SU1386433A1 - Device for finish working of surfaces - Google Patents

Abstract

The invention relates to the rolling of the outer surfaces of parts such as rotation bodies with a deforming roller, whose own axis, when rotated around the axis of the mandrel, forms a double cone of rotation. The goal is to increase the durability of the working surface of the roller during operation of the tool, due to the periodic rotation of the roller around its own axis. The roller is mounted for rotation around its own axis inclined to the axis of the mandrel. The roller has a ring gear that is engaged with a spring-loaded sector, which is fixed on the axle with the possibility of swinging. A stop is located on the device plug, periodically disengaging the sector from the engagement with the ring gear. As a result, the roller is constantly rotated around the axis at a certain angle. 3 il. S (l

Description

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The invention relates to metal working and can be used for rolling outer surfaces of parts such as rotation bodies.

The aim of the invention is to increase the durability of the roller due to the periodic displacement of the zone of contact of its working surface with the surface of the part,

FIG. 1 shows the device section; in fig. 2 is a section A-A in FIG. one; in fig. 3-type B in FIG. one.

The plug 1 is fastened in the holder (not shown), the mandrel 2 is mounted in the bearings 3 placed in the plug 1. The bearing 4 is placed in the roller 5, and a deforming element 6 is installed on its inclined seat with the help of a thread from the support support 4, and the retaining ring 8 - the roller 5. The gear sector 9 is installed on the mandrel 2 by means of a hinged screw 10 and a nut 11. In the gear sector 9, springs 12 and the screw 13 with a lock nut 14 are freely installed. two screws 16. The support 15 is installed and locked captive nut 17, the axis 18, on which the bearing 19 is seated. The cover 20 protects the bearings 3 from axial displacement.

The device works as follows.

The tool body (holder) is installed in the tool holder. Attach the working movement details. From contact with the part, the roller 5 begins to rotate, and the mandrel 2 with an inclined cheek causes it to northwardly oscillating movements. At the end of each period of oscillatory movement of the roller 5 due to the contact of the screw 13 with the bearing 19, the kinematic connection of the roller 5 with the mandrel 2 is momentarily switched off. As a result, the roller 5 rotates around its own axis without swinging. When the gear sector 9 is engaged with the roller 5, the kinematic coupling is restored by the springs 12 and the oscillatory movement of the roller 5 along the axis of the workpiece continues.

Example. Processing of the workpiece on the machine 1K625.

Preparation material - Steel 45, HB 220-240 units; material of the working part of the roller - St, X12M, HPC 60-64 units; length of preparation is 100 mm; workpiece diameter 90 mm; roller diameter 120 mm; radius of the roller on the periphery of 3 mm; The angle of inclination of the roller axis to the axis of the mandrel Z.

Processing mode: the number of revolutions of the workpiece 200 rpm; rolling force 500 N; axial feed of the nakatnik 0.5 mm / rev; depth of the hardened layer is 0.2 mm.

Claims (1)

Invention Formula A device for surface finishing containing a fork-shaped holder with a mandrel fixed in it with the ability to grow and a deforming roller installed on the mandrel at an angle to its axis, which is so as to increase the resistance of the roller by periodically shifting its contact area working surface with the surface of the part, it is provided with a toothed sector mounted on the mandrel with a toothed sector fixed on the holder perpendicular to the axis of the mandrel with a stop for periodic contact with this sector, while the deforming roller is made with a toothed crown of internal engagement and is mounted on the mandrel rotatably, and the toothed sector is spring-loaded relative to the deflecting roller. 77 15 rs FI.1 eleven 5-2Fie.