JPH06182604A - Vertical throw-away tip for copying tool - Google Patents

Abstract

PURPOSE:To provide a throw-away tip for copy working, which, has high knife edge strength, a large number of cutting edges used, excellent in economical efficiency and can set the vertical rake angle to be suitable for working material hard to be cut. CONSTITUTION:A throw-away tip is square in the basic form, vertically used, and so constructed that main cutting edged 3 one fourth to three fourth as long as the side are provided on the ridge lines of four sides, a triangular prism- like projection is provided on the other parts outside the main cutting edges, the other parts are cut to be triangular prism-like or rounding or chamfering is performed for the parts. Or the basic form of the tip is rectangular or square, and used vertically, the confronting outer peripheral surfaces are taken as cutting faces 2, the outer peripheral surfaces of the other two sides are inclined at the same angle in such a manner that they intersect each other at the parts half as long as the side or formed by two faces inclined in such a manner that the diagonal line is taken as a ridge line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throw-away tip and a throw-away type tool used as a cutting tool.

[0002]

2. Description of the Related Art Since a vertical throw-away tip has a rake face on the outer peripheral surface, since the cutting force is received by the thick surface of the throw-away tip, the cutting edge strength is high and it is suitable for heavy-duty heavy cutting. Further, by providing a V-shaped or arcuate groove on the outer peripheral surface, there is a feature that a positive rake cutting tool with a small cutting resistance can be constructed. However, the conventional vertical throw-away tip is the one shown in FIGS. 3 to 4 of Japanese Utility Model Application No. 59-54287, and FIGS.
The one shown in the figure and the one shown in Fig. 1 of Japanese Utility Model Application Laid-Open No. 50-5982 have a cutting edge angle of about 9
Since it is 0 °, it is mainly used for single-edged cutting tools and oblique cutting tools, and is applicable to the throwaway tool for outer diameter end face sharing and copying that has a cutting angle of more than 90 ° and a positive front cutting edge angle. There was a drawback that I could not.

For this reason, as for the throw-away tip used in the conventional throw-away tool for outer diameter end face sharing and copying, the shape of a square prism having a regular triangular prism or a rhombus as the bottom is often used. However, in all of these, since the shape of the throw-away tip is a prismatic shape, the vertical blade angle is 90 °, and the vertical rake angle must be negative by the same angle as the main clearance angle, so the cutting resistance is It has a drawback that it is large and not suitable for processing sticky materials such as steel and stainless steel.

In addition, in order to make the vertical rake angle positive, there are the shape of the throw-away tip which is a regular triangular truncated pyramid and the shape of a quadrangular truncated pyramid with a rhombus at the bottom. These are used in the regular triangular truncated cone. The number of cutting edges is 3 and the shape of a truncated pyramid with a rhombus as the bottom has only 2 cutting edges, which is not economical and the cutting force is applied in the thickness direction of the throw-away tip. There was a defect that the strength of the throw-away tip was low and it was not suitable for strong heavy cutting.

There is also a vertical type with a special shape as shown in FIG. 23, which has a positive vertical rake angle,
Moreover, it is a structure that receives a cutting force on a thick surface and is suitable for strong heavy cutting of sticky materials such as steel and stainless steel, but the number of cutting edges used is 2 and the economy is poor. There was a flaw.

[0006]

SUMMARY OF THE INVENTION In the conventional profile-applying slow-away tool for outer diameter end face sharing, the vertical rake angle is positive so that the cutting resistance is small and it is suitable for cutting sticky materials such as steel and stainless steel. In addition, a vertical type that is suitable for heavy-duty heavy-duty cutting has the disadvantage that the number of cutting edges used is low and the economy is poor. Is negative, the cutting resistance is large, and since the cutting force is applied in the thickness direction of the throw-away tip, the throw-away tip has low strength and is not suitable for heavy-duty heavy cutting.

