Chisel edge micro-groove hard alloy drill bit for cutting aluminum alloy
A cemented carbide and aluminum alloy technology, applied in drilling, turning equipment, drilling tool accessories, etc., can solve the problems of increased production cost, large surface roughness and high drilling temperature, and can increase the contact area and improve the durability. degree of effect
Pending Publication Date: 2020-07-17
GUIZHOU INST OF TECH
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Problems solved by technology
At present, there is a common problem in the drilling process of twist drill bits, that is: the drilling temperature is high during the drilling process, the tool wear is large, and the tool head is easy to break, which leads to unstable product quality and the surface of the hole after drilling Larger roughness
The acceleration of tool wear not only increases the production cost, but also the quality of the product cannot be guaranteed
Method used
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Embodiment 1
[0023] Example 1. A chisel-blade micro-groove cemented carbide drill bit for cutting aluminum alloys, which is composed of Figure 1-4 As shown, including the chisel edge 1, both sides of the chisel edge 1 are the chisel edge rake face 2, the edge where the chisel edge rake face 2 intersects with the chisel edge 1 is the main cutting edge 3, and the chisel edge rake face 2 is on, close to The intersecting area between the chisel edge 1 and the main cutting edge 3 is provided with fan-like micro-grooves 4 with a bottom surface 5 that is an arc surface.
[0024] Specifically, the fan-like micro-grooves 4 on the rake faces 2 of the two chisel edges are distributed centrally symmetrically along the midpoint of the chisel edge 1 .
[0025] Specifically, the bottom surface 5 of the aforementioned fan-like microgroove 4 is a spiral arc surface, and the section curve of the fan-like microgroove 4 perpendicular to the depth direction is an asymmetrical arc.
[0026] Specifically, the...
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Abstract
The invention discloses a chisel edge micro-groove hard alloy drill bit for cutting aluminum alloy. The drill bit comprises a chisel edge (1), wherein the two sides of the chisel edge (1) are providedwith chisel edge rake faces (2), the edge, intersecting with the chisel edge (1), of each chisel edge rake face (2) serves as a main cutting edge (3), and a sector-like micro-groove (4) with an arc-shaped bottom surface (5) is arranged on the position, close to the intersection area between the chisel edge (1) and the main cutting edge (3), of each chisel edge rake face (2). The drill bit has thecharacteristics of reducing the cutting temperature and the cutting force and improving the durability of a cutter.
Description
technical field [0001] The invention relates to a drilling tool used in the field of cutting processing, in particular to a chisel-edge micro-groove cemented carbide drill bit for cutting aluminum alloy. Background technique [0002] Cutting is the main means of material removal in the machinery manufacturing industry, and the quality of cutting tools directly affects the efficiency and quality of cutting. In the existing cutting process, drilling is a common cutting process, in which the twist drill bit is the tool used for drilling. At present, there is a common problem in the drilling process of twist drill bits, that is: the drilling temperature is high during the drilling process, the tool wear is large, and the tool head is easily damaged, which leads to unstable product quality and the surface of the hole after drilling Larger roughness. The accelerated tool wear not only increases the production cost, but also cannot guarantee the quality of the product. Contents...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23B51/00
CPCB23B51/00B23B2222/28B23B2251/12
Inventor 邹中妃何林刘勇袁森蒋宏婉
Owner GUIZHOU INST OF TECH