JPH02126706U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は実施例の拡大平面図、第２図は同一部
切欠平面図、第３図は同一部切欠側面図、第４図
は第３図のＡ−Ａにおける断面図、第５図は同使
用状態を示す説明図である。第６図は従来のチツ
プによる加工面の表面粗さを示すグラフ、第７図
は本実施例のチツプによる加工面の表面粗さを示
すグラフである。 １……仕上加工用チツプ、２……各コーナー部
、３……横切込角、４……刃先頂角、５……刃先
ノーズ曲率半径、６……ボーリングバイトホルダ
、７……長さＬ、８……直径Ｄ、９……被加工物
、１０……加工面。 Fig. 1 is an enlarged plan view of the embodiment, Fig. 2 is a partially cutaway plan view of the same, Fig. 3 is a partially cutaway side view of the same, Fig. 4 is a sectional view taken along A-A in Fig. 3, and Fig. 5 is It is an explanatory view showing the usage state. FIG. 6 is a graph showing the surface roughness of the machined surface by the conventional chip, and FIG. 7 is a graph showing the surface roughness of the machined surface by the chip of this embodiment. 1... Finishing chip, 2... Each corner, 3... Lateral penetration angle, 4... Cutting edge apex angle, 5... Cutting edge nose curvature radius, 6... Boring bite holder, 7... Length L, 8... Diameter D, 9... Workpiece, 10... Machining surface.

Claims (1)

【実用新案登録請求の範囲】 (1) 切削加工用のチツプ周縁の各コーナー部の
先端を所定形状に切欠し、チツプ周縁の各コーナ
ー部の横切込角の角度を３０゜以上６０゜以下の
範囲にしたことを特徴とする仕上加工用チツプ。 (2) 切削加工用のチツプ周縁の各コーナー部の
先端の刃先ノーズ曲率半径を０．０２mm以上０．
０５mm以下の範囲にしたことを特徴とする請求項
１記載の仕上加工用チツプ。[Scope of Claim for Utility Model Registration] (1) The tip of each corner of the periphery of a chip for cutting is notched into a predetermined shape, and the lateral cutting angle of each corner of the periphery of the chip is set to 30° or more and 60° or less A chip for finishing processing characterized by a range of . (2) The radius of curvature of the cutting edge nose at the tip of each corner of the periphery of the cutting chip should be 0.02 mm or more.
2. The finishing chip according to claim 1, wherein the chip has a diameter of 0.05 mm or less.