JPH0825110A - Turning tool - Google Patents

Abstract

PURPOSE:To provide a turning tool in which excellent feeding effect for coolant liquid is provided and a passage for the coolant liquid is perforated. CONSTITUTION:Projecting parts 9, 10 are individually arranged on the side flak side and the front flank side in a tool main body 2 so as to be matched with a projecting part, 12 arranged on a cutting face 11 side, and from three parts, openings for a coolant liquid passage 13 are opened. The coolant liquid jetted from the side is fed over the overall length of the side flank and the front flank of a cutting edge tip 3, and in addition, jetting effect is not changed because of the two jetting ports even when the cutting direction is changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning tool provided with a coolant liquid injection hole, and more particularly, to a coolant liquid supply effect which is further enhanced.

[0002]

2. Description of the Related Art Coolant is supplied to a cutting edge of a cutting tool for the purpose of suppressing thermal damage to the cutting edge, cooling a work piece or a machine tool, improving chip control, etc. It is supplied from the outside of the cutting tool from the oil supply nozzle provided in the machine.

However, the supply effect is higher when the supply is performed near the cutting point. Therefore, a technique has been developed in which a flow path is provided in the tool main body and the coolant is jetted and supplied by opening the flow path near the cutting point. Typical ones are those which are supplied to the rake face of the cutting edge chip from above the tool body (see, for example, Japanese Utility Model Publication No. 55-66701), and those which are supplied to the flank face of the cutting edge chip from below the tool body. ,
And a combination of the former two (for example, Japanese Patent Laid-Open No. 6-3
1502)).

[0004]

Among the above, the method of jetting and supplying to the rake face of the cutting edge tip is to jet the coolant liquid to the contact surface between the cutting edge tip and the chip during cutting. Is. However, since the contact surface is relatively wide and the chips are ejected generally in the direction of the injection hole, the coolant liquid does not easily reach the inside of the contact surface. On the other hand, since the injection supply from the flank side can be directly supplied to the scraping point of the flank of the cutting edge tip, even in the practical test of the present inventor, flank wear is particularly suppressed, and the tool life is extended. I know that.

By the way, in the prior art described in the preceding paragraph,
The supply direction on the flank side is toward the corner of the cutting edge tip from below the tip surface of the tool body. However, in the turning tool, depending on the cutting direction, the horizontal cutting edge of the cutting edge tip may be the main cutting edge and the front cutting edge may be the main cutting edge. In this way, when the main cutting edge differs depending on the usage situation, it is said that the coolant is supplied over the entire flank of the main cutting edge by the injection supply only from below toward the corner of the cutting edge tip. Is hard to say.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in a turning tool having a built-in flow passage for supplying a coolant liquid, a side flank side and a front flank side of a tool body are provided. Providing a protrusion on each of the
The flow path through which the coolant is jetted and supplied is opened toward the lateral flank and the front flank of the cutting edge tip.

Further, a projecting portion is also provided on the rake face side of the tool body, and a flow path through which the coolant is jetted and supplied is opened from this projecting portion toward the rake face of the cutting edge tip. is there.

[0008]

The present invention is based on the result of research on how to effectively and effectively supply the coolant to the cutting point. It has been confirmed that the supply effect can be enhanced not only by supplying the coolant liquid from the rake face side of the cutting edge tip, but also by supplying the coolant liquid from the flank face side. However, as in the present invention, the coolant liquid can be supplied over the entire length of the cutting depth from the tip of the cutting edge only by jetting and supplying from the side to the flank. Moreover, according to the present invention, the injection destination is toward the corner of the cutting edge tip, and when high-pressure injection is performed, the action of the coolant liquid trying to reach the corner is increased.

