SU622653A1 - Method of vibration-machining of articles - Google Patents

Description

one

The invention relates to mechanical engineering and can be used in the vibro-processing of parts, mainly in a complex form.

There is a known method of vibro-processing of parts that are complicated by means of balls, in which, with respect to individual parts of the part, there are additional elements ensuring the change of the trajectory of movement of the balls.

However, the known method does not allow high-quality processing of non-rigid parts.

The purpose of the invention is to prevent the non-rigid parts from warping.

This is achieved due to the fact that the additional elements are placed on the side of the non-rigid parts of the part and are made of the condition that the energy of impact of the balls on the work surface can be changed.

FIG. 1 shows a variant of processing a part forcibly rotated in a filler according to the described method; in fig. 2 - processing option for the described method details, freely placed in the container.

According to the described method, the workpiece 1 with a non-rigid

part 2 with fastening (figure 1) or freely (fig, 2) is placed in container 3. Then the processing material (filler) is loaded into the container in the drawing, not showing n. Steel balls, steel or cast iron, etc. are used as fillers.

On the part of non-rigid parts of the part, additional elements 4 are installed on the device 5 (Fig. 1) or directly on the part that is freely loaded into the container, on those parts that are allowed not to be processed (Fig. 2).

He is processing the test part, analyzing its initial and obtained geometry, ilo the nature of the deformation of the non-rigid part 2 (i.e. by changing

Claims (1)

The initial flatness of the convexity or concavity of its surfaces is determined by the surface that has received increased residual compressive stresses. If such a surface was flat before vibro-processing, then after it it becomes convex. If the surface was convex, it remains the same, but it becomes more convex, and if it was concave, it can remain concave (with a decrease in concavity) or the concavity was insignificant), this surface may become flat or even convex. When processing the subsequent test parts 1 on the side of the non-rigid part 2, where increased surface residual compressive stresses were detected (and where it is therefore necessary to reduce the intensity of the filler effect on the surface of the part 1), an additional element 4 is placed. layers of filler, which are normal to this surface of the THICKNESSES, are surface-producing and, as a matter of fact, decrease the total energy of the surface impact during the process of vibro-processing be filler particles. For example, for the part according to FIG. 2, due to the additional element 4, the filler layer is normal to the outer surface of the non-rigid part 2 of part 1, in section A-A is equal to h (mm). In most cases, the placement of an additional element 4, ensuring that the filler layer has the same thickness normal to the surface on one (a) and other (b) sides of the non-rigid part 2 of part 1, eliminates its distortion. However, the magnitude and character of the distribution of stresses in the surface layers of one and its opposite second side of the non-rigid part 2 of part 1 arising in the preceding operations are also affected by the magnitude and nature of the contour. Therefore, the optimal shape, size and location in relation to the non-rigid part 2 of part 1 of the additional element 4, on which the reduction of the filler's thickness normal to the surface of the part to depend on 3 parts of different parts of the non-rigid part, is additionally specified or 1 assessed, determining the surface layers on one and the other side of the non-rigid part 2 of part 1, or, which is simpler, empirically, during the vibration treatment of subsequent test pieces. So, if the production of an additional element 4 after processing the first test piece 1 reduced warping, but did not eliminate it completely, then additional element 4, for example, welds the metal in order to further reduce the thickness of the filler layer on that side of the non-rigid part 2, where they still have place is somewhat elevated in (superficial residual compressive onions, strands, and vibro-processing of the second test piece 1). Thus, the additional element 4 is refined until the desired results are obtained. Method of vibro-processing of parts, predominantly} of complex shape, by means of balls, in which relatively separate parts have additional elements for changing the trajectory of movement of balls, characterized in that in order to prevent distortion of non-rigid parts of parts, additional elements are placed on the side / non-rigid parts of the part and are made of them subject to the possibility of changing the energy of impacts of the balls on the surface being treated | chnost. Sources of information taken into account in the examination: 1. USSR Copyright Certificate 390927, cl. On 24 May 31/06, 1971. Y / 7j j X // y / -e U / 7L U7 / 77 / 7L .t