JPH01150686U

JPH01150686U -

Info

Publication number: JPH01150686U
Application number: JP4858488U
Authority: JP
Priority date: 1988-04-11
Filing date: 1988-04-11
Publication date: 1989-10-18

Description

[Brief explanation of the drawing]

添付図面は本考案の実施例を示し、第１図は上
面図、第２図は正面図、第３図は右側面図、第４
図は第１図のＸ―Ｘ′線に沿う部分断面図、第５
図は超硬合金製ピン４とピン４の間のシヤンクの
部分６の摩耗の態様を示した図であり、図中１は
シヤンク、２は切刃、３は切刃１近傍のシヤンク
の部分、４は超硬合金製のピン、５はピン穴、６
はピン４とピン４の間の部分である。 The attached drawings show an embodiment of the present invention, in which Fig. 1 is a top view, Fig. 2 is a front view, Fig. 3 is a right side view, and Fig. 4 is a top view.
The figure is a partial cross-sectional view taken along the line X-X' in Figure 1.
The figure shows the state of wear of the shank portion 6 between the pins 4 made of cemented carbide. In the figure, 1 is the shank, 2 is the cutting edge, and 3 is the shank portion near the cutting edge 1. , 4 is a cemented carbide pin, 5 is a pin hole, 6
is the part between pins 4 and 4.

Claims

[Claims for Utility Model Registration] In a carbide tool in which a cutting blade 2 made of cemented carbide is attached to the tip of the shank, and a hard facing is applied to a portion 3 of the shank near the cutting blade 2; The shank 1 is made of iron-based metal, and a large number of pin holes 5 are opened in a predetermined distribution in the hard facing part 3 of the shank 1, and pins 4 made of cemented carbide are press-fitted into the pin holes 5. A carbide tool is characterized in that the four groups of press-fitted pins are used as a hard facing part. 2. The cemented carbide tool according to claim 1, wherein said tool is a flat bit for ground excavation. 2. A carbide tool according to claim 1, wherein said tool is a sword tip type bit.