The object of the present invention is to enable strong heavy cutting of sticky materials such as steel and stainless steel, and to have a high vertical rake angle so as to be economically advantageous, and in vertical use, and An object is to provide an outer diameter end face shared copying machining away-away tip that uses a large number of cutting edges and a throw-away bite that is used by mounting the same.

[0008]

The object of the present invention is to make the throw-away tip a vertical type having a square basic shape, and to provide a main cutting edge on the ridgelines of its four sides, and to make the length of the main cutting edge a square shape. One-fourth to three-quarters of the length of one side, and provide triangular prism-shaped projections including the ridge line extending from the main cutting edge of the other side on the portion other than the main cutting edge of the ridge line of the four sides, or This can be achieved by cutting a portion other than the main cutting edge into a triangular prism shape, or by providing a roundness or a chamfer on the ridgeline of the portion other than the main cutting edge of the ridgelines of the four sides.

Further, the throw-away tip is a vertical type having a rectangular or square basic shape, and the opposing outer peripheral surfaces are the rake faces, and the outer peripheral surfaces of the other two sides are matched with each other at a half of the length of the side. It can also be achieved by inclining them at the same angle so as to intersect with each other, or by constructing two surfaces inclined so that the diagonal line becomes a ridge line.

[0010]

The action of the throw-away tip having such a shape has a strength equivalent to that of the throw-away tip having a large thickness because the cutting force is applied in the length direction of the side from the position of the main cutting edge and the auxiliary cutting edge. The resulting vertical type is used by being attached to a throw-away bite, and since the vertical blade angle can be made smaller than 90 °, the vertical rake angle can be made positive and the cutting resistance becomes small, Enables heavy and heavy cutting of sticky materials such as steel and stainless steel. Furthermore, the number of used cutting edges can be set to 4, and the economical efficiency can be improved.

[0011]

The present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a vertical type throw-away tip for copying according to the present invention. 2 to 4 show a situation in which the throw-away tip is attached to the throw-away bit and configured as a copying bit with a cutting angle larger than 90 °, and FIG. 2 is a front view thereof and FIG. Is its A-A arrow view, and FIG. 4 is its B-B sectional view. As shown in FIG. 1, the vertical type throw-away tip for copying according to the present embodiment is configured such that a square has a basic shape and the outer peripheral surfaces of the four sides thereof are the rake face 2, and the ridge lines of the four sides are the main cuts. The blade 3 is provided, the length of the main cutting edge is set to 1/4 to 3/4 of the length of one side of the square, and the main cutting edge of the other side is extended to the part other than the main cutting edge of the ridgeline of the four sides. Triangular prism-shaped projections including ridges are provided. In the copying processing throw-away bite of this embodiment, the copying processing vertical type throw-away tip 1a shown in FIG. 1 is attached to a slot-away bite 4 with screws 5. In this throw-away bite, the cutting angle 6 is larger than 90 ° as shown in FIG. 2, the front cutting edge angle 7 is positive, the vertical rake angle 8 is positive, and the vertical cutting edge angle 9 is shown in FIG. Is less than 90 °, and the cutting edge inclination angle 10 is made positive as shown in FIG.

The configuration as in this embodiment has an effect that the vertical rake angle, the cutting angle, and the front cutting edge angle can be determined independently of the angles of other blade portions.

FIG. 5 shows another embodiment of the vertical throw-away tip for copying according to the present invention. FIGS. 6 to 8 show a situation in which the throw-away tip is attached to the throw-away bit and configured as a copying bit with a cutting angle of more than 90 °, and FIG. 6 is a front view thereof, and FIG. Is a C-C arrow view, and FIG. 8 is a DD cross-sectional view thereof. As shown in FIG. 5, the vertical throw-away tip of the present embodiment is configured such that the outer peripheral surface becomes the rake face 2, the basic shape is square, and the main cutting edges 3 are provided on the ridgelines of the four sides, The length of the cutting edge is 1 / the length of one side of the square
It is set to 4 to 3/4, and the shape other than the main cutting edge of the ridgeline of the four sides is cut into a triangular prism shape. In the copying processing throw-away tool of this embodiment, the copying processing vertical type throw-away tip 1b shown in FIG. 5 is attached to the slot-away tool 4 with screws 5, and is shown in FIGS. Similar to the embodiment, the cutting angle 6 is 90 as shown in FIG.
Besides, the front cutting edge angle 7 is positive, the vertical rake angle 8 is positive as shown in FIG. 7, the vertical blade angle 9 is smaller than 90 °, and the cutting edge inclination angle 10 is shown in FIG. It is configured to be positive. In the case of the present embodiment, the rake face of the other cutting edge needs to be set back from the front cutting edge, and therefore the cutting edge inclination angle 10 must be determined so as to satisfy the following equation.

