SU1393558A1 - Honing head - Google Patents

Abstract

This invention relates to the field of mechanical engineering, in particular to finishing by honing. The aim of the invention is to increase the productivity and quality of processing. This goal is achieved by the fact that in a honing head comprising a housing with grooves in which pads with honing sticks are placed, having the possibility of radial movement and associated with a return spring, each block is provided with a mechanism for fixing it in a predetermined position. 2 Il.

Description

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The invention relates to the design of a machine, in particular to the field of finishing.

The aim of the invention is to increase labor productivity.

The goal is achieved by performing each bar with the possibility of fixation during processing.

Figure 1 shows the proposed honing head (cross section); figure 2 - the node I in figure 1 (the groove with the honing bar).

The hoop head contains a dielectric body 1 with grooves 2, inside which are located the outer electrodes 3, the inner electrodes (pads) A, between which there is an electrorheological suspension 5, the homing bars 6 and 7, the dielectric bushings 8 fixedly mounted in the electrode A , springs 9, connected with bars 6 and 7. Honing-bar bars B and 7 have different grain sizes. The bars can be located along the entire outer cylindrical surface of the honing head.

The principle of action of the honing head is that in the normal position the bars 6 and 7 are held in the groove with the help of springs 9. When the body 1 rotates, the bars 6 and 7 under the action of centrifugal lifting move out of the grooves 2. At the same time, they overcome the rigidity of the springs 9 Applying electrical voltage to electrodes 3 and 4 from a source of high voltage (not shown) increases the viscosity of the electrorheological suspension 5 and thereby slows down the bars in the slots. Depending on the requirements of the technological process, the electric field is removed from certain (pads) of the bars and they process the part. At the same time, the bars in the extended (working) position can also be held due to the electrorheological effect. Thereby, the processing process is intensified.

The head works as follows:

Insert the honing head into the hole of the workpiece. The electrodes 3 and 4 of the bars 6 impose an electric field and turn on the rotation of the honing head. When the bars 7 are set to their working position, they impose an electric field on the electrodes 3 and 4 of the bars 7 and hold them in the working position, i.e. bars 7 handle the part, and bars 6 are not involved in the processing. If it is necessary to change the grain size of the bars involved in the processing, remove the electric field from the electrodes 3 and 4 of the bars 7 and reduce the rotational speed of the honing head to the speed when the bars 7 under the Action of the springs do not pull into the slots. After that, remove the electric field from the electrodes

3 and 4 bars 6, then impose an electric field on the electrodes 3 and

4 bars 7 to keep them in the grooves, and increase the rotational speed of the honing head. When the bars 6 come out of the grooves and take up a working position, they impose an electric field on the electrodes 3 and 4 of the bars 6 and they process the part. Thus, any of the bars installed in the honing head can be turned on and off from it.

Claims (1)

Invention Formula A honing head comprising a housing with grooves in which pads with honing sticks are placed, having the possibility of radial movement and associated with a return spring, characterized in that, in order to improve performance and quality of processing, each one is provided with a mechanism for fixing it in a predetermined position . Cut (fs (ema ffemar / ib eight FIG. 2