Общий каталог ZCC-CT 2019 - страница 1111

Technical information Technical information – drilling Solid carbide drills A Operation notes Correct drill clamping Max. drilling length Radial run-out Wrong drill clamping Turning Adjusting screw B Milling Use precision collets H = 1,5 x d1 Radial run-out <0.02 mm Don't clamp on the drill flutes. External coolant method Internal coolant method C Drilling The coolant liquid should shoot to the end Coolant pressure is about 0.5–1 mpa (coolant pressure is 2–3 mpa when D and the centre of the drill as shown in the figure. Handling of coolants: the diameter is less than 5 mm), coolant volume: 1.5–4 L/min 1. Small chip particles and dust can cause jamming in the oil hole. A fine mesh filter should be used. 2. Dirt and dust particles will adhere to the oil hole and lead to unsmooth coolant flow. Regularly change the coolant. Please ensure proper coolant Information supply. Technical Burrs and work piece Interrupted cutting Thin work pieces Stepped holes chippings on exit E Reduce the feed rate when drilling interrupted cut. – First drill the larger hole, then the – Reduce the feed rate approx. by smaller hole. half when the drill exits. – We can offer multiple step and – Use a drill with a different point Index chamfer drills on request. angle. Machine a countersink with If bending occurs, add a supporter. an end mill prior to drilling. C 170