Общий каталог Ingersoll 2011 - страница 585

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STANDARD GUN DRILL PAD FORMS PAD FORMS Drilling capacity and hole finish depend on the geometrical shape of the drill head. Both pad form and sharpening must be adjusted to the workpiece material. The pad form is determined when the tool is manufactured. Regrinding may change the cutting geometry, but the pad form will remain the same. All cross section profile parameters Universal G-Form Standard A-Form such as: P, La and a must be precisely adjusted to the workpiece material properties. Applications: Applications: For all material groups. For cast iron & aluminum alloys (coated). Works well in materials that tend to shrink. Drilling through cross holes and angled entry Maintains precision bore tolerance and straightness. and exits. Large gap between pads ensures good lubri- cation. Standard B-Form Standard C-Form Standard D-Form Applications: Applications: Applications: For cast iron & aluminum alloys. With larger back taper for use in materials that tend For cast iron only (with coating). Maintains high precision hole tolerances. to shrink. (Some alloys and stainless steels). Works very well in gray cast iron. Excellent surface finish. Drilling through cross holes and angled entry and exit. Not recommended for precise straightness control. Standard E-Form Standard H-Form Standard I-Form Applications: Applications: Applications: General purpose for all materials. For all non-ferrous materials. For aluminum and brass when best surface Commonly used in crankshaft and other forged For cast iron greater than 5 mm hole diameter. finish is required. materials. Can be used in wood & plastic with a larger Can be used in cross hole and interrupted cut Precise straightness control. back taper. applications. 587