[0015]

[Equation 1]

The structure configured as in this embodiment has an effect that the throw-away chip can be downsized and can be manufactured at low cost.

FIG. 9 shows still another embodiment of the vertical type throw-away tip for copying according to the present invention.
FIGS. 10 to 12 show a situation in which the throw-away tip is attached to the throw-away bit and configured as a copying bit with a cutting angle larger than 90 °.
10 is its front view, FIG. 11 is its EE arrow view, and FIG.
2 is the FF sectional view. As shown in FIG. 9, the vertical type throw-away tip for copying according to the present embodiment is configured such that the outer peripheral surface becomes the rake face 2, the basic shape is a square, and the main cutting edges 3 are formed on the ridgelines of the four sides. The length of the main cutting edge is set to 1/4 to 3/4 of the length of one side of the square, and the ridge lines of the portions other than the main cutting edge of the ridge lines of the four sides are rounded.
This roundness may be chamfered. The copying processing throw-away tool of this embodiment is obtained by attaching the copying processing vertical type throw-away tip 1c shown in FIG. 9 to a slot-away tool 4 with screws 5, and is shown in FIGS. Similar to the embodiment and the embodiment shown in FIGS. 5 to 8, the cutting angle 6 is larger than 90 ° as shown in FIG. 10, the front cutting edge angle 7 is positive, and the vertical rake is shown as shown in FIG. The angle 8 is positive and the vertical blade angle 9 is smaller than 90 °, and the cutting edge inclination angle 10 is configured to be positive as shown in FIG. 12, but the vertical blade angle 9 and the cutting edge angle 11 are the same angle. There is.

Therefore, in the case of the construction as in this embodiment, the cutting edge angle 11 cannot be independently determined, but the shape of the throw-away tip is simple, and there is an effect that it can be manufactured at low cost. FIG. 13 shows still another embodiment of the vertical throw-away chip of the present invention. Also, FIG.
FIG. 6 is a cross-sectional view showing a mounting state of the throw-away tip to the throw-away bite. As shown in FIG. 13, the vertical type throw-away tip 1d of the present embodiment has a square shape on the surface on the side not provided with the main cutting edge of the vertical throw-away tip of the example of the present invention shown in FIG. The projection 12 is provided, and other shapes are the same as those in FIG. When there is no square-shaped protrusion, the cutting main component force 14 is received by the front flanks 13 of the other cutting edges shown in FIG. 14, so that the positioning accuracy is deteriorated due to the gradient, but as in this embodiment. The one provided with the square-shaped protrusion 12 has an outer peripheral surface 15 of the protrusion.
Since the main component force of cutting is received, there is an effect that there is no gradient and accurate positioning can be performed.

