CN104279418A

CN104279418A - Hard alloy bar

Info

Publication number: CN104279418A
Application number: CN201410467537.9A
Authority: CN
Inventors: 刘冰峰
Original assignee: KUNSHAN CHANGYING HARD ALLOY CO Ltd
Current assignee: KUNSHAN CHANGYING HARD ALLOY CO Ltd
Priority date: 2014-09-15
Filing date: 2014-09-15
Publication date: 2015-01-14

Abstract

The invention discloses a hard alloy bar which comprises a bar body and inner channels penetrating through the bar body, wherein the inner channels are curved channels. The invention provides the hard alloy bar which is provided with the curved channels penetrating through the bar body, and an extremely good cooling effect can be achieved in the bar; therefore the bar cutting effect is good, the abrasion resistance is high, and the service life is prolonged.

Description

Hard alloy bar

Technical field

A kind of bar, particularly a kind of hard alloy bar.

Background technique

Traditional cemented carbide pole, is solid bar, after being processed into drill bit with it, can only cool outside when operative workpiece, the effect that cannot reach cooling in its heart portion, cause its cutting effect poor, wear resistance decrease, working life is low, and prior art is unresolved such problem also.

Summary of the invention

For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of curved channel be provided with through bar body, also can reach good cooling-down effect in the inside of bar, thus such bar cutting effect is good, wear-resisting property is good, increases working life.

In order to realize above-mentioned target, the present invention adopts following technological scheme:

Hard alloy bar, comprising: bar body, and through the inner passage of bar body, inner passage is curved channel.

Aforesaid hard alloy bar, inner passage has many, and many inner passages are intersected intersection point.

Aforesaid hard alloy bar, intersection point is multiple.

Aforesaid hard alloy bar, the central shaft of multiple inner passage overlaps.

Aforesaid hard alloy bar, the central shaft of inner passage overlaps with the central shaft of bar body.

Aforesaid hard alloy bar, inner passage has two, and two inner passages are intersected 5 intersection points.

Usefulness of the present invention is: the invention provides a kind of curved channel be provided with through bar body, also can reach good cooling-down effect in the inside of bar, thus such bar cutting effect is good, and wear-resisting property is good, increases working life.

Accompanying drawing explanation

Fig. 1 is the sectional view of a kind of embodiment of the present invention;

Fig. 2 is the side view of a kind of embodiment of the present invention;

The implication of reference character in figure:

1 inner passage, 2 bar bodies, 3 intersection points, 4 central shafts.

Embodiment

Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.

Hard alloy bar, comprising: bar body 2, and through the inner passage 1 of bar body 2, inner passage 1 is curved channel.Inner passage 1 is designed to curve, and the design of curve increases the area of contact of condensable product and bar body 2, and the heat of bar body 2 can be taken out of uniformly; In order to can farthest be taken out of fast by even heat, the curvature of curved channel is 30 degree.

Inner passage 1 has many, and many inner passages 1 are intersected intersection point 3, and intersection point 3 is multiple; The central shaft 4 of multiple inner passage 1 overlaps; The central shaft 4 of inner passage 1 overlaps with the central shaft 4 of bar body 2; An overall formation spirality; The longitudinal section of inner passage 1 is circular.

As shown in the figure, preferred as one, inner passage 1 has two, and two inner passages 1 are intersected 5 intersection points 3.

The invention provides a kind of curved channel be provided with through bar body 2, also can reach good cooling-down effect in the inside of bar, thus such bar cutting effect is good, wear-resisting property is good, increases working life.

More than show and describe basic principle of the present invention, major character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the present invention in any form, the technological scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.

Claims

1. hard alloy bar, is characterized in that, comprising: bar body, and through the inner passage of above-mentioned bar body, above-mentioned inner passage is curved channel.

2. hard alloy bar according to claim 1, is characterized in that, above-mentioned inner passage has many, and above-mentioned many inner passages are intersected intersection point.

3. hard alloy bar according to claim 2, is characterized in that, above-mentioned intersection point is multiple.

4. hard alloy bar according to claim 2, is characterized in that, the central shaft of above-mentioned multiple inner passage overlaps.

5. hard alloy bar according to claim 4, is characterized in that, the central shaft of above-mentioned inner passage overlaps with the central shaft of bar body.

6. hard alloy bar according to claim 2, is characterized in that, above-mentioned inner passage has two, and above-mentioned two inner passages are intersected 5 intersection points.