SU1449333A1 - Arrangement for applying soft antifriction metallic coatings - Google Patents

Abstract

The invention relates to devices for finishing friction surfaces, in particular to finishing antifriction non-friction processing. The purpose of the invention is to improve accuracy by eliminating distortions, expanding technological capabilities, by treating flat and shaped surfaces, and increasing durability by using a steel-steel friction pair. The device contains a rubbing roller 4 with helical grooves, rubbing the rubbing material supplied to the treatment area, containing metals or their alloys, the strength of which is lower than the strength of the treated surface. The roller receives rotational movement from the drive shaft 1 through; 1 donki 3, flanges G and a set of fingers 5 with elastic sleeves 6. Elastic sleeves 6 allow you to create a force pressing the roller to the workpiece, and also to compensate for possible distortions in the process. The flat surfaces are machined, for example, by a horizontal horizontal milling machine with the device installed on the mandrel of the machine. Cylindrical surfaces are machined on a lathe. The roller in this case reported rotation from a separate drive. 1 il. i (L 4 CO CO 00 co

Description

FIELD OF THE INVENTION The invention relates to devices for finishing friction surfaces, in particular, to finishing antifriction light abrasive treatment.

The aim of the invention is to increase accuracy by eliminating distortions, expanding technological capabilities by machining flat and shaped surfaces, and increasing durability by using a steel-steel friction pair.

The drawing shows the proposed device, the overall appearance.

Two flanges 2 are fixed to the drive shaft 1, fixed by rotation with respect to the shaft by keys 3. The roller 4 is connected to the flanges 2 by means of a set of fingers 5 fixed to the flanges 2 with one end and the other ends entering the elastic bushes 6 with the other ends x roller 4.

The device works as follows.

The twist moment 1 from the drive shaft 1 is transmitted through the keys 3 to the flanges 2, which, by means of a set of fingers 5, transfer the torque to the roller 4 through elastic sleeves 6. Simultaneously with the rotational movement, the roller 4 is driven parallel to the surface being processed in the direction perpendicular to the axis of the roller . Due to the screw grooves on the roller, when the roller moves along the workpiece perpendicular to the axis of the rubbing roller and rotates about its axis, the applied coating material containing metals or their alloys, whose strength is lower than that of the surface to be machined, is rubbed on the surface to be processed in two mutually perpendicular directions x, both in the direction of the relative movement of the tool and the workpiece, and in the direction of the axis of the roller. The presence in the device of elastic sleeves 6 allows you to create a force pressing the tool to the workpiece by reciprocating the tool and workpiece in the direction normal to the machined surface, and also to compensate for possible distortions between the direction of the reciprocal movement of the tool-part pair and the plane tangential to the workpiece.

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surface. At the same time, not only minor inconsistencies between the treated plane and the axis are eliminated.

 tool, but also the skew between the plane to be machined and the direction of mutual movement of the tool and part. In the proposed device, the force of pressing the tool to the part during processing at all processing points is stabilized (the sleeves act as spring elements with the force directed along the normal to the surface being treated). The proposed device solves the problem of applying metallic coatings on flat surfaces by a friction method with a stabilized pressing force of the tool against the rod during the entire treatment period.

Machining flat surfaces

using the proposed device, it is advisable to produce on a horizontal milling machine with the installation of the device on the mandrel stan20

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five

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five

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ka, their joint rotation, as well as the mutual movement of the tool and part parallel to the machined plane and perpendicular to the axis of the roller.

With the help of the device, cylindrical surfaces can also be machined by placing the workpiece in the spindle of a lathe, and the proposed device can be mounted in a special tool with the drive shaft rotating from a separate drive. It is possible to process the shaped profiles when moving the workpiece relative to the proposed device along the copier while maintaining constant contact between the rubbing roller and the workpiece.

By creating the possibility of applying soft anti-friction metal coatings on the flat friction surfaces (flat metal-cutting and forging and pressing equipment), it is possible to replace steel-bronze friction pairs by steel-steel friction pairs while reducing wear of parts.

Claims (1)

Invention Formula A device for applying soft anti-friction metal coatings containing rigidly bonded to  1A493334 casing drive shaft with rubbing the use of a pair of steel-steel friction the element and the mechanism of the elastic complementary rubbing element are produced in the form movement, about t and a roller with screw grooves, so that, with the aim of the latter, is installed on the increase in accuracy due to elimination of the shaft with a gap, and the mechanism of elastic no distortions, expansion of the technology-additional movement made opportunities due to machined eccentrically located ki flat and shaped surfaces, the axis of the device sleeves with fingers for increase in longevity due to the fixing of the roller to the body.