FIG. 15 is a vertical slot for copying according to the present invention.
7 shows another embodiment of the away chip. 16 to 18 show a situation in which the throw-away tip is attached to the throw-away bite and configured as a copying bite having a cutting angle larger than 90 °, and FIG. 16 is a front view thereof and FIG. Is the GG arrow view,
FIG. 18 is a sectional view taken along line HH. As shown in FIG. 15, the vertical type throw-away tip for copying according to the present embodiment has a rectangular basic shape, and has a half of the side length so that the outer peripheral surface of the short side becomes the rake face. The parts are tilted at the same angle so that they intersect each other.
It is configured by inclining at the same angle so as to intersect with each other at / 2. In the copying processing throw-away tool of this embodiment, the copying processing vertical type throw-away tip 1e shown in FIG. 15 is attached to the slot-away tool 4 by means of screws 5, and similar to the above-described embodiments. As shown in FIG. 16, the cutting angle 6 is larger than 90 °, the front cutting edge angle 7 is positive, the vertical rake angle 8 is positive, and the vertical blade angle 9 is smaller than 90 °, as shown in FIG. As shown in FIG. 18, the cutting edge inclination angle 10 is configured to be positive. In the case of the present embodiment, the rake face of the other cutting edge needs to be set back from the front cutting edge, and therefore the cutting edge inclination angle 10 must be determined so as to satisfy the following equation.

[0020]

[Equation 2]

Although the cutting edge inclination angle 10 cannot be freely set in the structure constructed as in this embodiment, as shown in FIG. 17, the cutting main component force is received on the inclined surface and the effect of being capable of being strongly clamped by the wedge effect is obtained. is there.

FIG. 19 is a vertical slot for copying according to the present invention.
7 shows another embodiment of the away chip. 20 to 22 show a situation in which the throw-away tip is attached to the throw-away bit and configured as a copying bit with a cutting angle larger than 90 °, and FIG. 20 is a front view thereof, and FIG. Is its I-I arrow view,
FIG. 22 is a sectional view taken along the line JJ. As shown in FIG. 19, the vertical type throw-away tip for copying according to the present embodiment has a rectangular basic shape, and has a half of the side length so that the outer peripheral surface of the short side becomes the rake surface. The parts are inclined at the same angle so as to intersect each other, and the outer peripheral surface of the long side is composed of two surfaces inclined so that the diagonal line of the outer peripheral surface is the ridge. The copying machining throw-away tool of this embodiment is obtained by attaching the copying machining vertical type throw-away tip 1f shown in FIG. 19 to the throw-away tool 4 with screws 5, and is similar to the above-described embodiments. As shown in FIG. 16, the cutting angle 6 is larger than 90 °, the front cutting edge angle 7 is positive, the vertical rake angle 8 is positive, and the vertical blade angle 9 is smaller than 90 °, as shown in FIG. As shown in FIG. 18, the cutting edge inclination angle 10 is configured to be positive. In the case of the present embodiment, the rake face of the other cutting edge needs to be set back from the front cutting edge, and therefore the cutting edge inclination angle 10 must be determined so as to satisfy the following equation.

[0023]

[Equation 3]

In the structure constructed as in this embodiment, the cutting edge inclination angle 10 cannot be freely set, but as shown in FIG. 17, the cutting main component force is received on the inclined surface, and the effect of being able to strongly clamp by the wedge effect is obtained. is there.

[0025]

EFFECTS OF THE INVENTION According to the present invention, in the copying-away throw-away tool and the throw-away tip attached thereto, the vertical rake angle is positive and suitable for processing sticky materials such as steel and stainless steel, and the vertical type There is an effect that powerful heavy cutting is possible by using, and the number of cutting edges used is large and the economy is high.

[Brief description of drawings]

FIG. 1 is a perspective view of a vertical type throw-away tip for copying according to an embodiment of the present invention.

FIG. 2 is a front view in which the tip of FIG. 1 is mounted on a throw-away bite.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a view taken along the line BB of FIG.

FIG. 5 is a perspective view of a vertical type throw-away tip for copying according to another embodiment of the present invention.

FIG. 6 is a front view in which the tip of FIG. 6 is mounted on a throw-away bite.

FIG. 7 is a sectional view taken along line CC of FIG.

FIG. 8 is a view taken along the line DD of FIG.

FIG. 9 is a perspective view of a vertical type throw-away tip for copying according to another embodiment of the present invention.

10 is a front view of the tip of FIG. 9 mounted on a throw-away bite.

11 is a sectional view taken along line EE of FIG.

FIG. 12 is a view on arrow FF in FIG. 9.

