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1. 发明申请

US20200222994A1 STEP DRILL BIT 审中-公开
公开(公告)号：US20200222994A1
公开(公告)日：2020-07-16
申请号：US16831995
申请日：2020-03-27
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Douglas W. Allen , Courtney D. McCool , Smith C. Theiler , Richard Hohnl, JR.
IPC分类号： B23B51/00 , B23B51/02
摘要： A drill bit includes a shank and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending through the steps. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.

2. 发明申请

US20190329331A1 STEP DRILL BIT 审中-公开
公开(公告)号：US20190329331A1
公开(公告)日：2019-10-31
申请号：US16387621
申请日：2019-04-18
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Brett A. Parendo , Richard Hohnl, JR. , David Hlavac , Alexander R. Greenhill , Ingolfur Ludviksson
IPC分类号： B23B51/00
摘要： A drill bit includes a shank extending along a bit axis and a body with a proximal end adjacent the shank and a distal end opposite the proximal end. The body defines a plurality of axially stacked, progressively sized steps including a first step at the distal end and a terminal step at the proximal end. The drill bit also includes a flute in the body. The flute defines an elongated groove that extends from the distal end to the proximal end. The drill bit further includes a plurality of cutting edges formed in the body. Each cutting edge is disposed along one of the plurality of steps and defines a helix angle and a rake angle. The helix angle of the cutting edge at the terminal step is greater than the helix angle of the cutting edge at the first step. A ratio of the helix angle to the rake angle of the cutting edge at the first step is in a range from 0.5 to 2.4, and a ratio of the helix angle to the rake angle of the cutting edge at the terminal step is in a range of 0.9 to 1.7.

3. 发明申请

US20160256938A1 CUTTING TOOL 有权
公开(公告)号：US20160256938A1
公开(公告)日：2016-09-08
申请号：US15155274
申请日：2016-05-16
申请人： Milwaukee Electric Tool Corporation
发明人： Douglas Allen , Richard Hohnl, JR. , Jeffrey M. Zeiler , David B. Griep , Mark D. Willer
IPC分类号： B23B51/04 , B27G15/00
CPC分类号： B23B51/0433 , B23B51/00 , B23B51/0413 , B23B51/0473 , B23B2251/02 , B23B2251/50 , B23B2251/60 , B23B2251/603 , B27G15/00 , Y10T29/49826 , Y10T408/03 , Y10T408/892 , Y10T408/8923 , Y10T408/8967 , Y10T408/901 , Y10T408/902 , Y10T408/907 , Y10T408/9098 , Y10T408/90993
摘要： A cutting tool including a body, a blade, a feed shaft, and a locking member. The body defines an axis and is adapted to be received by a spindle of a power tool. The blade is removably supportable on the body and rotatable about the axis for cutting a workpiece. A feed shaft is removably supportable in the body and rotatable about the axis for engaging a workpiece, the feed shaft being mountable in the cutting tool to engage and at least partially restrain the blade. The feed shaft further includes an opening transverse to the axis. The locking member is engageable with the body and with the opening in the feed shaft. Advancement of the locking member into the opening tightens both the blade and the feed shaft to the body.

4. 发明申请

US20130136553A1 CUTTING TOOL 有权
公开(公告)号：US20130136553A1
公开(公告)日：2013-05-30
申请号：US13750306
申请日：2013-01-25
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Douglas Allen , Richard Hohnl, JR. , Jeffrey M. Zeiler , David B. Griep , Mark D. Willer
IPC分类号： B23D77/02 , B23B51/00 , B27G15/00
CPC分类号： B23B51/0433 , B23B51/00 , B23B51/0413 , B23B51/0473 , B23B2251/02 , B23B2251/50 , B23B2251/60 , B23B2251/603 , B27G15/00 , Y10T29/49826 , Y10T408/03 , Y10T408/892 , Y10T408/8923 , Y10T408/8967 , Y10T408/901 , Y10T408/902 , Y10T408/907 , Y10T408/9098 , Y10T408/90993
摘要： A cutting tool including a body, a blade, a feed shaft, and a locking member. The body defines an axis and is adapted to be received by a spindle of a power tool. The blade is removably supportable on the body and rotatable about the axis for cutting a workpiece. A feed shaft is removably supportable in the body and rotatable about the axis for engaging a workpiece, the feed shaft being mountable in the cutting tool to engage and at least partially restrain the blade. The feed shaft further includes an opening transverse to the axis. The locking member is engageable with the body and with the opening in the feed shaft. Advancement of the locking member into the opening tightens both the blade and the feed shaft to the body.

5. 发明公开

US20230302550A1 STEP DRILL BIT 审中-公开
公开(公告)号：US20230302550A1
公开(公告)日：2023-09-28
申请号：US18328181
申请日：2023-06-02
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Brett A. Parendo , Richard Hohnl, JR. , David Hlavac , Alexander R. Greenhill , Ingolfur Ludviksson , Max R. Sawa , James E. Pangerc
IPC分类号： B23B51/00
CPC分类号： B23B51/009 , B23B2251/043
摘要： A step drill bit includes a shank and a body that defines a plurality of axially stacked, progressively sized steps including a first step, a terminal step, and a plurality of intermediate steps having incrementally increasing diameters disposed between the first and terminal steps. The step drill bit includes a flute in the body extending from the distal end to the proximal end and a plurality of cutting edges formed in the body. Each cutting edge is disposed along one of the plurality of steps. Each cutting edge defines a helix angle and a radial rake angle. The helix angle of the cutting edge at a first intermediate step of the plurality of intermediate steps is greater than the helix angle at the first step. The radial rake angle of the cutting edge at the first intermediate step is greater than the radial rake angle at the first step.

