Automatic Screw Machines a Treatise On the Construction Design And Operation
Automatic Screw Machines a Treatise On the Construction Design And Operation
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In our eReader you can find the full English version of the book. Read Automatic Screw Machines a Treatise On the Construction Design And Operation 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 Automatic Screw Machines a Treatise On the Construction Design And Operation
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40 has proved satisfactory for materials of the kind mentioned. The end of this tap is ground at an angle of about 55 degrees and is slightly cupped out at the center and backed off as indicated in the end view. The tap should be slightly tapered towards the back for clearance. A groove is ground the entire length of the threaded part after the tap has been hardened. This groove allows the oil to reach the point of the tap and also provides clearance for the chips. When made from Stubb's import...ed drill rod and carefully hardened, this tap can be worked at a cutting speed of from 35 to 40 feet per minute.
Some taps intended especially for threading copper have an odd number of flutes which are cut spirally. The Echols patent tap, made by the Pratt & Whitney Co. , has proved effective for cutting clean threads in copper and tough ma- terials, such as gun-metal, etc. This style of tap has an odd number of flutes and each alternate tooth is omitted, the arrangement being such that each tooth is followed by a blank space on the following land, which, in turn, is followed by a tooth on the next successive land.
What to read after Automatic Screw Machines a Treatise On the Construction Design And Operation?
You can find similar books in the "Read Also" column, or choose other free books by Douglas T Douglas Thomas Hamilton to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
40 has proved satisfactory for materials of the kind mentioned. The end of this tap is ground at an angle of about 55 degrees and is slightly cupped out at the center and backed off as indicated in the end view. The tap should be slightly tapered towards the back for clearance. A groove is ground the entire length of the threaded part after the tap has been hardened. This groove allows the oil to reach the point of the tap and also provides clearance for the chips. When made from Stubb's import...ed drill rod and carefully hardened, this tap can be worked at a cutting speed of from 35 to 40 feet per minute.
Some taps intended especially for threading copper have an odd number of flutes which are cut spirally. The Echols patent tap, made by the Pratt & Whitney Co. , has proved effective for cutting clean threads in copper and tough ma- terials, such as gun-metal, etc. This style of tap has an odd number of flutes and each alternate tooth is omitted, the arrangement being such that each tooth is followed by a blank space on the following land, which, in turn, is followed by a tooth on the next successive land.
What to read after Automatic Screw Machines a Treatise On the Construction Design And Operation?
You can find similar books in the "Read Also" column, or choose other free books by Douglas T Douglas Thomas Hamilton to read onlineMoreLess
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