FIG. 13 is a vertical slot for copying according to another embodiment of the present invention.
It is a perspective view of an away tip.

FIG. 14 is a cross-sectional view showing a mounting state of the tip of FIG. 13 to a throw-away bite.

FIG. 15 is a vertical slot for copying according to another embodiment of the present invention.
It is a perspective view of an away tip.

16 is a front view in which the tip of FIG. 15 is mounted on a throw-away bite.

FIG. 17 is a sectional view taken along line GG in FIG.

FIG. 18 is a view as seen from an arrow HH of FIG.

FIG. 19 is a vertical slot for copying according to another embodiment of the present invention.
It is a perspective view of an away tip.

FIG. 20 is a front view in which the tip of FIG. 19 is mounted on a throw-away bite.

21 is a cross-sectional view taken along the line II of FIG.

FIG. 22 is a view taken along the arrow JJ of FIG.

FIG. 23 is a perspective view of a conventional vertical throw-away tip for copying.

[Explanation of symbols]

1a to 1f ... Vertical slot-away tip for copying
2 ... Rake surface 3 ... Main cutting edge 4 ... Slow away tool 5 ... Screw 6 ... Cutting angle 7 ... Front cutting edge angle 8 ... Vertical rake angle 9 ... Vertical blade angle 10 ... Cutting edge inclination angle 11 ... Cutting edge angle 12 ... Square protrusion 13 ... Front clearance angle 14 ... Cutting main component force 15 ... Square protrusion outer peripheral surface

Claims (9)

[Claims] 1. A vertical type throw-away tip configured such that the outer peripheral surface is a rake surface, the basic shape is square, and the main cutting edges are provided on the ridgelines of the four sides, and the length of the main cutting edge is The length of one side of the square is set to 1/4 to 3/4, and the triangular columnar protrusions including the ridge line extending from the main cutting edge of the other side are provided in the portion other than the main cutting edge of the ridge line of the four sides. A vertical type throw-away tip for a copying tool. 2. A vertical type throw-away tip configured such that the outer peripheral surface is a rake surface, the basic shape is square, and the main cutting edges are provided on the ridgelines of the four sides, and the length of the main cutting edge is A vertical throw-away tip for a copying tool, characterized in that the length of one side of a square is 1/4 to 3/4, and the portions other than the main cutting edge of the ridgeline of the four sides are deleted in a triangular prism shape. 3. A vertical type throw-away tip configured such that the outer peripheral surface is a rake surface, the basic shape is square, and the main cutting edges are provided on the ridgelines of the four sides, and the length of the main cutting edge is A vertical throw-away tip for a copying tool, characterized in that the length of one side of a square is 1/4 to 3/4 and the ridges of the ridges of the four sides other than the main cutting edge are rounded. 4. A vertical type throw-away tip configured such that the outer peripheral surface is a rake surface, the basic shape is square, and main cutting edges are provided on the ridgelines of the four sides, and the length of the main cutting edge is A vertical throw-away tip for a copying tool, which is 1/4 to 3/4 of the length of one side of a square, and is provided with chamfers on the ridges of the four side edges other than the main cutting edge. 5. The vertical throw-away tip for a copying bit according to any one of claims 1 to 4, characterized in that a square-shaped protrusion is provided on the surface on which the main cutting edge is not provided. 6. A vertical type throw-away chip having a basic shape of a rectangular shape, the outer peripheral surface of the short side of which is a rake surface. 1 /
A vertical throw-away tip for a copying tool, which is inclined at the same angle so that the two parts intersect each other. 7. A vertical type throw-away chip having a basic shape of a rectangular shape and a short side outer peripheral surface of which is a rake surface, wherein the long side outer peripheral surface is a diagonal line of the outer peripheral surface. A vertical throw-away tip for a copying bite, which is composed of two surfaces that are inclined so as to form a ridge. 8. The vertical throw-away tip for a copying tool according to claim 6, wherein the basic shape is a square. 9. The vertical throw-away tip for a copying bite according to claim 1, wherein the shape is different.