Profile router bit and method of preparing the same

Abstract

The present invention relates to a profile router bit and a method of preparing the same, including a shank, the profile router bit including a shank connected to a rotating shaft, a plurality of grinding tips radially mounted onto an upper surface of the shank, and a filler coating applied to the upper surface of the shank between the grinding tips.

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. 1 illustrates a perspective view of a profile router bit according to an embodiment of the present invention;

FIG. 2 illustrates a cross-sectional view of a profile router bit taken along line A-A′ in FIG. 1;

FIGS. 3A-3G illustrate perspective views of profile router bits according to other embodiments of the present invention;

FIG. 4 illustrates a perspective view of a grinding tool employing a profile router bit according to an embodiment of the present invention; and

FIG. 5 illustrates perspective views of workpieces processed with a profile router bit according to an embodiment of the present invention;

FIG. 6 illustrates a block diagram of a preparation method of a profile

Claims

1. A profile router bit, comprising: a shank connected to a rotating shaft;a plurality of grinding tips radially mounted onto an upper surface of the shank; anda filler coating on the upper surface of the shank between the grinding tips.

2. The profile router bit as claimed in claim 1, wherein the shank includes a bore.

3. The profile router bit as claimed in claim 1, further comprising a connecting device.

4. The profile router bit as claimed in claim 1, further comprising a bearing.

5. The profile router bit as claimed in claim 1, wherein the grinding tips are disposed at equal intervals.

6. The profile router bit as claimed in claim 1, wherein the grinding tips comprise a mixture including metal and diamond.

7. The profile router bit as claimed in claim 6, wherein the metal includes cobalt (Co), copper (Cu), tin (Sn), iron (Fe), zinc (Zn), nickel (Ni), or a mixture thereof.

8. The profile router bit as claimed in claim 7, wherein the metal includes from about 30% to about 40% by weight of cobalt (Co), from about 30% to about 40% by weight of copper (Cu), from about 10% to about 15% by weight of tin (Sn), from about 10% to about 15% by weight of iron (Fe), from about 3% to about 5% by weight of zinc (Zn), and from about 3% to about 5% by weight of nickel (Ni).

9. The profile router bit as claimed in claim 1, wherein the filler coating has a thickness equal to a height of the grinding tips.

10. The profile router bit as claimed in claim 1, wherein the filler coating includes epoxy resin, phenol resin or a mixture thereof.

11. The profile router bit as claimed in claim 10, wherein the filler coating further includes diamond, tungsten carbide, silicate carbide, aluminum oxide, or a mixture thereof.

12. The profile router bit as claimed in claim 11, wherein the filler coating includes from about 60% to about 80% by weight of epoxy resin, from about 15% to about 25% by weight of phenol resin, and from about 10% to about 20% by weight of tungsten carbide.

13. A method of producing a profile router bit, comprising: mixing metal and abrasive material to form a mixture;mixing filler components to form a filler coating;injecting the mixture into a mold to form a plurality of grinding tips;sintering the mold;cooling the mold;separating the grinding tips from the mold;welding the plurality grinding tips to a shank;applying the filler coating to the shank between the grinding tips to form a router bit;thermosetting the router bit; andpost-processing the router bit to form a profile router bit.

14. The method as claimed in claim 13, wherein injecting the mixture into a released mold includes setting in a carbon mold.

15. The method as claimed in claim 13, wherein sintering the mold includes setting a pressure range from about 200 Kg/cm2 to about 300 Kg/cm2 and a temperature range from about 700° C. to about 800° C.