SU643254A1 - Face-milling cutter - Google Patents

Description

(54) SIZE MILL

I

This invention relates to metal6v

processing and can be used in the design and face (Jpea.

End mills are known that can be mounted on a mandrel with mechanical, clearing of multifaceted non-replaceable plates, the damping of vibrations produced by rubber flj.

However, in such a design of the face milling cutter, it is not possible to regulate the stiffness of the damping assembly in accordance with the machining conditions.

The purpose of the invention is to regulate the stiffness of the damping assembly.

This is achieved by installing an intermediate disk between the end of the mandrel and the cutter body, which is connected to a rigid mandrel, and elastic keys to the body. Moreover, on the surfaces of the intermediate disk and body facing each other (uniformly circumferentially coaxial, stepped holes with hosted

in them adjusting elements in the reed elastic washers, Drains and glasses with balls,

FIG. 1 shows the proposed end face in a diametrical scientific research institute; FIG. 2 -, section AA; FIG. one.

The face milling cutter with its body 1 is installed in the milling mandrel 2, which, in turn, is installed in the spindle 3 of the milling machine. An intermediate disk 4 is installed between the end face of the grain mandrel and the body of the 45th ezeza; the backframe is used to transmit torsional torque with (з zernoy rigid mandrel key 5, and with the phrase — elastic keys 6, On facing shch) angle to the other surfaces of the intermediate disk and body 4 cuts , evenly around the circumference, there are three pairs of coaxial stepped holes, where the washer 7 and the stem 8 are installed at one versts of the intermediate disk, and the glass 9 with the ball 10 in the holes of the K1fusa,

Tortsova mill works as follows.

During rotation 3 and the interaction of the cutting plates 11 with the workpiece, the torque is transmitted from the spindle through a rigid key 5 to the intermediate disk 4 and then through the elastic keys b to the body 1 with the cutting ayemeite. Since the connection between the intermediate disk and the housing is realized by means of elastic keys, the dynamic loads on the cutter drive are transmitted in smaller values. With a relative circumferential displacement of the intermediate disk 4 relative to the body of the 1 eza under the action of the moment and that from the side of the cutting forces, the elastic keys of the base are compressed, and the axial movement of the body (Iranian balls 10, nepeKaTbs moving by a small amount along the flat ends of ro / iosoji rods 8. Since body 3. is limited from its movement by rolling bodies 8 and 10, cncTeKia is highly sensitive to reacting to changes in the moment of resistance that occurs in the cutting zone.

In order to adjust the torsion plane, it is necessary to change the gap between the proximal ends of the intermediate disk 4 and the mill body 1. To do this, remove the spring split washers 7 from 5 days & and install other similar washers with a different thickness. Pressing and moving the keyboard

1 In the axial direction, it is produced by means of an adjusting screw 12, which requires a smaller torque to wrap, which requires a moment, between the proximal ends of the screw head and the body, there are rolling elements 13,

As shown by the results of expert studies, the proposed design of the milling cutter provides high precision machining and damping of shock vibrations.

Claims (1)

1. USSR author's certificate No. 187482, cl. B 23 C 5/06, 1865,