6. 发明申请

US20140363244A1 STEP DRILL BIT 有权
标题翻译：步骤钻头
公开(公告)号：US20140363244A1
公开(公告)日：2014-12-11
申请号：US14297777
申请日：2014-06-06
申请人： Milwaukee Electric Tool Corporation
发明人： Douglas W. Allen , Courtney D. McCool , Smith C. Theiler , Richard Hohnl, JR.
IPC分类号： B23B51/00
CPC分类号： B23B51/0081 , B23B51/00 , B23B51/009 , B23B51/02 , B23B2251/40 , B23B2251/50 , B23B2251/52 , B23B2270/36 , Y10T408/21 , Y10T408/906
摘要： A drill bit includes a shank, a transition portion, and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step coupled to the transition portion. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines two body flutes each extending from the first step to the transition portion and disposed at a body flute angle different from the tip flute angle. The drill bit includes a bit tip disposed at the distal end of the body portion and having a chisel edge, a first chisel surface on one side of the chisel edge, and a second chisel surface on an opposite side of the chisel edge. The first chisel surface defines a first relief angle. The second chisel surface defines a second relief angle different from the first relief angle.
摘要翻译：钻头包括柄，过渡部分和限定多个轴向堆叠的逐渐尺寸的步骤的主体部分。这些步骤包括耦合到过渡部分的第一步骤和终端步骤。第一步定义两个尖端凹槽，每个末端凹槽以尖端凹槽角设置。主体部分限定两个主体凹槽，每个凹槽从第一步骤延伸到过渡部分，并且以不同于尖端凹槽角度的身体凹槽角度设置。钻头包括设置在主体部分的远端处并具有凿边缘的钻头尖端，在凿边缘的一侧上的第一凿表面和在凿边缘的相对侧上的第二凿表面。第一凿表面限定第一个斜角。第二凿表面限定与第一凸角不同的第二凸角。

7. 发明申请

US20210316375A1 STEP DRILL BIT 有权
公开(公告)号：US20210316375A1
公开(公告)日：2021-10-14
申请号：US17355500
申请日：2021-06-23
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Brett A. Parendo , Richard Hohnl, JR. , David Hlavac , Alexander R. Greenhill , Ingolfur Ludviksson , Max R. Sawa , James E. Pangerc
IPC分类号： B23B51/00
摘要： A step drill bit includes a shank and a body having a proximal end adjacent the shank and a distal end opposite the proximal end. The body defines a plurality of axially stacked, progressively sized steps including a first step at the distal end, a terminal step at the proximal end, and a plurality of intermediate steps having incrementally increasing diameters disposed between the first and terminal steps. The step drill bit also includes a plurality of cutting edges each disposed along one of the plurality of steps. Each edge defines a helix angle and a radial rake angle. The radial rake angle and the helix angle of the cutting edge at the terminal step is greater than the radial rake angle and the helix angle of the cutting edge at the first step.

8. 发明申请

US20190143422A1 STEP DRILL BIT 审中-公开
公开(公告)号：US20190143422A1
公开(公告)日：2019-05-16
申请号：US16250175
申请日：2019-01-17
申请人： Milwaukee Electric Tool Corporation
发明人： Douglas W. Allen , Courtney D. McCool , Smith C. Theiler , Richard Hohnl, JR.
IPC分类号： B23B51/00 , B23B51/02
摘要： A drill bit includes a shank and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending through the steps. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.

9. 发明申请

US20180311749A1 CUTTING TOOL 审中-公开
公开(公告)号：US20180311749A1
公开(公告)日：2018-11-01
申请号：US15925933
申请日：2018-03-20
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Douglas Allen , Richard Hohnl, JR. , Jeffrey M. Zeiler , David B. Griep , Mark D. Willer
IPC分类号： B23B51/04 , B27G15/00 , B23B51/00
CPC分类号： B23B51/0433 , B23B51/00 , B23B51/0413 , B23B51/0473 , B23B2251/02 , B23B2251/50 , B23B2251/60 , B23B2251/603 , B27G15/00 , Y10T29/49826 , Y10T408/03 , Y10T408/892 , Y10T408/8923 , Y10T408/8967 , Y10T408/901 , Y10T408/902 , Y10T408/907 , Y10T408/9098 , Y10T408/90993
摘要： A cutting tool including a body, a blade, a feed shaft, and a locking member. The body defines an axis and is adapted to be received by a spindle of a power tool. The blade is removably supportable on the body and rotatable about the axis for cutting a workpiece. A feed shaft is removably supportable in the body and rotatable about the axis for engaging a workpiece, the feed shaft being mountable in the cutting tool to engage and at least partially restrain the blade. The feed shaft further includes an opening transverse to the axis. The locking member is engageable with the body and with the opening in the feed shaft. Advancement of the locking member into the opening tightens both the blade and the feed shaft to the body.

10. 发明申请

US20170326651A1 STEP DRILL BIT 审中-公开
公开(公告)号：US20170326651A1
公开(公告)日：2017-11-16
申请号：US15668874
申请日：2017-08-04
申请人： Milwaukee Electric Tool Corporation
发明人： Douglas W. Allen , Courtney D. McCool , Smith C. Theiler , Richard Hohnl, JR.
IPC分类号： B23B51/00 , B23B51/02
CPC分类号： B23B51/0081 , B23B51/00 , B23B51/009 , B23B51/02 , B23B2251/40 , B23B2251/50 , B23B2251/52 , B23B2270/36 , Y10T408/21 , Y10T408/906
摘要： A drill bit includes a shank, a transition portion, and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step coupled to the transition portion. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending from the first step to the transition portion. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.

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