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2. 发明申请

US20160311035A1 Self-Locking Head-Replaceable Hard Alloy Drill Bit 审中-公开
标题翻译：自锁头可更换硬质合金钻头
公开(公告)号：US20160311035A1
公开(公告)日：2016-10-27
申请号：US15134018
申请日：2016-04-20
申请人： CHENGDU FENGYI PRECISION TOOLS MANUFACTURE CO., LTD
发明人： Lugui Peng , Hao Peng
IPC分类号： B23B51/02
CPC分类号： B23B51/02 , B23B2205/02 , B23B2222/28 , B23B2222/84 , B23B2251/02 , B23B2251/043 , Y10T408/90987
摘要： The present invention discloses a self-locking head-replaceable hard alloy drill bit, comprising a cutter head and a cutter bar. The cutter head is disposed at the upper end of the cutter bar, a cylindrical handle is disposed at the lower part of the cutter head, a vertical cylindrical handle holding slot or round handle holding hole is disposed at the upper end of the cutter bar, at least two cutter head notches are disposed on the drilling body of the cutter head, and each cutter head notch is formed by intersecting a first cutter head contact face and a second cutter head contact face, which are vertical or vertically oblique. At least two protrusions which protrude upward are disposed on the wall of the upper end of the cutter bar and have the same number as the cutter head notches. The protrusions have such a structure that during the process of assembling the cutter head and the cutter bar, the cutter head ridge edges and the inner surfaces of the protrusions are in non-contact fit, interference fit and non-interference fit in sequence. According to the present invention, the drill bit realizes rapid assembly/disassembly between the cutter head and the cutter bar, remains stable after assembly, has the self-locking function, and ensures highly-reliable transmission of the cutter head and the cutter bar, and the assembly/disassembly operation does not need screws for fastening and is very convenient and rapid.
摘要翻译：本发明公开了一种自锁头可更换硬质合金钻头，包括刀头和切割杆。刀头设置在切割杆的上端，在刀头的下部设有圆柱形手柄，在切割杆的上端设置有垂直的圆柱形手柄保持槽或圆形手柄保持孔，至少两个刀头凹口设置在刀头的钻孔体上，并且每个刀头切口通过与垂直或垂直倾斜的第一刀头接触面和第二刀头接触面交叉而形成。至少两个向上突出的突起设置在切割杆的上端的壁上，并且具有与切割头凹口相同的数量。这些突起具有这样的结构，即在组装刀头和切割棒的过程中，刀头脊缘和突起的内表面依次是非接触配合，过盈配合和不干涉配合。根据本发明，钻头实现了刀头和切割杆之间的快速组装/拆卸，组装后保持稳定，具有自锁功能，并确保刀头和切割杆的高度可靠的传动，并且组装/拆卸操作不需要用于紧固的螺丝，并且非常方便和快速。

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