SU1289620A1 - Adjustable face milling cutter - Google Patents

Abstract

The invention relates to the design of metal cutting tools. The purpose of the invention is to increase the processing performance by increasing the possible number of cutting inserts by reducing the size of their attachment and adjustment mechanisms. The milling cutter consists of a body 1, cutting inserts 3 and adjusting-clamping mechanisms containing fastening screws 6, set screws 7 and threaded bushings 8. Adjusting the position by stripping the edges 4 of the cutting insert is done by rotating the insert around its axis. To do this, turn the threaded bushing at a certain angle and screw in the set screw, which, pressing on the insert face 5, rotates it to the desired angle. Finally, the insert is fixed by the fixing screw. To protect the inserts from axial displacements, the flats may be formed with broken lines with a slope angle to the insert axis smaller than the friction angle. 1 h. the item of f-ly, 4 ill. (L to 00 Od 1C figure 1

Description

The invention relates to the design of metal cutting tools.

The purpose of the invention is to increase the processing performance by increasing the possible number of cutting inserts by reducing the dimensions of their mounting and adjusting mechanisms, as well as improving the reliability of fixing the cutting inserts in the cutter body.

FIG. 1 shows the incisor cutter assembly; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows an embodiment of a cutting node with a broken flat on the cutting insert.

The milling cutter consists of a body 1, in the holes x 2 of which cutting inserts 3 with stripping edges 4 are installed.

The inserts are flat flats 5, interacting with the fastening screw 6 and the set screw 7. The installation screw is located in the hole of the threaded sleeve 8. The axes of the housing holes for the mounting screw and threaded sleeve are located in the plane of the axis of the hole for the cutting insert and perpendicular to it, and the axis the bore holes in which the set screw is placed are inclined to the axis of the sleeve itself at an angle a.

To protect the inserts from axial movements, flat faces may be made by broken lines consisting of two sections, one of which is parallel to the axis of the insert, and the other is inclined to it at an angle p less than the angle of friction.

Adjusting the position of the sweep edge is done by turning the cutting

inserts around its axis. For this, the threaded bushing is turned at a certain angle and the set screw is screwed in, which, by pressing on the blade, turns the cutting insert to the desired angle. Finally, the insert is fixed by the fixing screw.

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Claims (2)

1. A face cutter is adjustable, comprising a housing, in the openings of which cylindrical cutting inserts with wiper edges are installed with the possibility of rotation around its axis, which have flat flats for interacting with adjusting and clamping mechanisms, characterized in an increase in the possible number of cutting inserts, each adjusting-clamping mechanism is made in the form of a fixing screw and a threaded bushing with a set screw placed in the threaded holes, ying in the housing, the axes of which are located in the plane of the axis holes for the cutting insert and perpendicular to it, and set screw placed in the bore of the sleeve at an angle to its axis. 2. A milling cutter according to claim 1, characterized in that, in order to increase the reliability of fixation of the cutting inserts, their flat flats are made with broken lines consisting of two sections, one of which is parallel to the axis of the insert, and the other is inclined to it at an angle smaller friction angle. five 0 fptjs2 7 .