SU52003A1 - Toolholder for tangential cutter - Google Patents

Description

Known | 1 pliers for tangential incisors, in which the surfaces supporting the incisors are knurled to prevent the incisor from shifting. The present invention perfects these holders in that the knurling is placed on the surface of the holder facing the object being processed. This has the advantage that the cutting force is used to hold the tool in the mandrel.

In FIG. 1 depicts the proposed tool holder for lathes; FIG. 2 and 2 show a holder with incisors for various purposes; FIG. 3 illustrates the strengthening of the tool in the holder with a screw, and FIG. 4-with clamp; FIG. 5 illustrates knurling performance; FIG. 6 shows the use of a non-knurled tool holder in the proposed holder.

The proposed holder for a tangential cutter consists of a tail part a having a head a, the plane of which, facing the workpiece, has a knurling a. A cutter b is attached to the head plane, adjacent

to the head side of which is also provided with a knurled. The cutter b is attached to the head by means of detachable fasteners, such as, for example, a collar b, the tail part of which, having a screw thread, enters the hole in the head yo and is tightened with the help of a nut (Fig. 1 and 4).

The cutter can also be fixed on the head with the help of a screw g, which is included in the elongated slot of the head A (Fig. 3), and this screw enters the hole in the cutter and is equipped with a screw thread. The latter method of fastening is advantageously used for short incisors. As the tool is worn, the latter is moved to the desired height by loosening the clamp or screw. At the same time, the cutter can be moved along the knurling without changing the position of the holder itself in the machine toolholder. The presence of knurling on the tool head and on the tool itself prevents the tool from moving down during operation.

In order to avoid lateral displacement of the cutter, knurling on the head is carried out with a slight inclination with respect to the support plane of the holder.

FIG. 5, angle 11 shows the inclination at which the knurling was carried out.

With the described methods of setting the cutter, the resultant cutting force is directed deep into the knurling, which ensures a strong and reliable fastening of the cutter on the head, and the clamp or screw almost do not carry the load.

The shape of the knurling on the head and the tool can be different, for example, in the form of a straight knurling, mesh, shchevron, wolf tooth, etc.

The cutters used for the holder described can be of various purposes. FIG. 2 shows a holder with a through cutter, and FIG. 2-with a scoring.

Provides for the use of incisor-free incisors. In this case, an intermediate gasket H (Fig. 6) is used. This gasket is equipped with a knurling H and a projection H-, on which the tool is supported.

The gasket with the cutter is fastened to the head of the holder in a manner described above.

The advantages of the proposed holder are as follows:

a) the cutter shape is simplified, which mainly represents a prism, which makes it suitable for mass production, and the cutter does not require reforging until full wear;

b) the same cutter can be used for both turning and planing works;

c) when using such a holder, cutting steel is significantly saved;

d) the sharpening of the cutter is simplified, since the form of the holder provides predetermined rear angles fi and h (Figs. 3, 4 and 5), as a result of which only the front face of the cutter is angled a (Figs. 3 and 4);

e) the holder makes it possible to use all the advantages of tangential incisors (work is quiet, easy cutting, reduction of vibration, cleanliness of processing).

Reduces the time of installation of the cutter in the center of the product and eliminates the need to use pads when installing the cutter;

e) the holder makes it possible to use standard cutters, as a result of which they are easily centralized on conventional grinders without the use of special grinding machines.

Test tool holders in cutting tool lab | Gnatev showed complete reliability of the attachment of the cutter and ease of operation.

The subject matter of the invention.

A holder for a tangential cutter provided with a knurling surface supporting the cutter, wherein the knurling is placed on the surface of the holder facing the object being processed, so that when interacting with the knurling of the cutter, use a cutting force to secure the cutter.

to the author's testimony of S. I. Ponomarev

 52003

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