SU979043A1 - Adjustable reamer - Google Patents

Description

(50 ADJUSTABLE SCAN

one ...

The invention relates to the field of metal cutting, in particular, to cutting tools, and can be used in the processing of blind stepped holes.

Known adjustable sweep, containing a hollow body with cutting elements, between which are made through the longitudinal slots, and a conical mandrel mounted in the conical hole of the housing 1.

However, such a scan cannot be used when machining blind, stepped holes, whose diameter exceeds the diameter of the inlet part of the hole, since the tool can be adjusted in diameter only outside the workpiece before entering the hole.

The aim of the invention is the expansion of technological capabilities by ensuring the processing of blind stepped holes.

The goal is achieved by the fact that the offered adjustable sweep is equipped with a replaceable adjusting ring mounted in an annular groove made on the outer surface of the cutting elements.

FIG. 1 shows the proposed scan; in fig. 2 is a section A-A in FIG. one.

The cutter consists of a body 1, a tubular adapter 2, interconnected by means of a thread, and a 1-square shank 3 attached to the adapter by means of a 5th weld.

On the housing 1 there are cutting teeth k and longitudinal through slots 5 whose length exceeds the length of the teeth.

In the conical opening of the housing there is a conical mandrel 6, on the shank of which a thread 7 is cut interacting with the similar thread 39790i 34

a battle performed on the inside of the tailstock side, the end surface of the shank 3 sweep. For your advance opening. By moving the mandrel 6 to the end of processing, the nuts 8. 8. on the mandrel are unscrewed, while cutting

To supply the lubricant-coolant, a part assumes its former size,

fluid serves as a choke 9, installed — which allows the sweep to be withdrawn through

; ny on the adapter 2. the input part of the stepped hole

On the outer surface of the cutting parts.

teeth made an annular groove, Thus, the proposed opening of which is installed interchangeable regulation, provides the possibility of the processing ring 10, which serves to limit the blind stepped holes, which

no unlocking and sweep installation expands technological capabilities

at a certain size. The number of tools, rings is determined by the number of sweep passes during processing.

Claims (1)

The sweep works as follows. .razom. The sweep is secured using an adjustable sweep containing the shank 3 in the tool holder tokar-hollow body with cutting elements, machine tool, and the workpiece, W, which are made through in the chuck of the machine, before unclamping the working longitudinal slits, and conical the sweep portion has a dia mandrel size that is set to a conical The meter is smaller than the diameter of the entrance opening of the housing, which is a stepped blind hole, not so that, in order to expand to be processed. Thanks to this 5 technology capabilities, by the sweep is seamlessly introduced to allow the depth of the hole end to be processed. step holes, reamer With the start of rotation of the machined supply: the replaceable adjusting joint is tightened when the nut is tightened with 8 screws, set in the cone mandrel 6, and the surface of the cutting element expands and expands the sweep of the rotary ring. With this, the tooth sweeps gradually. cut into the surface of the machined- Information sources, the hole of the part to the diameter, taken into account in the examination of the defined restrictive ring 35 V. Shatin. and other. Reference end of the 10. toolmaker. M., Maza, then scan with the help of a support tire, 1975, p. 188, fig. 7 the machine communicates a longitudinal displacement - (prototype). one/ /  11 ,,, y,., // 7 - AND 5 A / U / U / U / A 7 in 1 BA. Phage.2