinding wheels

Abstract

The invention discloses a method for polishing grinding wheels, which comprises the following steps: the parts to be removed on the grinding wheels to be polished are cut by laser to form preset curved surfaces on the grinding wheels. The grinding wheels are polished by the laser, so as to realize the accurate polishing for the grinding wheels through the accurate control on cutting tracks of a laser beam and accurately obtain the curved surfaces of the required grinded parts of the grinding wheels, thereby avoiding the errors caused by the manual polishing, improving the accuracy and the quality of the curved surfaces at the edges of the grinding wheels and improving the success rate of polishing; meanwhile, the parts of the grinding wheels, on which the focuses of the laser can arrive, can be cut, however, the laser beam can not be damaged, the laser cutting tracks can not be lost, so that the cutting output of the laser for the grinding wheels can not cause errors in the polishing process, namely, the cutting errors can be reduced to a lower level so as to improve the polishing accuracy of the grinding wheels, batch polishing can be realized for the grinding wheels in the same type, and extremely good consistency among a plurality of grinding wheels can be kept. In addition, for the mode of laser grinding for the grinding wheels, the speed is higher, the working efficiency of grinding the grinding wheels is improved, and the cost of manual polishing is saved.

Description

technical field [0001] The invention relates to the technical field of precision tool grinding wheels, and more specifically, relates to a method for repairing grinding wheels. Background technique [0002] In some precision tool processing technology fields, such as the grinding wheel required for the processing of micro-tools, the shape accuracy of the grinding wheel required is very high. Now the commonly used grinding wheel dressing methods are as follows: figure 1 As shown in , the machine tool is manually controlled by very experienced personnel, and the coarse-grained secondary grinding wheel 1 (such as a silicon carbide grinding wheel) is used to grind with the fine-grained grinding wheel 20 to be trimmed, and the dotted line shadow shown in the figure is ground. Unneeded part 27, the part that stays forms required predetermined curved surface topography (as figure 2 Shown is the cross-sectional profile of the predetermined surface topography). Due to the high pre...

AI Technical Summary

Problems solved by technology

However, due to the difference in the grinding control of each grinder for each point in the actual grinding, the grinding wheel is different for each person or each time the grinding is done, which makes the cutting tool products different, and the quality of batch products is different. Consistency is poor

[0006] 2. It is difficult to meet the precision requirements, and multiple repairs are required for precise control:

For this level, it will be very difficult to grind the fine grinding wheel with a mechanical coarse grinding wheel.

Even if it is operated by very experienced workers, it is difficult to accurately trim to this kind of precision. In actual production, this kind of grinding is in a state of fuzzy precision control

[0008] 3. Not programmable:

But for the grinding wheel required for precision tools, this method is not feasible, because the coarse grinding wheel itself will also be ground, and the dressing process is actually the process of two grinding wheels being ground each other. How much the auxiliary grinding wheel 1 is worn is different every time, which makes the grinding feed amount of a corresponding step in the program change, resulting in the final shape not being the target shape, and the replication effect cannot be achieved

[0010] 4. Complicated assembly and disassembly:

[0011] Due to the large size of the existing grinding wheel grinding machine, it is not suitable to directly grind the grinding wheel on the machine tool. It is necessary to remove the grinding wheel from the machine tool and then carry out grinding on the grinding wheel grinding machine, which is troublesome.

Moreover, for some types of machine tools, the main shaft of the grinding wheel cannot be unloaded together with the grinding wheel. It is also necessary to perform secondary positioning of the grinding wheel with high clamping accuracy to ensure the grinding wheel’s stability. Coaxiality, otherwise it will cause a significant drop in machining accuracy

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