Processing tips and tools using the same

Abstract

A processing tip including a first processing part, and a second processing part attached to an upper surface of the first processing part and having a front portion and a rear portion, the front portion having an apex and a first width and the rear portion having a second width, the first width being narrower than the second width.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which:

FIG. 1A illustrates a perspective view of a processing tip according to an embodiment of the present invention;

FIG. 1B illustrates a cross-sectional view of the processing tip taken along line A-A′ in FIG. 1A;

FIG. 1C illustrates a cross-sectional view of a cutting tool employing the processing tip illustrated in FIG. 1A and a workpiece cut by the same;

FIG. 1D illustrates a conceptual view of gradual abrasion of a processing tip according to an embodiment of the present invention;

FIG. 1E illustrates a partial front view of a saw-type cutting tool having processing tips according to an embodiment of the present invention;

FIG. 2A illustrates a perspective view of a processing tip according to another embodiment of the present invention;

FIG. 2B illustrates a partial front view of a saw-type cutting tool having processing tips according to the embodiment illustrated in FIG. 2A;

FIG. 3 illustrates a perspective view of a processing tip according to another embodiment of the present invention;

FIG. 4A illustrates a top view of a processing tip according to another embodiment of the present invention;

FIGS. 4B-4C illustrate perspective views of processing tips according to additional embodiments of the present invention;

FIGS. 5A-5B illustrate perspective views of processing tips according to additional embodiments of the present invention;

FIG. 6A illustrates a partial perspective view of processing tips according to another embodiment of the present invention;

FIG. 6B illustrates a partial front view of a saw-type cutting tool having processing tips according to the embodiment illustrated in FIG. 6A;

FIG. 7A illustrates a partial perspective view of processing tips according to another embodiment of the present invention;

FIG. 7B illustrates a partial front view of a saw-type cutting tool having processing tips according to the embodiment illustrated in FIG. 7A;

FIG. 8A illustrates a perspective view of a processing tip according to another embodiment of the present invention;

FIG. 8B illustrates a cross-sectional view of the processing tip taken along line A-A′ in FIG. 8A;

FIG. 9A illustrates a perspective view of a processing tip according to another embodiment of the present invention;

FIG. 9B illustrates a perspective view of a tube-type cutting tool having the processing tip illustrated in FIG. 9A;

FIG. 9C illustrates a cross-sectional view of a workpiece cut by the cutting tool in FIG. 9B; and

FIG. 10 illustrates a perspective view of a tube-type cutting tool having processing tips according to another embodiment of the present invention.

Claims

1. A processing tip of a cutting tool, comprising: a first processing part; anda second processing part attached to an upper surface of the first processing part and having a front portion and a rear portion, the front portion having an apex and a first width and the rear portion having a second width, the first width being narrower than the second width.

2. The processing tip as claimed in claim 1, wherein the first processing part and the second processing part include an abrasive material.

3. The processing tip as claimed in claim 2, wherein the front portion includes a higher concentration of abrasive material as compared to the rear portion.

4. The processing tip as claimed in claim 2, wherein the front portion includes abrasive material in a concentration ranging from about 0.9 carats/cc to about 1.4 carats/cc, and the rear portion includes abrasive material in a concentration ranging from about 0.6 carats/cc to about 0.9 carats/cc.

5. The processing tip as claimed in claim 2, wherein the abrasive material includes particles of diamond, silica carbide, tungsten carbide, boron nitride, aluminum oxide, or a mixture thereof.

6. The processing tip as claimed in claim 1, wherein a height of the first processing part is longer than a height of the second processing part.

7. The processing tip as claimed in claim 1, wherein a height of the first processing part is equal to or shorter than a height of the second processing part.

8. The processing tip as claimed in claim 2, wherein the first processing part comprises vertical regions A, B, and C, with region B located between region A and region C and including a lower concentration of abrasive material as compared to region A or region C.

9. The processing tip as claimed in claim 8, further comprising a bonding portion, the bonding portion having a lower concentration of abrasive material as compared to region A, region B, or region C.

10. The processing tip as claimed in claim 8, wherein a ratio of a width of the region A to a width of the region B to a width of the region C may range from about 1:1:1 to about 2:1:2.

11. The processing tip as claimed in claim 1, wherein the front portion and the rear portion form a single triangular shape having a base overlapping with a rear edge of the first processing part.

12. The processing tip as claimed in claim 1, wherein the apex of the front portion is positioned at a front edge of the first processing part.

13. The processing tip as claimed in claim 1, wherein the apex of the front portion is positioned at a center of the upper surface of the first processing part.

14. The processing tip as claimed in claim 1, wherein the apex of the front portion is positioned at a side edge of the first processing part.

15. The processing tip as claimed in claim 1, wherein the front portion is curved.

16. The processing tip as claimed in claim 1, wherein a back edge of the rear portion overlaps with a side edge of the first processing part.

17. The processing tip as claimed in claim 1, wherein a ratio of a length of the front portion to a length of the rear portion ranges from about 1:1 to about 3:1.

18. The processing tip as claimed in claim 2, further comprising at least one incising groove extending in a direction perpendicular to a direction of motion of a cutting tool.

19. A cutting tool, comprising: a shank;a plurality of first processing parts interposed along a circumference of the shank; anda plurality of second processing parts, each second processing part being attached to an upper surface of the first processing part and having a front portion and a rear portion, the front portion having an apex and a first width and the rear portion having a second width, the first width being narrower than the second width.

20. The processing tool as claimed in claim 19, wherein the shank is shaped as a disc, a plate, or a tube.