JPH02110410U - - Google Patents

Description

[Brief explanation of drawings]

Figures 1 to 13 show an embodiment of the vertical milling cutter of this invention. Figure 1 is a side view of the vertical milling cutter, Figure 2 is a view of the tip in the axial direction, and Figure 3 is a view of the milling cutter body. Outer circumference (tip)
FIG. 4 is a diagram showing a modification of the tip shown in FIG. 3; FIG. 5 is a plan view showing the outer periphery (tip) of the chip; FIG. 6 is a view taken in the direction of the arrow in FIG. Fig. 7 is a direction arrow view of Fig. 5, Fig. 8 is a directional view of Fig.
The figure is an enlarged view of the part indicated by the arrow in Fig. 2 showing the rotation locus of the outer peripheral tip, Fig. 9 is a side sectional view showing the cutting state of the workpiece, and Fig. 10 is the part indicated by the arrow in Fig. 1. An enlarged view, FIG. 11 is a side sectional view showing the machining state of the work material, and FIG. 12 is a partially fragmented side view showing a modification of the vertical milling cutter shown in FIG. 1.
3 is an enlarged view of the part indicated by the arrow in FIG. 12, FIGS. 14 to 16 show other embodiments of the present invention, FIG. 14 is a partially fragmented side view of the vertical milling cutter, and FIG. 15 is a partially fragmented side view of the vertical milling cutter. Direction arrow view of Fig. 14, 1st
FIG. 6 is a directional view of FIG. 14. 17 to 25 show an example of a conventional vertical milling cutter, in which FIG. 17 is a partially fragmented side view, FIG. 18 is a view taken in the direction of the arrow in FIG. 17, and FIG. Fig. 20 is a perspective view showing the machining state of the work material, Fig. 21 is an enlarged view of the part indicated by the arrow in Fig. 17, and Fig. 22 is a side view showing the machining state of the work material. 23 is a plan view showing the tip, FIG. 24 is a view taken in the direction of the arrow in FIG. 23, and FIG. 25 is a view taken in the direction of the arrow in FIG. 23. DESCRIPTION OF SYMBOLS 10... Milling cutter body, 30a... Tip tip (tip tip part), 30b... Outer circumference tip (outer circumference tip part), 31... Upper surface, 32... Cutting blade, 32
c...Central part, 34...Rake face.

Claims (1)

[Scope of utility model registration request] A tip part is provided on the outer periphery of the tip of the milling cutter body that rotates around the axis, with its main cutting edge located on the tip side of the milling cutter body and forward in the rotational direction, and with a positive axial rake angle. An outer peripheral tip portion is provided on the outer periphery with its main cutting edge located on the outer peripheral side of the milling cutter body and forward in the rotational direction and with a negative axial rake angle, and the tip portion and the outer peripheral tip portion are A main cutting edge is formed on the ridge of the plane as a polygon in plan view, and a rake face continuous to this main cutting edge is formed outside the line connecting the tip of the cutting edge and the rear end of the cutting edge at the center of the main cutting edge. It is formed by a convex curved surface protruding in the direction, and further, the diameter of the main cutting edge of the distal tip portion in the rotation trajectory is 0.1 mm to 3 mm larger than the diameter of the main cutting edge of the outer peripheral tip portion in the rotation trajectory.
．． Vertical milling cutter characterized by setting 0mm larger.