RU2304490C1 - Cutting tool for working end grooves - Google Patents

Abstract

FIELD: working metals by cutting, rotary cutting tools for high-speed working.

SUBSTANCE: cutting tool includes housing with stem, cutting heads mounted in guiding surfaces of housing, inserts with cutting tips mounted in guiding surfaces of heads and moved by means of adjustment screw. Said guiding surfaces of housing and of heads are formed with possibility of sensing centrifugal efforts occurring at rotation of cutting tool. In order to simplify axial adjustment and to enlarge range of radial regulation of position of cutting tip, guiding surfaces of heads are arranged on housing in parallel to axis of cutting tool and guiding surfaces of inserts are in the form of riffles arranged normally relative to axis of cutting tool. Surface of insert opposite to said riffles is convex one and it is designed for engaging with elastic wall of head at securing insert in head.

EFFECT: simplified axial adjustment of cutting tip, enlarged range of radial regulation of position of cutting tip.

5 dwg

Description

The invention relates to the field of metal cutting, a rotating precast cutting tool for high speed machining.

Known cutting tool for machining end grooves, comprising a housing with a shank, cutting heads mounted on the guide surfaces of the housing, inserts with cutting inserts mounted on the guide surfaces of the heads and movable with an adjusting screw, wherein said guide surfaces of the housing and heads are configured to perception of centrifugal forces arising from the rotation of the cutting tool (see WO 2005/007330, B23B 29/034, 2005).

In the known tool, the axial adjustment of the cutting insert is made before the head is mounted on the cutting tool body and the possibility of moving the head along the corrugations in the transverse direction to them is limited, which reduces the range of radial adjustment of the position of the cutting insert.

The objective of the invention in this way is to simplify axial adjustment and expand the range of radial adjustment of the position of the cutting insert.

The problem is solved in that in a cutting tool for machining face grooves containing a housing with a shank, cutting heads mounted on the guiding surfaces of the housing, inserts with cutting inserts mounted on the guiding surfaces of the heads and moved with an adjusting screw, while the said guiding surfaces the housing and heads are made with the possibility of perceiving centrifugal forces arising from the rotation of the cutting tool, according to the proposed invention the surfaces of the heads are located on the body parallel to the axis of the cutting tool, and the guide surfaces of the inserts are made in the form of corrugations located perpendicular to the axis of the cutting tool, while the surface of the insert, opposite to the corrugations, is convex and designed to interact when fixing the insert on the head with an elastic wall made on head.

The proposed cutting tool is presented in figures 1-5, in which:

figure 1 shows a front view of a cutting tool for machining end grooves;

figure 2 shows a top view of the cutting tool in figure 1, on which for clarity removed one of the heads;

figure 3 shows a view of figure 2;

figure 4 shows a view of B in figure 1;

figure 5 shows a section bb in figure 1.

A rotating cutting tool for machining face grooves comprises a housing 1, cutting heads 2 mounted on guide surfaces of the housing, which are made in the form of dovetail grooves 3 located parallel to the axis of rotation of the cutting tool, and insert 4 with cutting inserts 5. Insert 4 mounted on the guide surfaces of the heads in the form of corrugations 6 located perpendicular to the axis of rotation of the cutting tool, and are moved along them with the adjusting screw 7.

The cutting insert 5, mounted in the socket of the insert 4, is fixed, for example, by means of an elastic wall 8, which is influenced by a fixing screw 9. The surface 10 of the insert, which is opposite to the corrugations 6, is convex and designed to interact when fixing the insert on the head with an elastic wall 11 made on the head 2. To fix the insert on the elastic wall 11 acts fixing screw 12.

Axial adjustment of the position of the cutting insert is carried out together with the head 2 using a wedge 13, moved by a differential screw 14. The head 2 is fixed with fixing screws 15, which press the head against the guide surfaces of the groove 3. To maintain contact of the head with the guide surfaces of the groove 3 during axial adjustment, spring 16 mounted in the housing 1.

When assembling the cutting tool, the head 2 is installed in the groove until it contacts the wedge 13 and is fixed with screws 15. Then, the insert 4 with the cutting plate 5 mounted on it is mounted on the head. The radial position of the cutting plate is roughly adjusted by moving the insert 4 transverse to the corrugations 6. For accurate radial adjustment uses the movement of the insert 4 using the adjusting screw 7. Then the insert is fixed with a fixing screw 12. Axial adjustment of the insert 4 is made by the wedge 13 with the screws 15 loose. ny order of assembly of the cutting tool, and adjusting the position of the cutting insert is exemplary and may vary depending on the specific conditions.

Claims (1)

A cutting tool for machining face grooves, comprising a housing with a shank, cutting heads mounted on the guide surfaces of the housing, inserts with cutting inserts mounted on the guide surfaces of the heads and movable by means of an adjustment screw, wherein said guide surfaces of the housing and heads are made with the possibility of perception centrifugal forces arising from the rotation of the cutting tool, characterized in that the guide surfaces of the heads are located on the parallel body about the axis of cutting tool inserts and the guide surfaces are in the form of corrugations disposed perpendicular to the axis of the cutting tool, wherein the surface of the insert lying opposite corrugations, is convex and is designed to interact with the fixing insert on the head with an elastic wall formed on the head.

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