Deep Hole Drilling
Deep Hole Drilling
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In our eReader you can find the full English version of the book. Read Deep Hole Drilling Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Deep Hole Drilling
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V r Fig. 11. End Mill with Center Cut, suitable for Accurate Drilling The inner edge or corner of the cutting edge should be slightly rounded to help support the cutter and prevent chattering, and the width A of the cutting edge should be from 1/32 to 1/16 inch less than the radius of the hole to be drilled. The objection to this tool is tnat it cannot be supported stiffly enough by the tool-post for a hole of great depth, and for this purpose the D-drill shown in Fig. 13, and which works on th...e same principle, is well adapted. In its sim- plest form it consists of a round bar of the diameter of the hole to be drilled, one-quarter to one-half of which is milled out to give a pas- sage for the chips. The end of the bar is shaped with a cutting edge on one side, extending almost or quite to the center, and with the other side relieved to give clearance for the cutter. Such a drill should be supported by a bearing close to the hole to be bored, in case it is to start the hole itself, and it is better yet to start the hole with a twist drill and true it up with a single-pointed boring tool, and then let the drill be guided by this hole.
What to read after Deep Hole Drilling?
You can find similar books in the "Read Also" column, or choose other free books by Dsir Mercier to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
V r Fig. 11. End Mill with Center Cut, suitable for Accurate Drilling The inner edge or corner of the cutting edge should be slightly rounded to help support the cutter and prevent chattering, and the width A of the cutting edge should be from 1/32 to 1/16 inch less than the radius of the hole to be drilled. The objection to this tool is tnat it cannot be supported stiffly enough by the tool-post for a hole of great depth, and for this purpose the D-drill shown in Fig. 13, and which works on th...e same principle, is well adapted. In its sim- plest form it consists of a round bar of the diameter of the hole to be drilled, one-quarter to one-half of which is milled out to give a pas- sage for the chips. The end of the bar is shaped with a cutting edge on one side, extending almost or quite to the center, and with the other side relieved to give clearance for the cutter. Such a drill should be supported by a bearing close to the hole to be bored, in case it is to start the hole itself, and it is better yet to start the hole with a twist drill and true it up with a single-pointed boring tool, and then let the drill be guided by this hole.
What to read after Deep Hole Drilling?
You can find similar books in the "Read Also" column, or choose other free books by Dsir Mercier to read onlineMoreLess
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