JPS6235712U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 6 show a first embodiment of the milling tool of this invention, and Figure 1 is a front view of the milling tool;
Figure 2 is its side view, Figure 3 is its bottom view, and Figure 4 is its side view.
The figure is a front view of the throw-away tip attached to the milling tool, FIG. 5 is a view taken in the direction of arrow A in FIG. 4, and FIG. 6 is a view taken in the direction of arrow B in FIG. 4. Figures 7 to 9 show a second embodiment of the milling tool of this invention.
The figure is a front view of the throw-away tip attached to this milling tool, Figure 8 is a view in the direction of arrow C in Figure 7,
The figure is a view taken in the direction of arrow D in FIG. 7. Figures 10 to 15
The figures show a third embodiment of the milling tool of this invention, in which Fig. 10 is a front view of the milling tool, Fig. 11 is a side view thereof, Fig. 12 is a bottom view thereof, and Fig. 13 is a milling tool. 14 is a front view of the throw-away tip attached to a cutting tool, FIG. 14 is a view taken along arrow E in FIG. 13, and FIG. 15 is a view taken along arrow F in FIG. 13. Figures 16 to 21 show a fourth embodiment of the milling tool of this invention, with Figure 16 being a front view of the milling tool, Figure 17 being a side view thereof, and Figure 18 being a bottom view thereof. , FIG. 19 is a front view of the throw-away tip attached to a milling tool, FIG. 20 is a view taken in the direction of the G arrow in FIG. 19, and FIG. 21 is a view taken in the direction of the H arrow in FIG. 19. Figures 22 to 24 show a fifth embodiment of the milling tool of this invention.
FIG. 22 is a front view of the throw-away tip attached to this milling tool, FIG. 23 is a view taken in the direction of the J arrow in FIG. 22, and FIG. 24 is a view taken in the direction of the K arrow in FIG. 22. 25 to 30 show a conventional example of the milling tool of this invention. FIG. 25 is a front view of the milling tool, FIG. 26 is a side view thereof, and FIG. 27 is a bottom view thereof. Fig. 28 is a front view of the throw-away tip attached to a milling tool, Fig. 29 is a view taken from the direction of the L arrow in Fig. 28,
FIG. 30 is a view taken along arrow M in FIG. 28. 1, 41, 51... Tool body, 20, 31, 4
4, 54, 60... Throwaway tip, 21
...Top surface, 23... Side part, 24, 32, 45, 5
5, 63... Main cutting edge, 28... Lower surface, 25, 35
, 47, 57, 64... Cutting blade tip, 26... Cutting blade rear end, 27, 33, 46... Rake face, 29, 3
4, 67...Maximum thickness part, 30...Center, 65...
...Secondary cutting edge, Y...imaginary line.

Claims (1)

[Scope of utility model registration request] A throw-away milling tool in which a throw-away tip is removably attached to the outer periphery of the tip of the tool body along one circumference with a positive mounting inclination angle corresponding to a positive axial rake angle, The throw-away chip has a rake face of the main cutting edge formed on at least one pair of opposing sides of the upper surface, and a maximum thickness part between the upper surface and the lower surface forming the seating surface of the main cutting edge. The above-mentioned maximum of the pair of main cutting edges is located at a location biased toward the cutting edge tip side from the center between the cutting edge tip and the cutting edge rear end, and is formed on sides where the shapes of the above-mentioned side portions are opposite to each other. 1. A throw-away milling tool, characterized in that it is formed of a convex curved surface that is symmetrical with respect to the imaginary line when viewed from the side in a direction along the imaginary line connecting the thick parts.