JPS59224203A - Chip breaker piece - Google Patents

Abstract

PURPOSE:To reduce the number of the titled pieces which should be possessed and reduce their cost by making a configuration in which each corner of a regular polygon is cut off and forming chip breaker walls, whose chip parting functions are mutually different, on each of the notched surfaces respectively. CONSTITUTION:The plan-view configuration of a chip breaker piece 5 is made, e.g., a configuration in which the three corners of a regular triangle are cut off, making each of the notched surfaces chip breaker walls 53a-53c which intersect with both top and bottom faces 51, 52 at right angles respectively. Each of the walls 53a to 53c is paralleled with each of side faces 54a-54c opposite to the corner at which the wall is formed respectively, and each of the distances l1-l3 between each of the walls 53a-53c and each of the side faces 54a-54c is provided in mutually different dimension. Thus, by selectively setting each of the walls 53a-53c faced to a nose part, which is a cutting edge, in accordance with the variation in cutting conditions, the size of the chip parting function of the walls 53a to 53c can be mutually differentiated. Accordingly, it is possible for one piece 5 to cope with three types of cutting conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chip breaker piece that is placed on the rake face of a regular polygonal indexable chip and functions as a chip breaker for the indexable chip.

Conventionally, as this type of chip breaker piece, pieces in the shape of various citrus fruits are known. For example, Figure 1 (G),
The chip breaker piece 1 shown in FIG.
One arbitrary side surface in the field is made into an inclined surface, and one side made into the inclined surface is made into the chip breaker wall 13. When this chip breaker piece 1 is used, for example, in a throw-away type cutting tool, it is placed on the indexable tip T and placed on the tip seat 8 of the cutting tool body V, as shown in FIG. Tightening is done by a bolt B via a clamp piece P'f.Then, the chips generated by the cutting edge C of the indexable chip come into contact with the chip breaker wall 13 and are curled and broken.

In addition, the chip breaker piece 2 shown in Figure 3 (@) is
The chip breaker wall 23 is placed at an angle of
It is designed to have an M intersection. The 1st and 2nd methods are:
The chip breaker piece 3 shown in FIG. The chip breaker wall 33 is inclined with respect to the upper and lower surfaces 31 and 32. As shown in FIG. The indexable tip T is placed on the tip toward the nose N, which is the cutting edge of the T, and in this state, the tip is tightened via the clamp piece P on the tip seat 8 of the tool body V.
It is firmly established by

In addition, chip breaker piece 4 shown in No. 61 (6) J
A chip breaker! 143? It is perpendicular to the upper and lower surfaces 41.degree. 42, and the other configuration and method of use are similar to those shown in FIG. 4.

By the way, chip breaker piece 1.2 like above
, 3.4, the chip breaker wall 13,
23, 33. Only one 43 is formed. Therefore, when changing the cutting conditions such as the cutting speed tK and the material of the workpiece, it is necessary to replace the chip breaker piece with another chip breaker piece that is adapted to the new cutting conditions each time. For this reason,
There is a problem in that a large number of chip breaker pieces must be provided for one indexable chip, which increases the cost.

This invention was made to solve the above problem, and aims to provide a chip breaker piece f that can reduce the number of chip breaker pieces to be held, thereby reducing costs. .

A feature of the present invention is that the shape in plan view is a regular polygon with each corner cut out, and chip breaker walls having different chip breaking effects are formed on each cutout surface.

Below, attached figures 7 to $11- about this invention are shown.
Explain with reference to. In addition, FIG. 7 shows an example of a chip breaker piece according to the present invention, and its top view, (
Hitoshi is its side view.

As shown in FIG. 7, this chip breaker piece 5 has an equilateral triangular shape in plan view with metal cutouts at three corners, and each cutout surface has a top and bottom surface 51. Chip breaker fi53a perpendicular to .52
, 53b, and 53c. Each chip breaker wall 5
3a, 53b, and 53C are side surfaces 54a facing the corners where they are formed.

They are parallel to 54b and 54C, respectively. Moreover,
Distance A between each chip breaker 1li53a, 53b, 53c and each of the four sides 54a, 54b, 54c! t-
1t-Js have different dimensions.

FIGS. 8(G) and CB) show a thread cutting tool using the chip breaker piece 5 described above. In this case, the chip breaker piece 5 is
Nose part N where m is the cutting edge of indexable tip T
Place it on the indexable tip T facing this direction, and in this state tighten the tip seat 8 of the cutting tool body ■ via the clamp piece P with the bolt B. Then, change the cutting conditions. If so, set it toward another chip breaker wall 53b other than the chip breaker wall 538 or the 53ct nozzle N. At this time, each chip breaker wall 53a, 53b, 53C and each 11111 surface 548.5
4b.

