SU411963A1 - - Google Patents

Description

one

The invention relates to the field of size-finishing machining and the pressure of external cylindrical surfaces.

Known devices for machining and pressing the outer surfaces of the shafts, comprising deforming tools and a cutting head. The treatment of non-rigid shafts with the use of such devices, as a rule, is carried out using ordinary lunettes or lunettes embedded in the block of deforming tools.

However, it is not always possible to handle long shafts of small diameter due to intense vibrations causing the cutting tool to be blasted.

The purpose of the invention is to create a device for processing non-rigid, long shafts of small diameters, which provides a dynamically stable cutting process and pressure on machines of normal accuracy.

This is achieved by applying an additional self-adjusting support with built-in elastic elements having a non-linear elastic characteristic.

FIG. 1 shows the described device, a general view; in fig. 2 - a support with a cutter; in fig. 3 - self-regulating with the support.

The combined machining of non-rigid shafts consists of three ball rubbers I-3, a support 4 with a cutter, a self-adjusting support 5, a ring 6 and an installed plate 7. The support with a cutter (see

FIG. 2) it is a housing 8, a screw 9 and a slider 10 carrying the cutter 11. A limb 12 with a divide value of 0.01 mm is provided for mounting the cutter to a predetermined size.

The self-adjusting support (see Fig. 3) consists of a rod 13, from one end of which a support ring 14 is provided with an elastic insert 15 made of caprone. Two rubber elastic elements 16 and 17 are installed on the bar 13. A glass 18 with covers 19 and 20 is installed in the housing 21. The device for the combined processing of non-rigid shafts works as follows. In the “static setting cutter” mode

set to size using caliper 4 (see Fig. 1). Further, turning is performed to a predetermined size of the process shank at the shaft end. After that, the cutter returns to its original position and

the required rolling force is established; in this case, a combined machining and cutting is performed on a length of 50-80 mm. The support ring 14 is then mounted on the machined surface.

(see FIG. 3) and the shaft is completely machined. When the shaft is machined, the rod 13 with the support ring 14 encircling the machined surface performs adaptive reciprocating movements in the radial direction when the machining process interacts with the elastic elements 16 and 17, working with them according to the "compression-tension" scheme.

Such adaptive movements reduce the relative intensity of the relative movements of the tool and parts in the direction of the size to be maintained.

Subject matter

A device for combined machining of non-rigid shafts, containing three ball throwers, a support with a cutter, characterized in that, in order to reduce the intensity of the relative oscillations of the tool and part, it is equipped with a built-in self-adjusting support that holds the surface to be machined and is made, for example, in the form of elastic elements with nonlinear characteristic. "

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FIG. 2

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Fig 3