SU916274A1 - Device for burnishing and finishing workpieces - Google Patents

Description

The invention relates to the finishing, processing of metals by surface plastic deformation and can be used for the treatment of internal and external surfaces.

A device for finishing metal processing is known, in the case of which elastic pendants are located that carry spring-loaded holders with operating elements.

A disadvantage of the known device is that it is impossible for them to process parts on automatic machines, as well as to process external surfaces. ₅

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

The goal is achieved by the fact that _m holder by elastic hangers are rotatably mounted, and a housing made eccentric grooves intended to accommodate

2

elastic suspensions and turning them around its own axis.

FIG. 1 shows the proposed device; in fig. 2 is a section A-A to FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 is a view of B in FIG. one; in fig. 5 "the position of the deformable roller at the beginning of processing; in Fig.6, section G-D Fig. 5.

The device contains deforming rollers 1, located around the circumference, located in the holder 2, which are pivotally connected with adapter 4 by means of pins 3, and the latter are attached to elastic rods 6 of adjustable rigidity by means of pins 5. The rollers 1, in addition, in the upper part by means of a spring 7 are also attached to the rod 6. In turn, each rod 6 is installed in the eccentric groove of the interchangeable body 8 with a given eccentricity value (Fig. 4) and fixed in this case with the help of nuts 9 and

3 916274 4

ten . The mandrel 11 is also attached to the housing 8 by means of a nut 12. The rollers are fixed in holders with the help of pins 13 (FIG. 6).

The device works as follows.

The mandrel 11, having a tapered shank, is inserted into the spindle of the machine and fed to the workpiece 14. In this case, the deforming rollers 1 are in the position that forms the intake cone at an angle £ (Fig. 5). Further, having entered "in contact with the workpiece 14, the rollers 1 under the action of the force P and its component N are straightened), rotating

, around the axes of the pins 3, located in the holders 2, the spring 7 is compressed. The required working force is created by the spring 7 and the action of the elastic force of the rod 6. Rotating, the device processes either the outer or inner surface of the part 14. Then the device is retracted to its original position. Knowing the required working force, it is possible to determine the cross section of the elastic rod 6, its “overhang” b and the section of the spring 7 from known dependences of the theory of strength.

The proposed device can be used for the treatment of external surfaces (Fig. 1) and internal, for which the rods 6 are rotated 180 °.

5 Adjustment of the device to the size is carried out by moving the rods 6 in the slots of the housing 8. The rolling force changes are made by installing the rods 6 on

Yu different lengths and replaceable springs 7.

Claims (1)

Claim 13 Device for hardening clean. machining of parts, in the case of which there are elastic pendants carrying spring-loaded holders with work elements, which is 20 so that, in order to expand the technological capabilities of the device, the holders on the elastic suspensions are installed with the possibility of rotation, and in the case there are eccentric grooves designed to accommodate elastic suspensions and rotate them around their own axis.