SU425767A1 - THE DEVICE FOR POLISHING THIN-WALLED PIPES - Google Patents

Description

one

The invention relates to the field of metal cutting.

Devices for grinding thin-walled tubes are known, made in the form of a rotating drum with a grinding head attached to it with the OPPORTUNITY of the planetary movement. In so doing, the pipe to be machined is pulled along guide rollers. However, in the case of processing particularly thin-walled pipes (on the order of tenths of a millimeter), it is necessary to prevent possible deformation of the product.

In order to eliminate this drawback, a drum carrying a grinding head is proposed to provide with a steady rest, which, rotating synchronously with the grinding head, with its own pressing rollers resists the effects of cutting forces.

Pa figs. 1 shows the proposed device; in fig. 2 and 3 - drum with grinding HEAD and cuts.

The device consists of a stationary drum 1 with an internal gear crown 2. Pa motionless drum 1 is mounted on a movable drum 3, which was driven from an electric motor 4 by means of a V-belt transmission 5. In a movable drum 3 on rollers 6 a replaceable driving roller 7 is installed, having a rotational drive from gear 8, engaging

with internal gear crown 2 fixed drum 1.

In the grooves of the rolling drum 3, the rolls of the driven rollers 9 and 10 are used to tension and change the angle of coverage of the abrasive belt 11 when grinding the pipe 12. In addition, in the grooves of the rolling drum 3 there is a counterweight 13 and a steady 14, consisting of bracket 15 and slide 16,

having the POSSIBILITY of radial movement with the help of an adjusting screw 17. In the slide 16, the gland rollers 18 are in contact with the ground pipe 12.

The pipe 12 is fed with two planks of replaceable drive rollers 19 with annular strands corresponding to the diameter of the grinded pipe.

The rotational drive of each pair of rollers is individual or common - from a multi-stage reversing gearbox 20. Interchangeable wiring 21 is installed between two pairs of rollers 19, selected according to the diameter of the grinded pipe.

The grinding process of a thin-walled pipe is as follows.

The pipe 12 is introduced into the stream of the drive rollers 19 and then through the wiring 21. To smoothly move the pipe into the wiring of the second pair of rollers, the branch of the abrasive belt 11 is manually pulled aside.

Turning on the electric motor 4 drives the drum 3 to rotate, with the gear 8 starting to run around the internal gear 2 of the fixed drum 1. Thus, the planetary motion is imparted to the abrasive belt 11.

In this case, the gland rollers 18 of the Lüneg And are in contact with the ground pipe 12 from the diametrically opposite side with respect to the applied cutting force, excluding possible deformations from the cutting forces.

Subject invention

A device for grinding fine-grained pipes, made in the form of a rotating drum with a fixed on it with the possibility of a planetary movement of the grinding head, characterized in that, in order to avoid deformation during the processing of particularly thin-walled pipes, the drum is equipped with

mounted on the face of the lunet, the gland rollers of which are opposite the point of application of cutting forces.

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