JPS63141281U

JPS63141281U -

Info

Publication number: JPS63141281U
Application number: JP3413787U
Authority: JP
Priority date: 1987-03-09
Filing date: 1987-03-09
Publication date: 1988-09-16
Also published as: JPH0340957Y2

Description

[Brief explanation of the drawing]

第１図は本考案の掘削用カツターヘツドの一実
施例の説明図、第２図は第１図の―方向矢視
図、第３図は第１図におけるフイツシユテールの
詳細図、第４図は第３図の―方向矢視図、第
５図は第１図におけるカツタービツトの詳細図、
第６図は第５図の―方向矢視図、第７図は従
来のカツターヘツドの一例を示す説明図、第８図
は第７図の―方向矢視図、第９図は第７図に
おけるカツタービツトの詳細図である。１はカツターボデイ、２はフイツシユテール、
３は掘削刃、６，９は超硬チツプ、７は側方掘削
刃、１０はカツタービツト、αはすくい角、βは
逃げ角、γはラジアルレークを示す。 Fig. 1 is an explanatory diagram of one embodiment of the cutter head for excavation of the present invention, Fig. 2 is a view taken in the - direction of Fig. 1, Fig. 3 is a detailed view of the fishtail in Fig. Figure 3 is a view in the direction of the arrow, Figure 5 is a detailed view of the cutter bit in Figure 1,
Fig. 6 is a view in the - direction arrow of Fig. 5, Fig. 7 is an explanatory diagram showing an example of a conventional cutter head, Fig. 8 is a - direction arrow view of Fig. 7, and Fig. 9 is a view in the - direction arrow of Fig. 7. FIG. 1 is cutter body, 2 is fishtail,
3 is a drilling blade, 6 and 9 are carbide tips, 7 is a side drilling blade, 10 is a cutter bit, α is a rake angle, β is a relief angle, and γ is a radial rake.

Claims

[Scope of utility model registration request]

A cutter bit is provided at the tip of the cutter body with a cutter bit in the shape of a middle and high mountain, and the rake angle is 3 to 7 degrees and the relief angle is 5 to 10 degrees.
A cutter head for excavation, characterized in that the cutter head is fixed so that the radial rake is 20 to 30 degrees, and the angle formed by the tangent between the fish tail and the outermost cutter bit is 40 to 50 degrees.