Cutting insert and Tool mounted withthere

A cutting insert of the present invention is a polygonal cutting insert including an upper surface, a lower surface, and a side surface. The upper surface has a corner portion, and a first corner portion and a second corner portion, respectively, extending from the corner portion. A corner cutting e...

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Bibliographic Details
Main Authors KIM YOUNG HEUM, KIM HYO SAN, KIM SUNG HUN, MIN BYUNG HOON
Format Patent
LanguageEnglish
Korean
Published 08.06.2021
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Summary:A cutting insert of the present invention is a polygonal cutting insert including an upper surface, a lower surface, and a side surface. The upper surface has a corner portion, and a first corner portion and a second corner portion, respectively, extending from the corner portion. A corner cutting edge is provided in the corner portion, a first cutting edge is provided in the first corner portion, and a second cutting edge is provided in the second corner portion, respectively. The upper surface has, along center lines connecting the centers of corner portions and the center of the upper surface, a first raised portion and a second raised portion stepped from the first raised portion. The first raised portion is formed so as to be closer to the corner portions than the second raised portion and declines from the second raised portion toward the corner portions. The second raised portion is formed at a position higher than the first raised portion from a bottom surface, and side portions connected to the first raised portion decline from the second raised portion toward the first cutting edge and the second cutting edge. In accordance with the present invention, the life of the cutting insert can be increased. 본 발명의 절삭 인서트는, 상면, 하면, 및 측면을 포함하는 다각형 절삭 인서트로서, 상기 상면은 코너부와, 상기 코너부로부터 각각 연장되는 제1 모서리부 및 제2 모서리부를 구비한다. 또한, 상기 코너부에는 코너절인이, 상기 제1 모서리부에는 제1 절인이, 상기 제2 모서리부에는 제2 절인이 각각 구비된다. 그리고 상기 상면에는 상기 코너부의 중심과 상기 상면의 중심을 잇는 중심선을 따라서, 제1 융기부와, 상기 제1 융기부에 단차진 제2 융기부가 형성되고, 상기 제1 융기부는 상기 제2 융기부보다 상기 코너부에 가까이 위치하고, 상기 제2 융기부에서 상기 코너부 쪽으로 하향 되게 경사지며, 상기 제2 융기부는 상기 제1 융기부보다 상기 하면으로부터 높은 위치에 형성되며, 상기 제1 융기부와 연결된 변부는 상기 제2 융기부에서 상기 제1 절인 및 상기 제2 절인 쪽으로 하향 경사진 것을 특징으로 한다.
Bibliography:Application Number: KR20190176363