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"Drill Sleeve definition" Guides the bushing of the drill bit drilling. "Function"
1, guide the drill bit pair.
2, to ensure the accuracy of the product.
3, improve productivity, 4, reduce workers ' requirements.
"category" 1, fixed drill sleeve, 2, convertible drill sleeve.
"Material" most commonly used materials: GCR15, the requirements of wear-resistant, high hardness, hardness is generally hrc62-64 "Production process" car, (milling notch) quenching, grinding. The most difficult is the grinding inner hole, due to the small hole, the requirements of special equipment, the general small hole grinding speed of 40000 rpm
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