SU1310178A1 - Tool for working deep bores - Google Patents

Abstract

The invention relates to the processing of products by grinding, aims to expand the technological capabilities of the tool and can be used for finishing the deep holes of small diameter. The tool contains a carrier part 1, made of corrugated wire, on which elastic brackets 4 are rigidly mounted, in which cutting elements 5 are placed, Brackets 4 are made with the possibility of fixing cutting elements 5 in the axial direction and provide the ability to change cutting elements 5, which allows to use cutting elements 5 made of various materials. 4 il. (L co oo

Description

113

The invention relates to the processing of products by grinding and can be used for finishing machining of deep holes of small diameter.

The purpose of the invention is to expand the technological capabilities of the tool by ensuring the shift of the cutting elements.

Fig, 1 shows a tool, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 and 4 - section BB in FIG. 1 (mounting bracket options)

The tool contains a carrier part 1, made of corrugated spring wire. The corrugated section of the tool (Fig. 1) is formed by several rectangular teeth (corrugations) 2. The tool also has end flat linear sections. On the sides 3 of the corrugations 2 arranged parallel to the axis of the tool, elastic brackets 4, made of spring steel, are rigidly fixed and have a trough-shaped form with an opening for mounting the cutting elements 5. The width of the opening C of the bracket 4 must be equal to

C (0.8-0.9) d

p.

where dp is the diameter of the cutting elements

Such a ratio between the dimensions of the opening width and the diameter of the cutting element to be installed allows them to be reliably fixed and easily replaced. The brackets are made with the possibility of fixing the cutting elements in the axial-direction, for which, at the ends of the brackets 4, there are projections with curved ends 6 (FIG. 2). The ends of the cutting elements abut against the curved ends 6. The brackets 4 are fastened by soldering. On the cutting elements 5, flats can be removed (figure 4).

In order to increase the reliability of fastening the brackets 4 on the carrier part 1, grooves are made on the surface of the chassis.

782

for wire placement (Figs. 3 and 4). Moreover, the grooves can be performed as on the inner surface of the bracket

4 (FIG. 3) and on its outer surface (FIG. 4).

When assembling the tool on the sides 3 of the corrugations 2 of the carrier part 1 parallel to the axis of the tool, elastic braces 4 are rigidly installed by soldering.

The cutting elements 5 are placed on the opening of the staples 4 and by pressing them from above they are inserted inside the trough-shaped staples 4. The edges of the opening of the staples 4 elastically diverge by the value of the diameter of the cutting

elements 5 and grasp them tightly. Curved ends 6 prevent axial shearing of the cutting elements

5 in the processing.

The removal of the cutting elements 5 for their replacement is carried out either manually or using simple tools, such as pliers and the like.

The proposed design allows to expand the technological capabilities of the tool, since it is possible to install cutting elements from a variety of materials, such as wood, glass, etc., which expands the range of processed materials.

materials.

Claims (1)

Invention Formula A tool for machining deep holes of small diameter, containing a carrier part made in the form of corrugated spring steel wire, and cutting elements placed on it, characterized in that, in order to expand technological capabilities by ensuring the replacement of cutting elements, the bearing part is provided with rigidly mounted on it elastic brackets, and the cutting elements are placed in these brackets, which are installed with the possibility of fixing the cutting elements in the axial direction. viewA fig g 6-6 6-6 C) iga fig.Z Editor I. Casard Compiled by T. Petukhova Tehred L.Oleynik Proofreader S.Cherni Order 1853/13 Circulation 716Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4