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Research on Specialization of Modfied Tooth Tap’s Groove Parameters for Typical Difficult-to-Machine Materials

Author: ChengLong
Tutor: HanRongDi
School: Harbin Institute of Technology
Course: Mechanical Manufacturing and Automation
Keywords: Correction tooth tap The chip trough Chip curling simulation Taps geometric angles Tapping torque
CLC: TG722
Type: Master's thesis
Year: 2010
Downloads: 48
Quote: 1
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Abstract


Tapping problems with difficult to machine materials widely used in aviation, aerospace , nuclear energy and other fields , has become increasingly prominent , the taps basically rely on imports . Correction of teeth Taps forming principle , can greatly reduce the tapping torque , it can be used as an effective tool to solve the difficult-to-machine materials tapping . The wide variety of difficult to machine materials with different properties , applicable tap slotted parameters not and should not be the same . This article will five typical difficult to machine materials (titanium alloy TC4, austenitic stainless steel 1Cr18Ni9Ti , nickel-based superalloy of GH4169 F175 of high-strength steel and ultra high-strength steel D406A) Taps parameter specialization , with a wide range of applications . First in the Summary of difficult to machine materials tapping characteristics and the status quo at home and abroad on the basis of the the grooved to tap the existing four basic parameters analyzed , enhance of Taps chip removal capacity and reduce the rollback plug crumbs , taps two slotted five difficult to machine materials with special design , and slotted the processing of secondary tool - form cutter and sand contour -shaped design . Then , the application DEFORM 2D and Third Wave AdvantEdge finite element software equivalent finite element simulation model of the process of tapping . And against of TC4 , its chip curl conducted a simulation study , tap front of Chip trough of chip curl . Finally , with the the two trough correction teeth Taps developed five kinds of difficult to machine materials manual and motorized tapping test records tapping torque and tapping temperature . The comparative analysis of the results by the two slotted tap tapping , verify the correctness of the simulation ; and five typical difficult to machine materials preferred geometric angle of the tap , the tap dedicated . The results show that : the development of two grooved correct teeth Taps can be targeted to address five typical tapping challenges of difficult to machine materials .

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