Общий каталог Widia 2017 - страница 697

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Internal Laydown Threading

Required Information chuck jaws 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

(internal). (2,5mm pitch).

  • Operation (internal).
  • 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 the recommended shim, internal TN6025 SM-YE3. Options: 40–200 m/min

catalogue number insert size shim

AVR32D3R 3 SM-YE3