Although imports in the durability of the knife auxiliary equipment, cutting speed, the processing quality is better than that of domestic knife auxiliary equipment, but the price of assistive devicesthan domestic knives by 5 ~ 20 times. Therefore, in the process design and the knife localization ofassistive devices work, to deal with the price performance ratio and the comprehensive economic benefit analysis and comparison, which don't need all choose import tool, also should not be blindlythe overall localization. We follow the following principles in knife auxiliary equipment selection:

Rough machining to the selection of home-made knife auxiliary equipment (such as the rough milling, rough boring tool etc.), because the domestic blank margin is large, tool consumptionamount is large, and the rough machining precision requirement is low, easy to fill the domesticcutter.

Drill bits, taps, countersink drill, reamer, reamer etc. should try to choose domestic tool. Despite the domestic cutter quality as the imported cutters, but this kind of tool adjustment, the replacement is convenient, the price also is more cost-effective.

Machining center tool system such as a knife handle and a knife rod (especially special non-standard tool system) should be adopted in domestic products, because import special non-standard cutter handle and a cutter rod price is very expensive, but the quality of domestic CNCtool system already can meet requests.