公开(公告)号：US10889872B2

公开(公告)日：2021-01-12

申请号：US15667390

申请日：2017-08-02

Applicant: Kennametal Inc.

Inventor： Jason W. Goldsmith ,  Yingwei Wu

IPC: C21D6/00 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  B33Y80/00 ,  B22F3/105 ,  B22F3/15 ,  B22F3/24 ,  C22C38/52 ,  C22C38/46 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  C21D1/25 ,  B23K26/342 ,  C22C33/02 ,  B22F3/00

Abstract: In one aspect, methods of foil ling tooling articles from tool steel powder compositions via additive manufacturing techniques are described herein. A method of forming a tooling article comprises consolidating powder alloy into the tooling article via an additive manufacturing technique and heat treating the tooling article to provide the tooling article hardness of 35 to 65 HRC. The tooling article can be formed of an alloy composition comprising 0.2-2 weight percent carbon, 0-1 weight percent manganese, 0-1.5 weight percent silicon, 0-0.3 weight percent nickel, 0-15 weight percent cobalt, at least two of chromium, molybdenum, tungsten and vanadium in a combined amount of 5-25 weight percent and the balance iron. As described herein, the method can further comprise hot isostatic pressing the tooling article prior to the heating treatment.

公开(公告)号：US10300532B2

公开(公告)日：2019-05-28

申请号：US15632985

申请日：2017-06-26

Applicant: Kennametal Inc.

Inventor： Shi Chen ,  Qi Wang ,  Igor Kaufmann ,  Jason Won Goldsmith ,  Yingwei Wu

IPC: B27B27/10 ,  B23C5/28 ,  B23B29/00 ,  B23B27/10 ,  B23B27/16 ,  B23B27/00 ,  B23Q11/10

Abstract: A clamp for a tool holder is disclosed. The clamping tool holder includes a body having an insert-receiving pocket and a threaded clamp-receiving bore with a coolant opening for receiving pressurized coolant from a coolant source. A clamp includes a threaded aperture extending from a top surface to a bottom surface and coolant passages in fluid communication with a coolant header. A clamp screw is threaded into the threaded aperture of the clamp. The clamp screw includes a plurality of coolant passages in fluid communication with the coolant opening of the body, and at least one coolant channel in fluid communication with the coolant passage. Coolant from the coolant source enters the coolant opening of the body, travels into the clamp screw, travels into each coolant passage of the clamp, and then exits the clamp in a direction toward a cutting insert-workpiece interface.

公开(公告)号：US20180369923A1

公开(公告)日：2018-12-27

申请号：US15632985

申请日：2017-06-26

Applicant: Kennametal Inc.

Inventor： Shi Chen ,  Qi Wang ,  Igor Kaufmann ,  Jason Won Goldsmith ,  Yingwei Wu

IPC: B23B27/10 ,  B23B27/16 ,  B23C5/28

Abstract: A clamp for a tool holder is disclosed. The clamping tool holder includes a body having an insert-receiving pocket and a threaded clamp-receiving bore with a coolant opening for receiving pressurized coolant from a coolant source. A clamp includes a threaded aperture extending from a top surface to a bottom surface and coolant passages in fluid communication with a coolant header. A clamp screw is threaded into the threaded aperture of the clamp. The clamp screw includes a plurality of coolant passages in fluid communication with the coolant opening of the body, and at least one coolant channel in fluid communication with the coolant passage. Coolant from the coolant source enters the coolant opening of the body, travels into the clamp screw, travels into each coolant passage of the clamp, and then exits the clamp in a direction toward a cutting insert-workpiece interface.