发明名称 |
Rotary cutting tool, such as a drill, comprising an exchangeable cutting insert, and an exchangeable cutting insert |
摘要 |
A tool shank for use with a cutting insert in a rotary cutting tool includes a body having, and adapted to be rotated about, a central longitudinal tool axis, the body having a tip portion structured to receive at least a portion of the cutting insert therein. The shank also includes a pair of chip flutes formed in the body and a pair of recesses, each recess bordering a respective chip flute. Each recess includes a rim portion extending perpendicular to the tool axis and a bearing surface extending at an incline relative to the tool axis. Each rim portion is adapted to engage a corresponding surface on the cutting insert. Each bearing surface is adapted to engage a corresponding bearing surface on the cutting insert in a manner such that the cutting insert is pulled against the body when the rotary cutting tool is rotated about the tool axis. |
申请公布号 |
US8807888(B2) |
申请公布日期 |
2014.08.19 |
申请号 |
US201313756990 |
申请日期 |
2013.02.01 |
申请人 |
Kennametal Inc. |
发明人 |
Borschert Bernhard;Muhlfriedel Dieter;Schwagerl Jurgen;Frota de Souza, Jr. Ruy;Shultz Michael D.;McCormick Michael R.;Erickson Robert A. |
分类号 |
B23B51/02 |
主分类号 |
B23B51/02 |
代理机构 |
|
代理人 |
Meenan, Esq. Larry R. |
主权项 |
1. A tool shank for use with a cutting insert in a rotary cutting tool, the tool shank comprising:
a body having, and adapted to be rotated about, a central longitudinal tool axis, the body having a tip portion structured to receive at least a portion of the cutting insert therein; a pair of chip flutes formed in the body; and a pair of recesses, each recess bordering a respective chip flute, each recess having:
a rim portion extending perpendicular to the tool axis, anda bearing surface extending at an incline relative to the tool axis, wherein each rim portion is adapted to engage a corresponding surface on the cutting insert, wherein each bearing surface is adapted to engage a corresponding bearing surface on the cutting insert in a manner such that the cutting insert is pulled against the body when the rotary cutting tool is rotated about the tool axis, and wherein each chip flute is disposed at a twist angle and wherein each bearing surface is inclined at an angle corresponding to the twist angle. |
地址 |
Latrobe PA US |