Laser trimming forming grinding wheel device and dressing method based on visual detection

Abstract

The invention provides a projection method contour detection-based laser finishing device for a formed grinding wheel. The projection method contour detection-based laser finishing device for the formed grinding wheel specifically comprises a computer (1), a backlight source (2), a three-dimensional mobile station (3), a fiber laser (4), a laser ablation head (5), the formed grinding wheel (6), agrinding machine (7), a telecentric lens (8), a CCD camera (9) and an image collecting card (10). By combining visual inspection and laser finishing, the high-efficiency, high-precision and automaticformed grinding wheel finishing process can be achieved, running is stable, the later device maintaining and operation expenditure is very low, a great number of labor costs can be saved, considerablebenefits are brought to an enterprise, and the production cost is greatly saved. Meanwhile, according to a method, great flexibility is achieved, rapid dismounting and mounting can be achieved, the environment requirement of a detected object is extremely low, operation is easy and convenient, different types of measuring can be adapted to, and flexibility is extremely high.

Description

technical field [0001] The invention relates to a method for dressing a grinding wheel, in particular to a device for dressing and shaping a grinding wheel based on visual detection and a dressing method thereof. Background technique [0002] As engineering ceramics, optical glass and cemented carbide and other difficult-to-machine materials are widely used in various key equipment, the grinding of various complex surface parts is gradually increasing, and various complex surface parts are formed by superhard Grinding wheel for grinding. Superhard forming grinding wheel refers to cubic boron nitride and diamond forming grinding wheel, such as figure 1 shown. It has very good grinding characteristics, such as: strong wear resistance, good thermal conductivity, extremely high hardness, etc., but it is precisely because of the above characteristics that the superhard formed grinding wheel has the above characteristics that make its dressing very difficult. Therefore, in orde...

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Problems solved by technology

[0003] Due to the wide variety of forming grinding wheels, the dressing methods used are also quite different. At present, the most common dressing method for forming grinding wheels is manual dressing, but this method has low dressing efficiency and it is difficult to ensure the contour accuracy after dressing.

Although many new finishing methods have appeared, such as: turning finishing method, grinding finishing method, roller dressing method, electric spark dressing method, online electrolytic dressing method, etc., there are still many shortcomings, such as: poor grinding performance, The shape accuracy of the grinding wheel is low, the dressing efficiency is low, the cost is relatively high, the processing environment requirements are high, and it is impossible to detect whether the dressing of the forming grinding wheel meets the standard in real time, the dressing accuracy is low, and it is not suitable for high-efficiency and high-precision dressing of the forming grinding wheel

[0004] At the same time, the contour detection technology of forming grinding wheel mainly observes the effect of grinding through super depth-of-field three-dimensional scanning microscope or directly grinding the workpiece. Therefore, it is necessary to remove the grinding wheel from the grinding machine before observation can be performed. The use process is cumbersome, and the equipment is expensive and the maintenance cost is relatively high.

Although the latter is cheaper than the former and is relatively easy to operate, the actual situation is that the contour dressing of the profile grinding wheel cannot meet the accuracy requirements in the first dressing, so it is necessary to remove the grinding wheel from the grinding machine and re-dress it. Then install it on a grinding machine for re-grinding to observe the effect of the workpiece after grinding. Although this method is relatively simple in operation, the workload is huge when it is implemented, which is not convenient for the factory to produce and process efficiently, and also affects the production progress.

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