Общий каталог Widia 2017 - страница 696

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External Laydown Threading

Required Information

Chuck Jaws CCW rotation

From Part Drawing: 25mm 8UN Class 2A

material: 316SS, 200 HB thread form: 8UN tolerance: class 2A operation: external threading 50mm feed pitch diameter: 50mm x 25mm deep

From Machine Setup Data: tooling: 20mm x 20mm spindle rotation: anti-clockwise feed: toward chuck 70mm

Steps for a Successful Threading Operation

Step 1 Step 2 Determine Threading Method Select Insert

Need to Know: Need to Know:

  • Operation (external).
  • Thread form (ISO R262 1mm pitch).
  • Spindle rotation (CCW).
  • Hand of insert (right hand — ER).

Anti-clockwise rotation.

  • Feed direction (toward chuck).
  • Right-hand toolholder.
  • Right-hand insert (ER). Choose the High-Performance Solution
  • Standard helix method.

catalogue number insert size TN6025

3ER10ISO 3

High-Performance Selection NOTE: Use insert with largest insert size available. insert: 3ER10ISO grade: TN6025 speed: 150 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 (316SS-200HB).
  • External or internal operation
  • Thread form — TPI or pitch (8 TPI).

(external).

  • Operation (external).
  • Pitch diameter (50mm).
  • Pitch diameter to determine minimum
  • Helix method (standard).

bore diameter (N/A). See Laydown Threading (LT) shim

Options: Grade and Speed Type of tooling — toolholder, boring selection chart.

Selection Guidelines bar (toolholder).

  • Hand of tool (right hand).
  • Insert size (16). Select SM-YE3 shim

threading stainless operation steel NOTE: For this application, the standard general purpose shim supplied should be replaced and high performance with the recommended shim, SM-YE3. external TN6025 Options: 50–360 m/min

catalogue number insert size shim

AL203R 3 SM-YE3