Blank and tool with cooling channels

• Main Authors: HELBIG ARMIN, SCHWENCK MANFRED
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2012
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; BORING; CASTING; COMBINED OPERATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; POWDER METALLURGY; PUNCHING METAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THREAD CUTTING; TRANSPORTING; TURNING; UNIVERSAL MACHINE TOOLS; WORKING METALLIC POWDER; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTIONTHEREWITH

The application comprises a blank (101, 301) for producing a cutting tool with at least one inner bore (102, 103, 302, 303) for conducting fluids, wherein the blank (101, 301) comprises at least a first and a second portion (108, 109, 308, 309) along its longitudinal axis (104, 304), wherein the inner bore (102, 103, 302, 303) in the first portion (109, 309) is formed substantially in a straight line and parallel to the longitudinal axis (104, 304) of the blank (101, 301), and the inner bore (102, 103, 302, 303) in the second portion (108, 308) has a first twist with a first twist angle greater than zero, wherein the blank (101, 301) can be obtained by a continuous pressing operation, in particular a continuous extruding operation. The application also describes an extrusion device (408, 508) for producing a blank (401, 501), wherein the extrusion device (408, 508) comprises a control element (513) for controlling the twist angle, in particular the first and/or second twist angle.