JPS6288511U

JPS6288511U -

Info

Publication number: JPS6288511U
Application number: JP18240085U
Authority: JP
Priority date: 1985-11-26
Filing date: 1985-11-26
Publication date: 1987-06-06

Description

[Brief explanation of the drawing]

第１図は、この考案の基本的チツプの平面図、
第２図はそのＸ方向視側面図、第３図はＹ方向視
側面図、第４図は正面図、第５図は実施例のチツ
プの平面図、第６図はそのＸ方向視側面図、第７
図はＹ方向視側面図、第８図は正面図、第９図は
正面中央部の拡大図、第１０図は上面の鈍角コー
ナ部の拡大図、第１１図はドリルへの適用の一例
を示す平面図、第１２図はその側面視断面図、第
１３図はドリルへの適用の他の例を示す平面図、
第１４図はその側面視断面図である。１…上面、２…下面、３…対向側面、４…他の
対向側面、６…切断面、７…鈍角コーナにおける
側面の交線、８…シンニング溝、９…主切刃、１
０…中心部切刃、１１…チゼル刃、１２…貫通孔
、１３…チツプブレーカ溝、１５…スローアウエ
イチツプ。 Figure 1 is a plan view of the basic chip of this invention.
Fig. 2 is a side view of the chip as seen in the X direction, Fig. 3 is a side view as seen in the Y direction, Fig. 4 is a front view, Fig. 5 is a plan view of the chip of the embodiment, and Fig. 6 is a side view of the chip as seen in the X direction. , 7th
The figure is a side view as viewed in the Y direction, Figure 8 is a front view, Figure 9 is an enlarged view of the central part of the front, Figure 10 is an enlarged view of the obtuse corner of the top surface, and Figure 11 is an example of application to a drill. 12 is a side sectional view thereof, and FIG. 13 is a plan view showing another example of application to a drill.
FIG. 14 is a side sectional view thereof. 1...Top surface, 2...Bottom surface, 3...Opposing side surface, 4...Other opposing side surface, 6...Cut surface, 7...Intersecting line of side surfaces at obtuse corner, 8...Thinning groove, 9...Main cutting edge, 1
0...Central cutting edge, 11...Chisel blade, 12...Through hole, 13...Chip breaker groove, 15...Throwaway tip.

Claims

[Claims for Utility Model Registration] (1) The basic shape is a top surface and a bottom surface that are parallel to each other, two opposing sides that intersect with the top surface at an angle of 90 degrees or less, and two other opposing sides that intersect the bottom surface at an angle of 90 degrees or less. It has a substantially rhombic shape, and near one of the acute corners there is a cut surface obtained by cutting off the acute corner with a certain dimension, and each intersection line at the obtuse corner between the two opposing sides and the other two opposing sides. There is a pair of point-symmetrical thinning grooves in the area with respect to the midpoint of the intersection line, and a part of the intersection line between the groove and the side surface is the main point formed by the acute intersecting edges of the upper and lower surfaces and the side surface. A throw-away tip that connects to the cutting edge and forms the central cutting edge. (2) The width between the pair of thinning grooves is 0 to 0.
There is a 4 mm chisel blade, and the central cutting edge is in a straight line with an inclination of 25 to 60 degrees with respect to the main cutting edge of the blade, and the ridgeline at the bottom of the thinning groove is on the top surface. Utility model registration claim No. 1 characterized in that the obtuse corner is inclined by 25 to 50 degrees with respect to the bisector of the corner angle when viewed.
Throwaway tips listed in ). (3) Chip breaker grooves are present on the upper and lower surfaces along the main cutting edge, and the connection between the center cutting edge and the main cutting edge is formed by a convex arc curve. Scope of claims for utility model registration characterized by
Throwaway tip described in paragraph (1) or paragraph (2). (4) Utility model registration claim No. The throw-away tip according to any one of items 1) to (3).