SU559813A1 - Method of deburring, grinding and polishing parts - Google Patents

Description

one

The invention relates to the field of mechanical engineering and can be used to process a granular abrasive-polishing mass of small parts made by casting, stamping and other methods in order to remove external burrs and sandblasting, grinding and polishing them on external surfaces.

Known methods for processing parts are granulated with abrasive in a flexible stationary pre-compressed container, on which longitudinal vibration is applied.

However, this method will be highly productive only when processing forcibly mixed rolling surfaces, since only in this case significant values of the mixture of abrasive granules can be achieved relative to the surfaces to be processed, while processing parts into the pile, the productivity drops sharply.

There is also known a method of machining parts with a granular abrasive in rotation, around the vertical axis of a flexible cylindrical container, crimped by vras, which are parallel and parallel to the axis of rotation of the container by rollers.

In this case, it is difficult to achieve high processing performance, since it is not possible to create significant values for content compression.

the container with rollers and quickly wrapping the container, which makes it difficult to mix the granules and parts, and hence the processing as a whole.

The aim of the invention is to intensify the cutting processes while ensuring the necessary uniformity of the surface treatment of the parts.

For this, by communicating the granules and constantly varying relative speeds of movement with a simultaneous increase in the density of the working agent granules and the surface of parts, the crimping elements are moved in a plane perpendicular to the axis of rotation of the container along closed trajectories close to elliptical, with the possibility creating a one-way direction of rotation of the container.

FIG. Figure 1 shows schematically an apparatus for carrying out the proposed method; in fig. 2 - the trajectory of movement of each of the irregular plastids (in the working section of the trajectory, the resultant force A is shown; the interaction of the plates on the contents of the chamber at certain points in time and its components PI and 2)

The device for carrying out the method comprises a flexible cylindrical container 1 loaded onto 70-80% of the volume through one of the end openings with granules of the working

agent and workpieces, wherein the container can rotate around a horizontal axis.

The device also comprises parallel to the axis of rotation of the container crimping elements 2 in an amount of two or more, made, for example, in the form of flat rectangular plates.

When the method is realized, the crimping elements are moved in a plane, which is displaced to the axis of the container's direction of movement along closed trajectories close to elliptical.

When the jizhenin crimping elements are in the first quarter of the section of the elliptical trajectory facing the container, its contents are transmitted from each of the elements, smoothly varying from radial to tangential to the profile of the flexible cylindrical container. At the same time, starting from the moment of contact of the regional elements with the container's steak, the density of the interaction of the working angle grapules with the neighboring parts of the pair is lost from zero to the maximum. During this period, there is a processing of parts with all the increase-1, her performance. In case of dalping the movement of ae. On the second quarter of the container portion of the elliptical path, the contents of the container from each of the crimping elements are reported to be displaced, varying from tangential to radial to the profile of the flexible container. At the same time, a smooth decrease in the interaction of neighboring granules of the working agent and parts occurs. The processing capacity decreases and approaches the performance of the conventional tumbling processing method. Such character processing has after the release of the springs from the contact e with a flexible cylindrical container.

After contact with the container, the crimping elements are idling

along the section of the ellithic trajectory facing the opposite side of the container, before re-entering contact with the container, after which the process

repeats.

During the no-load period of the crimping elements, the container continues to rotate by inertia in the direction created by the crimping elements in the moment of contact with the container.

When specifying significant axes of elliptical paths, a high degree of intensification of cutting processes is achieved. With an increase in the radial (with respect to the container profile) axis of the elliptical trajectory, a high density of interaction between the working agent granules and the workpiece is achieved. With an increase in the tangent (with respect to the profile of the container) of the axis of the elliptical path, a significant increase in the area of contact of the working agent granules with the surfaces of the workpiece is achieved.

Claims (1)

Invention Formula The method of deburring, grinding and polishing parts with a granular abrasive-polishing mass in a flexible cylindrical container, which is rotated around a horizontal axis and compressed using crimping elements parallel to the axis of rotation of the container, characterized in that, in order to intensify the cutting processes by communicating granules and details of constantly varying relative speeds of movement with a simultaneous increase in the density of the impact of the working agent granules and the surface parts, crimping elements are moved in a plane, perpendicular to the axis of rotation of the container, along closed trajectories m, close to elliptical, with the possibility of creating a one-way direction of rotation of the container.