Further, since it is jetted toward the corner from two places in different directions with respect to the flank, it is effective for the arcuate cutting edge of the corner, and is mainly used depending on the usage such that the cutting direction is changed. Even if the cutting edge is different,
The coolant injection effect does not decrease at all.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 3, a tip seat is provided at the tip of a tool main body 2 of a turning tool 1 and a cutting edge tip 3 is mounted. The present invention can be applied regardless of how the cutting edge tip 3 is attached, and may be fixed by brazing or screwed, for example. This embodiment uses a lever pin which is one of the most practical mounting methods. That is, the cutting edge tip 3 that is a diamond-shaped throwaway tip is placed on the tip seat together with the deposit 4, and one end is inserted into the hole of the cutting edge tip 3 and the other end engages with the tightening screw 5. By the action of 6, it is pulled into the tip seat and fixed.

The turning tool having the blade shape as shown in the present embodiment is not limited to transverse feed (feed orthogonal to the long axis of the tool body 2 in FIG. 2) and forward feed (long axis direction of the tool body 2 in FIG. 2). It is also used for feeding.

The lateral flank 7 and the front flank 8 of the head of the tool body 2 are provided with a projection 9 and a projection 10, and a top surface 11 is also provided with a projection 12. A flow path 13 is bored from the rear end along the axial center inside the tool main body 2, but branches into three in the vicinity of the head, one of which protrudes to the protruding portion 9 and the other of which protrudes. The part 10 and the other one towards the projection 12 are each open at the projection.

The opening direction at the protruding portion 9 is directed to the lateral flank surface 14 of the cutting edge tip 3, the opening direction at the protruding portion 10 is directed to the front flank surface 15 of the cutting edge tip 3, and at the protruding portion 12. The opening direction is directed to the rake face 16 of the cutting edge tip 3. Therefore, the coolant liquid that has flowed in from the rear end of the tool body 2 is directly sprayed from the three openings through the flow path 13 to the lateral flank surface 14, the front flank surface 15 and the rake surface 16 of the cutting edge tip 3. Supplied.

The coolant liquid sprayed on the rake face 16 suppresses crater wear and improves chip discharge,
The jet from the rake face 16 cannot be said to be completely supplied to the center of the cutting point. Therefore, in the present invention, an injection port is also provided on the flank side to further enhance the cooling effect and suppress flank wear. Injection from the side to the flank of the cutting edge tip 3 has the advantage that it can be injected and supplied over the entire cutting depth from the corner of the cutting edge tip 3 as compared to conventional injection from below. Since the two openings are provided, the coolant injection effect does not change even when the cutting direction changes and the main cutting edge changes.

[0016]

As described above, according to the turning tool of the present invention, irrespective of the cutting direction, the flanks of the main cutting edge and the sub cutting edge are extended from the corner of the cutting edge tip to the entire cutting depth. Coolant liquid is injected and supplied to the rake face, so that the coolant liquid can be sufficiently supplied to the cutting point, suppressing cutting heat, extending tool life, improving chip discharge, etc. Is planned.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a turning tool of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a left side view of the above embodiment.

[Explanation of symbols]

 1 Turning Tool 2 Tool Body 3 Cutting Edge Tip 9, 10, 12 Projection 13 Flow Path 14 Side Flank 15 Front Flank 16 Rake Face

Claims (2)

[Claims] 1. A cutting edge tip (3) is attached to the tip of a tool body (2), and a coolant liquid flow path (13) is formed inside the tool body (2) so that the coolant liquid flows toward the cutting edge tip (3). Turning tool 1 designed to be jet-supplied
In the tool body 2, a lateral flank 7 side and a front flank 8 side are respectively provided with a projection 9 and a projection 10. The projection 9 and the projection 10 have a lateral flank of the cutting edge tip 3. A turning tool having a flow path 13 that opens so that a coolant liquid is jetted and supplied toward the front clearance surface 14 and the front clearance surface 15. 2. The projecting portion 1 on the side of the rake face 11 of the tool body 2.
2. The flow path 13 is provided with 2 and the projection 12 is also provided with a flow path 13 that opens so that the coolant is jetted and supplied toward the rake face 16 of the cutting edge tip 3. Turning tool to do.