54c and (Dtm distance ml* −Jt −
Since Is is different, each chip breaker wall 53a
The distance from t53b, 53c to the nose portion N, which is a cutting knife, is also different, and each chip breaker wall 53a, 53b.

The magnitude of the chip breaking action of 53c is different from each other. Therefore, if this chip breaker piece 5 is used, three types of cutting conditions can be met with one chip breaker piece, thereby reducing the number of chip breaker pieces to be held and reducing the cost. .

In addition, in this chip breaker piece 5, when changing all the cutting conditions, the chip breaker information is exchanged in the same chip breaker piece, so compared to the case of converting to a conventional chip breaker piece, In addition, in the Jokijo example, each chip breaker wall 53
a, 53b, 53c and each side 54a, 54b.

54c, each chip breaker wall 53 a e 53
The size of the chip breaking action of be53C is changed.◎However, there are various methods for changing the size of this chip breaking action. The method will be explained below.

The chip breaker piece 6 shown in FIG.
2 from each intersection or edge to each - surface 64a, 64b.

The distance to 64c is constant. However, each chip breaker ki163a, 63b, 63C has a lower surface 62
The top surface 6 as it goes from i1111 to the top surface 61 side.
Each chip breaker wall 63a is tilted toward the center of the chip breaker wall 63a.

63b and 63c are different. As a result, the chip breaking action of each of the chip breaker walls 63a, 63b, and 63c is made to have a different magnitude.6 Also, the chip breaker piece 7 shown in FIGS. , each chip breaker wall 73a, 73b.

Each chip breaker wall 73a is formed by changing the angle between 73c and each side surface 74a, 74b, 74c.

The magnitude of the chip breaking action of 73b and 73c is made different.

Furthermore, the chip breaker piece 8 shown in FIG.

Each side 84a, 84b from the respective center part of 83c.

By making the distance m to 84C different from each other, not only the magnitude of the chip breaking action of each chip breaker wall 83a, 83b, 83c can be made to be equal to each other, but also
Each chip breaker wall saa, sab.

83c is made into an A1 curved surface whose center part protrudes more than the side parts of the image. In this case, each chip breaker wall 83a
, 83b', and 83c have the same angle, but they may have different chest shapes.

In addition, each of the above 91. In Example I, the shape in plan view is a shape in which each corner of an equilateral triangle is cut out, but the shape is not limited to this, and each corner of other polygons such as a regular quadrilateral can be cut out. It may also have a missing shape.

As explained above, according to the chip breaker piece of the present invention, the shape in plan view is a shape in which each corner of a regular polygon is notched, and each notched metal part has a chip having a different chip breaking action. Since the breaker wall is formed, one chip breaker piece can be used for various cutting conditions, thereby reducing the number of chip breaker pieces to be held and reducing the cost of cutting. In addition, when changing cutting conditions, it is only necessary to change the chip breaker wall in one chip breaker piece, and there is no need to change to another chip breaker piece, which reduces the effort involved in changing cutting conditions. Effects such as being able to do this can be obtained.

[Brief explanation of drawings]

Figures 1, 3, 4, and 6 each show an example of a conventional chip breaker piece, (2) is a plan view, (c) is a side view, and Figure 2 is Figure 1. 5 shows a cutting tool using the chip breaker piece shown in FIG. 4, (6) is a plan view thereof, (b) is a side view thereof, and FIG. shows one embodiment of this invention, 2) is a plan view thereof, and (C) is a plan view thereof.
8 shows a cutting tool using the chip breaker piece shown in FIG. Each shows other embodiments of the present invention (the slope is a plan view thereof, and the figure is a side view thereof. 5.6, 7, 8...Chip breaker piece, 5
3a, 53b, 53c, 63a, 63b, 63c. 73a, 73b, 73c, 83a, 83b, 83cm・
−,−・Chip breaker wall. Applicant Mitsubishi Metals Ltd. Figure 1 (Date C) (A) Figure 3 (B) (A) Figure 4 (Date c) (A) (B
)
(A3 14 Figure 1O

Claims (1)

[Scope of Claims] The whole has a flat plate shape, and the shape in plan view is a regular polygon with each corner cut out. A chip breaker piece characterized in that each chip breaker wall has a different magnitude of chip breaking action.