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实用新型
CN202393618U 一种取样用的空心钻头 失效 - 权利终止

一种取样用的空心钻头
摘要：
本实用新型公开了一种取样用的空心钻头。属于机械制造技术领域，涉及一种金属切削用刀具。本实用新型的任务是提供一种取样用的空心钻头。使其操作简单，使用方便，并且成本费用低。其技术方案的要点是：包括有圆柱形钻杆(6)、圆柱形钻柄(9)和合金刀头(4)，其特点是：圆柱形钻杆(6)上设置有与其轴心线相同的圆锥孔(2)，所述圆孔(2)靠近圆柱形钻柄(9)一端的孔口直径大于靠近合金刀头(4)一端的孔口直径；同时，构成内切圆的内刀尖(11)至其轴心线的半径距离小于圆锥孔(2)的孔口直径(1)的一半。本实用新型实现了操作简单，使用方便，并且制造和使用成本费用均低的技术效果，本实用新型结构简单。
摘要（英）：

The utility model discloses a hollow drill for sampling, belongs to the technical field of machinery manufacturing, and relates to a cutter for metal cutting. The task of the utility model is to provide the hollow drill for sampling. The operation is simple, the usage is convenient, and the cost is low. The main point of the technical scheme includes that the hollow drill for sampling comprises a cylindrical drill rod (6), a cylindrical drill handle (9) and an alloy cutter head (4). The hollow drill for sampling is characterized in that a conical bore (2) which has an identical shaft axis with the cylindrical drill rod (6) is arranged on the cylindrical drill rod (6), and the orifice diameter of one end of the conical bore (2) close to the cylindrical drill handle (9) is larger than that of one end close to the alloy cutter head (4); simultaneously the distance from an inner cutter tip (11) forming an inscribed circle to the shaft axis is smaller than half of an orifice diameter (1) of the conical bore (2). The hollow drill for sampling has the advantages of simple operation, convenient usage, low manufacturing and using cost, and simple structure.

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