RU1775235C - Mechanism for drilling through holes in cylindrical parts, mainly in pipes - Google Patents

Abstract

Usage: in mechanical engineering for hole processing. SUMMARY OF THE INVENTION: In the housing 1, a basing element 2 for the outer surface and a basing element 3 for the inner surface of the part 4 are installed. Conductor bushings 5 and 6 are mounted coaxially with each other. An eccentric roller is mounted on the basing element 3 for the inner surface. The conductor * sleeve 6 of the base element 3 is made in the form of a roller 9, on the outer surface of which in the plane of the conductor sleeve 5 a radial groove is made 10. The roller 9 is rotatably mounted on an eccentric roller. The base elements 2 and 3 are interconnected with the possibility of elastic regulation. Part 4 is mounted on the base element 2 end-to-end in the inner base element 3 and pressed with tacks 11 and 12. The drill through the sleeve 5 processes the upper part of part 4, after which it comes into contact with the groove 10 of the roller 9, elastically fixed to the eccentric roller, creating adjustable counteraction to lateral force of cutting. The expansion of part 4 is carried out in the reverse order. 4 ill. (Ls

Description

The invention relates to mechanical engineering, and more particularly, to devices for guiding a cutting tool when machining holes in parts.

The aim of the invention is to improve the accuracy of processing.

Figure 1 shows a device, a section; figure 2 is a cross section aa in figure 1; in Fig. 3 is a section bB in Fig. 2: in Fig. 4 is a view B in Fig. 1.

A device for drilling through holes in cylindrical parts of predominantly pipe type, comprises a housing 1 s

fixed on it with a base element 2 for the outer surface and a base element 3 for the inner surface of the part 4.

In each of the basing elements 2 and 3, conductive bushings 5 and 6 are mounted coaxially to each other.

An eccentric roller 7 is mounted on the base element 3 for the inner surface. The base elements 2 and 3 are interconnected with the possibility of elastic regulation by means of an elastic rod 8. fixed at one end to

excised roller 7, and the other in the base element 3 with the possibility of regulation.

The conductor sleeve 6 of the base element 3 is made in the form of a roller 9, on the outer surface of which in the plane of the conductor sleeve 5 a radial groove 10 is made,

The roller 9 is rotatably mounted on said eccentric roller 7.

Part 4 is pressed by tacks 11 and 12.

The device operates as follows ..

Part 4 is installed with the outer surface on the base element 2 until it stops end-to-end in the internal base element 3 and pressed with tacks 11 and 12,

The tool 13 is brought in and through the conductive sleeve 5, the upper part of the hole in the part 4 is machined.

When the tool 13 enters the inner part 4, it comes into contact with the groove 10 of the roller 9 and as it lowers, the roller 10, rotating from the tool 13, reduces friction forces and creates an adjustable

counteraction to unilateral forces of cutting. After the tool 13 re-enters the sleeve 5, from below.

Claims (1)

After processing the part 4, the tool 13 is retracted, the part is unfastened and removed. SUMMARY OF THE INVENTION A device for drilling through holes in a c., Pindric part, preferably a pipe type, comprising a housing, a base element for the outer surface and a base element for the inner surface, each of which conductive bushings are mounted coaxially with one another, characterized in that: with the aim of increasing the accuracy of processing, the device is equipped with an eccentric distance located on the base element for the inner surface, and the base elements are interconnected with the possibility w elastic adjusting and based of conductor sleeve element to the inner surface is formed as a roller, on the outside, the surface of which in the plane of conductor sleeve is formed radial groove, rotatably mounted on said eccentric roller. . // f (e. i IE.2 5VI 0 V