PARTIALLY HARDENED ROTARY TOOL AND CORRESPONDING PRODUCTION METHOD

WIPO Patent Application WO/2015/139680

A3

The invention relates to a rotary tool (10, 40, 60, 80, 100, 120, 150) for the chip-forming machining of workpieces, comprising at least one main body (152). The at least one main body has a clamping segment (82, 136, 14), a tool head (12, 42, 62, 84, 102, 122, 156) having one or more chip-forming edges (14, 22, 46, 48, 68, 96, 112, 116, 134, 138, 158, 162) that form a chip-forming region, and at least one coolant channel (24, 52, 66, 88, 106, 126, 164) for feeding a cooling and lubricating fluid into the chip-forming region of the tool head (12, 42, 62, 84, 102, 122, 156). According to the invention at least one partial surface section of the chip-forming region forms a hardening region (26, 54, 72, 90, 114, 130, 166), which covers and/or bounds the coolant channel (24, 52, 66, 88, 106, 126, 164) and is surface-hardened. In a secondary aspect, the invention further relates to a production method for a rotary tool (10, 40, 60, 80, 100, 120, 150) having at least one coolant channel (24, 52, 66, 88, 106, 126, 164) in the chip-forming region of the tool head (12, 42, 62, 84, 102, 122, 156), which coolant channel is covered by at least one hardening region (26, 54, 72, 90, 114, 130, 166).

WO/2021/255851	COOLANT SUPPLY MECHANISM
JP6362517	Cutting tools
JPS52136488	GUN DRILL

PCT/DE2015/000128

November 12, 2015

March 20, 2015

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GÜHRING KG (DE)

B23B51/06; C21D9/22; C21D10/00

DE102011000793A1	2012-08-23
US3555935A	1971-01-19
US4704055A	1987-11-03
US5873683A	1999-02-23
US20110036225A1	2011-02-17
US20120063858A1	2012-03-15

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