Каталог Iscar отрезка 2022 - страница 80

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Parting and Grooving

Selection of InsertsInsert Support
For a proper match of insert and cuttingA self-clamped tool is recommended for deep radial
material to application, the following variablesmachining. A screw-clamp holder is recommended
must be taken into consideration:for axial and small D.O.C. machining.
  • Width of cut (width of insert)

90˚ Mounting

  • Chipformer style
  • Lead angle It is very important that the insert is mounted at 90º
  • Corner radius to the center line of the workpiece in order to obtain
  • Carbide grade perpendicular surfaces and reduce the risk of vibration. Width of Cut (W.O.C.) and Depth of Cut (D.O.C.) Workpiece Machinability In selecting W.O.C., the main factor to consider is the The workpiece material affects all of the above factors. required D.O.C. The ratio D.O.C.≈ 8xW.O.C. is of practical use on alloy steel of average machinability. For example, Machine Power and Setup Rigidity applying a 3 mm W.O.C. insert TAG N3C to cut-off a

Excessive W.O.C. on a light-duty machine will yield 48 mm solid bar. vibration and may even stop spindle rotation. Additional factors which affect D.O.C.

capacity, relative to the ratio, are:Expensive Workpiece Material
Holder or Blade SizeOn costly metals the narrowest applicable

W.O.C. should be used. To minimize risk of vibration and deflection always choose:

  • Blade or toolholder with smallest possible overhang.
  • Toolholder with maximum shank dimension.
  • Blade height (B) dimension which is larger than Tmax.
  • Blade or holder with maximum blade width (largest possible insert seat size). Example:
  • A W.O.C. 9.5 mm on blade TGFH 53K-9
  • (B=52.6 mm) extends the ratio of D.O.C. to W.O.C. by some 50% to 120 mm.

0.1/1000 Tmax 90° ±10'