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Research of the Twist Drill’s Structure Parameters and Sharpening Methods

Author: ShiLin
Tutor: FuCaiAn
School: Jiangnan University
Course: Mechanical Design and Theory
Keywords: Twist drill Flank Mathematical model Three-dimensional model
CLC: TG713
Type: Master's thesis
Year: 2006
Downloads: 302
Quote: 4
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Abstract


Hole processing technology is an important technology in the field of machining , machining today promising application of technology . Twist drill has been over a hundred years of history of the birth , but in the machining , at present it is still the most widely used hole processing tool . Drilling workload accounted for about one-third of the machining cost of astonishing . In recent years , the twist drills work more and more to get the attention of domestic and foreign experts , scholars and government research departments . Mainly the following aspects : to establish the mathematical model of a twist drill spiral rake face on the basis of analysis of twist drill rake face of nature to explore the grind straight line re- repair in Twist Drill worn or broken case blade method, on the basis of analysis of the twist drill front corner the main cutting edge of the twist drill optimization equation the proposed conventional twist drills stars flute shortcomings and improved method and establish the mathematical model of the sub - flute , on the basis of analysis of the advantages and disadvantages of the traditional twist drill flank grinding a flank grinding new method ----- spiral cone Edge Grinding and sharpening Method the posterior horn of the flank and the circumference of the mathematical model , this article also original cone sharpening method proposed another mathematical model , spiral face as long as three grinding parameters can be determined cone flank , variable lead edge grinding method has been proposed , but not yet established mathematical model , this paper established a mathematical model , three-dimensional design software Pro / E to establish the model of twist drill rake face and used the UG to establish a physical model , proposed two flank a three-dimensional model to measure the value of all angles in a grinding parameters and with a three-dimensional software to optimize the grinding parameters .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Cutting tools, abrasives,abrasive tools,fixtures,molds and hand tools > Tool > Hole Cutter
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