SU1252065A1 - Tool for working deep openings - Google Patents

Description

The invention relates to metalworking and can be used for hole drilling and boring deep holes.

The purpose of the invention is to simplify the manufacturing technology and to improve the quality of the tool by using simple parts in the construction and eliminating technological gaps.

FIG. Figures 1 and 2 show single and double blade tools with internal chip removal and coolant lubricant (SOS) and with an internal arrangement of the guides; in fig. 3 is a view A of FIG. one; in fig. 4 section bb in fig. one; in fig. 5 is a sectional view BB in FIG. one.

The tool for machining deep holes consists of a body 1, cutting inserts 2 and solid carbide guides 3, sectors 4 and fasteners 5. Cutting insert 2 is a sector of a ring with a solid carbide insert 6 Sectors 4 and sectors 2 are obtained from a blank ring section. At the end of the tool body 1, an annular protrusion is made with cylindrical surfaces 5 and & , and on the mating surfaces of sectors 4 and sectors 2 with housing I, an annular groove i is formed, in which the protrusion of housing 1 is placed in a tight fit. The fastening of sector 4 and sectors 2 on the stalk part is essential, e.g. screws 5. To perform a drainage channel on the SOS and chips from the cutting zone of sectors 2, the groove with an inclined surface and smooth corners is made on the inner surface of sector 4.

The tapering part of the channel for draining the SOS at the end of sector 4 adjacent to sector 2 can be made short and polished carefully.

Sectors 2 can be fixed on the end of the stem part 1 by means of locating pins or screws placed transversely to the supporting surface of the p sector 4. 1 right: the right 3 are placed in the longitudinal grooves (t sectors 4. In this case, they are fixed by means of a wedge 7 having a through hole for passage of the screw 8. Between the mating ends and 1 is placed a guide 3 which has the ability to contact the surface J of sector 4 and the inclined surface of the wedge 7, which makes it possible to easily adjust the distance and between the mating faces of the sectors for setting sectors 2.

Before starting the operation, install sector 2 onto the supporting surface e of sector 4, which is pre-fixed to the tool body 1 with screws 5. Then, sector 4 is moved along an annular projection b and I until the technological gaps are completely selected, which can be in sector 2 connections with radial ends of sectors 4 due to the size of sectors 2 with technological tolerances.

This is achieved by turning the screw 8 (clockwise) and accordingly by moving the wedge 7 towards the wall of the longitudinal groove U. Thus, there is a choice of gaps in the connections of sector 2 and sectors 4. Then sector 4 and sector 2 are finally fixed on the tool body 1. Exact positioning of the padded carbide plate on the stem part is provided by an annular groove and a protrusion.

In case of circular drilling with the proposed tool, the SOS is fed into the cutting zone of the plates from the pumping station of the machine through the annular gap formed by the inner surface of the workpiece opening and the outer surface of the body -1 and sectors 4. The forming chips and SOS are removed from the cutting zone j . The design of the tool in the process of hole drilling deep holes provides rigid and reliable fixation of the sector 2 and guides 3 in three directions. The radial force of the cutting force is perceived by the annular protrusion with surfaces 5 and 5, the axial force by the end of the stem part 1 of the tool, and the main cutting force (the tangential component of the cutting force) is transmitted through the fixed sectors 4 to the tool body 1.

7 3

Type A

FIG. 2

5-6

B- B

FIG.

Editor N. Bobkova

Compiled by S. Ber Tehred O. Sopko

Order 567/13

Circulation 1001

VNIIPI State Committee QCCP

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. H

Proofreader M. Pojo

Subscription

Claims (1)

TOOL FOR PROCESSING DEEP HOLES, comprising a housing with guides and fixed to its end using cutting screws Fig. 1 insert, characterized in that, in order to simplify the manufacturing technology and improve the quality of the tool, the cutting insert is made in the form of mating sectors of the ring, and on the surfaces of the sectors and the housing facing each other are made designed to interact with each other respectively annular a groove and an annular protrusion, and a guide is placed between the ends of one of the pairs of mating sectors and is mounted with the ability to move under the action of a wedge and a tension screw inserted into the tool. SU_ 1252065