Welding alloy drill
A technology for welding alloys and cutter heads, which is used in drilling repairs, drilling tool accessories, metal processing equipment, etc. The effect of increasing drilling speed
Inactive Publication Date: 2019-12-10
张英芹
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- Application Information
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Problems solved by technology
However, the price of raw materials of cemented carbide is relatively high, and production and processing are not easy, so the price of drill bits using cemented carbide is relatively expensive, which virtually increases the production cost
Method used
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Embodiment Construction
[0015] In order to facilitate those skilled in the art to understand the present invention, the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
[0016] refer to Figure 1 to Figure 2 , The present invention provides a welded alloy drill, comprising a cutter body 1, a cutter head 2 arranged at one end of the cutter body, and several blades 3 arranged on the cutter head 2 for cutting workpieces. The cutter body 1 and the cutter head 2 are in the shape of a cylinder, and are integrally formed by high-speed tool steel. A through hole 4 is provided at the middle position between the cutter body and the cutter head, that is, at the position of the axis. The through hole 4 is conducive to reducing the contact area between the drill bit and the workpiece during drilling, reducing the cutting amount, making the cutting speed faster, and then drilling faster.
[0017] On the end face of the cutter head 2, ...
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The invention relates to a welding alloy drill. The welding alloy drill comprises a cutter body, a cutter bit arranged at one end of the cutter body and multiple blades arranged on the cutter bit. A through hole penetrating through the cutter body and the cutter bit is formed in the middle positions of the cutter body and the cutter bit. Multiple convex portions are circularly distributed on the end face of the cutter bit, the distances between the adjacent convex portions are equal, and the blades are connected with the convex portions through welding. Multiple grooves for chip removal are formed in the peripheral surface of the cutter bit. The hard alloy blades are connected to the cutter bit through welding, the use quantity of hard alloys is reduced while the performance of a drill bitis guaranteed, and therefore the production cost is reduced. On the other hand, by means of the through hole in the middles of the cutter body and the cutter bit, the contact area between the drill bit and a machined workpiece is reduced, the cutting amount is reduced, the drilling speed is increased, and by means of the grooves formed in the peripheral surface of the cutter bit, chip removal inthe drilling process is facilitated.
Description
technical field [0001] The invention relates to the field of mechanical drilling, in particular to a welding alloy drill. Background technique [0002] The drill bit is a special tool for machining holes on the surface of the workpiece. The head of the drill bit is used for cutting, and its cutting edge and chisel edge work as tools. The shape of its cutting edge is designed according to the contour of the required hole. Only one drilling operation can process the required hole. The operation is simple and efficient. The types of drills mainly include twist drills, center drills, and deep holes. Drilling, reaming, etc. Drill bits are generally made of high-speed tool steel or hard alloy. Hard alloy has high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance. The drill bit made of hard alloy can be used for high manganese steel, stainless steel Drilling operations such as difficult-to-machine materials. However, the price of ra...
Claims
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IPC IPC(8): B23B51/00
CPCB23B51/00B23B2251/208B23B2251/40
Inventor 张英芹
Owner 张英芹