SU823094A1 - Roller-type burnishing tool - Google Patents

Description

(54) RIDING

I

The invention relates to metalworking and can be used in the processing of holes by surface plastic deformation.

Known rolling, containing the mandrel, a separator with deforming rollers and a tapered bushing connected to a mechanism for adjusting the diametrical size of the rollers installed with the possibility of contact with the wedge copier 1.

With this design, it is not possible to machine holes with a diameter varying in length.

The purpose of the invention is the expansion of technological capabilities.

The goal is achieved by the fact that bosses are made on the mandrel, in shaped grooves of which a quill is inserted with axial displacement with a longitudinal groove for accommodating a copier, the latter is made in the form of plates, and the quill is provided with a support roller.

This embodiment expands the technological possibilities of rolling.

FIG. 1 shows the rolling, general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. 1. The rolling contains an armature 1, in the central hole of which a spring 2 and a brush 3 are placed with a fixed conical bearing bushing 4 around which deforming rollers 5 are evenly mounted in the separator 6. The separator 6 is connected to a threaded sleeve through thrust ball bearings 7 8 fixed in the mandrel 1 by a lock nut 9 .. The axial position of the rod 3 is set by the lever 10, which is pivotally mounted on the mandrel 1 and has a contact roller 11 and an eccentric 12. The contact roller 11 is pressed by spring force 2 to the copier

the form of plates 13-16, fixed in a groove quill 17 with nuts 18, screws 19 and springs 20. At the front end of the quill 17 is fixed a bracket 21 with a support roller 22. The quill is installed in the hole

Claims (1)

lugs 23. For braking quilts 17, a friction clutch 24 is installed in the hole of the chuck 23, pressed against quill 17 by a spring 25. The tuning of the rolling is carried out as follows. The average diameter of the rolling, determined by the deforming rollers 5, is adjusted using a threaded coupling 8. The relationship between the size of the tuning diameter of the rolling and the distance of the deforming rollers from the end of the product is determined by the profile and installation of the plates 13-16. Thus, the copier plate 13 defines rolling of the rolling into the hole, plate 14 - rolling along the thickened wall, plate 15 - rolling along the thin wall, plate 16 - rolling of the rolling out of the hole and reducing the diameter of the rolling for its subsequent withdrawal from the treated hole. Rolling works as follows. In the initial position, the quill 17 is pushed forward to failure. With a rotating part or tool, the axial feed of the rolling is brought to the product — the support roller 22 abuts the butt and the quill 17 with the copier plates 13-16 begins to move relative to the mandrel 1 and the lever 10 exactly in accordance with the movement of the rolling relative to the product, and the contact roller 11 repeat the profile of the plates 13-16, through the lever 10 and the brush 3 changes the diameter of the rolling in a given relationship. At the end of the stroke, the contact roller 11 slides over the final protrusion of the plate 16 (the highest in the entire profile of the copier) and the diameter of the rolling decreases to a value smaller than the diameter of the machined hole. By turning the eccentric 12, the lever 10 is fixed in this position and the rolling is led out of the hole. Pinol 17 can be pushed to its original position or with an emphasis when retracting rolling out of the hole or after the final retracting of rolling by any device. Thereafter, by turning the eccentric 12, the lever is turned up to the stop of the contact roller 11 in the copier plate 13. The cycle is repeated. The application of the proposed rolling can significantly improve the processing accuracy by taking into account all the factors that influence the deviation of the processing diameter from a given value. Rolling comprising a mandrel, a separator with deforming rollers and a tapered bushing connected to a mechanism for adjusting the diametrical size of the rollers installed with the possibility of contact with a wedge copier, characterized in that, in order to extend technological capabilities, the mandrels are shaped, the grooves of which are installed with the possibility of axial movement introduced into rolling the quill with a longitudinal groove intended for placing a copier in it, while the latter is made in the form plates, and the quill is equipped with a support roller. Sources of information taken into account in the examination 1. Konovalov, EG, et al. Chistova, and strengthening rotational surface treatment, Minsk, 1968. p. 309-311, fig. 200 S sj W 20 FIG. 2 Fig.d