New High-speed Adjustable Tungsten Carbide Boring Tool

New high-speed adjustable tungsten carbide boring tool came up with a University of Technology, who designed and manufactured a new type of high-speed machining to adapt adjustable boring tool. Under normal circumstances, a double-edged effect for rough machining boring tools are good. Currently on the market supply of double-edged sword boring most of its structure is similar: that is equipped with two knife caught in the cutter body, by means of a cylindrical screws to fasten the serrated gripping surfaces. When the centrifugal force generated by the rotation head is received by the screws and the serrated surface of sufficient size, even when the changes of improper tightening, relying pressurized cylindrical surface of the locking screw, the holder purging phenomenon does not occur. But in fine boring, the situation is quite different kind. Larger adjustment range pole fine boring tools, when the ordinary structure, when the speed reaches 10000r/min. Significantly decreased its processing results. Especially in modern machining centers, when speed is greater than 6000r/min be more boring, prone to howling and flutter, affecting the accuracy and surface quality of the hole.

By experiment, it has been found that the imbalance is at the root tip of the above problems. The reason is so unbalance occurs arbor strain, presetting tooling holes out there is a big error in diameter and accuracy. For the amount of overhang of the tool is longer, the surface roughness Rz value to 3 ~ 6μm. To address this problem, responsible for development and testing to design a re-tune the pore size, from the structure of compensation can automatically feed the balance of the new high-speed adjustable tungsten carbide boring tool.

 

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