SU599950A1 - Method of electroerosion profiling of grinding wheels - Google Patents

Description

one

The invention relates to the field of grinding and polishing, for example, to the profiling and dressing of grinding wheels on metal ties used in mechanical engineering for grinding a wide range of parts, in particular those having a complex profile (shaped cutters and cutters, compressor blades and turbines).

Methods are known for profiling and editing grinding wheels on metal ties.

The most effective of these is the method of electroerosioin profiling of grinding wheels with shaped electrodes using electrospark and electropulse power sources.

By this method, one pole of the power source is connected to the circle being processed, the other to the tool electrode. The required profile on the electrode tool is machined with a master cutter. The treatment is carried out in a dielectric medium, such as oil or kerosene.

As the outer surfaces of the yrash, ayush, their grinding wheel and the tool electrode come closer at the most closely located points of the wheel and the tool electrode, an arc discharge occurs, which helps to remove a certain amount of bond. The cumulative effect of single bits ensures the formation of a profile on the grinding wheel, the inverse of the profile of the electric tool.

The performance of electroerosive profiling on the moral of grinding wheels depends on the average operating current determined by the number of working pulses (impulses leading to

electrical discharges and contribute to their useful material removal) and their energy.

However, this method has a low processing performance on the finishing modes (up to 60) due to the fact that

The relative position of the grinding wheel and the electrode tool provides a small amount of processing.

The small processing area does not allow for efficient use of the generated

Claims (3)

the power source is mosh, nosti, almost 20-30% of the generated power is used. Therefore, in order to increase the processing capacity in practice, the power generated by the power supply is increased, and the pulse energy is increased. An increase in the pulse energy when dressing the grinding wheels leads to thermal destruction of abrasive, for example diamond, grains and an increase in the roughness of the surface of the grinding wheel, which in turn leads to a decrease in the durability of the grinding wheel and a deterioration in the quality of the grinding surface of the workpiece. The aim of the invention is to increase the productivity of the treatment during electroerosion, irophilation and iravka of grinding wheels while preserving the high quality of the digging and surface. To this end, the proposed method of electroerosion irophilation of grinding KpyiOB, i.kiochayush, him Brush, grinding wheel and electrode electrode, straightening is performed by a ring-shaped iistrumite with working surface, with a face surface, the diameter of the heart, I am over-sized with the help of a ring-shaped iistrumite with a face surface, face diameter and diameter. w, its electrode-istrumite with a slice, the enisme is the total axis of its vras axis, and its magnitude is mixed, it is determined from the condition of the guaranteed working gap. The invention is described in a drawing. According to the lime method and the surface of the grinding wheel 1, the surface of the grinding electrode is machined. 2. If the largest inter-electrode distance at which the breakdown of the interelectrode gap occurs is A, then the processing for the known method for determining the arc Bt is normal (B is used as a specimen on the wide spirits. By the proposed method, the outer surface of the grinding wheel 1 is treated with an inner surface electric tool 3. Under the same conditions, the continuous treatment of the proposed method is defined as the product of the arc length AK.A and the width of the circle. It is obvious that the length of the arc AK.A is significantly longer than the length of the arc VK, B, and accordingly, the continuous processing increases. With a grinding wheel diameter of 120 mm, a diameter of the electrode tool 130 mm and 2 mm plate, the processing using the known method is 8 times less than the plate, but the processing offered by the proposed method. An increase in processing, and it permits, to correct grinding wheels with greater magnitude among the working current, with a large number of working emulsions, which provides an increase in the productivity of the grading process while maintaining the high quality of the ground surface. When the grinding wheel was rotated, the APP 120X15X5X32 ASB2BO / 200 M59 100% grinding method was carried out using the lime method in the finishing mode and the 8 kHz electrical impulse frequency was achieved with a maximum removal rate of 60 with an average operating current of the LE abrasive layer increased to 90 mm- / min with an average operating current of 15A. Paibolse is effective in the proposed method of profiling when choosing a beating from the surface of a grinding wheel. In this case, the stretching areas and the surfaces of the circle in one turn are processed at an arc length 8 times longer than the treatment of the circle by the known method, this leads to the same increase in the removal rate of the metal abrasive layer. As a result, the time of EDM profiling of grinding wheels is reduced by 1.5-2 times. The invention of the method of electroerosive iofirovanie grinding wheels, carried out with the communication circle and iravatuyu electrode-and the tool of the movement of rotation, which means that, in order to increase productivity, the editing produces a ring-shaped electrode-tool with internal working surface, whose diameter exceeds the diameter of the circle, and the circle is placed inside the right-hand electrode electrode and offset relative to the axis of its rotation, and the magnitude of the displacement is determined from the condition of grounded working clearance.