Общий каталог Widia 2017 - страница 697

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Technical Information Internal Laydown Threading Required Information chuckjaws 70mm From Part Drawing: 35mm ISO R262 2,5mm pitch material: 4140 steel 50mm deep thread form: ISO R262 2,5mm pitch tolerance: ISO Metric Class 6G/6H operation: internal threading pitch diameter: 40mm x 35mm deep 40mm feed From Machine Setup Data: tooling: 20mm boring bar spindle rotation: clockwise feed: away from chuck CW rotation Steps for a Successful Threading Operation Step 1 • Step 2 • Determine Threading Method Select Insert Need to Know: Need to Know: • Operation (internal). • Thread form (ISO Metric Class 6G/6H). • Spindle rotation (CW). • Hand of insert (left hand — NL). Clockwise rotation. • Feed direction (away from chuck). • Left-hand toolholder. • Left-hand insert (NL). Choose the High-Performance Solution • Reverse helix method. catalogue number insert size TN6025 3IL25ISO 3 • High-Performance Selection NOTE: Use insert with largest possible insert size to go into the bore. insert: 3IL25ISO grade: TN6025 speed: 130 m/min Step 3 • Step 4 • Step 5 • Select the Grade and Speed Select Toolholder Select Shim Need to Know: Need to Know: Need to Know: • Workpiece material (4010 steel). • External or internal operation • Thread form — TPI or pitch • Operation (internal). (internal). (2,5mm pitch). • Pitch diameter to determine minimum • Pitch diameter (40mm). bore diameter for internal operations • Helix method (reverse). (40mm).Options: Grade and Speed See Laydown Threading (LT) Selection Guidelines • Type of tooling — toolholder, boring shim selection chart. bar (boring bar). • Hand of tool (left hand). Select SM-YE3 threading • Insert size (16). operation steel NOTE: For this application, the general purpose standard shim supplied and high performance should be replaced with internal TN6025 Options: the recommended shim,SM-YE3. 40–200 m/min catalogue number insert size shim AVR32D3R 3 SM-YE3 widia.com F99