DE1552334A1 - Indexable inserts in a tangential cutting arrangement with detent locking - Google Patents

Description

Vlende cutting inserts in tangential cutting arrangement with key lock "The invention relates to indexable cutting inserts that are tangentially arranged in the tool carrier ! and the main; - ünd, Ne'henachne.ide16zx den = circumferential sides: the reversible cutting plate are incorporated. The cutting pressures that occur are "n._durdh" snap locks, those in the contact surfaces; the reversible cutting plates and in the contact surface ". of the V-tool carrier are attached, intercepted. The indexable insert itself is made by a> the cutting body penetrating a screw with a fastener guide pressed to rest the tool carrier, with the balancer also having a Absorbs part of the cutting pressure forces. "It is known that indexable inserts in tool carriers tangential "are used> with those arranged on the circumference Main and secondary cutting edges rest or rest on the support and contact surfaces> the Take over cutting pressures and secure the indexable inserts against twisting. These reversible cutting inserts are all held with screws that the reversible cutting inserts penetrate. A disturbing effect with these tools is that all the pressures in the area the edition designed as the main cutting edge and the sons themselves tend to crumble or break away. In addition there is> that, for example triangular indexable inserts when loaded like a wedge into the pointed recess of the contacting contact surfaces and the contact surfaces at their weakest: Blast places. Therefore, such tools can only be used to a limited extent brought_be> because the reject and wear rates are medium and stronger The machining load as well as the economic costs would be too high.

The invention now also makes this type of reversible cutting inserts possible to a larger area of application. The tangential arrangement of the indexable inserts in a holder available for this> does not decrease the cutting pressure forces : hehr by rests on the circumferential surfaces of the indexable inserts on g but by means of one or more pin closures arranged in the contact surfaces. This The grid system should be as close as possible to the area of the main cutting pressure, so that the indexable insert is secured against twisting under heavy loads. .The, -Fixing screw, -that the reversible cutting insert body with a cylindrical trained shaft penetrates and additionally in the holder. intervenes, takes in addition. part of the cutting pressures, so that the indexable insert is not only adequately secured against twisting, but also against shearing.

This arrangement mainly helps to ensure that cutting tools: fier: _ opipr-: filming and especially those with a narrow head and sehkenapitz.en.unter - 60c, which earlier could only be made in a soldered version, using insert tools substitute. At..

tool positioning of rectangular half can of indexable cutting edges are utilized, respectively. With obtuse angles, ;;. on the other hand, all available cutting edges of the cutting insert, ie 6 cutting edges for triangular reversible cutting inserts and $ cutting edges for square reversible cutting inserts.

For example, you can see in Fig. '! a reversible cutting tip ( 1) in a triangular shape with recesses or interchangeable elevations (22a) arranged in the systems.

Fig. 2 shows the side view of Fig. 1 in section.

In Fig. 3 you can see a square indexable insert (3) with a notch system (4) in groove form.

Fig. ¢ shows the side view of Fig. 3 in section.

Fig. 5 shows a triangular indexable cutting tip, received in a holder. - 'In-Fig. 6 shows the side view in section with the reversible cutting plate (1), 9 snap lock (2), fastening screw (6) and holder (5) from FIG .

Fig. 7 shows the top view of Fig. 5, with an obtuse angle of attack and the pressed-on indexable cutting insert with the system (1a) on the system of the bracket (5a).

In Fig. 8 the top view of Fig. 5 is shown with a right-angled angle of attack .

Fig. 9 shows the top view of Fig. 5 with an acute angle of attack and a narrow head piece.

Fig. 10 shows the side view of a holder with a screwed-on square indexable insert .

Fig. 11 shows the side view and the section from Fig. 10, with reversible cutting plate (3), snap lock (4), fastening screw (8) and holder (7).

Fig. 12 illustrates the plan view of Fig. 10 with the installation of the turning-Bahneidplatte (3a), pressed to the system (7a) of the holder (7) is.. - The reversible cutting insert (1l3) is pressed with the contact surface (1a / 3a) on a contact surface (5a / 7a) of the holder (5/7) by means of a fastening hood (6/0) and secured by the locking device (2 / 2a / 4) secured against rotation and the cutting pressure forces are absorbed by the catch lock (2% 2% 4) in cooperating with the bolts (6% 8).

Claims (1)

Claim arranged hole for receiving -the fastening element, characterized in that the reversible cutting plate (1/3) with the system (1a / 3a) by a fastening element (6/8) @ to the systems (50a) of the brackets (5% 7) is pressed. ' is equipped with a safety catch and the cutting pressure forces are absorbed in cooperation with the box securing device (22a / '4). safety locks the fastening elements are on = ecrdret.