A niobium tubular target machining method comprises: using a first tool to boring and milling the inner hole of the niobium tube blank to obtain the niobium tubular target, the tool head of the first tool is a double tool head or a single tool head, the length of the tool bar of the first tool is greater than 5000mm, the double tool head is set in the working end of the tool bar along the axis direction, the tool head edge inclination is negative. In the process of processing the inner hole of the niobium tube blank, the invention adopts a special tool to keep a small cutting depth and a small cutting amount in the processing process, and the tool adopts a negative edge Angle, so that niobium chips gradually become pellets, which is conducive to the niobium chips being discharged from the surface of the inner hole during the processing of the inner hole, so that the inner hole of the niobium tube target is easily processed and formed. The invention also provides a cutting tool.
The machining method of the niobium tubular target includes: using the first tool to boring and milling the inner hole of the niobium tube blank to obtain the niobium tubular target, the tool head of the first tool is a double tool head or a single tool head, the length of the tool bar of the first tool is greater than 5000mm, the double tool head is set in the working end of the tool bar along the axis direction, and the blade inclination of the tool head is negative. Compared with the prior art, in the process of boring and milling the inner hole of the niobium tube billet, the invention selects a tool with a single or double cutter head and a lengthened cutter bar to maintain a small cutting depth and a small cutting amount during the processing of the niobium tube billet, and the cutter head adopts a negative edge Angle, so that the broken chips of the boring and milling process gradually become pellets, which is conducive to the removal of niobium chips from the inner hole of the niobium tube billet during the boring and milling process. Thus, the holes in the niobium tubular target can be easily processed and formed. In addition, in the process of boring and milling the niobium tube blank, the high pressure vulcanized oil with lubrication, cooling and thrust is applied at the same time, so that the chip breaking is more favorable to discharge from the inner hole of the niobium tube blank.
In the process of machining the inner hole of the niobium tube billet, the invention adopts the first tool to boring and milling the inner hole of the niobium tube billet, the tool head and the extended tool bar are combined to ensure the small cutting depth of the niobium tube billet in the boring and milling process, and the tool and the surface of the inner diameter of the niobium tube billet maintain a negative edge Angle, so that the niobium chips gradually form into pellets, avoiding the problem of large viscosity of the niobium tube billet material and not easy to break chips. Thus, the holes in the niobium tubular target can be easily processed and formed.
