Advantages and disadvantages of different boring tools
June 21, 2021
Boring cutter is a very common reaming tool, which can be used in many machines (such as lathe, milling machine, boring machine and modular machine tool, etc.). The machining accuracy of boring can reach it6-it8, and the surface roughness Ra can reach 6.3 μ m～0.8 μ m. It is commonly used in rough machining, semi finishing and finishing of large diameter holes. According to the structural characteristics and usage of boring cutter, it can be divided into single edge boring cutter and multi edge boring cutter.
Boring cutter head series
Single edge boring cutter
The structure of single edge boring tool head is similar to turning tool. It has only one main cutting edge. It has the advantages of simple structure, convenient manufacture and strong versatility, but its rigidity is much worse than turning tool. Therefore, the single edge boring cutter usually selects larger main and secondary deflection angles, smaller blade inclination angle and tool tip arc radius to reduce the radial force during cutting.
Single edge cutting
Single edge boring can be used in finishing process and rough and finish machining of materials with strict cutting control requirements. It can also be used as a solution when machine power is limited.
Multi edge cutting
Multi edge boring includes two or three cutting edges, which can be used in the roughing process when the material removal rate is the preferred factor. By using two or three edge tools, setting the blade to the same axial height and processing under the recommended feed per tooth, high production efficiency can be obtained, and feed per revolution to the hole?
Double edge boring cutter
The two cutting edges of double-edged boring cutter cut at two symmetrical positions at the same time, so the machining error caused by the action of radial cutting force on boring bar can be eliminated. When this kind of boring cutter cuts, the diameter of the hole is guaranteed by the cutter, and the outer diameter of the cutter is determined according to the diameter of the workpiece. The structure of this kind of boring cutter is more complex than that of single edge boring cutter, and it is more difficult to manufacture the blade and cutter bar, but the productivity is higher. Therefore, it is suitable for the occasions with high machining accuracy and large batch production.
Boring tool is a kind of tool used in machining, also known as cutting tool. Hole processing tools, including drill, reamer, boring tool, reamer and inner surface broach. Compared with other machining, boring is a more difficult machining. It only depends on adjusting a blade (or blade seat) to process micro holes like H7 and H6. With the popularity of machining center, now the boring process only needs programming, button operation and so on. Because of this, we need a simpler, more convenient and more precise knife to ensure the quality of products. Here mainly from the perspective of tool technology to analyze the boring machining of machining center.
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June 21, 2021
